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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "cc/test/test_texture.h"
      6 
      7 #include "gpu/GLES2/gl2extchromium.h"
      8 #include "third_party/khronos/GLES2/gl2ext.h"
      9 
     10 namespace cc {
     11 
     12 size_t TextureSizeBytes(const gfx::Size& size, ResourceFormat format) {
     13   unsigned int components_per_pixel = 4;
     14   unsigned int bytes_per_component = 1;
     15   return size.width() * size.height() * components_per_pixel *
     16          bytes_per_component;
     17 }
     18 
     19 TestTexture::TestTexture() : format(RGBA_8888) {
     20   // Initialize default parameter values.
     21   params[GL_TEXTURE_MAG_FILTER] = GL_LINEAR;
     22   params[GL_TEXTURE_MIN_FILTER] = GL_NEAREST_MIPMAP_LINEAR;
     23   params[GL_TEXTURE_WRAP_S] = GL_REPEAT;
     24   params[GL_TEXTURE_WRAP_T] = GL_REPEAT;
     25   params[GL_TEXTURE_POOL_CHROMIUM] = GL_TEXTURE_POOL_UNMANAGED_CHROMIUM;
     26   params[GL_TEXTURE_USAGE_ANGLE] = GL_NONE;
     27 }
     28 
     29 TestTexture::~TestTexture() {}
     30 
     31 void TestTexture::Reallocate(const gfx::Size& size, ResourceFormat format) {
     32   this->size = size;
     33   this->format = format;
     34   this->data.reset(new uint8_t[TextureSizeBytes(size, format)]);
     35 }
     36 
     37 bool TestTexture::IsValidParameter(GLenum pname) {
     38   return params.find(pname) != params.end();
     39 }
     40 
     41 }  // namespace cc
     42