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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/layers/append_quads_data.h"
      6 #include "cc/layers/heads_up_display_layer_impl.h"
      7 #include "cc/test/fake_impl_proxy.h"
      8 #include "cc/test/fake_layer_tree_host_impl.h"
      9 #include "cc/test/fake_output_surface.h"
     10 #include "cc/test/mock_occlusion_tracker.h"
     11 #include "cc/test/test_shared_bitmap_manager.h"
     12 #include "testing/gtest/include/gtest/gtest.h"
     13 
     14 namespace cc {
     15 namespace {
     16 
     17 void CheckDrawLayer(HeadsUpDisplayLayerImpl* layer,
     18                     ResourceProvider* resource_provider,
     19                     DrawMode draw_mode) {
     20   MockOcclusionTracker<LayerImpl> occlusion_tracker;
     21   scoped_ptr<RenderPass> render_pass = RenderPass::Create();
     22   AppendQuadsData data;
     23   bool will_draw = layer->WillDraw(draw_mode, resource_provider);
     24   if (will_draw)
     25     layer->AppendQuads(render_pass.get(), occlusion_tracker, &data);
     26   layer->UpdateHudTexture(draw_mode, resource_provider);
     27   if (will_draw)
     28     layer->DidDraw(resource_provider);
     29 
     30   size_t expected_quad_list_size = will_draw ? 1 : 0;
     31   EXPECT_EQ(expected_quad_list_size, render_pass->quad_list.size());
     32 }
     33 
     34 TEST(HeadsUpDisplayLayerImplTest, ResourcelessSoftwareDrawAfterResourceLoss) {
     35   FakeImplProxy proxy;
     36   TestSharedBitmapManager shared_bitmap_manager;
     37   FakeLayerTreeHostImpl host_impl(&proxy, &shared_bitmap_manager);
     38   host_impl.CreatePendingTree();
     39   host_impl.InitializeRenderer(
     40       FakeOutputSurface::Create3d().PassAs<OutputSurface>());
     41   scoped_ptr<HeadsUpDisplayLayerImpl> layer =
     42     HeadsUpDisplayLayerImpl::Create(host_impl.pending_tree(), 1);
     43   layer->SetContentBounds(gfx::Size(100, 100));
     44 
     45   // Check regular hardware draw is ok.
     46   CheckDrawLayer(
     47       layer.get(), host_impl.resource_provider(), DRAW_MODE_HARDWARE);
     48 
     49   // Simulate a resource loss on transitioning to resourceless software mode.
     50   layer->ReleaseResources();
     51 
     52   // Should skip resourceless software draw and not crash in UpdateHudTexture.
     53   CheckDrawLayer(layer.get(),
     54                  host_impl.resource_provider(),
     55                  DRAW_MODE_RESOURCELESS_SOFTWARE);
     56 }
     57 
     58 }  // namespace
     59 }  // namespace cc
     60