Allow creating GLImage-backed textures with glTexStorage2D.

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 1347 matching lines @@
       if (param < 1) {
         return GL_INVALID_VALUE;
       }
       break;
     case GL_TEXTURE_USAGE_ANGLE:
       if (!feature_info->validators()->texture_usage.IsValid(param)) {
         return GL_INVALID_ENUM;
       }
       usage_ = param;
       break;
+    case GL_TEXTURE_BUFFER_USAGE_CHROMIUM:
+      if (!feature_info->validators()->texture_buffer_usage.IsValid(param)) {
+        return GL_INVALID_ENUM;
+      }
+      buffer_usage_ = param;
+      break;
     case GL_TEXTURE_SWIZZLE_R:
       if (!feature_info->validators()->texture_swizzle.IsValid(param)) {
         return GL_INVALID_ENUM;
       }
       swizzle_r_ = param;
       break;
     case GL_TEXTURE_SWIZZLE_G:
       if (!feature_info->validators()->texture_swizzle.IsValid(param)) {
         return GL_INVALID_ENUM;
       }
@@ skipping 814 matching lines @@
     }
   } else {
     switch (pname) {
       case GL_TEXTURE_SWIZZLE_R:
       case GL_TEXTURE_SWIZZLE_G:
       case GL_TEXTURE_SWIZZLE_B:
       case GL_TEXTURE_SWIZZLE_A:
         glTexParameteri(texture->target(), pname,
                         texture->GetCompatibilitySwizzleForChannel(param));
         break;
+      case GL_TEXTURE_BUFFER_USAGE_CHROMIUM:
+        break;
       default:
         glTexParameteri(texture->target(), pname, param);
         break;
     }
   }
 }
 
 void TextureManager::SetParameterf(
     const char* function_name, ErrorState* error_state,
     TextureRef* ref, GLenum pname, GLfloat param) {
@@ skipping 1549 matching lines @@
 uint32_t TextureManager::GetServiceIdGeneration() const {
   return current_service_id_generation_;
 }
 
 void TextureManager::IncrementServiceIdGeneration() {
   current_service_id_generation_++;
 }
 
 }  // namespace gles2
 }  // namespace gpu