gpu/command_buffer/service/renderbuffer_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/renderbuffer_manager.h"
   6
   7 #include "base/logging.h"
   8 #include "base/strings/stringprintf.h"
   9 #include "base/thread_task_runner_handle.h"
  10 #include "base/trace_event/memory_dump_manager.h"
  11 #include "base/trace_event/trace_event.h"
  12 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
  13 #include "gpu/command_buffer/service/feature_info.h"
  14 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
  15 #include "gpu/command_buffer/service/memory_tracking.h"
  16 #include "ui/gl/gl_implementation.h"
  17 #include "ui/gl/gl_version_info.h"
  18 #include "ui/gl/trace_util.h"
  19
  20 namespace gpu {
  21 namespace gles2 {
  22
  23 // This should contain everything to uniquely identify a Renderbuffer.
  24 static const char RenderbufferTag[] = "|Renderbuffer|";
  25 struct RenderbufferSignature {
  26   GLenum internal_format_;
  27   GLsizei samples_;
  28   GLsizei width_;
  29   GLsizei height_;
  30
  31   // Since we will be hashing this signature structure, the padding must be
  32   // zero initialized. Although the C++11 specifications specify that this is
  33   // true, we will use a constructor with a memset to further enforce it instead
  34   // of relying on compilers adhering to this deep dark corner specification.
  35   RenderbufferSignature(GLenum internal_format,
  36                         GLsizei samples,
  37                         GLsizei width,
  38                         GLsizei height) {
  39     memset(this, 0, sizeof(RenderbufferSignature));
  40     internal_format_ = internal_format;
  41     samples_ = samples;
  42     width_ = width;
  43     height_ = height;
  44   }
  45 };
  46
  47 RenderbufferManager::RenderbufferManager(MemoryTracker* memory_tracker,
  48                                          GLint max_renderbuffer_size,
  49                                          GLint max_samples,
  50                                          FeatureInfo* feature_info)
  51     : memory_type_tracker_(
  52           new MemoryTypeTracker(memory_tracker, MemoryTracker::kUnmanaged)),
  53       memory_tracker_(memory_tracker),
  54       max_renderbuffer_size_(max_renderbuffer_size),
  55       max_samples_(max_samples),
  56       feature_info_(feature_info),
  57       num_uncleared_renderbuffers_(0),
  58       renderbuffer_count_(0),
  59       have_context_(true) {
  60   // When created from InProcessCommandBuffer, we won't have a |memory_tracker_|
  61   // so don't register a dump provider.
  62   if (memory_tracker_) {
  63     base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
  64         this, base::ThreadTaskRunnerHandle::Get());
  65   }
  66 }
  67
  68 RenderbufferManager::~RenderbufferManager() {
  69   DCHECK(renderbuffers_.empty());
  70   // If this triggers, that means something is keeping a reference to
  71   // a Renderbuffer belonging to this.
  72   CHECK_EQ(renderbuffer_count_, 0u);
  73
  74   DCHECK_EQ(0, num_uncleared_renderbuffers_);
  75
  76   base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider(
  77       this);
  78 }
  79
  80 size_t Renderbuffer::EstimatedSize() {
  81   uint32 size = 0;
  82   manager_->ComputeEstimatedRenderbufferSize(
  83       width_, height_, samples_, internal_format_, &size);
  84   return size;
  85 }
  86
  87
  88 size_t Renderbuffer::GetSignatureSize() const {
  89   return sizeof(RenderbufferTag) + sizeof(RenderbufferSignature);
  90 }
  91
  92 void Renderbuffer::AddToSignature(std::string* signature) const {
  93   DCHECK(signature);
  94   RenderbufferSignature signature_data(internal_format_,
  95                                        samples_,
  96                                        width_,
  97                                        height_);
  98
  99   signature->append(RenderbufferTag, sizeof(RenderbufferTag));
 100   signature->append(reinterpret_cast<const char*>(&signature_data),
 101                     sizeof(signature_data));
 102 }
 103
 104 Renderbuffer::Renderbuffer(RenderbufferManager* manager,
 105                            GLuint client_id,
 106                            GLuint service_id)
 107     : manager_(manager),
 108       client_id_(client_id),
 109       service_id_(service_id),
 110       cleared_(true),
 111       has_been_bound_(false),
 112       samples_(0),
 113       internal_format_(GL_RGBA4),
 114       width_(0),
 115       height_(0) {
 116   manager_->StartTracking(this);
 117 }
 118
 119 Renderbuffer::~Renderbuffer() {
 120   if (manager_) {
 121     if (manager_->have_context_) {
 122       GLuint id = service_id();
 123       glDeleteRenderbuffersEXT(1, &id);
 124     }
 125     manager_->StopTracking(this);
 126     manager_ = NULL;
 127   }
 128 }
 129
 130 void RenderbufferManager::Destroy(bool have_context) {
 131   have_context_ = have_context;
 132   renderbuffers_.clear();
 133   DCHECK_EQ(0u, memory_type_tracker_->GetMemRepresented());
 134 }
 135
 136 void RenderbufferManager::StartTracking(Renderbuffer* /* renderbuffer */) {
 137   ++renderbuffer_count_;
 138 }
 139
 140 void RenderbufferManager::StopTracking(Renderbuffer* renderbuffer) {
 141   --renderbuffer_count_;
 142   if (!renderbuffer->cleared()) {
 143     --num_uncleared_renderbuffers_;
 144   }
 145   memory_type_tracker_->TrackMemFree(renderbuffer->EstimatedSize());
 146 }
 147
 148 void RenderbufferManager::SetInfo(
 149     Renderbuffer* renderbuffer,
 150     GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height) {
 151   DCHECK(renderbuffer);
 152   if (!renderbuffer->cleared()) {
 153     --num_uncleared_renderbuffers_;
 154   }
 155   memory_type_tracker_->TrackMemFree(renderbuffer->EstimatedSize());
 156   renderbuffer->SetInfo(samples, internalformat, width, height);
 157   memory_type_tracker_->TrackMemAlloc(renderbuffer->EstimatedSize());
 158   if (!renderbuffer->cleared()) {
 159     ++num_uncleared_renderbuffers_;
 160   }
 161 }
 162
 163 void RenderbufferManager::SetCleared(Renderbuffer* renderbuffer,
 164                                      bool cleared) {
 165   DCHECK(renderbuffer);
 166   if (!renderbuffer->cleared()) {
 167     --num_uncleared_renderbuffers_;
 168   }
 169   renderbuffer->set_cleared(cleared);
 170   if (!renderbuffer->cleared()) {
 171     ++num_uncleared_renderbuffers_;
 172   }
 173 }
 174
 175 void RenderbufferManager::CreateRenderbuffer(
 176     GLuint client_id, GLuint service_id) {
 177   scoped_refptr<Renderbuffer> renderbuffer(
 178       new Renderbuffer(this, client_id, service_id));
 179   std::pair<RenderbufferMap::iterator, bool> result =
 180       renderbuffers_.insert(std::make_pair(client_id, renderbuffer));
 181   DCHECK(result.second);
 182   if (!renderbuffer->cleared()) {
 183     ++num_uncleared_renderbuffers_;
 184   }
 185 }
 186
 187 Renderbuffer* RenderbufferManager::GetRenderbuffer(
 188     GLuint client_id) {
 189   RenderbufferMap::iterator it = renderbuffers_.find(client_id);
 190   return it != renderbuffers_.end() ? it->second.get() : NULL;
 191 }
 192
 193 void RenderbufferManager::RemoveRenderbuffer(GLuint client_id) {
 194   RenderbufferMap::iterator it = renderbuffers_.find(client_id);
 195   if (it != renderbuffers_.end()) {
 196     Renderbuffer* renderbuffer = it->second.get();
 197     renderbuffer->MarkAsDeleted();
 198     renderbuffers_.erase(it);
 199   }
 200 }
 201
 202 bool RenderbufferManager::ComputeEstimatedRenderbufferSize(int width,
 203                                                            int height,
 204                                                            int samples,
 205                                                            int internal_format,
 206                                                            uint32* size) const {
 207   DCHECK(size);
 208
 209   uint32 temp = 0;
 210   if (!SafeMultiplyUint32(width, height, &temp)) {
 211     return false;
 212   }
 213   if (!SafeMultiplyUint32(temp, samples, &temp)) {
 214     return false;
 215   }
 216   GLenum impl_format = InternalRenderbufferFormatToImplFormat(internal_format);
 217   if (!SafeMultiplyUint32(
 218       temp, GLES2Util::RenderbufferBytesPerPixel(impl_format), &temp)) {
 219     return false;
 220   }
 221   *size = temp;
 222   return true;
 223 }
 224
 225 GLenum RenderbufferManager::InternalRenderbufferFormatToImplFormat(
 226     GLenum impl_format) const {
 227   if (!feature_info_->gl_version_info().BehavesLikeGLES()) {
 228     switch (impl_format) {
 229       case GL_DEPTH_COMPONENT16:
 230         return GL_DEPTH_COMPONENT;
 231       case GL_RGBA4:
 232       case GL_RGB5_A1:
 233         return GL_RGBA;
 234       case GL_RGB565:
 235         return GL_RGB;
 236     }
 237   } else {
 238     // Upgrade 16-bit depth to 24-bit if possible.
 239     if (impl_format == GL_DEPTH_COMPONENT16 &&
 240         feature_info_->feature_flags().oes_depth24)
 241       return GL_DEPTH_COMPONENT24;
 242   }
 243   return impl_format;
 244 }
 245
 246 bool RenderbufferManager::OnMemoryDump(
 247     const base::trace_event::MemoryDumpArgs& args,
 248     base::trace_event::ProcessMemoryDump* pmd) {
 249   int client_id = memory_tracker_->ClientId();
 250   for (const auto& renderbuffer_entry : renderbuffers_) {
 251     const auto& client_renderbuffer_id = renderbuffer_entry.first;
 252     const auto& renderbuffer = renderbuffer_entry.second;
 253
 254     std::string dump_name =
 255         base::StringPrintf("gl/client_%d/renderbuffers/renderbuffer_%d",
 256                            client_id, client_renderbuffer_id);
 257     base::trace_event::MemoryAllocatorDump* dump =
 258         pmd->CreateAllocatorDump(dump_name);
 259     dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize,
 260                     base::trace_event::MemoryAllocatorDump::kUnitsBytes,
 261                     static_cast<uint64_t>(renderbuffer->EstimatedSize()));
 262
 263     auto guid = gfx::GetGLRenderbufferGUIDForTracing(
 264         memory_tracker_->ClientTracingId(), client_renderbuffer_id);
 265     pmd->CreateSharedGlobalAllocatorDump(guid);
 266     pmd->AddOwnershipEdge(dump->guid(), guid);
 267   }
 268   return true;
 269 }
 270
 271 }  // namespace gles2
 272 }  // namespace gpu