cc/output/texture_copier_unittest.cc

   1 // Copyright 2011 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/output/texture_copier.h"
   6
   7 #include "cc/test/test_web_graphics_context_3d.h"
   8 #include "testing/gmock/include/gmock/gmock.h"
   9 #include "testing/gtest/include/gtest/gtest.h"
  10 #include "third_party/khronos/GLES2/gl2.h"
  11
  12 using testing::InSequence;
  13 using testing::Test;
  14 using testing::_;
  15 using WebKit::WebGLId;
  16 using WebKit::WGC3Denum;
  17 using WebKit::WGC3Dint;
  18 using WebKit::WGC3Dsizei;
  19
  20 namespace cc {
  21 namespace {
  22
  23 class MockContext : public TestWebGraphicsContext3D {
  24  public:
  25   MOCK_METHOD2(bindFramebuffer, void(WGC3Denum, WebGLId));
  26   MOCK_METHOD3(texParameteri,
  27                void(WGC3Denum target, WGC3Denum pname, WGC3Dint param));
  28   MOCK_METHOD1(disable, void(WGC3Denum cap));
  29   MOCK_METHOD1(enable, void(WGC3Denum cap));
  30
  31   MOCK_METHOD3(drawArrays,
  32                void(WGC3Denum mode, WGC3Dint first, WGC3Dsizei count));
  33 };
  34
  35 TEST(TextureCopierTest, TestDrawArraysCopy) {
  36   scoped_ptr<MockContext> mock_context(new MockContext);
  37   {
  38     InSequence sequence;
  39
  40     EXPECT_CALL(*mock_context, disable(GL_SCISSOR_TEST));
  41
  42     // Here we check just some essential properties of copyTexture() to avoid
  43     // mirroring the full implementation.
  44     EXPECT_CALL(*mock_context, bindFramebuffer(GL_FRAMEBUFFER, _));
  45
  46     // Make sure linear filtering is disabled during the copy.
  47     EXPECT_CALL(
  48         *mock_context,
  49         texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST));
  50     EXPECT_CALL(
  51         *mock_context,
  52         texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST));
  53
  54     EXPECT_CALL(*mock_context, disable(GL_BLEND));
  55
  56     EXPECT_CALL(*mock_context, drawArrays(_, _, _));
  57
  58     // Linear filtering, default framebuffer and scissor test should be
  59     // restored.
  60     EXPECT_CALL(*mock_context,
  61                 texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
  62     EXPECT_CALL(*mock_context,
  63                 texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
  64     EXPECT_CALL(*mock_context, bindFramebuffer(GL_FRAMEBUFFER, 0));
  65     EXPECT_CALL(*mock_context, enable(GL_SCISSOR_TEST));
  66   }
  67
  68   int source_texture_id = mock_context->createTexture();
  69   int dest_texture_id = mock_context->createTexture();
  70   gfx::Size size(256, 128);
  71   scoped_ptr<AcceleratedTextureCopier> copier(
  72       AcceleratedTextureCopier::Create(mock_context.get(), false, 0));
  73   TextureCopier::Parameters copy = { source_texture_id, dest_texture_id, size };
  74   copier->CopyTexture(copy);
  75 }
  76
  77 }  // namespace
  78 }  // namespace cc