gpu/command_buffer/client/gles2_implementation.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 // A class to emulate GLES2 over command buffers.
   6
   7 #include "gpu/command_buffer/client/gles2_implementation.h"
   8
   9 #include <algorithm>
  10 #include <map>
  11 #include <queue>
  12 #include <set>
  13 #include <limits>
  14 #include <stdio.h>
  15 #include <string.h>
  16 #include <GLES2/gl2ext.h>
  17 #include <GLES2/gl2extchromium.h>
  18 #include "gpu/command_buffer/client/buffer_tracker.h"
  19 #include "gpu/command_buffer/client/gpu_memory_buffer_tracker.h"
  20 #include "gpu/command_buffer/client/program_info_manager.h"
  21 #include "gpu/command_buffer/client/query_tracker.h"
  22 #include "gpu/command_buffer/client/transfer_buffer.h"
  23 #include "gpu/command_buffer/client/vertex_array_object_manager.h"
  24 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
  25 #include "gpu/command_buffer/common/gpu_control.h"
  26 #include "gpu/command_buffer/common/trace_event.h"
  27 #include "ui/gfx/gpu_memory_buffer.h"
  28
  29 #if defined(__native_client__) && !defined(GLES2_SUPPORT_CLIENT_SIDE_ARRAYS)
  30 #define GLES2_SUPPORT_CLIENT_SIDE_ARRAYS
  31 #endif
  32
  33 #if defined(GPU_CLIENT_DEBUG)
  34 #include "ui/gl/gl_switches.h"
  35 #include "base/command_line.h"
  36 #endif
  37
  38 namespace gpu {
  39 namespace gles2 {
  40
  41 // A 32-bit and 64-bit compatible way of converting a pointer to a GLuint.
  42 static GLuint ToGLuint(const void* ptr) {
  43   return static_cast<GLuint>(reinterpret_cast<size_t>(ptr));
  44 }
  45
  46 #if !defined(_MSC_VER)
  47 const size_t GLES2Implementation::kMaxSizeOfSimpleResult;
  48 const unsigned int GLES2Implementation::kStartingOffset;
  49 #endif
  50
  51 GLES2Implementation::GLStaticState::GLStaticState() {
  52 }
  53
  54 GLES2Implementation::GLStaticState::~GLStaticState() {
  55 }
  56
  57 GLES2Implementation::GLStaticState::IntState::IntState()
  58     : max_combined_texture_image_units(0),
  59       max_cube_map_texture_size(0),
  60       max_fragment_uniform_vectors(0),
  61       max_renderbuffer_size(0),
  62       max_texture_image_units(0),
  63       max_texture_size(0),
  64       max_varying_vectors(0),
  65       max_vertex_attribs(0),
  66       max_vertex_texture_image_units(0),
  67       max_vertex_uniform_vectors(0),
  68       num_compressed_texture_formats(0),
  69       num_shader_binary_formats(0) {
  70 }
  71
  72 GLES2Implementation::SingleThreadChecker::SingleThreadChecker(
  73     GLES2Implementation* gles2_implementation)
  74     : gles2_implementation_(gles2_implementation) {
  75   CHECK_EQ(0, gles2_implementation_->use_count_);
  76   ++gles2_implementation_->use_count_;
  77 }
  78
  79 GLES2Implementation::SingleThreadChecker::~SingleThreadChecker() {
  80   --gles2_implementation_->use_count_;
  81   CHECK_EQ(0, gles2_implementation_->use_count_);
  82 }
  83
  84 GLES2Implementation::GLES2Implementation(
  85       GLES2CmdHelper* helper,
  86       ShareGroup* share_group,
  87       TransferBufferInterface* transfer_buffer,
  88       bool bind_generates_resource,
  89       bool free_everything_when_invisible,
  90       GpuControl* gpu_control)
  91     : helper_(helper),
  92       transfer_buffer_(transfer_buffer),
  93       angle_pack_reverse_row_order_status_(kUnknownExtensionStatus),
  94       chromium_framebuffer_multisample_(kUnknownExtensionStatus),
  95       pack_alignment_(4),
  96       unpack_alignment_(4),
  97       unpack_flip_y_(false),
  98       unpack_row_length_(0),
  99       unpack_skip_rows_(0),
 100       unpack_skip_pixels_(0),
 101       pack_reverse_row_order_(false),
 102       active_texture_unit_(0),
 103       bound_framebuffer_(0),
 104       bound_read_framebuffer_(0),
 105       bound_renderbuffer_(0),
 106       current_program_(0),
 107       bound_array_buffer_id_(0),
 108       bound_pixel_pack_transfer_buffer_id_(0),
 109       bound_pixel_unpack_transfer_buffer_id_(0),
 110       error_bits_(0),
 111       debug_(false),
 112       use_count_(0),
 113       error_message_callback_(NULL),
 114       gpu_control_(gpu_control),
 115       surface_visible_(true),
 116       free_everything_when_invisible_(free_everything_when_invisible),
 117       capabilities_(gpu_control->GetCapabilities()),
 118       weak_ptr_factory_(this) {
 119   DCHECK(helper);
 120   DCHECK(transfer_buffer);
 121   DCHECK(gpu_control);
 122
 123   char temp[128];
 124   sprintf(temp, "%p", static_cast<void*>(this));
 125   this_in_hex_ = std::string(temp);
 126
 127   GPU_CLIENT_LOG_CODE_BLOCK({
 128     debug_ = CommandLine::ForCurrentProcess()->HasSwitch(
 129         switches::kEnableGPUClientLogging);
 130   });
 131
 132   share_group_ =
 133       (share_group ? share_group : new ShareGroup(bind_generates_resource));
 134
 135   memset(&reserved_ids_, 0, sizeof(reserved_ids_));
 136 }
 137
 138 bool GLES2Implementation::Initialize(
 139     unsigned int starting_transfer_buffer_size,
 140     unsigned int min_transfer_buffer_size,
 141     unsigned int max_transfer_buffer_size,
 142     unsigned int mapped_memory_limit) {
 143   DCHECK_GE(starting_transfer_buffer_size, min_transfer_buffer_size);
 144   DCHECK_LE(starting_transfer_buffer_size, max_transfer_buffer_size);
 145   DCHECK_GE(min_transfer_buffer_size, kStartingOffset);
 146
 147   if (!transfer_buffer_->Initialize(
 148       starting_transfer_buffer_size,
 149       kStartingOffset,
 150       min_transfer_buffer_size,
 151       max_transfer_buffer_size,
 152       kAlignment,
 153       kSizeToFlush)) {
 154     return false;
 155   }
 156
 157   mapped_memory_.reset(new MappedMemoryManager(helper_, mapped_memory_limit));
 158
 159   unsigned chunk_size = 2 * 1024 * 1024;
 160   if (mapped_memory_limit != kNoLimit) {
 161     // Use smaller chunks if the client is very memory conscientious.
 162     chunk_size = std::min(mapped_memory_limit / 4, chunk_size);
 163   }
 164   mapped_memory_->set_chunk_size_multiple(chunk_size);
 165
 166   if (!QueryAndCacheStaticState())
 167     return false;
 168
 169   util_.set_num_compressed_texture_formats(
 170       static_state_.int_state.num_compressed_texture_formats);
 171   util_.set_num_shader_binary_formats(
 172       static_state_.int_state.num_shader_binary_formats);
 173
 174   texture_units_.reset(
 175       new TextureUnit[
 176           static_state_.int_state.max_combined_texture_image_units]);
 177
 178   query_tracker_.reset(new QueryTracker(mapped_memory_.get()));
 179   buffer_tracker_.reset(new BufferTracker(mapped_memory_.get()));
 180   gpu_memory_buffer_tracker_.reset(new GpuMemoryBufferTracker(gpu_control_));
 181
 182 #if defined(GLES2_SUPPORT_CLIENT_SIDE_ARRAYS)
 183   GetIdHandler(id_namespaces::kBuffers)->MakeIds(
 184       this, kClientSideArrayId, arraysize(reserved_ids_), &reserved_ids_[0]);
 185 #endif
 186
 187   vertex_array_object_manager_.reset(new VertexArrayObjectManager(
 188       static_state_.int_state.max_vertex_attribs,
 189       reserved_ids_[0],
 190       reserved_ids_[1]));
 191
 192   return true;
 193 }
 194
 195 bool GLES2Implementation::QueryAndCacheStaticState() {
 196   // Setup query for multiple GetIntegerv's
 197   static const GLenum pnames[] = {
 198     GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS,
 199     GL_MAX_CUBE_MAP_TEXTURE_SIZE,
 200     GL_MAX_FRAGMENT_UNIFORM_VECTORS,
 201     GL_MAX_RENDERBUFFER_SIZE,
 202     GL_MAX_TEXTURE_IMAGE_UNITS,
 203     GL_MAX_TEXTURE_SIZE,
 204     GL_MAX_VARYING_VECTORS,
 205     GL_MAX_VERTEX_ATTRIBS,
 206     GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS,
 207     GL_MAX_VERTEX_UNIFORM_VECTORS,
 208     GL_NUM_COMPRESSED_TEXTURE_FORMATS,
 209     GL_NUM_SHADER_BINARY_FORMATS,
 210   };
 211
 212   GetMultipleIntegervState integerv_state(
 213       pnames, arraysize(pnames),
 214       &static_state_.int_state.max_combined_texture_image_units,
 215       sizeof(static_state_.int_state));
 216   if (!GetMultipleIntegervSetup(&integerv_state)) {
 217     return false;
 218   }
 219
 220   // Setup query for multiple GetShaderPrecisionFormat's
 221   static const GLenum precision_params[][2] = {
 222     { GL_VERTEX_SHADER, GL_LOW_INT },
 223     { GL_VERTEX_SHADER, GL_MEDIUM_INT },
 224     { GL_VERTEX_SHADER, GL_HIGH_INT },
 225     { GL_VERTEX_SHADER, GL_LOW_FLOAT },
 226     { GL_VERTEX_SHADER, GL_MEDIUM_FLOAT },
 227     { GL_VERTEX_SHADER, GL_HIGH_FLOAT },
 228     { GL_FRAGMENT_SHADER, GL_LOW_INT },
 229     { GL_FRAGMENT_SHADER, GL_MEDIUM_INT },
 230     { GL_FRAGMENT_SHADER, GL_HIGH_INT },
 231     { GL_FRAGMENT_SHADER, GL_LOW_FLOAT },
 232     { GL_FRAGMENT_SHADER, GL_MEDIUM_FLOAT },
 233     { GL_FRAGMENT_SHADER, GL_HIGH_FLOAT },
 234   };
 235
 236   GetAllShaderPrecisionFormatsState  precision_state(
 237       precision_params, arraysize(precision_params));
 238   GetAllShaderPrecisionFormatsSetup(&precision_state);
 239
 240   // Allocate and partition transfer buffer for all requests
 241   void* buffer = transfer_buffer_->Alloc(
 242       integerv_state.transfer_buffer_size_needed +
 243       precision_state.transfer_buffer_size_needed);
 244   if (!buffer) {
 245     SetGLError(GL_OUT_OF_MEMORY, "QueryAndCacheStaticState",
 246                "Transfer buffer allocation failed.");
 247     return false;
 248   }
 249   integerv_state.buffer = buffer;
 250   precision_state.results_buffer =
 251       static_cast<char*>(buffer) + integerv_state.transfer_buffer_size_needed;
 252
 253   // Make all the requests and wait once for all the results.
 254   GetMultipleIntegervRequest(&integerv_state);
 255   GetAllShaderPrecisionFormatsRequest(&precision_state);
 256   WaitForCmd();
 257   GetMultipleIntegervOnCompleted(&integerv_state);
 258   GetAllShaderPrecisionFormatsOnCompleted(&precision_state);
 259
 260   // TODO(gman): We should be able to free without a token.
 261   transfer_buffer_->FreePendingToken(buffer, helper_->InsertToken());
 262   CheckGLError();
 263
 264   return true;
 265 }
 266
 267 GLES2Implementation::~GLES2Implementation() {
 268   // Make sure the queries are finished otherwise we'll delete the
 269   // shared memory (mapped_memory_) which will free the memory used
 270   // by the queries. The GPU process when validating that memory is still
 271   // shared will fail and abort (ie, it will stop running).
 272   WaitForCmd();
 273   query_tracker_.reset();
 274
 275 #if defined(GLES2_SUPPORT_CLIENT_SIDE_ARRAYS)
 276   DeleteBuffers(arraysize(reserved_ids_), &reserved_ids_[0]);
 277 #endif
 278   buffer_tracker_.reset();
 279
 280   // Make sure the commands make it the service.
 281   WaitForCmd();
 282 }
 283
 284 GLES2CmdHelper* GLES2Implementation::helper() const {
 285   return helper_;
 286 }
 287
 288 IdHandlerInterface* GLES2Implementation::GetIdHandler(int namespace_id) const {
 289   return share_group_->GetIdHandler(namespace_id);
 290 }
 291
 292 void* GLES2Implementation::GetResultBuffer() {
 293   return transfer_buffer_->GetResultBuffer();
 294 }
 295
 296 int32 GLES2Implementation::GetResultShmId() {
 297   return transfer_buffer_->GetShmId();
 298 }
 299
 300 uint32 GLES2Implementation::GetResultShmOffset() {
 301   return transfer_buffer_->GetResultOffset();
 302 }
 303
 304 void GLES2Implementation::FreeUnusedSharedMemory() {
 305   mapped_memory_->FreeUnused();
 306 }
 307
 308 void GLES2Implementation::FreeEverything() {
 309   WaitForCmd();
 310   query_tracker_->Shrink();
 311   FreeUnusedSharedMemory();
 312   transfer_buffer_->Free();
 313   helper_->FreeRingBuffer();
 314 }
 315
 316 void GLES2Implementation::RunIfContextNotLost(const base::Closure& callback) {
 317   if (!helper_->IsContextLost())
 318     callback.Run();
 319 }
 320
 321 void GLES2Implementation::SignalSyncPoint(uint32 sync_point,
 322                                           const base::Closure& callback) {
 323   gpu_control_->SignalSyncPoint(
 324       sync_point,
 325       base::Bind(&GLES2Implementation::RunIfContextNotLost,
 326                  weak_ptr_factory_.GetWeakPtr(),
 327                  callback));
 328 }
 329
 330 void GLES2Implementation::SignalQuery(uint32 query,
 331                                       const base::Closure& callback) {
 332   // Flush previously entered commands to ensure ordering with any
 333   // glBeginQueryEXT() calls that may have been put into the context.
 334   ShallowFlushCHROMIUM();
 335   gpu_control_->SignalQuery(
 336       query,
 337       base::Bind(&GLES2Implementation::RunIfContextNotLost,
 338                  weak_ptr_factory_.GetWeakPtr(),
 339                  callback));
 340 }
 341
 342 void GLES2Implementation::SetSurfaceVisible(bool visible) {
 343   // TODO(piman): This probably should be ShallowFlushCHROMIUM().
 344   Flush();
 345   surface_visible_ = visible;
 346   gpu_control_->SetSurfaceVisible(visible);
 347   if (!visible)
 348     FreeEverything();
 349 }
 350
 351 void GLES2Implementation::SendManagedMemoryStats(
 352     const ManagedMemoryStats& stats) {
 353   gpu_control_->SendManagedMemoryStats(stats);
 354 }
 355
 356 void GLES2Implementation::WaitForCmd() {
 357   TRACE_EVENT0("gpu", "GLES2::WaitForCmd");
 358   helper_->CommandBufferHelper::Finish();
 359 }
 360
 361 bool GLES2Implementation::IsExtensionAvailable(const char* ext) {
 362   const char* extensions =
 363       reinterpret_cast<const char*>(GetStringHelper(GL_EXTENSIONS));
 364   if (!extensions)
 365     return false;
 366
 367   int length = strlen(ext);
 368   while (true) {
 369     int n = strcspn(extensions, " ");
 370     if (n == length && 0 == strncmp(ext, extensions, length)) {
 371       return true;
 372     }
 373     if ('\0' == extensions[n]) {
 374       return false;
 375     }
 376     extensions += n + 1;
 377   }
 378 }
 379
 380 bool GLES2Implementation::IsExtensionAvailableHelper(
 381     const char* extension, ExtensionStatus* status) {
 382   switch (*status) {
 383     case kAvailableExtensionStatus:
 384       return true;
 385     case kUnavailableExtensionStatus:
 386       return false;
 387     default: {
 388       bool available = IsExtensionAvailable(extension);
 389       *status = available ? kAvailableExtensionStatus :
 390                             kUnavailableExtensionStatus;
 391       return available;
 392     }
 393   }
 394 }
 395
 396 bool GLES2Implementation::IsAnglePackReverseRowOrderAvailable() {
 397   return IsExtensionAvailableHelper(
 398       "GL_ANGLE_pack_reverse_row_order",
 399       &angle_pack_reverse_row_order_status_);
 400 }
 401
 402 bool GLES2Implementation::IsChromiumFramebufferMultisampleAvailable() {
 403   return IsExtensionAvailableHelper(
 404       "GL_CHROMIUM_framebuffer_multisample",
 405       &chromium_framebuffer_multisample_);
 406 }
 407
 408 const std::string& GLES2Implementation::GetLogPrefix() const {
 409   const std::string& prefix(debug_marker_manager_.GetMarker());
 410   return prefix.empty() ? this_in_hex_ : prefix;
 411 }
 412
 413 GLenum GLES2Implementation::GetError() {
 414   GPU_CLIENT_SINGLE_THREAD_CHECK();
 415   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glGetError()");
 416   GLenum err = GetGLError();
 417   GPU_CLIENT_LOG("returned " << GLES2Util::GetStringError(err));
 418   return err;
 419 }
 420
 421 GLenum GLES2Implementation::GetClientSideGLError() {
 422   if (error_bits_ == 0) {
 423     return GL_NO_ERROR;
 424   }
 425
 426   GLenum error = GL_NO_ERROR;
 427   for (uint32 mask = 1; mask != 0; mask = mask << 1) {
 428     if ((error_bits_ & mask) != 0) {
 429       error = GLES2Util::GLErrorBitToGLError(mask);
 430       break;
 431     }
 432   }
 433   error_bits_ &= ~GLES2Util::GLErrorToErrorBit(error);
 434   return error;
 435 }
 436
 437 GLenum GLES2Implementation::GetGLError() {
 438   TRACE_EVENT0("gpu", "GLES2::GetGLError");
 439   // Check the GL error first, then our wrapped error.
 440   typedef cmds::GetError::Result Result;
 441   Result* result = GetResultAs<Result*>();
 442   // If we couldn't allocate a result the context is lost.
 443   if (!result) {
 444     return GL_NO_ERROR;
 445   }
 446   *result = GL_NO_ERROR;
 447   helper_->GetError(GetResultShmId(), GetResultShmOffset());
 448   WaitForCmd();
 449   GLenum error = *result;
 450   if (error == GL_NO_ERROR) {
 451     error = GetClientSideGLError();
 452   } else {
 453     // There was an error, clear the corresponding wrapped error.
 454     error_bits_ &= ~GLES2Util::GLErrorToErrorBit(error);
 455   }
 456   return error;
 457 }
 458
 459 #if defined(GL_CLIENT_FAIL_GL_ERRORS)
 460 void GLES2Implementation::FailGLError(GLenum error) {
 461   if (error != GL_NO_ERROR) {
 462     NOTREACHED() << "Error";
 463   }
 464 }
 465 // NOTE: Calling GetGLError overwrites data in the result buffer.
 466 void GLES2Implementation::CheckGLError() {
 467   FailGLError(GetGLError());
 468 }
 469 #endif  // defined(GPU_CLIENT_FAIL_GL_ERRORS)
 470
 471 void GLES2Implementation::SetGLError(
 472     GLenum error, const char* function_name, const char* msg) {
 473   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] Client Synthesized Error: "
 474                  << GLES2Util::GetStringError(error) << ": "
 475                  << function_name << ": " << msg);
 476   FailGLError(error);
 477   if (msg) {
 478     last_error_ = msg;
 479   }
 480   if (error_message_callback_) {
 481     std::string temp(GLES2Util::GetStringError(error)  + " : " +
 482                      function_name + ": " + (msg ? msg : ""));
 483     error_message_callback_->OnErrorMessage(temp.c_str(), 0);
 484   }
 485   error_bits_ |= GLES2Util::GLErrorToErrorBit(error);
 486 }
 487
 488 void GLES2Implementation::SetGLErrorInvalidEnum(
 489     const char* function_name, GLenum value, const char* label) {
 490   SetGLError(GL_INVALID_ENUM, function_name,
 491              (std::string(label) + " was " +
 492               GLES2Util::GetStringEnum(value)).c_str());
 493 }
 494
 495 bool GLES2Implementation::GetBucketContents(uint32 bucket_id,
 496                                             std::vector<int8>* data) {
 497   TRACE_EVENT0("gpu", "GLES2::GetBucketContents");
 498   DCHECK(data);
 499   const uint32 kStartSize = 32 * 1024;
 500   ScopedTransferBufferPtr buffer(kStartSize, helper_, transfer_buffer_);
 501   if (!buffer.valid()) {
 502     return false;
 503   }
 504   typedef cmd::GetBucketStart::Result Result;
 505   Result* result = GetResultAs<Result*>();
 506   if (!result) {
 507     return false;
 508   }
 509   *result = 0;
 510   helper_->GetBucketStart(
 511       bucket_id, GetResultShmId(), GetResultShmOffset(),
 512       buffer.size(), buffer.shm_id(), buffer.offset());
 513   WaitForCmd();
 514   uint32 size = *result;
 515   data->resize(size);
 516   if (size > 0u) {
 517     uint32 offset = 0;
 518     while (size) {
 519       if (!buffer.valid()) {
 520         buffer.Reset(size);
 521         if (!buffer.valid()) {
 522           return false;
 523         }
 524         helper_->GetBucketData(
 525             bucket_id, offset, buffer.size(), buffer.shm_id(), buffer.offset());
 526         WaitForCmd();
 527       }
 528       uint32 size_to_copy = std::min(size, buffer.size());
 529       memcpy(&(*data)[offset], buffer.address(), size_to_copy);
 530       offset += size_to_copy;
 531       size -= size_to_copy;
 532       buffer.Release();
 533     };
 534     // Free the bucket. This is not required but it does free up the memory.
 535     // and we don't have to wait for the result so from the client's perspective
 536     // it's cheap.
 537     helper_->SetBucketSize(bucket_id, 0);
 538   }
 539   return true;
 540 }
 541
 542 void GLES2Implementation::SetBucketContents(
 543     uint32 bucket_id, const void* data, size_t size) {
 544   DCHECK(data);
 545   helper_->SetBucketSize(bucket_id, size);
 546   if (size > 0u) {
 547     uint32 offset = 0;
 548     while (size) {
 549       ScopedTransferBufferPtr buffer(size, helper_, transfer_buffer_);
 550       if (!buffer.valid()) {
 551         return;
 552       }
 553       memcpy(buffer.address(), static_cast<const int8*>(data) + offset,
 554              buffer.size());
 555       helper_->SetBucketData(
 556           bucket_id, offset, buffer.size(), buffer.shm_id(), buffer.offset());
 557       offset += buffer.size();
 558       size -= buffer.size();
 559     }
 560   }
 561 }
 562
 563 void GLES2Implementation::SetBucketAsCString(
 564     uint32 bucket_id, const char* str) {
 565   // NOTE: strings are passed NULL terminated. That means the empty
 566   // string will have a size of 1 and no-string will have a size of 0
 567   if (str) {
 568     SetBucketContents(bucket_id, str, strlen(str) + 1);
 569   } else {
 570     helper_->SetBucketSize(bucket_id, 0);
 571   }
 572 }
 573
 574 bool GLES2Implementation::GetBucketAsString(
 575     uint32 bucket_id, std::string* str) {
 576   DCHECK(str);
 577   std::vector<int8> data;
 578   // NOTE: strings are passed NULL terminated. That means the empty
 579   // string will have a size of 1 and no-string will have a size of 0
 580   if (!GetBucketContents(bucket_id, &data)) {
 581     return false;
 582   }
 583   if (data.empty()) {
 584     return false;
 585   }
 586   str->assign(&data[0], &data[0] + data.size() - 1);
 587   return true;
 588 }
 589
 590 void GLES2Implementation::SetBucketAsString(
 591     uint32 bucket_id, const std::string& str) {
 592   // NOTE: strings are passed NULL terminated. That means the empty
 593   // string will have a size of 1 and no-string will have a size of 0
 594   SetBucketContents(bucket_id, str.c_str(), str.size() + 1);
 595 }
 596
 597 void GLES2Implementation::Disable(GLenum cap) {
 598   GPU_CLIENT_SINGLE_THREAD_CHECK();
 599   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glDisable("
 600                  << GLES2Util::GetStringCapability(cap) << ")");
 601   bool changed = false;
 602   if (!state_.SetCapabilityState(cap, false, &changed) || changed) {
 603     helper_->Disable(cap);
 604   }
 605   CheckGLError();
 606 }
 607
 608 void GLES2Implementation::Enable(GLenum cap) {
 609   GPU_CLIENT_SINGLE_THREAD_CHECK();
 610   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glEnable("
 611                  << GLES2Util::GetStringCapability(cap) << ")");
 612   bool changed = false;
 613   if (!state_.SetCapabilityState(cap, true, &changed) || changed) {
 614     helper_->Enable(cap);
 615   }
 616   CheckGLError();
 617 }
 618
 619 GLboolean GLES2Implementation::IsEnabled(GLenum cap) {
 620   GPU_CLIENT_SINGLE_THREAD_CHECK();
 621   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glIsEnabled("
 622                  << GLES2Util::GetStringCapability(cap) << ")");
 623   bool state = false;
 624   if (!state_.GetEnabled(cap, &state)) {
 625     typedef cmds::IsEnabled::Result Result;
 626     Result* result = GetResultAs<Result*>();
 627     if (!result) {
 628       return GL_FALSE;
 629     }
 630     *result = 0;
 631     helper_->IsEnabled(cap, GetResultShmId(), GetResultShmOffset());
 632     WaitForCmd();
 633     state = (*result) != 0;
 634   }
 635
 636   GPU_CLIENT_LOG("returned " << state);
 637   CheckGLError();
 638   return state;
 639 }
 640
 641 bool GLES2Implementation::GetHelper(GLenum pname, GLint* params) {
 642   switch (pname) {
 643     case GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS:
 644       *params = static_state_.int_state.max_combined_texture_image_units;
 645       return true;
 646     case GL_MAX_CUBE_MAP_TEXTURE_SIZE:
 647       *params = static_state_.int_state.max_cube_map_texture_size;
 648       return true;
 649     case GL_MAX_FRAGMENT_UNIFORM_VECTORS:
 650       *params = static_state_.int_state.max_fragment_uniform_vectors;
 651       return true;
 652     case GL_MAX_RENDERBUFFER_SIZE:
 653       *params = static_state_.int_state.max_renderbuffer_size;
 654       return true;
 655     case GL_MAX_TEXTURE_IMAGE_UNITS:
 656       *params = static_state_.int_state.max_texture_image_units;
 657       return true;
 658     case GL_MAX_TEXTURE_SIZE:
 659       *params = static_state_.int_state.max_texture_size;
 660       return true;
 661     case GL_MAX_VARYING_VECTORS:
 662       *params = static_state_.int_state.max_varying_vectors;
 663       return true;
 664     case GL_MAX_VERTEX_ATTRIBS:
 665       *params = static_state_.int_state.max_vertex_attribs;
 666       return true;
 667     case GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS:
 668       *params = static_state_.int_state.max_vertex_texture_image_units;
 669       return true;
 670     case GL_MAX_VERTEX_UNIFORM_VECTORS:
 671       *params = static_state_.int_state.max_vertex_uniform_vectors;
 672       return true;
 673     case GL_NUM_COMPRESSED_TEXTURE_FORMATS:
 674       *params = static_state_.int_state.num_compressed_texture_formats;
 675       return true;
 676     case GL_NUM_SHADER_BINARY_FORMATS:
 677       *params = static_state_.int_state.num_shader_binary_formats;
 678       return true;
 679     case GL_ARRAY_BUFFER_BINDING:
 680       if (share_group_->bind_generates_resource()) {
 681         *params = bound_array_buffer_id_;
 682         return true;
 683       }
 684       return false;
 685     case GL_ELEMENT_ARRAY_BUFFER_BINDING:
 686       if (share_group_->bind_generates_resource()) {
 687         *params =
 688             vertex_array_object_manager_->bound_element_array_buffer();
 689         return true;
 690       }
 691       return false;
 692     case GL_PIXEL_PACK_TRANSFER_BUFFER_BINDING_CHROMIUM:
 693       *params = bound_pixel_pack_transfer_buffer_id_;
 694       return true;
 695     case GL_PIXEL_UNPACK_TRANSFER_BUFFER_BINDING_CHROMIUM:
 696       *params = bound_pixel_unpack_transfer_buffer_id_;
 697       return true;
 698     case GL_ACTIVE_TEXTURE:
 699       *params = active_texture_unit_ + GL_TEXTURE0;
 700       return true;
 701     case GL_TEXTURE_BINDING_2D:
 702       if (share_group_->bind_generates_resource()) {
 703         *params = texture_units_[active_texture_unit_].bound_texture_2d;
 704         return true;
 705       }
 706       return false;
 707     case GL_TEXTURE_BINDING_CUBE_MAP:
 708       if (share_group_->bind_generates_resource()) {
 709         *params = texture_units_[active_texture_unit_].bound_texture_cube_map;
 710         return true;
 711       }
 712       return false;
 713     case GL_TEXTURE_BINDING_EXTERNAL_OES:
 714       if (share_group_->bind_generates_resource()) {
 715         *params =
 716             texture_units_[active_texture_unit_].bound_texture_external_oes;
 717         return true;
 718       }
 719       return false;
 720     case GL_FRAMEBUFFER_BINDING:
 721       if (share_group_->bind_generates_resource()) {
 722         *params = bound_framebuffer_;
 723         return true;
 724       }
 725       return false;
 726     case GL_READ_FRAMEBUFFER_BINDING:
 727       if (IsChromiumFramebufferMultisampleAvailable() &&
 728           share_group_->bind_generates_resource()) {
 729         *params = bound_read_framebuffer_;
 730         return true;
 731       }
 732       return false;
 733     case GL_RENDERBUFFER_BINDING:
 734       if (share_group_->bind_generates_resource()) {
 735         *params = bound_renderbuffer_;
 736         return true;
 737       }
 738       return false;
 739     default:
 740       return false;
 741   }
 742 }
 743
 744 bool GLES2Implementation::GetBooleanvHelper(GLenum pname, GLboolean* params) {
 745   // TODO(gman): Make this handle pnames that return more than 1 value.
 746   GLint value;
 747   if (!GetHelper(pname, &value)) {
 748     return false;
 749   }
 750   *params = static_cast<GLboolean>(value);
 751   return true;
 752 }
 753
 754 bool GLES2Implementation::GetFloatvHelper(GLenum pname, GLfloat* params) {
 755   // TODO(gman): Make this handle pnames that return more than 1 value.
 756   GLint value;
 757   if (!GetHelper(pname, &value)) {
 758     return false;
 759   }
 760   *params = static_cast<GLfloat>(value);
 761   return true;
 762 }
 763
 764 bool GLES2Implementation::GetIntegervHelper(GLenum pname, GLint* params) {
 765   return GetHelper(pname, params);
 766 }
 767
 768 GLuint GLES2Implementation::GetMaxValueInBufferCHROMIUMHelper(
 769     GLuint buffer_id, GLsizei count, GLenum type, GLuint offset) {
 770   typedef cmds::GetMaxValueInBufferCHROMIUM::Result Result;
 771   Result* result = GetResultAs<Result*>();
 772   if (!result) {
 773     return 0;
 774   }
 775   *result = 0;
 776   helper_->GetMaxValueInBufferCHROMIUM(
 777       buffer_id, count, type, offset, GetResultShmId(), GetResultShmOffset());
 778   WaitForCmd();
 779   return *result;
 780 }
 781
 782 GLuint GLES2Implementation::GetMaxValueInBufferCHROMIUM(
 783     GLuint buffer_id, GLsizei count, GLenum type, GLuint offset) {
 784   GPU_CLIENT_SINGLE_THREAD_CHECK();
 785   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glGetMaxValueInBufferCHROMIUM("
 786                  << buffer_id << ", " << count << ", "
 787                  << GLES2Util::GetStringGetMaxIndexType(type)
 788                  << ", " << offset << ")");
 789   GLuint result = GetMaxValueInBufferCHROMIUMHelper(
 790       buffer_id, count, type, offset);
 791   GPU_CLIENT_LOG("returned " << result);
 792   CheckGLError();
 793   return result;
 794 }
 795
 796 void GLES2Implementation::RestoreElementAndArrayBuffers(bool restore) {
 797   if (restore) {
 798     RestoreArrayBuffer(restore);
 799     // Restore the element array binding.
 800     // We only need to restore it if it wasn't a client side array.
 801     if (vertex_array_object_manager_->bound_element_array_buffer() == 0) {
 802       helper_->BindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
 803     }
 804   }
 805 }
 806
 807 void GLES2Implementation::RestoreArrayBuffer(bool restore) {
 808   if (restore) {
 809     // Restore the user's current binding.
 810     helper_->BindBuffer(GL_ARRAY_BUFFER, bound_array_buffer_id_);
 811   }
 812 }
 813
 814 void GLES2Implementation::DrawElements(
 815     GLenum mode, GLsizei count, GLenum type, const void* indices) {
 816   GPU_CLIENT_SINGLE_THREAD_CHECK();
 817   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glDrawElements("
 818       << GLES2Util::GetStringDrawMode(mode) << ", "
 819       << count << ", "
 820       << GLES2Util::GetStringIndexType(type) << ", "
 821       << static_cast<const void*>(indices) << ")");
 822   if (count < 0) {
 823     SetGLError(GL_INVALID_VALUE, "glDrawElements", "count less than 0.");
 824     return;
 825   }
 826   if (count == 0) {
 827     return;
 828   }
 829   GLuint offset = 0;
 830   bool simulated = false;
 831   if (!vertex_array_object_manager_->SetupSimulatedIndexAndClientSideBuffers(
 832       "glDrawElements", this, helper_, count, type, 0, indices,
 833       &offset, &simulated)) {
 834     return;
 835   }
 836   helper_->DrawElements(mode, count, type, offset);
 837   RestoreElementAndArrayBuffers(simulated);
 838   CheckGLError();
 839 }
 840
 841 void GLES2Implementation::Flush() {
 842   GPU_CLIENT_SINGLE_THREAD_CHECK();
 843   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glFlush()");
 844   // Insert the cmd to call glFlush
 845   helper_->Flush();
 846   // Flush our command buffer
 847   // (tell the service to execute up to the flush cmd.)
 848   helper_->CommandBufferHelper::Flush();
 849   if (!surface_visible_ && free_everything_when_invisible_)
 850     FreeEverything();
 851 }
 852
 853 void GLES2Implementation::ShallowFlushCHROMIUM() {
 854   GPU_CLIENT_SINGLE_THREAD_CHECK();
 855   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glShallowFlushCHROMIUM()");
 856   // Flush our command buffer
 857   // (tell the service to execute up to the flush cmd.)
 858   helper_->CommandBufferHelper::Flush();
 859   // TODO(piman): Add the FreeEverything() logic here.
 860 }
 861
 862 void GLES2Implementation::Finish() {
 863   GPU_CLIENT_SINGLE_THREAD_CHECK();
 864   FinishHelper();
 865   if (!surface_visible_ && free_everything_when_invisible_)
 866     FreeEverything();
 867 }
 868
 869 void GLES2Implementation::ShallowFinishCHROMIUM() {
 870   GPU_CLIENT_SINGLE_THREAD_CHECK();
 871   // Flush our command buffer (tell the service to execute up to the flush cmd
 872   // and don't return until it completes).
 873   helper_->CommandBufferHelper::Finish();
 874 }
 875
 876 bool GLES2Implementation::MustBeContextLost() {
 877   bool context_lost = helper_->IsContextLost();
 878   if (!context_lost) {
 879     WaitForCmd();
 880     context_lost = helper_->IsContextLost();
 881   }
 882   CHECK(context_lost);
 883   return context_lost;
 884 }
 885
 886 void GLES2Implementation::FinishHelper() {
 887   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glFinish()");
 888   TRACE_EVENT0("gpu", "GLES2::Finish");
 889   // Insert the cmd to call glFinish
 890   helper_->Finish();
 891   // Finish our command buffer
 892   // (tell the service to execute up to the Finish cmd and wait for it to
 893   // execute.)
 894   helper_->CommandBufferHelper::Finish();
 895 }
 896
 897 void GLES2Implementation::SwapBuffers() {
 898   GPU_CLIENT_SINGLE_THREAD_CHECK();
 899   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glSwapBuffers()");
 900   // TODO(piman): Strictly speaking we'd want to insert the token after the
 901   // swap, but the state update with the updated token might not have happened
 902   // by the time the SwapBuffer callback gets called, forcing us to synchronize
 903   // with the GPU process more than needed. So instead, make it happen before.
 904   // All it means is that we could be slightly looser on the kMaxSwapBuffers
 905   // semantics if the client doesn't use the callback mechanism, and by chance
 906   // the scheduler yields between the InsertToken and the SwapBuffers.
 907   swap_buffers_tokens_.push(helper_->InsertToken());
 908   helper_->SwapBuffers();
 909   helper_->CommandBufferHelper::Flush();
 910   // Wait if we added too many swap buffers. Add 1 to kMaxSwapBuffers to
 911   // compensate for TODO above.
 912   if (swap_buffers_tokens_.size() > kMaxSwapBuffers + 1) {
 913     helper_->WaitForToken(swap_buffers_tokens_.front());
 914     swap_buffers_tokens_.pop();
 915   }
 916 }
 917
 918 void GLES2Implementation::GenSharedIdsCHROMIUM(
 919   GLuint namespace_id, GLuint id_offset, GLsizei n, GLuint* ids) {
 920   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glGenSharedIdsCHROMIUM("
 921       << namespace_id << ", " << id_offset << ", " << n << ", " <<
 922       static_cast<void*>(ids) << ")");
 923   TRACE_EVENT0("gpu", "GLES2::GenSharedIdsCHROMIUM");
 924   GLsizei num = n;
 925   GLuint* dst = ids;
 926   while (num) {
 927     ScopedTransferBufferArray<GLint> id_buffer(num, helper_, transfer_buffer_);
 928     if (!id_buffer.valid()) {
 929       return;
 930     }
 931     helper_->GenSharedIdsCHROMIUM(
 932         namespace_id, id_offset, id_buffer.num_elements(),
 933         id_buffer.shm_id(), id_buffer.offset());
 934     WaitForCmd();
 935     memcpy(dst, id_buffer.address(), sizeof(*dst) * id_buffer.num_elements());
 936     num -= id_buffer.num_elements();
 937     dst += id_buffer.num_elements();
 938   }
 939   GPU_CLIENT_LOG_CODE_BLOCK({
 940     for (GLsizei i = 0; i < n; ++i) {
 941       GPU_CLIENT_LOG("  " << i << ": " << namespace_id << ", " << ids[i]);
 942     }
 943   });
 944 }
 945
 946 void GLES2Implementation::DeleteSharedIdsCHROMIUM(
 947     GLuint namespace_id, GLsizei n, const GLuint* ids) {
 948   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glDeleteSharedIdsCHROMIUM("
 949       << namespace_id << ", " << n << ", "
 950       << static_cast<const void*>(ids) << ")");
 951   GPU_CLIENT_LOG_CODE_BLOCK({
 952     for (GLsizei i = 0; i < n; ++i) {
 953       GPU_CLIENT_LOG("  " << i << ": " << namespace_id << ", "  << ids[i]);
 954     }
 955   });
 956   TRACE_EVENT0("gpu", "GLES2::DeleteSharedIdsCHROMIUM");
 957   while (n) {
 958     ScopedTransferBufferArray<GLint> id_buffer(n, helper_, transfer_buffer_);
 959     if (!id_buffer.valid()) {
 960       return;
 961     }
 962     memcpy(id_buffer.address(), ids, sizeof(*ids) * id_buffer.num_elements());
 963     helper_->DeleteSharedIdsCHROMIUM(
 964         namespace_id, id_buffer.num_elements(),
 965         id_buffer.shm_id(), id_buffer.offset());
 966     WaitForCmd();
 967     n -= id_buffer.num_elements();
 968     ids += id_buffer.num_elements();
 969   }
 970 }
 971
 972 void GLES2Implementation::RegisterSharedIdsCHROMIUM(
 973     GLuint namespace_id, GLsizei n, const GLuint* ids) {
 974   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glRegisterSharedIdsCHROMIUM("
 975      << namespace_id << ", " << n << ", "
 976      << static_cast<const void*>(ids) << ")");
 977   GPU_CLIENT_LOG_CODE_BLOCK({
 978     for (GLsizei i = 0; i < n; ++i) {
 979       GPU_CLIENT_LOG("  " << i << ": "  << namespace_id << ", " << ids[i]);
 980     }
 981   });
 982   TRACE_EVENT0("gpu", "GLES2::RegisterSharedIdsCHROMIUM");
 983   while (n) {
 984     ScopedTransferBufferArray<GLint> id_buffer(n, helper_, transfer_buffer_);
 985     if (!id_buffer.valid()) {
 986       return;
 987     }
 988     memcpy(id_buffer.address(), ids, sizeof(*ids) * id_buffer.num_elements());
 989     helper_->RegisterSharedIdsCHROMIUM(
 990         namespace_id, id_buffer.num_elements(),
 991         id_buffer.shm_id(), id_buffer.offset());
 992     WaitForCmd();
 993     n -= id_buffer.num_elements();
 994     ids += id_buffer.num_elements();
 995   }
 996 }
 997
 998 void GLES2Implementation::BindAttribLocation(
 999   GLuint program, GLuint index, const char* name) {
1000   GPU_CLIENT_SINGLE_THREAD_CHECK();
1001   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glBindAttribLocation("
1002       << program << ", " << index << ", " << name << ")");
1003   SetBucketAsString(kResultBucketId, name);
1004   helper_->BindAttribLocationBucket(program, index, kResultBucketId);
1005   helper_->SetBucketSize(kResultBucketId, 0);
1006   CheckGLError();
1007 }
1008
1009 void GLES2Implementation::BindUniformLocationCHROMIUM(
1010   GLuint program, GLint location, const char* name) {
1011   GPU_CLIENT_SINGLE_THREAD_CHECK();
1012   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glBindUniformLocationCHROMIUM("
1013       << program << ", " << location << ", " << name << ")");
1014   SetBucketAsString(kResultBucketId, name);
1015   helper_->BindUniformLocationCHROMIUMBucket(
1016       program, location, kResultBucketId);
1017   helper_->SetBucketSize(kResultBucketId, 0);
1018   CheckGLError();
1019 }
1020
1021 void GLES2Implementation::GetVertexAttribPointerv(
1022     GLuint index, GLenum pname, void** ptr) {
1023   GPU_CLIENT_SINGLE_THREAD_CHECK();
1024   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glGetVertexAttribPointer("
1025       << index << ", " << GLES2Util::GetStringVertexPointer(pname) << ", "
1026       << static_cast<void*>(ptr) << ")");
1027   GPU_CLIENT_LOG_CODE_BLOCK(int32 num_results = 1);
1028   if (!vertex_array_object_manager_->GetAttribPointer(index, pname, ptr)) {
1029     TRACE_EVENT0("gpu", "GLES2::GetVertexAttribPointerv");
1030     typedef cmds::GetVertexAttribPointerv::Result Result;
1031     Result* result = GetResultAs<Result*>();
1032     if (!result) {
1033       return;
1034     }
1035     result->SetNumResults(0);
1036     helper_->GetVertexAttribPointerv(
1037       index, pname, GetResultShmId(), GetResultShmOffset());
1038     WaitForCmd();
1039     result->CopyResult(ptr);
1040     GPU_CLIENT_LOG_CODE_BLOCK(num_results = result->GetNumResults());
1041   }
1042   GPU_CLIENT_LOG_CODE_BLOCK({
1043     for (int32 i = 0; i < num_results; ++i) {
1044       GPU_CLIENT_LOG("  " << i << ": " << ptr[i]);
1045     }
1046   });
1047   CheckGLError();
1048 }
1049
1050 bool GLES2Implementation::DeleteProgramHelper(GLuint program) {
1051   if (!GetIdHandler(id_namespaces::kProgramsAndShaders)->FreeIds(
1052       this, 1, &program, &GLES2Implementation::DeleteProgramStub)) {
1053     SetGLError(
1054         GL_INVALID_VALUE,
1055         "glDeleteProgram", "id not created by this context.");
1056     return false;
1057   }
1058   if (program == current_program_) {
1059     current_program_ = 0;
1060   }
1061   return true;
1062 }
1063
1064 void GLES2Implementation::DeleteProgramStub(
1065     GLsizei n, const GLuint* programs) {
1066   DCHECK_EQ(1, n);
1067   share_group_->program_info_manager()->DeleteInfo(programs[0]);
1068   helper_->DeleteProgram(programs[0]);
1069 }
1070
1071 bool GLES2Implementation::DeleteShaderHelper(GLuint shader) {
1072   if (!GetIdHandler(id_namespaces::kProgramsAndShaders)->FreeIds(
1073       this, 1, &shader, &GLES2Implementation::DeleteShaderStub)) {
1074     SetGLError(
1075         GL_INVALID_VALUE,
1076         "glDeleteShader", "id not created by this context.");
1077     return false;
1078   }
1079   return true;
1080 }
1081
1082 void GLES2Implementation::DeleteShaderStub(
1083     GLsizei n, const GLuint* shaders) {
1084   DCHECK_EQ(1, n);
1085   share_group_->program_info_manager()->DeleteInfo(shaders[0]);
1086   helper_->DeleteShader(shaders[0]);
1087 }
1088
1089
1090 GLint GLES2Implementation::GetAttribLocationHelper(
1091     GLuint program, const char* name) {
1092   typedef cmds::GetAttribLocationBucket::Result Result;
1093   Result* result = GetResultAs<Result*>();
1094   if (!result) {
1095     return -1;
1096   }
1097   *result = -1;
1098   SetBucketAsCString(kResultBucketId, name);
1099   helper_->GetAttribLocationBucket(
1100       program, kResultBucketId, GetResultShmId(), GetResultShmOffset());
1101   WaitForCmd();
1102   helper_->SetBucketSize(kResultBucketId, 0);
1103   return *result;
1104 }
1105
1106 GLint GLES2Implementation::GetAttribLocation(
1107     GLuint program, const char* name) {
1108   GPU_CLIENT_SINGLE_THREAD_CHECK();
1109   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glGetAttribLocation(" << program
1110       << ", " << name << ")");
1111   TRACE_EVENT0("gpu", "GLES2::GetAttribLocation");
1112   GLint loc = share_group_->program_info_manager()->GetAttribLocation(
1113       this, program, name);
1114   GPU_CLIENT_LOG("returned " << loc);
1115   CheckGLError();
1116   return loc;
1117 }
1118
1119 GLint GLES2Implementation::GetUniformLocationHelper(
1120     GLuint program, const char* name) {
1121   typedef cmds::GetUniformLocationBucket::Result Result;
1122   Result* result = GetResultAs<Result*>();
1123   if (!result) {
1124     return -1;
1125   }
1126   *result = -1;
1127   SetBucketAsCString(kResultBucketId, name);
1128   helper_->GetUniformLocationBucket(program, kResultBucketId,
1129                                     GetResultShmId(), GetResultShmOffset());
1130   WaitForCmd();
1131   helper_->SetBucketSize(kResultBucketId, 0);
1132   return *result;
1133 }
1134
1135 GLint GLES2Implementation::GetUniformLocation(
1136     GLuint program, const char* name) {
1137   GPU_CLIENT_SINGLE_THREAD_CHECK();
1138   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glGetUniformLocation(" << program
1139       << ", " << name << ")");
1140   TRACE_EVENT0("gpu", "GLES2::GetUniformLocation");
1141   GLint loc = share_group_->program_info_manager()->GetUniformLocation(
1142       this, program, name);
1143   GPU_CLIENT_LOG("returned " << loc);
1144   CheckGLError();
1145   return loc;
1146 }
1147
1148 void GLES2Implementation::UseProgram(GLuint program) {
1149   GPU_CLIENT_SINGLE_THREAD_CHECK();
1150   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glUseProgram(" << program << ")");
1151   if (current_program_ != program) {
1152     current_program_ = program;
1153     helper_->UseProgram(program);
1154   }
1155   CheckGLError();
1156 }
1157
1158 bool GLES2Implementation::GetProgramivHelper(
1159     GLuint program, GLenum pname, GLint* params) {
1160   bool got_value = share_group_->program_info_manager()->GetProgramiv(
1161       this, program, pname, params);
1162   GPU_CLIENT_LOG_CODE_BLOCK({
1163     if (got_value) {
1164       GPU_CLIENT_LOG("  0: " << *params);
1165     }
1166   });
1167   return got_value;
1168 }
1169
1170 void GLES2Implementation::LinkProgram(GLuint program) {
1171   GPU_CLIENT_SINGLE_THREAD_CHECK();
1172   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glLinkProgram(" << program << ")");
1173   helper_->LinkProgram(program);
1174   share_group_->program_info_manager()->CreateInfo(program);
1175   CheckGLError();
1176 }
1177
1178 void GLES2Implementation::ShaderBinary(
1179     GLsizei n, const GLuint* shaders, GLenum binaryformat, const void* binary,
1180     GLsizei length) {
1181   GPU_CLIENT_SINGLE_THREAD_CHECK();
1182   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glShaderBinary(" << n << ", "
1183       << static_cast<const void*>(shaders) << ", "
1184       << GLES2Util::GetStringEnum(binaryformat) << ", "
1185       << static_cast<const void*>(binary) << ", "
1186       << length << ")");
1187   if (n < 0) {
1188     SetGLError(GL_INVALID_VALUE, "glShaderBinary", "n < 0.");
1189     return;
1190   }
1191   if (length < 0) {
1192     SetGLError(GL_INVALID_VALUE, "glShaderBinary", "length < 0.");
1193     return;
1194   }
1195   // TODO(gman): ShaderBinary should use buckets.
1196   unsigned int shader_id_size = n * sizeof(*shaders);
1197   ScopedTransferBufferArray<GLint> buffer(
1198       shader_id_size + length, helper_, transfer_buffer_);
1199   if (!buffer.valid() || buffer.num_elements() != shader_id_size + length) {
1200     SetGLError(GL_OUT_OF_MEMORY, "glShaderBinary", "out of memory.");
1201     return;
1202   }
1203   void* shader_ids = buffer.elements();
1204   void* shader_data = buffer.elements() + shader_id_size;
1205   memcpy(shader_ids, shaders, shader_id_size);
1206   memcpy(shader_data, binary, length);
1207   helper_->ShaderBinary(
1208       n,
1209       buffer.shm_id(),
1210       buffer.offset(),
1211       binaryformat,
1212       buffer.shm_id(),
1213       buffer.offset() + shader_id_size,
1214       length);
1215   CheckGLError();
1216 }
1217
1218 void GLES2Implementation::PixelStorei(GLenum pname, GLint param) {
1219   GPU_CLIENT_SINGLE_THREAD_CHECK();
1220   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glPixelStorei("
1221       << GLES2Util::GetStringPixelStore(pname) << ", "
1222       << param << ")");
1223   switch (pname) {
1224     case GL_PACK_ALIGNMENT:
1225         pack_alignment_ = param;
1226         break;
1227     case GL_UNPACK_ALIGNMENT:
1228         unpack_alignment_ = param;
1229         break;
1230     case GL_UNPACK_ROW_LENGTH_EXT:
1231         unpack_row_length_ = param;
1232         return;
1233     case GL_UNPACK_SKIP_ROWS_EXT:
1234         unpack_skip_rows_ = param;
1235         return;
1236     case GL_UNPACK_SKIP_PIXELS_EXT:
1237         unpack_skip_pixels_ = param;
1238         return;
1239     case GL_UNPACK_FLIP_Y_CHROMIUM:
1240         unpack_flip_y_ = (param != 0);
1241         break;
1242     case GL_PACK_REVERSE_ROW_ORDER_ANGLE:
1243         pack_reverse_row_order_ =
1244             IsAnglePackReverseRowOrderAvailable() ? (param != 0) : false;
1245         break;
1246     default:
1247         break;
1248   }
1249   helper_->PixelStorei(pname, param);
1250   CheckGLError();
1251 }
1252
1253
1254 void GLES2Implementation::VertexAttribPointer(
1255     GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride,
1256     const void* ptr) {
1257   GPU_CLIENT_SINGLE_THREAD_CHECK();
1258   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glVertexAttribPointer("
1259       << index << ", "
1260       << size << ", "
1261       << GLES2Util::GetStringVertexAttribType(type) << ", "
1262       << GLES2Util::GetStringBool(normalized) << ", "
1263       << stride << ", "
1264       << static_cast<const void*>(ptr) << ")");
1265   // Record the info on the client side.
1266   if (!vertex_array_object_manager_->SetAttribPointer(
1267       bound_array_buffer_id_, index, size, type, normalized, stride, ptr)) {
1268     SetGLError(GL_INVALID_OPERATION, "glVertexAttribPointer",
1269                "client side arrays are not allowed in vertex array objects.");
1270     return;
1271   }
1272 #if defined(GLES2_SUPPORT_CLIENT_SIDE_ARRAYS)
1273   if (bound_array_buffer_id_ != 0) {
1274     // Only report NON client side buffers to the service.
1275     helper_->VertexAttribPointer(index, size, type, normalized, stride,
1276                                  ToGLuint(ptr));
1277   }
1278 #else  // !defined(GLES2_SUPPORT_CLIENT_SIDE_ARRAYS)
1279   helper_->VertexAttribPointer(index, size, type, normalized, stride,
1280                                ToGLuint(ptr));
1281 #endif  // !defined(GLES2_SUPPORT_CLIENT_SIDE_ARRAYS)
1282   CheckGLError();
1283 }
1284
1285 void GLES2Implementation::VertexAttribDivisorANGLE(
1286     GLuint index, GLuint divisor) {
1287   GPU_CLIENT_SINGLE_THREAD_CHECK();
1288   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glVertexAttribDivisorANGLE("
1289       << index << ", "
1290       << divisor << ") ");
1291   // Record the info on the client side.
1292   vertex_array_object_manager_->SetAttribDivisor(index, divisor);
1293   helper_->VertexAttribDivisorANGLE(index, divisor);
1294   CheckGLError();
1295 }
1296
1297 void GLES2Implementation::ShaderSource(
1298     GLuint shader, GLsizei count, const GLchar* const* source, const GLint* length) {
1299   GPU_CLIENT_SINGLE_THREAD_CHECK();
1300   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glShaderSource("
1301       << shader << ", " << count << ", "
1302       << static_cast<const void*>(source) << ", "
1303       << static_cast<const void*>(length) << ")");
1304   GPU_CLIENT_LOG_CODE_BLOCK({
1305     for (GLsizei ii = 0; ii < count; ++ii) {
1306       if (source[ii]) {
1307         if (length && length[ii] >= 0) {
1308           std::string str(source[ii], length[ii]);
1309           GPU_CLIENT_LOG("  " << ii << ": ---\n" << str << "\n---");
1310         } else {
1311           GPU_CLIENT_LOG("  " << ii << ": ---\n" << source[ii] << "\n---");
1312         }
1313       } else {
1314         GPU_CLIENT_LOG("  " << ii << ": NULL");
1315       }
1316     }
1317   });
1318   if (count < 0) {
1319     SetGLError(GL_INVALID_VALUE, "glShaderSource", "count < 0");
1320     return;
1321   }
1322   if (shader == 0) {
1323     SetGLError(GL_INVALID_VALUE, "glShaderSource", "shader == 0");
1324     return;
1325   }
1326
1327   // Compute the total size.
1328   uint32 total_size = 1;
1329   for (GLsizei ii = 0; ii < count; ++ii) {
1330     if (source[ii]) {
1331       total_size += (length && length[ii] >= 0) ?
1332           static_cast<size_t>(length[ii]) : strlen(source[ii]);
1333     }
1334   }
1335
1336   // Concatenate all the strings in to a bucket on the service.
1337   helper_->SetBucketSize(kResultBucketId, total_size);
1338   uint32 offset = 0;
1339   for (GLsizei ii = 0; ii <= count; ++ii) {
1340     const char* src = ii < count ? source[ii] : "";
1341     if (src) {
1342       uint32 size = ii < count ?
1343           (length ? static_cast<size_t>(length[ii]) : strlen(src)) : 1;
1344       while (size) {
1345         ScopedTransferBufferPtr buffer(size, helper_, transfer_buffer_);
1346         if (!buffer.valid()) {
1347           return;
1348         }
1349         memcpy(buffer.address(), src, buffer.size());
1350         helper_->SetBucketData(kResultBucketId, offset, buffer.size(),
1351                                buffer.shm_id(), buffer.offset());
1352         offset += buffer.size();
1353         src += buffer.size();
1354         size -= buffer.size();
1355       }
1356     }
1357   }
1358
1359   DCHECK_EQ(total_size, offset);
1360
1361   helper_->ShaderSourceBucket(shader, kResultBucketId);
1362   helper_->SetBucketSize(kResultBucketId, 0);
1363   CheckGLError();
1364 }
1365
1366 void GLES2Implementation::BufferDataHelper(
1367     GLenum target, GLsizeiptr size, const void* data, GLenum usage) {
1368   if (size < 0) {
1369     SetGLError(GL_INVALID_VALUE, "glBufferData", "size < 0");
1370     return;
1371   }
1372
1373   GLuint buffer_id;
1374   if (GetBoundPixelTransferBuffer(target, "glBufferData", &buffer_id)) {
1375     if (!buffer_id) {
1376       return;
1377     }
1378
1379     BufferTracker::Buffer* buffer = buffer_tracker_->GetBuffer(buffer_id);
1380     if (buffer) {
1381       // Free buffer memory, pending the passage of a token.
1382       buffer_tracker_->FreePendingToken(buffer, helper_->InsertToken());
1383
1384       // Remove old buffer.
1385       buffer_tracker_->RemoveBuffer(buffer_id);
1386     }
1387
1388     // Create new buffer.
1389     buffer = buffer_tracker_->CreateBuffer(buffer_id, size);
1390     DCHECK(buffer);
1391     if (buffer->address() && data)
1392       memcpy(buffer->address(), data, size);
1393     return;
1394   }
1395
1396   if (size == 0) {
1397     return;
1398   }
1399
1400   // If there is no data just send BufferData
1401   if (!data) {
1402     helper_->BufferData(target, size, 0, 0, usage);
1403     return;
1404   }
1405
1406   // See if we can send all at once.
1407   ScopedTransferBufferPtr buffer(size, helper_, transfer_buffer_);
1408   if (!buffer.valid()) {
1409     return;
1410   }
1411
1412   if (buffer.size() >= static_cast<unsigned int>(size)) {
1413     memcpy(buffer.address(), data, size);
1414     helper_->BufferData(
1415         target,
1416         size,
1417         buffer.shm_id(),
1418         buffer.offset(),
1419         usage);
1420     return;
1421   }
1422
1423   // Make the buffer with BufferData then send via BufferSubData
1424   helper_->BufferData(target, size, 0, 0, usage);
1425   BufferSubDataHelperImpl(target, 0, size, data, &buffer);
1426   CheckGLError();
1427 }
1428
1429 void GLES2Implementation::BufferData(
1430     GLenum target, GLsizeiptr size, const void* data, GLenum usage) {
1431   GPU_CLIENT_SINGLE_THREAD_CHECK();
1432   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glBufferData("
1433       << GLES2Util::GetStringBufferTarget(target) << ", "
1434       << size << ", "
1435       << static_cast<const void*>(data) << ", "
1436       << GLES2Util::GetStringBufferUsage(usage) << ")");
1437   BufferDataHelper(target, size, data, usage);
1438   CheckGLError();
1439 }
1440
1441 void GLES2Implementation::BufferSubDataHelper(
1442     GLenum target, GLintptr offset, GLsizeiptr size, const void* data) {
1443   if (size == 0) {
1444     return;
1445   }
1446
1447   if (size < 0) {
1448     SetGLError(GL_INVALID_VALUE, "glBufferSubData", "size < 0");
1449     return;
1450   }
1451
1452   GLuint buffer_id;
1453   if (GetBoundPixelTransferBuffer(target, "glBufferSubData", &buffer_id)) {
1454     if (!buffer_id) {
1455       return;
1456     }
1457     BufferTracker::Buffer* buffer = buffer_tracker_->GetBuffer(buffer_id);
1458     if (!buffer) {
1459       SetGLError(GL_INVALID_VALUE, "glBufferSubData", "unknown buffer");
1460       return;
1461     }
1462
1463     int32 end = 0;
1464     int32 buffer_size = buffer->size();
1465     if (!SafeAddInt32(offset, size, &end) || end > buffer_size) {
1466       SetGLError(GL_INVALID_VALUE, "glBufferSubData", "out of range");
1467       return;
1468     }
1469
1470     if (buffer->address() && data)
1471       memcpy(static_cast<uint8*>(buffer->address()) + offset, data, size);
1472     return;
1473   }
1474
1475   ScopedTransferBufferPtr buffer(size, helper_, transfer_buffer_);
1476   BufferSubDataHelperImpl(target, offset, size, data, &buffer);
1477 }
1478
1479 void GLES2Implementation::BufferSubDataHelperImpl(
1480     GLenum target, GLintptr offset, GLsizeiptr size, const void* data,
1481     ScopedTransferBufferPtr* buffer) {
1482   DCHECK(buffer);
1483   DCHECK_GT(size, 0);
1484
1485   const int8* source = static_cast<const int8*>(data);
1486   while (size) {
1487     if (!buffer->valid() || buffer->size() == 0) {
1488       buffer->Reset(size);
1489       if (!buffer->valid()) {
1490         return;
1491       }
1492     }
1493     memcpy(buffer->address(), source, buffer->size());
1494     helper_->BufferSubData(
1495         target, offset, buffer->size(), buffer->shm_id(), buffer->offset());
1496     offset += buffer->size();
1497     source += buffer->size();
1498     size -= buffer->size();
1499     buffer->Release();
1500   }
1501 }
1502
1503 void GLES2Implementation::BufferSubData(
1504     GLenum target, GLintptr offset, GLsizeiptr size, const void* data) {
1505   GPU_CLIENT_SINGLE_THREAD_CHECK();
1506   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glBufferSubData("
1507       << GLES2Util::GetStringBufferTarget(target) << ", "
1508       << offset << ", " << size << ", "
1509       << static_cast<const void*>(data) << ")");
1510   BufferSubDataHelper(target, offset, size, data);
1511   CheckGLError();
1512 }
1513
1514 bool GLES2Implementation::GetBoundPixelTransferBuffer(
1515     GLenum target,
1516     const char* function_name,
1517     GLuint* buffer_id) {
1518   *buffer_id = 0;
1519
1520   switch (target) {
1521     case GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM:
1522       *buffer_id = bound_pixel_pack_transfer_buffer_id_;
1523       break;
1524     case GL_PIXEL_UNPACK_TRANSFER_BUFFER_CHROMIUM:
1525       *buffer_id = bound_pixel_unpack_transfer_buffer_id_;
1526       break;
1527     default:
1528       // Unknown target
1529       return false;
1530   }
1531   if (!*buffer_id) {
1532     SetGLError(GL_INVALID_OPERATION, function_name, "no buffer bound");
1533   }
1534   return true;
1535 }
1536
1537 BufferTracker::Buffer*
1538 GLES2Implementation::GetBoundPixelUnpackTransferBufferIfValid(
1539     GLuint buffer_id,
1540     const char* function_name,
1541     GLuint offset, GLsizei size)
1542 {
1543   DCHECK(buffer_id);
1544   BufferTracker::Buffer* buffer = buffer_tracker_->GetBuffer(buffer_id);
1545   if (!buffer) {
1546     SetGLError(GL_INVALID_OPERATION, function_name, "invalid buffer");
1547     return NULL;
1548   }
1549   if (buffer->mapped()) {
1550     SetGLError(GL_INVALID_OPERATION, function_name, "buffer mapped");
1551     return NULL;
1552   }
1553   if ((buffer->size() - offset) < static_cast<GLuint>(size)) {
1554     SetGLError(GL_INVALID_VALUE, function_name, "unpack size to large");
1555     return NULL;
1556   }
1557   return buffer;
1558 }
1559
1560 void GLES2Implementation::CompressedTexImage2D(
1561     GLenum target, GLint level, GLenum internalformat, GLsizei width,
1562     GLsizei height, GLint border, GLsizei image_size, const void* data) {
1563   GPU_CLIENT_SINGLE_THREAD_CHECK();
1564   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glCompressedTexImage2D("
1565       << GLES2Util::GetStringTextureTarget(target) << ", "
1566       << level << ", "
1567       << GLES2Util::GetStringCompressedTextureFormat(internalformat) << ", "
1568       << width << ", " << height << ", " << border << ", "
1569       << image_size << ", "
1570       << static_cast<const void*>(data) << ")");
1571   if (width < 0 || height < 0 || level < 0) {
1572     SetGLError(GL_INVALID_VALUE, "glCompressedTexImage2D", "dimension < 0");
1573     return;
1574   }
1575   if (height == 0 || width == 0) {
1576     return;
1577   }
1578   // If there's a pixel unpack buffer bound use it when issuing
1579   // CompressedTexImage2D.
1580   if (bound_pixel_unpack_transfer_buffer_id_) {
1581     GLuint offset = ToGLuint(data);
1582     BufferTracker::Buffer* buffer = GetBoundPixelUnpackTransferBufferIfValid(
1583         bound_pixel_unpack_transfer_buffer_id_,
1584         "glCompressedTexImage2D", offset, image_size);
1585     if (buffer && buffer->shm_id() != -1) {
1586       helper_->CompressedTexImage2D(
1587           target, level, internalformat, width, height, border, image_size,
1588           buffer->shm_id(), buffer->shm_offset() + offset);
1589       buffer->set_transfer_ready_token(helper_->InsertToken());
1590     }
1591     return;
1592   }
1593   SetBucketContents(kResultBucketId, data, image_size);
1594   helper_->CompressedTexImage2DBucket(
1595       target, level, internalformat, width, height, border, kResultBucketId);
1596   // Free the bucket. This is not required but it does free up the memory.
1597   // and we don't have to wait for the result so from the client's perspective
1598   // it's cheap.
1599   helper_->SetBucketSize(kResultBucketId, 0);
1600   CheckGLError();
1601 }
1602
1603 void GLES2Implementation::CompressedTexSubImage2D(
1604     GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width,
1605     GLsizei height, GLenum format, GLsizei image_size, const void* data) {
1606   GPU_CLIENT_SINGLE_THREAD_CHECK();
1607   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glCompressedTexSubImage2D("
1608       << GLES2Util::GetStringTextureTarget(target) << ", "
1609       << level << ", "
1610       << xoffset << ", " << yoffset << ", "
1611       << width << ", " << height << ", "
1612       << GLES2Util::GetStringCompressedTextureFormat(format) << ", "
1613       << image_size << ", "
1614       << static_cast<const void*>(data) << ")");
1615   if (width < 0 || height < 0 || level < 0) {
1616     SetGLError(GL_INVALID_VALUE, "glCompressedTexSubImage2D", "dimension < 0");
1617     return;
1618   }
1619   // If there's a pixel unpack buffer bound use it when issuing
1620   // CompressedTexSubImage2D.
1621   if (bound_pixel_unpack_transfer_buffer_id_) {
1622     GLuint offset = ToGLuint(data);
1623     BufferTracker::Buffer* buffer = GetBoundPixelUnpackTransferBufferIfValid(
1624         bound_pixel_unpack_transfer_buffer_id_,
1625         "glCompressedTexSubImage2D", offset, image_size);
1626     if (buffer && buffer->shm_id() != -1) {
1627       helper_->CompressedTexSubImage2D(
1628           target, level, xoffset, yoffset, width, height, format, image_size,
1629           buffer->shm_id(), buffer->shm_offset() + offset);
1630       buffer->set_transfer_ready_token(helper_->InsertToken());
1631       CheckGLError();
1632     }
1633     return;
1634   }
1635   SetBucketContents(kResultBucketId, data, image_size);
1636   helper_->CompressedTexSubImage2DBucket(
1637       target, level, xoffset, yoffset, width, height, format, kResultBucketId);
1638   // Free the bucket. This is not required but it does free up the memory.
1639   // and we don't have to wait for the result so from the client's perspective
1640   // it's cheap.
1641   helper_->SetBucketSize(kResultBucketId, 0);
1642   CheckGLError();
1643 }
1644
1645 namespace {
1646
1647 void CopyRectToBuffer(
1648     const void* pixels,
1649     uint32 height,
1650     uint32 unpadded_row_size,
1651     uint32 pixels_padded_row_size,
1652     bool flip_y,
1653     void* buffer,
1654     uint32 buffer_padded_row_size) {
1655   const int8* source = static_cast<const int8*>(pixels);
1656   int8* dest = static_cast<int8*>(buffer);
1657   if (flip_y || pixels_padded_row_size != buffer_padded_row_size) {
1658     if (flip_y) {
1659       dest += buffer_padded_row_size * (height - 1);
1660     }
1661     // the last row is copied unpadded at the end
1662     for (; height > 1; --height) {
1663       memcpy(dest, source, buffer_padded_row_size);
1664       if (flip_y) {
1665         dest -= buffer_padded_row_size;
1666       } else {
1667         dest += buffer_padded_row_size;
1668       }
1669       source += pixels_padded_row_size;
1670     }
1671     memcpy(dest, source, unpadded_row_size);
1672   } else {
1673     uint32 size = (height - 1) * pixels_padded_row_size + unpadded_row_size;
1674     memcpy(dest, source, size);
1675   }
1676 }
1677
1678 }  // anonymous namespace
1679
1680 void GLES2Implementation::TexImage2D(
1681     GLenum target, GLint level, GLint internalformat, GLsizei width,
1682     GLsizei height, GLint border, GLenum format, GLenum type,
1683     const void* pixels) {
1684   GPU_CLIENT_SINGLE_THREAD_CHECK();
1685   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glTexImage2D("
1686       << GLES2Util::GetStringTextureTarget(target) << ", "
1687       << level << ", "
1688       << GLES2Util::GetStringTextureInternalFormat(internalformat) << ", "
1689       << width << ", " << height << ", " << border << ", "
1690       << GLES2Util::GetStringTextureFormat(format) << ", "
1691       << GLES2Util::GetStringPixelType(type) << ", "
1692       << static_cast<const void*>(pixels) << ")");
1693   if (level < 0 || height < 0 || width < 0) {
1694     SetGLError(GL_INVALID_VALUE, "glTexImage2D", "dimension < 0");
1695     return;
1696   }
1697   uint32 size;
1698   uint32 unpadded_row_size;
1699   uint32 padded_row_size;
1700   if (!GLES2Util::ComputeImageDataSizes(
1701           width, height, format, type, unpack_alignment_, &size,
1702           &unpadded_row_size, &padded_row_size)) {
1703     SetGLError(GL_INVALID_VALUE, "glTexImage2D", "image size too large");
1704     return;
1705   }
1706
1707   // If there's a pixel unpack buffer bound use it when issuing TexImage2D.
1708   if (bound_pixel_unpack_transfer_buffer_id_) {
1709     GLuint offset = ToGLuint(pixels);
1710     BufferTracker::Buffer* buffer = GetBoundPixelUnpackTransferBufferIfValid(
1711         bound_pixel_unpack_transfer_buffer_id_,
1712         "glTexImage2D", offset, size);
1713     if (buffer && buffer->shm_id() != -1) {
1714       helper_->TexImage2D(
1715           target, level, internalformat, width, height, border, format, type,
1716           buffer->shm_id(), buffer->shm_offset() + offset);
1717       buffer->set_transfer_ready_token(helper_->InsertToken());
1718       CheckGLError();
1719     }
1720     return;
1721   }
1722
1723   // If there's no data just issue TexImage2D
1724   if (!pixels) {
1725     helper_->TexImage2D(
1726        target, level, internalformat, width, height, border, format, type,
1727        0, 0);
1728     CheckGLError();
1729     return;
1730   }
1731
1732   // compute the advance bytes per row for the src pixels
1733   uint32 src_padded_row_size;
1734   if (unpack_row_length_ > 0) {
1735     if (!GLES2Util::ComputeImagePaddedRowSize(
1736         unpack_row_length_, format, type, unpack_alignment_,
1737         &src_padded_row_size)) {
1738       SetGLError(
1739           GL_INVALID_VALUE, "glTexImage2D", "unpack row length too large");
1740       return;
1741     }
1742   } else {
1743     src_padded_row_size = padded_row_size;
1744   }
1745
1746   // advance pixels pointer past the skip rows and skip pixels
1747   pixels = reinterpret_cast<const int8*>(pixels) +
1748       unpack_skip_rows_ * src_padded_row_size;
1749   if (unpack_skip_pixels_) {
1750     uint32 group_size = GLES2Util::ComputeImageGroupSize(format, type);
1751     pixels = reinterpret_cast<const int8*>(pixels) +
1752         unpack_skip_pixels_ * group_size;
1753   }
1754
1755   // Check if we can send it all at once.
1756   ScopedTransferBufferPtr buffer(size, helper_, transfer_buffer_);
1757   if (!buffer.valid()) {
1758     return;
1759   }
1760
1761   if (buffer.size() >= size) {
1762     CopyRectToBuffer(
1763         pixels, height, unpadded_row_size, src_padded_row_size, unpack_flip_y_,
1764         buffer.address(), padded_row_size);
1765     helper_->TexImage2D(
1766         target, level, internalformat, width, height, border, format, type,
1767         buffer.shm_id(), buffer.offset());
1768     CheckGLError();
1769     return;
1770   }
1771
1772   // No, so send it using TexSubImage2D.
1773   helper_->TexImage2D(
1774      target, level, internalformat, width, height, border, format, type,
1775      0, 0);
1776   TexSubImage2DImpl(
1777       target, level, 0, 0, width, height, format, type, unpadded_row_size,
1778       pixels, src_padded_row_size, GL_TRUE, &buffer, padded_row_size);
1779   CheckGLError();
1780 }
1781
1782 void GLES2Implementation::TexSubImage2D(
1783     GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width,
1784     GLsizei height, GLenum format, GLenum type, const void* pixels) {
1785   GPU_CLIENT_SINGLE_THREAD_CHECK();
1786   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glTexSubImage2D("
1787       << GLES2Util::GetStringTextureTarget(target) << ", "
1788       << level << ", "
1789       << xoffset << ", " << yoffset << ", "
1790       << width << ", " << height << ", "
1791       << GLES2Util::GetStringTextureFormat(format) << ", "
1792       << GLES2Util::GetStringPixelType(type) << ", "
1793       << static_cast<const void*>(pixels) << ")");
1794
1795   if (level < 0 || height < 0 || width < 0) {
1796     SetGLError(GL_INVALID_VALUE, "glTexSubImage2D", "dimension < 0");
1797     return;
1798   }
1799   if (height == 0 || width == 0) {
1800     return;
1801   }
1802
1803   uint32 temp_size;
1804   uint32 unpadded_row_size;
1805   uint32 padded_row_size;
1806   if (!GLES2Util::ComputeImageDataSizes(
1807         width, height, format, type, unpack_alignment_, &temp_size,
1808         &unpadded_row_size, &padded_row_size)) {
1809     SetGLError(GL_INVALID_VALUE, "glTexSubImage2D", "size to large");
1810     return;
1811   }
1812
1813   // If there's a pixel unpack buffer bound use it when issuing TexSubImage2D.
1814   if (bound_pixel_unpack_transfer_buffer_id_) {
1815     GLuint offset = ToGLuint(pixels);
1816     BufferTracker::Buffer* buffer = GetBoundPixelUnpackTransferBufferIfValid(
1817         bound_pixel_unpack_transfer_buffer_id_,
1818         "glTexSubImage2D", offset, temp_size);
1819     if (buffer && buffer->shm_id() != -1) {
1820       helper_->TexSubImage2D(
1821           target, level, xoffset, yoffset, width, height, format, type,
1822           buffer->shm_id(), buffer->shm_offset() + offset, false);
1823       buffer->set_transfer_ready_token(helper_->InsertToken());
1824       CheckGLError();
1825     }
1826     return;
1827   }
1828
1829   // compute the advance bytes per row for the src pixels
1830   uint32 src_padded_row_size;
1831   if (unpack_row_length_ > 0) {
1832     if (!GLES2Util::ComputeImagePaddedRowSize(
1833         unpack_row_length_, format, type, unpack_alignment_,
1834         &src_padded_row_size)) {
1835       SetGLError(
1836           GL_INVALID_VALUE, "glTexImage2D", "unpack row length too large");
1837       return;
1838     }
1839   } else {
1840     src_padded_row_size = padded_row_size;
1841   }
1842
1843   // advance pixels pointer past the skip rows and skip pixels
1844   pixels = reinterpret_cast<const int8*>(pixels) +
1845       unpack_skip_rows_ * src_padded_row_size;
1846   if (unpack_skip_pixels_) {
1847     uint32 group_size = GLES2Util::ComputeImageGroupSize(format, type);
1848     pixels = reinterpret_cast<const int8*>(pixels) +
1849         unpack_skip_pixels_ * group_size;
1850   }
1851
1852   ScopedTransferBufferPtr buffer(temp_size, helper_, transfer_buffer_);
1853   TexSubImage2DImpl(
1854       target, level, xoffset, yoffset, width, height, format, type,
1855       unpadded_row_size, pixels, src_padded_row_size, GL_FALSE, &buffer,
1856       padded_row_size);
1857   CheckGLError();
1858 }
1859
1860 static GLint ComputeNumRowsThatFitInBuffer(
1861     GLsizeiptr padded_row_size, GLsizeiptr unpadded_row_size,
1862     unsigned int size) {
1863   DCHECK_GE(unpadded_row_size, 0);
1864   if (padded_row_size == 0) {
1865     return 1;
1866   }
1867   GLint num_rows = size / padded_row_size;
1868   return num_rows + (size - num_rows * padded_row_size) / unpadded_row_size;
1869 }
1870
1871 void GLES2Implementation::TexSubImage2DImpl(
1872     GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width,
1873     GLsizei height, GLenum format, GLenum type, uint32 unpadded_row_size,
1874     const void* pixels, uint32 pixels_padded_row_size, GLboolean internal,
1875     ScopedTransferBufferPtr* buffer, uint32 buffer_padded_row_size) {
1876   DCHECK(buffer);
1877   DCHECK_GE(level, 0);
1878   DCHECK_GT(height, 0);
1879   DCHECK_GT(width, 0);
1880
1881   const int8* source = reinterpret_cast<const int8*>(pixels);
1882   GLint original_yoffset = yoffset;
1883   // Transfer by rows.
1884   while (height) {
1885     unsigned int desired_size =
1886         buffer_padded_row_size * (height - 1) + unpadded_row_size;
1887     if (!buffer->valid() || buffer->size() == 0) {
1888       buffer->Reset(desired_size);
1889       if (!buffer->valid()) {
1890         return;
1891       }
1892     }
1893
1894     GLint num_rows = ComputeNumRowsThatFitInBuffer(
1895         buffer_padded_row_size, unpadded_row_size, buffer->size());
1896     num_rows = std::min(num_rows, height);
1897     CopyRectToBuffer(
1898         source, num_rows, unpadded_row_size, pixels_padded_row_size,
1899         unpack_flip_y_, buffer->address(), buffer_padded_row_size);
1900     GLint y = unpack_flip_y_ ? original_yoffset + height - num_rows : yoffset;
1901     helper_->TexSubImage2D(
1902         target, level, xoffset, y, width, num_rows, format, type,
1903         buffer->shm_id(), buffer->offset(), internal);
1904     buffer->Release();
1905     yoffset += num_rows;
1906     source += num_rows * pixels_padded_row_size;
1907     height -= num_rows;
1908   }
1909 }
1910
1911 bool GLES2Implementation::GetActiveAttribHelper(
1912     GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size,
1913     GLenum* type, char* name) {
1914   // Clear the bucket so if the command fails nothing will be in it.
1915   helper_->SetBucketSize(kResultBucketId, 0);
1916   typedef cmds::GetActiveAttrib::Result Result;
1917   Result* result = GetResultAs<Result*>();
1918   if (!result) {
1919     return false;
1920   }
1921   // Set as failed so if the command fails we'll recover.
1922   result->success = false;
1923   helper_->GetActiveAttrib(program, index, kResultBucketId,
1924                            GetResultShmId(), GetResultShmOffset());
1925   WaitForCmd();
1926   if (result->success) {
1927     if (size) {
1928       *size = result->size;
1929     }
1930     if (type) {
1931       *type = result->type;
1932     }
1933     if (length || name) {
1934       std::vector<int8> str;
1935       GetBucketContents(kResultBucketId, &str);
1936       GLsizei max_size = std::min(static_cast<size_t>(bufsize) - 1,
1937                                   std::max(static_cast<size_t>(0),
1938                                            str.size() - 1));
1939       if (length) {
1940         *length = max_size;
1941       }
1942       if (name && bufsize > 0) {
1943         memcpy(name, &str[0], max_size);
1944         name[max_size] = '\0';
1945       }
1946     }
1947   }
1948   return result->success != 0;
1949 }
1950
1951 void GLES2Implementation::GetActiveAttrib(
1952     GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size,
1953     GLenum* type, char* name) {
1954   GPU_CLIENT_SINGLE_THREAD_CHECK();
1955   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glGetActiveAttrib("
1956       << program << ", " << index << ", " << bufsize << ", "
1957       << static_cast<const void*>(length) << ", "
1958       << static_cast<const void*>(size) << ", "
1959       << static_cast<const void*>(type) << ", "
1960       << static_cast<const void*>(name) << ", ");
1961   if (bufsize < 0) {
1962     SetGLError(GL_INVALID_VALUE, "glGetActiveAttrib", "bufsize < 0");
1963     return;
1964   }
1965   TRACE_EVENT0("gpu", "GLES2::GetActiveAttrib");
1966   bool success = share_group_->program_info_manager()->GetActiveAttrib(
1967         this, program, index, bufsize, length, size, type, name);
1968   if (success) {
1969     if (size) {
1970       GPU_CLIENT_LOG("  size: " << *size);
1971     }
1972     if (type) {
1973       GPU_CLIENT_LOG("  type: " << GLES2Util::GetStringEnum(*type));
1974     }
1975     if (name) {
1976       GPU_CLIENT_LOG("  name: " << name);
1977     }
1978   }
1979   CheckGLError();
1980 }
1981
1982 bool GLES2Implementation::GetActiveUniformHelper(
1983     GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size,
1984     GLenum* type, char* name) {
1985   // Clear the bucket so if the command fails nothing will be in it.
1986   helper_->SetBucketSize(kResultBucketId, 0);
1987   typedef cmds::GetActiveUniform::Result Result;
1988   Result* result = GetResultAs<Result*>();
1989   if (!result) {
1990     return false;
1991   }
1992   // Set as failed so if the command fails we'll recover.
1993   result->success = false;
1994   helper_->GetActiveUniform(program, index, kResultBucketId,
1995                             GetResultShmId(), GetResultShmOffset());
1996   WaitForCmd();
1997   if (result->success) {
1998     if (size) {
1999       *size = result->size;
2000     }
2001     if (type) {
2002       *type = result->type;
2003     }
2004     if (length || name) {
2005       std::vector<int8> str;
2006       GetBucketContents(kResultBucketId, &str);
2007       GLsizei max_size = std::min(static_cast<size_t>(bufsize) - 1,
2008                                   std::max(static_cast<size_t>(0),
2009                                            str.size() - 1));
2010       if (length) {
2011         *length = max_size;
2012       }
2013       if (name && bufsize > 0) {
2014         memcpy(name, &str[0], max_size);
2015         name[max_size] = '\0';
2016       }
2017     }
2018   }
2019   return result->success != 0;
2020 }
2021
2022 void GLES2Implementation::GetActiveUniform(
2023     GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size,
2024     GLenum* type, char* name) {
2025   GPU_CLIENT_SINGLE_THREAD_CHECK();
2026   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glGetActiveUniform("
2027       << program << ", " << index << ", " << bufsize << ", "
2028       << static_cast<const void*>(length) << ", "
2029       << static_cast<const void*>(size) << ", "
2030       << static_cast<const void*>(type) << ", "
2031       << static_cast<const void*>(name) << ", ");
2032   if (bufsize < 0) {
2033     SetGLError(GL_INVALID_VALUE, "glGetActiveUniform", "bufsize < 0");
2034     return;
2035   }
2036   TRACE_EVENT0("gpu", "GLES2::GetActiveUniform");
2037   bool success = share_group_->program_info_manager()->GetActiveUniform(
2038       this, program, index, bufsize, length, size, type, name);
2039   if (success) {
2040     if (size) {
2041       GPU_CLIENT_LOG("  size: " << *size);
2042     }
2043     if (type) {
2044       GPU_CLIENT_LOG("  type: " << GLES2Util::GetStringEnum(*type));
2045     }
2046     if (name) {
2047       GPU_CLIENT_LOG("  name: " << name);
2048     }
2049   }
2050   CheckGLError();
2051 }
2052
2053 void GLES2Implementation::GetAttachedShaders(
2054     GLuint program, GLsizei maxcount, GLsizei* count, GLuint* shaders) {
2055   GPU_CLIENT_SINGLE_THREAD_CHECK();
2056   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glGetAttachedShaders("
2057       << program << ", " << maxcount << ", "
2058       << static_cast<const void*>(count) << ", "
2059       << static_cast<const void*>(shaders) << ", ");
2060   if (maxcount < 0) {
2061     SetGLError(GL_INVALID_VALUE, "glGetAttachedShaders", "maxcount < 0");
2062     return;
2063   }
2064   TRACE_EVENT0("gpu", "GLES2::GetAttachedShaders");
2065   typedef cmds::GetAttachedShaders::Result Result;
2066   uint32 size = Result::ComputeSize(maxcount);
2067   Result* result = static_cast<Result*>(transfer_buffer_->Alloc(size));
2068   if (!result) {
2069     return;
2070   }
2071   result->SetNumResults(0);
2072   helper_->GetAttachedShaders(
2073     program,
2074     transfer_buffer_->GetShmId(),
2075     transfer_buffer_->GetOffset(result),
2076     size);
2077   int32 token = helper_->InsertToken();
2078   WaitForCmd();
2079   if (count) {
2080     *count = result->GetNumResults();
2081   }
2082   result->CopyResult(shaders);
2083   GPU_CLIENT_LOG_CODE_BLOCK({
2084     for (int32 i = 0; i < result->GetNumResults(); ++i) {
2085       GPU_CLIENT_LOG("  " << i << ": " << result->GetData()[i]);
2086     }
2087   });
2088   transfer_buffer_->FreePendingToken(result, token);
2089   CheckGLError();
2090 }
2091
2092 void GLES2Implementation::GetShaderPrecisionFormat(
2093     GLenum shadertype, GLenum precisiontype, GLint* range, GLint* precision) {
2094   GPU_CLIENT_SINGLE_THREAD_CHECK();
2095   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glGetShaderPrecisionFormat("
2096       << GLES2Util::GetStringShaderType(shadertype) << ", "
2097       << GLES2Util::GetStringShaderPrecision(precisiontype) << ", "
2098       << static_cast<const void*>(range) << ", "
2099       << static_cast<const void*>(precision) << ", ");
2100   TRACE_EVENT0("gpu", "GLES2::GetShaderPrecisionFormat");
2101   typedef cmds::GetShaderPrecisionFormat::Result Result;
2102   Result* result = GetResultAs<Result*>();
2103   if (!result) {
2104     return;
2105   }
2106
2107   GLStaticState::ShaderPrecisionKey key(shadertype, precisiontype);
2108   GLStaticState::ShaderPrecisionMap::iterator i =
2109       static_state_.shader_precisions.find(key);
2110   if (i != static_state_.shader_precisions.end()) {
2111     *result = i->second;
2112   } else {
2113     result->success = false;
2114     helper_->GetShaderPrecisionFormat(
2115         shadertype, precisiontype, GetResultShmId(), GetResultShmOffset());
2116     WaitForCmd();
2117     if (result->success)
2118       static_state_.shader_precisions[key] = *result;
2119   }
2120
2121   if (result->success) {
2122     if (range) {
2123       range[0] = result->min_range;
2124       range[1] = result->max_range;
2125       GPU_CLIENT_LOG("  min_range: " << range[0]);
2126       GPU_CLIENT_LOG("  min_range: " << range[1]);
2127     }
2128     if (precision) {
2129       precision[0] = result->precision;
2130       GPU_CLIENT_LOG("  min_range: " << precision[0]);
2131     }
2132   }
2133   CheckGLError();
2134 }
2135
2136 const GLubyte* GLES2Implementation::GetStringHelper(GLenum name) {
2137   const char* result = NULL;
2138   // Clears the bucket so if the command fails nothing will be in it.
2139   helper_->SetBucketSize(kResultBucketId, 0);
2140   helper_->GetString(name, kResultBucketId);
2141   std::string str;
2142   if (GetBucketAsString(kResultBucketId, &str)) {
2143     // Adds extensions implemented on client side only.
2144     switch (name) {
2145       case GL_EXTENSIONS:
2146         str += std::string(str.empty() ? "" : " ") +
2147             "GL_CHROMIUM_flipy "
2148             "GL_EXT_unpack_subimage";
2149         if (capabilities_.map_image) {
2150           // The first space character is intentional.
2151           str += " GL_CHROMIUM_map_image";
2152         }
2153         break;
2154       default:
2155         break;
2156     }
2157
2158     // Because of WebGL the extensions can change. We have to cache each unique
2159     // result since we don't know when the client will stop referring to a
2160     // previous one it queries.
2161     GLStringMap::iterator it = gl_strings_.find(name);
2162     if (it == gl_strings_.end()) {
2163       std::set<std::string> strings;
2164       std::pair<GLStringMap::iterator, bool> insert_result =
2165           gl_strings_.insert(std::make_pair(name, strings));
2166       DCHECK(insert_result.second);
2167       it = insert_result.first;
2168     }
2169     std::set<std::string>& string_set = it->second;
2170     std::set<std::string>::const_iterator sit = string_set.find(str);
2171     if (sit != string_set.end()) {
2172       result = sit->c_str();
2173     } else {
2174       std::pair<std::set<std::string>::const_iterator, bool> insert_result =
2175           string_set.insert(str);
2176       DCHECK(insert_result.second);
2177       result = insert_result.first->c_str();
2178     }
2179   }
2180   return reinterpret_cast<const GLubyte*>(result);
2181 }
2182
2183 const GLubyte* GLES2Implementation::GetString(GLenum name) {
2184   GPU_CLIENT_SINGLE_THREAD_CHECK();
2185   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glGetString("
2186       << GLES2Util::GetStringStringType(name) << ")");
2187   TRACE_EVENT0("gpu", "GLES2::GetString");
2188   const GLubyte* result = GetStringHelper(name);
2189   GPU_CLIENT_LOG("  returned " << reinterpret_cast<const char*>(result));
2190   CheckGLError();
2191   return result;
2192 }
2193
2194 void GLES2Implementation::GetUniformfv(
2195     GLuint program, GLint location, GLfloat* params) {
2196   GPU_CLIENT_SINGLE_THREAD_CHECK();
2197   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glGetUniformfv("
2198       << program << ", " << location << ", "
2199       << static_cast<const void*>(params) << ")");
2200   TRACE_EVENT0("gpu", "GLES2::GetUniformfv");
2201   typedef cmds::GetUniformfv::Result Result;
2202   Result* result = GetResultAs<Result*>();
2203   if (!result) {
2204     return;
2205   }
2206   result->SetNumResults(0);
2207   helper_->GetUniformfv(
2208       program, location, GetResultShmId(), GetResultShmOffset());
2209   WaitForCmd();
2210   result->CopyResult(params);
2211   GPU_CLIENT_LOG_CODE_BLOCK({
2212     for (int32 i = 0; i < result->GetNumResults(); ++i) {
2213       GPU_CLIENT_LOG("  " << i << ": " << result->GetData()[i]);
2214     }
2215   });
2216   CheckGLError();
2217 }
2218
2219 void GLES2Implementation::GetUniformiv(
2220     GLuint program, GLint location, GLint* params) {
2221   GPU_CLIENT_SINGLE_THREAD_CHECK();
2222   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glGetUniformiv("
2223       << program << ", " << location << ", "
2224       << static_cast<const void*>(params) << ")");
2225   TRACE_EVENT0("gpu", "GLES2::GetUniformiv");
2226   typedef cmds::GetUniformiv::Result Result;
2227   Result* result = GetResultAs<Result*>();
2228   if (!result) {
2229     return;
2230   }
2231   result->SetNumResults(0);
2232   helper_->GetUniformiv(
2233       program, location, GetResultShmId(), GetResultShmOffset());
2234   WaitForCmd();
2235   GetResultAs<cmds::GetUniformfv::Result*>()->CopyResult(params);
2236   GPU_CLIENT_LOG_CODE_BLOCK({
2237     for (int32 i = 0; i < result->GetNumResults(); ++i) {
2238       GPU_CLIENT_LOG("  " << i << ": " << result->GetData()[i]);
2239     }
2240   });
2241   CheckGLError();
2242 }
2243
2244 void GLES2Implementation::ReadPixels(
2245     GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format,
2246     GLenum type, void* pixels) {
2247   GPU_CLIENT_SINGLE_THREAD_CHECK();
2248   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glReadPixels("
2249       << xoffset << ", " << yoffset << ", "
2250       << width << ", " << height << ", "
2251       << GLES2Util::GetStringReadPixelFormat(format) << ", "
2252       << GLES2Util::GetStringPixelType(type) << ", "
2253       << static_cast<const void*>(pixels) << ")");
2254   if (width < 0 || height < 0) {
2255     SetGLError(GL_INVALID_VALUE, "glReadPixels", "dimensions < 0");
2256     return;
2257   }
2258   if (width == 0 || height == 0) {
2259     return;
2260   }
2261
2262   // glReadPixel pads the size of each row of pixels by an amount specified by
2263   // glPixelStorei. So, we have to take that into account both in the fact that
2264   // the pixels returned from the ReadPixel command will include that padding
2265   // and that when we copy the results to the user's buffer we need to not
2266   // write those padding bytes but leave them as they are.
2267
2268   TRACE_EVENT0("gpu", "GLES2::ReadPixels");
2269   typedef cmds::ReadPixels::Result Result;
2270
2271   int8* dest = reinterpret_cast<int8*>(pixels);
2272   uint32 temp_size;
2273   uint32 unpadded_row_size;
2274   uint32 padded_row_size;
2275   if (!GLES2Util::ComputeImageDataSizes(
2276       width, 2, format, type, pack_alignment_, &temp_size, &unpadded_row_size,
2277       &padded_row_size)) {
2278     SetGLError(GL_INVALID_VALUE, "glReadPixels", "size too large.");
2279     return;
2280   }
2281
2282   if (bound_pixel_pack_transfer_buffer_id_) {
2283     GLuint offset = ToGLuint(pixels);
2284     BufferTracker::Buffer* buffer = GetBoundPixelUnpackTransferBufferIfValid(
2285         bound_pixel_pack_transfer_buffer_id_,
2286         "glReadPixels", offset, padded_row_size * height);
2287     if (buffer && buffer->shm_id() != -1) {
2288       helper_->ReadPixels(xoffset, yoffset, width, height, format, type,
2289                           buffer->shm_id(), buffer->shm_offset(),
2290                           0, 0, true);
2291       CheckGLError();
2292     }
2293     return;
2294   }
2295
2296   if (!pixels) {
2297     SetGLError(GL_INVALID_OPERATION, "glReadPixels", "pixels = NULL");
2298     return;
2299   }
2300
2301   // Transfer by rows.
2302   // The max rows we can transfer.
2303   while (height) {
2304     GLsizei desired_size = padded_row_size * height - 1 + unpadded_row_size;
2305     ScopedTransferBufferPtr buffer(desired_size, helper_, transfer_buffer_);
2306     if (!buffer.valid()) {
2307       return;
2308     }
2309     GLint num_rows = ComputeNumRowsThatFitInBuffer(
2310         padded_row_size, unpadded_row_size, buffer.size());
2311     num_rows = std::min(num_rows, height);
2312     // NOTE: We must look up the address of the result area AFTER allocation
2313     // of the transfer buffer since the transfer buffer may be reallocated.
2314     Result* result = GetResultAs<Result*>();
2315     if (!result) {
2316       return;
2317     }
2318     *result = 0;  // mark as failed.
2319     helper_->ReadPixels(
2320         xoffset, yoffset, width, num_rows, format, type,
2321         buffer.shm_id(), buffer.offset(),
2322         GetResultShmId(), GetResultShmOffset(),
2323         false);
2324     WaitForCmd();
2325     if (*result != 0) {
2326       // when doing a y-flip we have to iterate through top-to-bottom chunks
2327       // of the dst. The service side handles reversing the rows within a
2328       // chunk.
2329       int8* rows_dst;
2330       if (pack_reverse_row_order_) {
2331           rows_dst = dest + (height - num_rows) * padded_row_size;
2332       } else {
2333           rows_dst = dest;
2334       }
2335       // We have to copy 1 row at a time to avoid writing pad bytes.
2336       const int8* src = static_cast<const int8*>(buffer.address());
2337       for (GLint yy = 0; yy < num_rows; ++yy) {
2338         memcpy(rows_dst, src, unpadded_row_size);
2339         rows_dst += padded_row_size;
2340         src += padded_row_size;
2341       }
2342       if (!pack_reverse_row_order_) {
2343         dest = rows_dst;
2344       }
2345     }
2346     // If it was not marked as successful exit.
2347     if (*result == 0) {
2348       return;
2349     }
2350     yoffset += num_rows;
2351     height -= num_rows;
2352   }
2353   CheckGLError();
2354 }
2355
2356 void GLES2Implementation::ActiveTexture(GLenum texture) {
2357   GPU_CLIENT_SINGLE_THREAD_CHECK();
2358   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glActiveTexture("
2359       << GLES2Util::GetStringEnum(texture) << ")");
2360   GLuint texture_index = texture - GL_TEXTURE0;
2361   if (texture_index >= static_cast<GLuint>(
2362       static_state_.int_state.max_combined_texture_image_units)) {
2363     SetGLErrorInvalidEnum(
2364         "glActiveTexture", texture, "texture");
2365     return;
2366   }
2367
2368   active_texture_unit_ = texture_index;
2369   helper_->ActiveTexture(texture);
2370   CheckGLError();
2371 }
2372
2373 void GLES2Implementation::GenBuffersHelper(
2374     GLsizei /* n */, const GLuint* /* buffers */) {
2375 }
2376
2377 void GLES2Implementation::GenFramebuffersHelper(
2378     GLsizei /* n */, const GLuint* /* framebuffers */) {
2379 }
2380
2381 void GLES2Implementation::GenRenderbuffersHelper(
2382     GLsizei /* n */, const GLuint* /* renderbuffers */) {
2383 }
2384
2385 void GLES2Implementation::GenTexturesHelper(
2386     GLsizei /* n */, const GLuint* /* textures */) {
2387 }
2388
2389 void GLES2Implementation::GenVertexArraysOESHelper(
2390     GLsizei n, const GLuint* arrays) {
2391   vertex_array_object_manager_->GenVertexArrays(n, arrays);
2392 }
2393
2394 void GLES2Implementation::GenQueriesEXTHelper(
2395     GLsizei /* n */, const GLuint* /* queries */) {
2396 }
2397
2398 // NOTE #1: On old versions of OpenGL, calling glBindXXX with an unused id
2399 // generates a new resource. On newer versions of OpenGL they don't. The code
2400 // related to binding below will need to change if we switch to the new OpenGL
2401 // model. Specifically it assumes a bind will succeed which is always true in
2402 // the old model but possibly not true in the new model if another context has
2403 // deleted the resource.
2404
2405 bool GLES2Implementation::BindBufferHelper(
2406     GLenum target, GLuint buffer) {
2407   // TODO(gman): See note #1 above.
2408   bool changed = false;
2409   switch (target) {
2410     case GL_ARRAY_BUFFER:
2411       if (bound_array_buffer_id_ != buffer) {
2412         bound_array_buffer_id_ = buffer;
2413         changed = true;
2414       }
2415       break;
2416     case GL_ELEMENT_ARRAY_BUFFER:
2417       changed = vertex_array_object_manager_->BindElementArray(buffer);
2418       break;
2419     case GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM:
2420       bound_pixel_pack_transfer_buffer_id_ = buffer;
2421       break;
2422     case GL_PIXEL_UNPACK_TRANSFER_BUFFER_CHROMIUM:
2423       bound_pixel_unpack_transfer_buffer_id_ = buffer;
2424       break;
2425     default:
2426       changed = true;
2427       break;
2428   }
2429   // TODO(gman): There's a bug here. If the target is invalid the ID will not be
2430   // used even though it's marked it as used here.
2431   GetIdHandler(id_namespaces::kBuffers)->MarkAsUsedForBind(buffer);
2432   return changed;
2433 }
2434
2435 bool GLES2Implementation::BindFramebufferHelper(
2436     GLenum target, GLuint framebuffer) {
2437   // TODO(gman): See note #1 above.
2438   bool changed = false;
2439   switch (target) {
2440     case GL_FRAMEBUFFER:
2441       if (bound_framebuffer_ != framebuffer ||
2442           bound_read_framebuffer_ != framebuffer) {
2443         bound_framebuffer_ = framebuffer;
2444         bound_read_framebuffer_ = framebuffer;
2445         changed = true;
2446       }
2447       break;
2448     case GL_READ_FRAMEBUFFER:
2449       if (!IsChromiumFramebufferMultisampleAvailable()) {
2450         SetGLErrorInvalidEnum("glBindFramebuffer", target, "target");
2451         return false;
2452       }
2453       if (bound_read_framebuffer_ != framebuffer) {
2454         bound_read_framebuffer_ = framebuffer;
2455         changed = true;
2456       }
2457       break;
2458     case GL_DRAW_FRAMEBUFFER:
2459       if (!IsChromiumFramebufferMultisampleAvailable()) {
2460         SetGLErrorInvalidEnum("glBindFramebuffer", target, "target");
2461         return false;
2462       }
2463       if (bound_framebuffer_ != framebuffer) {
2464         bound_framebuffer_ = framebuffer;
2465         changed = true;
2466       }
2467       break;
2468     default:
2469       SetGLErrorInvalidEnum("glBindFramebuffer", target, "target");
2470       return false;
2471   }
2472   GetIdHandler(id_namespaces::kFramebuffers)->MarkAsUsedForBind(framebuffer);
2473   return changed;
2474 }
2475
2476 bool GLES2Implementation::BindRenderbufferHelper(
2477     GLenum target, GLuint renderbuffer) {
2478   // TODO(gman): See note #1 above.
2479   bool changed = false;
2480   switch (target) {
2481     case GL_RENDERBUFFER:
2482       if (bound_renderbuffer_ != renderbuffer) {
2483         bound_renderbuffer_ = renderbuffer;
2484         changed = true;
2485       }
2486       break;
2487     default:
2488       changed = true;
2489       break;
2490   }
2491   // TODO(gman): There's a bug here. If the target is invalid the ID will not be
2492   // used even though it's marked it as used here.
2493   GetIdHandler(id_namespaces::kRenderbuffers)->MarkAsUsedForBind(renderbuffer);
2494   return changed;
2495 }
2496
2497 bool GLES2Implementation::BindTextureHelper(GLenum target, GLuint texture) {
2498   // TODO(gman): See note #1 above.
2499   // TODO(gman): Change this to false once we figure out why it's failing
2500   //     on daisy.
2501   bool changed = true;
2502   TextureUnit& unit = texture_units_[active_texture_unit_];
2503   switch (target) {
2504     case GL_TEXTURE_2D:
2505       if (unit.bound_texture_2d != texture) {
2506         unit.bound_texture_2d = texture;
2507         changed = true;
2508       }
2509       break;
2510     case GL_TEXTURE_CUBE_MAP:
2511       if (unit.bound_texture_cube_map != texture) {
2512         unit.bound_texture_cube_map = texture;
2513         changed = true;
2514       }
2515       break;
2516     case GL_TEXTURE_EXTERNAL_OES:
2517       if (unit.bound_texture_external_oes != texture) {
2518         unit.bound_texture_external_oes = texture;
2519         changed = true;
2520       }
2521       break;
2522     default:
2523       changed = true;
2524       break;
2525   }
2526   // TODO(gman): There's a bug here. If the target is invalid the ID will not be
2527   // used. even though it's marked it as used here.
2528   GetIdHandler(id_namespaces::kTextures)->MarkAsUsedForBind(texture);
2529   return changed;
2530 }
2531
2532 bool GLES2Implementation::BindVertexArrayHelper(GLuint array) {
2533   // TODO(gman): See note #1 above.
2534   bool changed = false;
2535   if (!vertex_array_object_manager_->BindVertexArray(array, &changed)) {
2536     SetGLError(
2537         GL_INVALID_OPERATION, "glBindVertexArrayOES",
2538         "id was not generated with glGenVertexArrayOES");
2539   }
2540   // Unlike other BindXXXHelpers we don't call MarkAsUsedForBind
2541   // because unlike other resources VertexArrayObject ids must
2542   // be generated by GenVertexArrays. A random id to Bind will not
2543   // generate a new object.
2544   return changed;
2545 }
2546
2547 bool GLES2Implementation::IsBufferReservedId(GLuint id) {
2548   return vertex_array_object_manager_->IsReservedId(id);
2549 }
2550
2551 void GLES2Implementation::DeleteBuffersHelper(
2552     GLsizei n, const GLuint* buffers) {
2553   if (!GetIdHandler(id_namespaces::kBuffers)->FreeIds(
2554       this, n, buffers, &GLES2Implementation::DeleteBuffersStub)) {
2555     SetGLError(
2556         GL_INVALID_VALUE,
2557         "glDeleteBuffers", "id not created by this context.");
2558     return;
2559   }
2560   for (GLsizei ii = 0; ii < n; ++ii) {
2561     if (buffers[ii] == bound_array_buffer_id_) {
2562       bound_array_buffer_id_ = 0;
2563     }
2564     vertex_array_object_manager_->UnbindBuffer(buffers[ii]);
2565     BufferTracker::Buffer* buffer = buffer_tracker_->GetBuffer(buffers[ii]);
2566     if (buffer) {
2567       // Free buffer memory, pending the passage of a token.
2568       buffer_tracker_->FreePendingToken(buffer, helper_->InsertToken());
2569       // Remove buffer.
2570       buffer_tracker_->RemoveBuffer(buffers[ii]);
2571     }
2572     if (buffers[ii] == bound_pixel_unpack_transfer_buffer_id_) {
2573       bound_pixel_unpack_transfer_buffer_id_ = 0;
2574     }
2575   }
2576 }
2577
2578 void GLES2Implementation::DeleteBuffersStub(
2579     GLsizei n, const GLuint* buffers) {
2580   helper_->DeleteBuffersImmediate(n, buffers);
2581 }
2582
2583
2584 void GLES2Implementation::DeleteFramebuffersHelper(
2585     GLsizei n, const GLuint* framebuffers) {
2586   if (!GetIdHandler(id_namespaces::kFramebuffers)->FreeIds(
2587       this, n, framebuffers, &GLES2Implementation::DeleteFramebuffersStub)) {
2588     SetGLError(
2589         GL_INVALID_VALUE,
2590         "glDeleteFramebuffers", "id not created by this context.");
2591     return;
2592   }
2593   for (GLsizei ii = 0; ii < n; ++ii) {
2594     if (framebuffers[ii] == bound_framebuffer_) {
2595       bound_framebuffer_ = 0;
2596     }
2597     if (framebuffers[ii] == bound_read_framebuffer_) {
2598       bound_read_framebuffer_ = 0;
2599     }
2600   }
2601 }
2602
2603 void GLES2Implementation::DeleteFramebuffersStub(
2604     GLsizei n, const GLuint* framebuffers) {
2605   helper_->DeleteFramebuffersImmediate(n, framebuffers);
2606 }
2607
2608 void GLES2Implementation::DeleteRenderbuffersHelper(
2609     GLsizei n, const GLuint* renderbuffers) {
2610   if (!GetIdHandler(id_namespaces::kRenderbuffers)->FreeIds(
2611       this, n, renderbuffers, &GLES2Implementation::DeleteRenderbuffersStub)) {
2612     SetGLError(
2613         GL_INVALID_VALUE,
2614         "glDeleteRenderbuffers", "id not created by this context.");
2615     return;
2616   }
2617   for (GLsizei ii = 0; ii < n; ++ii) {
2618     if (renderbuffers[ii] == bound_renderbuffer_) {
2619       bound_renderbuffer_ = 0;
2620     }
2621   }
2622 }
2623
2624 void GLES2Implementation::DeleteRenderbuffersStub(
2625     GLsizei n, const GLuint* renderbuffers) {
2626   helper_->DeleteRenderbuffersImmediate(n, renderbuffers);
2627 }
2628
2629 void GLES2Implementation::DeleteTexturesHelper(
2630     GLsizei n, const GLuint* textures) {
2631   if (!GetIdHandler(id_namespaces::kTextures)->FreeIds(
2632       this, n, textures, &GLES2Implementation::DeleteTexturesStub)) {
2633     SetGLError(
2634         GL_INVALID_VALUE,
2635         "glDeleteTextures", "id not created by this context.");
2636     return;
2637   }
2638   for (GLsizei ii = 0; ii < n; ++ii) {
2639     for (GLint tt = 0;
2640          tt < static_state_.int_state.max_combined_texture_image_units;
2641          ++tt) {
2642       TextureUnit& unit = texture_units_[tt];
2643       if (textures[ii] == unit.bound_texture_2d) {
2644         unit.bound_texture_2d = 0;
2645       }
2646       if (textures[ii] == unit.bound_texture_cube_map) {
2647         unit.bound_texture_cube_map = 0;
2648       }
2649       if (textures[ii] == unit.bound_texture_external_oes) {
2650         unit.bound_texture_external_oes = 0;
2651       }
2652     }
2653   }
2654 }
2655
2656 void GLES2Implementation::DeleteVertexArraysOESHelper(
2657     GLsizei n, const GLuint* arrays) {
2658   vertex_array_object_manager_->DeleteVertexArrays(n, arrays);
2659   if (!GetIdHandler(id_namespaces::kVertexArrays)->FreeIds(
2660       this, n, arrays, &GLES2Implementation::DeleteVertexArraysOESStub)) {
2661     SetGLError(
2662         GL_INVALID_VALUE,
2663         "glDeleteVertexArraysOES", "id not created by this context.");
2664     return;
2665   }
2666 }
2667
2668 void GLES2Implementation::DeleteVertexArraysOESStub(
2669     GLsizei n, const GLuint* arrays) {
2670   helper_->DeleteVertexArraysOESImmediate(n, arrays);
2671 }
2672
2673 void GLES2Implementation::DeleteTexturesStub(
2674     GLsizei n, const GLuint* textures) {
2675   helper_->DeleteTexturesImmediate(n, textures);
2676 }
2677
2678 void GLES2Implementation::DisableVertexAttribArray(GLuint index) {
2679   GPU_CLIENT_SINGLE_THREAD_CHECK();
2680   GPU_CLIENT_LOG(
2681       "[" << GetLogPrefix() << "] glDisableVertexAttribArray(" << index << ")");
2682   vertex_array_object_manager_->SetAttribEnable(index, false);
2683   helper_->DisableVertexAttribArray(index);
2684   CheckGLError();
2685 }
2686
2687 void GLES2Implementation::EnableVertexAttribArray(GLuint index) {
2688   GPU_CLIENT_SINGLE_THREAD_CHECK();
2689   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glEnableVertexAttribArray("
2690       << index << ")");
2691   vertex_array_object_manager_->SetAttribEnable(index, true);
2692   helper_->EnableVertexAttribArray(index);
2693   CheckGLError();
2694 }
2695
2696 void GLES2Implementation::DrawArrays(GLenum mode, GLint first, GLsizei count) {
2697   GPU_CLIENT_SINGLE_THREAD_CHECK();
2698   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glDrawArrays("
2699       << GLES2Util::GetStringDrawMode(mode) << ", "
2700       << first << ", " << count << ")");
2701   if (count < 0) {
2702     SetGLError(GL_INVALID_VALUE, "glDrawArrays", "count < 0");
2703     return;
2704   }
2705   bool simulated = false;
2706   if (!vertex_array_object_manager_->SetupSimulatedClientSideBuffers(
2707       "glDrawArrays", this, helper_, first + count, 0, &simulated)) {
2708     return;
2709   }
2710   helper_->DrawArrays(mode, first, count);
2711   RestoreArrayBuffer(simulated);
2712   CheckGLError();
2713 }
2714
2715 void GLES2Implementation::GetVertexAttribfv(
2716     GLuint index, GLenum pname, GLfloat* params) {
2717   GPU_CLIENT_SINGLE_THREAD_CHECK();
2718   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glGetVertexAttribfv("
2719       << index << ", "
2720       << GLES2Util::GetStringVertexAttribute(pname) << ", "
2721       << static_cast<const void*>(params) << ")");
2722   uint32 value = 0;
2723   if (vertex_array_object_manager_->GetVertexAttrib(index, pname, &value)) {
2724     *params = static_cast<float>(value);
2725     return;
2726   }
2727   TRACE_EVENT0("gpu", "GLES2::GetVertexAttribfv");
2728   typedef cmds::GetVertexAttribfv::Result Result;
2729   Result* result = GetResultAs<Result*>();
2730   if (!result) {
2731     return;
2732   }
2733   result->SetNumResults(0);
2734   helper_->GetVertexAttribfv(
2735       index, pname, GetResultShmId(), GetResultShmOffset());
2736   WaitForCmd();
2737   result->CopyResult(params);
2738   GPU_CLIENT_LOG_CODE_BLOCK({
2739     for (int32 i = 0; i < result->GetNumResults(); ++i) {
2740       GPU_CLIENT_LOG("  " << i << ": " << result->GetData()[i]);
2741     }
2742   });
2743   CheckGLError();
2744 }
2745
2746 void GLES2Implementation::GetVertexAttribiv(
2747     GLuint index, GLenum pname, GLint* params) {
2748   GPU_CLIENT_SINGLE_THREAD_CHECK();
2749   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glGetVertexAttribiv("
2750       << index << ", "
2751       << GLES2Util::GetStringVertexAttribute(pname) << ", "
2752       << static_cast<const void*>(params) << ")");
2753   uint32 value = 0;
2754   if (vertex_array_object_manager_->GetVertexAttrib(index, pname, &value)) {
2755     *params = value;
2756     return;
2757   }
2758   TRACE_EVENT0("gpu", "GLES2::GetVertexAttribiv");
2759   typedef cmds::GetVertexAttribiv::Result Result;
2760   Result* result = GetResultAs<Result*>();
2761   if (!result) {
2762     return;
2763   }
2764   result->SetNumResults(0);
2765   helper_->GetVertexAttribiv(
2766       index, pname, GetResultShmId(), GetResultShmOffset());
2767   WaitForCmd();
2768   result->CopyResult(params);
2769   GPU_CLIENT_LOG_CODE_BLOCK({
2770     for (int32 i = 0; i < result->GetNumResults(); ++i) {
2771       GPU_CLIENT_LOG("  " << i << ": " << result->GetData()[i]);
2772     }
2773   });
2774   CheckGLError();
2775 }
2776
2777 void GLES2Implementation::Swap() {
2778   SwapBuffers();
2779   gpu_control_->Echo(
2780       base::Bind(&GLES2Implementation::OnSwapBuffersComplete,
2781                  weak_ptr_factory_.GetWeakPtr()));
2782 }
2783
2784 void GLES2Implementation::PartialSwapBuffers(const gfx::Rect& sub_buffer) {
2785   PostSubBufferCHROMIUM(sub_buffer.x(),
2786                         sub_buffer.y(),
2787                         sub_buffer.width(),
2788                         sub_buffer.height());
2789   gpu_control_->Echo(base::Bind(&GLES2Implementation::OnSwapBuffersComplete,
2790                                 weak_ptr_factory_.GetWeakPtr()));
2791 }
2792
2793 void GLES2Implementation::SetSwapBuffersCompleteCallback(
2794       const base::Closure& swap_buffers_complete_callback) {
2795   swap_buffers_complete_callback_ = swap_buffers_complete_callback;
2796 }
2797
2798 void GLES2Implementation::OnSwapBuffersComplete() {
2799   if (!swap_buffers_complete_callback_.is_null())
2800     swap_buffers_complete_callback_.Run();
2801 }
2802
2803 GLboolean GLES2Implementation::EnableFeatureCHROMIUM(
2804     const char* feature) {
2805   GPU_CLIENT_SINGLE_THREAD_CHECK();
2806   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glEnableFeatureCHROMIUM("
2807                  << feature << ")");
2808   TRACE_EVENT0("gpu", "GLES2::EnableFeatureCHROMIUM");
2809   typedef cmds::EnableFeatureCHROMIUM::Result Result;
2810   Result* result = GetResultAs<Result*>();
2811   if (!result) {
2812     return false;
2813   }
2814   *result = 0;
2815   SetBucketAsCString(kResultBucketId, feature);
2816   helper_->EnableFeatureCHROMIUM(
2817       kResultBucketId, GetResultShmId(), GetResultShmOffset());
2818   WaitForCmd();
2819   helper_->SetBucketSize(kResultBucketId, 0);
2820   GPU_CLIENT_LOG("   returned " << GLES2Util::GetStringBool(*result));
2821   return *result;
2822 }
2823
2824 void* GLES2Implementation::MapBufferSubDataCHROMIUM(
2825     GLuint target, GLintptr offset, GLsizeiptr size, GLenum access) {
2826   GPU_CLIENT_SINGLE_THREAD_CHECK();
2827   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glMapBufferSubDataCHROMIUM("
2828       << target << ", " << offset << ", " << size << ", "
2829       << GLES2Util::GetStringEnum(access) << ")");
2830   // NOTE: target is NOT checked because the service will check it
2831   // and we don't know what targets are valid.
2832   if (access != GL_WRITE_ONLY) {
2833     SetGLErrorInvalidEnum(
2834         "glMapBufferSubDataCHROMIUM", access, "access");
2835     return NULL;
2836   }
2837   if (offset < 0 || size < 0) {
2838     SetGLError(GL_INVALID_VALUE, "glMapBufferSubDataCHROMIUM", "bad range");
2839     return NULL;
2840   }
2841   int32 shm_id;
2842   unsigned int shm_offset;
2843   void* mem = mapped_memory_->Alloc(size, &shm_id, &shm_offset);
2844   if (!mem) {
2845     SetGLError(GL_OUT_OF_MEMORY, "glMapBufferSubDataCHROMIUM", "out of memory");
2846     return NULL;
2847   }
2848
2849   std::pair<MappedBufferMap::iterator, bool> result =
2850      mapped_buffers_.insert(std::make_pair(
2851          mem,
2852          MappedBuffer(
2853              access, shm_id, mem, shm_offset, target, offset, size)));
2854   DCHECK(result.second);
2855   GPU_CLIENT_LOG("  returned " << mem);
2856   return mem;
2857 }
2858
2859 void GLES2Implementation::UnmapBufferSubDataCHROMIUM(const void* mem) {
2860   GPU_CLIENT_SINGLE_THREAD_CHECK();
2861   GPU_CLIENT_LOG(
2862       "[" << GetLogPrefix() << "] glUnmapBufferSubDataCHROMIUM(" << mem << ")");
2863   MappedBufferMap::iterator it = mapped_buffers_.find(mem);
2864   if (it == mapped_buffers_.end()) {
2865     SetGLError(
2866         GL_INVALID_VALUE, "UnmapBufferSubDataCHROMIUM", "buffer not mapped");
2867     return;
2868   }
2869   const MappedBuffer& mb = it->second;
2870   helper_->BufferSubData(
2871       mb.target, mb.offset, mb.size, mb.shm_id, mb.shm_offset);
2872   mapped_memory_->FreePendingToken(mb.shm_memory, helper_->InsertToken());
2873   mapped_buffers_.erase(it);
2874   CheckGLError();
2875 }
2876
2877 void* GLES2Implementation::MapTexSubImage2DCHROMIUM(
2878      GLenum target,
2879      GLint level,
2880      GLint xoffset,
2881      GLint yoffset,
2882      GLsizei width,
2883      GLsizei height,
2884      GLenum format,
2885      GLenum type,
2886      GLenum access) {
2887   GPU_CLIENT_SINGLE_THREAD_CHECK();
2888   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glMapTexSubImage2DCHROMIUM("
2889       << target << ", " << level << ", "
2890       << xoffset << ", " << yoffset << ", "
2891       << width << ", " << height << ", "
2892       << GLES2Util::GetStringTextureFormat(format) << ", "
2893       << GLES2Util::GetStringPixelType(type) << ", "
2894       << GLES2Util::GetStringEnum(access) << ")");
2895   if (access != GL_WRITE_ONLY) {
2896     SetGLErrorInvalidEnum(
2897         "glMapTexSubImage2DCHROMIUM", access, "access");
2898     return NULL;
2899   }
2900   // NOTE: target is NOT checked because the service will check it
2901   // and we don't know what targets are valid.
2902   if (level < 0 || xoffset < 0 || yoffset < 0 || width < 0 || height < 0) {
2903     SetGLError(
2904         GL_INVALID_VALUE, "glMapTexSubImage2DCHROMIUM", "bad dimensions");
2905     return NULL;
2906   }
2907   uint32 size;
2908   if (!GLES2Util::ComputeImageDataSizes(
2909       width, height, format, type, unpack_alignment_, &size, NULL, NULL)) {
2910     SetGLError(
2911         GL_INVALID_VALUE, "glMapTexSubImage2DCHROMIUM", "image size too large");
2912     return NULL;
2913   }
2914   int32 shm_id;
2915   unsigned int shm_offset;
2916   void* mem = mapped_memory_->Alloc(size, &shm_id, &shm_offset);
2917   if (!mem) {
2918     SetGLError(GL_OUT_OF_MEMORY, "glMapTexSubImage2DCHROMIUM", "out of memory");
2919     return NULL;
2920   }
2921
2922   std::pair<MappedTextureMap::iterator, bool> result =
2923      mapped_textures_.insert(std::make_pair(
2924          mem,
2925          MappedTexture(
2926              access, shm_id, mem, shm_offset,
2927              target, level, xoffset, yoffset, width, height, format, type)));
2928   DCHECK(result.second);
2929   GPU_CLIENT_LOG("  returned " << mem);
2930   return mem;
2931 }
2932
2933 void GLES2Implementation::UnmapTexSubImage2DCHROMIUM(const void* mem) {
2934   GPU_CLIENT_SINGLE_THREAD_CHECK();
2935   GPU_CLIENT_LOG(
2936       "[" << GetLogPrefix() << "] glUnmapTexSubImage2DCHROMIUM(" << mem << ")");
2937   MappedTextureMap::iterator it = mapped_textures_.find(mem);
2938   if (it == mapped_textures_.end()) {
2939     SetGLError(
2940         GL_INVALID_VALUE, "UnmapTexSubImage2DCHROMIUM", "texture not mapped");
2941     return;
2942   }
2943   const MappedTexture& mt = it->second;
2944   helper_->TexSubImage2D(
2945       mt.target, mt.level, mt.xoffset, mt.yoffset, mt.width, mt.height,
2946       mt.format, mt.type, mt.shm_id, mt.shm_offset, GL_FALSE);
2947   mapped_memory_->FreePendingToken(mt.shm_memory, helper_->InsertToken());
2948   mapped_textures_.erase(it);
2949   CheckGLError();
2950 }
2951
2952 void GLES2Implementation::ResizeCHROMIUM(GLuint width, GLuint height,
2953                                          float scale_factor) {
2954   GPU_CLIENT_SINGLE_THREAD_CHECK();
2955   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glResizeCHROMIUM("
2956                  << width << ", " << height << ", " << scale_factor << ")");
2957   helper_->ResizeCHROMIUM(width, height, scale_factor);
2958   CheckGLError();
2959 }
2960
2961 const GLchar* GLES2Implementation::GetRequestableExtensionsCHROMIUM() {
2962   GPU_CLIENT_SINGLE_THREAD_CHECK();
2963   GPU_CLIENT_LOG("[" << GetLogPrefix()
2964       << "] glGetRequestableExtensionsCHROMIUM()");
2965   TRACE_EVENT0("gpu",
2966                "GLES2Implementation::GetRequestableExtensionsCHROMIUM()");
2967   const char* result = NULL;
2968   // Clear the bucket so if the command fails nothing will be in it.
2969   helper_->SetBucketSize(kResultBucketId, 0);
2970   helper_->GetRequestableExtensionsCHROMIUM(kResultBucketId);
2971   std::string str;
2972   if (GetBucketAsString(kResultBucketId, &str)) {
2973     // The set of requestable extensions shrinks as we enable
2974     // them. Because we don't know when the client will stop referring
2975     // to a previous one it queries (see GetString) we need to cache
2976     // the unique results.
2977     std::set<std::string>::const_iterator sit =
2978         requestable_extensions_set_.find(str);
2979     if (sit != requestable_extensions_set_.end()) {
2980       result = sit->c_str();
2981     } else {
2982       std::pair<std::set<std::string>::const_iterator, bool> insert_result =
2983           requestable_extensions_set_.insert(str);
2984       DCHECK(insert_result.second);
2985       result = insert_result.first->c_str();
2986     }
2987   }
2988   GPU_CLIENT_LOG("  returned " << result);
2989   return reinterpret_cast<const GLchar*>(result);
2990 }
2991
2992 // TODO(gman): Remove this command. It's here for WebGL but is incompatible
2993 // with VirtualGL contexts.
2994 void GLES2Implementation::RequestExtensionCHROMIUM(const char* extension) {
2995   GPU_CLIENT_SINGLE_THREAD_CHECK();
2996   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glRequestExtensionCHROMIUM("
2997                  << extension << ")");
2998   SetBucketAsCString(kResultBucketId, extension);
2999   helper_->RequestExtensionCHROMIUM(kResultBucketId);
3000   helper_->SetBucketSize(kResultBucketId, 0);
3001
3002   struct ExtensionCheck {
3003     const char* extension;
3004     ExtensionStatus* status;
3005   };
3006   const ExtensionCheck checks[] = {
3007     {
3008       "GL_ANGLE_pack_reverse_row_order",
3009       &angle_pack_reverse_row_order_status_,
3010     },
3011     {
3012       "GL_CHROMIUM_framebuffer_multisample",
3013        &chromium_framebuffer_multisample_,
3014     },
3015   };
3016   const size_t kNumChecks = sizeof(checks)/sizeof(checks[0]);
3017   for (size_t ii = 0; ii < kNumChecks; ++ii) {
3018     const ExtensionCheck& check = checks[ii];
3019     if (*check.status == kUnavailableExtensionStatus &&
3020         !strcmp(extension, check.extension)) {
3021       *check.status = kUnknownExtensionStatus;
3022     }
3023   }
3024 }
3025
3026 void GLES2Implementation::RateLimitOffscreenContextCHROMIUM() {
3027   GPU_CLIENT_SINGLE_THREAD_CHECK();
3028   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glRateLimitOffscreenCHROMIUM()");
3029   // Wait if this would add too many rate limit tokens.
3030   if (rate_limit_tokens_.size() == kMaxSwapBuffers) {
3031     helper_->WaitForToken(rate_limit_tokens_.front());
3032     rate_limit_tokens_.pop();
3033   }
3034   rate_limit_tokens_.push(helper_->InsertToken());
3035 }
3036
3037 void GLES2Implementation::GetMultipleIntegervCHROMIUM(
3038     const GLenum* pnames, GLuint count, GLint* results, GLsizeiptr size) {
3039   GPU_CLIENT_SINGLE_THREAD_CHECK();
3040   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glGetMultipleIntegervCHROMIUM("
3041                  << static_cast<const void*>(pnames) << ", "
3042                  << count << ", " << results << ", "
3043                  << size << ")");
3044   GPU_CLIENT_LOG_CODE_BLOCK({
3045     for (GLuint i = 0; i < count; ++i) {
3046       GPU_CLIENT_LOG(
3047           "  " << i << ": " << GLES2Util::GetStringGLState(pnames[i]));
3048     }
3049   });
3050
3051   GetMultipleIntegervState state(pnames, count, results, size);
3052   if (!GetMultipleIntegervSetup(&state)) {
3053     return;
3054   }
3055   state.buffer = transfer_buffer_->Alloc(state.transfer_buffer_size_needed);
3056   if (!state.buffer) {
3057     SetGLError(GL_OUT_OF_MEMORY, "glGetMultipleIntegervCHROMIUM",
3058                "Transfer buffer allocation failed.");
3059     return;
3060   }
3061   GetMultipleIntegervRequest(&state);
3062   WaitForCmd();
3063   GetMultipleIntegervOnCompleted(&state);
3064
3065   GPU_CLIENT_LOG("  returned");
3066   GPU_CLIENT_LOG_CODE_BLOCK({
3067     for (int i = 0; i < state.num_results; ++i) {
3068       GPU_CLIENT_LOG("  " << i << ": " << (results[i]));
3069     }
3070   });
3071
3072   // TODO(gman): We should be able to free without a token.
3073   transfer_buffer_->FreePendingToken(state.buffer, helper_->InsertToken());
3074   CheckGLError();
3075 }
3076
3077 bool GLES2Implementation::GetMultipleIntegervSetup(
3078     GetMultipleIntegervState* state) {
3079   state->num_results = 0;
3080   for (GLuint ii = 0; ii < state->pnames_count; ++ii) {
3081     int num = util_.GLGetNumValuesReturned(state->pnames[ii]);
3082     if (!num) {
3083       SetGLErrorInvalidEnum(
3084           "glGetMultipleIntegervCHROMIUM", state->pnames[ii], "pname");
3085       return false;
3086     }
3087     state->num_results += num;
3088   }
3089   if (static_cast<size_t>(state->results_size) !=
3090       state->num_results * sizeof(GLint)) {
3091     SetGLError(GL_INVALID_VALUE, "glGetMultipleIntegervCHROMIUM", "bad size");
3092     return false;
3093   }
3094   for (int ii = 0; ii < state->num_results; ++ii) {
3095     if (state->results[ii] != 0) {
3096       SetGLError(GL_INVALID_VALUE,
3097                  "glGetMultipleIntegervCHROMIUM", "results not set to zero.");
3098       return false;
3099     }
3100   }
3101   state->transfer_buffer_size_needed =
3102       state->pnames_count * sizeof(state->pnames[0]) +
3103       state->num_results * sizeof(state->results[0]);
3104   return true;
3105 }
3106
3107 void GLES2Implementation::GetMultipleIntegervRequest(
3108     GetMultipleIntegervState* state) {
3109   GLenum* pnames_buffer = static_cast<GLenum*>(state->buffer);
3110   state->results_buffer = pnames_buffer + state->pnames_count;
3111   memcpy(pnames_buffer, state->pnames, state->pnames_count * sizeof(GLenum));
3112   memset(state->results_buffer, 0, state->num_results * sizeof(GLint));
3113   helper_->GetMultipleIntegervCHROMIUM(
3114       transfer_buffer_->GetShmId(),
3115       transfer_buffer_->GetOffset(pnames_buffer),
3116       state->pnames_count,
3117       transfer_buffer_->GetShmId(),
3118       transfer_buffer_->GetOffset(state->results_buffer),
3119       state->results_size);
3120 }
3121
3122 void GLES2Implementation::GetMultipleIntegervOnCompleted(
3123     GetMultipleIntegervState* state) {
3124   memcpy(state->results, state->results_buffer, state->results_size);;
3125 }
3126
3127 void GLES2Implementation::GetAllShaderPrecisionFormatsSetup(
3128     GetAllShaderPrecisionFormatsState* state) {
3129   state->transfer_buffer_size_needed =
3130       state->precision_params_count *
3131       sizeof(cmds::GetShaderPrecisionFormat::Result);
3132 }
3133
3134 void GLES2Implementation::GetAllShaderPrecisionFormatsRequest(
3135     GetAllShaderPrecisionFormatsState* state) {
3136   typedef cmds::GetShaderPrecisionFormat::Result Result;
3137   Result* result = static_cast<Result*>(state->results_buffer);
3138
3139   for (int i = 0; i < state->precision_params_count; i++) {
3140     result->success = false;
3141     helper_->GetShaderPrecisionFormat(state->precision_params[i][0],
3142                                       state->precision_params[i][1],
3143                                       transfer_buffer_->GetShmId(),
3144                                       transfer_buffer_->GetOffset(result));
3145     result++;
3146   }
3147 }
3148
3149 void GLES2Implementation::GetAllShaderPrecisionFormatsOnCompleted(
3150     GetAllShaderPrecisionFormatsState* state) {
3151   typedef cmds::GetShaderPrecisionFormat::Result Result;
3152   Result* result = static_cast<Result*>(state->results_buffer);
3153
3154   for (int i = 0; i < state->precision_params_count; i++) {
3155     if (result->success) {
3156       const GLStaticState::ShaderPrecisionKey key(
3157         state->precision_params[i][0], state->precision_params[i][1]);
3158       static_state_.shader_precisions[key] = *result;
3159     }
3160     result++;
3161   }
3162 }
3163
3164 void GLES2Implementation::GetProgramInfoCHROMIUMHelper(
3165     GLuint program, std::vector<int8>* result) {
3166   DCHECK(result);
3167   // Clear the bucket so if the command fails nothing will be in it.
3168   helper_->SetBucketSize(kResultBucketId, 0);
3169   helper_->GetProgramInfoCHROMIUM(program, kResultBucketId);
3170   GetBucketContents(kResultBucketId, result);
3171 }
3172
3173 void GLES2Implementation::GetProgramInfoCHROMIUM(
3174     GLuint program, GLsizei bufsize, GLsizei* size, void* info) {
3175   GPU_CLIENT_SINGLE_THREAD_CHECK();
3176   if (bufsize < 0) {
3177     SetGLError(
3178         GL_INVALID_VALUE, "glProgramInfoCHROMIUM", "bufsize less than 0.");
3179     return;
3180   }
3181   if (size == NULL) {
3182     SetGLError(GL_INVALID_VALUE, "glProgramInfoCHROMIUM", "size is null.");
3183     return;
3184   }
3185   // Make sure they've set size to 0 else the value will be undefined on
3186   // lost context.
3187   DCHECK(*size == 0);
3188   std::vector<int8> result;
3189   GetProgramInfoCHROMIUMHelper(program, &result);
3190   if (result.empty()) {
3191     return;
3192   }
3193   *size = result.size();
3194   if (!info) {
3195     return;
3196   }
3197   if (static_cast<size_t>(bufsize) < result.size()) {
3198     SetGLError(GL_INVALID_OPERATION,
3199                "glProgramInfoCHROMIUM", "bufsize is too small for result.");
3200     return;
3201   }
3202   memcpy(info, &result[0], result.size());
3203 }
3204
3205 GLuint GLES2Implementation::CreateStreamTextureCHROMIUM(GLuint texture) {
3206   GPU_CLIENT_SINGLE_THREAD_CHECK();
3207   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] CreateStreamTextureCHROMIUM("
3208       << texture << ")");
3209   TRACE_EVENT0("gpu", "GLES2::CreateStreamTextureCHROMIUM");
3210   typedef cmds::CreateStreamTextureCHROMIUM::Result Result;
3211   Result* result = GetResultAs<Result*>();
3212   if (!result) {
3213     return GL_ZERO;
3214   }
3215   *result = GL_ZERO;
3216
3217   helper_->CreateStreamTextureCHROMIUM(texture,
3218                                        GetResultShmId(),
3219                                        GetResultShmOffset());
3220   WaitForCmd();
3221   GLuint result_value = *result;
3222   CheckGLError();
3223   return result_value;
3224 }
3225
3226 void GLES2Implementation::DestroyStreamTextureCHROMIUM(GLuint texture) {
3227   GPU_CLIENT_SINGLE_THREAD_CHECK();
3228   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] DestroyStreamTextureCHROMIUM("
3229       << texture << ")");
3230   TRACE_EVENT0("gpu", "GLES2::DestroyStreamTextureCHROMIUM");
3231   helper_->DestroyStreamTextureCHROMIUM(texture);
3232   CheckGLError();
3233 }
3234
3235 void GLES2Implementation::PostSubBufferCHROMIUM(
3236     GLint x, GLint y, GLint width, GLint height) {
3237   GPU_CLIENT_SINGLE_THREAD_CHECK();
3238   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] PostSubBufferCHROMIUM("
3239       << x << ", " << y << ", " << width << ", " << height << ")");
3240   TRACE_EVENT2("gpu", "GLES2::PostSubBufferCHROMIUM",
3241                "width", width, "height", height);
3242
3243   // Same flow control as GLES2Implementation::SwapBuffers (see comments there).
3244   swap_buffers_tokens_.push(helper_->InsertToken());
3245   helper_->PostSubBufferCHROMIUM(x, y, width, height);
3246   helper_->CommandBufferHelper::Flush();
3247   if (swap_buffers_tokens_.size() > kMaxSwapBuffers + 1) {
3248     helper_->WaitForToken(swap_buffers_tokens_.front());
3249     swap_buffers_tokens_.pop();
3250   }
3251 }
3252
3253 void GLES2Implementation::DeleteQueriesEXTHelper(
3254     GLsizei n, const GLuint* queries) {
3255   // TODO(gman): Remove this as queries are not shared resources.
3256   if (!GetIdHandler(id_namespaces::kQueries)->FreeIds(
3257       this, n, queries, &GLES2Implementation::DeleteQueriesStub)) {
3258     SetGLError(
3259         GL_INVALID_VALUE,
3260         "glDeleteTextures", "id not created by this context.");
3261     return;
3262   }
3263
3264   for (GLsizei ii = 0; ii < n; ++ii)
3265     query_tracker_->RemoveQuery(queries[ii]);
3266
3267   helper_->DeleteQueriesEXTImmediate(n, queries);
3268 }
3269
3270 // TODO(gman): Remove this. Queries are not shared resources.
3271 void GLES2Implementation::DeleteQueriesStub(
3272     GLsizei /* n */, const GLuint* /* queries */) {
3273 }
3274
3275 GLboolean GLES2Implementation::IsQueryEXT(GLuint id) {
3276   GPU_CLIENT_SINGLE_THREAD_CHECK();
3277   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] IsQueryEXT(" << id << ")");
3278
3279   // TODO(gman): To be spec compliant IDs from other contexts sharing
3280   // resources need to return true here even though you can't share
3281   // queries across contexts?
3282   return query_tracker_->GetQuery(id) != NULL;
3283 }
3284
3285 void GLES2Implementation::BeginQueryEXT(GLenum target, GLuint id) {
3286   GPU_CLIENT_SINGLE_THREAD_CHECK();
3287   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] BeginQueryEXT("
3288                  << GLES2Util::GetStringQueryTarget(target)
3289                  << ", " << id << ")");
3290
3291   // if any outstanding queries INV_OP
3292   QueryMap::iterator it = current_queries_.find(target);
3293   if (it != current_queries_.end()) {
3294     SetGLError(
3295         GL_INVALID_OPERATION, "glBeginQueryEXT", "query already in progress");
3296     return;
3297   }
3298
3299   // id = 0 INV_OP
3300   if (id == 0) {
3301     SetGLError(GL_INVALID_OPERATION, "glBeginQueryEXT", "id is 0");
3302     return;
3303   }
3304
3305   // TODO(gman) if id not GENned INV_OPERATION
3306
3307   // if id does not have an object
3308   QueryTracker::Query* query = query_tracker_->GetQuery(id);
3309   if (!query) {
3310     query = query_tracker_->CreateQuery(id, target);
3311     if (!query) {
3312       MustBeContextLost();
3313       return;
3314     }
3315   } else if (query->target() != target) {
3316     SetGLError(
3317         GL_INVALID_OPERATION, "glBeginQueryEXT", "target does not match");
3318     return;
3319   }
3320
3321   current_queries_[target] = query;
3322
3323   query->Begin(this);
3324   CheckGLError();
3325 }
3326
3327 void GLES2Implementation::EndQueryEXT(GLenum target) {
3328   GPU_CLIENT_SINGLE_THREAD_CHECK();
3329   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] EndQueryEXT("
3330                  << GLES2Util::GetStringQueryTarget(target) << ")");
3331   // Don't do anything if the context is lost.
3332   if (helper_->IsContextLost()) {
3333     return;
3334   }
3335
3336   QueryMap::iterator it = current_queries_.find(target);
3337   if (it == current_queries_.end()) {
3338     SetGLError(GL_INVALID_OPERATION, "glEndQueryEXT", "no active query");
3339     return;
3340   }
3341
3342   QueryTracker::Query* query = it->second;
3343   query->End(this);
3344   current_queries_.erase(it);
3345   CheckGLError();
3346 }
3347
3348 void GLES2Implementation::GetQueryivEXT(
3349     GLenum target, GLenum pname, GLint* params) {
3350   GPU_CLIENT_SINGLE_THREAD_CHECK();
3351   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] GetQueryivEXT("
3352                  << GLES2Util::GetStringQueryTarget(target) << ", "
3353                  << GLES2Util::GetStringQueryParameter(pname) << ", "
3354                  << static_cast<const void*>(params) << ")");
3355
3356   if (pname != GL_CURRENT_QUERY_EXT) {
3357     SetGLErrorInvalidEnum("glGetQueryivEXT", pname, "pname");
3358     return;
3359   }
3360   QueryMap::iterator it = current_queries_.find(target);
3361   if (it != current_queries_.end()) {
3362     QueryTracker::Query* query = it->second;
3363     *params = query->id();
3364   } else {
3365     *params = 0;
3366   }
3367   GPU_CLIENT_LOG("  " << *params);
3368   CheckGLError();
3369 }
3370
3371 void GLES2Implementation::GetQueryObjectuivEXT(
3372     GLuint id, GLenum pname, GLuint* params) {
3373   GPU_CLIENT_SINGLE_THREAD_CHECK();
3374   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] GetQueryivEXT(" << id << ", "
3375                  << GLES2Util::GetStringQueryObjectParameter(pname) << ", "
3376                  << static_cast<const void*>(params) << ")");
3377
3378   QueryTracker::Query* query = query_tracker_->GetQuery(id);
3379   if (!query) {
3380     SetGLError(GL_INVALID_OPERATION, "glQueryObjectuivEXT", "unknown query id");
3381     return;
3382   }
3383
3384   QueryMap::iterator it = current_queries_.find(query->target());
3385   if (it != current_queries_.end()) {
3386     SetGLError(
3387         GL_INVALID_OPERATION,
3388         "glQueryObjectuivEXT", "query active. Did you to call glEndQueryEXT?");
3389     return;
3390   }
3391
3392   if (query->NeverUsed()) {
3393     SetGLError(
3394         GL_INVALID_OPERATION,
3395         "glQueryObjectuivEXT", "Never used. Did you call glBeginQueryEXT?");
3396     return;
3397   }
3398
3399   switch (pname) {
3400     case GL_QUERY_RESULT_EXT:
3401       if (!query->CheckResultsAvailable(helper_)) {
3402         helper_->WaitForToken(query->token());
3403         if (!query->CheckResultsAvailable(helper_)) {
3404           // TODO(gman): Speed this up.
3405           WaitForCmd();
3406           CHECK(query->CheckResultsAvailable(helper_));
3407         }
3408       }
3409       *params = query->GetResult();
3410       break;
3411     case GL_QUERY_RESULT_AVAILABLE_EXT:
3412       *params = query->CheckResultsAvailable(helper_);
3413       break;
3414     default:
3415       SetGLErrorInvalidEnum("glQueryObjectuivEXT", pname, "pname");
3416       break;
3417   }
3418   GPU_CLIENT_LOG("  " << *params);
3419   CheckGLError();
3420 }
3421
3422 void GLES2Implementation::DrawArraysInstancedANGLE(
3423     GLenum mode, GLint first, GLsizei count, GLsizei primcount) {
3424   GPU_CLIENT_SINGLE_THREAD_CHECK();
3425   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glDrawArraysInstancedANGLE("
3426       << GLES2Util::GetStringDrawMode(mode) << ", "
3427       << first << ", " << count << ", " << primcount << ")");
3428   if (count < 0) {
3429     SetGLError(GL_INVALID_VALUE, "glDrawArraysInstancedANGLE", "count < 0");
3430     return;
3431   }
3432   if (primcount < 0) {
3433     SetGLError(GL_INVALID_VALUE, "glDrawArraysInstancedANGLE", "primcount < 0");
3434     return;
3435   }
3436   if (primcount == 0) {
3437     return;
3438   }
3439   bool simulated = false;
3440   if (!vertex_array_object_manager_->SetupSimulatedClientSideBuffers(
3441       "glDrawArraysInstancedANGLE", this, helper_, first + count, primcount,
3442       &simulated)) {
3443     return;
3444   }
3445   helper_->DrawArraysInstancedANGLE(mode, first, count, primcount);
3446   RestoreArrayBuffer(simulated);
3447   CheckGLError();
3448 }
3449
3450 void GLES2Implementation::DrawElementsInstancedANGLE(
3451     GLenum mode, GLsizei count, GLenum type, const void* indices,
3452     GLsizei primcount) {
3453   GPU_CLIENT_SINGLE_THREAD_CHECK();
3454   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glDrawElementsInstancedANGLE("
3455       << GLES2Util::GetStringDrawMode(mode) << ", "
3456       << count << ", "
3457       << GLES2Util::GetStringIndexType(type) << ", "
3458       << static_cast<const void*>(indices) << ", "
3459       << primcount << ")");
3460   if (count < 0) {
3461     SetGLError(GL_INVALID_VALUE,
3462                "glDrawElementsInstancedANGLE", "count less than 0.");
3463     return;
3464   }
3465   if (count == 0) {
3466     return;
3467   }
3468   if (primcount < 0) {
3469     SetGLError(GL_INVALID_VALUE,
3470                "glDrawElementsInstancedANGLE", "primcount < 0");
3471     return;
3472   }
3473   if (primcount == 0) {
3474     return;
3475   }
3476   GLuint offset = 0;
3477   bool simulated = false;
3478   if (!vertex_array_object_manager_->SetupSimulatedIndexAndClientSideBuffers(
3479       "glDrawElementsInstancedANGLE", this, helper_, count, type, primcount,
3480       indices, &offset, &simulated)) {
3481     return;
3482   }
3483   helper_->DrawElementsInstancedANGLE(mode, count, type, offset, primcount);
3484   RestoreElementAndArrayBuffers(simulated);
3485   CheckGLError();
3486 }
3487
3488 void GLES2Implementation::GenMailboxCHROMIUM(
3489     GLbyte* mailbox) {
3490   GPU_CLIENT_SINGLE_THREAD_CHECK();
3491   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glGenMailboxCHROMIUM("
3492       << static_cast<const void*>(mailbox) << ")");
3493   TRACE_EVENT0("gpu", "GLES2::GenMailboxCHROMIUM");
3494
3495   std::vector<gpu::Mailbox> names;
3496   if (!gpu_control_->GenerateMailboxNames(1, &names)) {
3497     SetGLError(GL_OUT_OF_MEMORY, "glGenMailboxCHROMIUM", "Generate failed.");
3498     return;
3499   }
3500   memcpy(mailbox, names[0].name, GL_MAILBOX_SIZE_CHROMIUM);
3501 }
3502
3503 void GLES2Implementation::PushGroupMarkerEXT(
3504     GLsizei length, const GLchar* marker) {
3505   GPU_CLIENT_SINGLE_THREAD_CHECK();
3506   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glPushGroupMarkerEXT("
3507       << length << ", " << marker << ")");
3508   if (!marker) {
3509     marker = "";
3510   }
3511   SetBucketAsString(
3512       kResultBucketId,
3513       (length ? std::string(marker, length) : std::string(marker)));
3514   helper_->PushGroupMarkerEXT(kResultBucketId);
3515   helper_->SetBucketSize(kResultBucketId, 0);
3516   debug_marker_manager_.PushGroup(
3517       length ? std::string(marker, length) : std::string(marker));
3518 }
3519
3520 void GLES2Implementation::InsertEventMarkerEXT(
3521     GLsizei length, const GLchar* marker) {
3522   GPU_CLIENT_SINGLE_THREAD_CHECK();
3523   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glInsertEventMarkerEXT("
3524       << length << ", " << marker << ")");
3525   if (!marker) {
3526     marker = "";
3527   }
3528   SetBucketAsString(
3529       kResultBucketId,
3530       (length ? std::string(marker, length) : std::string(marker)));
3531   helper_->InsertEventMarkerEXT(kResultBucketId);
3532   helper_->SetBucketSize(kResultBucketId, 0);
3533   debug_marker_manager_.SetMarker(
3534       length ? std::string(marker, length) : std::string(marker));
3535 }
3536
3537 void GLES2Implementation::PopGroupMarkerEXT() {
3538   GPU_CLIENT_SINGLE_THREAD_CHECK();
3539   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glPopGroupMarkerEXT()");
3540   helper_->PopGroupMarkerEXT();
3541   debug_marker_manager_.PopGroup();
3542 }
3543
3544 void GLES2Implementation::TraceBeginCHROMIUM(const char* name) {
3545   GPU_CLIENT_SINGLE_THREAD_CHECK();
3546   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glTraceBeginCHROMIUM("
3547                  << name << ")");
3548   if (current_trace_name_.get()) {
3549     SetGLError(GL_INVALID_OPERATION, "glTraceBeginCHROMIUM",
3550                "trace already running");
3551     return;
3552   }
3553   TRACE_EVENT_COPY_ASYNC_BEGIN0("gpu", name, this);
3554   SetBucketAsCString(kResultBucketId, name);
3555   helper_->TraceBeginCHROMIUM(kResultBucketId);
3556   helper_->SetBucketSize(kResultBucketId, 0);
3557   current_trace_name_.reset(new std::string(name));
3558 }
3559
3560 void GLES2Implementation::TraceEndCHROMIUM() {
3561   GPU_CLIENT_SINGLE_THREAD_CHECK();
3562   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glTraceEndCHROMIUM(" << ")");
3563   if (!current_trace_name_.get()) {
3564     SetGLError(GL_INVALID_OPERATION, "glTraceEndCHROMIUM",
3565                "missing begin trace");
3566     return;
3567   }
3568   helper_->TraceEndCHROMIUM();
3569   TRACE_EVENT_COPY_ASYNC_END0("gpu", current_trace_name_->c_str(), this);
3570   current_trace_name_.reset();
3571 }
3572
3573 void* GLES2Implementation::MapBufferCHROMIUM(GLuint target, GLenum access) {
3574   GPU_CLIENT_SINGLE_THREAD_CHECK();
3575   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glMapBufferCHROMIUM("
3576       << target << ", " << GLES2Util::GetStringEnum(access) << ")");
3577   switch (target)  {
3578     case GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM:
3579       if (access != GL_READ_ONLY) {
3580         SetGLError(GL_INVALID_ENUM, "glMapBufferCHROMIUM", "bad access mode");
3581         return NULL;
3582       }
3583       break;
3584     case GL_PIXEL_UNPACK_TRANSFER_BUFFER_CHROMIUM:
3585       if (access != GL_WRITE_ONLY) {
3586         SetGLError(GL_INVALID_ENUM, "glMapBufferCHROMIUM", "bad access mode");
3587         return NULL;
3588       }
3589       break;
3590     default:
3591       SetGLError(
3592           GL_INVALID_ENUM, "glMapBufferCHROMIUM", "invalid target");
3593       return NULL;
3594   }
3595   GLuint buffer_id;
3596   GetBoundPixelTransferBuffer(target, "glMapBufferCHROMIUM", &buffer_id);
3597   if (!buffer_id) {
3598     return NULL;
3599   }
3600   BufferTracker::Buffer* buffer = buffer_tracker_->GetBuffer(buffer_id);
3601   if (!buffer) {
3602     SetGLError(GL_INVALID_OPERATION, "glMapBufferCHROMIUM", "invalid buffer");
3603     return NULL;
3604   }
3605   if (buffer->mapped()) {
3606     SetGLError(GL_INVALID_OPERATION, "glMapBufferCHROMIUM", "already mapped");
3607     return NULL;
3608   }
3609   // Here we wait for previous transfer operations to be finished.
3610   // TODO(hubbe): AsyncTex(Sub)Image2dCHROMIUM does not currently work
3611   // with this method of synchronization. Until this is fixed,
3612   // MapBufferCHROMIUM will not block even if the transfer is not ready
3613   // for these calls.
3614   if (buffer->transfer_ready_token()) {
3615     helper_->WaitForToken(buffer->transfer_ready_token());
3616     buffer->set_transfer_ready_token(0);
3617   }
3618   buffer->set_mapped(true);
3619
3620   GPU_CLIENT_LOG("  returned " << buffer->address());
3621   CheckGLError();
3622   return buffer->address();
3623 }
3624
3625 GLboolean GLES2Implementation::UnmapBufferCHROMIUM(GLuint target) {
3626   GPU_CLIENT_SINGLE_THREAD_CHECK();
3627   GPU_CLIENT_LOG(
3628       "[" << GetLogPrefix() << "] glUnmapBufferCHROMIUM(" << target << ")");
3629   GLuint buffer_id;
3630   if (!GetBoundPixelTransferBuffer(target, "glMapBufferCHROMIUM", &buffer_id)) {
3631     SetGLError(GL_INVALID_ENUM, "glUnmapBufferCHROMIUM", "invalid target");
3632   }
3633   if (!buffer_id) {
3634     return false;
3635   }
3636   BufferTracker::Buffer* buffer = buffer_tracker_->GetBuffer(buffer_id);
3637   if (!buffer) {
3638     SetGLError(GL_INVALID_OPERATION, "glUnmapBufferCHROMIUM", "invalid buffer");
3639     return false;
3640   }
3641   if (!buffer->mapped()) {
3642     SetGLError(GL_INVALID_OPERATION, "glUnmapBufferCHROMIUM", "not mapped");
3643     return false;
3644   }
3645   buffer->set_mapped(false);
3646   CheckGLError();
3647   return true;
3648 }
3649
3650 void GLES2Implementation::AsyncTexImage2DCHROMIUM(
3651     GLenum target, GLint level, GLint internalformat, GLsizei width,
3652     GLsizei height, GLint border, GLenum format, GLenum type,
3653     const void* pixels) {
3654   GPU_CLIENT_SINGLE_THREAD_CHECK();
3655   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glTexImage2D("
3656       << GLES2Util::GetStringTextureTarget(target) << ", "
3657       << level << ", "
3658       << GLES2Util::GetStringTextureInternalFormat(internalformat) << ", "
3659       << width << ", " << height << ", " << border << ", "
3660       << GLES2Util::GetStringTextureFormat(format) << ", "
3661       << GLES2Util::GetStringPixelType(type) << ", "
3662       << static_cast<const void*>(pixels) << ")");
3663   if (level < 0 || height < 0 || width < 0) {
3664     SetGLError(GL_INVALID_VALUE, "glTexImage2D", "dimension < 0");
3665     return;
3666   }
3667   uint32 size;
3668   uint32 unpadded_row_size;
3669   uint32 padded_row_size;
3670   if (!GLES2Util::ComputeImageDataSizes(
3671           width, height, format, type, unpack_alignment_, &size,
3672           &unpadded_row_size, &padded_row_size)) {
3673     SetGLError(GL_INVALID_VALUE, "glTexImage2D", "image size too large");
3674     return;
3675   }
3676
3677   // If there's no data/buffer just issue the AsyncTexImage2D
3678   if (!pixels && !bound_pixel_unpack_transfer_buffer_id_) {
3679     helper_->AsyncTexImage2DCHROMIUM(
3680        target, level, internalformat, width, height, border, format, type,
3681        0, 0);
3682     return;
3683   }
3684
3685   // Otherwise, async uploads require a transfer buffer to be bound.
3686   // TODO(hubbe): Make MapBufferCHROMIUM block if someone tries to re-use
3687   // the buffer before the transfer is finished. (Currently such
3688   // synchronization has to be handled manually.)
3689   GLuint offset = ToGLuint(pixels);
3690   BufferTracker::Buffer* buffer = GetBoundPixelUnpackTransferBufferIfValid(
3691       bound_pixel_unpack_transfer_buffer_id_,
3692       "glAsyncTexImage2DCHROMIUM", offset, size);
3693   if (buffer && buffer->shm_id() != -1) {
3694     helper_->AsyncTexImage2DCHROMIUM(
3695         target, level, internalformat, width, height, border, format, type,
3696         buffer->shm_id(), buffer->shm_offset() + offset);
3697   }
3698 }
3699
3700 void GLES2Implementation::AsyncTexSubImage2DCHROMIUM(
3701     GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width,
3702     GLsizei height, GLenum format, GLenum type, const void* pixels) {
3703   GPU_CLIENT_SINGLE_THREAD_CHECK();
3704   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glAsyncTexSubImage2DCHROMIUM("
3705       << GLES2Util::GetStringTextureTarget(target) << ", "
3706       << level << ", "
3707       << xoffset << ", " << yoffset << ", "
3708       << width << ", " << height << ", "
3709       << GLES2Util::GetStringTextureFormat(format) << ", "
3710       << GLES2Util::GetStringPixelType(type) << ", "
3711       << static_cast<const void*>(pixels) << ")");
3712   if (level < 0 || height < 0 || width < 0) {
3713     SetGLError(
3714         GL_INVALID_VALUE, "glAsyncTexSubImage2DCHROMIUM", "dimension < 0");
3715     return;
3716   }
3717
3718   uint32 size;
3719   uint32 unpadded_row_size;
3720   uint32 padded_row_size;
3721   if (!GLES2Util::ComputeImageDataSizes(
3722         width, height, format, type, unpack_alignment_, &size,
3723         &unpadded_row_size, &padded_row_size)) {
3724     SetGLError(
3725         GL_INVALID_VALUE, "glAsyncTexSubImage2DCHROMIUM", "size to large");
3726     return;
3727   }
3728
3729   // Async uploads require a transfer buffer to be bound.
3730   // TODO(hubbe): Make MapBufferCHROMIUM block if someone tries to re-use
3731   // the buffer before the transfer is finished. (Currently such
3732   // synchronization has to be handled manually.)
3733   GLuint offset = ToGLuint(pixels);
3734   BufferTracker::Buffer* buffer = GetBoundPixelUnpackTransferBufferIfValid(
3735       bound_pixel_unpack_transfer_buffer_id_,
3736       "glAsyncTexSubImage2DCHROMIUM", offset, size);
3737   if (buffer && buffer->shm_id() != -1) {
3738     helper_->AsyncTexSubImage2DCHROMIUM(
3739         target, level, xoffset, yoffset, width, height, format, type,
3740         buffer->shm_id(), buffer->shm_offset() + offset);
3741   }
3742 }
3743
3744 void GLES2Implementation::WaitAsyncTexImage2DCHROMIUM(GLenum target) {
3745   GPU_CLIENT_SINGLE_THREAD_CHECK();
3746   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glWaitAsyncTexImage2DCHROMIUM("
3747       << GLES2Util::GetStringTextureTarget(target) << ")");
3748   helper_->WaitAsyncTexImage2DCHROMIUM(target);
3749   CheckGLError();
3750 }
3751
3752 GLuint GLES2Implementation::InsertSyncPointCHROMIUM() {
3753   GPU_CLIENT_SINGLE_THREAD_CHECK();
3754   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glInsertSyncPointCHROMIUM");
3755   helper_->CommandBufferHelper::Flush();
3756   return gpu_control_->InsertSyncPoint();
3757 }
3758
3759 GLuint GLES2Implementation::CreateImageCHROMIUMHelper(
3760     GLsizei width, GLsizei height, GLenum internalformat) {
3761   if (width <= 0) {
3762     SetGLError(GL_INVALID_VALUE, "glCreateImageCHROMIUM", "width <= 0");
3763     return 0;
3764   }
3765
3766   if (height <= 0) {
3767     SetGLError(GL_INVALID_VALUE, "glCreateImageCHROMIUM", "height <= 0");
3768     return 0;
3769   }
3770   // Flush the command stream to ensure ordering in case the newly
3771   // returned image_id has recently been in use with a different buffer.
3772   helper_->CommandBufferHelper::Flush();
3773
3774   // Create new buffer.
3775   GLuint buffer_id = gpu_memory_buffer_tracker_->CreateBuffer(
3776       width, height, internalformat);
3777   if (buffer_id == 0) {
3778     SetGLError(GL_OUT_OF_MEMORY, "glCreateImageCHROMIUM", "out of GPU memory.");
3779     return 0;
3780   }
3781   return buffer_id;
3782 }
3783
3784 GLuint GLES2Implementation::CreateImageCHROMIUM(
3785     GLsizei width, GLsizei height, GLenum internalformat) {
3786   GPU_CLIENT_SINGLE_THREAD_CHECK();
3787   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glCreateImageCHROMIUM("
3788       << width << ", "
3789       << height << ", "
3790       << GLES2Util::GetStringTextureInternalFormat(internalformat) << ")");
3791   GLuint image_id = CreateImageCHROMIUMHelper(width, height, internalformat);
3792   CheckGLError();
3793   return image_id;
3794 }
3795
3796 void GLES2Implementation::DestroyImageCHROMIUMHelper(GLuint image_id) {
3797   gfx::GpuMemoryBuffer* gpu_buffer = gpu_memory_buffer_tracker_->GetBuffer(
3798       image_id);
3799   if (!gpu_buffer) {
3800     SetGLError(GL_INVALID_OPERATION, "glDestroyImageCHROMIUM", "invalid image");
3801     return;
3802   }
3803
3804   // Flush the command stream to make sure all pending commands
3805   // that may refer to the image_id are executed on the service side.
3806   helper_->CommandBufferHelper::Flush();
3807   gpu_memory_buffer_tracker_->RemoveBuffer(image_id);
3808 }
3809
3810 void GLES2Implementation::DestroyImageCHROMIUM(GLuint image_id) {
3811   GPU_CLIENT_SINGLE_THREAD_CHECK();
3812   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glDestroyImageCHROMIUM("
3813       << image_id << ")");
3814   DestroyImageCHROMIUMHelper(image_id);
3815   CheckGLError();
3816 }
3817
3818 void GLES2Implementation::UnmapImageCHROMIUMHelper(GLuint image_id) {
3819   gfx::GpuMemoryBuffer* gpu_buffer = gpu_memory_buffer_tracker_->GetBuffer(
3820       image_id);
3821   if (!gpu_buffer) {
3822     SetGLError(GL_INVALID_OPERATION, "glUnmapImageCHROMIUM", "invalid image");
3823     return;
3824   }
3825
3826   if (!gpu_buffer->IsMapped()) {
3827     SetGLError(GL_INVALID_OPERATION, "glUnmapImageCHROMIUM", "not mapped");
3828     return;
3829   }
3830   gpu_buffer->Unmap();
3831 }
3832
3833 void GLES2Implementation::UnmapImageCHROMIUM(GLuint image_id) {
3834   GPU_CLIENT_SINGLE_THREAD_CHECK();
3835   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glUnmapImageCHROMIUM("
3836        << image_id << ")");
3837
3838   UnmapImageCHROMIUMHelper(image_id);
3839   CheckGLError();
3840 }
3841
3842 void* GLES2Implementation::MapImageCHROMIUMHelper(GLuint image_id,
3843                                                   GLenum access) {
3844   gfx::GpuMemoryBuffer* gpu_buffer = gpu_memory_buffer_tracker_->GetBuffer(
3845       image_id);
3846   if (!gpu_buffer) {
3847     SetGLError(GL_INVALID_OPERATION, "glMapImageCHROMIUM", "invalid image");
3848     return NULL;
3849   }
3850   gfx::GpuMemoryBuffer::AccessMode mode;
3851   switch(access) {
3852     case GL_WRITE_ONLY:
3853       mode = gfx::GpuMemoryBuffer::WRITE_ONLY;
3854       break;
3855     case GL_READ_ONLY:
3856       mode = gfx::GpuMemoryBuffer::READ_ONLY;
3857       break;
3858     case GL_READ_WRITE:
3859       mode = gfx::GpuMemoryBuffer::READ_WRITE;
3860       break;
3861     default:
3862       SetGLError(GL_INVALID_ENUM, "glMapImageCHROMIUM",
3863                  "invalid GPU access mode");
3864       return NULL;
3865   }
3866
3867   if (gpu_buffer->IsMapped()) {
3868     SetGLError(GL_INVALID_OPERATION, "glMapImageCHROMIUM", "already mapped");
3869     return NULL;
3870   }
3871
3872   void* mapped_buffer = NULL;
3873   gpu_buffer->Map(mode, &mapped_buffer);
3874   return mapped_buffer;
3875 }
3876
3877 void* GLES2Implementation::MapImageCHROMIUM(
3878     GLuint image_id, GLenum access) {
3879   GPU_CLIENT_SINGLE_THREAD_CHECK();
3880   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glMapImageCHROMIUM("
3881       << image_id << ", "
3882       << GLES2Util::GetStringEnum(access) << ")");
3883
3884   void* mapped = MapImageCHROMIUMHelper(image_id, access);
3885   CheckGLError();
3886   return mapped;
3887 }
3888
3889 void GLES2Implementation::GetImageParameterivCHROMIUMHelper(
3890     GLuint image_id, GLenum pname, GLint* params) {
3891   if (pname != GL_IMAGE_ROWBYTES_CHROMIUM) {
3892     SetGLError(GL_INVALID_ENUM, "glGetImageParameterivCHROMIUM",
3893                "invalid parameter");
3894     return;
3895   }
3896
3897   gfx::GpuMemoryBuffer* gpu_buffer = gpu_memory_buffer_tracker_->GetBuffer(
3898       image_id);
3899   if (!gpu_buffer) {
3900     SetGLError(GL_INVALID_OPERATION, "glGetImageParameterivCHROMIUM",
3901                "invalid image");
3902     return;
3903   }
3904
3905   *params = gpu_buffer->GetStride();
3906 }
3907
3908 void GLES2Implementation::GetImageParameterivCHROMIUM(
3909     GLuint image_id, GLenum pname, GLint* params) {
3910   GPU_CLIENT_SINGLE_THREAD_CHECK();
3911   GPU_CLIENT_VALIDATE_DESTINATION_INITALIZATION(GLint, params);
3912   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glImageParameterivCHROMIUM("
3913       << image_id << ", "
3914       << GLES2Util::GetStringBufferParameter(pname) << ", "
3915       << static_cast<const void*>(params) << ")");
3916   GetImageParameterivCHROMIUMHelper(image_id, pname, params);
3917   CheckGLError();
3918 }
3919
3920 // Include the auto-generated part of this file. We split this because it means
3921 // we can easily edit the non-auto generated parts right here in this file
3922 // instead of having to edit some template or the code generator.
3923 #include "gpu/command_buffer/client/gles2_implementation_impl_autogen.h"
3924
3925 }  // namespace gles2
3926 }  // namespace gpu