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     if (target_ == GL_TEXTURE_CUBE_MAP && !cube_complete())
 447       return CAN_RENDER_NEVER;
 448   }
 449
 450   bool is_npot_compatible = !needs_mips &&
 451       wrap_s_ == GL_CLAMP_TO_EDGE &&
 452       wrap_t_ == GL_CLAMP_TO_EDGE;
 453
 454   if (!is_npot_compatible) {
 455     if (target_ == GL_TEXTURE_RECTANGLE_ARB)
 456       return CAN_RENDER_NEVER;
 457     else if (npot())
 458       return CAN_RENDER_ONLY_IF_NPOT;
 459   }
 460
 461   return CAN_RENDER_ALWAYS;
 462 }
 463
 464 bool Texture::CanRender(const FeatureInfo* feature_info) const {
 465   switch (can_render_condition_) {
 466     case CAN_RENDER_ALWAYS:
 467       return true;
 468     case CAN_RENDER_NEVER:
 469       return false;
 470     case CAN_RENDER_ONLY_IF_NPOT:
 471       break;
 472   }
 473   return feature_info->feature_flags().npot_ok;
 474 }
 475
 476 void Texture::AddToSignature(
 477     const FeatureInfo* feature_info,
 478     GLenum target,
 479     GLint level,
 480     std::string* signature) const {
 481   DCHECK(feature_info);
 482   DCHECK(signature);
 483   DCHECK_GE(level, 0);
 484   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
 485   DCHECK_LT(static_cast<size_t>(face_index),
 486             face_infos_.size());
 487   DCHECK_LT(static_cast<size_t>(level),
 488             face_infos_[face_index].level_infos.size());
 489
 490   const Texture::LevelInfo& info =
 491       face_infos_[face_index].level_infos[level];
 492
 493   TextureSignature signature_data(target,
 494                                   level,
 495                                   min_filter_,
 496                                   mag_filter_,
 497                                   wrap_r_,
 498                                   wrap_s_,
 499                                   wrap_t_,
 500                                   usage_,
 501                                   info.internal_format,
 502                                   compare_func_,
 503                                   compare_mode_,
 504                                   info.width,
 505                                   info.height,
 506                                   info.depth,
 507                                   max_lod_,
 508                                   min_lod_,
 509                                   base_level_,
 510                                   info.border,
 511                                   max_level_,
 512                                   info.format,
 513                                   info.type,
 514                                   info.image.get() != NULL,
 515                                   CanRender(feature_info),
 516                                   CanRenderTo(),
 517                                   npot_);
 518
 519   signature->append(TextureTag, sizeof(TextureTag));
 520   signature->append(reinterpret_cast<const char*>(&signature_data),
 521                     sizeof(signature_data));
 522 }
 523
 524 void Texture::SetMailboxManager(MailboxManager* mailbox_manager) {
 525   DCHECK(!mailbox_manager_ || mailbox_manager_ == mailbox_manager);
 526   mailbox_manager_ = mailbox_manager;
 527 }
 528
 529 bool Texture::MarkMipmapsGenerated(
 530     const FeatureInfo* feature_info) {
 531   if (!CanGenerateMipmaps(feature_info)) {
 532     return false;
 533   }
 534   for (size_t ii = 0; ii < face_infos_.size(); ++ii) {
 535     const Texture::FaceInfo& face_info = face_infos_[ii];
 536     const Texture::LevelInfo& level0_info = face_info.level_infos[0];
 537     GLsizei width = level0_info.width;
 538     GLsizei height = level0_info.height;
 539     GLsizei depth = level0_info.depth;
 540     GLenum target = target_ == GL_TEXTURE_2D ? GL_TEXTURE_2D :
 541                                GLES2Util::IndexToGLFaceTarget(ii);
 542
 543     const GLsizei num_mips = face_info.num_mip_levels;
 544     for (GLsizei level = 1; level < num_mips; ++level) {
 545       width = std::max(1, width >> 1);
 546       height = std::max(1, height >> 1);
 547       depth = std::max(1, depth >> 1);
 548       SetLevelInfo(feature_info, target, level, level0_info.internal_format,
 549                    width, height, depth, level0_info.border, level0_info.format,
 550                    level0_info.type, gfx::Rect(width, height));
 551     }
 552   }
 553
 554   return true;
 555 }
 556
 557 void Texture::SetTarget(
 558     const FeatureInfo* feature_info, GLenum target, GLint max_levels) {
 559   DCHECK_EQ(0u, target_);  // you can only set this once.
 560   target_ = target;
 561   size_t num_faces = (target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
 562   face_infos_.resize(num_faces);
 563   for (size_t ii = 0; ii < num_faces; ++ii) {
 564     face_infos_[ii].level_infos.resize(max_levels);
 565   }
 566
 567   if (target == GL_TEXTURE_EXTERNAL_OES || target == GL_TEXTURE_RECTANGLE_ARB) {
 568     min_filter_ = GL_LINEAR;
 569     wrap_s_ = wrap_t_ = GL_CLAMP_TO_EDGE;
 570   }
 571
 572   if (target == GL_TEXTURE_EXTERNAL_OES) {
 573     immutable_ = true;
 574   }
 575   Update(feature_info);
 576   UpdateCanRenderCondition();
 577 }
 578
 579 bool Texture::CanGenerateMipmaps(
 580     const FeatureInfo* feature_info) const {
 581   if ((npot() && !feature_info->feature_flags().npot_ok) ||
 582       face_infos_.empty() ||
 583       target_ == GL_TEXTURE_EXTERNAL_OES ||
 584       target_ == GL_TEXTURE_RECTANGLE_ARB) {
 585     return false;
 586   }
 587
 588   // Can't generate mips for depth or stencil textures.
 589   const Texture::LevelInfo& first = face_infos_[0].level_infos[0];
 590   uint32 channels = GLES2Util::GetChannelsForFormat(first.format);
 591   if (channels & (GLES2Util::kDepth | GLES2Util::kStencil)) {
 592     return false;
 593   }
 594
 595   // TODO(gman): Check internal_format, format and type.
 596   for (size_t ii = 0; ii < face_infos_.size(); ++ii) {
 597     const LevelInfo& info = face_infos_[ii].level_infos[0];
 598     if ((info.target == 0) || (info.width != first.width) ||
 599         (info.height != first.height) || (info.depth != 1) ||
 600         (info.format != first.format) ||
 601         (info.internal_format != first.internal_format) ||
 602         (info.type != first.type) ||
 603         feature_info->validators()->compressed_texture_format.IsValid(
 604             info.internal_format) ||
 605         info.image.get()) {
 606       return false;
 607     }
 608   }
 609   return true;
 610 }
 611
 612 bool Texture::TextureIsNPOT(GLsizei width,
 613                             GLsizei height,
 614                             GLsizei depth) {
 615   return (GLES2Util::IsNPOT(width) ||
 616           GLES2Util::IsNPOT(height) ||
 617           GLES2Util::IsNPOT(depth));
 618 }
 619
 620 bool Texture::TextureFaceComplete(const Texture::LevelInfo& first_face,
 621                                   size_t face_index,
 622                                   GLenum target,
 623                                   GLenum internal_format,
 624                                   GLsizei width,
 625                                   GLsizei height,
 626                                   GLsizei depth,
 627                                   GLenum format,
 628                                   GLenum type) {
 629   bool complete = (target != 0 && depth == 1);
 630   if (face_index != 0) {
 631     complete &= (width == first_face.width &&
 632                  height == first_face.height &&
 633                  internal_format == first_face.internal_format &&
 634                  format == first_face.format &&
 635                  type == first_face.type);
 636   }
 637   return complete;
 638 }
 639
 640 bool Texture::TextureMipComplete(const Texture::LevelInfo& level0_face,
 641                                  GLenum target,
 642                                  GLint level,
 643                                  GLenum internal_format,
 644                                  GLsizei width,
 645                                  GLsizei height,
 646                                  GLsizei depth,
 647                                  GLenum format,
 648                                  GLenum type) {
 649   bool complete = (target != 0);
 650   if (level != 0) {
 651     const GLsizei mip_width = std::max(1, level0_face.width >> level);
 652     const GLsizei mip_height = std::max(1, level0_face.height >> level);
 653     const GLsizei mip_depth = std::max(1, level0_face.depth >> level);
 654
 655     complete &= (width == mip_width &&
 656                  height == mip_height &&
 657                  depth == mip_depth &&
 658                  internal_format == level0_face.internal_format &&
 659                  format == level0_face.format &&
 660                  type == level0_face.type);
 661   }
 662   return complete;
 663 }
 664
 665 void Texture::SetLevelClearedRect(GLenum target,
 666                                   GLint level,
 667                                   const gfx::Rect& cleared_rect) {
 668   DCHECK_GE(level, 0);
 669   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
 670   DCHECK_LT(static_cast<size_t>(face_index),
 671             face_infos_.size());
 672   DCHECK_LT(static_cast<size_t>(level),
 673             face_infos_[face_index].level_infos.size());
 674   Texture::LevelInfo& info =
 675       face_infos_[face_index].level_infos[level];
 676   UpdateMipCleared(&info, info.width, info.height, cleared_rect);
 677   UpdateCleared();
 678 }
 679
 680 void Texture::SetLevelCleared(GLenum target, GLint level, bool cleared) {
 681   DCHECK_GE(level, 0);
 682   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
 683   DCHECK_LT(static_cast<size_t>(face_index), face_infos_.size());
 684   DCHECK_LT(static_cast<size_t>(level),
 685             face_infos_[face_index].level_infos.size());
 686   Texture::LevelInfo& info = face_infos_[face_index].level_infos[level];
 687   UpdateMipCleared(&info, info.width, info.height,
 688                    cleared ? gfx::Rect(info.width, info.height) : gfx::Rect());
 689   UpdateCleared();
 690 }
 691
 692 void Texture::UpdateCleared() {
 693   if (face_infos_.empty()) {
 694     return;
 695   }
 696
 697   const bool cleared = (num_uncleared_mips_ == 0);
 698
 699   // If texture is uncleared and is attached to a framebuffer,
 700   // that framebuffer must be marked possibly incomplete.
 701   if (!cleared && IsAttachedToFramebuffer()) {
 702     IncAllFramebufferStateChangeCount();
 703   }
 704
 705   UpdateSafeToRenderFrom(cleared);
 706 }
 707
 708 void Texture::UpdateSafeToRenderFrom(bool cleared) {
 709   if (cleared_ == cleared)
 710     return;
 711   cleared_ = cleared;
 712   int delta = cleared ? -1 : +1;
 713   for (RefSet::iterator it = refs_.begin(); it != refs_.end(); ++it)
 714     (*it)->manager()->UpdateSafeToRenderFrom(delta);
 715 }
 716
 717 void Texture::UpdateMipCleared(LevelInfo* info,
 718                                GLsizei width,
 719                                GLsizei height,
 720                                const gfx::Rect& cleared_rect) {
 721   bool was_cleared = info->cleared_rect == gfx::Rect(info->width, info->height);
 722   info->width = width;
 723   info->height = height;
 724   info->cleared_rect = cleared_rect;
 725   bool cleared = info->cleared_rect == gfx::Rect(info->width, info->height);
 726   if (cleared == was_cleared)
 727     return;
 728   int delta = cleared ? -1 : +1;
 729   num_uncleared_mips_ += delta;
 730   for (RefSet::iterator it = refs_.begin(); it != refs_.end(); ++it)
 731     (*it)->manager()->UpdateUnclearedMips(delta);
 732 }
 733
 734 void Texture::UpdateCanRenderCondition() {
 735   CanRenderCondition can_render_condition = GetCanRenderCondition();
 736   if (can_render_condition_ == can_render_condition)
 737     return;
 738   for (RefSet::iterator it = refs_.begin(); it != refs_.end(); ++it)
 739     (*it)->manager()->UpdateCanRenderCondition(can_render_condition_,
 740                                                can_render_condition);
 741   can_render_condition_ = can_render_condition;
 742 }
 743
 744 void Texture::UpdateHasImages() {
 745   if (face_infos_.empty())
 746     return;
 747
 748   bool has_images = false;
 749   for (size_t ii = 0; ii < face_infos_.size(); ++ii) {
 750     for (size_t jj = 0; jj < face_infos_[ii].level_infos.size(); ++jj) {
 751       const Texture::LevelInfo& info = face_infos_[ii].level_infos[jj];
 752       if (info.image.get() != NULL) {
 753         has_images = true;
 754         break;
 755       }
 756     }
 757   }
 758
 759   if (has_images_ == has_images)
 760     return;
 761   has_images_ = has_images;
 762   int delta = has_images ? +1 : -1;
 763   for (RefSet::iterator it = refs_.begin(); it != refs_.end(); ++it)
 764     (*it)->manager()->UpdateNumImages(delta);
 765 }
 766
 767 void Texture::IncAllFramebufferStateChangeCount() {
 768   for (RefSet::iterator it = refs_.begin(); it != refs_.end(); ++it)
 769     (*it)->manager()->IncFramebufferStateChangeCount();
 770 }
 771
 772 void Texture::SetLevelInfo(const FeatureInfo* feature_info,
 773                            GLenum target,
 774                            GLint level,
 775                            GLenum internal_format,
 776                            GLsizei width,
 777                            GLsizei height,
 778                            GLsizei depth,
 779                            GLint border,
 780                            GLenum format,
 781                            GLenum type,
 782                            const gfx::Rect& cleared_rect) {
 783   DCHECK_GE(level, 0);
 784   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
 785   DCHECK_LT(static_cast<size_t>(face_index),
 786             face_infos_.size());
 787   DCHECK_LT(static_cast<size_t>(level),
 788             face_infos_[face_index].level_infos.size());
 789   DCHECK_GE(width, 0);
 790   DCHECK_GE(height, 0);
 791   DCHECK_GE(depth, 0);
 792   Texture::LevelInfo& info =
 793       face_infos_[face_index].level_infos[level];
 794
 795   // Update counters only if any attributes have changed. Counters are
 796   // comparisons between the old and new values so it must be done before any
 797   // assignment has been done to the LevelInfo.
 798   if (info.target != target ||
 799       info.internal_format != internal_format ||
 800       info.width != width ||
 801       info.height != height ||
 802       info.depth != depth ||
 803       info.format != format ||
 804       info.type != type) {
 805     if (level == 0) {
 806       // Calculate the mip level count.
 807       face_infos_[face_index].num_mip_levels =
 808         TextureManager::ComputeMipMapCount(target_, width, height, depth);
 809
 810       // Update NPOT face count for the first level.
 811       bool prev_npot = TextureIsNPOT(info.width, info.height, info.depth);
 812       bool now_npot = TextureIsNPOT(width, height, depth);
 813       if (prev_npot != now_npot)
 814         num_npot_faces_ += now_npot ? 1 : -1;
 815
 816       // Signify that level 0 has been changed, so they need to be reverified.
 817       texture_level0_dirty_ = true;
 818     }
 819
 820     // Signify that at least one of the mips has changed.
 821     texture_mips_dirty_ = true;
 822   }
 823
 824   info.target = target;
 825   info.level = level;
 826   info.internal_format = internal_format;
 827   info.depth = depth;
 828   info.border = border;
 829   info.format = format;
 830   info.type = type;
 831   info.image = 0;
 832
 833   UpdateMipCleared(&info, width, height, cleared_rect);
 834
 835   estimated_size_ -= info.estimated_size;
 836   GLES2Util::ComputeImageDataSizes(
 837       width, height, 1, format, type, 4, &info.estimated_size, NULL, NULL);
 838   estimated_size_ += info.estimated_size;
 839
 840   max_level_set_ = std::max(max_level_set_, level);
 841   Update(feature_info);
 842   UpdateCleared();
 843   UpdateCanRenderCondition();
 844   UpdateHasImages();
 845   if (IsAttachedToFramebuffer()) {
 846     // TODO(gman): If textures tracked which framebuffers they were attached to
 847     // we could just mark those framebuffers as not complete.
 848     IncAllFramebufferStateChangeCount();
 849   }
 850 }
 851
 852 bool Texture::ValidForTexture(
 853     GLint target,
 854     GLint level,
 855     GLint xoffset,
 856     GLint yoffset,
 857     GLint zoffset,
 858     GLsizei width,
 859     GLsizei height,
 860     GLsizei depth,
 861     GLenum type) const {
 862   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
 863   if (level >= 0 && face_index < face_infos_.size() &&
 864       static_cast<size_t>(level) < face_infos_[face_index].level_infos.size()) {
 865     const LevelInfo& info = face_infos_[face_index].level_infos[level];
 866     int32 max_x;
 867     int32 max_y;
 868     int32 max_z;
 869     return SafeAddInt32(xoffset, width, &max_x) &&
 870            SafeAddInt32(yoffset, height, &max_y) &&
 871            SafeAddInt32(zoffset, depth, &max_z) &&
 872            xoffset >= 0 &&
 873            yoffset >= 0 &&
 874            zoffset >= 0 &&
 875            max_x <= info.width &&
 876            max_y <= info.height &&
 877            max_z <= info.depth &&
 878            type == info.type;
 879   }
 880   return false;
 881 }
 882
 883 bool Texture::GetLevelSize(
 884     GLint target, GLint level,
 885     GLsizei* width, GLsizei* height, GLsizei* depth) const {
 886   DCHECK(width);
 887   DCHECK(height);
 888   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
 889   if (level >= 0 && face_index < face_infos_.size() &&
 890       static_cast<size_t>(level) < face_infos_[face_index].level_infos.size()) {
 891     const LevelInfo& info = face_infos_[face_index].level_infos[level];
 892     if (info.target != 0) {
 893       *width = info.width;
 894       *height = info.height;
 895       if (depth)
 896         *depth = info.depth;
 897       return true;
 898     }
 899   }
 900   return false;
 901 }
 902
 903 bool Texture::GetLevelType(
 904     GLint target, GLint level, GLenum* type, GLenum* internal_format) const {
 905   DCHECK(type);
 906   DCHECK(internal_format);
 907   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
 908   if (level >= 0 && face_index < face_infos_.size() &&
 909       static_cast<size_t>(level) < face_infos_[face_index].level_infos.size()) {
 910     const LevelInfo& info = face_infos_[face_index].level_infos[level];
 911     if (info.target != 0) {
 912       *type = info.type;
 913       *internal_format = info.internal_format;
 914       return true;
 915     }
 916   }
 917   return false;
 918 }
 919
 920 GLenum Texture::SetParameteri(
 921     const FeatureInfo* feature_info, GLenum pname, GLint param) {
 922   DCHECK(feature_info);
 923
 924   if (target_ == GL_TEXTURE_EXTERNAL_OES ||
 925       target_ == GL_TEXTURE_RECTANGLE_ARB) {
 926     if (pname == GL_TEXTURE_MIN_FILTER &&
 927         (param != GL_NEAREST && param != GL_LINEAR))
 928       return GL_INVALID_ENUM;
 929     if ((pname == GL_TEXTURE_WRAP_S || pname == GL_TEXTURE_WRAP_T) &&
 930         param != GL_CLAMP_TO_EDGE)
 931       return GL_INVALID_ENUM;
 932   }
 933
 934   switch (pname) {
 935     case GL_TEXTURE_MIN_LOD:
 936     case GL_TEXTURE_MAX_LOD:
 937       {
 938         GLfloat fparam = static_cast<GLfloat>(param);
 939         return SetParameterf(feature_info, pname, fparam);
 940       }
 941     case GL_TEXTURE_MIN_FILTER:
 942       if (!feature_info->validators()->texture_min_filter_mode.IsValid(param)) {
 943         return GL_INVALID_ENUM;
 944       }
 945       min_filter_ = param;
 946       break;
 947     case GL_TEXTURE_MAG_FILTER:
 948       if (!feature_info->validators()->texture_mag_filter_mode.IsValid(param)) {
 949         return GL_INVALID_ENUM;
 950       }
 951       mag_filter_ = param;
 952       break;
 953     case GL_TEXTURE_POOL_CHROMIUM:
 954       if (!feature_info->validators()->texture_pool.IsValid(param)) {
 955         return GL_INVALID_ENUM;
 956       }
 957       GetMemTracker()->TrackMemFree(estimated_size());
 958       pool_ = param;
 959       GetMemTracker()->TrackMemAlloc(estimated_size());
 960       break;
 961     case GL_TEXTURE_WRAP_R:
 962       if (!feature_info->validators()->texture_wrap_mode.IsValid(param)) {
 963         return GL_INVALID_ENUM;
 964       }
 965       wrap_r_ = param;
 966       break;
 967     case GL_TEXTURE_WRAP_S:
 968       if (!feature_info->validators()->texture_wrap_mode.IsValid(param)) {
 969         return GL_INVALID_ENUM;
 970       }
 971       wrap_s_ = param;
 972       break;
 973     case GL_TEXTURE_WRAP_T:
 974       if (!feature_info->validators()->texture_wrap_mode.IsValid(param)) {
 975         return GL_INVALID_ENUM;
 976       }
 977       wrap_t_ = param;
 978       break;
 979     case GL_TEXTURE_COMPARE_FUNC:
 980       if (!feature_info->validators()->texture_compare_func.IsValid(param)) {
 981         return GL_INVALID_ENUM;
 982       }
 983       compare_func_ = param;
 984       break;
 985     case GL_TEXTURE_COMPARE_MODE:
 986       if (!feature_info->validators()->texture_compare_mode.IsValid(param)) {
 987         return GL_INVALID_ENUM;
 988       }
 989       compare_mode_ = param;
 990       break;
 991     case GL_TEXTURE_BASE_LEVEL:
 992       if (param < 0) {
 993         return GL_INVALID_VALUE;
 994       }
 995       base_level_ = param;
 996       break;
 997     case GL_TEXTURE_MAX_LEVEL:
 998       if (param < 0) {
 999         return GL_INVALID_VALUE;
1000       }
1001       max_level_ = param;
1002       break;
1003     case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1004       if (param < 1) {
1005         return GL_INVALID_VALUE;
1006       }
1007       break;
1008     case GL_TEXTURE_USAGE_ANGLE:
1009       if (!feature_info->validators()->texture_usage.IsValid(param)) {
1010         return GL_INVALID_ENUM;
1011       }
1012       usage_ = param;
1013       break;
1014     default:
1015       NOTREACHED();
1016       return GL_INVALID_ENUM;
1017   }
1018   Update(feature_info);
1019   UpdateCleared();
1020   UpdateCanRenderCondition();
1021   return GL_NO_ERROR;
1022 }
1023
1024 GLenum Texture::SetParameterf(
1025     const FeatureInfo* feature_info, GLenum pname, GLfloat param) {
1026   switch (pname) {
1027     case GL_TEXTURE_MIN_FILTER:
1028     case GL_TEXTURE_MAG_FILTER:
1029     case GL_TEXTURE_POOL_CHROMIUM:
1030     case GL_TEXTURE_WRAP_R:
1031     case GL_TEXTURE_WRAP_S:
1032     case GL_TEXTURE_WRAP_T:
1033     case GL_TEXTURE_COMPARE_FUNC:
1034     case GL_TEXTURE_COMPARE_MODE:
1035     case GL_TEXTURE_BASE_LEVEL:
1036     case GL_TEXTURE_MAX_LEVEL:
1037     case GL_TEXTURE_USAGE_ANGLE:
1038       {
1039         GLint iparam = static_cast<GLint>(param);
1040         return SetParameteri(feature_info, pname, iparam);
1041       }
1042     case GL_TEXTURE_MIN_LOD:
1043       min_lod_ = param;
1044       break;
1045     case GL_TEXTURE_MAX_LOD:
1046       max_lod_ = param;
1047       break;
1048     case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1049       if (param < 1.f) {
1050         return GL_INVALID_VALUE;
1051       }
1052       break;
1053     default:
1054       NOTREACHED();
1055       return GL_INVALID_ENUM;
1056   }
1057   return GL_NO_ERROR;
1058 }
1059
1060 void Texture::Update(const FeatureInfo* feature_info) {
1061   // Update npot status.
1062   // Assume GL_TEXTURE_EXTERNAL_OES textures are npot, all others
1063   npot_ = (target_ == GL_TEXTURE_EXTERNAL_OES) || (num_npot_faces_ > 0);
1064
1065   if (face_infos_.empty()) {
1066     texture_complete_ = false;
1067     cube_complete_ = false;
1068     return;
1069   }
1070
1071   // Update texture_complete and cube_complete status.
1072   const Texture::FaceInfo& first_face = face_infos_[0];
1073   const Texture::LevelInfo& first_level = first_face.level_infos[0];
1074   const GLsizei levels_needed = first_face.num_mip_levels;
1075
1076   texture_complete_ =
1077       max_level_set_ >= (levels_needed - 1) && max_level_set_ >= 0;
1078   cube_complete_ = (face_infos_.size() == 6) &&
1079                    (first_level.width == first_level.height);
1080
1081   if (first_level.width == 0 || first_level.height == 0) {
1082     texture_complete_ = false;
1083   } else if (first_level.type == GL_FLOAT &&
1084       !feature_info->feature_flags().enable_texture_float_linear &&
1085       (min_filter_ != GL_NEAREST_MIPMAP_NEAREST ||
1086        mag_filter_ != GL_NEAREST)) {
1087     texture_complete_ = false;
1088   } else if (first_level.type == GL_HALF_FLOAT_OES &&
1089              !feature_info->feature_flags().enable_texture_half_float_linear &&
1090              (min_filter_ != GL_NEAREST_MIPMAP_NEAREST ||
1091               mag_filter_ != GL_NEAREST)) {
1092     texture_complete_ = false;
1093   }
1094
1095   if (cube_complete_ && texture_level0_dirty_) {
1096     texture_level0_complete_ = true;
1097     for (size_t ii = 0; ii < face_infos_.size(); ++ii) {
1098       const Texture::LevelInfo& level0 = face_infos_[ii].level_infos[0];
1099       if (!TextureFaceComplete(first_level,
1100                                ii,
1101                                level0.target,
1102                                level0.internal_format,
1103                                level0.width,
1104                                level0.height,
1105                                level0.depth,
1106                                level0.format,
1107                                level0.type)) {
1108         texture_level0_complete_ = false;
1109         break;
1110       }
1111     }
1112     texture_level0_dirty_ = false;
1113   }
1114   cube_complete_ &= texture_level0_complete_;
1115
1116   if (texture_complete_ && texture_mips_dirty_) {
1117     texture_mips_complete_ = true;
1118     for (size_t ii = 0;
1119          ii < face_infos_.size() && texture_mips_complete_;
1120          ++ii) {
1121       const Texture::FaceInfo& face_info = face_infos_[ii];
1122       const Texture::LevelInfo& level0 = face_info.level_infos[0];
1123       for (GLsizei jj = 1; jj < levels_needed; ++jj) {
1124         const Texture::LevelInfo& level_info = face_infos_[ii].level_infos[jj];
1125         if (!TextureMipComplete(level0,
1126                                 level_info.target,
1127                                 jj,
1128                                 level_info.internal_format,
1129                                 level_info.width,
1130                                 level_info.height,
1131                                 level_info.depth,
1132                                 level_info.format,
1133                                 level_info.type)) {
1134           texture_mips_complete_ = false;
1135           break;
1136         }
1137       }
1138     }
1139     texture_mips_dirty_ = false;
1140   }
1141   texture_complete_ &= texture_mips_complete_;
1142 }
1143
1144 bool Texture::ClearRenderableLevels(GLES2Decoder* decoder) {
1145   DCHECK(decoder);
1146   if (cleared_) {
1147     return true;
1148   }
1149
1150   for (size_t ii = 0; ii < face_infos_.size(); ++ii) {
1151     const Texture::FaceInfo& face_info = face_infos_[ii];
1152     for (GLint jj = 0; jj < face_info.num_mip_levels; ++jj) {
1153       const Texture::LevelInfo& info = face_info.level_infos[jj];
1154       if (info.target != 0) {
1155         if (!ClearLevel(decoder, info.target, jj)) {
1156           return false;
1157         }
1158       }
1159     }
1160   }
1161   UpdateSafeToRenderFrom(true);
1162   return true;
1163 }
1164
1165 gfx::Rect Texture::GetLevelClearedRect(GLenum target, GLint level) const {
1166   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
1167   if (face_index >= face_infos_.size() ||
1168       level >= static_cast<GLint>(face_infos_[face_index].level_infos.size())) {
1169     return gfx::Rect();
1170   }
1171
1172   const Texture::LevelInfo& info = face_infos_[face_index].level_infos[level];
1173
1174   return info.cleared_rect;
1175 }
1176
1177 bool Texture::IsLevelCleared(GLenum target, GLint level) const {
1178   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
1179   if (face_index >= face_infos_.size() ||
1180       level >= static_cast<GLint>(face_infos_[face_index].level_infos.size())) {
1181     return true;
1182   }
1183
1184   const Texture::LevelInfo& info = face_infos_[face_index].level_infos[level];
1185
1186   return info.cleared_rect == gfx::Rect(info.width, info.height);
1187 }
1188
1189 void Texture::InitTextureMaxAnisotropyIfNeeded(GLenum target) {
1190   if (texture_max_anisotropy_initialized_)
1191     return;
1192   texture_max_anisotropy_initialized_ = true;
1193   GLfloat params[] = { 1.0f };
1194   glTexParameterfv(target, GL_TEXTURE_MAX_ANISOTROPY_EXT, params);
1195 }
1196
1197 bool Texture::ClearLevel(
1198     GLES2Decoder* decoder, GLenum target, GLint level) {
1199   DCHECK(decoder);
1200   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
1201   if (face_index >= face_infos_.size() ||
1202       level >= static_cast<GLint>(face_infos_[face_index].level_infos.size())) {
1203     return true;
1204   }
1205
1206   Texture::LevelInfo& info = face_infos_[face_index].level_infos[level];
1207
1208   DCHECK(target == info.target);
1209
1210   if (info.target == 0 ||
1211       info.cleared_rect == gfx::Rect(info.width, info.height) ||
1212       info.width == 0 || info.height == 0 || info.depth == 0) {
1213     return true;
1214   }
1215
1216   // Clear all remaining sub regions.
1217   const int x[] = {
1218       0, info.cleared_rect.x(), info.cleared_rect.right(), info.width};
1219   const int y[] = {
1220       0, info.cleared_rect.y(), info.cleared_rect.bottom(), info.height};
1221
1222   for (size_t j = 0; j < 3; ++j) {
1223     for (size_t i = 0; i < 3; ++i) {
1224       // Center of nine patch is already cleared.
1225       if (j == 1 && i == 1)
1226         continue;
1227
1228       gfx::Rect rect(x[i], y[j], x[i + 1] - x[i], y[j + 1] - y[j]);
1229       if (rect.IsEmpty())
1230         continue;
1231
1232       // NOTE: It seems kind of gross to call back into the decoder for this
1233       // but only the decoder knows all the state (like unpack_alignment_)
1234       // that's needed to be able to call GL correctly.
1235       bool cleared = decoder->ClearLevel(this, info.target, info.level,
1236                                          info.format, info.type, rect.x(),
1237                                          rect.y(), rect.width(), rect.height());
1238       if (!cleared)
1239         return false;
1240     }
1241   }
1242
1243   UpdateMipCleared(&info, info.width, info.height,
1244                    gfx::Rect(info.width, info.height));
1245   return true;
1246 }
1247
1248 void Texture::SetLevelImage(
1249     const FeatureInfo* feature_info,
1250     GLenum target,
1251     GLint level,
1252     gfx::GLImage* image) {
1253   DCHECK_GE(level, 0);
1254   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
1255   DCHECK_LT(static_cast<size_t>(face_index),
1256             face_infos_.size());
1257   DCHECK_LT(static_cast<size_t>(level),
1258             face_infos_[face_index].level_infos.size());
1259   Texture::LevelInfo& info =
1260       face_infos_[face_index].level_infos[level];
1261   DCHECK_EQ(info.target, target);
1262   DCHECK_EQ(info.level, level);
1263   info.image = image;
1264   UpdateCanRenderCondition();
1265   UpdateHasImages();
1266 }
1267
1268 gfx::GLImage* Texture::GetLevelImage(GLint target, GLint level) const {
1269   if (target != GL_TEXTURE_2D && target != GL_TEXTURE_EXTERNAL_OES &&
1270       target != GL_TEXTURE_RECTANGLE_ARB) {
1271     return NULL;
1272   }
1273
1274   size_t face_index = GLES2Util::GLTargetToFaceIndex(target);
1275   if (level >= 0 && face_index < face_infos_.size() &&
1276       static_cast<size_t>(level) < face_infos_[face_index].level_infos.size()) {
1277     const LevelInfo& info = face_infos_[face_index].level_infos[level];
1278     if (info.target != 0) {
1279       return info.image.get();
1280     }
1281   }
1282   return NULL;
1283 }
1284
1285 void Texture::OnWillModifyPixels() {
1286   gfx::GLImage* image = GetLevelImage(target(), 0);
1287   if (image)
1288     image->WillModifyTexImage();
1289 }
1290
1291 void Texture::OnDidModifyPixels() {
1292   gfx::GLImage* image = GetLevelImage(target(), 0);
1293   if (image)
1294     image->DidModifyTexImage();
1295 }
1296
1297 TextureRef::TextureRef(TextureManager* manager,
1298                        GLuint client_id,
1299                        Texture* texture)
1300     : manager_(manager),
1301       texture_(texture),
1302       client_id_(client_id),
1303       num_observers_(0) {
1304   DCHECK(manager_);
1305   DCHECK(texture_);
1306   texture_->AddTextureRef(this);
1307   manager_->StartTracking(this);
1308 }
1309
1310 scoped_refptr<TextureRef> TextureRef::Create(TextureManager* manager,
1311                                              GLuint client_id,
1312                                              GLuint service_id) {
1313   return new TextureRef(manager, client_id, new Texture(service_id));
1314 }
1315
1316 TextureRef::~TextureRef() {
1317   manager_->StopTracking(this);
1318   texture_->RemoveTextureRef(this, manager_->have_context_);
1319   manager_ = NULL;
1320 }
1321
1322 TextureManager::TextureManager(MemoryTracker* memory_tracker,
1323                                FeatureInfo* feature_info,
1324                                GLint max_texture_size,
1325                                GLint max_cube_map_texture_size,
1326                                GLint max_rectangle_texture_size,
1327                                GLint max_3d_texture_size,
1328                                bool use_default_textures)
1329     : memory_tracker_managed_(
1330           new MemoryTypeTracker(memory_tracker, MemoryTracker::kManaged)),
1331       memory_tracker_unmanaged_(
1332           new MemoryTypeTracker(memory_tracker, MemoryTracker::kUnmanaged)),
1333       memory_tracker_(memory_tracker),
1334       feature_info_(feature_info),
1335       framebuffer_manager_(NULL),
1336       max_texture_size_(max_texture_size),
1337       max_cube_map_texture_size_(max_cube_map_texture_size),
1338       max_rectangle_texture_size_(max_rectangle_texture_size),
1339       max_3d_texture_size_(max_3d_texture_size),
1340       max_levels_(ComputeMipMapCount(GL_TEXTURE_2D,
1341                                      max_texture_size,
1342                                      max_texture_size,
1343                                      max_texture_size)),
1344       max_cube_map_levels_(ComputeMipMapCount(GL_TEXTURE_CUBE_MAP,
1345                                               max_cube_map_texture_size,
1346                                               max_cube_map_texture_size,
1347                                               max_cube_map_texture_size)),
1348       max_3d_levels_(ComputeMipMapCount(GL_TEXTURE_3D,
1349                                         // Same as GL_TEXTURE_2D_ARRAY
1350                                         max_3d_texture_size,
1351                                         max_3d_texture_size,
1352                                         max_3d_texture_size)),
1353       use_default_textures_(use_default_textures),
1354       num_unrenderable_textures_(0),
1355       num_unsafe_textures_(0),
1356       num_uncleared_mips_(0),
1357       num_images_(0),
1358       texture_count_(0),
1359       have_context_(true) {
1360   for (int ii = 0; ii < kNumDefaultTextures; ++ii) {
1361     black_texture_ids_[ii] = 0;
1362   }
1363 }
1364
1365 bool TextureManager::Initialize() {
1366   // TODO(gman): The default textures have to be real textures, not the 0
1367   // texture because we simulate non shared resources on top of shared
1368   // resources and all contexts that share resource share the same default
1369   // texture.
1370   default_textures_[kTexture2D] = CreateDefaultAndBlackTextures(
1371       GL_TEXTURE_2D, &black_texture_ids_[kTexture2D]);
1372   default_textures_[kCubeMap] = CreateDefaultAndBlackTextures(
1373       GL_TEXTURE_CUBE_MAP, &black_texture_ids_[kCubeMap]);
1374
1375   if (feature_info_->feature_flags().oes_egl_image_external) {
1376     default_textures_[kExternalOES] = CreateDefaultAndBlackTextures(
1377         GL_TEXTURE_EXTERNAL_OES, &black_texture_ids_[kExternalOES]);
1378   }
1379
1380   if (feature_info_->feature_flags().arb_texture_rectangle) {
1381     default_textures_[kRectangleARB] = CreateDefaultAndBlackTextures(
1382         GL_TEXTURE_RECTANGLE_ARB, &black_texture_ids_[kRectangleARB]);
1383   }
1384
1385   // When created from InProcessCommandBuffer, we won't have a |memory_tracker_|
1386   // so don't register a dump provider.
1387   if (memory_tracker_) {
1388     base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
1389         this, base::ThreadTaskRunnerHandle::Get());
1390   }
1391
1392   return true;
1393 }
1394
1395 scoped_refptr<TextureRef>
1396     TextureManager::CreateDefaultAndBlackTextures(
1397         GLenum target,
1398         GLuint* black_texture) {
1399   static uint8 black[] = {0, 0, 0, 255};
1400
1401   // Sampling a texture not associated with any EGLImage sibling will return
1402   // black values according to the spec.
1403   bool needs_initialization = (target != GL_TEXTURE_EXTERNAL_OES);
1404   bool needs_faces = (target == GL_TEXTURE_CUBE_MAP);
1405
1406   // Make default textures and texture for replacing non-renderable textures.
1407   GLuint ids[2];
1408   const int num_ids = use_default_textures_ ? 2 : 1;
1409   glGenTextures(num_ids, ids);
1410   for (int ii = 0; ii < num_ids; ++ii) {
1411     glBindTexture(target, ids[ii]);
1412     if (needs_initialization) {
1413       if (needs_faces) {
1414         for (int jj = 0; jj < GLES2Util::kNumFaces; ++jj) {
1415           glTexImage2D(GLES2Util::IndexToGLFaceTarget(jj), 0, GL_RGBA, 1, 1, 0,
1416                        GL_RGBA, GL_UNSIGNED_BYTE, black);
1417         }
1418       } else {
1419         glTexImage2D(target, 0, GL_RGBA, 1, 1, 0, GL_RGBA,
1420                      GL_UNSIGNED_BYTE, black);
1421       }
1422     }
1423   }
1424   glBindTexture(target, 0);
1425
1426   scoped_refptr<TextureRef> default_texture;
1427   if (use_default_textures_) {
1428     default_texture = TextureRef::Create(this, 0, ids[1]);
1429     SetTarget(default_texture.get(), target);
1430     if (needs_faces) {
1431       for (int ii = 0; ii < GLES2Util::kNumFaces; ++ii) {
1432         SetLevelInfo(default_texture.get(), GLES2Util::IndexToGLFaceTarget(ii),
1433                      0, GL_RGBA, 1, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE,
1434                      gfx::Rect(1, 1));
1435       }
1436     } else {
1437       if (needs_initialization) {
1438         SetLevelInfo(default_texture.get(), GL_TEXTURE_2D, 0, GL_RGBA, 1, 1, 1,
1439                      0, GL_RGBA, GL_UNSIGNED_BYTE, gfx::Rect(1, 1));
1440       } else {
1441         SetLevelInfo(default_texture.get(), GL_TEXTURE_EXTERNAL_OES, 0, GL_RGBA,
1442                      1, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, gfx::Rect(1, 1));
1443       }
1444     }
1445   }
1446
1447   *black_texture = ids[0];
1448   return default_texture;
1449 }
1450
1451 bool TextureManager::ValidForTarget(
1452     GLenum target, GLint level, GLsizei width, GLsizei height, GLsizei depth) {
1453   GLsizei max_size = MaxSizeForTarget(target) >> level;
1454   return level >= 0 &&
1455          width >= 0 &&
1456          height >= 0 &&
1457          depth >= 0 &&
1458          level < MaxLevelsForTarget(target) &&
1459          width <= max_size &&
1460          height <= max_size &&
1461          depth <= max_size &&
1462          (level == 0 || feature_info_->feature_flags().npot_ok ||
1463           (!GLES2Util::IsNPOT(width) &&
1464            !GLES2Util::IsNPOT(height) &&
1465            !GLES2Util::IsNPOT(depth))) &&
1466          (target != GL_TEXTURE_CUBE_MAP || (width == height && depth == 1)) &&
1467          (target != GL_TEXTURE_2D || (depth == 1));
1468 }
1469
1470 void TextureManager::SetTarget(TextureRef* ref, GLenum target) {
1471   DCHECK(ref);
1472   ref->texture()
1473       ->SetTarget(feature_info_.get(), target, MaxLevelsForTarget(target));
1474 }
1475
1476 void TextureManager::SetLevelClearedRect(TextureRef* ref,
1477                                          GLenum target,
1478                                          GLint level,
1479                                          const gfx::Rect& cleared_rect) {
1480   DCHECK(ref);
1481   ref->texture()->SetLevelClearedRect(target, level, cleared_rect);
1482 }
1483
1484 void TextureManager::SetLevelCleared(TextureRef* ref,
1485                                      GLenum target,
1486                                      GLint level,
1487                                      bool cleared) {
1488   DCHECK(ref);
1489   ref->texture()->SetLevelCleared(target, level, cleared);
1490 }
1491
1492 bool TextureManager::ClearRenderableLevels(
1493     GLES2Decoder* decoder, TextureRef* ref) {
1494   DCHECK(ref);
1495   return ref->texture()->ClearRenderableLevels(decoder);
1496 }
1497
1498 bool TextureManager::ClearTextureLevel(
1499     GLES2Decoder* decoder, TextureRef* ref,
1500     GLenum target, GLint level) {
1501   DCHECK(ref);
1502   Texture* texture = ref->texture();
1503   if (texture->num_uncleared_mips() == 0) {
1504     return true;
1505   }
1506   bool result = texture->ClearLevel(decoder, target, level);
1507   texture->UpdateCleared();
1508   return result;
1509 }
1510
1511 void TextureManager::SetLevelInfo(TextureRef* ref,
1512                                   GLenum target,
1513                                   GLint level,
1514                                   GLenum internal_format,
1515                                   GLsizei width,
1516                                   GLsizei height,
1517                                   GLsizei depth,
1518                                   GLint border,
1519                                   GLenum format,
1520                                   GLenum type,
1521                                   const gfx::Rect& cleared_rect) {
1522   DCHECK(gfx::Rect(width, height).Contains(cleared_rect));
1523   DCHECK(ref);
1524   Texture* texture = ref->texture();
1525
1526   texture->GetMemTracker()->TrackMemFree(texture->estimated_size());
1527   texture->SetLevelInfo(feature_info_.get(), target, level, internal_format,
1528                         width, height, depth, border, format, type,
1529                         cleared_rect);
1530   texture->GetMemTracker()->TrackMemAlloc(texture->estimated_size());
1531 }
1532
1533 Texture* TextureManager::Produce(TextureRef* ref) {
1534   DCHECK(ref);
1535   return ref->texture();
1536 }
1537
1538 TextureRef* TextureManager::Consume(
1539     GLuint client_id,
1540     Texture* texture) {
1541   DCHECK(client_id);
1542   scoped_refptr<TextureRef> ref(new TextureRef(this, client_id, texture));
1543   bool result = textures_.insert(std::make_pair(client_id, ref)).second;
1544   DCHECK(result);
1545   return ref.get();
1546 }
1547
1548 void TextureManager::SetParameteri(
1549     const char* function_name, ErrorState* error_state,
1550     TextureRef* ref, GLenum pname, GLint param) {
1551   DCHECK(error_state);
1552   DCHECK(ref);
1553   Texture* texture = ref->texture();
1554   GLenum result = texture->SetParameteri(feature_info_.get(), pname, param);
1555   if (result != GL_NO_ERROR) {
1556     if (result == GL_INVALID_ENUM) {
1557       ERRORSTATE_SET_GL_ERROR_INVALID_ENUM(
1558           error_state, function_name, param, "param");
1559     } else {
1560       ERRORSTATE_SET_GL_ERROR_INVALID_PARAMI(
1561           error_state, result, function_name, pname, param);
1562     }
1563   } else {
1564     // Texture tracking pools exist only for the command decoder, so
1565     // do not pass them on to the native GL implementation.
1566     if (pname != GL_TEXTURE_POOL_CHROMIUM) {
1567       glTexParameteri(texture->target(), pname, param);
1568     }
1569   }
1570 }
1571
1572 void TextureManager::SetParameterf(
1573     const char* function_name, ErrorState* error_state,
1574     TextureRef* ref, GLenum pname, GLfloat param) {
1575   DCHECK(error_state);
1576   DCHECK(ref);
1577   Texture* texture = ref->texture();
1578   GLenum result = texture->SetParameterf(feature_info_.get(), pname, param);
1579   if (result != GL_NO_ERROR) {
1580     if (result == GL_INVALID_ENUM) {
1581       ERRORSTATE_SET_GL_ERROR_INVALID_ENUM(
1582           error_state, function_name, pname, "pname");
1583     } else {
1584       ERRORSTATE_SET_GL_ERROR_INVALID_PARAMF(
1585           error_state, result, function_name, pname, param);
1586     }
1587   } else {
1588     // Texture tracking pools exist only for the command decoder, so
1589     // do not pass them on to the native GL implementation.
1590     if (pname != GL_TEXTURE_POOL_CHROMIUM) {
1591       glTexParameterf(texture->target(), pname, param);
1592     }
1593   }
1594 }
1595
1596 bool TextureManager::MarkMipmapsGenerated(TextureRef* ref) {
1597   DCHECK(ref);
1598   Texture* texture = ref->texture();
1599   texture->GetMemTracker()->TrackMemFree(texture->estimated_size());
1600   bool result = texture->MarkMipmapsGenerated(feature_info_.get());
1601   texture->GetMemTracker()->TrackMemAlloc(texture->estimated_size());
1602   return result;
1603 }
1604
1605 TextureRef* TextureManager::CreateTexture(
1606     GLuint client_id, GLuint service_id) {
1607   DCHECK_NE(0u, service_id);
1608   scoped_refptr<TextureRef> ref(TextureRef::Create(
1609       this, client_id, service_id));
1610   std::pair<TextureMap::iterator, bool> result =
1611       textures_.insert(std::make_pair(client_id, ref));
1612   DCHECK(result.second);
1613   return ref.get();
1614 }
1615
1616 TextureRef* TextureManager::GetTexture(
1617     GLuint client_id) const {
1618   TextureMap::const_iterator it = textures_.find(client_id);
1619   return it != textures_.end() ? it->second.get() : NULL;
1620 }
1621
1622 void TextureManager::RemoveTexture(GLuint client_id) {
1623   TextureMap::iterator it = textures_.find(client_id);
1624   if (it != textures_.end()) {
1625     it->second->reset_client_id();
1626     textures_.erase(it);
1627   }
1628 }
1629
1630 void TextureManager::StartTracking(TextureRef* ref) {
1631   Texture* texture = ref->texture();
1632   ++texture_count_;
1633   num_uncleared_mips_ += texture->num_uncleared_mips();
1634   if (!texture->SafeToRenderFrom())
1635     ++num_unsafe_textures_;
1636   if (!texture->CanRender(feature_info_.get()))
1637     ++num_unrenderable_textures_;
1638   if (texture->HasImages())
1639     ++num_images_;
1640 }
1641
1642 void TextureManager::StopTracking(TextureRef* ref) {
1643   if (ref->num_observers()) {
1644     for (unsigned int i = 0; i < destruction_observers_.size(); i++) {
1645       destruction_observers_[i]->OnTextureRefDestroying(ref);
1646     }
1647     DCHECK_EQ(ref->num_observers(), 0);
1648   }
1649
1650   Texture* texture = ref->texture();
1651
1652   --texture_count_;
1653   if (texture->HasImages()) {
1654     DCHECK_NE(0, num_images_);
1655     --num_images_;
1656   }
1657   if (!texture->CanRender(feature_info_.get())) {
1658     DCHECK_NE(0, num_unrenderable_textures_);
1659     --num_unrenderable_textures_;
1660   }
1661   if (!texture->SafeToRenderFrom()) {
1662     DCHECK_NE(0, num_unsafe_textures_);
1663     --num_unsafe_textures_;
1664   }
1665   num_uncleared_mips_ -= texture->num_uncleared_mips();
1666   DCHECK_GE(num_uncleared_mips_, 0);
1667 }
1668
1669 MemoryTypeTracker* TextureManager::GetMemTracker(GLenum tracking_pool) {
1670   switch (tracking_pool) {
1671     case GL_TEXTURE_POOL_MANAGED_CHROMIUM:
1672       return memory_tracker_managed_.get();
1673       break;
1674     case GL_TEXTURE_POOL_UNMANAGED_CHROMIUM:
1675       return memory_tracker_unmanaged_.get();
1676       break;
1677     default:
1678       break;
1679   }
1680   NOTREACHED();
1681   return NULL;
1682 }
1683
1684 Texture* TextureManager::GetTextureForServiceId(GLuint service_id) const {
1685   // This doesn't need to be fast. It's only used during slow queries.
1686   for (TextureMap::const_iterator it = textures_.begin();
1687        it != textures_.end(); ++it) {
1688     Texture* texture = it->second->texture();
1689     if (texture->service_id() == service_id)
1690       return texture;
1691   }
1692   return NULL;
1693 }
1694
1695 GLsizei TextureManager::ComputeMipMapCount(GLenum target,
1696                                            GLsizei width,
1697                                            GLsizei height,
1698                                            GLsizei depth) {
1699   switch (target) {
1700     case GL_TEXTURE_EXTERNAL_OES:
1701       return 1;
1702     default:
1703       return 1 +
1704              base::bits::Log2Floor(std::max(std::max(width, height), depth));
1705   }
1706 }
1707
1708 void TextureManager::SetLevelImage(
1709     TextureRef* ref,
1710     GLenum target,
1711     GLint level,
1712     gfx::GLImage* image) {
1713   DCHECK(ref);
1714   ref->texture()->SetLevelImage(feature_info_.get(), target, level, image);
1715 }
1716
1717 size_t TextureManager::GetSignatureSize() const {
1718   return sizeof(TextureTag) + sizeof(TextureSignature);
1719 }
1720
1721 void TextureManager::AddToSignature(
1722     TextureRef* ref,
1723     GLenum target,
1724     GLint level,
1725     std::string* signature) const {
1726   ref->texture()->AddToSignature(feature_info_.get(), target, level, signature);
1727 }
1728
1729 void TextureManager::UpdateSafeToRenderFrom(int delta) {
1730   num_unsafe_textures_ += delta;
1731   DCHECK_GE(num_unsafe_textures_, 0);
1732 }
1733
1734 void TextureManager::UpdateUnclearedMips(int delta) {
1735   num_uncleared_mips_ += delta;
1736   DCHECK_GE(num_uncleared_mips_, 0);
1737 }
1738
1739 void TextureManager::UpdateCanRenderCondition(
1740     Texture::CanRenderCondition old_condition,
1741     Texture::CanRenderCondition new_condition) {
1742   if (old_condition == Texture::CAN_RENDER_NEVER ||
1743       (old_condition == Texture::CAN_RENDER_ONLY_IF_NPOT &&
1744        !feature_info_->feature_flags().npot_ok)) {
1745     DCHECK_GT(num_unrenderable_textures_, 0);
1746     --num_unrenderable_textures_;
1747   }
1748   if (new_condition == Texture::CAN_RENDER_NEVER ||
1749       (new_condition == Texture::CAN_RENDER_ONLY_IF_NPOT &&
1750        !feature_info_->feature_flags().npot_ok))
1751     ++num_unrenderable_textures_;
1752 }
1753
1754 void TextureManager::UpdateNumImages(int delta) {
1755   num_images_ += delta;
1756   DCHECK_GE(num_images_, 0);
1757 }
1758
1759 void TextureManager::IncFramebufferStateChangeCount() {
1760   if (framebuffer_manager_)
1761     framebuffer_manager_->IncFramebufferStateChangeCount();
1762 }
1763
1764 bool TextureManager::ValidateFormatAndTypeCombination(
1765     ErrorState* error_state, const char* function_name, GLenum format,
1766     GLenum type) {
1767   // TODO(zmo): now this is only called by GLES2DecoderImpl::DoCopyTexImage2D
1768   // and is incorrect for ES3. Fix this.
1769   if (!g_format_type_validator.Get().IsValid(format, format, type)) {
1770     ERRORSTATE_SET_GL_ERROR(
1771         error_state, GL_INVALID_OPERATION, function_name,
1772         (std::string("invalid type ") +
1773          GLES2Util::GetStringEnum(type) + " for format " +
1774          GLES2Util::GetStringEnum(format)).c_str());
1775     return false;
1776   }
1777   return true;
1778 }
1779
1780 bool TextureManager::ValidateTextureParameters(
1781     ErrorState* error_state, const char* function_name,
1782     GLenum format, GLenum type, GLenum internal_format, GLint level) {
1783   const Validators* validators = feature_info_->validators();
1784   if (!validators->texture_format.IsValid(format)) {
1785     ERRORSTATE_SET_GL_ERROR_INVALID_ENUM(
1786         error_state, function_name, format, "format");
1787     return false;
1788   }
1789   if (!validators->pixel_type.IsValid(type)) {
1790     ERRORSTATE_SET_GL_ERROR_INVALID_ENUM(
1791         error_state, function_name, type, "type");
1792     return false;
1793   }
1794   if (!g_format_type_validator.Get().IsValid(internal_format, format, type)) {
1795     ERRORSTATE_SET_GL_ERROR(
1796         error_state, GL_INVALID_OPERATION, function_name,
1797         "invalid internalformat/format/type combination");
1798     return false;
1799   }
1800   // For TexSubImage calls, internal_format isn't part of the parameters,
1801   // so its validation needs to be after the internal_format/format/type
1802   // combination validation. Otherwise, an unexpected INVALID_ENUM could be
1803   // generated instead of INVALID_OPERATION.
1804   if (!validators->texture_internal_format.IsValid(internal_format)) {
1805     ERRORSTATE_SET_GL_ERROR_INVALID_ENUM(
1806         error_state, function_name, internal_format, "internal_format");
1807     return false;
1808   }
1809   if (!feature_info_->IsES3Enabled()) {
1810     uint32 channels = GLES2Util::GetChannelsForFormat(format);
1811     if ((channels & (GLES2Util::kDepth | GLES2Util::kStencil)) != 0 && level) {
1812       ERRORSTATE_SET_GL_ERROR(
1813           error_state, GL_INVALID_OPERATION, function_name,
1814           (std::string("invalid format ") + GLES2Util::GetStringEnum(format) +
1815            " for level != 0").c_str());
1816       return false;
1817     }
1818   }
1819   return true;
1820 }
1821
1822 // Gets the texture id for a given target.
1823 TextureRef* TextureManager::GetTextureInfoForTarget(
1824     ContextState* state, GLenum target) {
1825   TextureUnit& unit = state->texture_units[state->active_texture_unit];
1826   TextureRef* texture = NULL;
1827   switch (target) {
1828     case GL_TEXTURE_2D:
1829       texture = unit.bound_texture_2d.get();
1830       break;
1831     case GL_TEXTURE_CUBE_MAP:
1832     case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
1833     case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
1834     case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
1835     case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
1836     case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
1837     case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
1838       texture = unit.bound_texture_cube_map.get();
1839       break;
1840     case GL_TEXTURE_EXTERNAL_OES:
1841       texture = unit.bound_texture_external_oes.get();
1842       break;
1843     case GL_TEXTURE_RECTANGLE_ARB:
1844       texture = unit.bound_texture_rectangle_arb.get();
1845       break;
1846     case GL_TEXTURE_3D:
1847       texture = unit.bound_texture_3d.get();
1848       break;
1849     case GL_TEXTURE_2D_ARRAY:
1850       texture = unit.bound_texture_2d_array.get();
1851       break;
1852     default:
1853       NOTREACHED();
1854       return NULL;
1855   }
1856   return texture;
1857 }
1858
1859 TextureRef* TextureManager::GetTextureInfoForTargetUnlessDefault(
1860     ContextState* state, GLenum target) {
1861   TextureRef* texture = GetTextureInfoForTarget(state, target);
1862   if (!texture)
1863     return NULL;
1864   if (texture == GetDefaultTextureInfo(target))
1865     return NULL;
1866   return texture;
1867 }
1868
1869 bool TextureManager::ValidateTexImage(
1870     ContextState* state,
1871     const char* function_name,
1872     const DoTexImageArguments& args,
1873     TextureRef** texture_ref) {
1874   ErrorState* error_state = state->GetErrorState();
1875   const Validators* validators = feature_info_->validators();
1876   if (((args.command_type == DoTexImageArguments::kTexImage2D) &&
1877        !validators->texture_target.IsValid(args.target)) ||
1878       ((args.command_type == DoTexImageArguments::kTexImage3D) &&
1879        !validators->texture_3_d_target.IsValid(args.target))) {
1880     ERRORSTATE_SET_GL_ERROR_INVALID_ENUM(
1881         error_state, function_name, args.target, "target");
1882     return false;
1883   }
1884   if (!ValidateTextureParameters(
1885       error_state, function_name, args.format, args.type,
1886       args.internal_format, args.level)) {
1887     return false;
1888   }
1889   if (!ValidForTarget(args.target, args.level,
1890                       args.width, args.height, args.depth) ||
1891       args.border != 0) {
1892     ERRORSTATE_SET_GL_ERROR(
1893         error_state, GL_INVALID_VALUE, function_name,
1894         "dimensions out of range");
1895     return false;
1896   }
1897   if ((GLES2Util::GetChannelsForFormat(args.format) &
1898        (GLES2Util::kDepth | GLES2Util::kStencil)) != 0 && args.pixels
1899       && !feature_info_->IsES3Enabled()) {
1900     ERRORSTATE_SET_GL_ERROR(
1901         error_state, GL_INVALID_OPERATION,
1902         function_name, "can not supply data for depth or stencil textures");
1903     return false;
1904   }
1905
1906   TextureRef* local_texture_ref = GetTextureInfoForTarget(state, args.target);
1907   if (!local_texture_ref) {
1908     ERRORSTATE_SET_GL_ERROR(
1909         error_state, GL_INVALID_OPERATION, function_name,
1910         "unknown texture for target");
1911     return false;
1912   }
1913   if (local_texture_ref->texture()->IsImmutable()) {
1914     ERRORSTATE_SET_GL_ERROR(
1915         error_state, GL_INVALID_OPERATION, function_name,
1916         "texture is immutable");
1917     return false;
1918   }
1919
1920   if (!memory_tracker_managed_->EnsureGPUMemoryAvailable(args.pixels_size)) {
1921     ERRORSTATE_SET_GL_ERROR(error_state, GL_OUT_OF_MEMORY, function_name,
1922                             "out of memory");
1923     return false;
1924   }
1925
1926   // Write the TextureReference since this is valid.
1927   *texture_ref = local_texture_ref;
1928   return true;
1929 }
1930
1931 void TextureManager::ValidateAndDoTexImage(
1932     DecoderTextureState* texture_state,
1933     ContextState* state,
1934     DecoderFramebufferState* framebuffer_state,
1935     const char* function_name,
1936     const DoTexImageArguments& args) {
1937   TextureRef* texture_ref;
1938   if (!ValidateTexImage(state, function_name, args, &texture_ref)) {
1939     return;
1940   }
1941
1942   DoTexImage(texture_state, state->GetErrorState(), framebuffer_state,
1943              function_name, texture_ref, args);
1944 }
1945
1946 GLenum TextureManager::AdjustTexFormat(GLenum format) const {
1947   // TODO(bajones): GLES 3 allows for internal format and format to differ.
1948   // This logic may need to change as a result.
1949   if (gfx::GetGLImplementation() == gfx::kGLImplementationDesktopGL) {
1950     if (format == GL_SRGB_EXT)
1951       return GL_RGB;
1952     if (format == GL_SRGB_ALPHA_EXT)
1953       return GL_RGBA;
1954   }
1955   return format;
1956 }
1957
1958 void TextureManager::DoTexImage(
1959     DecoderTextureState* texture_state,
1960     ErrorState* error_state,
1961     DecoderFramebufferState* framebuffer_state,
1962     const char* function_name,
1963     TextureRef* texture_ref,
1964     const DoTexImageArguments& args) {
1965   Texture* texture = texture_ref->texture();
1966   GLsizei tex_width = 0;
1967   GLsizei tex_height = 0;
1968   GLsizei tex_depth = 0;
1969   GLenum tex_type = 0;
1970   GLenum tex_format = 0;
1971   bool level_is_same =
1972       texture->GetLevelSize(
1973           args.target, args.level, &tex_width, &tex_height, &tex_depth) &&
1974       texture->GetLevelType(args.target, args.level, &tex_type, &tex_format) &&
1975       args.width == tex_width && args.height == tex_height &&
1976       args.depth == tex_depth && args.type == tex_type &&
1977       args.format == tex_format;
1978
1979   if (level_is_same && !args.pixels) {
1980     // Just set the level texture but mark the texture as uncleared.
1981     SetLevelInfo(texture_ref, args.target, args.level, args.internal_format,
1982                  args.width, args.height, args.depth, args.border, args.format,
1983                  args.type, gfx::Rect());
1984     texture_state->tex_image_failed = false;
1985     return;
1986   }
1987
1988   if (texture->IsAttachedToFramebuffer()) {
1989     framebuffer_state->clear_state_dirty = true;
1990   }
1991
1992   if (texture_state->texsubimage_faster_than_teximage &&
1993       level_is_same && args.pixels) {
1994     {
1995       ScopedTextureUploadTimer timer(texture_state);
1996       if (args.command_type == DoTexImageArguments::kTexImage3D) {
1997         glTexSubImage3D(args.target, args.level, 0, 0, 0,
1998                         args.width, args.height, args.depth,
1999                         args.format, args.type, args.pixels);
2000       } else {
2001         glTexSubImage2D(args.target, args.level, 0, 0, args.width, args.height,
2002                         AdjustTexFormat(args.format), args.type, args.pixels);
2003       }
2004     }
2005     SetLevelCleared(texture_ref, args.target, args.level, true);
2006     texture_state->tex_image_failed = false;
2007     return;
2008   }
2009
2010   ERRORSTATE_COPY_REAL_GL_ERRORS_TO_WRAPPER(error_state, function_name);
2011   {
2012     ScopedTextureUploadTimer timer(texture_state);
2013     if (args.command_type == DoTexImageArguments::kTexImage3D) {
2014       glTexImage3D(args.target, args.level, args.internal_format, args.width,
2015                    args.height, args.depth, args.border, args.format,
2016                    args.type, args.pixels);
2017     } else {
2018       glTexImage2D(args.target, args.level, args.internal_format, args.width,
2019                    args.height, args.border, AdjustTexFormat(args.format),
2020                    args.type, args.pixels);
2021     }
2022   }
2023   GLenum error = ERRORSTATE_PEEK_GL_ERROR(error_state, function_name);
2024   if (error == GL_NO_ERROR) {
2025     SetLevelInfo(
2026         texture_ref, args.target, args.level, args.internal_format, args.width,
2027         args.height, args.depth, args.border, args.format, args.type,
2028         args.pixels != NULL ? gfx::Rect(args.width, args.height) : gfx::Rect());
2029     texture_state->tex_image_failed = false;
2030   }
2031 }
2032
2033 ScopedTextureUploadTimer::ScopedTextureUploadTimer(
2034     DecoderTextureState* texture_state)
2035     : texture_state_(texture_state),
2036       begin_time_(base::TimeTicks::Now()) {
2037 }
2038
2039 ScopedTextureUploadTimer::~ScopedTextureUploadTimer() {
2040   texture_state_->texture_upload_count++;
2041   texture_state_->total_texture_upload_time +=
2042       base::TimeTicks::Now() - begin_time_;
2043 }
2044
2045 bool TextureManager::OnMemoryDump(const base::trace_event::MemoryDumpArgs& args,
2046                                   base::trace_event::ProcessMemoryDump* pmd) {
2047   for (const auto& resource : textures_) {
2048     // Only dump memory info for textures actually owned by this TextureManager.
2049     DumpTextureRef(pmd, resource.second.get());
2050   }
2051
2052   // Also dump TextureManager internal textures, if allocated.
2053   for (int i = 0; i < kNumDefaultTextures; i++) {
2054     if (default_textures_[i]) {
2055       DumpTextureRef(pmd, default_textures_[i].get());
2056     }
2057   }
2058
2059   return true;
2060 }
2061
2062 void TextureManager::DumpTextureRef(base::trace_event::ProcessMemoryDump* pmd,
2063                                     TextureRef* ref) {
2064   // TODO(ericrk): Trace image-backed textures. crbug.com/514914
2065   if (ref->texture()->HasImages())
2066     return;
2067
2068   uint32_t size = ref->texture()->estimated_size();
2069
2070   // Ignore unallocated texture IDs.
2071   if (size == 0)
2072     return;
2073
2074   std::string dump_name =
2075       base::StringPrintf("gl/textures/client_%d/texture_%d",
2076                          memory_tracker_->ClientId(), ref->client_id());
2077   base::trace_event::MemoryAllocatorDump* dump =
2078       pmd->CreateAllocatorDump(dump_name);
2079   dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize,
2080                   base::trace_event::MemoryAllocatorDump::kUnitsBytes,
2081                   static_cast<uint64_t>(size));
2082
2083   // Add the |client_guid| which expresses shared ownership with the client
2084   // process.
2085   auto client_guid = gfx::GetGLTextureGUIDForTracing(
2086       memory_tracker_->ClientTracingId(), ref->client_id());
2087   pmd->CreateSharedGlobalAllocatorDump(client_guid);
2088   pmd->AddOwnershipEdge(dump->guid(), client_guid);
2089
2090   // Add a |service_guid| which expresses shared ownership between the various
2091   // |client_guid|s.
2092   // TODO(ericrk): May need to ensure uniqueness using GLShareGroup and
2093   // potentially cross-share-group sharing via EGLImages. crbug.com/512534
2094   auto service_guid =
2095       gfx::GetGLTextureGUIDForTracing(0, ref->texture()->service_id());
2096   pmd->CreateSharedGlobalAllocatorDump(service_guid);
2097
2098   int importance = 0;  // Default importance.
2099   // The link to the memory tracking |client_id| is given a higher importance
2100   // than other refs.
2101   if (ref == ref->texture()->memory_tracking_ref_)
2102     importance = 2;
2103
2104   pmd->AddOwnershipEdge(client_guid, service_guid, importance);
2105 }
2106
2107 }  // namespace gles2
2108 }  // namespace gpu