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

gpu/command_buffer/service/texture_manager.cc

 // 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.
 
 #include "gpu/command_buffer/service/texture_manager.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 198 matching lines @@
          GL_FLOAT_32_UNSIGNED_INT_24_8_REV},
 
         // Exposed by GL_APPLE_texture_format_BGRA8888 for TexStorage*
         // TODO(kainino): this actually exposes it for (Copy)TexImage* as well,
         // which is incorrect. crbug.com/663086
         {GL_BGRA8_EXT, GL_BGRA_EXT, GL_UNSIGNED_BYTE},
 
         // Exposed by GL_APPLE_texture_format_BGRA8888 and
         // GL_EXT_texture_format_BGRA8888
         {GL_BGRA_EXT, GL_BGRA_EXT, GL_UNSIGNED_BYTE},
+
+        // Exposed by GL_EXT_texture_norm16
+        {GL_R16_EXT, GL_RED, GL_UNSIGNED_SHORT},
     };
 
     static const FormatType kSupportedFormatTypesES2Only[] = {
         // Exposed by GL_OES_texture_float and GL_OES_texture_half_float
         {GL_RGB, GL_RGB, GL_FLOAT},
         {GL_RGBA, GL_RGBA, GL_FLOAT},
         {GL_LUMINANCE_ALPHA, GL_LUMINANCE_ALPHA, GL_FLOAT},
         {GL_LUMINANCE, GL_LUMINANCE, GL_FLOAT},
         {GL_ALPHA, GL_ALPHA, GL_FLOAT},
         {GL_RGB, GL_RGB, GL_HALF_FLOAT_OES},
@@ skipping 3455 matching lines @@
 uint32_t TextureManager::GetServiceIdGeneration() const {
   return current_service_id_generation_;
 }
 
 void TextureManager::IncrementServiceIdGeneration() {
   current_service_id_generation_++;
 }
 
 }  // namespace gles2
 }  // namespace gpu