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Side by Side Diff: cc/GeometryBinding.cpp

Issue 11122003: [cc] Rename all cc/ filenames to Chromium style (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 8 years, 2 months ago
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1 // Copyright 2011 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 "config.h"
6
7 #if USE(ACCELERATED_COMPOSITING)
8
9 #include "GeometryBinding.h"
10
11 #include "CCRendererGL.h" // For the GLC() macro.
12 #include "GraphicsContext3D.h"
13 #include <public/WebGraphicsContext3D.h>
14
15 namespace cc {
16
17 GeometryBinding::GeometryBinding(WebKit::WebGraphicsContext3D* context, const Fl oatRect& quadVertexRect)
18 : m_context(context)
19 , m_quadVerticesVbo(0)
20 , m_quadElementsVbo(0)
21 , m_initialized(false)
22 {
23 // Vertex positions and texture coordinates for the 4 corners of a 1x1 quad.
24 float vertices[] = { quadVertexRect.x(), quadVertexRect.maxY(), 0.0f, 0.0f, 1.0f,
25 quadVertexRect.x(), quadVertexRect.y(), 0.0f, 0.0f, 0. 0f,
26 quadVertexRect.maxX(), quadVertexRect.y(), 0.0f, 1.0f, 0.0f,
27 quadVertexRect.maxX(), quadVertexRect.maxY(), 0.0f, 1. 0f, 1.0f };
28 uint16_t indices[] = { 0, 1, 2, 0, 2, 3, // The two triangles that make up t he layer quad.
29 0, 1, 2, 3}; // A line path for drawing the layer bor der.
30
31 GLC(m_context, m_quadVerticesVbo = m_context->createBuffer());
32 GLC(m_context, m_quadElementsVbo = m_context->createBuffer());
33 GLC(m_context, m_context->bindBuffer(GraphicsContext3D::ARRAY_BUFFER, m_quad VerticesVbo));
34 GLC(m_context, m_context->bufferData(GraphicsContext3D::ARRAY_BUFFER, sizeof (vertices), vertices, GraphicsContext3D::STATIC_DRAW));
35 GLC(m_context, m_context->bindBuffer(GraphicsContext3D::ELEMENT_ARRAY_BUFFER , m_quadElementsVbo));
36 GLC(m_context, m_context->bufferData(GraphicsContext3D::ELEMENT_ARRAY_BUFFER , sizeof(indices), indices, GraphicsContext3D::STATIC_DRAW));
37
38 m_initialized = true;
39 }
40
41 GeometryBinding::~GeometryBinding()
42 {
43 GLC(m_context, m_context->deleteBuffer(m_quadVerticesVbo));
44 GLC(m_context, m_context->deleteBuffer(m_quadElementsVbo));
45 }
46
47 void GeometryBinding::prepareForDraw()
48 {
49 GLC(m_context, m_context->bindBuffer(GraphicsContext3D::ARRAY_BUFFER, quadVe rticesVbo()));
50 GLC(m_context, m_context->bindBuffer(GraphicsContext3D::ELEMENT_ARRAY_BUFFER , quadElementsVbo()));
51 unsigned offset = 0;
52 GLC(m_context, m_context->vertexAttribPointer(positionAttribLocation(), 3, G raphicsContext3D::FLOAT, false, 5 * sizeof(float), offset));
53 offset += 3 * sizeof(float);
54 GLC(m_context, m_context->vertexAttribPointer(texCoordAttribLocation(), 2, G raphicsContext3D::FLOAT, false, 5 * sizeof(float), offset));
55 GLC(m_context, m_context->enableVertexAttribArray(positionAttribLocation())) ;
56 GLC(m_context, m_context->enableVertexAttribArray(texCoordAttribLocation())) ;
57 }
58
59 } // namespace cc
60
61 #endif // USE(ACCELERATED_COMPOSITING)
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