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1 // Copyright 2012 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/solid_color_layer_impl.h" | |
6 | |
7 #include <algorithm> | |
8 | |
9 #include "cc/layers/append_quads_data.h" | |
10 #include "cc/quads/solid_color_draw_quad.h" | |
11 #include "cc/trees/occlusion.h" | |
12 | |
13 namespace cc { | |
14 | |
15 namespace { | |
16 const int kSolidQuadTileSize = 256; | |
17 } | |
18 | |
19 SolidColorLayerImpl::SolidColorLayerImpl(LayerTreeImpl* tree_impl, int id) | |
20 : LayerImpl(tree_impl, id) { | |
21 } | |
22 | |
23 SolidColorLayerImpl::~SolidColorLayerImpl() {} | |
24 | |
25 scoped_ptr<LayerImpl> SolidColorLayerImpl::CreateLayerImpl( | |
26 LayerTreeImpl* tree_impl) { | |
27 return SolidColorLayerImpl::Create(tree_impl, id()); | |
28 } | |
29 | |
30 void SolidColorLayerImpl::AppendSolidQuads( | |
31 RenderPass* render_pass, | |
32 const Occlusion& occlusion_in_content_space, | |
33 SharedQuadState* shared_quad_state, | |
34 const gfx::Rect& visible_content_rect, | |
35 SkColor color, | |
36 AppendQuadsData* append_quads_data) { | |
37 // We create a series of smaller quads instead of just one large one so that | |
38 // the culler can reduce the total pixels drawn. | |
39 int right = visible_content_rect.right(); | |
40 int bottom = visible_content_rect.bottom(); | |
41 for (int x = visible_content_rect.x(); x < visible_content_rect.right(); | |
42 x += kSolidQuadTileSize) { | |
43 for (int y = visible_content_rect.y(); y < visible_content_rect.bottom(); | |
44 y += kSolidQuadTileSize) { | |
45 gfx::Rect quad_rect(x, | |
46 y, | |
47 std::min(right - x, kSolidQuadTileSize), | |
48 std::min(bottom - y, kSolidQuadTileSize)); | |
49 gfx::Rect visible_quad_rect = | |
50 occlusion_in_content_space.GetUnoccludedContentRect(quad_rect); | |
51 if (visible_quad_rect.IsEmpty()) | |
52 continue; | |
53 | |
54 append_quads_data->visible_content_area += | |
55 visible_quad_rect.width() * visible_quad_rect.height(); | |
56 | |
57 SolidColorDrawQuad* quad = | |
58 render_pass->CreateAndAppendDrawQuad<SolidColorDrawQuad>(); | |
59 quad->SetNew( | |
60 shared_quad_state, quad_rect, visible_quad_rect, color, false); | |
61 } | |
62 } | |
63 } | |
64 | |
65 void SolidColorLayerImpl::AppendQuads( | |
66 RenderPass* render_pass, | |
67 AppendQuadsData* append_quads_data) { | |
68 SharedQuadState* shared_quad_state = | |
69 render_pass->CreateAndAppendSharedQuadState(); | |
70 PopulateSharedQuadState(shared_quad_state); | |
71 | |
72 AppendDebugBorderQuad( | |
73 render_pass, content_bounds(), shared_quad_state, append_quads_data); | |
74 | |
75 // TODO(hendrikw): We need to pass the visible content rect rather than | |
76 // |content_bounds()| here. | |
77 AppendSolidQuads(render_pass, draw_properties().occlusion_in_content_space, | |
78 shared_quad_state, gfx::Rect(content_bounds()), | |
79 background_color(), append_quads_data); | |
80 } | |
81 | |
82 const char* SolidColorLayerImpl::LayerTypeAsString() const { | |
83 return "cc::SolidColorLayerImpl"; | |
84 } | |
85 | |
86 } // namespace cc | |
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