cc/layers/texture_layer_impl_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/layers/texture_layer_impl.h"
   6
   7 #include "cc/output/context_provider.h"
   8 #include "cc/output/output_surface.h"
   9 #include "cc/test/layer_test_common.h"
  10 #include "testing/gtest/include/gtest/gtest.h"
  11
  12 namespace cc {
  13 namespace {
  14
  15 void IgnoreCallback(uint32 sync_point,
  16                     bool lost,
  17                     BlockingTaskRunner* main_thread_task_runner) {
  18 }
  19
  20 TEST(TextureLayerImplTest, Occlusion) {
  21   gfx::Size layer_size(1000, 1000);
  22   gfx::Size viewport_size(1000, 1000);
  23
  24   LayerTestCommon::LayerImplTest impl;
  25
  26   gpu::Mailbox mailbox;
  27   impl.output_surface()->context_provider()->ContextGL()->GenMailboxCHROMIUM(
  28       mailbox.name);
  29   TextureMailbox texture_mailbox(mailbox, GL_TEXTURE_2D, 0);
  30
  31   TextureLayerImpl* texture_layer_impl =
  32       impl.AddChildToRoot<TextureLayerImpl>();
  33   texture_layer_impl->SetBounds(layer_size);
  34   texture_layer_impl->SetContentBounds(layer_size);
  35   texture_layer_impl->SetDrawsContent(true);
  36   texture_layer_impl->SetTextureMailbox(
  37       texture_mailbox,
  38       SingleReleaseCallbackImpl::Create(base::Bind(&IgnoreCallback)));
  39
  40   impl.CalcDrawProps(viewport_size);
  41
  42   {
  43     SCOPED_TRACE("No occlusion");
  44     gfx::Rect occluded;
  45     impl.AppendQuadsWithOcclusion(texture_layer_impl, occluded);
  46
  47     LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(),
  48                                                  gfx::Rect(layer_size));
  49     EXPECT_EQ(1u, impl.quad_list().size());
  50   }
  51
  52   {
  53     SCOPED_TRACE("Full occlusion");
  54     gfx::Rect occluded(texture_layer_impl->visible_content_rect());
  55     impl.AppendQuadsWithOcclusion(texture_layer_impl, occluded);
  56
  57     LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(), gfx::Rect());
  58     EXPECT_EQ(impl.quad_list().size(), 0u);
  59   }
  60
  61   {
  62     SCOPED_TRACE("Partial occlusion");
  63     gfx::Rect occluded(200, 0, 800, 1000);
  64     impl.AppendQuadsWithOcclusion(texture_layer_impl, occluded);
  65
  66     size_t partially_occluded_count = 0;
  67     LayerTestCommon::VerifyQuadsAreOccluded(
  68         impl.quad_list(), occluded, &partially_occluded_count);
  69     // The layer outputs one quad, which is partially occluded.
  70     EXPECT_EQ(1u, impl.quad_list().size());
  71     EXPECT_EQ(1u, partially_occluded_count);
  72   }
  73 }
  74
  75 }  // namespace
  76 }  // namespace cc