gpu/blink/webgraphicscontext3d_impl.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/blink/webgraphicscontext3d_impl.h"
   6
   7 #include "base/atomicops.h"
   8 #include "base/lazy_instance.h"
   9 #include "base/logging.h"
  10 #include "gpu/GLES2/gl2extchromium.h"
  11 #include "gpu/command_buffer/client/gles2_implementation.h"
  12 #include "gpu/command_buffer/client/gles2_lib.h"
  13 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
  14 #include "gpu/skia_bindings/gl_bindings_skia_cmd_buffer.h"
  15
  16 #include "third_party/khronos/GLES2/gl2.h"
  17 #ifndef GL_GLEXT_PROTOTYPES
  18 #define GL_GLEXT_PROTOTYPES 1
  19 #endif
  20 #include "third_party/khronos/GLES2/gl2ext.h"
  21
  22 using blink::WGC3Dbitfield;
  23 using blink::WGC3Dboolean;
  24 using blink::WGC3Dbyte;
  25 using blink::WGC3Dchar;
  26 using blink::WGC3Dclampf;
  27 using blink::WGC3Denum;
  28 using blink::WGC3Dfloat;
  29 using blink::WGC3Dint;
  30 using blink::WGC3Dintptr;
  31 using blink::WGC3Dsizei;
  32 using blink::WGC3Dsizeiptr;
  33 using blink::WGC3Dint64;
  34 using blink::WGC3Duint64;
  35 using blink::WGC3Duint;
  36 using blink::WebGLId;
  37 using blink::WGC3Dsync;
  38
  39 namespace gpu_blink {
  40
  41 namespace {
  42
  43 uint32_t GenFlushID() {
  44   static base::subtle::Atomic32 flush_id = 0;
  45
  46   base::subtle::Atomic32 my_id = base::subtle::Barrier_AtomicIncrement(
  47       &flush_id, 1);
  48   return static_cast<uint32_t>(my_id);
  49 }
  50
  51 } // namespace anonymous
  52
  53 class WebGraphicsContext3DErrorMessageCallback
  54     : public ::gpu::gles2::GLES2ImplementationErrorMessageCallback {
  55  public:
  56   WebGraphicsContext3DErrorMessageCallback(
  57       WebGraphicsContext3DImpl* context)
  58       : graphics_context_(context) {
  59   }
  60
  61   void OnErrorMessage(const char* msg, int id) override;
  62
  63  private:
  64   WebGraphicsContext3DImpl* graphics_context_;
  65
  66   DISALLOW_COPY_AND_ASSIGN(WebGraphicsContext3DErrorMessageCallback);
  67 };
  68
  69 void WebGraphicsContext3DErrorMessageCallback::OnErrorMessage(
  70     const char* msg, int id) {
  71   graphics_context_->OnErrorMessage(msg, id);
  72 }
  73
  74 // Helper macros to reduce the amount of code.
  75
  76 #define DELEGATE_TO_GL(name, glname)                                    \
  77 void WebGraphicsContext3DImpl::name() {                                 \
  78   gl_->glname();                                                        \
  79 }
  80
  81 #define DELEGATE_TO_GL_R(name, glname, rt)                              \
  82 rt WebGraphicsContext3DImpl::name() {                                   \
  83   return gl_->glname();                                                 \
  84 }
  85
  86 #define DELEGATE_TO_GL_1(name, glname, t1)                              \
  87 void WebGraphicsContext3DImpl::name(t1 a1) {                            \
  88   gl_->glname(a1);                                                      \
  89 }
  90
  91 #define DELEGATE_TO_GL_1R(name, glname, t1, rt)                         \
  92 rt WebGraphicsContext3DImpl::name(t1 a1) {                              \
  93   return gl_->glname(a1);                                               \
  94 }
  95
  96 #define DELEGATE_TO_GL_1RB(name, glname, t1, rt)                        \
  97 rt WebGraphicsContext3DImpl::name(t1 a1) {                              \
  98   return gl_->glname(a1) ? true : false;                                \
  99 }
 100
 101 #define DELEGATE_TO_GL_2(name, glname, t1, t2)                          \
 102 void WebGraphicsContext3DImpl::name(t1 a1, t2 a2) {                     \
 103   gl_->glname(a1, a2);                                                  \
 104 }
 105
 106 #define DELEGATE_TO_GL_2R(name, glname, t1, t2, rt)                     \
 107 rt WebGraphicsContext3DImpl::name(t1 a1, t2 a2) {                       \
 108   return gl_->glname(a1, a2);                                           \
 109 }
 110
 111 #define DELEGATE_TO_GL_3(name, glname, t1, t2, t3)                      \
 112 void WebGraphicsContext3DImpl::name(t1 a1, t2 a2, t3 a3) {              \
 113   gl_->glname(a1, a2, a3);                                              \
 114 }
 115
 116 #define DELEGATE_TO_GL_3R(name, glname, t1, t2, t3, rt)                 \
 117 rt WebGraphicsContext3DImpl::name(t1 a1, t2 a2, t3 a3) {                \
 118   return gl_->glname(a1, a2, a3);                                       \
 119 }
 120
 121 #define DELEGATE_TO_GL_4(name, glname, t1, t2, t3, t4)                  \
 122 void WebGraphicsContext3DImpl::name(t1 a1, t2 a2, t3 a3, t4 a4) {       \
 123   gl_->glname(a1, a2, a3, a4);                                          \
 124 }
 125
 126 #define DELEGATE_TO_GL_4R(name, glname, t1, t2, t3, t4, rt)             \
 127 rt WebGraphicsContext3DImpl::name(t1 a1, t2 a2, t3 a3, t4 a4) {         \
 128   return gl_->glname(a1, a2, a3, a4);                                   \
 129 }
 130
 131 #define DELEGATE_TO_GL_5(name, glname, t1, t2, t3, t4, t5)              \
 132 void WebGraphicsContext3DImpl::name(t1 a1, t2 a2, t3 a3, t4 a4, t5 a5) {\
 133                                                                         \
 134   gl_->glname(a1, a2, a3, a4, a5);                                      \
 135 }
 136
 137 #define DELEGATE_TO_GL_6(name, glname, t1, t2, t3, t4, t5, t6)          \
 138 void WebGraphicsContext3DImpl::name(t1 a1, t2 a2, t3 a3, t4 a4, t5 a5,  \
 139                                     t6 a6) {                            \
 140   gl_->glname(a1, a2, a3, a4, a5, a6);                                  \
 141 }
 142
 143 #define DELEGATE_TO_GL_7(name, glname, t1, t2, t3, t4, t5, t6, t7)      \
 144 void WebGraphicsContext3DImpl::name(t1 a1, t2 a2, t3 a3, t4 a4, t5 a5,  \
 145                                     t6 a6, t7 a7) {                     \
 146   gl_->glname(a1, a2, a3, a4, a5, a6, a7);                              \
 147 }
 148
 149 #define DELEGATE_TO_GL_8(name, glname, t1, t2, t3, t4, t5, t6, t7, t8)  \
 150 void WebGraphicsContext3DImpl::name(t1 a1, t2 a2, t3 a3, t4 a4, t5 a5,  \
 151                                     t6 a6, t7 a7, t8 a8) {              \
 152   gl_->glname(a1, a2, a3, a4, a5, a6, a7, a8);                          \
 153 }
 154
 155 #define DELEGATE_TO_GL_9(name, glname, t1, t2, t3, t4, t5, t6, t7, t8, t9) \
 156 void WebGraphicsContext3DImpl::name(t1 a1, t2 a2, t3 a3, t4 a4, t5 a5,  \
 157                                     t6 a6, t7 a7, t8 a8, t9 a9) {       \
 158   gl_->glname(a1, a2, a3, a4, a5, a6, a7, a8, a9);                      \
 159 }
 160
 161 #define DELEGATE_TO_GL_9R(name, glname, t1, t2, t3, t4, t5, t6, t7, t8, \
 162                           t9, rt)                                       \
 163 rt WebGraphicsContext3DImpl::name(t1 a1, t2 a2, t3 a3, t4 a4, t5 a5,    \
 164                                     t6 a6, t7 a7, t8 a8, t9 a9) {       \
 165   return gl_->glname(a1, a2, a3, a4, a5, a6, a7, a8, a9);               \
 166 }
 167
 168 #define DELEGATE_TO_GL_10(name, glname, t1, t2, t3, t4, t5, t6, t7, t8, \
 169                           t9, t10)                                      \
 170 void WebGraphicsContext3DImpl::name(t1 a1, t2 a2, t3 a3, t4 a4, t5 a5,  \
 171                                     t6 a6, t7 a7, t8 a8, t9 a9,         \
 172                                     t10 a10) {                          \
 173   gl_->glname(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10);                 \
 174 }
 175
 176 #define DELEGATE_TO_GL_11(name, glname, t1, t2, t3, t4, t5, t6, t7, t8, \
 177                           t9, t10, t11)                                 \
 178 void WebGraphicsContext3DImpl::name(t1 a1, t2 a2, t3 a3, t4 a4, t5 a5,  \
 179                                     t6 a6, t7 a7, t8 a8, t9 a9, t10 a10,\
 180                                     t11 a11) {                          \
 181   gl_->glname(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11);            \
 182 }
 183
 184 #define DELEGATE_TO_GL_12(name, glname, t1, t2, t3, t4, t5, t6, t7, t8, \
 185                           t9, t10, t11, t12)                            \
 186 void WebGraphicsContext3DImpl::name(t1 a1, t2 a2, t3 a3, t4 a4, t5 a5,  \
 187                                     t6 a6, t7 a7, t8 a8, t9 a9, t10 a10,\
 188                                     t11 a11, t12 a12) {                 \
 189   gl_->glname(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12);       \
 190 }
 191
 192 WebGraphicsContext3DImpl::WebGraphicsContext3DImpl()
 193     : initialized_(false),
 194       initialize_failed_(false),
 195       context_lost_callback_(0),
 196       error_message_callback_(0),
 197       gl_(NULL),
 198       flush_id_(0) {
 199 }
 200
 201 WebGraphicsContext3DImpl::~WebGraphicsContext3DImpl() {
 202
 203 }
 204
 205 void WebGraphicsContext3DImpl::synthesizeGLError(WGC3Denum error) {
 206   if (std::find(synthetic_errors_.begin(), synthetic_errors_.end(), error) ==
 207       synthetic_errors_.end()) {
 208     synthetic_errors_.push_back(error);
 209   }
 210 }
 211
 212 uint32_t WebGraphicsContext3DImpl::lastFlushID() {
 213   return flush_id_;
 214 }
 215
 216 DELEGATE_TO_GL_R(insertSyncPoint, InsertSyncPointCHROMIUM, unsigned int)
 217
 218 DELEGATE_TO_GL_3(reshapeWithScaleFactor, ResizeCHROMIUM, int, int, float)
 219
 220 DELEGATE_TO_GL_4R(mapBufferSubDataCHROMIUM, MapBufferSubDataCHROMIUM, WGC3Denum,
 221                   WGC3Dintptr, WGC3Dsizeiptr, WGC3Denum, void*)
 222
 223 DELEGATE_TO_GL_1(unmapBufferSubDataCHROMIUM, UnmapBufferSubDataCHROMIUM,
 224                  const void*)
 225
 226 DELEGATE_TO_GL_9R(mapTexSubImage2DCHROMIUM, MapTexSubImage2DCHROMIUM, WGC3Denum,
 227                   WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dsizei, WGC3Dsizei,
 228                   WGC3Denum, WGC3Denum, WGC3Denum, void*)
 229
 230 DELEGATE_TO_GL_1(unmapTexSubImage2DCHROMIUM, UnmapTexSubImage2DCHROMIUM,
 231                  const void*)
 232
 233 DELEGATE_TO_GL_3(discardFramebufferEXT, DiscardFramebufferEXT, WGC3Denum,
 234                  WGC3Dsizei, const WGC3Denum*)
 235
 236 blink::WebString WebGraphicsContext3DImpl::
 237     getRequestableExtensionsCHROMIUM() {
 238   return blink::WebString::fromUTF8(
 239       gl_->GetRequestableExtensionsCHROMIUM());
 240 }
 241
 242 DELEGATE_TO_GL_1(requestExtensionCHROMIUM, RequestExtensionCHROMIUM,
 243                  const char*)
 244
 245 void WebGraphicsContext3DImpl::blitFramebufferCHROMIUM(
 246     WGC3Dint srcX0, WGC3Dint srcY0, WGC3Dint srcX1, WGC3Dint srcY1,
 247     WGC3Dint dstX0, WGC3Dint dstY0, WGC3Dint dstX1, WGC3Dint dstY1,
 248     WGC3Dbitfield mask, WGC3Denum filter) {
 249   gl_->BlitFramebufferCHROMIUM(
 250       srcX0, srcY0, srcX1, srcY1,
 251       dstX0, dstY0, dstX1, dstY1,
 252       mask, filter);
 253 }
 254
 255 DELEGATE_TO_GL_5(renderbufferStorageMultisampleCHROMIUM,
 256                  RenderbufferStorageMultisampleCHROMIUM, WGC3Denum, WGC3Dsizei,
 257                  WGC3Denum, WGC3Dsizei, WGC3Dsizei)
 258
 259 DELEGATE_TO_GL_1(activeTexture, ActiveTexture, WGC3Denum)
 260
 261 DELEGATE_TO_GL_2(attachShader, AttachShader, WebGLId, WebGLId)
 262
 263 DELEGATE_TO_GL_3(bindAttribLocation, BindAttribLocation, WebGLId,
 264                  WGC3Duint, const WGC3Dchar*)
 265
 266 DELEGATE_TO_GL_2(bindBuffer, BindBuffer, WGC3Denum, WebGLId)
 267
 268 DELEGATE_TO_GL_2(bindFramebuffer, BindFramebuffer, WGC3Denum, WebGLId)
 269
 270 DELEGATE_TO_GL_2(bindRenderbuffer, BindRenderbuffer, WGC3Denum, WebGLId)
 271
 272 DELEGATE_TO_GL_2(bindTexture, BindTexture, WGC3Denum, WebGLId)
 273
 274 DELEGATE_TO_GL_4(blendColor, BlendColor,
 275                  WGC3Dclampf, WGC3Dclampf, WGC3Dclampf, WGC3Dclampf)
 276
 277 DELEGATE_TO_GL_1(blendEquation, BlendEquation, WGC3Denum)
 278
 279 DELEGATE_TO_GL_2(blendEquationSeparate, BlendEquationSeparate,
 280                  WGC3Denum, WGC3Denum)
 281
 282 DELEGATE_TO_GL_2(blendFunc, BlendFunc, WGC3Denum, WGC3Denum)
 283
 284 DELEGATE_TO_GL_4(blendFuncSeparate, BlendFuncSeparate,
 285                  WGC3Denum, WGC3Denum, WGC3Denum, WGC3Denum)
 286
 287 DELEGATE_TO_GL_4(bufferData, BufferData,
 288                  WGC3Denum, WGC3Dsizeiptr, const void*, WGC3Denum)
 289
 290 DELEGATE_TO_GL_4(bufferSubData, BufferSubData,
 291                  WGC3Denum, WGC3Dintptr, WGC3Dsizeiptr, const void*)
 292
 293 DELEGATE_TO_GL_1R(checkFramebufferStatus, CheckFramebufferStatus,
 294                   WGC3Denum, WGC3Denum)
 295
 296 DELEGATE_TO_GL_1(clear, Clear, WGC3Dbitfield)
 297
 298 DELEGATE_TO_GL_4(clearColor, ClearColor,
 299                  WGC3Dclampf, WGC3Dclampf, WGC3Dclampf, WGC3Dclampf)
 300
 301 DELEGATE_TO_GL_1(clearDepth, ClearDepthf, WGC3Dclampf)
 302
 303 DELEGATE_TO_GL_1(clearStencil, ClearStencil, WGC3Dint)
 304
 305 DELEGATE_TO_GL_4(colorMask, ColorMask,
 306                  WGC3Dboolean, WGC3Dboolean, WGC3Dboolean, WGC3Dboolean)
 307
 308 DELEGATE_TO_GL_1(compileShader, CompileShader, WebGLId)
 309
 310 DELEGATE_TO_GL_8(compressedTexImage2D, CompressedTexImage2D,
 311                  WGC3Denum, WGC3Dint, WGC3Denum, WGC3Dint, WGC3Dint,
 312                  WGC3Dsizei, WGC3Dsizei, const void*)
 313
 314 DELEGATE_TO_GL_9(compressedTexSubImage2D, CompressedTexSubImage2D,
 315                  WGC3Denum, WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dint,
 316                  WGC3Denum, WGC3Dsizei, const void*)
 317
 318 DELEGATE_TO_GL_8(copyTexImage2D, CopyTexImage2D,
 319                  WGC3Denum, WGC3Dint, WGC3Denum, WGC3Dint, WGC3Dint,
 320                  WGC3Dsizei, WGC3Dsizei, WGC3Dint)
 321
 322 DELEGATE_TO_GL_8(copyTexSubImage2D, CopyTexSubImage2D,
 323                  WGC3Denum, WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dint,
 324                  WGC3Dsizei, WGC3Dsizei)
 325
 326 DELEGATE_TO_GL_1(cullFace, CullFace, WGC3Denum)
 327
 328 DELEGATE_TO_GL_1(depthFunc, DepthFunc, WGC3Denum)
 329
 330 DELEGATE_TO_GL_1(depthMask, DepthMask, WGC3Dboolean)
 331
 332 DELEGATE_TO_GL_2(depthRange, DepthRangef, WGC3Dclampf, WGC3Dclampf)
 333
 334 DELEGATE_TO_GL_2(detachShader, DetachShader, WebGLId, WebGLId)
 335
 336 DELEGATE_TO_GL_1(disable, Disable, WGC3Denum)
 337
 338 DELEGATE_TO_GL_1(disableVertexAttribArray, DisableVertexAttribArray,
 339                  WGC3Duint)
 340
 341 DELEGATE_TO_GL_3(drawArrays, DrawArrays, WGC3Denum, WGC3Dint, WGC3Dsizei)
 342
 343 void WebGraphicsContext3DImpl::drawElements(WGC3Denum mode,
 344                                                          WGC3Dsizei count,
 345                                                          WGC3Denum type,
 346                                                          WGC3Dintptr offset) {
 347   gl_->DrawElements(
 348       mode, count, type,
 349       reinterpret_cast<void*>(static_cast<intptr_t>(offset)));
 350 }
 351
 352 DELEGATE_TO_GL_1(enable, Enable, WGC3Denum)
 353
 354 DELEGATE_TO_GL_1(enableVertexAttribArray, EnableVertexAttribArray,
 355                  WGC3Duint)
 356
 357 void WebGraphicsContext3DImpl::finish() {
 358   flush_id_ = GenFlushID();
 359   gl_->Finish();
 360 }
 361
 362 void WebGraphicsContext3DImpl::flush() {
 363   flush_id_ = GenFlushID();
 364   gl_->Flush();
 365 }
 366
 367 DELEGATE_TO_GL_4(framebufferRenderbuffer, FramebufferRenderbuffer,
 368                  WGC3Denum, WGC3Denum, WGC3Denum, WebGLId)
 369
 370 DELEGATE_TO_GL_5(framebufferTexture2D, FramebufferTexture2D,
 371                  WGC3Denum, WGC3Denum, WGC3Denum, WebGLId, WGC3Dint)
 372
 373 DELEGATE_TO_GL_1(frontFace, FrontFace, WGC3Denum)
 374
 375 DELEGATE_TO_GL_1(generateMipmap, GenerateMipmap, WGC3Denum)
 376
 377 bool WebGraphicsContext3DImpl::getActiveAttrib(
 378     WebGLId program, WGC3Duint index, ActiveInfo& info) {
 379   if (!program) {
 380     synthesizeGLError(GL_INVALID_VALUE);
 381     return false;
 382   }
 383   GLint max_name_length = -1;
 384   gl_->GetProgramiv(
 385       program, GL_ACTIVE_ATTRIBUTE_MAX_LENGTH, &max_name_length);
 386   if (max_name_length < 0)
 387     return false;
 388   if (max_name_length == 0) {
 389     // No active attributes exist.
 390     synthesizeGLError(GL_INVALID_VALUE);
 391     return false;
 392   }
 393   scoped_ptr<GLchar[]> name(new GLchar[max_name_length]);
 394   GLsizei length = 0;
 395   GLint size = -1;
 396   GLenum type = 0;
 397   gl_->GetActiveAttrib(
 398       program, index, max_name_length, &length, &size, &type, name.get());
 399   if (size < 0) {
 400     return false;
 401   }
 402   info.name = blink::WebString::fromUTF8(name.get(), length);
 403   info.type = type;
 404   info.size = size;
 405   return true;
 406 }
 407
 408 bool WebGraphicsContext3DImpl::getActiveUniform(
 409     WebGLId program, WGC3Duint index, ActiveInfo& info) {
 410   GLint max_name_length = -1;
 411   gl_->GetProgramiv(
 412       program, GL_ACTIVE_UNIFORM_MAX_LENGTH, &max_name_length);
 413   if (max_name_length < 0)
 414     return false;
 415   if (max_name_length == 0) {
 416     // No active uniforms exist.
 417     synthesizeGLError(GL_INVALID_VALUE);
 418     return false;
 419   }
 420   scoped_ptr<GLchar[]> name(new GLchar[max_name_length]);
 421   GLsizei length = 0;
 422   GLint size = -1;
 423   GLenum type = 0;
 424   gl_->GetActiveUniform(
 425       program, index, max_name_length, &length, &size, &type, name.get());
 426   if (size < 0) {
 427     return false;
 428   }
 429   info.name = blink::WebString::fromUTF8(name.get(), length);
 430   info.type = type;
 431   info.size = size;
 432   return true;
 433 }
 434
 435 DELEGATE_TO_GL_4(getAttachedShaders, GetAttachedShaders,
 436                  WebGLId, WGC3Dsizei, WGC3Dsizei*, WebGLId*)
 437
 438 DELEGATE_TO_GL_2R(getAttribLocation, GetAttribLocation,
 439                   WebGLId, const WGC3Dchar*, WGC3Dint)
 440
 441 DELEGATE_TO_GL_2(getBooleanv, GetBooleanv, WGC3Denum, WGC3Dboolean*)
 442
 443 DELEGATE_TO_GL_3(getBufferParameteriv, GetBufferParameteriv,
 444                  WGC3Denum, WGC3Denum, WGC3Dint*)
 445
 446 WGC3Denum WebGraphicsContext3DImpl::getError() {
 447   if (!synthetic_errors_.empty()) {
 448     std::vector<WGC3Denum>::iterator iter = synthetic_errors_.begin();
 449     WGC3Denum err = *iter;
 450     synthetic_errors_.erase(iter);
 451     return err;
 452   }
 453
 454   return gl_->GetError();
 455 }
 456
 457 DELEGATE_TO_GL_2(getFloatv, GetFloatv, WGC3Denum, WGC3Dfloat*)
 458
 459 DELEGATE_TO_GL_4(getFramebufferAttachmentParameteriv,
 460                  GetFramebufferAttachmentParameteriv,
 461                  WGC3Denum, WGC3Denum, WGC3Denum, WGC3Dint*)
 462
 463 DELEGATE_TO_GL_2(getIntegerv, GetIntegerv, WGC3Denum, WGC3Dint*)
 464
 465 DELEGATE_TO_GL_2(getInteger64v, GetInteger64v, WGC3Denum, WGC3Dint64*)
 466
 467 DELEGATE_TO_GL_3(getProgramiv, GetProgramiv, WebGLId, WGC3Denum, WGC3Dint*)
 468
 469 blink::WebString WebGraphicsContext3DImpl::getProgramInfoLog(
 470     WebGLId program) {
 471   GLint logLength = 0;
 472   gl_->GetProgramiv(program, GL_INFO_LOG_LENGTH, &logLength);
 473   if (!logLength)
 474     return blink::WebString();
 475   scoped_ptr<GLchar[]> log(new GLchar[logLength]);
 476   if (!log)
 477     return blink::WebString();
 478   GLsizei returnedLogLength = 0;
 479   gl_->GetProgramInfoLog(
 480       program, logLength, &returnedLogLength, log.get());
 481   DCHECK_EQ(logLength, returnedLogLength + 1);
 482   blink::WebString res =
 483       blink::WebString::fromUTF8(log.get(), returnedLogLength);
 484   return res;
 485 }
 486
 487 DELEGATE_TO_GL_3(getRenderbufferParameteriv, GetRenderbufferParameteriv,
 488                  WGC3Denum, WGC3Denum, WGC3Dint*)
 489
 490 DELEGATE_TO_GL_3(getShaderiv, GetShaderiv, WebGLId, WGC3Denum, WGC3Dint*)
 491
 492 blink::WebString WebGraphicsContext3DImpl::getShaderInfoLog(
 493     WebGLId shader) {
 494   GLint logLength = 0;
 495   gl_->GetShaderiv(shader, GL_INFO_LOG_LENGTH, &logLength);
 496   if (!logLength)
 497     return blink::WebString();
 498   scoped_ptr<GLchar[]> log(new GLchar[logLength]);
 499   if (!log)
 500     return blink::WebString();
 501   GLsizei returnedLogLength = 0;
 502   gl_->GetShaderInfoLog(
 503       shader, logLength, &returnedLogLength, log.get());
 504   DCHECK_EQ(logLength, returnedLogLength + 1);
 505   blink::WebString res =
 506       blink::WebString::fromUTF8(log.get(), returnedLogLength);
 507   return res;
 508 }
 509
 510 DELEGATE_TO_GL_4(getShaderPrecisionFormat, GetShaderPrecisionFormat,
 511                  WGC3Denum, WGC3Denum, WGC3Dint*, WGC3Dint*)
 512
 513 blink::WebString WebGraphicsContext3DImpl::getShaderSource(
 514     WebGLId shader) {
 515   GLint logLength = 0;
 516   gl_->GetShaderiv(shader, GL_SHADER_SOURCE_LENGTH, &logLength);
 517   if (!logLength)
 518     return blink::WebString();
 519   scoped_ptr<GLchar[]> log(new GLchar[logLength]);
 520   if (!log)
 521     return blink::WebString();
 522   GLsizei returnedLogLength = 0;
 523   gl_->GetShaderSource(
 524       shader, logLength, &returnedLogLength, log.get());
 525   if (!returnedLogLength)
 526     return blink::WebString();
 527   DCHECK_EQ(logLength, returnedLogLength + 1);
 528   blink::WebString res =
 529       blink::WebString::fromUTF8(log.get(), returnedLogLength);
 530   return res;
 531 }
 532
 533 blink::WebString WebGraphicsContext3DImpl::
 534     getTranslatedShaderSourceANGLE(WebGLId shader) {
 535   GLint logLength = 0;
 536   gl_->GetShaderiv(
 537       shader, GL_TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE, &logLength);
 538   if (!logLength)
 539     return blink::WebString();
 540   scoped_ptr<GLchar[]> log(new GLchar[logLength]);
 541   if (!log)
 542     return blink::WebString();
 543   GLsizei returnedLogLength = 0;
 544   gl_->GetTranslatedShaderSourceANGLE(
 545       shader, logLength, &returnedLogLength, log.get());
 546   if (!returnedLogLength)
 547     return blink::WebString();
 548   DCHECK_EQ(logLength, returnedLogLength + 1);
 549   blink::WebString res =
 550       blink::WebString::fromUTF8(log.get(), returnedLogLength);
 551   return res;
 552 }
 553
 554 blink::WebString WebGraphicsContext3DImpl::getString(
 555     WGC3Denum name) {
 556   return blink::WebString::fromUTF8(
 557       reinterpret_cast<const char*>(gl_->GetString(name)));
 558 }
 559
 560 DELEGATE_TO_GL_3(getTexParameterfv, GetTexParameterfv,
 561                  WGC3Denum, WGC3Denum, WGC3Dfloat*)
 562
 563 DELEGATE_TO_GL_3(getTexParameteriv, GetTexParameteriv,
 564                  WGC3Denum, WGC3Denum, WGC3Dint*)
 565
 566 DELEGATE_TO_GL_3(getUniformfv, GetUniformfv, WebGLId, WGC3Dint, WGC3Dfloat*)
 567
 568 DELEGATE_TO_GL_3(getUniformiv, GetUniformiv, WebGLId, WGC3Dint, WGC3Dint*)
 569
 570 DELEGATE_TO_GL_2R(getUniformLocation, GetUniformLocation,
 571                   WebGLId, const WGC3Dchar*, WGC3Dint)
 572
 573 DELEGATE_TO_GL_3(getVertexAttribfv, GetVertexAttribfv,
 574                  WGC3Duint, WGC3Denum, WGC3Dfloat*)
 575
 576 DELEGATE_TO_GL_3(getVertexAttribiv, GetVertexAttribiv,
 577                  WGC3Duint, WGC3Denum, WGC3Dint*)
 578
 579 WGC3Dsizeiptr WebGraphicsContext3DImpl::getVertexAttribOffset(
 580     WGC3Duint index, WGC3Denum pname) {
 581   GLvoid* value = NULL;
 582   // NOTE: If pname is ever a value that returns more then 1 element
 583   // this will corrupt memory.
 584   gl_->GetVertexAttribPointerv(index, pname, &value);
 585   return static_cast<WGC3Dsizeiptr>(reinterpret_cast<intptr_t>(value));
 586 }
 587
 588 DELEGATE_TO_GL_2(hint, Hint, WGC3Denum, WGC3Denum)
 589
 590 DELEGATE_TO_GL_1RB(isBuffer, IsBuffer, WebGLId, WGC3Dboolean)
 591
 592 DELEGATE_TO_GL_1RB(isEnabled, IsEnabled, WGC3Denum, WGC3Dboolean)
 593
 594 DELEGATE_TO_GL_1RB(isFramebuffer, IsFramebuffer, WebGLId, WGC3Dboolean)
 595
 596 DELEGATE_TO_GL_1RB(isProgram, IsProgram, WebGLId, WGC3Dboolean)
 597
 598 DELEGATE_TO_GL_1RB(isRenderbuffer, IsRenderbuffer, WebGLId, WGC3Dboolean)
 599
 600 DELEGATE_TO_GL_1RB(isShader, IsShader, WebGLId, WGC3Dboolean)
 601
 602 DELEGATE_TO_GL_1RB(isTexture, IsTexture, WebGLId, WGC3Dboolean)
 603
 604 DELEGATE_TO_GL_1(lineWidth, LineWidth, WGC3Dfloat)
 605
 606 DELEGATE_TO_GL_1(linkProgram, LinkProgram, WebGLId)
 607
 608 DELEGATE_TO_GL_2(pixelStorei, PixelStorei, WGC3Denum, WGC3Dint)
 609
 610 DELEGATE_TO_GL_2(polygonOffset, PolygonOffset, WGC3Dfloat, WGC3Dfloat)
 611
 612 DELEGATE_TO_GL_7(readPixels, ReadPixels,
 613                  WGC3Dint, WGC3Dint, WGC3Dsizei, WGC3Dsizei, WGC3Denum,
 614                  WGC3Denum, void*)
 615
 616 DELEGATE_TO_GL_4(renderbufferStorage, RenderbufferStorage,
 617                  WGC3Denum, WGC3Denum, WGC3Dsizei, WGC3Dsizei)
 618
 619 DELEGATE_TO_GL_2(sampleCoverage, SampleCoverage, WGC3Dfloat, WGC3Dboolean)
 620
 621 DELEGATE_TO_GL_4(scissor, Scissor, WGC3Dint, WGC3Dint, WGC3Dsizei, WGC3Dsizei)
 622
 623 void WebGraphicsContext3DImpl::shaderSource(
 624     WebGLId shader, const WGC3Dchar* string) {
 625   GLint length = strlen(string);
 626   gl_->ShaderSource(shader, 1, &string, &length);
 627 }
 628
 629 DELEGATE_TO_GL_3(stencilFunc, StencilFunc, WGC3Denum, WGC3Dint, WGC3Duint)
 630
 631 DELEGATE_TO_GL_4(stencilFuncSeparate, StencilFuncSeparate,
 632                  WGC3Denum, WGC3Denum, WGC3Dint, WGC3Duint)
 633
 634 DELEGATE_TO_GL_1(stencilMask, StencilMask, WGC3Duint)
 635
 636 DELEGATE_TO_GL_2(stencilMaskSeparate, StencilMaskSeparate,
 637                  WGC3Denum, WGC3Duint)
 638
 639 DELEGATE_TO_GL_3(stencilOp, StencilOp,
 640                  WGC3Denum, WGC3Denum, WGC3Denum)
 641
 642 DELEGATE_TO_GL_4(stencilOpSeparate, StencilOpSeparate,
 643                  WGC3Denum, WGC3Denum, WGC3Denum, WGC3Denum)
 644
 645 DELEGATE_TO_GL_9(texImage2D, TexImage2D,
 646                  WGC3Denum, WGC3Dint, WGC3Denum, WGC3Dsizei, WGC3Dsizei,
 647                  WGC3Dint, WGC3Denum, WGC3Denum, const void*)
 648
 649 DELEGATE_TO_GL_3(texParameterf, TexParameterf,
 650                  WGC3Denum, WGC3Denum, WGC3Dfloat);
 651
 652 DELEGATE_TO_GL_3(texParameteri, TexParameteri,
 653                  WGC3Denum, WGC3Denum, WGC3Dint);
 654
 655 DELEGATE_TO_GL_9(texSubImage2D, TexSubImage2D,
 656                  WGC3Denum, WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dsizei,
 657                  WGC3Dsizei, WGC3Denum, WGC3Denum, const void*)
 658
 659 DELEGATE_TO_GL_2(uniform1f, Uniform1f, WGC3Dint, WGC3Dfloat)
 660
 661 DELEGATE_TO_GL_3(uniform1fv, Uniform1fv, WGC3Dint, WGC3Dsizei,
 662                  const WGC3Dfloat*)
 663
 664 DELEGATE_TO_GL_2(uniform1i, Uniform1i, WGC3Dint, WGC3Dint)
 665
 666 DELEGATE_TO_GL_3(uniform1iv, Uniform1iv, WGC3Dint, WGC3Dsizei, const WGC3Dint*)
 667
 668 DELEGATE_TO_GL_3(uniform2f, Uniform2f, WGC3Dint, WGC3Dfloat, WGC3Dfloat)
 669
 670 DELEGATE_TO_GL_3(uniform2fv, Uniform2fv, WGC3Dint, WGC3Dsizei,
 671                  const WGC3Dfloat*)
 672
 673 DELEGATE_TO_GL_3(uniform2i, Uniform2i, WGC3Dint, WGC3Dint, WGC3Dint)
 674
 675 DELEGATE_TO_GL_3(uniform2iv, Uniform2iv, WGC3Dint, WGC3Dsizei, const WGC3Dint*)
 676
 677 DELEGATE_TO_GL_4(uniform3f, Uniform3f, WGC3Dint,
 678                  WGC3Dfloat, WGC3Dfloat, WGC3Dfloat)
 679
 680 DELEGATE_TO_GL_3(uniform3fv, Uniform3fv, WGC3Dint, WGC3Dsizei,
 681                  const WGC3Dfloat*)
 682
 683 DELEGATE_TO_GL_4(uniform3i, Uniform3i, WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dint)
 684
 685 DELEGATE_TO_GL_3(uniform3iv, Uniform3iv, WGC3Dint, WGC3Dsizei, const WGC3Dint*)
 686
 687 DELEGATE_TO_GL_5(uniform4f, Uniform4f, WGC3Dint,
 688                  WGC3Dfloat, WGC3Dfloat, WGC3Dfloat, WGC3Dfloat)
 689
 690 DELEGATE_TO_GL_3(uniform4fv, Uniform4fv, WGC3Dint, WGC3Dsizei,
 691                  const WGC3Dfloat*)
 692
 693 DELEGATE_TO_GL_5(uniform4i, Uniform4i, WGC3Dint,
 694                  WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dint)
 695
 696 DELEGATE_TO_GL_3(uniform4iv, Uniform4iv, WGC3Dint, WGC3Dsizei, const WGC3Dint*)
 697
 698 DELEGATE_TO_GL_4(uniformMatrix2fv, UniformMatrix2fv,
 699                  WGC3Dint, WGC3Dsizei, WGC3Dboolean, const WGC3Dfloat*)
 700
 701 DELEGATE_TO_GL_4(uniformMatrix3fv, UniformMatrix3fv,
 702                  WGC3Dint, WGC3Dsizei, WGC3Dboolean, const WGC3Dfloat*)
 703
 704 DELEGATE_TO_GL_4(uniformMatrix4fv, UniformMatrix4fv,
 705                  WGC3Dint, WGC3Dsizei, WGC3Dboolean, const WGC3Dfloat*)
 706
 707 DELEGATE_TO_GL_1(useProgram, UseProgram, WebGLId)
 708
 709 DELEGATE_TO_GL_1(validateProgram, ValidateProgram, WebGLId)
 710
 711 DELEGATE_TO_GL_2(vertexAttrib1f, VertexAttrib1f, WGC3Duint, WGC3Dfloat)
 712
 713 DELEGATE_TO_GL_2(vertexAttrib1fv, VertexAttrib1fv, WGC3Duint,
 714                  const WGC3Dfloat*)
 715
 716 DELEGATE_TO_GL_3(vertexAttrib2f, VertexAttrib2f, WGC3Duint,
 717                  WGC3Dfloat, WGC3Dfloat)
 718
 719 DELEGATE_TO_GL_2(vertexAttrib2fv, VertexAttrib2fv, WGC3Duint,
 720                  const WGC3Dfloat*)
 721
 722 DELEGATE_TO_GL_4(vertexAttrib3f, VertexAttrib3f, WGC3Duint,
 723                  WGC3Dfloat, WGC3Dfloat, WGC3Dfloat)
 724
 725 DELEGATE_TO_GL_2(vertexAttrib3fv, VertexAttrib3fv, WGC3Duint,
 726                  const WGC3Dfloat*)
 727
 728 DELEGATE_TO_GL_5(vertexAttrib4f, VertexAttrib4f, WGC3Duint,
 729                  WGC3Dfloat, WGC3Dfloat, WGC3Dfloat, WGC3Dfloat)
 730
 731 DELEGATE_TO_GL_2(vertexAttrib4fv, VertexAttrib4fv, WGC3Duint,
 732                  const WGC3Dfloat*)
 733
 734 void WebGraphicsContext3DImpl::vertexAttribPointer(
 735     WGC3Duint index, WGC3Dint size, WGC3Denum type, WGC3Dboolean normalized,
 736     WGC3Dsizei stride, WGC3Dintptr offset) {
 737   gl_->VertexAttribPointer(
 738       index, size, type, normalized, stride,
 739       reinterpret_cast<void*>(static_cast<intptr_t>(offset)));
 740 }
 741
 742 DELEGATE_TO_GL_4(viewport, Viewport,
 743                  WGC3Dint, WGC3Dint, WGC3Dsizei, WGC3Dsizei)
 744
 745 WebGLId WebGraphicsContext3DImpl::createBuffer() {
 746   GLuint o;
 747   gl_->GenBuffers(1, &o);
 748   return o;
 749 }
 750
 751 WebGLId WebGraphicsContext3DImpl::createFramebuffer() {
 752   GLuint o = 0;
 753   gl_->GenFramebuffers(1, &o);
 754   return o;
 755 }
 756
 757 WebGLId WebGraphicsContext3DImpl::createRenderbuffer() {
 758   GLuint o;
 759   gl_->GenRenderbuffers(1, &o);
 760   return o;
 761 }
 762
 763 WebGLId WebGraphicsContext3DImpl::createTexture() {
 764   GLuint o;
 765   gl_->GenTextures(1, &o);
 766   return o;
 767 }
 768
 769 void WebGraphicsContext3DImpl::deleteBuffer(WebGLId buffer) {
 770   gl_->DeleteBuffers(1, &buffer);
 771 }
 772
 773 void WebGraphicsContext3DImpl::deleteFramebuffer(
 774     WebGLId framebuffer) {
 775   gl_->DeleteFramebuffers(1, &framebuffer);
 776 }
 777
 778 void WebGraphicsContext3DImpl::deleteRenderbuffer(
 779     WebGLId renderbuffer) {
 780   gl_->DeleteRenderbuffers(1, &renderbuffer);
 781 }
 782
 783 void WebGraphicsContext3DImpl::deleteTexture(WebGLId texture) {
 784   gl_->DeleteTextures(1, &texture);
 785 }
 786
 787 DELEGATE_TO_GL_R(createProgram, CreateProgram, WebGLId)
 788
 789 DELEGATE_TO_GL_1R(createShader, CreateShader, WGC3Denum, WebGLId)
 790
 791 DELEGATE_TO_GL_1(deleteProgram, DeleteProgram, WebGLId)
 792
 793 DELEGATE_TO_GL_1(deleteShader, DeleteShader, WebGLId)
 794
 795 void WebGraphicsContext3DImpl::setErrorMessageCallback(
 796     WebGraphicsContext3D::WebGraphicsErrorMessageCallback* cb) {
 797   error_message_callback_ = cb;
 798 }
 799
 800 void WebGraphicsContext3DImpl::setContextLostCallback(
 801     WebGraphicsContext3D::WebGraphicsContextLostCallback* cb) {
 802   context_lost_callback_ = cb;
 803 }
 804
 805 DELEGATE_TO_GL_5(texImageIOSurface2DCHROMIUM, TexImageIOSurface2DCHROMIUM,
 806                  WGC3Denum, WGC3Dint, WGC3Dint, WGC3Duint, WGC3Duint)
 807
 808 DELEGATE_TO_GL_5(texStorage2DEXT, TexStorage2DEXT,
 809                  WGC3Denum, WGC3Dint, WGC3Duint, WGC3Dint, WGC3Dint)
 810
 811 WebGLId WebGraphicsContext3DImpl::createQueryEXT() {
 812   GLuint o;
 813   gl_->GenQueriesEXT(1, &o);
 814   return o;
 815 }
 816
 817 void WebGraphicsContext3DImpl::deleteQueryEXT(
 818     WebGLId query) {
 819   gl_->DeleteQueriesEXT(1, &query);
 820 }
 821
 822 DELEGATE_TO_GL_1R(isQueryEXT, IsQueryEXT, WebGLId, WGC3Dboolean)
 823 DELEGATE_TO_GL_2(beginQueryEXT, BeginQueryEXT, WGC3Denum, WebGLId)
 824 DELEGATE_TO_GL_1(endQueryEXT, EndQueryEXT, WGC3Denum)
 825 DELEGATE_TO_GL_3(getQueryivEXT, GetQueryivEXT, WGC3Denum, WGC3Denum, WGC3Dint*)
 826 DELEGATE_TO_GL_3(getQueryObjectuivEXT, GetQueryObjectuivEXT,
 827                  WebGLId, WGC3Denum, WGC3Duint*)
 828
 829 DELEGATE_TO_GL_8(copyTextureCHROMIUM,
 830                  CopyTextureCHROMIUM,
 831                  WGC3Denum,
 832                  WebGLId,
 833                  WebGLId,
 834                  WGC3Denum,
 835                  WGC3Denum,
 836                  WGC3Dboolean,
 837                  WGC3Dboolean,
 838                  WGC3Dboolean);
 839
 840 DELEGATE_TO_GL_12(copySubTextureCHROMIUM,
 841                   CopySubTextureCHROMIUM,
 842                   WGC3Denum,
 843                   WebGLId,
 844                   WebGLId,
 845                   WGC3Dint,
 846                   WGC3Dint,
 847                   WGC3Dint,
 848                   WGC3Dint,
 849                   WGC3Dsizei,
 850                   WGC3Dsizei,
 851                   WGC3Dboolean,
 852                   WGC3Dboolean,
 853                   WGC3Dboolean);
 854
 855 DELEGATE_TO_GL_3(bindUniformLocationCHROMIUM, BindUniformLocationCHROMIUM,
 856                  WebGLId, WGC3Dint, const WGC3Dchar*)
 857
 858 void WebGraphicsContext3DImpl::shallowFlushCHROMIUM() {
 859   flush_id_ = GenFlushID();
 860   gl_->ShallowFlushCHROMIUM();
 861 }
 862
 863 void WebGraphicsContext3DImpl::shallowFinishCHROMIUM() {
 864   flush_id_ = GenFlushID();
 865   gl_->ShallowFinishCHROMIUM();
 866 }
 867
 868 DELEGATE_TO_GL_1(waitSyncPoint, WaitSyncPointCHROMIUM, GLuint)
 869
 870 void WebGraphicsContext3DImpl::loseContextCHROMIUM(
 871     WGC3Denum current, WGC3Denum other) {
 872   gl_->LoseContextCHROMIUM(current, other);
 873   gl_->Flush();
 874 }
 875
 876 DELEGATE_TO_GL_1(genMailboxCHROMIUM, GenMailboxCHROMIUM, WGC3Dbyte*)
 877 DELEGATE_TO_GL_2(produceTextureCHROMIUM, ProduceTextureCHROMIUM,
 878                  WGC3Denum, const WGC3Dbyte*)
 879 DELEGATE_TO_GL_3(produceTextureDirectCHROMIUM, ProduceTextureDirectCHROMIUM,
 880                  WebGLId, WGC3Denum, const WGC3Dbyte*)
 881 DELEGATE_TO_GL_2(consumeTextureCHROMIUM, ConsumeTextureCHROMIUM,
 882                  WGC3Denum, const WGC3Dbyte*)
 883 DELEGATE_TO_GL_2R(createAndConsumeTextureCHROMIUM,
 884                   CreateAndConsumeTextureCHROMIUM,
 885                   WGC3Denum, const WGC3Dbyte*, WebGLId)
 886
 887 DELEGATE_TO_GL_2(genValuebuffersCHROMIUM,
 888                  GenValuebuffersCHROMIUM,
 889                  WGC3Dsizei,
 890                  WebGLId*);
 891
 892 WebGLId WebGraphicsContext3DImpl::createValuebufferCHROMIUM() {
 893   GLuint o;
 894   gl_->GenValuebuffersCHROMIUM(1, &o);
 895   return o;
 896 }
 897
 898 DELEGATE_TO_GL_2(deleteValuebuffersCHROMIUM,
 899                  DeleteValuebuffersCHROMIUM,
 900                  WGC3Dsizei,
 901                  WebGLId*);
 902
 903 void WebGraphicsContext3DImpl::deleteValuebufferCHROMIUM(WebGLId valuebuffer) {
 904   gl_->DeleteValuebuffersCHROMIUM(1, &valuebuffer);
 905 }
 906
 907 DELEGATE_TO_GL_1RB(isValuebufferCHROMIUM,
 908                    IsValuebufferCHROMIUM,
 909                    WebGLId,
 910                    WGC3Dboolean)
 911 DELEGATE_TO_GL_2(bindValuebufferCHROMIUM,
 912                  BindValuebufferCHROMIUM,
 913                  WGC3Denum,
 914                  WebGLId)
 915 DELEGATE_TO_GL_2(subscribeValueCHROMIUM,
 916                  SubscribeValueCHROMIUM,
 917                  WGC3Denum,
 918                  WGC3Denum);
 919 DELEGATE_TO_GL_1(populateSubscribedValuesCHROMIUM,
 920                  PopulateSubscribedValuesCHROMIUM,
 921                  WGC3Denum);
 922 DELEGATE_TO_GL_3(uniformValuebufferCHROMIUM,
 923                  UniformValuebufferCHROMIUM,
 924                  WGC3Dint,
 925                  WGC3Denum,
 926                  WGC3Denum);
 927 DELEGATE_TO_GL_2(traceBeginCHROMIUM,
 928                  TraceBeginCHROMIUM,
 929                  const WGC3Dchar*,
 930                  const WGC3Dchar*);
 931 DELEGATE_TO_GL(traceEndCHROMIUM, TraceEndCHROMIUM);
 932
 933 void WebGraphicsContext3DImpl::insertEventMarkerEXT(
 934     const WGC3Dchar* marker) {
 935   gl_->InsertEventMarkerEXT(0, marker);
 936 }
 937
 938 void WebGraphicsContext3DImpl::pushGroupMarkerEXT(
 939     const WGC3Dchar* marker) {
 940   gl_->PushGroupMarkerEXT(0, marker);
 941 }
 942
 943 DELEGATE_TO_GL(popGroupMarkerEXT, PopGroupMarkerEXT);
 944
 945 WebGLId WebGraphicsContext3DImpl::createVertexArrayOES() {
 946   GLuint array;
 947   gl_->GenVertexArraysOES(1, &array);
 948   return array;
 949 }
 950
 951 void WebGraphicsContext3DImpl::deleteVertexArrayOES(
 952     WebGLId array) {
 953   gl_->DeleteVertexArraysOES(1, &array);
 954 }
 955
 956 DELEGATE_TO_GL_1R(isVertexArrayOES, IsVertexArrayOES, WebGLId, WGC3Dboolean)
 957 DELEGATE_TO_GL_1(bindVertexArrayOES, BindVertexArrayOES, WebGLId)
 958
 959 DELEGATE_TO_GL_2(bindTexImage2DCHROMIUM, BindTexImage2DCHROMIUM,
 960                  WGC3Denum, WGC3Dint)
 961 DELEGATE_TO_GL_2(releaseTexImage2DCHROMIUM, ReleaseTexImage2DCHROMIUM,
 962                  WGC3Denum, WGC3Dint)
 963
 964 DELEGATE_TO_GL_2R(mapBufferCHROMIUM, MapBufferCHROMIUM, WGC3Denum, WGC3Denum,
 965                   void*)
 966 DELEGATE_TO_GL_1R(unmapBufferCHROMIUM, UnmapBufferCHROMIUM, WGC3Denum,
 967                   WGC3Dboolean)
 968
 969 DELEGATE_TO_GL_2(drawBuffersEXT, DrawBuffersEXT, WGC3Dsizei, const WGC3Denum*)
 970
 971 DELEGATE_TO_GL_4(drawArraysInstancedANGLE, DrawArraysInstancedANGLE, WGC3Denum,
 972                  WGC3Dint, WGC3Dsizei, WGC3Dsizei)
 973
 974 void WebGraphicsContext3DImpl::drawElementsInstancedANGLE(
 975     WGC3Denum mode,
 976     WGC3Dsizei count,
 977     WGC3Denum type,
 978     WGC3Dintptr offset,
 979     WGC3Dsizei primcount) {
 980   gl_->DrawElementsInstancedANGLE(
 981       mode, count, type,
 982       reinterpret_cast<void*>(static_cast<intptr_t>(offset)), primcount);
 983 }
 984
 985 DELEGATE_TO_GL_2(vertexAttribDivisorANGLE, VertexAttribDivisorANGLE, WGC3Duint,
 986                  WGC3Duint)
 987
 988 DELEGATE_TO_GL_4R(createGpuMemoryBufferImageCHROMIUM,
 989                   CreateGpuMemoryBufferImageCHROMIUM,
 990                   WGC3Dsizei,
 991                   WGC3Dsizei,
 992                   WGC3Denum,
 993                   WGC3Denum,
 994                   WGC3Duint);
 995
 996 DELEGATE_TO_GL_1(destroyImageCHROMIUM, DestroyImageCHROMIUM, WGC3Duint);
 997
 998 DELEGATE_TO_GL_6(framebufferTexture2DMultisampleEXT,
 999                  FramebufferTexture2DMultisampleEXT,
1000                  WGC3Denum, WGC3Denum, WGC3Denum, WebGLId, WGC3Dint, WGC3Dsizei)
1001
1002 DELEGATE_TO_GL_5(renderbufferStorageMultisampleEXT,
1003                  RenderbufferStorageMultisampleEXT, WGC3Denum, WGC3Dsizei,
1004                  WGC3Denum, WGC3Dsizei, WGC3Dsizei)
1005
1006 DELEGATE_TO_GL_1(beginTransformFeedback, BeginTransformFeedback, WGC3Denum)
1007 DELEGATE_TO_GL_3(bindBufferBase, BindBufferBase, WGC3Denum, WGC3Duint,
1008                  WGC3Duint)
1009 DELEGATE_TO_GL_5(bindBufferRange, BindBufferRange, WGC3Denum, WGC3Duint,
1010                  WGC3Duint, WGC3Dintptr, WGC3Dsizeiptr)
1011 DELEGATE_TO_GL_2(bindSampler, BindSampler, WGC3Duint, WebGLId)
1012 DELEGATE_TO_GL_2(bindTransformFeedback, BindTransformFeedback, WGC3Denum,
1013                  WebGLId)
1014 DELEGATE_TO_GL_4(clearBufferfi, ClearBufferfi, WGC3Denum, WGC3Dint, WGC3Dfloat,
1015                  WGC3Dint)
1016 DELEGATE_TO_GL_3(clearBufferfv, ClearBufferfv, WGC3Denum, WGC3Dint,
1017                  const WGC3Dfloat *)
1018 DELEGATE_TO_GL_3(clearBufferiv, ClearBufferiv, WGC3Denum, WGC3Dint,
1019                  const WGC3Dint *)
1020 DELEGATE_TO_GL_3(clearBufferuiv, ClearBufferuiv, WGC3Denum, WGC3Dint,
1021                  const WGC3Duint *)
1022 WGC3Denum WebGraphicsContext3DImpl::clientWaitSync(WGC3Dsync sync,
1023                                                    WGC3Dbitfield flags,
1024                                                    WGC3Duint64 timeout) {
1025   return gl_->ClientWaitSync(reinterpret_cast<GLsync>(sync), flags, timeout);
1026 }
1027 DELEGATE_TO_GL_9(compressedTexImage3D, CompressedTexImage3D, WGC3Denum,
1028                  WGC3Dint, WGC3Denum, WGC3Dsizei, WGC3Dsizei, WGC3Dsizei,
1029                  WGC3Dint, WGC3Dsizei, const void *)
1030 DELEGATE_TO_GL_11(compressedTexSubImage3D, CompressedTexSubImage3D, WGC3Denum,
1031                   WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dsizei,
1032                   WGC3Dsizei, WGC3Dsizei, WGC3Denum, WGC3Dsizei, const void *)
1033 DELEGATE_TO_GL_5(copyBufferSubData, CopyBufferSubData, WGC3Denum, WGC3Denum,
1034                  WGC3Dintptr, WGC3Dintptr, WGC3Dsizeiptr)
1035 DELEGATE_TO_GL_9(copyTexSubImage3D, CopyTexSubImage3D, WGC3Denum, WGC3Dint,
1036                  WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dsizei,
1037                  WGC3Dsizei)
1038 WebGLId WebGraphicsContext3DImpl::createSampler() {
1039   GLuint sampler;
1040   gl_->GenSamplers(1, &sampler);
1041   return sampler;
1042 }
1043 WebGLId WebGraphicsContext3DImpl::createTransformFeedback() {
1044   GLuint tf;
1045   gl_->GenTransformFeedbacks(1, &tf);
1046   return tf;
1047 }
1048 void WebGraphicsContext3DImpl::deleteSampler(WebGLId sampler) {
1049   gl_->DeleteSamplers(1, &sampler);
1050 }
1051 void WebGraphicsContext3DImpl::deleteSync(WGC3Dsync sync) {
1052   gl_->DeleteSync(reinterpret_cast<GLsync>(sync));
1053 }
1054 void WebGraphicsContext3DImpl::deleteTransformFeedback(WebGLId tf) {
1055   gl_->DeleteTransformFeedbacks(1, &tf);
1056 }
1057 void WebGraphicsContext3DImpl::drawRangeElements(
1058     WGC3Denum mode, WGC3Duint start, WGC3Duint end, WGC3Dsizei count,
1059     WGC3Denum type, WGC3Dintptr offset) {
1060   gl_->DrawRangeElements(mode, start, end, count, type,
1061       reinterpret_cast<void*>(static_cast<intptr_t>(offset)));
1062 }
1063 DELEGATE_TO_GL(endTransformFeedback, EndTransformFeedback)
1064 WGC3Dsync WebGraphicsContext3DImpl::fenceSync(WGC3Denum condition,
1065                                               WGC3Dbitfield flags) {
1066   return reinterpret_cast<WGC3Dsync>(gl_->FenceSync(condition, flags));
1067 }
1068 DELEGATE_TO_GL_5(framebufferTextureLayer, FramebufferTextureLayer, WGC3Denum,
1069                  WGC3Denum, WGC3Duint, WGC3Dint, WGC3Dint)
1070 DELEGATE_TO_GL_5(getActiveUniformBlockName, GetActiveUniformBlockName,
1071                  WGC3Duint, WGC3Duint, WGC3Dsizei, WGC3Dsizei *, WGC3Dchar *)
1072 DELEGATE_TO_GL_4(getActiveUniformBlockiv, GetActiveUniformBlockiv, WGC3Duint,
1073                  WGC3Duint, WGC3Denum, WGC3Dint *)
1074 DELEGATE_TO_GL_5(getActiveUniformsiv, GetActiveUniformsiv, WGC3Duint,
1075                  WGC3Dsizei, const WGC3Duint *, WGC3Denum, WGC3Dint *)
1076 DELEGATE_TO_GL_2R(getFragDataLocation, GetFragDataLocation, WGC3Duint,
1077                   const WGC3Dchar *, WGC3Dint)
1078 DELEGATE_TO_GL_5(getInternalformativ, GetInternalformativ, WGC3Denum, WGC3Denum,
1079                  WGC3Denum, WGC3Dsizei, WGC3Dint *)
1080 DELEGATE_TO_GL_3(getSamplerParameterfv, GetSamplerParameterfv, WGC3Duint,
1081                  WGC3Denum, WGC3Dfloat *)
1082 DELEGATE_TO_GL_3(getSamplerParameteriv, GetSamplerParameteriv, WGC3Duint,
1083                  WGC3Denum, WGC3Dint *)
1084 DELEGATE_TO_GL_7(getTransformFeedbackVarying, GetTransformFeedbackVarying,
1085                  WGC3Duint, WGC3Duint, WGC3Dsizei, WGC3Dsizei *, WGC3Dsizei *,
1086                  WGC3Denum *, WGC3Dchar *)
1087 DELEGATE_TO_GL_2R(getUniformBlockIndex, GetUniformBlockIndex, WGC3Duint,
1088                   const WGC3Dchar *, WGC3Duint)
1089 DELEGATE_TO_GL_4(getUniformIndices, GetUniformIndices, WGC3Duint, WGC3Dsizei,
1090                  const WGC3Dchar *const*, WGC3Duint *)
1091 DELEGATE_TO_GL_3(getUniformuiv, GetUniformuiv, WGC3Duint, WGC3Dint,
1092                  WGC3Duint *)
1093 DELEGATE_TO_GL_3(getVertexAttribIiv, GetVertexAttribIiv, WGC3Duint,
1094                  WGC3Denum, WGC3Dint *)
1095 DELEGATE_TO_GL_3(getVertexAttribIuiv, GetVertexAttribIuiv, WGC3Duint,
1096                  WGC3Denum, WGC3Duint *)
1097 DELEGATE_TO_GL_3(invalidateFramebuffer, InvalidateFramebuffer, WGC3Denum,
1098                  WGC3Dsizei, const WGC3Denum *)
1099 DELEGATE_TO_GL_7(invalidateSubFramebuffer, InvalidateSubFramebuffer, WGC3Denum,
1100                  WGC3Dsizei, const WGC3Denum *, WGC3Dint, WGC3Dint, WGC3Dsizei,
1101                  WGC3Dsizei)
1102 DELEGATE_TO_GL_1R(isSampler, IsSampler, WebGLId, WGC3Dboolean)
1103 WGC3Dboolean WebGraphicsContext3DImpl::isSync(WGC3Dsync sync) {
1104   return gl_->IsSync(reinterpret_cast<GLsync>(sync));
1105 }
1106 DELEGATE_TO_GL_1R(isTransformFeedback, IsTransformFeedback, WGC3Duint,
1107                   WGC3Dboolean)
1108 DELEGATE_TO_GL_4R(mapBufferRange, MapBufferRange, WGC3Denum, WGC3Dintptr,
1109                   WGC3Dsizeiptr, WGC3Dbitfield, void*);
1110 DELEGATE_TO_GL(pauseTransformFeedback, PauseTransformFeedback)
1111 //DELEGATE_TO_GL_3(programParameteri, ProgramParameteri, WGC3Duint, WGC3Denum,
1112 //                 WGC3Dint)
1113 DELEGATE_TO_GL_1(readBuffer, ReadBuffer, WGC3Denum)
1114 DELEGATE_TO_GL(resumeTransformFeedback, ResumeTransformFeedback)
1115 DELEGATE_TO_GL_3(samplerParameterf, SamplerParameterf, WGC3Duint, WGC3Denum,
1116                  WGC3Dfloat)
1117 DELEGATE_TO_GL_3(samplerParameterfv, SamplerParameterfv, WGC3Duint, WGC3Denum,
1118                  const WGC3Dfloat *)
1119 DELEGATE_TO_GL_3(samplerParameteri, SamplerParameteri, WGC3Duint, WGC3Denum,
1120                  WGC3Dint)
1121 DELEGATE_TO_GL_3(samplerParameteriv, SamplerParameteriv, WGC3Duint, WGC3Denum,
1122                  const WGC3Dint *)
1123 DELEGATE_TO_GL_10(texImage3D, TexImage3D, WGC3Denum, WGC3Dint, WGC3Dint,
1124                   WGC3Dsizei, WGC3Dsizei, WGC3Dsizei, WGC3Dint, WGC3Denum,
1125                   WGC3Denum, const void *)
1126 DELEGATE_TO_GL_6(texStorage3D, TexStorage3D, WGC3Denum, WGC3Dsizei, WGC3Denum,
1127                  WGC3Dsizei, WGC3Dsizei, WGC3Dsizei)
1128 DELEGATE_TO_GL_11(texSubImage3D, TexSubImage3D, WGC3Denum, WGC3Dint, WGC3Dint,
1129                   WGC3Dint, WGC3Dint, WGC3Dsizei, WGC3Dsizei, WGC3Dsizei,
1130                   WGC3Denum, WGC3Denum, const void *)
1131 DELEGATE_TO_GL_4(transformFeedbackVaryings, TransformFeedbackVaryings,
1132                  WGC3Duint, WGC3Dsizei, const WGC3Dchar *const*, WGC3Denum)
1133 DELEGATE_TO_GL_2(uniform1ui, Uniform1ui, WGC3Dint, WGC3Duint)
1134 DELEGATE_TO_GL_3(uniform1uiv, Uniform1uiv, WGC3Dint, WGC3Dsizei,
1135                  const WGC3Duint *)
1136 DELEGATE_TO_GL_3(uniform2ui, Uniform2ui, WGC3Dint, WGC3Duint, WGC3Duint)
1137 DELEGATE_TO_GL_3(uniform2uiv, Uniform2uiv, WGC3Dint, WGC3Dsizei,
1138                  const WGC3Duint *)
1139 DELEGATE_TO_GL_4(uniform3ui, Uniform3ui, WGC3Dint, WGC3Duint, WGC3Duint,
1140                  WGC3Duint)
1141 DELEGATE_TO_GL_3(uniform3uiv, Uniform3uiv, WGC3Dint, WGC3Dsizei,
1142                  const WGC3Duint *)
1143 DELEGATE_TO_GL_5(uniform4ui, Uniform4ui, WGC3Dint, WGC3Duint, WGC3Duint,
1144                  WGC3Duint, WGC3Duint)
1145 DELEGATE_TO_GL_3(uniform4uiv, Uniform4uiv, WGC3Dint, WGC3Dsizei,
1146                  const WGC3Duint *)
1147 DELEGATE_TO_GL_3(uniformBlockBinding, UniformBlockBinding, WGC3Duint, WGC3Duint,
1148                  WGC3Duint)
1149 DELEGATE_TO_GL_4(uniformMatrix2x3fv, UniformMatrix2x3fv, WGC3Dint, WGC3Dsizei,
1150                  WGC3Dboolean, const WGC3Dfloat*)
1151 DELEGATE_TO_GL_4(uniformMatrix2x4fv, UniformMatrix2x4fv, WGC3Dint, WGC3Dsizei,
1152                  WGC3Dboolean, const WGC3Dfloat*)
1153 DELEGATE_TO_GL_4(uniformMatrix3x2fv, UniformMatrix3x2fv, WGC3Dint, WGC3Dsizei,
1154                  WGC3Dboolean, const WGC3Dfloat*)
1155 DELEGATE_TO_GL_4(uniformMatrix3x4fv, UniformMatrix3x4fv, WGC3Dint, WGC3Dsizei,
1156                  WGC3Dboolean, const WGC3Dfloat*)
1157 DELEGATE_TO_GL_4(uniformMatrix4x2fv, UniformMatrix4x2fv, WGC3Dint, WGC3Dsizei,
1158                  WGC3Dboolean, const WGC3Dfloat*)
1159 DELEGATE_TO_GL_4(uniformMatrix4x3fv, UniformMatrix4x3fv, WGC3Dint, WGC3Dsizei,
1160                  WGC3Dboolean, const WGC3Dfloat*)
1161 DELEGATE_TO_GL_1R(unmapBuffer, UnmapBuffer, WGC3Denum, WGC3Dboolean);
1162 DELEGATE_TO_GL_5(vertexAttribI4i, VertexAttribI4i, WGC3Duint, WGC3Dint,
1163                  WGC3Dint, WGC3Dint, WGC3Dint)
1164 DELEGATE_TO_GL_2(vertexAttribI4iv, VertexAttribI4iv, WGC3Duint,
1165                  const WGC3Dint *)
1166 DELEGATE_TO_GL_5(vertexAttribI4ui, VertexAttribI4ui, WGC3Duint, WGC3Duint,
1167                  WGC3Duint, WGC3Duint, WGC3Duint)
1168 DELEGATE_TO_GL_2(vertexAttribI4uiv, VertexAttribI4uiv, WGC3Duint,
1169                  const WGC3Duint *)
1170 void WebGraphicsContext3DImpl::vertexAttribIPointer(
1171     WGC3Duint index, WGC3Dint size, WGC3Denum type, WGC3Dsizei stride,
1172     WGC3Dintptr offset) {
1173   gl_->VertexAttribIPointer(
1174       index, size, type, stride,
1175       reinterpret_cast<void*>(static_cast<intptr_t>(offset)));
1176 }
1177 void WebGraphicsContext3DImpl::waitSync(WGC3Dsync sync,
1178                                         WGC3Dbitfield flags,
1179                                         WGC3Duint64 timeout) {
1180   gl_->WaitSync(reinterpret_cast<GLsync>(sync), flags, timeout);
1181 }
1182
1183 bool WebGraphicsContext3DImpl::isContextLost() {
1184   return getGraphicsResetStatusARB() != GL_NO_ERROR;
1185 }
1186
1187 blink::WGC3Denum WebGraphicsContext3DImpl::getGraphicsResetStatusARB() {
1188   return gl_->GetGraphicsResetStatusKHR();
1189 }
1190
1191 GrGLInterface* WebGraphicsContext3DImpl::createGrGLInterface() {
1192   return skia_bindings::CreateCommandBufferSkiaGLBinding();
1193 }
1194
1195 ::gpu::gles2::GLES2ImplementationErrorMessageCallback*
1196     WebGraphicsContext3DImpl::getErrorMessageCallback() {
1197   if (!client_error_message_callback_) {
1198     client_error_message_callback_.reset(
1199         new WebGraphicsContext3DErrorMessageCallback(this));
1200   }
1201   return client_error_message_callback_.get();
1202 }
1203
1204 void WebGraphicsContext3DImpl::OnErrorMessage(
1205     const std::string& message, int id) {
1206   if (error_message_callback_) {
1207     blink::WebString str = blink::WebString::fromUTF8(message.c_str());
1208     error_message_callback_->onErrorMessage(str, id);
1209   }
1210 }
1211
1212 // TODO(bajones): Look into removing these functions from the blink interface
1213 void WebGraphicsContext3DImpl::prepareTexture() {
1214   NOTREACHED();
1215 }
1216
1217 void WebGraphicsContext3DImpl::postSubBufferCHROMIUM(
1218     int x, int y, int width, int height) {
1219   NOTREACHED();
1220 }
1221
1222 void WebGraphicsContext3DImpl::setVisibilityCHROMIUM(
1223     bool visible) {
1224   NOTREACHED();
1225 }
1226
1227 void WebGraphicsContext3DImpl::copyTextureToParentTextureCHROMIUM(
1228     WebGLId texture, WebGLId parentTexture) {
1229   NOTIMPLEMENTED();
1230 }
1231
1232 void WebGraphicsContext3DImpl::releaseShaderCompiler() {
1233 }
1234
1235 // static
1236 void WebGraphicsContext3DImpl::ConvertAttributes(
1237     const blink::WebGraphicsContext3D::Attributes& attributes,
1238     ::gpu::gles2::ContextCreationAttribHelper* output_attribs) {
1239   output_attribs->alpha_size = attributes.alpha ? 8 : 0;
1240   output_attribs->depth_size = attributes.depth ? 24 : 0;
1241   output_attribs->stencil_size = attributes.stencil ? 8 : 0;
1242   output_attribs->samples = attributes.antialias ? 4 : 0;
1243   output_attribs->sample_buffers = attributes.antialias ? 1 : 0;
1244   output_attribs->fail_if_major_perf_caveat =
1245       attributes.failIfMajorPerformanceCaveat;
1246   output_attribs->bind_generates_resource = false;
1247   output_attribs->webgl_version = attributes.webGLVersion;
1248 }
1249
1250 }  // namespace gpu_blink