Remove the command buffer method glGetImageivCHROMIUM.

third_party/WebKit/Source/platform/graphics/gpu/DrawingBuffer.cpp

 /*
  * Copyright (c) 2010, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 290 matching lines @@
     m_gl->ProduceTextureDirectCHROMIUM(frontColorBufferMailbox->textureInfo.textureId, frontColorBufferMailbox->textureInfo.parameters.target, frontColorBufferMailbox->mailbox.name);
     const GLuint64 fenceSync = m_gl->InsertFenceSyncCHROMIUM();
     if (RuntimeEnabledFeatures::webGLImageChromiumEnabled())
         m_gl->DescheduleUntilFinishedCHROMIUM();
     m_gl->Flush();
     m_gl->GenSyncTokenCHROMIUM(fenceSync, frontColorBufferMailbox->mailbox.syncToken);
     frontColorBufferMailbox->mailbox.validSyncToken = true;
     frontColorBufferMailbox->mailbox.allowOverlay = frontColorBufferMailbox->textureInfo.imageId != 0;
     frontColorBufferMailbox->mailbox.textureTarget = frontColorBufferMailbox->textureInfo.parameters.target;
     frontColorBufferMailbox->mailbox.textureSize = WebSize(m_size.width(), m_size.height());
-    frontColorBufferMailbox->mailbox.gpuMemoryBufferId = frontColorBufferMailbox->textureInfo.gpuMemoryBufferId;
     setBufferClearNeeded(true);
 
     // set m_parentDrawingBuffer to make sure 'this' stays alive as long as it has live mailboxes
     ASSERT(!frontColorBufferMailbox->m_parentDrawingBuffer);
     frontColorBufferMailbox->m_parentDrawingBuffer = this;
     *outMailbox = frontColorBufferMailbox->mailbox;
     m_frontColorBuffer = { frontColorBufferMailbox->textureInfo, frontColorBufferMailbox->mailbox };
     return true;
 }
 
@@ skipping 645 matching lines @@
     m_gl->TexImage2D(target, 0, internalformat, width, height, border, format, type, 0);
 }
 
 void DrawingBuffer::deleteChromiumImageForTexture(TextureInfo* info)
 {
     if (info->imageId) {
         m_gl->BindTexture(info->parameters.target, info->textureId);
         m_gl->ReleaseTexImage2DCHROMIUM(info->parameters.target, info->imageId);
         m_gl->DestroyImageCHROMIUM(info->imageId);
         info->imageId = 0;
-        info->gpuMemoryBufferId = -1;
     }
 }
 
 void DrawingBuffer::clearChromiumImageAlpha(const TextureInfo& info)
 {
     if (m_wantAlphaChannel)
         return;
     if (!contextProvider()->getCapabilities().chromium_image_rgb_emulation)
         return;
 
@@ skipping 11 matching lines @@
     m_gl->ColorMask(m_colorMask[0], m_colorMask[1], m_colorMask[2], m_colorMask[3]);
 }
 
 DrawingBuffer::TextureInfo DrawingBuffer::createTextureAndAllocateMemory(const IntSize& size)
 {
     if (!RuntimeEnabledFeatures::webGLImageChromiumEnabled())
         return createDefaultTextureAndAllocateMemory(size);
 
     TextureParameters parameters = chromiumImageTextureParameters();
     GLuint imageId = m_gl->CreateGpuMemoryBufferImageCHROMIUM(size.width(), size.height(), parameters.creationInternalColorFormat, GC3D_SCANOUT_CHROMIUM);
-    GLint gpuMemoryBufferId = -1;
     GLuint textureId = createColorTexture(parameters);
-
     if (imageId) {
         m_gl->BindTexImage2DCHROMIUM(parameters.target, imageId);
-        m_gl->GetImageivCHROMIUM(imageId, GC3D_GPU_MEMORY_BUFFER_ID, &gpuMemoryBufferId);
-        DCHECK_NE(-1, gpuMemoryBufferId);
     }
 
     TextureInfo info;
     info.textureId = textureId;
     info.imageId = imageId;
-    info.gpuMemoryBufferId = gpuMemoryBufferId;
     info.parameters = parameters;
     clearChromiumImageAlpha(info);
     return info;
 }
 
 DrawingBuffer::TextureInfo DrawingBuffer::createDefaultTextureAndAllocateMemory(const IntSize& size)
 {
     DrawingBuffer::TextureInfo info;
     TextureParameters parameters = defaultTextureParameters();
     info.parameters = parameters;
@@ skipping 19 matching lines @@
         info->immutable = m_storageTextureSupported;
         return;
     }
 
     DCHECK(!info->immutable);
     deleteChromiumImageForTexture(info);
     info->imageId = m_gl->CreateGpuMemoryBufferImageCHROMIUM(size.width(), size.height(), info->parameters.creationInternalColorFormat, GC3D_SCANOUT_CHROMIUM);
     if (info->imageId) {
         m_gl->BindTexture(info->parameters.target, info->textureId);
         m_gl->BindTexImage2DCHROMIUM(info->parameters.target, info->imageId);
-
-        GLint gpuMemoryBufferId = -1;
-        m_gl->GetImageivCHROMIUM(info->imageId, GC3D_GPU_MEMORY_BUFFER_ID, &gpuMemoryBufferId);
-        DCHECK_NE(-1, gpuMemoryBufferId);
-        info->gpuMemoryBufferId = gpuMemoryBufferId;
-
         clearChromiumImageAlpha(*info);
     } else {
-        info->gpuMemoryBufferId = -1;
-
         // At this point, the texture still exists, but has no allocated
         // storage. This is intentional, and mimics the behavior of a texImage2D
         // failure.
     }
 }
 
 void DrawingBuffer::attachColorBufferToReadFramebuffer()
 {
     m_gl->BindFramebuffer(GL_FRAMEBUFFER, m_fbo);
 
@@ skipping 35 matching lines @@
 
 void DrawingBuffer::restoreTextureBindings()
 {
     // This class potentially modifies the bindings for GL_TEXTURE_2D and
     // GL_TEXTURE_RECTANGLE. Only GL_TEXTURE_2D needs to be restored since
     // the public interface for WebGL does not support GL_TEXTURE_RECTANGLE.
     m_gl->BindTexture(GL_TEXTURE_2D, m_texture2DBinding);
 }
 
 } // namespace blink