Implement client side PBOs for glReadPixel

gpu/command_buffer/client/gles2_implementation.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_H_
 #define GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_H_
 
 #include <GLES2/gl2.h>
 
 #include <map>
@@ skipping 62 matching lines @@
 #if defined(__native_client__) || defined(GLES2_CONFORMANCE_TESTS)
   #define GPU_CLIENT_VALIDATE_DESTINATION_INITALIZATION_ASSERT(v)
   #define GPU_CLIENT_DCHECK(v)
 #elif defined(GPU_DCHECK)
   #define GPU_CLIENT_VALIDATE_DESTINATION_INITALIZATION_ASSERT(v) GPU_DCHECK(v)
   #define GPU_CLIENT_DCHECK(v) GPU_DCHECK(v)
 #elif defined(DCHECK)
   #define GPU_CLIENT_VALIDATE_DESTINATION_INITALIZATION_ASSERT(v) DCHECK(v)
   #define GPU_CLIENT_DCHECK(v) DCHECK(v)
 #else
-  #define GPU_CLIENT_VALIDATE_DESTINATION_INITALIZATION_ASSERT(v) ASSERT(v)
+xo  #define GPU_CLIENT_VALIDATE_DESTINATION_INITALIZATION_ASSERT(v) ASSERT(v)

[apatrick_chromium, 2013/03/19 18:34:48]

Don't think this is intended for this CL.

[hubbe, 2013/03/19 22:42:42]

Done.

   #define GPU_CLIENT_DCHECK(v) ASSERT(v)
 #endif
 
 #define GPU_CLIENT_VALIDATE_DESTINATION_INITALIZATION(type, ptr) \
     GPU_CLIENT_VALIDATE_DESTINATION_INITALIZATION_ASSERT(ptr && \
         (ptr[0] == static_cast<type>(0) || ptr[0] == static_cast<type>(-1)));
 
 #define GPU_CLIENT_VALIDATE_DESTINATION_OPTIONAL_INITALIZATION(type, ptr) \
     GPU_CLIENT_VALIDATE_DESTINATION_INITALIZATION_ASSERT(!ptr || \
         (ptr[0] == static_cast<type>(0) || ptr[0] == static_cast<type>(-1)));
@@ skipping 532 matching lines @@
 
 inline bool GLES2Implementation::GetTexParameterivHelper(
     GLenum /* target */, GLenum /* pname */, GLint* /* params */) {
   return false;
 }
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_H_