WebGL GL_RGB emulation to support IOSurfaces on Mac.

third_party/WebKit/Source/modules/webgl/WebGLTexture.cpp

 /*
  * Copyright (C) 2009 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 19 matching lines @@
 
 namespace blink {
 
 WebGLTexture* WebGLTexture::create(WebGLRenderingContextBase* ctx)
 {
     return new WebGLTexture(ctx);
 }
 
 WebGLTexture::WebGLTexture(WebGLRenderingContextBase* ctx)
     : WebGLSharedPlatform3DObject(ctx)
+    , m_colorFormat(0)
     , m_target(0)
 {
     GLuint texture;
     ctx->contextGL()->GenTextures(1, &texture);
     setObject(texture);
 }
 
 WebGLTexture::~WebGLTexture()
 {
     // See the comment in WebGLObject::detachAndDeleteObject().
     detachAndDeleteObject();
 }
 
 void WebGLTexture::setTarget(GLenum target)
 {
     if (!object())
         return;
     // Target is finalized the first time bindTexture() is called.
     if (m_target)
         return;
     m_target = target;
 }
 
+void WebGLTexture::setColorFormat(GLenum format)
+{
+    if (!object())
+        return;
+    m_colorFormat = format;
+}
+
 void WebGLTexture::deleteObjectImpl(gpu::gles2::GLES2Interface* gl)
 {
     gl->DeleteTextures(1, &m_object);
     m_object = 0;
 }
 
 int WebGLTexture::mapTargetToIndex(GLenum target) const
 {
     if (m_target == GL_TEXTURE_2D) {
         if (target == GL_TEXTURE_2D)
@@ skipping 37 matching lines @@
         if (x) {
             value = x;
             log += shift;
         }
     }
     ASSERT(value == 1);
     return log + 1;
 }
 
 } // namespace blink