cc/resources/scoped_gpu_raster_unittest.cc

   1 // Copyright 2014 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/resources/scoped_gpu_raster.h"
   6 #include "cc/test/test_context_provider.h"
   7 #include "testing/gtest/include/gtest/gtest.h"
   8
   9 namespace cc {
  10 namespace {
  11
  12 class ScopedGpuRasterTest : public testing::Test {
  13  public:
  14   ScopedGpuRasterTest() {}
  15 };
  16
  17 // Releasing ScopedGpuRaster should restore GL_UNPACK_ALIGNMENT == 4.
  18 TEST(ScopedGpuRasterTest, RestoresUnpackAlignment) {
  19   scoped_refptr<TestContextProvider> provider = TestContextProvider::Create();
  20   EXPECT_TRUE(provider->BindToCurrentThread());
  21   gpu::gles2::GLES2Interface* gl = provider->ContextGL();
  22   GLint unpack_alignment = 0;
  23   gl->GetIntegerv(GL_UNPACK_ALIGNMENT, &unpack_alignment);
  24   EXPECT_EQ(4, unpack_alignment);
  25
  26   {
  27     scoped_ptr<ScopedGpuRaster> scoped_gpu_raster(
  28         new ScopedGpuRaster(provider.get()));
  29     gl->PixelStorei(GL_UNPACK_ALIGNMENT, 1);
  30     gl->GetIntegerv(GL_UNPACK_ALIGNMENT, &unpack_alignment);
  31     EXPECT_EQ(1, unpack_alignment);
  32   }
  33
  34   gl->GetIntegerv(GL_UNPACK_ALIGNMENT, &unpack_alignment);
  35   EXPECT_EQ(4, unpack_alignment);
  36 }
  37
  38 }  // namespace
  39 }  // namespace cc