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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "cc/output/dynamic_geometry_binding.h" | 5 #include "cc/output/dynamic_geometry_binding.h" |
6 | 6 |
7 #include "cc/output/gl_renderer.h" // For the GLC() macro. | |
8 #include "gpu/command_buffer/client/gles2_interface.h" | 7 #include "gpu/command_buffer/client/gles2_interface.h" |
| 8 #include "ui/gfx/geometry/quad_f.h" |
9 #include "ui/gfx/geometry/rect_f.h" | 9 #include "ui/gfx/geometry/rect_f.h" |
10 | 10 |
11 namespace cc { | 11 namespace cc { |
12 | 12 |
13 DynamicGeometryBinding::DynamicGeometryBinding(gpu::gles2::GLES2Interface* gl) | 13 DynamicGeometryBinding::DynamicGeometryBinding(gpu::gles2::GLES2Interface* gl) |
14 : gl_(gl), quad_vertices_vbo_(0), quad_elements_vbo_(0) { | 14 : gl_(gl), quad_vertices_vbo_(0), quad_elements_vbo_(0) { |
15 GeometryBindingQuad quads[1]; | 15 GeometryBindingQuad quads[1]; |
16 GeometryBindingQuadIndex quad_indices[1]; | 16 GeometryBindingQuadIndex quad_indices[1]; |
17 | 17 |
18 static_assert(sizeof(GeometryBindingQuad) == 24 * sizeof(float), | 18 static_assert(sizeof(GeometryBindingQuad) == 24 * sizeof(float), |
19 "struct Quad should be densely packed"); | 19 "struct Quad should be densely packed"); |
20 static_assert(sizeof(GeometryBindingQuadIndex) == 6 * sizeof(uint16_t), | 20 static_assert(sizeof(GeometryBindingQuadIndex) == 6 * sizeof(uint16_t), |
21 "struct QuadIndex should be densely packed"); | 21 "struct QuadIndex should be densely packed"); |
22 | 22 |
23 GLC(gl_, gl_->GenBuffers(1, &quad_vertices_vbo_)); | 23 gl_->GenBuffers(1, &quad_vertices_vbo_); |
24 GLC(gl_, gl_->GenBuffers(1, &quad_elements_vbo_)); | 24 gl_->GenBuffers(1, &quad_elements_vbo_); |
25 | 25 |
26 GLC(gl_, gl_->BindBuffer(GL_ARRAY_BUFFER, quad_vertices_vbo_)); | 26 gl_->BindBuffer(GL_ARRAY_BUFFER, quad_vertices_vbo_); |
27 GLC(gl_, gl_->BufferData(GL_ARRAY_BUFFER, sizeof(GeometryBindingQuad) * 1, | 27 gl_->BufferData(GL_ARRAY_BUFFER, sizeof(GeometryBindingQuad) * 1, quads, |
28 quads, GL_DYNAMIC_DRAW)); | 28 GL_DYNAMIC_DRAW); |
29 | 29 |
30 GLC(gl_, gl_->BindBuffer(GL_ELEMENT_ARRAY_BUFFER, quad_elements_vbo_)); | 30 gl_->BindBuffer(GL_ELEMENT_ARRAY_BUFFER, quad_elements_vbo_); |
31 GLC(gl_, gl_->BufferData(GL_ELEMENT_ARRAY_BUFFER, | 31 gl_->BufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(GeometryBindingQuadIndex) * 1, |
32 sizeof(GeometryBindingQuadIndex) * 1, &quad_indices, | 32 &quad_indices, GL_DYNAMIC_DRAW); |
33 GL_DYNAMIC_DRAW)); | |
34 } | 33 } |
35 | 34 |
36 void DynamicGeometryBinding::InitializeCustomQuad(const gfx::QuadF& quad) { | 35 void DynamicGeometryBinding::InitializeCustomQuad(const gfx::QuadF& quad) { |
37 float uv[] = {0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f}; | 36 float uv[] = {0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f}; |
38 InitializeCustomQuadWithUVs(quad, uv); | 37 InitializeCustomQuadWithUVs(quad, uv); |
39 } | 38 } |
40 | 39 |
41 void DynamicGeometryBinding::InitializeCustomQuadWithUVs(const gfx::QuadF& quad, | 40 void DynamicGeometryBinding::InitializeCustomQuadWithUVs(const gfx::QuadF& quad, |
42 const float uv[8]) { | 41 const float uv[8]) { |
43 GeometryBindingVertex v0 = { | 42 GeometryBindingVertex v0 = { |
44 {quad.p1().x(), quad.p1().y(), 0.0f}, {uv[0], uv[1]}, 0.0f}; | 43 {quad.p1().x(), quad.p1().y(), 0.0f}, {uv[0], uv[1]}, 0.0f}; |
45 GeometryBindingVertex v1 = { | 44 GeometryBindingVertex v1 = { |
46 {quad.p2().x(), quad.p2().y(), 0.0f}, {uv[2], uv[3]}, 1.0f}; | 45 {quad.p2().x(), quad.p2().y(), 0.0f}, {uv[2], uv[3]}, 1.0f}; |
47 GeometryBindingVertex v2 = { | 46 GeometryBindingVertex v2 = { |
48 {quad.p3().x(), quad.p3().y(), 0.0f}, {uv[4], uv[5]}, 2.0f}; | 47 {quad.p3().x(), quad.p3().y(), 0.0f}, {uv[4], uv[5]}, 2.0f}; |
49 GeometryBindingVertex v3 = { | 48 GeometryBindingVertex v3 = { |
50 {quad.p4().x(), quad.p4().y(), 0.0f}, {uv[6], uv[7]}, 3.0f}; | 49 {quad.p4().x(), quad.p4().y(), 0.0f}, {uv[6], uv[7]}, 3.0f}; |
51 | 50 |
52 GeometryBindingQuad local_quad = {v0, v1, v2, v3}; | 51 GeometryBindingQuad local_quad = {v0, v1, v2, v3}; |
53 GeometryBindingQuadIndex quad_index( | 52 GeometryBindingQuadIndex quad_index( |
54 static_cast<uint16>(0), static_cast<uint16>(1), static_cast<uint16>(2), | 53 static_cast<uint16>(0), static_cast<uint16>(1), static_cast<uint16>(2), |
55 static_cast<uint16>(3), static_cast<uint16>(0), static_cast<uint16>(2)); | 54 static_cast<uint16>(3), static_cast<uint16>(0), static_cast<uint16>(2)); |
56 | 55 |
57 GLC(gl_, gl_->BufferSubData(GL_ARRAY_BUFFER, 0, sizeof(GeometryBindingQuad), | 56 gl_->BufferSubData(GL_ARRAY_BUFFER, 0, sizeof(GeometryBindingQuad), |
58 &local_quad)); | 57 &local_quad); |
59 GLC(gl_, gl_->BufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, | 58 gl_->BufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, |
60 sizeof(GeometryBindingQuadIndex), &quad_index)); | 59 sizeof(GeometryBindingQuadIndex), &quad_index); |
61 } | 60 } |
62 | 61 |
63 void DynamicGeometryBinding::PrepareForDraw() { | 62 void DynamicGeometryBinding::PrepareForDraw() { |
64 SetupGLContext(gl_, quad_elements_vbo_, quad_vertices_vbo_); | 63 SetupGLContext(gl_, quad_elements_vbo_, quad_vertices_vbo_); |
65 } | 64 } |
66 | 65 |
67 } // namespace cc | 66 } // namespace cc |
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