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      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/message_loop/message_loop_proxy.h"
      9 #include "base/path_service.h"
     10 #include "base/run_loop.h"
     11 #include "cc/base/switches.h"
     12 #include "cc/output/compositor_frame_metadata.h"
     13 #include "cc/output/copy_output_request.h"
     14 #include "cc/output/copy_output_result.h"
     15 #include "cc/output/gl_renderer.h"
     16 #include "cc/output/output_surface_client.h"
     17 #include "cc/output/software_renderer.h"
     18 #include "cc/resources/raster_worker_pool.h"
     19 #include "cc/resources/resource_provider.h"
     20 #include "cc/resources/texture_mailbox_deleter.h"
     21 #include "cc/test/fake_output_surface_client.h"
     22 #include "cc/test/paths.h"
     23 #include "cc/test/pixel_test_output_surface.h"
     24 #include "cc/test/pixel_test_software_output_device.h"
     25 #include "cc/test/pixel_test_utils.h"
     26 #include "cc/test/test_in_process_context_provider.h"
     27 #include "cc/test/test_shared_bitmap_manager.h"
     28 #include "cc/trees/blocking_task_runner.h"
     29 #include "gpu/command_buffer/client/gles2_interface.h"
     30 #include "testing/gtest/include/gtest/gtest.h"
     31 
     32 namespace cc {
     33 
     34 PixelTest::PixelTest()
     35     : device_viewport_size_(gfx::Size(200, 200)),
     36       disable_picture_quad_image_filtering_(false),
     37       output_surface_client_(new FakeOutputSurfaceClient),
     38       main_thread_task_runner_(
     39           BlockingTaskRunner::Create(base::MessageLoopProxy::current())) {
     40 }
     41 PixelTest::~PixelTest() {}
     42 
     43 bool PixelTest::RunPixelTest(RenderPassList* pass_list,
     44                              const base::FilePath& ref_file,
     45                              const PixelComparator& comparator) {
     46   return RunPixelTestWithReadbackTarget(pass_list,
     47                                         pass_list->back(),
     48                                         ref_file,
     49                                         comparator);
     50 }
     51 
     52 bool PixelTest::RunPixelTestWithReadbackTarget(
     53     RenderPassList* pass_list,
     54     RenderPass* target,
     55     const base::FilePath& ref_file,
     56     const PixelComparator& comparator) {
     57   base::RunLoop run_loop;
     58 
     59   target->copy_requests.push_back(CopyOutputRequest::CreateBitmapRequest(
     60       base::Bind(&PixelTest::ReadbackResult,
     61                  base::Unretained(this),
     62                  run_loop.QuitClosure())));
     63 
     64   float device_scale_factor = 1.f;
     65   gfx::Rect device_viewport_rect =
     66       gfx::Rect(device_viewport_size_) + external_device_viewport_offset_;
     67   gfx::Rect device_clip_rect = external_device_clip_rect_.IsEmpty()
     68                                    ? device_viewport_rect
     69                                    : external_device_clip_rect_;
     70   renderer_->DecideRenderPassAllocationsForFrame(*pass_list);
     71   renderer_->DrawFrame(pass_list,
     72                        device_scale_factor,
     73                        device_viewport_rect,
     74                        device_clip_rect,
     75                        disable_picture_quad_image_filtering_);
     76 
     77   // Wait for the readback to complete.
     78   if (output_surface_->context_provider())
     79     output_surface_->context_provider()->ContextGL()->Finish();
     80   run_loop.Run();
     81 
     82   return PixelsMatchReference(ref_file, comparator);
     83 }
     84 
     85 void PixelTest::ReadbackResult(base::Closure quit_run_loop,
     86                                scoped_ptr<CopyOutputResult> result) {
     87   ASSERT_TRUE(result->HasBitmap());
     88   result_bitmap_ = result->TakeBitmap().Pass();
     89   quit_run_loop.Run();
     90 }
     91 
     92 bool PixelTest::PixelsMatchReference(const base::FilePath& ref_file,
     93                                      const PixelComparator& comparator) {
     94   base::FilePath test_data_dir;
     95   if (!PathService::Get(CCPaths::DIR_TEST_DATA, &test_data_dir))
     96     return false;
     97 
     98   // If this is false, we didn't set up a readback on a render pass.
     99   if (!result_bitmap_)
    100     return false;
    101 
    102   CommandLine* cmd = CommandLine::ForCurrentProcess();
    103   if (cmd->HasSwitch(switches::kCCRebaselinePixeltests))
    104     return WritePNGFile(*result_bitmap_, test_data_dir.Append(ref_file), true);
    105 
    106   return MatchesPNGFile(
    107       *result_bitmap_, test_data_dir.Append(ref_file), comparator);
    108 }
    109 
    110 void PixelTest::SetUpGLRenderer(bool use_skia_gpu_backend) {
    111   enable_pixel_output_.reset(new gfx::DisableNullDrawGLBindings);
    112 
    113   output_surface_.reset(
    114       new PixelTestOutputSurface(new TestInProcessContextProvider));
    115   output_surface_->BindToClient(output_surface_client_.get());
    116 
    117   shared_bitmap_manager_.reset(new TestSharedBitmapManager());
    118   resource_provider_ = ResourceProvider::Create(output_surface_.get(),
    119                                                 shared_bitmap_manager_.get(),
    120                                                 main_thread_task_runner_.get(),
    121                                                 0,
    122                                                 false,
    123                                                 1,
    124                                                 false);
    125 
    126   texture_mailbox_deleter_ = make_scoped_ptr(
    127       new TextureMailboxDeleter(base::MessageLoopProxy::current()));
    128 
    129   renderer_ = GLRenderer::Create(this,
    130                                  &settings_,
    131                                  output_surface_.get(),
    132                                  resource_provider_.get(),
    133                                  texture_mailbox_deleter_.get(),
    134                                  0).PassAs<DirectRenderer>();
    135 }
    136 
    137 void PixelTest::ForceExpandedViewport(const gfx::Size& surface_expansion) {
    138   static_cast<PixelTestOutputSurface*>(output_surface_.get())
    139       ->set_surface_expansion_size(surface_expansion);
    140   SoftwareOutputDevice* device = output_surface_->software_device();
    141   if (device) {
    142     static_cast<PixelTestSoftwareOutputDevice*>(device)
    143         ->set_surface_expansion_size(surface_expansion);
    144   }
    145 }
    146 
    147 void PixelTest::ForceViewportOffset(const gfx::Vector2d& viewport_offset) {
    148   external_device_viewport_offset_ = viewport_offset;
    149 }
    150 
    151 void PixelTest::ForceDeviceClip(const gfx::Rect& clip) {
    152   external_device_clip_rect_ = clip;
    153 }
    154 
    155 void PixelTest::EnableExternalStencilTest() {
    156   static_cast<PixelTestOutputSurface*>(output_surface_.get())
    157       ->set_has_external_stencil_test(true);
    158 }
    159 
    160 void PixelTest::SetUpSoftwareRenderer() {
    161   scoped_ptr<SoftwareOutputDevice> device(new PixelTestSoftwareOutputDevice());
    162   output_surface_.reset(new PixelTestOutputSurface(device.Pass()));
    163   output_surface_->BindToClient(output_surface_client_.get());
    164   shared_bitmap_manager_.reset(new TestSharedBitmapManager());
    165   resource_provider_ = ResourceProvider::Create(output_surface_.get(),
    166                                                 shared_bitmap_manager_.get(),
    167                                                 main_thread_task_runner_.get(),
    168                                                 0,
    169                                                 false,
    170                                                 1,
    171                                                 false);
    172   renderer_ =
    173       SoftwareRenderer::Create(
    174           this, &settings_, output_surface_.get(), resource_provider_.get())
    175           .PassAs<DirectRenderer>();
    176 }
    177 
    178 }  // namespace cc
    179