src/cc/layers/heads_up_display_layer_impl_unittest.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/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_quad_culler.h"
  11 #include "testing/gtest/include/gtest/gtest.h"
  12
  13 namespace cc {
  14 namespace {
  15
  16 void CheckDrawLayer(HeadsUpDisplayLayerImpl* layer,
  17                     ResourceProvider* resource_provider,
  18                     DrawMode draw_mode) {
  19   MockQuadCuller quad_culler;
  20   AppendQuadsData data;
  21   bool will_draw = layer->WillDraw(draw_mode, resource_provider);
  22   if (will_draw)
  23     layer->AppendQuads(&quad_culler, &data);
  24   layer->UpdateHudTexture(draw_mode, resource_provider);
  25   if (will_draw)
  26     layer->DidDraw(resource_provider);
  27
  28   size_t expected_quad_list_size = will_draw ? 1 : 0;
  29   EXPECT_EQ(expected_quad_list_size, quad_culler.quad_list().size());
  30 }
  31
  32 TEST(HeadsUpDisplayLayerImplTest, ResourcelessSoftwareDrawAfterResourceLoss) {
  33   FakeImplProxy proxy;
  34   FakeLayerTreeHostImpl host_impl(&proxy);
  35   host_impl.CreatePendingTree();
  36   host_impl.InitializeRenderer(CreateFakeOutputSurface());
  37   scoped_ptr<HeadsUpDisplayLayerImpl> layer =
  38     HeadsUpDisplayLayerImpl::Create(host_impl.pending_tree(), 1);
  39   layer->SetContentBounds(gfx::Size(100, 100));
  40
  41   // Check regular hardware draw is ok.
  42   CheckDrawLayer(
  43       layer.get(), host_impl.resource_provider(), DRAW_MODE_HARDWARE);
  44
  45   // Simulate a resource loss on transitioning to resourceless software mode.
  46   layer->DidLoseOutputSurface();
  47
  48   // Should skip resourceless software draw and not crash in UpdateHudTexture.
  49   CheckDrawLayer(layer.get(),
  50                  host_impl.resource_provider(),
  51                  DRAW_MODE_RESOURCELESS_SOFTWARE);
  52 }
  53
  54 }  // namespace
  55 }  // namespace cc