cc/test/pixel_test.cc

   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/pixel_test.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/path_service.h"
   9 #include "base/run_loop.h"
  10 #include "cc/base/switches.h"
  11 #include "cc/output/compositor_frame_metadata.h"
  12 #include "cc/output/copy_output_request.h"
  13 #include "cc/output/copy_output_result.h"
  14 #include "cc/output/gl_renderer.h"
  15 #include "cc/output/output_surface_client.h"
  16 #include "cc/output/software_renderer.h"
  17 #include "cc/resources/resource_provider.h"
  18 #include "cc/resources/texture_mailbox_deleter.h"
  19 #include "cc/test/fake_output_surface_client.h"
  20 #include "cc/test/paths.h"
  21 #include "cc/test/pixel_test_output_surface.h"
  22 #include "cc/test/pixel_test_software_output_device.h"
  23 #include "cc/test/pixel_test_utils.h"
  24 #include "cc/test/test_in_process_context_provider.h"
  25 #include "testing/gtest/include/gtest/gtest.h"
  26 #include "ui/gl/gl_implementation.h"
  27
  28 namespace cc {
  29
  30 PixelTest::PixelTest()
  31     : device_viewport_size_(gfx::Size(200, 200)),
  32       disable_picture_quad_image_filtering_(false),
  33       output_surface_client_(new FakeOutputSurfaceClient) {}
  34
  35 PixelTest::~PixelTest() {}
  36
  37 bool PixelTest::RunPixelTest(RenderPassList* pass_list,
  38                              OffscreenContextOption provide_offscreen_context,
  39                              const base::FilePath& ref_file,
  40                              const PixelComparator& comparator) {
  41   return RunPixelTestWithReadbackTarget(pass_list,
  42                                         pass_list->back(),
  43                                         provide_offscreen_context,
  44                                         ref_file,
  45                                         comparator);
  46 }
  47
  48 bool PixelTest::RunPixelTestWithReadbackTarget(
  49     RenderPassList* pass_list,
  50     RenderPass* target,
  51     OffscreenContextOption provide_offscreen_context,
  52     const base::FilePath& ref_file,
  53     const PixelComparator& comparator) {
  54   base::RunLoop run_loop;
  55
  56   target->copy_requests.push_back(CopyOutputRequest::CreateBitmapRequest(
  57       base::Bind(&PixelTest::ReadbackResult,
  58                  base::Unretained(this),
  59                  run_loop.QuitClosure())));
  60
  61   scoped_refptr<ContextProvider> offscreen_contexts;
  62   switch (provide_offscreen_context) {
  63     case NoOffscreenContext:
  64       break;
  65     case WithOffscreenContext:
  66       offscreen_contexts = new TestInProcessContextProvider;
  67       CHECK(offscreen_contexts->BindToCurrentThread());
  68       break;
  69   }
  70
  71   float device_scale_factor = 1.f;
  72   gfx::Rect device_viewport_rect =
  73       gfx::Rect(device_viewport_size_) + external_device_viewport_offset_;
  74   gfx::Rect device_clip_rect = external_device_clip_rect_.IsEmpty()
  75                                    ? device_viewport_rect
  76                                    : external_device_clip_rect_;
  77   bool allow_partial_swap = true;
  78
  79   renderer_->DecideRenderPassAllocationsForFrame(*pass_list);
  80   renderer_->DrawFrame(pass_list,
  81                        offscreen_contexts.get(),
  82                        device_scale_factor,
  83                        device_viewport_rect,
  84                        device_clip_rect,
  85                        allow_partial_swap,
  86                        disable_picture_quad_image_filtering_);
  87
  88   // Wait for the readback to complete.
  89   resource_provider_->Finish();
  90   run_loop.Run();
  91
  92   return PixelsMatchReference(ref_file, comparator);
  93 }
  94
  95 void PixelTest::ReadbackResult(base::Closure quit_run_loop,
  96                                scoped_ptr<CopyOutputResult> result) {
  97   ASSERT_TRUE(result->HasBitmap());
  98   result_bitmap_ = result->TakeBitmap().Pass();
  99   quit_run_loop.Run();
 100 }
 101
 102 bool PixelTest::PixelsMatchReference(const base::FilePath& ref_file,
 103                                      const PixelComparator& comparator) {
 104   base::FilePath test_data_dir;
 105   if (!PathService::Get(CCPaths::DIR_TEST_DATA, &test_data_dir))
 106     return false;
 107
 108   // If this is false, we didn't set up a readback on a render pass.
 109   if (!result_bitmap_)
 110     return false;
 111
 112   CommandLine* cmd = CommandLine::ForCurrentProcess();
 113   if (cmd->HasSwitch(switches::kCCRebaselinePixeltests))
 114     return WritePNGFile(*result_bitmap_, test_data_dir.Append(ref_file), true);
 115
 116   return MatchesPNGFile(
 117       *result_bitmap_, test_data_dir.Append(ref_file), comparator);
 118 }
 119
 120 void PixelTest::SetUpGLRenderer(bool use_skia_gpu_backend) {
 121   CHECK(gfx::InitializeGLBindings(gfx::kGLImplementationOSMesaGL));
 122
 123   output_surface_.reset(
 124       new PixelTestOutputSurface(new TestInProcessContextProvider));
 125   output_surface_->BindToClient(output_surface_client_.get());
 126
 127   resource_provider_ =
 128       ResourceProvider::Create(output_surface_.get(), NULL, 0, false, 1);
 129
 130   texture_mailbox_deleter_ = make_scoped_ptr(new TextureMailboxDeleter);
 131
 132   renderer_ = GLRenderer::Create(this,
 133                                  &settings_,
 134                                  output_surface_.get(),
 135                                  resource_provider_.get(),
 136                                  texture_mailbox_deleter_.get(),
 137                                  0).PassAs<DirectRenderer>();
 138 }
 139
 140 void PixelTest::ForceExpandedViewport(gfx::Size surface_expansion) {
 141   static_cast<PixelTestOutputSurface*>(output_surface_.get())
 142       ->set_surface_expansion_size(surface_expansion);
 143   SoftwareOutputDevice* device = output_surface_->software_device();
 144   if (device) {
 145     static_cast<PixelTestSoftwareOutputDevice*>(device)
 146         ->set_surface_expansion_size(surface_expansion);
 147   }
 148 }
 149
 150 void PixelTest::ForceViewportOffset(gfx::Vector2d viewport_offset) {
 151   external_device_viewport_offset_ = viewport_offset;
 152 }
 153
 154 void PixelTest::ForceDeviceClip(const gfx::Rect& clip) {
 155   external_device_clip_rect_ = clip;
 156 }
 157
 158 void PixelTest::EnableExternalStencilTest() {
 159   static_cast<PixelTestOutputSurface*>(output_surface_.get())
 160       ->set_has_external_stencil_test(true);
 161 }
 162
 163 void PixelTest::SetUpSoftwareRenderer() {
 164   scoped_ptr<SoftwareOutputDevice> device(new PixelTestSoftwareOutputDevice());
 165   output_surface_.reset(new PixelTestOutputSurface(device.Pass()));
 166   output_surface_->BindToClient(output_surface_client_.get());
 167   resource_provider_ =
 168       ResourceProvider::Create(output_surface_.get(), NULL, 0, false, 1);
 169   renderer_ = SoftwareRenderer::Create(
 170       this, &settings_, output_surface_.get(), resource_provider_.get())
 171                   .PassAs<DirectRenderer>();
 172 }
 173
 174 }  // namespace cc