Making use of bindless variants mailbox produce/consume.

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 437 matching lines @@
         }
         m_context->flush();
     }
 
     if (!Extensions3DUtil::canUseCopyTextureCHROMIUM(internalFormat, destType, level))
         return false;
 
     // Contexts may be in a different share group. We must transfer the texture through a mailbox first
     RefPtr<MailboxInfo> bufferMailbox = adoptRef(new MailboxInfo());
     m_context->genMailboxCHROMIUM(bufferMailbox->mailbox.name);
-    m_context->bindTexture(GL_TEXTURE_2D, textureId);
-    m_context->produceTextureCHROMIUM(GL_TEXTURE_2D, bufferMailbox->mailbox.name);
+    m_context->produceTextureDirectCHROMIUM(textureId, GL_TEXTURE_2D, bufferMailbox->mailbox.name);
     m_context->flush();
 
     bufferMailbox->mailbox.syncPoint = m_context->insertSyncPoint();
 
     if (!context->makeContextCurrent())
         return false;
 
-    Platform3DObject sourceTexture = context->createTexture();
-
-    // TODO(bajones): Should be able to change the texture bindings here without reverting but
-    // something else in the system is depending on it. Failing to revert causes WebGL
-    // tests to fail. We should find out why and fix it.
-    GLint boundTexture = 0;
-    context->getIntegerv(GL_TEXTURE_BINDING_2D, &boundTexture);
-    context->bindTexture(GL_TEXTURE_2D, sourceTexture);
     context->waitSyncPoint(bufferMailbox->mailbox.syncPoint);
-    context->consumeTextureCHROMIUM(GL_TEXTURE_2D, bufferMailbox->mailbox.name);
+    Platform3DObject sourceTexture = context->createAndConsumeTextureCHROMIUM(GL_TEXTURE_2D, bufferMailbox->mailbox.name);
 
     bool unpackPremultiplyAlphaNeeded = false;
     bool unpackUnpremultiplyAlphaNeeded = false;
     if (m_actualAttributes.alpha && m_actualAttributes.premultipliedAlpha && !premultiplyAlpha)
         unpackUnpremultiplyAlphaNeeded = true;
     else if (m_actualAttributes.alpha && !m_actualAttributes.premultipliedAlpha && premultiplyAlpha)
         unpackPremultiplyAlphaNeeded = true;
 
     context->pixelStorei(GC3D_UNPACK_UNPREMULTIPLY_ALPHA_CHROMIUM, unpackUnpremultiplyAlphaNeeded);
     context->pixelStorei(GC3D_UNPACK_PREMULTIPLY_ALPHA_CHROMIUM, unpackPremultiplyAlphaNeeded);
     context->pixelStorei(GC3D_UNPACK_FLIP_Y_CHROMIUM, flipY);
     context->copyTextureCHROMIUM(GL_TEXTURE_2D, sourceTexture, texture, level, internalFormat, destType);
     context->pixelStorei(GC3D_UNPACK_FLIP_Y_CHROMIUM, false);
     context->pixelStorei(GC3D_UNPACK_UNPREMULTIPLY_ALPHA_CHROMIUM, false);
     context->pixelStorei(GC3D_UNPACK_PREMULTIPLY_ALPHA_CHROMIUM, false);
 
-    context->bindTexture(GL_TEXTURE_2D, boundTexture);
     context->deleteTexture(sourceTexture);
 
     context->flush();
     m_context->waitSyncPoint(context->insertSyncPoint());
 
     return true;
 }
 
 Platform3DObject DrawingBuffer::framebuffer() const
 {
@@ skipping 569 matching lines @@
 void DrawingBuffer::deleteChromiumImageForTexture(TextureInfo* info)
 {
     if (info->imageId) {
         m_context->releaseTexImage2DCHROMIUM(GL_TEXTURE_2D, info->imageId);
         m_context->destroyImageCHROMIUM(info->imageId);
         info->imageId = 0;
     }
 }
 
 } // namespace WebCore