gpu/command_buffer/service/texture_manager.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 #include "gpu/command_buffer/service/texture_manager.h"
   6
   7 #include <algorithm>
   8 #include <set>
   9 #include <utility>
  10
  11 #include "base/bits.h"
  12 #include "base/lazy_instance.h"
  13 #include "base/strings/stringprintf.h"
  14 #include "base/thread_task_runner_handle.h"
  15 #include "base/trace_event/memory_dump_manager.h"
  16 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
  17 #include "gpu/command_buffer/service/context_state.h"
  18 #include "gpu/command_buffer/service/error_state.h"
  19 #include "gpu/command_buffer/service/feature_info.h"
  20 #include "gpu/command_buffer/service/framebuffer_manager.h"
  21 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
  22 #include "gpu/command_buffer/service/mailbox_manager.h"
  23 #include "gpu/command_buffer/service/memory_tracking.h"
  24 #include "ui/gl/gl_implementation.h"
  25 #include "ui/gl/trace_util.h"
  26
  27 namespace gpu {
  28 namespace gles2 {
  29
  30 namespace {
  31
  32 // This should contain everything to uniquely identify a Texture.
  33 const char TextureTag[] = "|Texture|";
  34 struct TextureSignature {
  35   GLenum target_;
  36   GLint level_;
  37   GLenum min_filter_;
  38   GLenum mag_filter_;
  39   GLenum wrap_r_;
  40   GLenum wrap_s_;
  41   GLenum wrap_t_;
  42   GLenum usage_;
  43   GLenum internal_format_;
  44   GLenum compare_func_;
  45   GLenum compare_mode_;
  46   GLsizei width_;
  47   GLsizei height_;
  48   GLsizei depth_;
  49   GLfloat max_lod_;
  50   GLfloat min_lod_;
  51   GLint base_level_;
  52   GLint border_;
  53   GLint max_level_;
  54   GLenum format_;
  55   GLenum type_;
  56   bool has_image_;
  57   bool can_render_;
  58   bool can_render_to_;
  59   bool npot_;
  60
  61   // Since we will be hashing this signature structure, the padding must be
  62   // zero initialized. Although the C++11 specifications specify that this is
  63   // true, we will use a constructor with a memset to further enforce it instead
  64   // of relying on compilers adhering to this deep dark corner specification.
  65   TextureSignature(GLenum target,
  66                    GLint level,
  67                    GLenum min_filter,
  68                    GLenum mag_filter,
  69                    GLenum wrap_r,
  70                    GLenum wrap_s,
  71                    GLenum wrap_t,
  72                    GLenum usage,
  73                    GLenum internal_format,
  74                    GLenum compare_func,
  75                    GLenum compare_mode,
  76                    GLsizei width,
  77                    GLsizei height,
  78                    GLsizei depth,
  79                    GLfloat max_lod,
  80                    GLfloat min_lod,
  81                    GLint base_level,
  82                    GLint border,
  83                    GLint max_level,
  84                    GLenum format,
  85                    GLenum type,
  86                    bool has_image,
  87                    bool can_render,
  88                    bool can_render_to,
  89                    bool npot) {
  90     memset(this, 0, sizeof(TextureSignature));
  91     target_ = target;
  92     level_ = level;
  93     min_filter_ = min_filter;
  94     mag_filter_ = mag_filter;
  95     wrap_r_ = wrap_r;
  96     wrap_s_ = wrap_s;
  97     wrap_t_ = wrap_t;
  98     usage_ = usage;
  99     internal_format_ = internal_format;
 100     compare_func_ = compare_func;
 101     compare_mode_ = compare_mode;
 102     width_ = width;
 103     height_ = height;
 104     depth_ = depth;
 105     max_lod_ = max_lod;
 106     min_lod_ = min_lod;
 107     base_level_ = base_level;
 108     border_ = border;
 109     max_level_ = max_level;
 110     format_ = format;
 111     type_ = type;
 112     has_image_ = has_image;
 113     can_render_ = can_render;
 114     can_render_to_ = can_render_to;
 115     npot_ = npot;
 116   }
 117 };
 118
 119 class FormatTypeValidator {
 120  public:
 121   FormatTypeValidator() {
 122     static const FormatType kSupportedFormatTypes[] = {
 123         // ES2.
 124         { GL_RGB, GL_RGB, GL_UNSIGNED_BYTE },
 125         { GL_RGB, GL_RGB, GL_UNSIGNED_SHORT_5_6_5 },
 126         { GL_RGBA, GL_RGBA, GL_UNSIGNED_BYTE },
 127         { GL_RGBA, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4 },
 128         { GL_RGBA, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1 },
 129         { GL_LUMINANCE_ALPHA, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE },
 130         { GL_LUMINANCE, GL_LUMINANCE, GL_UNSIGNED_BYTE },
 131         { GL_ALPHA, GL_ALPHA, GL_UNSIGNED_BYTE },
 132         // Exposed by GL_OES_texture_float and GL_OES_texture_half_float
 133         { GL_RGB, GL_RGB, GL_FLOAT },
 134         { GL_RGBA, GL_RGBA, GL_FLOAT },
 135         { GL_LUMINANCE_ALPHA, GL_LUMINANCE_ALPHA, GL_FLOAT },
 136         { GL_LUMINANCE, GL_LUMINANCE, GL_FLOAT },
 137         { GL_ALPHA, GL_ALPHA, GL_FLOAT },
 138         { GL_RGB, GL_RGB, GL_HALF_FLOAT_OES },
 139         { GL_RGBA, GL_RGBA, GL_HALF_FLOAT_OES },
 140         { GL_LUMINANCE_ALPHA, GL_LUMINANCE_ALPHA, GL_HALF_FLOAT_OES },
 141         { GL_LUMINANCE, GL_LUMINANCE, GL_HALF_FLOAT_OES },
 142         { GL_ALPHA, GL_ALPHA, GL_HALF_FLOAT_OES },
 143         // Exposed by GL_ANGLE_depth_texture
 144         { GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT },
 145         { GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT },
 146         { GL_DEPTH_STENCIL, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8 },
 147         // Exposed by GL_EXT_sRGB
 148         { GL_SRGB, GL_SRGB, GL_UNSIGNED_BYTE },
 149         { GL_SRGB_ALPHA, GL_SRGB_ALPHA, GL_UNSIGNED_BYTE },
 150         // Exposed by GL_EXT_texture_format_BGRA8888
 151         { GL_BGRA_EXT, GL_BGRA_EXT, GL_UNSIGNED_BYTE },
 152         // Exposed by GL_EXT_texture_rg
 153         { GL_RED, GL_RED, GL_UNSIGNED_BYTE },
 154         { GL_RG, GL_RG, GL_UNSIGNED_BYTE },
 155         { GL_RED, GL_RED, GL_FLOAT },
 156         { GL_RG, GL_RG, GL_FLOAT },
 157         { GL_RED, GL_RED, GL_HALF_FLOAT_OES },
 158         { GL_RG, GL_RG, GL_HALF_FLOAT_OES },
 159
 160         // ES3.
 161         { GL_R8, GL_RED, GL_UNSIGNED_BYTE },
 162         { GL_R8_SNORM, GL_RED, GL_BYTE },
 163         { GL_R16F, GL_RED, GL_HALF_FLOAT },
 164         { GL_R16F, GL_RED, GL_FLOAT },
 165         { GL_R32F, GL_RED, GL_FLOAT },
 166         { GL_R8UI, GL_RED_INTEGER, GL_UNSIGNED_BYTE },
 167         { GL_R8I, GL_RED_INTEGER, GL_BYTE },
 168         { GL_R16UI, GL_RED_INTEGER, GL_UNSIGNED_SHORT },
 169         { GL_R16I, GL_RED_INTEGER, GL_SHORT },
 170         { GL_R32UI, GL_RED_INTEGER, GL_UNSIGNED_INT },
 171         { GL_R32I, GL_RED_INTEGER, GL_INT },
 172         { GL_RG8, GL_RG, GL_UNSIGNED_BYTE },
 173         { GL_RG8_SNORM, GL_RG, GL_BYTE },
 174         { GL_RG16F, GL_RG, GL_HALF_FLOAT },
 175         { GL_RG16F, GL_RG, GL_FLOAT },
 176         { GL_RG32F, GL_RG, GL_FLOAT },
 177         { GL_RG8UI, GL_RG_INTEGER, GL_UNSIGNED_BYTE },
 178         { GL_RG8I, GL_RG_INTEGER, GL_BYTE },
 179         { GL_RG16UI, GL_RG_INTEGER, GL_UNSIGNED_SHORT },
 180         { GL_RG16I, GL_RG_INTEGER, GL_SHORT },
 181         { GL_RG32UI, GL_RG_INTEGER, GL_UNSIGNED_INT },
 182         { GL_RG32I, GL_RG_INTEGER, GL_INT },
 183         { GL_RGB8, GL_RGB, GL_UNSIGNED_BYTE },
 184         { GL_SRGB8, GL_RGB, GL_UNSIGNED_BYTE },
 185         { GL_RGB565, GL_RGB, GL_UNSIGNED_BYTE, },
 186         { GL_RGB565, GL_RGB, GL_UNSIGNED_SHORT_5_6_5 },
 187         { GL_RGB8_SNORM, GL_RGB, GL_BYTE },
 188         { GL_R11F_G11F_B10F, GL_RGB, GL_UNSIGNED_INT_10F_11F_11F_REV },
 189         { GL_R11F_G11F_B10F, GL_RGB, GL_HALF_FLOAT },
 190         { GL_R11F_G11F_B10F, GL_RGB, GL_FLOAT },
 191         { GL_RGB9_E5, GL_RGB, GL_UNSIGNED_INT_5_9_9_9_REV },
 192         { GL_RGB9_E5, GL_RGB, GL_HALF_FLOAT },
 193         { GL_RGB9_E5, GL_RGB, GL_FLOAT },
 194         { GL_RGB16F, GL_RGB, GL_HALF_FLOAT },
 195         { GL_RGB16F, GL_RGB, GL_FLOAT },
 196         { GL_RGB32F, GL_RGB, GL_FLOAT },
 197         { GL_RGB8UI, GL_RGB_INTEGER, GL_UNSIGNED_BYTE },
 198         { GL_RGB8I, GL_RGB_INTEGER, GL_BYTE },
 199         { GL_RGB16UI, GL_RGB_INTEGER, GL_UNSIGNED_SHORT },
 200         { GL_RGB16I, GL_RGB_INTEGER, GL_SHORT },
 201         { GL_RGB32UI, GL_RGB_INTEGER, GL_UNSIGNED_INT },
 202         { GL_RGB32I, GL_RGB_INTEGER, GL_INT },
 203         { GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE },
 204         { GL_SRGB8_ALPHA8, GL_RGBA, GL_UNSIGNED_BYTE },
 205         { GL_RGBA8_SNORM, GL_RGBA, GL_BYTE },
 206         { GL_RGB5_A1, GL_RGBA, GL_UNSIGNED_BYTE },
 207         { GL_RGB5_A1, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1 },
 208         { GL_RGB5_A1, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV },
 209         { GL_RGBA4, GL_RGBA, GL_UNSIGNED_BYTE },
 210         { GL_RGBA4, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4 },
 211         { GL_RGB10_A2, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV },
 212         { GL_RGBA16F, GL_RGBA, GL_HALF_FLOAT },
 213         { GL_RGBA16F, GL_RGBA, GL_FLOAT },
 214         { GL_RGBA32F, GL_RGBA, GL_FLOAT },
 215         { GL_RGBA8UI, GL_RGBA_INTEGER, GL_UNSIGNED_BYTE },
 216         { GL_RGBA8I, GL_RGBA_INTEGER, GL_BYTE },
 217         { GL_RGB10_A2UI, GL_RGBA_INTEGER, GL_UNSIGNED_INT_2_10_10_10_REV },
 218         { GL_RGBA16UI, GL_RGBA_INTEGER, GL_UNSIGNED_SHORT },
 219         { GL_RGBA16I, GL_RGBA_INTEGER, GL_SHORT },
 220         { GL_RGBA32I, GL_RGBA_INTEGER, GL_INT },
 221         { GL_RGBA32UI, GL_RGBA_INTEGER, GL_UNSIGNED_INT },
 222         { GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT },
 223         { GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT },
 224         { GL_DEPTH_COMPONENT24, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT },
 225         { GL_DEPTH_COMPONENT32F, GL_DEPTH_COMPONENT, GL_FLOAT },
 226         { GL_DEPTH24_STENCIL8, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8 },
 227         { GL_DEPTH32F_STENCIL8, GL_DEPTH_STENCIL,
 228           GL_FLOAT_32_UNSIGNED_INT_24_8_REV },
 229     };
 230
 231     for (size_t ii = 0; ii < arraysize(kSupportedFormatTypes); ++ii) {
 232       supported_combinations_.insert(kSupportedFormatTypes[ii]);
 233     }
 234   }
 235
 236   // This may be accessed from multiple threads.
 237   bool IsValid(GLenum internal_format, GLenum format, GLenum type) const {
 238     FormatType query = { internal_format, format, type };
 239     return supported_combinations_.find(query) != supported_combinations_.end();
 240   }
 241
 242  private:
 243   // TODO(zmo): once std::tuple is allowed, switch over to that.
 244   struct FormatType {
 245     GLenum internal_format;
 246     GLenum format;
 247     GLenum type;
 248   };
 249
 250   struct FormatTypeCompare {
 251     bool operator() (const FormatType& lhs, const FormatType& rhs) const {
 252       return (lhs.internal_format < rhs.internal_format ||
 253               ((lhs.internal_format == rhs.internal_format) &&
 254                (lhs.format < rhs.format)) ||
 255               ((lhs.internal_format == rhs.internal_format) &&
 256                (lhs.format == rhs.format) &&
 257                (lhs.type < rhs.type)));
 258     }
 259   };
 260
 261   // This class needs to be thread safe, so once supported_combinations_
 262   // are initialized in the constructor, it should never be modified later.
 263   std::set<FormatType, FormatTypeCompare> supported_combinations_;
 264 };
 265
 266 base::LazyInstance<const FormatTypeValidator>::Leaky g_format_type_validator =
 267     LAZY_INSTANCE_INITIALIZER;
 268
 269 }  // namespace anonymous
 270
 271 TextureManager::DestructionObserver::DestructionObserver() {}
 272
 273 TextureManager::DestructionObserver::~DestructionObserver() {}
 274
 275 TextureManager::~TextureManager() {
 276   for (unsigned int i = 0; i < destruction_observers_.size(); i++)
 277     destruction_observers_[i]->OnTextureManagerDestroying(this);
 278
 279   DCHECK(textures_.empty());
 280
 281   // If this triggers, that means something is keeping a reference to
 282   // a Texture belonging to this.
 283   CHECK_EQ(texture_count_, 0u);
 284
 285   DCHECK_EQ(0, num_unrenderable_textures_);
 286   DCHECK_EQ(0, num_unsafe_textures_);
 287   DCHECK_EQ(0, num_uncleared_mips_);
 288   DCHECK_EQ(0, num_images_);
 289
 290   base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider(
 291       this);
 292 }
 293
 294 void TextureManager::Destroy(bool have_context) {
 295   have_context_ = have_context;
 296   textures_.clear();
 297   for (int ii = 0; ii < kNumDefaultTextures; ++ii) {
 298     default_textures_[ii] = NULL;
 299   }
 300
 301   if (have_context) {
 302     glDeleteTextures(arraysize(black_texture_ids_), black_texture_ids_);
 303   }
 304
 305   DCHECK_EQ(0u, memory_tracker_managed_->GetMemRepresented());
 306   DCHECK_EQ(0u, memory_tracker_unmanaged_->GetMemRepresented());
 307 }
 308
 309 Texture::Texture(GLuint service_id)
 310     : mailbox_manager_(NULL),
 311       memory_tracking_ref_(NULL),
 312       service_id_(service_id),
 313       cleared_(true),
 314       num_uncleared_mips_(0),
 315       num_npot_faces_(0),
 316       target_(0),
 317       min_filter_(GL_NEAREST_MIPMAP_LINEAR),
 318       mag_filter_(GL_LINEAR),
 319       wrap_r_(GL_REPEAT),
 320       wrap_s_(GL_REPEAT),
 321       wrap_t_(GL_REPEAT),
 322       usage_(GL_NONE),
 323       pool_(GL_TEXTURE_POOL_UNMANAGED_CHROMIUM),
 324       compare_func_(GL_LEQUAL),
 325       compare_mode_(GL_NONE),
 326       max_lod_(1000.0f),
 327       min_lod_(-1000.0f),
 328       base_level_(0),
 329       max_level_(1000),
 330       max_level_set_(-1),
 331       texture_complete_(false),
 332       texture_mips_dirty_(false),
 333       texture_mips_complete_(false),
 334       cube_complete_(false),
 335       texture_level0_dirty_(false),
 336       texture_level0_complete_(false),
 337       npot_(false),
 338       has_been_bound_(false),
 339       framebuffer_attachment_count_(0),
 340       immutable_(false),
 341       has_images_(false),
 342       estimated_size_(0),
 343       can_render_condition_(CAN_RENDER_ALWAYS),
 344       texture_max_anisotropy_initialized_(false) {
 345 }
 346
 347 Texture::~Texture() {
 348   if (mailbox_manager_)
 349     mailbox_manager_->TextureDeleted(this);
 350 }
 351
 352 void Texture::AddTextureRef(TextureRef* ref) {
 353   DCHECK(refs_.find(ref) == refs_.end());
 354   refs_.insert(ref);
 355   if (!memory_tracking_ref_) {
 356     memory_tracking_ref_ = ref;
 357     GetMemTracker()->TrackMemAlloc(estimated_size());
 358   }
 359 }
 360
 361 void Texture::RemoveTextureRef(TextureRef* ref, bool have_context) {
 362   if (memory_tracking_ref_ == ref) {
 363     GetMemTracker()->TrackMemFree(estimated_size());
 364     memory_tracking_ref_ = NULL;
 365   }
 366   size_t result = refs_.erase(ref);
 367   DCHECK_EQ(result, 1u);
 368   if (refs_.empty()) {
 369     if (have_context) {
 370       GLuint id = service_id();
 371       glDeleteTextures(1, &id);
 372     }
 373     delete this;
 374   } else if (memory_tracking_ref_ == NULL) {
 375     // TODO(piman): tune ownership semantics for cross-context group shared
 376     // textures.
 377     memory_tracking_ref_ = *refs_.begin();
 378     GetMemTracker()->TrackMemAlloc(estimated_size());
 379   }
 380 }
 381
 382 MemoryTypeTracker* Texture::GetMemTracker() {
 383   DCHECK(memory_tracking_ref_);
 384   return memory_tracking_ref_->manager()->GetMemTracker(pool_);
 385 }
 386
 387 Texture::LevelInfo::LevelInfo()
 388     : target(0),
 389       level(-1),
 390       internal_format(0),
 391       width(0),
 392       height(0),
 393       depth(0),
 394       border(0),
 395       format(0),
 396       type(0),
 397       estimated_size(0) {
 398 }
 399
 400 Texture::LevelInfo::LevelInfo(const LevelInfo& rhs)
 401     : cleared_rect(rhs.cleared_rect),
 402       target(rhs.target),
 403       level(rhs.level),
 404       internal_format(rhs.internal_format),
 405       width(rhs.width),
 406       height(rhs.height),
 407       depth(rhs.depth),
 408       border(rhs.border),
 409       format(rhs.format),
 410       type(rhs.type),
 411       image(rhs.image),
 412       estimated_size(rhs.estimated_size) {
 413 }
 414
 415 Texture::LevelInfo::~LevelInfo() {
 416 }
 417
 418 Texture::FaceInfo::FaceInfo()
 419     : num_mip_levels(0) {
 420 }
 421
 422 Texture::FaceInfo::~FaceInfo() {
 423 }
 424
 425 Texture::CanRenderCondition Texture::GetCanRenderCondition() const {
 426   if (target_ == 0)
 427     return CAN_RENDER_ALWAYS;
 428
 429   if (target_ != GL_TEXTURE_EXTERNAL_OES) {
 430     if (face_infos_.empty()) {
 431       return CAN_RENDER_NEVER;
 432     }
 433
 434     const Texture::LevelInfo& first_face = face_infos_[0].level_infos[0];
 435     if (first_face.width == 0 ||
 436         first_face.height == 0 ||
 437         first_face.depth == 0) {
 438       return CAN_RENDER_NEVER;
 439     }
 440   }
 441
 442   bool needs_mips = NeedsMips();
 443   if (needs_mips) {
 444     if (!texture_complete())
 445       return CAN_RENDER_NEVER;
 446   }
 447
 448   if (target_ == GL_TEXTURE_CUBE_MAP && !cube_complete())
 449     return CAN_RENDER_NEVER;
 450
 451   bool is_npot_compatible = !needs_mips &&
 452       wrap_s_ == GL_CLAMP_TO_EDGE &&
 453       wrap_t_ == GL_CLAMP_TO_EDGE;
 454
 455   if (!is_npot_compatible) {
 456     if (target_ == GL_TEXTURE_RECTANGLE_ARB)
 457       return CAN_RENDER_NEVER;
 458     else if (npot())
 459       return CAN_RENDER_ONLY_IF_NPOT;
 460   }
 461
 462   return CAN_RENDER_ALWAYS;
 463 }
 464
 465 bool Texture::CanRender(const FeatureInfo* feature_info) const {
 466   switch (can_render_condition_) {
 467     case CAN_RENDER_ALWAYS:
 468       return true;
 469     case CAN_RENDER_NEVER:
 470       return false;
 471     case CAN_RENDER_ONLY_IF_NPOT:
 472       break;
 473   }
 474   return feature_info->feature_flags().npot_ok;
 475 }
 476
 477 void Texture::AddToSignature(
 478     const FeatureInfo* feature_info,
 479     GLenum target,
 480     GLint level,
 481     std::string* signature) const {
 482   DCHECK(feature_info);
 483   DCHECK(signature);
 484   DCHECK_GE(level, 0);
 485   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
 486   DCHECK_LT(static_cast<size_t>(face_index),
 487             face_infos_.size());
 488   DCHECK_LT(static_cast<size_t>(level),
 489             face_infos_[face_index].level_infos.size());
 490
 491   const Texture::LevelInfo& info =
 492       face_infos_[face_index].level_infos[level];
 493
 494   TextureSignature signature_data(target,
 495                                   level,
 496                                   min_filter_,
 497                                   mag_filter_,
 498                                   wrap_r_,
 499                                   wrap_s_,
 500                                   wrap_t_,
 501                                   usage_,
 502                                   info.internal_format,
 503                                   compare_func_,
 504                                   compare_mode_,
 505                                   info.width,
 506                                   info.height,
 507                                   info.depth,
 508                                   max_lod_,
 509                                   min_lod_,
 510                                   base_level_,
 511                                   info.border,
 512                                   max_level_,
 513                                   info.format,
 514                                   info.type,
 515                                   info.image.get() != NULL,
 516                                   CanRender(feature_info),
 517                                   CanRenderTo(),
 518                                   npot_);
 519
 520   signature->append(TextureTag, sizeof(TextureTag));
 521   signature->append(reinterpret_cast<const char*>(&signature_data),
 522                     sizeof(signature_data));
 523 }
 524
 525 void Texture::SetMailboxManager(MailboxManager* mailbox_manager) {
 526   DCHECK(!mailbox_manager_ || mailbox_manager_ == mailbox_manager);
 527   mailbox_manager_ = mailbox_manager;
 528 }
 529
 530 bool Texture::MarkMipmapsGenerated(
 531     const FeatureInfo* feature_info) {
 532   if (!CanGenerateMipmaps(feature_info)) {
 533     return false;
 534   }
 535   for (size_t ii = 0; ii < face_infos_.size(); ++ii) {
 536     const Texture::FaceInfo& face_info = face_infos_[ii];
 537     const Texture::LevelInfo& level0_info = face_info.level_infos[0];
 538     GLsizei width = level0_info.width;
 539     GLsizei height = level0_info.height;
 540     GLsizei depth = level0_info.depth;
 541     GLenum target = target_ == GL_TEXTURE_2D ? GL_TEXTURE_2D :
 542                                GLES2Util::IndexToGLFaceTarget(ii);
 543
 544     const GLsizei num_mips = face_info.num_mip_levels;
 545     for (GLsizei level = 1; level < num_mips; ++level) {
 546       width = std::max(1, width >> 1);
 547       height = std::max(1, height >> 1);
 548       depth = std::max(1, depth >> 1);
 549       SetLevelInfo(feature_info, target, level, level0_info.internal_format,
 550                    width, height, depth, level0_info.border, level0_info.format,
 551                    level0_info.type, gfx::Rect(width, height));
 552     }
 553   }
 554
 555   return true;
 556 }
 557
 558 void Texture::SetTarget(
 559     const FeatureInfo* feature_info, GLenum target, GLint max_levels) {
 560   DCHECK_EQ(0u, target_);  // you can only set this once.
 561   target_ = target;
 562   size_t num_faces = (target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 563   face_infos_.resize(num_faces);
 564   for (size_t ii = 0; ii < num_faces; ++ii) {
 565     face_infos_[ii].level_infos.resize(max_levels);
 566   }
 567
 568   if (target == GL_TEXTURE_EXTERNAL_OES || target == GL_TEXTURE_RECTANGLE_ARB) {
 569     min_filter_ = GL_LINEAR;
 570     wrap_s_ = wrap_t_ = GL_CLAMP_TO_EDGE;
 571   }
 572
 573   if (target == GL_TEXTURE_EXTERNAL_OES) {
 574     immutable_ = true;
 575   }
 576   Update(feature_info);
 577   UpdateCanRenderCondition();
 578 }
 579
 580 bool Texture::CanGenerateMipmaps(
 581     const FeatureInfo* feature_info) const {
 582   if ((npot() && !feature_info->feature_flags().npot_ok) ||
 583       face_infos_.empty() ||
 584       target_ == GL_TEXTURE_EXTERNAL_OES ||
 585       target_ == GL_TEXTURE_RECTANGLE_ARB) {
 586     return false;
 587   }
 588
 589   if (static_cast<size_t>(base_level_) >= face_infos_[0].level_infos.size()) {
 590     return false;
 591   }
 592
 593   // Can't generate mips for depth or stencil textures.
 594   const Texture::LevelInfo& base = face_infos_[0].level_infos[base_level_];
 595   uint32 channels = GLES2Util::GetChannelsForFormat(base.format);
 596   if (channels & (GLES2Util::kDepth | GLES2Util::kStencil)) {
 597     return false;
 598   }
 599
 600   // TODO(gman): Check internal_format, format and type.
 601   for (size_t ii = 0; ii < face_infos_.size(); ++ii) {
 602     const LevelInfo& info = face_infos_[ii].level_infos[base_level_];
 603     if ((info.target == 0) || (info.width != base.width) ||
 604         (info.height != base.height) || (info.depth != base.depth) ||
 605         (info.format != base.format) ||
 606         (info.internal_format != base.internal_format) ||
 607         (info.type != base.type) ||
 608         feature_info->validators()->compressed_texture_format.IsValid(
 609             info.internal_format) ||
 610         info.image.get()) {
 611       return false;
 612     }
 613   }
 614   return true;
 615 }
 616
 617 bool Texture::TextureIsNPOT(GLsizei width,
 618                             GLsizei height,
 619                             GLsizei depth) {
 620   return (GLES2Util::IsNPOT(width) ||
 621           GLES2Util::IsNPOT(height) ||
 622           GLES2Util::IsNPOT(depth));
 623 }
 624
 625 bool Texture::TextureFaceComplete(const Texture::LevelInfo& first_face,
 626                                   size_t face_index,
 627                                   GLenum target,
 628                                   GLenum internal_format,
 629                                   GLsizei width,
 630                                   GLsizei height,
 631                                   GLsizei depth,
 632                                   GLenum format,
 633                                   GLenum type) {
 634   bool complete = (target != 0 && depth == 1);
 635   if (face_index != 0) {
 636     complete &= (width == first_face.width &&
 637                  height == first_face.height &&
 638                  internal_format == first_face.internal_format &&
 639                  format == first_face.format &&
 640                  type == first_face.type);
 641   }
 642   return complete;
 643 }
 644
 645 bool Texture::TextureMipComplete(const Texture::LevelInfo& level0_face,
 646                                  GLenum target,
 647                                  GLint level,
 648                                  GLenum internal_format,
 649                                  GLsizei width,
 650                                  GLsizei height,
 651                                  GLsizei depth,
 652                                  GLenum format,
 653                                  GLenum type) {
 654   bool complete = (target != 0);
 655   if (level != 0) {
 656     const GLsizei mip_width = std::max(1, level0_face.width >> level);
 657     const GLsizei mip_height = std::max(1, level0_face.height >> level);
 658     const GLsizei mip_depth = std::max(1, level0_face.depth >> level);
 659
 660     complete &= (width == mip_width &&
 661                  height == mip_height &&
 662                  depth == mip_depth &&
 663                  internal_format == level0_face.internal_format &&
 664                  format == level0_face.format &&
 665                  type == level0_face.type);
 666   }
 667   return complete;
 668 }
 669
 670 void Texture::SetLevelClearedRect(GLenum target,
 671                                   GLint level,
 672                                   const gfx::Rect& cleared_rect) {
 673   DCHECK_GE(level, 0);
 674   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
 675   DCHECK_LT(static_cast<size_t>(face_index),
 676             face_infos_.size());
 677   DCHECK_LT(static_cast<size_t>(level),
 678             face_infos_[face_index].level_infos.size());
 679   Texture::LevelInfo& info =
 680       face_infos_[face_index].level_infos[level];
 681   UpdateMipCleared(&info, info.width, info.height, cleared_rect);
 682   UpdateCleared();
 683 }
 684
 685 void Texture::SetLevelCleared(GLenum target, GLint level, bool cleared) {
 686   DCHECK_GE(level, 0);
 687   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
 688   DCHECK_LT(static_cast<size_t>(face_index), face_infos_.size());
 689   DCHECK_LT(static_cast<size_t>(level),
 690             face_infos_[face_index].level_infos.size());
 691   Texture::LevelInfo& info = face_infos_[face_index].level_infos[level];
 692   UpdateMipCleared(&info, info.width, info.height,
 693                    cleared ? gfx::Rect(info.width, info.height) : gfx::Rect());
 694   UpdateCleared();
 695 }
 696
 697 void Texture::UpdateCleared() {
 698   if (face_infos_.empty()) {
 699     return;
 700   }
 701
 702   const bool cleared = (num_uncleared_mips_ == 0);
 703
 704   // If texture is uncleared and is attached to a framebuffer,
 705   // that framebuffer must be marked possibly incomplete.
 706   if (!cleared && IsAttachedToFramebuffer()) {
 707     IncAllFramebufferStateChangeCount();
 708   }
 709
 710   UpdateSafeToRenderFrom(cleared);
 711 }
 712
 713 void Texture::UpdateSafeToRenderFrom(bool cleared) {
 714   if (cleared_ == cleared)
 715     return;
 716   cleared_ = cleared;
 717   int delta = cleared ? -1 : +1;
 718   for (RefSet::iterator it = refs_.begin(); it != refs_.end(); ++it)
 719     (*it)->manager()->UpdateSafeToRenderFrom(delta);
 720 }
 721
 722 void Texture::UpdateMipCleared(LevelInfo* info,
 723                                GLsizei width,
 724                                GLsizei height,
 725                                const gfx::Rect& cleared_rect) {
 726   bool was_cleared = info->cleared_rect == gfx::Rect(info->width, info->height);
 727   info->width = width;
 728   info->height = height;
 729   info->cleared_rect = cleared_rect;
 730   bool cleared = info->cleared_rect == gfx::Rect(info->width, info->height);
 731   if (cleared == was_cleared)
 732     return;
 733   int delta = cleared ? -1 : +1;
 734   num_uncleared_mips_ += delta;
 735   for (RefSet::iterator it = refs_.begin(); it != refs_.end(); ++it)
 736     (*it)->manager()->UpdateUnclearedMips(delta);
 737 }
 738
 739 void Texture::UpdateCanRenderCondition() {
 740   CanRenderCondition can_render_condition = GetCanRenderCondition();
 741   if (can_render_condition_ == can_render_condition)
 742     return;
 743   for (RefSet::iterator it = refs_.begin(); it != refs_.end(); ++it)
 744     (*it)->manager()->UpdateCanRenderCondition(can_render_condition_,
 745                                                can_render_condition);
 746   can_render_condition_ = can_render_condition;
 747 }
 748
 749 void Texture::UpdateHasImages() {
 750   if (face_infos_.empty())
 751     return;
 752
 753   bool has_images = false;
 754   for (size_t ii = 0; ii < face_infos_.size(); ++ii) {
 755     for (size_t jj = 0; jj < face_infos_[ii].level_infos.size(); ++jj) {
 756       const Texture::LevelInfo& info = face_infos_[ii].level_infos[jj];
 757       if (info.image.get() != NULL) {
 758         has_images = true;
 759         break;
 760       }
 761     }
 762   }
 763
 764   if (has_images_ == has_images)
 765     return;
 766   has_images_ = has_images;
 767   int delta = has_images ? +1 : -1;
 768   for (RefSet::iterator it = refs_.begin(); it != refs_.end(); ++it)
 769     (*it)->manager()->UpdateNumImages(delta);
 770 }
 771
 772 void Texture::IncAllFramebufferStateChangeCount() {
 773   for (RefSet::iterator it = refs_.begin(); it != refs_.end(); ++it)
 774     (*it)->manager()->IncFramebufferStateChangeCount();
 775 }
 776
 777 void Texture::SetLevelInfo(const FeatureInfo* feature_info,
 778                            GLenum target,
 779                            GLint level,
 780                            GLenum internal_format,
 781                            GLsizei width,
 782                            GLsizei height,
 783                            GLsizei depth,
 784                            GLint border,
 785                            GLenum format,
 786                            GLenum type,
 787                            const gfx::Rect& cleared_rect) {
 788   DCHECK_GE(level, 0);
 789   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
 790   DCHECK_LT(static_cast<size_t>(face_index),
 791             face_infos_.size());
 792   DCHECK_LT(static_cast<size_t>(level),
 793             face_infos_[face_index].level_infos.size());
 794   DCHECK_GE(width, 0);
 795   DCHECK_GE(height, 0);
 796   DCHECK_GE(depth, 0);
 797   Texture::LevelInfo& info =
 798       face_infos_[face_index].level_infos[level];
 799
 800   // Update counters only if any attributes have changed. Counters are
 801   // comparisons between the old and new values so it must be done before any
 802   // assignment has been done to the LevelInfo.
 803   if (info.target != target ||
 804       info.internal_format != internal_format ||
 805       info.width != width ||
 806       info.height != height ||
 807       info.depth != depth ||
 808       info.format != format ||
 809       info.type != type) {
 810     if (level == 0) {
 811       // Calculate the mip level count.
 812       face_infos_[face_index].num_mip_levels =
 813         TextureManager::ComputeMipMapCount(target_, width, height, depth);
 814
 815       // Update NPOT face count for the first level.
 816       bool prev_npot = TextureIsNPOT(info.width, info.height, info.depth);
 817       bool now_npot = TextureIsNPOT(width, height, depth);
 818       if (prev_npot != now_npot)
 819         num_npot_faces_ += now_npot ? 1 : -1;
 820
 821       // Signify that level 0 has been changed, so they need to be reverified.
 822       texture_level0_dirty_ = true;
 823     }
 824
 825     // Signify that at least one of the mips has changed.
 826     texture_mips_dirty_ = true;
 827   }
 828
 829   info.target = target;
 830   info.level = level;
 831   info.internal_format = internal_format;
 832   info.depth = depth;
 833   info.border = border;
 834   info.format = format;
 835   info.type = type;
 836   info.image = 0;
 837
 838   UpdateMipCleared(&info, width, height, cleared_rect);
 839
 840   estimated_size_ -= info.estimated_size;
 841   GLES2Util::ComputeImageDataSizes(
 842       width, height, 1, format, type, 4, &info.estimated_size, NULL, NULL);
 843   estimated_size_ += info.estimated_size;
 844
 845   max_level_set_ = std::max(max_level_set_, level);
 846   Update(feature_info);
 847   UpdateCleared();
 848   UpdateCanRenderCondition();
 849   UpdateHasImages();
 850   if (IsAttachedToFramebuffer()) {
 851     // TODO(gman): If textures tracked which framebuffers they were attached to
 852     // we could just mark those framebuffers as not complete.
 853     IncAllFramebufferStateChangeCount();
 854   }
 855 }
 856
 857 bool Texture::ValidForTexture(
 858     GLint target,
 859     GLint level,
 860     GLint xoffset,
 861     GLint yoffset,
 862     GLint zoffset,
 863     GLsizei width,
 864     GLsizei height,
 865     GLsizei depth,
 866     GLenum type) const {
 867   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
 868   if (level >= 0 && face_index < face_infos_.size() &&
 869       static_cast<size_t>(level) < face_infos_[face_index].level_infos.size()) {
 870     const LevelInfo& info = face_infos_[face_index].level_infos[level];
 871     int32 max_x;
 872     int32 max_y;
 873     int32 max_z;
 874     return SafeAddInt32(xoffset, width, &max_x) &&
 875            SafeAddInt32(yoffset, height, &max_y) &&
 876            SafeAddInt32(zoffset, depth, &max_z) &&
 877            xoffset >= 0 &&
 878            yoffset >= 0 &&
 879            zoffset >= 0 &&
 880            max_x <= info.width &&
 881            max_y <= info.height &&
 882            max_z <= info.depth &&
 883            type == info.type;
 884   }
 885   return false;
 886 }
 887
 888 bool Texture::GetLevelSize(
 889     GLint target, GLint level,
 890     GLsizei* width, GLsizei* height, GLsizei* depth) const {
 891   DCHECK(width);
 892   DCHECK(height);
 893   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
 894   if (level >= 0 && face_index < face_infos_.size() &&
 895       static_cast<size_t>(level) < face_infos_[face_index].level_infos.size()) {
 896     const LevelInfo& info = face_infos_[face_index].level_infos[level];
 897     if (info.target != 0) {
 898       *width = info.width;
 899       *height = info.height;
 900       if (depth)
 901         *depth = info.depth;
 902       return true;
 903     }
 904   }
 905   return false;
 906 }
 907
 908 bool Texture::GetLevelType(
 909     GLint target, GLint level, GLenum* type, GLenum* internal_format) const {
 910   DCHECK(type);
 911   DCHECK(internal_format);
 912   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
 913   if (level >= 0 && face_index < face_infos_.size() &&
 914       static_cast<size_t>(level) < face_infos_[face_index].level_infos.size()) {
 915     const LevelInfo& info = face_infos_[face_index].level_infos[level];
 916     if (info.target != 0) {
 917       *type = info.type;
 918       *internal_format = info.internal_format;
 919       return true;
 920     }
 921   }
 922   return false;
 923 }
 924
 925 GLenum Texture::SetParameteri(
 926     const FeatureInfo* feature_info, GLenum pname, GLint param) {
 927   DCHECK(feature_info);
 928
 929   if (target_ == GL_TEXTURE_EXTERNAL_OES ||
 930       target_ == GL_TEXTURE_RECTANGLE_ARB) {
 931     if (pname == GL_TEXTURE_MIN_FILTER &&
 932         (param != GL_NEAREST && param != GL_LINEAR))
 933       return GL_INVALID_ENUM;
 934     if ((pname == GL_TEXTURE_WRAP_S || pname == GL_TEXTURE_WRAP_T) &&
 935         param != GL_CLAMP_TO_EDGE)
 936       return GL_INVALID_ENUM;
 937   }
 938
 939   switch (pname) {
 940     case GL_TEXTURE_MIN_LOD:
 941     case GL_TEXTURE_MAX_LOD:
 942       {
 943         GLfloat fparam = static_cast<GLfloat>(param);
 944         return SetParameterf(feature_info, pname, fparam);
 945       }
 946     case GL_TEXTURE_MIN_FILTER:
 947       if (!feature_info->validators()->texture_min_filter_mode.IsValid(param)) {
 948         return GL_INVALID_ENUM;
 949       }
 950       min_filter_ = param;
 951       break;
 952     case GL_TEXTURE_MAG_FILTER:
 953       if (!feature_info->validators()->texture_mag_filter_mode.IsValid(param)) {
 954         return GL_INVALID_ENUM;
 955       }
 956       mag_filter_ = param;
 957       break;
 958     case GL_TEXTURE_POOL_CHROMIUM:
 959       if (!feature_info->validators()->texture_pool.IsValid(param)) {
 960         return GL_INVALID_ENUM;
 961       }
 962       GetMemTracker()->TrackMemFree(estimated_size());
 963       pool_ = param;
 964       GetMemTracker()->TrackMemAlloc(estimated_size());
 965       break;
 966     case GL_TEXTURE_WRAP_R:
 967       if (!feature_info->validators()->texture_wrap_mode.IsValid(param)) {
 968         return GL_INVALID_ENUM;
 969       }
 970       wrap_r_ = param;
 971       break;
 972     case GL_TEXTURE_WRAP_S:
 973       if (!feature_info->validators()->texture_wrap_mode.IsValid(param)) {
 974         return GL_INVALID_ENUM;
 975       }
 976       wrap_s_ = param;
 977       break;
 978     case GL_TEXTURE_WRAP_T:
 979       if (!feature_info->validators()->texture_wrap_mode.IsValid(param)) {
 980         return GL_INVALID_ENUM;
 981       }
 982       wrap_t_ = param;
 983       break;
 984     case GL_TEXTURE_COMPARE_FUNC:
 985       if (!feature_info->validators()->texture_compare_func.IsValid(param)) {
 986         return GL_INVALID_ENUM;
 987       }
 988       compare_func_ = param;
 989       break;
 990     case GL_TEXTURE_COMPARE_MODE:
 991       if (!feature_info->validators()->texture_compare_mode.IsValid(param)) {
 992         return GL_INVALID_ENUM;
 993       }
 994       compare_mode_ = param;
 995       break;
 996     case GL_TEXTURE_BASE_LEVEL:
 997       if (param < 0) {
 998         return GL_INVALID_VALUE;
 999       }
1000       base_level_ = param;
1001       break;
1002     case GL_TEXTURE_MAX_LEVEL:
1003       if (param < 0) {
1004         return GL_INVALID_VALUE;
1005       }
1006       max_level_ = param;
1007       break;
1008     case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1009       if (param < 1) {
1010         return GL_INVALID_VALUE;
1011       }
1012       break;
1013     case GL_TEXTURE_USAGE_ANGLE:
1014       if (!feature_info->validators()->texture_usage.IsValid(param)) {
1015         return GL_INVALID_ENUM;
1016       }
1017       usage_ = param;
1018       break;
1019     default:
1020       NOTREACHED();
1021       return GL_INVALID_ENUM;
1022   }
1023   Update(feature_info);
1024   UpdateCleared();
1025   UpdateCanRenderCondition();
1026   return GL_NO_ERROR;
1027 }
1028
1029 GLenum Texture::SetParameterf(
1030     const FeatureInfo* feature_info, GLenum pname, GLfloat param) {
1031   switch (pname) {
1032     case GL_TEXTURE_MIN_FILTER:
1033     case GL_TEXTURE_MAG_FILTER:
1034     case GL_TEXTURE_POOL_CHROMIUM:
1035     case GL_TEXTURE_WRAP_R:
1036     case GL_TEXTURE_WRAP_S:
1037     case GL_TEXTURE_WRAP_T:
1038     case GL_TEXTURE_COMPARE_FUNC:
1039     case GL_TEXTURE_COMPARE_MODE:
1040     case GL_TEXTURE_BASE_LEVEL:
1041     case GL_TEXTURE_MAX_LEVEL:
1042     case GL_TEXTURE_USAGE_ANGLE:
1043       {
1044         GLint iparam = static_cast<GLint>(param);
1045         return SetParameteri(feature_info, pname, iparam);
1046       }
1047     case GL_TEXTURE_MIN_LOD:
1048       min_lod_ = param;
1049       break;
1050     case GL_TEXTURE_MAX_LOD:
1051       max_lod_ = param;
1052       break;
1053     case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1054       if (param < 1.f) {
1055         return GL_INVALID_VALUE;
1056       }
1057       break;
1058     default:
1059       NOTREACHED();
1060       return GL_INVALID_ENUM;
1061   }
1062   return GL_NO_ERROR;
1063 }
1064
1065 void Texture::Update(const FeatureInfo* feature_info) {
1066   // Update npot status.
1067   // Assume GL_TEXTURE_EXTERNAL_OES textures are npot, all others
1068   npot_ = (target_ == GL_TEXTURE_EXTERNAL_OES) || (num_npot_faces_ > 0);
1069
1070   if (face_infos_.empty()) {
1071     texture_complete_ = false;
1072     cube_complete_ = false;
1073     return;
1074   }
1075
1076   // Update texture_complete and cube_complete status.
1077   const Texture::FaceInfo& first_face = face_infos_[0];
1078   const Texture::LevelInfo& first_level = first_face.level_infos[0];
1079   const GLsizei levels_needed = first_face.num_mip_levels;
1080
1081   texture_complete_ =
1082       max_level_set_ >= (levels_needed - 1) && max_level_set_ >= 0;
1083   cube_complete_ = (face_infos_.size() == 6) &&
1084                    (first_level.width == first_level.height);
1085
1086   if (first_level.width == 0 || first_level.height == 0) {
1087     texture_complete_ = false;
1088   } else if (first_level.type == GL_FLOAT &&
1089       !feature_info->feature_flags().enable_texture_float_linear &&
1090       (min_filter_ != GL_NEAREST_MIPMAP_NEAREST ||
1091        mag_filter_ != GL_NEAREST)) {
1092     texture_complete_ = false;
1093   } else if (first_level.type == GL_HALF_FLOAT_OES &&
1094              !feature_info->feature_flags().enable_texture_half_float_linear &&
1095              (min_filter_ != GL_NEAREST_MIPMAP_NEAREST ||
1096               mag_filter_ != GL_NEAREST)) {
1097     texture_complete_ = false;
1098   }
1099
1100   if (cube_complete_ && texture_level0_dirty_) {
1101     texture_level0_complete_ = true;
1102     for (size_t ii = 0; ii < face_infos_.size(); ++ii) {
1103       const Texture::LevelInfo& level0 = face_infos_[ii].level_infos[0];
1104       if (!TextureFaceComplete(first_level,
1105                                ii,
1106                                level0.target,
1107                                level0.internal_format,
1108                                level0.width,
1109                                level0.height,
1110                                level0.depth,
1111                                level0.format,
1112                                level0.type)) {
1113         texture_level0_complete_ = false;
1114         break;
1115       }
1116     }
1117     texture_level0_dirty_ = false;
1118   }
1119   cube_complete_ &= texture_level0_complete_;
1120
1121   if (texture_complete_ && texture_mips_dirty_) {
1122     texture_mips_complete_ = true;
1123     for (size_t ii = 0;
1124          ii < face_infos_.size() && texture_mips_complete_;
1125          ++ii) {
1126       const Texture::FaceInfo& face_info = face_infos_[ii];
1127       const Texture::LevelInfo& level0 = face_info.level_infos[0];
1128       for (GLsizei jj = 1; jj < levels_needed; ++jj) {
1129         const Texture::LevelInfo& level_info = face_infos_[ii].level_infos[jj];
1130         if (!TextureMipComplete(level0,
1131                                 level_info.target,
1132                                 jj,
1133                                 level_info.internal_format,
1134                                 level_info.width,
1135                                 level_info.height,
1136                                 level_info.depth,
1137                                 level_info.format,
1138                                 level_info.type)) {
1139           texture_mips_complete_ = false;
1140           break;
1141         }
1142       }
1143     }
1144     texture_mips_dirty_ = false;
1145   }
1146   texture_complete_ &= texture_mips_complete_;
1147 }
1148
1149 bool Texture::ClearRenderableLevels(GLES2Decoder* decoder) {
1150   DCHECK(decoder);
1151   if (cleared_) {
1152     return true;
1153   }
1154
1155   for (size_t ii = 0; ii < face_infos_.size(); ++ii) {
1156     const Texture::FaceInfo& face_info = face_infos_[ii];
1157     for (GLint jj = 0; jj < face_info.num_mip_levels; ++jj) {
1158       const Texture::LevelInfo& info = face_info.level_infos[jj];
1159       if (info.target != 0) {
1160         if (!ClearLevel(decoder, info.target, jj)) {
1161           return false;
1162         }
1163       }
1164     }
1165   }
1166   UpdateSafeToRenderFrom(true);
1167   return true;
1168 }
1169
1170 gfx::Rect Texture::GetLevelClearedRect(GLenum target, GLint level) const {
1171   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
1172   if (face_index >= face_infos_.size() ||
1173       level >= static_cast<GLint>(face_infos_[face_index].level_infos.size())) {
1174     return gfx::Rect();
1175   }
1176
1177   const Texture::LevelInfo& info = face_infos_[face_index].level_infos[level];
1178
1179   return info.cleared_rect;
1180 }
1181
1182 bool Texture::IsLevelCleared(GLenum target, GLint level) const {
1183   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
1184   if (face_index >= face_infos_.size() ||
1185       level >= static_cast<GLint>(face_infos_[face_index].level_infos.size())) {
1186     return true;
1187   }
1188
1189   const Texture::LevelInfo& info = face_infos_[face_index].level_infos[level];
1190
1191   return info.cleared_rect == gfx::Rect(info.width, info.height);
1192 }
1193
1194 void Texture::InitTextureMaxAnisotropyIfNeeded(GLenum target) {
1195   if (texture_max_anisotropy_initialized_)
1196     return;
1197   texture_max_anisotropy_initialized_ = true;
1198   GLfloat params[] = { 1.0f };
1199   glTexParameterfv(target, GL_TEXTURE_MAX_ANISOTROPY_EXT, params);
1200 }
1201
1202 bool Texture::ClearLevel(
1203     GLES2Decoder* decoder, GLenum target, GLint level) {
1204   DCHECK(decoder);
1205   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
1206   if (face_index >= face_infos_.size() ||
1207       level >= static_cast<GLint>(face_infos_[face_index].level_infos.size())) {
1208     return true;
1209   }
1210
1211   Texture::LevelInfo& info = face_infos_[face_index].level_infos[level];
1212
1213   DCHECK(target == info.target);
1214
1215   if (info.target == 0 ||
1216       info.cleared_rect == gfx::Rect(info.width, info.height) ||
1217       info.width == 0 || info.height == 0 || info.depth == 0) {
1218     return true;
1219   }
1220
1221   // Clear all remaining sub regions.
1222   const int x[] = {
1223       0, info.cleared_rect.x(), info.cleared_rect.right(), info.width};
1224   const int y[] = {
1225       0, info.cleared_rect.y(), info.cleared_rect.bottom(), info.height};
1226
1227   for (size_t j = 0; j < 3; ++j) {
1228     for (size_t i = 0; i < 3; ++i) {
1229       // Center of nine patch is already cleared.
1230       if (j == 1 && i == 1)
1231         continue;
1232
1233       gfx::Rect rect(x[i], y[j], x[i + 1] - x[i], y[j + 1] - y[j]);
1234       if (rect.IsEmpty())
1235         continue;
1236
1237       // NOTE: It seems kind of gross to call back into the decoder for this
1238       // but only the decoder knows all the state (like unpack_alignment_)
1239       // that's needed to be able to call GL correctly.
1240       bool cleared = decoder->ClearLevel(this, info.target, info.level,
1241                                          info.format, info.type, rect.x(),
1242                                          rect.y(), rect.width(), rect.height());
1243       if (!cleared)
1244         return false;
1245     }
1246   }
1247
1248   UpdateMipCleared(&info, info.width, info.height,
1249                    gfx::Rect(info.width, info.height));
1250   return true;
1251 }
1252
1253 void Texture::SetLevelImage(
1254     const FeatureInfo* feature_info,
1255     GLenum target,
1256     GLint level,
1257     gfx::GLImage* image) {
1258   DCHECK_GE(level, 0);
1259   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
1260   DCHECK_LT(static_cast<size_t>(face_index),
1261             face_infos_.size());
1262   DCHECK_LT(static_cast<size_t>(level),
1263             face_infos_[face_index].level_infos.size());
1264   Texture::LevelInfo& info =
1265       face_infos_[face_index].level_infos[level];
1266   DCHECK_EQ(info.target, target);
1267   DCHECK_EQ(info.level, level);
1268   info.image = image;
1269   UpdateCanRenderCondition();
1270   UpdateHasImages();
1271
1272   // TODO(ericrk): Images may have complex sizing not accounted for by
1273   // |estimated_size_|, we should add logic here to update |estimated_size_|
1274   // based on the new GLImage. crbug.com/526298
1275 }
1276
1277 gfx::GLImage* Texture::GetLevelImage(GLint target, GLint level) const {
1278   if (target != GL_TEXTURE_2D && target != GL_TEXTURE_EXTERNAL_OES &&
1279       target != GL_TEXTURE_RECTANGLE_ARB) {
1280     return NULL;
1281   }
1282
1283   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
1284   if (level >= 0 && face_index < face_infos_.size() &&
1285       static_cast<size_t>(level) < face_infos_[face_index].level_infos.size()) {
1286     const LevelInfo& info = face_infos_[face_index].level_infos[level];
1287     if (info.target != 0) {
1288       return info.image.get();
1289     }
1290   }
1291   return NULL;
1292 }
1293
1294 void Texture::OnWillModifyPixels() {
1295   gfx::GLImage* image = GetLevelImage(target(), 0);
1296   if (image)
1297     image->WillModifyTexImage();
1298 }
1299
1300 void Texture::OnDidModifyPixels() {
1301   gfx::GLImage* image = GetLevelImage(target(), 0);
1302   if (image)
1303     image->DidModifyTexImage();
1304 }
1305
1306 void Texture::DumpLevelMemory(base::trace_event::ProcessMemoryDump* pmd,
1307                               uint64_t client_tracing_id,
1308                               const std::string& dump_name) const {
1309   for (uint32_t face_index = 0; face_index < face_infos_.size(); ++face_index) {
1310     const auto& level_infos = face_infos_[face_index].level_infos;
1311     for (uint32_t level_index = 0; level_index < level_infos.size();
1312          ++level_index) {
1313       // Skip levels with no size. Textures will have empty levels for all
1314       // potential mip levels which are not in use.
1315       if (!level_infos[level_index].estimated_size)
1316         continue;
1317
1318       if (level_infos[level_index].image) {
1319         // If a level is backed by a GLImage, ask the GLImage to dump itself.
1320         level_infos[level_index].image->OnMemoryDump(
1321             pmd, client_tracing_id,
1322             base::StringPrintf("%s/face_%d/level_%d", dump_name.c_str(),
1323                                face_index, level_index));
1324       } else {
1325         // If a level is not backed by a GLImage, create a simple dump.
1326         base::trace_event::MemoryAllocatorDump* dump = pmd->CreateAllocatorDump(
1327             base::StringPrintf("%s/face_%d/level_%d", dump_name.c_str(),
1328                                face_index, level_index));
1329         dump->AddScalar(
1330             base::trace_event::MemoryAllocatorDump::kNameSize,
1331             base::trace_event::MemoryAllocatorDump::kUnitsBytes,
1332             static_cast<uint64_t>(level_infos[level_index].estimated_size));
1333       }
1334     }
1335   }
1336 }
1337
1338 TextureRef::TextureRef(TextureManager* manager,
1339                        GLuint client_id,
1340                        Texture* texture)
1341     : manager_(manager),
1342       texture_(texture),
1343       client_id_(client_id),
1344       num_observers_(0) {
1345   DCHECK(manager_);
1346   DCHECK(texture_);
1347   texture_->AddTextureRef(this);
1348   manager_->StartTracking(this);
1349 }
1350
1351 scoped_refptr<TextureRef> TextureRef::Create(TextureManager* manager,
1352                                              GLuint client_id,
1353                                              GLuint service_id) {
1354   return new TextureRef(manager, client_id, new Texture(service_id));
1355 }
1356
1357 TextureRef::~TextureRef() {
1358   manager_->StopTracking(this);
1359   texture_->RemoveTextureRef(this, manager_->have_context_);
1360   manager_ = NULL;
1361 }
1362
1363 TextureManager::TextureManager(MemoryTracker* memory_tracker,
1364                                FeatureInfo* feature_info,
1365                                GLint max_texture_size,
1366                                GLint max_cube_map_texture_size,
1367                                GLint max_rectangle_texture_size,
1368                                GLint max_3d_texture_size,
1369                                bool use_default_textures)
1370     : memory_tracker_managed_(
1371           new MemoryTypeTracker(memory_tracker, MemoryTracker::kManaged)),
1372       memory_tracker_unmanaged_(
1373           new MemoryTypeTracker(memory_tracker, MemoryTracker::kUnmanaged)),
1374       memory_tracker_(memory_tracker),
1375       feature_info_(feature_info),
1376       framebuffer_manager_(NULL),
1377       max_texture_size_(max_texture_size),
1378       max_cube_map_texture_size_(max_cube_map_texture_size),
1379       max_rectangle_texture_size_(max_rectangle_texture_size),
1380       max_3d_texture_size_(max_3d_texture_size),
1381       max_levels_(ComputeMipMapCount(GL_TEXTURE_2D,
1382                                      max_texture_size,
1383                                      max_texture_size,
1384                                      max_texture_size)),
1385       max_cube_map_levels_(ComputeMipMapCount(GL_TEXTURE_CUBE_MAP,
1386                                               max_cube_map_texture_size,
1387                                               max_cube_map_texture_size,
1388                                               max_cube_map_texture_size)),
1389       max_3d_levels_(ComputeMipMapCount(GL_TEXTURE_3D,
1390                                         // Same as GL_TEXTURE_2D_ARRAY
1391                                         max_3d_texture_size,
1392                                         max_3d_texture_size,
1393                                         max_3d_texture_size)),
1394       use_default_textures_(use_default_textures),
1395       num_unrenderable_textures_(0),
1396       num_unsafe_textures_(0),
1397       num_uncleared_mips_(0),
1398       num_images_(0),
1399       texture_count_(0),
1400       have_context_(true) {
1401   for (int ii = 0; ii < kNumDefaultTextures; ++ii) {
1402     black_texture_ids_[ii] = 0;
1403   }
1404 }
1405
1406 bool TextureManager::Initialize() {
1407   // TODO(gman): The default textures have to be real textures, not the 0
1408   // texture because we simulate non shared resources on top of shared
1409   // resources and all contexts that share resource share the same default
1410   // texture.
1411   default_textures_[kTexture2D] = CreateDefaultAndBlackTextures(
1412       GL_TEXTURE_2D, &black_texture_ids_[kTexture2D]);
1413   default_textures_[kCubeMap] = CreateDefaultAndBlackTextures(
1414       GL_TEXTURE_CUBE_MAP, &black_texture_ids_[kCubeMap]);
1415
1416   if (feature_info_->feature_flags().oes_egl_image_external) {
1417     default_textures_[kExternalOES] = CreateDefaultAndBlackTextures(
1418         GL_TEXTURE_EXTERNAL_OES, &black_texture_ids_[kExternalOES]);
1419   }
1420
1421   if (feature_info_->feature_flags().arb_texture_rectangle) {
1422     default_textures_[kRectangleARB] = CreateDefaultAndBlackTextures(
1423         GL_TEXTURE_RECTANGLE_ARB, &black_texture_ids_[kRectangleARB]);
1424   }
1425
1426   // When created from InProcessCommandBuffer, we won't have a |memory_tracker_|
1427   // so don't register a dump provider.
1428   if (memory_tracker_) {
1429     base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
1430         this, base::ThreadTaskRunnerHandle::Get());
1431   }
1432
1433   return true;
1434 }
1435
1436 scoped_refptr<TextureRef>
1437     TextureManager::CreateDefaultAndBlackTextures(
1438         GLenum target,
1439         GLuint* black_texture) {
1440   static uint8 black[] = {0, 0, 0, 255};
1441
1442   // Sampling a texture not associated with any EGLImage sibling will return
1443   // black values according to the spec.
1444   bool needs_initialization = (target != GL_TEXTURE_EXTERNAL_OES);
1445   bool needs_faces = (target == GL_TEXTURE_CUBE_MAP);
1446
1447   // Make default textures and texture for replacing non-renderable textures.
1448   GLuint ids[2];
1449   const int num_ids = use_default_textures_ ? 2 : 1;
1450   glGenTextures(num_ids, ids);
1451   for (int ii = 0; ii < num_ids; ++ii) {
1452     glBindTexture(target, ids[ii]);
1453     if (needs_initialization) {
1454       if (needs_faces) {
1455         for (int jj = 0; jj < GLES2Util::kNumFaces; ++jj) {
1456           glTexImage2D(GLES2Util::IndexToGLFaceTarget(jj), 0, GL_RGBA, 1, 1, 0,
1457                        GL_RGBA, GL_UNSIGNED_BYTE, black);
1458         }
1459       } else {
1460         glTexImage2D(target, 0, GL_RGBA, 1, 1, 0, GL_RGBA,
1461                      GL_UNSIGNED_BYTE, black);
1462       }
1463     }
1464   }
1465   glBindTexture(target, 0);
1466
1467   scoped_refptr<TextureRef> default_texture;
1468   if (use_default_textures_) {
1469     default_texture = TextureRef::Create(this, 0, ids[1]);
1470     SetTarget(default_texture.get(), target);
1471     if (needs_faces) {
1472       for (int ii = 0; ii < GLES2Util::kNumFaces; ++ii) {
1473         SetLevelInfo(default_texture.get(), GLES2Util::IndexToGLFaceTarget(ii),
1474                      0, GL_RGBA, 1, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE,
1475                      gfx::Rect(1, 1));
1476       }
1477     } else {
1478       if (needs_initialization) {
1479         SetLevelInfo(default_texture.get(), GL_TEXTURE_2D, 0, GL_RGBA, 1, 1, 1,
1480                      0, GL_RGBA, GL_UNSIGNED_BYTE, gfx::Rect(1, 1));
1481       } else {
1482         SetLevelInfo(default_texture.get(), GL_TEXTURE_EXTERNAL_OES, 0, GL_RGBA,
1483                      1, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, gfx::Rect(1, 1));
1484       }
1485     }
1486   }
1487
1488   *black_texture = ids[0];
1489   return default_texture;
1490 }
1491
1492 bool TextureManager::ValidForTarget(
1493     GLenum target, GLint level, GLsizei width, GLsizei height, GLsizei depth) {
1494   GLsizei max_size = MaxSizeForTarget(target) >> level;
1495   return level >= 0 &&
1496          width >= 0 &&
1497          height >= 0 &&
1498          depth >= 0 &&
1499          level < MaxLevelsForTarget(target) &&
1500          width <= max_size &&
1501          height <= max_size &&
1502          depth <= max_size &&
1503          (level == 0 || feature_info_->feature_flags().npot_ok ||
1504           (!GLES2Util::IsNPOT(width) &&
1505            !GLES2Util::IsNPOT(height) &&
1506            !GLES2Util::IsNPOT(depth))) &&
1507          (target != GL_TEXTURE_CUBE_MAP || (width == height && depth == 1)) &&
1508          (target != GL_TEXTURE_2D || (depth == 1));
1509 }
1510
1511 void TextureManager::SetTarget(TextureRef* ref, GLenum target) {
1512   DCHECK(ref);
1513   ref->texture()
1514       ->SetTarget(feature_info_.get(), target, MaxLevelsForTarget(target));
1515 }
1516
1517 void TextureManager::SetLevelClearedRect(TextureRef* ref,
1518                                          GLenum target,
1519                                          GLint level,
1520                                          const gfx::Rect& cleared_rect) {
1521   DCHECK(ref);
1522   ref->texture()->SetLevelClearedRect(target, level, cleared_rect);
1523 }
1524
1525 void TextureManager::SetLevelCleared(TextureRef* ref,
1526                                      GLenum target,
1527                                      GLint level,
1528                                      bool cleared) {
1529   DCHECK(ref);
1530   ref->texture()->SetLevelCleared(target, level, cleared);
1531 }
1532
1533 bool TextureManager::ClearRenderableLevels(
1534     GLES2Decoder* decoder, TextureRef* ref) {
1535   DCHECK(ref);
1536   return ref->texture()->ClearRenderableLevels(decoder);
1537 }
1538
1539 bool TextureManager::ClearTextureLevel(
1540     GLES2Decoder* decoder, TextureRef* ref,
1541     GLenum target, GLint level) {
1542   DCHECK(ref);
1543   Texture* texture = ref->texture();
1544   if (texture->num_uncleared_mips() == 0) {
1545     return true;
1546   }
1547   bool result = texture->ClearLevel(decoder, target, level);
1548   texture->UpdateCleared();
1549   return result;
1550 }
1551
1552 void TextureManager::SetLevelInfo(TextureRef* ref,
1553                                   GLenum target,
1554                                   GLint level,
1555                                   GLenum internal_format,
1556                                   GLsizei width,
1557                                   GLsizei height,
1558                                   GLsizei depth,
1559                                   GLint border,
1560                                   GLenum format,
1561                                   GLenum type,
1562                                   const gfx::Rect& cleared_rect) {
1563   DCHECK(gfx::Rect(width, height).Contains(cleared_rect));
1564   DCHECK(ref);
1565   Texture* texture = ref->texture();
1566
1567   texture->GetMemTracker()->TrackMemFree(texture->estimated_size());
1568   texture->SetLevelInfo(feature_info_.get(), target, level, internal_format,
1569                         width, height, depth, border, format, type,
1570                         cleared_rect);
1571   texture->GetMemTracker()->TrackMemAlloc(texture->estimated_size());
1572 }
1573
1574 Texture* TextureManager::Produce(TextureRef* ref) {
1575   DCHECK(ref);
1576   return ref->texture();
1577 }
1578
1579 TextureRef* TextureManager::Consume(
1580     GLuint client_id,
1581     Texture* texture) {
1582   DCHECK(client_id);
1583   scoped_refptr<TextureRef> ref(new TextureRef(this, client_id, texture));
1584   bool result = textures_.insert(std::make_pair(client_id, ref)).second;
1585   DCHECK(result);
1586   return ref.get();
1587 }
1588
1589 void TextureManager::SetParameteri(
1590     const char* function_name, ErrorState* error_state,
1591     TextureRef* ref, GLenum pname, GLint param) {
1592   DCHECK(error_state);
1593   DCHECK(ref);
1594   Texture* texture = ref->texture();
1595   GLenum result = texture->SetParameteri(feature_info_.get(), pname, param);
1596   if (result != GL_NO_ERROR) {
1597     if (result == GL_INVALID_ENUM) {
1598       ERRORSTATE_SET_GL_ERROR_INVALID_ENUM(
1599           error_state, function_name, param, "param");
1600     } else {
1601       ERRORSTATE_SET_GL_ERROR_INVALID_PARAMI(
1602           error_state, result, function_name, pname, param);
1603     }
1604   } else {
1605     // Texture tracking pools exist only for the command decoder, so
1606     // do not pass them on to the native GL implementation.
1607     if (pname != GL_TEXTURE_POOL_CHROMIUM) {
1608       glTexParameteri(texture->target(), pname, param);
1609     }
1610   }
1611 }
1612
1613 void TextureManager::SetParameterf(
1614     const char* function_name, ErrorState* error_state,
1615     TextureRef* ref, GLenum pname, GLfloat param) {
1616   DCHECK(error_state);
1617   DCHECK(ref);
1618   Texture* texture = ref->texture();
1619   GLenum result = texture->SetParameterf(feature_info_.get(), pname, param);
1620   if (result != GL_NO_ERROR) {
1621     if (result == GL_INVALID_ENUM) {
1622       ERRORSTATE_SET_GL_ERROR_INVALID_ENUM(
1623           error_state, function_name, pname, "pname");
1624     } else {
1625       ERRORSTATE_SET_GL_ERROR_INVALID_PARAMF(
1626           error_state, result, function_name, pname, param);
1627     }
1628   } else {
1629     // Texture tracking pools exist only for the command decoder, so
1630     // do not pass them on to the native GL implementation.
1631     if (pname != GL_TEXTURE_POOL_CHROMIUM) {
1632       glTexParameterf(texture->target(), pname, param);
1633     }
1634   }
1635 }
1636
1637 bool TextureManager::MarkMipmapsGenerated(TextureRef* ref) {
1638   DCHECK(ref);
1639   Texture* texture = ref->texture();
1640   texture->GetMemTracker()->TrackMemFree(texture->estimated_size());
1641   bool result = texture->MarkMipmapsGenerated(feature_info_.get());
1642   texture->GetMemTracker()->TrackMemAlloc(texture->estimated_size());
1643   return result;
1644 }
1645
1646 TextureRef* TextureManager::CreateTexture(
1647     GLuint client_id, GLuint service_id) {
1648   DCHECK_NE(0u, service_id);
1649   scoped_refptr<TextureRef> ref(TextureRef::Create(
1650       this, client_id, service_id));
1651   std::pair<TextureMap::iterator, bool> result =
1652       textures_.insert(std::make_pair(client_id, ref));
1653   DCHECK(result.second);
1654   return ref.get();
1655 }
1656
1657 TextureRef* TextureManager::GetTexture(
1658     GLuint client_id) const {
1659   TextureMap::const_iterator it = textures_.find(client_id);
1660   return it != textures_.end() ? it->second.get() : NULL;
1661 }
1662
1663 void TextureManager::RemoveTexture(GLuint client_id) {
1664   TextureMap::iterator it = textures_.find(client_id);
1665   if (it != textures_.end()) {
1666     it->second->reset_client_id();
1667     textures_.erase(it);
1668   }
1669 }
1670
1671 void TextureManager::StartTracking(TextureRef* ref) {
1672   Texture* texture = ref->texture();
1673   ++texture_count_;
1674   num_uncleared_mips_ += texture->num_uncleared_mips();
1675   if (!texture->SafeToRenderFrom())
1676     ++num_unsafe_textures_;
1677   if (!texture->CanRender(feature_info_.get()))
1678     ++num_unrenderable_textures_;
1679   if (texture->HasImages())
1680     ++num_images_;
1681 }
1682
1683 void TextureManager::StopTracking(TextureRef* ref) {
1684   if (ref->num_observers()) {
1685     for (unsigned int i = 0; i < destruction_observers_.size(); i++) {
1686       destruction_observers_[i]->OnTextureRefDestroying(ref);
1687     }
1688     DCHECK_EQ(ref->num_observers(), 0);
1689   }
1690
1691   Texture* texture = ref->texture();
1692
1693   --texture_count_;
1694   if (texture->HasImages()) {
1695     DCHECK_NE(0, num_images_);
1696     --num_images_;
1697   }
1698   if (!texture->CanRender(feature_info_.get())) {
1699     DCHECK_NE(0, num_unrenderable_textures_);
1700     --num_unrenderable_textures_;
1701   }
1702   if (!texture->SafeToRenderFrom()) {
1703     DCHECK_NE(0, num_unsafe_textures_);
1704     --num_unsafe_textures_;
1705   }
1706   num_uncleared_mips_ -= texture->num_uncleared_mips();
1707   DCHECK_GE(num_uncleared_mips_, 0);
1708 }
1709
1710 MemoryTypeTracker* TextureManager::GetMemTracker(GLenum tracking_pool) {
1711   switch (tracking_pool) {
1712     case GL_TEXTURE_POOL_MANAGED_CHROMIUM:
1713       return memory_tracker_managed_.get();
1714       break;
1715     case GL_TEXTURE_POOL_UNMANAGED_CHROMIUM:
1716       return memory_tracker_unmanaged_.get();
1717       break;
1718     default:
1719       break;
1720   }
1721   NOTREACHED();
1722   return NULL;
1723 }
1724
1725 Texture* TextureManager::GetTextureForServiceId(GLuint service_id) const {
1726   // This doesn't need to be fast. It's only used during slow queries.
1727   for (TextureMap::const_iterator it = textures_.begin();
1728        it != textures_.end(); ++it) {
1729     Texture* texture = it->second->texture();
1730     if (texture->service_id() == service_id)
1731       return texture;
1732   }
1733   return NULL;
1734 }
1735
1736 GLsizei TextureManager::ComputeMipMapCount(GLenum target,
1737                                            GLsizei width,
1738                                            GLsizei height,
1739                                            GLsizei depth) {
1740   switch (target) {
1741     case GL_TEXTURE_EXTERNAL_OES:
1742       return 1;
1743     default:
1744       return 1 +
1745              base::bits::Log2Floor(std::max(std::max(width, height), depth));
1746   }
1747 }
1748
1749 void TextureManager::SetLevelImage(
1750     TextureRef* ref,
1751     GLenum target,
1752     GLint level,
1753     gfx::GLImage* image) {
1754   DCHECK(ref);
1755   ref->texture()->SetLevelImage(feature_info_.get(), target, level, image);
1756 }
1757
1758 size_t TextureManager::GetSignatureSize() const {
1759   return sizeof(TextureTag) + sizeof(TextureSignature);
1760 }
1761
1762 void TextureManager::AddToSignature(
1763     TextureRef* ref,
1764     GLenum target,
1765     GLint level,
1766     std::string* signature) const {
1767   ref->texture()->AddToSignature(feature_info_.get(), target, level, signature);
1768 }
1769
1770 void TextureManager::UpdateSafeToRenderFrom(int delta) {
1771   num_unsafe_textures_ += delta;
1772   DCHECK_GE(num_unsafe_textures_, 0);
1773 }
1774
1775 void TextureManager::UpdateUnclearedMips(int delta) {
1776   num_uncleared_mips_ += delta;
1777   DCHECK_GE(num_uncleared_mips_, 0);
1778 }
1779
1780 void TextureManager::UpdateCanRenderCondition(
1781     Texture::CanRenderCondition old_condition,
1782     Texture::CanRenderCondition new_condition) {
1783   if (old_condition == Texture::CAN_RENDER_NEVER ||
1784       (old_condition == Texture::CAN_RENDER_ONLY_IF_NPOT &&
1785        !feature_info_->feature_flags().npot_ok)) {
1786     DCHECK_GT(num_unrenderable_textures_, 0);
1787     --num_unrenderable_textures_;
1788   }
1789   if (new_condition == Texture::CAN_RENDER_NEVER ||
1790       (new_condition == Texture::CAN_RENDER_ONLY_IF_NPOT &&
1791        !feature_info_->feature_flags().npot_ok))
1792     ++num_unrenderable_textures_;
1793 }
1794
1795 void TextureManager::UpdateNumImages(int delta) {
1796   num_images_ += delta;
1797   DCHECK_GE(num_images_, 0);
1798 }
1799
1800 void TextureManager::IncFramebufferStateChangeCount() {
1801   if (framebuffer_manager_)
1802     framebuffer_manager_->IncFramebufferStateChangeCount();
1803 }
1804
1805 bool TextureManager::ValidateFormatAndTypeCombination(
1806     ErrorState* error_state, const char* function_name, GLenum format,
1807     GLenum type) {
1808   // TODO(zmo): now this is only called by GLES2DecoderImpl::DoCopyTexImage2D
1809   // and is incorrect for ES3. Fix this.
1810   if (!g_format_type_validator.Get().IsValid(format, format, type)) {
1811     ERRORSTATE_SET_GL_ERROR(
1812         error_state, GL_INVALID_OPERATION, function_name,
1813         (std::string("invalid type ") +
1814          GLES2Util::GetStringEnum(type) + " for format " +
1815          GLES2Util::GetStringEnum(format)).c_str());
1816     return false;
1817   }
1818   return true;
1819 }
1820
1821 bool TextureManager::ValidateTextureParameters(
1822     ErrorState* error_state, const char* function_name,
1823     GLenum format, GLenum type, GLenum internal_format, GLint level) {
1824   const Validators* validators = feature_info_->validators();
1825   if (!validators->texture_format.IsValid(format)) {
1826     ERRORSTATE_SET_GL_ERROR_INVALID_ENUM(
1827         error_state, function_name, format, "format");
1828     return false;
1829   }
1830   if (!validators->pixel_type.IsValid(type)) {
1831     ERRORSTATE_SET_GL_ERROR_INVALID_ENUM(
1832         error_state, function_name, type, "type");
1833     return false;
1834   }
1835   if (!g_format_type_validator.Get().IsValid(internal_format, format, type)) {
1836     ERRORSTATE_SET_GL_ERROR(
1837         error_state, GL_INVALID_OPERATION, function_name,
1838         "invalid internalformat/format/type combination");
1839     return false;
1840   }
1841   // For TexSubImage calls, internal_format isn't part of the parameters,
1842   // so its validation needs to be after the internal_format/format/type
1843   // combination validation. Otherwise, an unexpected INVALID_ENUM could be
1844   // generated instead of INVALID_OPERATION.
1845   if (!validators->texture_internal_format.IsValid(internal_format)) {
1846     ERRORSTATE_SET_GL_ERROR_INVALID_ENUM(
1847         error_state, function_name, internal_format, "internal_format");
1848     return false;
1849   }
1850   if (!feature_info_->IsES3Enabled()) {
1851     uint32 channels = GLES2Util::GetChannelsForFormat(format);
1852     if ((channels & (GLES2Util::kDepth | GLES2Util::kStencil)) != 0 && level) {
1853       ERRORSTATE_SET_GL_ERROR(
1854           error_state, GL_INVALID_OPERATION, function_name,
1855           (std::string("invalid format ") + GLES2Util::GetStringEnum(format) +
1856            " for level != 0").c_str());
1857       return false;
1858     }
1859   }
1860   return true;
1861 }
1862
1863 // Gets the texture id for a given target.
1864 TextureRef* TextureManager::GetTextureInfoForTarget(
1865     ContextState* state, GLenum target) {
1866   TextureUnit& unit = state->texture_units[state->active_texture_unit];
1867   TextureRef* texture = NULL;
1868   switch (target) {
1869     case GL_TEXTURE_2D:
1870       texture = unit.bound_texture_2d.get();
1871       break;
1872     case GL_TEXTURE_CUBE_MAP:
1873     case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
1874     case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
1875     case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
1876     case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
1877     case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
1878     case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
1879       texture = unit.bound_texture_cube_map.get();
1880       break;
1881     case GL_TEXTURE_EXTERNAL_OES:
1882       texture = unit.bound_texture_external_oes.get();
1883       break;
1884     case GL_TEXTURE_RECTANGLE_ARB:
1885       texture = unit.bound_texture_rectangle_arb.get();
1886       break;
1887     case GL_TEXTURE_3D:
1888       texture = unit.bound_texture_3d.get();
1889       break;
1890     case GL_TEXTURE_2D_ARRAY:
1891       texture = unit.bound_texture_2d_array.get();
1892       break;
1893     default:
1894       NOTREACHED();
1895       return NULL;
1896   }
1897   return texture;
1898 }
1899
1900 TextureRef* TextureManager::GetTextureInfoForTargetUnlessDefault(
1901     ContextState* state, GLenum target) {
1902   TextureRef* texture = GetTextureInfoForTarget(state, target);
1903   if (!texture)
1904     return NULL;
1905   if (texture == GetDefaultTextureInfo(target))
1906     return NULL;
1907   return texture;
1908 }
1909
1910 bool TextureManager::ValidateTexImage(
1911     ContextState* state,
1912     const char* function_name,
1913     const DoTexImageArguments& args,
1914     TextureRef** texture_ref) {
1915   ErrorState* error_state = state->GetErrorState();
1916   const Validators* validators = feature_info_->validators();
1917   if (((args.command_type == DoTexImageArguments::kTexImage2D) &&
1918        !validators->texture_target.IsValid(args.target)) ||
1919       ((args.command_type == DoTexImageArguments::kTexImage3D) &&
1920        !validators->texture_3_d_target.IsValid(args.target))) {
1921     ERRORSTATE_SET_GL_ERROR_INVALID_ENUM(
1922         error_state, function_name, args.target, "target");
1923     return false;
1924   }
1925   if (!ValidateTextureParameters(
1926       error_state, function_name, args.format, args.type,
1927       args.internal_format, args.level)) {
1928     return false;
1929   }
1930   if (!ValidForTarget(args.target, args.level,
1931                       args.width, args.height, args.depth) ||
1932       args.border != 0) {
1933     ERRORSTATE_SET_GL_ERROR(
1934         error_state, GL_INVALID_VALUE, function_name,
1935         "dimensions out of range");
1936     return false;
1937   }
1938   if ((GLES2Util::GetChannelsForFormat(args.format) &
1939        (GLES2Util::kDepth | GLES2Util::kStencil)) != 0 && args.pixels
1940       && !feature_info_->IsES3Enabled()) {
1941     ERRORSTATE_SET_GL_ERROR(
1942         error_state, GL_INVALID_OPERATION,
1943         function_name, "can not supply data for depth or stencil textures");
1944     return false;
1945   }
1946
1947   TextureRef* local_texture_ref = GetTextureInfoForTarget(state, args.target);
1948   if (!local_texture_ref) {
1949     ERRORSTATE_SET_GL_ERROR(
1950         error_state, GL_INVALID_OPERATION, function_name,
1951         "unknown texture for target");
1952     return false;
1953   }
1954   if (local_texture_ref->texture()->IsImmutable()) {
1955     ERRORSTATE_SET_GL_ERROR(
1956         error_state, GL_INVALID_OPERATION, function_name,
1957         "texture is immutable");
1958     return false;
1959   }
1960
1961   if (!memory_tracker_managed_->EnsureGPUMemoryAvailable(args.pixels_size)) {
1962     ERRORSTATE_SET_GL_ERROR(error_state, GL_OUT_OF_MEMORY, function_name,
1963                             "out of memory");
1964     return false;
1965   }
1966
1967   // Write the TextureReference since this is valid.
1968   *texture_ref = local_texture_ref;
1969   return true;
1970 }
1971
1972 void TextureManager::ValidateAndDoTexImage(
1973     DecoderTextureState* texture_state,
1974     ContextState* state,
1975     DecoderFramebufferState* framebuffer_state,
1976     const char* function_name,
1977     const DoTexImageArguments& args) {
1978   TextureRef* texture_ref;
1979   if (!ValidateTexImage(state, function_name, args, &texture_ref)) {
1980     return;
1981   }
1982
1983   // ValidateTexImage is passed already.
1984   Texture* texture = texture_ref->texture();
1985   bool need_cube_map_workaround =
1986       texture->target() == GL_TEXTURE_CUBE_MAP &&
1987       (texture_state->force_cube_complete ||
1988        (texture_state->force_cube_map_positive_x_allocation &&
1989         args.target != GL_TEXTURE_CUBE_MAP_POSITIVE_X));
1990   if (need_cube_map_workaround) {
1991     std::vector<GLenum> undefined_faces;
1992     if (texture_state->force_cube_complete) {
1993       int width = 0;
1994       int height = 0;
1995       for (unsigned i = 0; i < 6; i++) {
1996         bool defined =
1997             texture->GetLevelSize(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i,
1998                                   args.level, &width, &height, nullptr);
1999         if (!defined || GL_TEXTURE_CUBE_MAP_POSITIVE_X + i == args.target)
2000           undefined_faces.push_back(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i);
2001       }
2002     } else if (texture_state->force_cube_map_positive_x_allocation &&
2003                args.target != GL_TEXTURE_CUBE_MAP_POSITIVE_X) {
2004       int width = 0;
2005       int height = 0;
2006       if (!texture->GetLevelSize(GL_TEXTURE_CUBE_MAP_POSITIVE_X, args.level,
2007                                  &width, &height, nullptr)) {
2008         undefined_faces.push_back(GL_TEXTURE_CUBE_MAP_POSITIVE_X);
2009       }
2010       undefined_faces.push_back(args.target);
2011     }
2012
2013     DCHECK(undefined_faces.size());
2014     if (!memory_tracker_managed_->EnsureGPUMemoryAvailable(
2015             undefined_faces.size() * args.pixels_size)) {
2016       ERRORSTATE_SET_GL_ERROR(state->GetErrorState(), GL_OUT_OF_MEMORY,
2017                               function_name, "out of memory");
2018       return;
2019     }
2020     DoTexImageArguments new_args = args;
2021     scoped_ptr<char[]> zero(new char[args.pixels_size]);
2022     memset(zero.get(), 0, args.pixels_size);
2023     for (GLenum face : undefined_faces) {
2024       new_args.target = face;
2025       if (face == args.target) {
2026         new_args.pixels = args.pixels;
2027       } else {
2028         new_args.pixels = zero.get();
2029       }
2030       DoTexImage(texture_state, state->GetErrorState(), framebuffer_state,
2031                  function_name, texture_ref, new_args);
2032     }
2033     return;
2034   }
2035
2036   DoTexImage(texture_state, state->GetErrorState(), framebuffer_state,
2037              function_name, texture_ref, args);
2038 }
2039
2040 GLenum TextureManager::AdjustTexFormat(GLenum format) const {
2041   // TODO(bajones): GLES 3 allows for internal format and format to differ.
2042   // This logic may need to change as a result.
2043   if (gfx::GetGLImplementation() == gfx::kGLImplementationDesktopGL) {
2044     if (format == GL_SRGB_EXT)
2045       return GL_RGB;
2046     if (format == GL_SRGB_ALPHA_EXT)
2047       return GL_RGBA;
2048   }
2049   return format;
2050 }
2051
2052 void TextureManager::DoTexImage(
2053     DecoderTextureState* texture_state,
2054     ErrorState* error_state,
2055     DecoderFramebufferState* framebuffer_state,
2056     const char* function_name,
2057     TextureRef* texture_ref,
2058     const DoTexImageArguments& args) {
2059   Texture* texture = texture_ref->texture();
2060   GLsizei tex_width = 0;
2061   GLsizei tex_height = 0;
2062   GLsizei tex_depth = 0;
2063   GLenum tex_type = 0;
2064   GLenum tex_format = 0;
2065   bool level_is_same =
2066       texture->GetLevelSize(
2067           args.target, args.level, &tex_width, &tex_height, &tex_depth) &&
2068       texture->GetLevelType(args.target, args.level, &tex_type, &tex_format) &&
2069       args.width == tex_width && args.height == tex_height &&
2070       args.depth == tex_depth && args.type == tex_type &&
2071       args.format == tex_format;
2072
2073   if (level_is_same && !args.pixels) {
2074     // Just set the level texture but mark the texture as uncleared.
2075     SetLevelInfo(texture_ref, args.target, args.level, args.internal_format,
2076                  args.width, args.height, args.depth, args.border, args.format,
2077                  args.type, gfx::Rect());
2078     texture_state->tex_image_failed = false;
2079     return;
2080   }
2081
2082   if (texture->IsAttachedToFramebuffer()) {
2083     framebuffer_state->clear_state_dirty = true;
2084   }
2085
2086   if (texture_state->texsubimage_faster_than_teximage &&
2087       level_is_same && args.pixels) {
2088     {
2089       ScopedTextureUploadTimer timer(texture_state);
2090       if (args.command_type == DoTexImageArguments::kTexImage3D) {
2091         glTexSubImage3D(args.target, args.level, 0, 0, 0,
2092                         args.width, args.height, args.depth,
2093                         args.format, args.type, args.pixels);
2094       } else {
2095         glTexSubImage2D(args.target, args.level, 0, 0, args.width, args.height,
2096                         AdjustTexFormat(args.format), args.type, args.pixels);
2097       }
2098     }
2099     SetLevelCleared(texture_ref, args.target, args.level, true);
2100     texture_state->tex_image_failed = false;
2101     return;
2102   }
2103
2104   ERRORSTATE_COPY_REAL_GL_ERRORS_TO_WRAPPER(error_state, function_name);
2105   {
2106     ScopedTextureUploadTimer timer(texture_state);
2107     if (args.command_type == DoTexImageArguments::kTexImage3D) {
2108       glTexImage3D(args.target, args.level, args.internal_format, args.width,
2109                    args.height, args.depth, args.border, args.format,
2110                    args.type, args.pixels);
2111     } else {
2112       glTexImage2D(args.target, args.level, args.internal_format, args.width,
2113                    args.height, args.border, AdjustTexFormat(args.format),
2114                    args.type, args.pixels);
2115     }
2116   }
2117   GLenum error = ERRORSTATE_PEEK_GL_ERROR(error_state, function_name);
2118   if (error == GL_NO_ERROR) {
2119     SetLevelInfo(
2120         texture_ref, args.target, args.level, args.internal_format, args.width,
2121         args.height, args.depth, args.border, args.format, args.type,
2122         args.pixels != NULL ? gfx::Rect(args.width, args.height) : gfx::Rect());
2123     texture_state->tex_image_failed = false;
2124   }
2125 }
2126
2127 ScopedTextureUploadTimer::ScopedTextureUploadTimer(
2128     DecoderTextureState* texture_state)
2129     : texture_state_(texture_state),
2130       begin_time_(base::TimeTicks::Now()) {
2131 }
2132
2133 ScopedTextureUploadTimer::~ScopedTextureUploadTimer() {
2134   texture_state_->texture_upload_count++;
2135   texture_state_->total_texture_upload_time +=
2136       base::TimeTicks::Now() - begin_time_;
2137 }
2138
2139 bool TextureManager::OnMemoryDump(const base::trace_event::MemoryDumpArgs& args,
2140                                   base::trace_event::ProcessMemoryDump* pmd) {
2141   for (const auto& resource : textures_) {
2142     // Only dump memory info for textures actually owned by this TextureManager.
2143     DumpTextureRef(pmd, resource.second.get());
2144   }
2145
2146   // Also dump TextureManager internal textures, if allocated.
2147   for (int i = 0; i < kNumDefaultTextures; i++) {
2148     if (default_textures_[i]) {
2149       DumpTextureRef(pmd, default_textures_[i].get());
2150     }
2151   }
2152
2153   return true;
2154 }
2155
2156 void TextureManager::DumpTextureRef(base::trace_event::ProcessMemoryDump* pmd,
2157                                     TextureRef* ref) {
2158   uint32_t size = ref->texture()->estimated_size();
2159
2160   // Ignore unallocated texture IDs.
2161   if (size == 0)
2162     return;
2163
2164   std::string dump_name =
2165       base::StringPrintf("gpu/gl/textures/client_%d/texture_%d",
2166                          memory_tracker_->ClientId(), ref->client_id());
2167
2168   base::trace_event::MemoryAllocatorDump* dump =
2169       pmd->CreateAllocatorDump(dump_name);
2170   dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize,
2171                   base::trace_event::MemoryAllocatorDump::kUnitsBytes,
2172                   static_cast<uint64_t>(size));
2173
2174   // Add the |client_guid| which expresses shared ownership with the client
2175   // process.
2176   auto client_guid = gfx::GetGLTextureGUIDForTracing(
2177       memory_tracker_->ClientTracingId(), ref->client_id());
2178   pmd->CreateSharedGlobalAllocatorDump(client_guid);
2179   pmd->AddOwnershipEdge(dump->guid(), client_guid);
2180
2181   // Add a |service_guid| which expresses shared ownership between the various
2182   // |client_guid|s.
2183   // TODO(ericrk): May need to ensure uniqueness using GLShareGroup and
2184   // potentially cross-share-group sharing via EGLImages. crbug.com/512534
2185   auto service_guid =
2186       gfx::GetGLTextureGUIDForTracing(0, ref->texture()->service_id());
2187   pmd->CreateSharedGlobalAllocatorDump(service_guid);
2188
2189   int importance = 0;  // Default importance.
2190   // The link to the memory tracking |client_id| is given a higher importance
2191   // than other refs.
2192   if (ref == ref->texture()->memory_tracking_ref_)
2193     importance = 2;
2194
2195   pmd->AddOwnershipEdge(client_guid, service_guid, importance);
2196
2197   // Dump all sub-levels held by the texture. They will appear below the main
2198   // gl/textures/client_X/texture_Y dump.
2199   ref->texture()->DumpLevelMemory(pmd, memory_tracker_->ClientTracingId(),
2200                                   dump_name);
2201 }
2202
2203 }  // namespace gles2
2204 }  // namespace gpu