src/gpu/command_buffer/service/memory_program_cache.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/memory_program_cache.h"
   6
   7 #include "base/base64.h"
   8 #include "base/command_line.h"
   9 #include "base/metrics/histogram.h"
  10 #include "base/sha1.h"
  11 #include "base/strings/string_number_conversions.h"
  12 #include "gpu/command_buffer/common/constants.h"
  13 #include "gpu/command_buffer/service/disk_cache_proto.pb.h"
  14 #include "gpu/command_buffer/service/gl_utils.h"
  15 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
  16 #include "gpu/command_buffer/service/gpu_switches.h"
  17 #include "gpu/command_buffer/service/shader_manager.h"
  18 #include "gpu/command_buffer/service/shader_translator.h"
  19 #include "ui/gl/gl_bindings.h"
  20
  21 namespace {
  22
  23 size_t GetCacheSizeBytes() {
  24   size_t size;
  25   const CommandLine* command_line = CommandLine::ForCurrentProcess();
  26   if (command_line->HasSwitch(switches::kGpuProgramCacheSizeKb) &&
  27       base::StringToSizeT(command_line->GetSwitchValueNative(
  28           switches::kGpuProgramCacheSizeKb),
  29           &size)) {
  30       return size * 1024;
  31   }
  32   return gpu::kDefaultMaxProgramCacheMemoryBytes;
  33 }
  34
  35 }  // anonymous namespace
  36
  37 namespace gpu {
  38 namespace gles2 {
  39
  40 namespace {
  41
  42 enum ShaderMapType {
  43   ATTRIB_MAP = 0,
  44   UNIFORM_MAP,
  45   VARYING_MAP
  46 };
  47
  48 void StoreShaderInfo(ShaderMapType type, ShaderProto *proto,
  49                      const ShaderTranslator::VariableMap& map) {
  50   ShaderTranslator::VariableMap::const_iterator iter;
  51   for (iter = map.begin(); iter != map.end(); ++iter) {
  52     ShaderInfoProto* info = NULL;
  53     switch (type) {
  54       case UNIFORM_MAP:
  55         info = proto->add_uniforms();
  56         break;
  57       case ATTRIB_MAP:
  58         info = proto->add_attribs();
  59         break;
  60       case VARYING_MAP:
  61         info = proto->add_varyings();
  62         break;
  63       default: NOTREACHED();
  64     }
  65
  66     info->set_key(iter->first);
  67     info->set_type(iter->second.type);
  68     info->set_size(iter->second.size);
  69     info->set_precision(iter->second.precision);
  70     info->set_static_use(iter->second.static_use);
  71     info->set_name(iter->second.name);
  72   }
  73 }
  74
  75 void RetrieveShaderInfo(const ShaderInfoProto& proto,
  76                         ShaderTranslator::VariableMap* map) {
  77   ShaderTranslator::VariableInfo info(
  78       proto.type(), proto.size(), proto.precision(),
  79       proto.static_use(), proto.name());
  80   (*map)[proto.key()] = info;
  81 }
  82
  83 void FillShaderProto(ShaderProto* proto, const char* sha,
  84                      const Shader* shader) {
  85   proto->set_sha(sha, gpu::gles2::ProgramCache::kHashLength);
  86   StoreShaderInfo(ATTRIB_MAP, proto, shader->attrib_map());
  87   StoreShaderInfo(UNIFORM_MAP, proto, shader->uniform_map());
  88   StoreShaderInfo(VARYING_MAP, proto, shader->varying_map());
  89 }
  90
  91 void RunShaderCallback(const ShaderCacheCallback& callback,
  92                        GpuProgramProto* proto,
  93                        std::string sha_string) {
  94   std::string shader;
  95   proto->SerializeToString(&shader);
  96
  97   std::string key;
  98   base::Base64Encode(sha_string, &key);
  99   callback.Run(key, shader);
 100 }
 101
 102 }  // namespace
 103
 104 MemoryProgramCache::MemoryProgramCache()
 105     : max_size_bytes_(GetCacheSizeBytes()),
 106       curr_size_bytes_(0),
 107       store_(ProgramMRUCache::NO_AUTO_EVICT) {
 108 }
 109
 110 MemoryProgramCache::MemoryProgramCache(const size_t max_cache_size_bytes)
 111     : max_size_bytes_(max_cache_size_bytes),
 112       curr_size_bytes_(0),
 113       store_(ProgramMRUCache::NO_AUTO_EVICT) {
 114 }
 115
 116 MemoryProgramCache::~MemoryProgramCache() {}
 117
 118 void MemoryProgramCache::ClearBackend() {
 119   store_.Clear();
 120   DCHECK_EQ(0U, curr_size_bytes_);
 121 }
 122
 123 ProgramCache::ProgramLoadResult MemoryProgramCache::LoadLinkedProgram(
 124     GLuint program,
 125     Shader* shader_a,
 126     const ShaderTranslatorInterface* translator_a,
 127     Shader* shader_b,
 128     const ShaderTranslatorInterface* translator_b,
 129     const LocationMap* bind_attrib_location_map,
 130     const ShaderCacheCallback& shader_callback) {
 131   char a_sha[kHashLength];
 132   char b_sha[kHashLength];
 133   DCHECK(shader_a && shader_a->signature_source() &&
 134          shader_b && shader_b->signature_source());
 135   ComputeShaderHash(
 136       *shader_a->signature_source(), translator_a, a_sha);
 137   ComputeShaderHash(
 138       *shader_b->signature_source(), translator_b, b_sha);
 139
 140   char sha[kHashLength];
 141   ComputeProgramHash(a_sha,
 142                      b_sha,
 143                      bind_attrib_location_map,
 144                      sha);
 145   const std::string sha_string(sha, kHashLength);
 146
 147   ProgramMRUCache::iterator found = store_.Get(sha_string);
 148   if (found == store_.end()) {
 149     return PROGRAM_LOAD_FAILURE;
 150   }
 151   const scoped_refptr<ProgramCacheValue> value = found->second;
 152   glProgramBinary(program,
 153                   value->format(),
 154                   static_cast<const GLvoid*>(value->data()),
 155                   value->length());
 156   GLint success = 0;
 157   glGetProgramiv(program, GL_LINK_STATUS, &success);
 158   if (success == GL_FALSE) {
 159     return PROGRAM_LOAD_FAILURE;
 160   }
 161   shader_a->set_attrib_map(value->attrib_map_0());
 162   shader_a->set_uniform_map(value->uniform_map_0());
 163   shader_a->set_varying_map(value->varying_map_0());
 164   shader_b->set_attrib_map(value->attrib_map_1());
 165   shader_b->set_uniform_map(value->uniform_map_1());
 166   shader_b->set_varying_map(value->varying_map_1());
 167
 168   if (!shader_callback.is_null() &&
 169       !CommandLine::ForCurrentProcess()->HasSwitch(
 170           switches::kDisableGpuShaderDiskCache)) {
 171     scoped_ptr<GpuProgramProto> proto(
 172         GpuProgramProto::default_instance().New());
 173     proto->set_sha(sha, kHashLength);
 174     proto->set_format(value->format());
 175     proto->set_program(value->data(), value->length());
 176
 177     FillShaderProto(proto->mutable_vertex_shader(), a_sha, shader_a);
 178     FillShaderProto(proto->mutable_fragment_shader(), b_sha, shader_b);
 179     RunShaderCallback(shader_callback, proto.get(), sha_string);
 180   }
 181
 182   return PROGRAM_LOAD_SUCCESS;
 183 }
 184
 185 void MemoryProgramCache::SaveLinkedProgram(
 186     GLuint program,
 187     const Shader* shader_a,
 188     const ShaderTranslatorInterface* translator_a,
 189     const Shader* shader_b,
 190     const ShaderTranslatorInterface* translator_b,
 191     const LocationMap* bind_attrib_location_map,
 192     const ShaderCacheCallback& shader_callback) {
 193   GLenum format;
 194   GLsizei length = 0;
 195   glGetProgramiv(program, GL_PROGRAM_BINARY_LENGTH_OES, &length);
 196   if (length == 0 || static_cast<unsigned int>(length) > max_size_bytes_) {
 197     return;
 198   }
 199   scoped_ptr<char[]> binary(new char[length]);
 200   glGetProgramBinary(program,
 201                      length,
 202                      NULL,
 203                      &format,
 204                      binary.get());
 205   UMA_HISTOGRAM_COUNTS("GPU.ProgramCache.ProgramBinarySizeBytes", length);
 206
 207   char a_sha[kHashLength];
 208   char b_sha[kHashLength];
 209   DCHECK(shader_a && shader_a->signature_source() &&
 210          shader_b && shader_b->signature_source());
 211   ComputeShaderHash(
 212       *shader_a->signature_source(), translator_a, a_sha);
 213   ComputeShaderHash(
 214       *shader_b->signature_source(), translator_b, b_sha);
 215
 216   char sha[kHashLength];
 217   ComputeProgramHash(a_sha,
 218                      b_sha,
 219                      bind_attrib_location_map,
 220                      sha);
 221   const std::string sha_string(sha, sizeof(sha));
 222
 223   UMA_HISTOGRAM_COUNTS("GPU.ProgramCache.MemorySizeBeforeKb",
 224                        curr_size_bytes_ / 1024);
 225
 226   // Evict any cached program with the same key in favor of the least recently
 227   // accessed.
 228   ProgramMRUCache::iterator existing = store_.Peek(sha_string);
 229   if(existing != store_.end())
 230     store_.Erase(existing);
 231
 232   while (curr_size_bytes_ + length > max_size_bytes_) {
 233     DCHECK(!store_.empty());
 234     store_.Erase(store_.rbegin());
 235   }
 236
 237   if (!shader_callback.is_null() &&
 238       !CommandLine::ForCurrentProcess()->HasSwitch(
 239           switches::kDisableGpuShaderDiskCache)) {
 240     scoped_ptr<GpuProgramProto> proto(
 241         GpuProgramProto::default_instance().New());
 242     proto->set_sha(sha, kHashLength);
 243     proto->set_format(format);
 244     proto->set_program(binary.get(), length);
 245
 246     FillShaderProto(proto->mutable_vertex_shader(), a_sha, shader_a);
 247     FillShaderProto(proto->mutable_fragment_shader(), b_sha, shader_b);
 248     RunShaderCallback(shader_callback, proto.get(), sha_string);
 249   }
 250
 251   store_.Put(sha_string,
 252              new ProgramCacheValue(length,
 253                                    format,
 254                                    binary.release(),
 255                                    sha_string,
 256                                    a_sha,
 257                                    shader_a->attrib_map(),
 258                                    shader_a->uniform_map(),
 259                                    shader_a->varying_map(),
 260                                    b_sha,
 261                                    shader_b->attrib_map(),
 262                                    shader_b->uniform_map(),
 263                                    shader_b->varying_map(),
 264                                    this));
 265
 266   UMA_HISTOGRAM_COUNTS("GPU.ProgramCache.MemorySizeAfterKb",
 267                        curr_size_bytes_ / 1024);
 268 }
 269
 270 void MemoryProgramCache::LoadProgram(const std::string& program) {
 271   scoped_ptr<GpuProgramProto> proto(GpuProgramProto::default_instance().New());
 272   if (proto->ParseFromString(program)) {
 273     ShaderTranslator::VariableMap vertex_attribs;
 274     ShaderTranslator::VariableMap vertex_uniforms;
 275     ShaderTranslator::VariableMap vertex_varyings;
 276
 277     for (int i = 0; i < proto->vertex_shader().attribs_size(); i++) {
 278       RetrieveShaderInfo(proto->vertex_shader().attribs(i), &vertex_attribs);
 279     }
 280
 281     for (int i = 0; i < proto->vertex_shader().uniforms_size(); i++) {
 282       RetrieveShaderInfo(proto->vertex_shader().uniforms(i), &vertex_uniforms);
 283     }
 284
 285     for (int i = 0; i < proto->vertex_shader().varyings_size(); i++) {
 286       RetrieveShaderInfo(proto->vertex_shader().varyings(i), &vertex_varyings);
 287     }
 288
 289     ShaderTranslator::VariableMap fragment_attribs;
 290     ShaderTranslator::VariableMap fragment_uniforms;
 291     ShaderTranslator::VariableMap fragment_varyings;
 292
 293     for (int i = 0; i < proto->fragment_shader().attribs_size(); i++) {
 294       RetrieveShaderInfo(proto->fragment_shader().attribs(i),
 295                          &fragment_attribs);
 296     }
 297
 298     for (int i = 0; i < proto->fragment_shader().uniforms_size(); i++) {
 299       RetrieveShaderInfo(proto->fragment_shader().uniforms(i),
 300                          &fragment_uniforms);
 301     }
 302
 303     for (int i = 0; i < proto->fragment_shader().varyings_size(); i++) {
 304       RetrieveShaderInfo(proto->fragment_shader().varyings(i),
 305                          &fragment_varyings);
 306     }
 307
 308     scoped_ptr<char[]> binary(new char[proto->program().length()]);
 309     memcpy(binary.get(), proto->program().c_str(), proto->program().length());
 310
 311     store_.Put(proto->sha(),
 312                new ProgramCacheValue(proto->program().length(),
 313                                      proto->format(),
 314                                      binary.release(),
 315                                      proto->sha(),
 316                                      proto->vertex_shader().sha().c_str(),
 317                                      vertex_attribs,
 318                                      vertex_uniforms,
 319                                      vertex_varyings,
 320                                      proto->fragment_shader().sha().c_str(),
 321                                      fragment_attribs,
 322                                      fragment_uniforms,
 323                                      fragment_varyings,
 324                                      this));
 325
 326     UMA_HISTOGRAM_COUNTS("GPU.ProgramCache.MemorySizeAfterKb",
 327                          curr_size_bytes_ / 1024);
 328   } else {
 329     LOG(ERROR) << "Failed to parse proto file.";
 330   }
 331 }
 332
 333 MemoryProgramCache::ProgramCacheValue::ProgramCacheValue(
 334     GLsizei length,
 335     GLenum format,
 336     const char* data,
 337     const std::string& program_hash,
 338     const char* shader_0_hash,
 339     const ShaderTranslator::VariableMap& attrib_map_0,
 340     const ShaderTranslator::VariableMap& uniform_map_0,
 341     const ShaderTranslator::VariableMap& varying_map_0,
 342     const char* shader_1_hash,
 343     const ShaderTranslator::VariableMap& attrib_map_1,
 344     const ShaderTranslator::VariableMap& uniform_map_1,
 345     const ShaderTranslator::VariableMap& varying_map_1,
 346     MemoryProgramCache* program_cache)
 347     : length_(length),
 348       format_(format),
 349       data_(data),
 350       program_hash_(program_hash),
 351       shader_0_hash_(shader_0_hash, kHashLength),
 352       attrib_map_0_(attrib_map_0),
 353       uniform_map_0_(uniform_map_0),
 354       varying_map_0_(varying_map_0),
 355       shader_1_hash_(shader_1_hash, kHashLength),
 356       attrib_map_1_(attrib_map_1),
 357       uniform_map_1_(uniform_map_1),
 358       varying_map_1_(varying_map_1),
 359       program_cache_(program_cache) {
 360   program_cache_->curr_size_bytes_ += length_;
 361   program_cache_->LinkedProgramCacheSuccess(program_hash);
 362 }
 363
 364 MemoryProgramCache::ProgramCacheValue::~ProgramCacheValue() {
 365   program_cache_->curr_size_bytes_ -= length_;
 366   program_cache_->Evict(program_hash_);
 367 }
 368
 369 }  // namespace gles2
 370 }  // namespace gpu