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Issue 1535833002: Delete CC. (Closed) Base URL: git@github.com:domokit/mojo.git@moz-5
Patch Set: rebase Created 4 years, 11 months ago
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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
3 // found in the LICENSE file.
4
5 #include "cc/output/static_geometry_binding.h"
6
7 #include "cc/output/gl_renderer.h" // For the GLC() macro.
8 #include "gpu/command_buffer/client/gles2_interface.h"
9 #include "ui/gfx/geometry/rect_f.h"
10
11 namespace cc {
12
13 StaticGeometryBinding::StaticGeometryBinding(gpu::gles2::GLES2Interface* gl,
14 const gfx::RectF& quad_vertex_rect)
15 : gl_(gl), quad_vertices_vbo_(0), quad_elements_vbo_(0) {
16 GeometryBindingQuad quads[8];
17 GeometryBindingQuadIndex quad_indices[8];
18
19 static_assert(sizeof(GeometryBindingQuad) == 24 * sizeof(float),
20 "struct Quad should be densely packed");
21 static_assert(sizeof(GeometryBindingQuadIndex) == 6 * sizeof(uint16_t),
22 "struct QuadIndex should be densely packed");
23
24 for (size_t i = 0; i < 8; i++) {
25 GeometryBindingVertex v0 = {
26 {quad_vertex_rect.x(), quad_vertex_rect.bottom(), 0.0f},
27 {0.0f, 1.0f},
28 i * 4.0f + 0.0f};
29 GeometryBindingVertex v1 = {
30 {quad_vertex_rect.x(), quad_vertex_rect.y(), 0.0f},
31 {0.0f, 0.0f},
32 i * 4.0f + 1.0f};
33 GeometryBindingVertex v2 = {
34 {quad_vertex_rect.right(), quad_vertex_rect.y(), 0.0f},
35 {1.0f, 0.0f},
36 i * 4.0f + 2.0f};
37 GeometryBindingVertex v3 = {
38 {quad_vertex_rect.right(), quad_vertex_rect.bottom(), 0.0f},
39 {1.0f, 1.0f},
40 i * 4.0f + 3.0f};
41 GeometryBindingQuad x(v0, v1, v2, v3);
42 quads[i] = x;
43 GeometryBindingQuadIndex y(
44 static_cast<uint16>(0 + 4 * i), static_cast<uint16>(1 + 4 * i),
45 static_cast<uint16>(2 + 4 * i), static_cast<uint16>(3 + 4 * i),
46 static_cast<uint16>(0 + 4 * i), static_cast<uint16>(2 + 4 * i));
47 quad_indices[i] = y;
48 }
49
50 GLC(gl_, gl_->GenBuffers(1, &quad_vertices_vbo_));
51 GLC(gl_, gl_->GenBuffers(1, &quad_elements_vbo_));
52
53 GLC(gl_, gl_->BindBuffer(GL_ARRAY_BUFFER, quad_vertices_vbo_));
54 GLC(gl_, gl_->BufferData(GL_ARRAY_BUFFER, sizeof(GeometryBindingQuad) * 8,
55 quads, GL_STATIC_DRAW));
56
57 GLC(gl_, gl_->BindBuffer(GL_ELEMENT_ARRAY_BUFFER, quad_elements_vbo_));
58 GLC(gl_, gl_->BufferData(GL_ELEMENT_ARRAY_BUFFER,
59 sizeof(GeometryBindingQuadIndex) * 8, &quad_indices,
60 GL_STATIC_DRAW));
61 }
62
63 StaticGeometryBinding::~StaticGeometryBinding() {
64 gl_->DeleteBuffers(1, &quad_vertices_vbo_);
65 gl_->DeleteBuffers(1, &quad_elements_vbo_);
66 }
67
68 void StaticGeometryBinding::PrepareForDraw() {
69 SetupGLContext(gl_, quad_elements_vbo_, quad_vertices_vbo_);
70 }
71
72 } // namespace cc
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