16-bit video upload to float: intermediate R16_EXT and copy to float.

third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.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 5318 matching lines @@
     }
   }
 
   if (sourceImageRectIsDefault) {
     // Try using optimized CPU-GPU path for some formats: e.g. Y16 and Y8. It
     // leaves early for other formats or if frame is stored on GPU.
     ScopedUnpackParametersResetRestore(
         this, m_unpackFlipY || m_unpackPremultiplyAlpha);
     if (video->texImageImpl(
             static_cast<WebMediaPlayer::TexImageFunctionID>(functionID), target,
-            contextGL(), level, convertTexInternalFormat(internalformat, type),
-            format, type, xoffset, yoffset, zoffset, m_unpackFlipY,
+            contextGL(), texture->object(), level,
+            convertTexInternalFormat(internalformat, type), format, type,
+            xoffset, yoffset, zoffset, m_unpackFlipY,
             m_unpackPremultiplyAlpha &&
                 m_unpackColorspaceConversion == GL_NONE)) {
       texture->updateLastUploadedVideo(video->webMediaPlayer());
       return;
     }
   }
 
   RefPtr<Image> image = videoFrameToImage(video);
   if (!image)
     return;
@@ skipping 2499 matching lines @@
 
 void WebGLRenderingContextBase::getHTMLOrOffscreenCanvas(
     HTMLCanvasElementOrOffscreenCanvas& result) const {
   if (canvas())
     result.setHTMLCanvasElement(canvas());
   else
     result.setOffscreenCanvas(offscreenCanvas());
 }
 
 }  // namespace blink