cc/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/texture_copier.h"
   6
   7 #include "cc/test/fake_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 namespace WebKit;
  13 using testing::InSequence;
  14 using testing::Test;
  15 using testing::_;
  16
  17 namespace cc {
  18 namespace {
  19
  20 class MockContext : public FakeWebGraphicsContext3D {
  21 public:
  22     MOCK_METHOD2(bindFramebuffer, void(WGC3Denum, WebGLId));
  23     MOCK_METHOD3(texParameteri, void(WGC3Denum target, WGC3Denum pname, WGC3Dint param));
  24     MOCK_METHOD1(disable, void(WGC3Denum cap));
  25     MOCK_METHOD1(enable, void(WGC3Denum cap));
  26
  27     MOCK_METHOD3(drawArrays, void(WGC3Denum mode, WGC3Dint first, WGC3Dsizei count));
  28 };
  29
  30 TEST(TextureCopierTest, testDrawArraysCopy)
  31 {
  32     scoped_ptr<MockContext> mockContext(new MockContext);
  33
  34     {
  35         InSequence sequence;
  36
  37         EXPECT_CALL(*mockContext, disable(GL_SCISSOR_TEST));
  38
  39         // Here we check just some essential properties of copyTexture() to avoid mirroring the full implementation.
  40         EXPECT_CALL(*mockContext, bindFramebuffer(GL_FRAMEBUFFER, _));
  41
  42         // Make sure linear filtering is disabled during the copy.
  43         EXPECT_CALL(*mockContext, texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST));
  44         EXPECT_CALL(*mockContext, texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST));
  45
  46         EXPECT_CALL(*mockContext, disable(GL_BLEND));
  47
  48         EXPECT_CALL(*mockContext, drawArrays(_, _, _));
  49
  50         // Linear filtering, default framebuffer and scissor test should be restored.
  51         EXPECT_CALL(*mockContext, texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
  52         EXPECT_CALL(*mockContext, texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
  53         EXPECT_CALL(*mockContext, bindFramebuffer(GL_FRAMEBUFFER, 0));
  54         EXPECT_CALL(*mockContext, enable(GL_SCISSOR_TEST));
  55     }
  56
  57     int sourceTextureId = mockContext->createTexture();
  58     int destTextureId = mockContext->createTexture();
  59     gfx::Size size(256, 128);
  60     scoped_ptr<AcceleratedTextureCopier> copier(AcceleratedTextureCopier::create(mockContext.get(), false));
  61     TextureCopier::Parameters copy = { sourceTextureId, destTextureId, size };
  62     copier->copyTexture(copy);
  63 }
  64
  65 }  // namespace
  66 }  // namespace cc