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comparison: gfx/angle/src/libGLESv2/Buffer.cpp
gfx/angle/src/libGLESv2/Buffer.cpp
- branch
- TOR_BUG_9701
- changeset 3
- 141e0f1194b1
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| -1:000000000000 | 0:6daf484d7060 |
|---|---|
| 1 #include "precompiled.h" | |
| 2 // | |
| 3 // Copyright (c) 2002-2013 The ANGLE Project Authors. All rights reserved. | |
| 4 // Use of this source code is governed by a BSD-style license that can be | |
| 5 // found in the LICENSE file. | |
| 6 // | |
| 7 | |
| 8 // Buffer.cpp: Implements the gl::Buffer class, representing storage of vertex and/or | |
| 9 // index data. Implements GL buffer objects and related functionality. | |
| 10 // [OpenGL ES 2.0.24] section 2.9 page 21. | |
| 11 | |
| 12 #include "libGLESv2/Buffer.h" | |
| 13 | |
| 14 #include "libGLESv2/renderer/VertexBuffer.h" | |
| 15 #include "libGLESv2/renderer/IndexBuffer.h" | |
| 16 #include "libGLESv2/renderer/BufferStorage.h" | |
| 17 #include "libGLESv2/renderer/Renderer.h" | |
| 18 | |
| 19 namespace gl | |
| 20 { | |
| 21 | |
| 22 Buffer::Buffer(rx::Renderer *renderer, GLuint id) : RefCountObject(id) | |
| 23 { | |
| 24 mRenderer = renderer; | |
| 25 mUsage = GL_DYNAMIC_DRAW; | |
| 26 | |
| 27 mBufferStorage = renderer->createBufferStorage(); | |
| 28 mStaticVertexBuffer = NULL; | |
| 29 mStaticIndexBuffer = NULL; | |
| 30 mUnmodifiedDataUse = 0; | |
| 31 } | |
| 32 | |
| 33 Buffer::~Buffer() | |
| 34 { | |
| 35 delete mBufferStorage; | |
| 36 delete mStaticVertexBuffer; | |
| 37 delete mStaticIndexBuffer; | |
| 38 } | |
| 39 | |
| 40 void Buffer::bufferData(const void *data, GLsizeiptr size, GLenum usage) | |
| 41 { | |
| 42 mBufferStorage->clear(); | |
| 43 mIndexRangeCache.clear(); | |
| 44 mBufferStorage->setData(data, size, 0); | |
| 45 | |
| 46 mUsage = usage; | |
| 47 | |
| 48 invalidateStaticData(); | |
| 49 | |
| 50 if (usage == GL_STATIC_DRAW) | |
| 51 { | |
| 52 mStaticVertexBuffer = new rx::StaticVertexBufferInterface(mRenderer); | |
| 53 mStaticIndexBuffer = new rx::StaticIndexBufferInterface(mRenderer); | |
| 54 } | |
| 55 } | |
| 56 | |
| 57 void Buffer::bufferSubData(const void *data, GLsizeiptr size, GLintptr offset) | |
| 58 { | |
| 59 mBufferStorage->setData(data, size, offset); | |
| 60 mIndexRangeCache.invalidateRange(offset, size); | |
| 61 | |
| 62 if ((mStaticVertexBuffer && mStaticVertexBuffer->getBufferSize() != 0) || (mStaticIndexBuffer && mStaticIndexBuffer->getBufferSize() != 0)) | |
| 63 { | |
| 64 invalidateStaticData(); | |
| 65 } | |
| 66 | |
| 67 mUnmodifiedDataUse = 0; | |
| 68 } | |
| 69 | |
| 70 rx::BufferStorage *Buffer::getStorage() const | |
| 71 { | |
| 72 return mBufferStorage; | |
| 73 } | |
| 74 | |
| 75 unsigned int Buffer::size() | |
| 76 { | |
| 77 return mBufferStorage->getSize(); | |
| 78 } | |
| 79 | |
| 80 GLenum Buffer::usage() const | |
| 81 { | |
| 82 return mUsage; | |
| 83 } | |
| 84 | |
| 85 rx::StaticVertexBufferInterface *Buffer::getStaticVertexBuffer() | |
| 86 { | |
| 87 return mStaticVertexBuffer; | |
| 88 } | |
| 89 | |
| 90 rx::StaticIndexBufferInterface *Buffer::getStaticIndexBuffer() | |
| 91 { | |
| 92 return mStaticIndexBuffer; | |
| 93 } | |
| 94 | |
| 95 void Buffer::invalidateStaticData() | |
| 96 { | |
| 97 delete mStaticVertexBuffer; | |
| 98 mStaticVertexBuffer = NULL; | |
| 99 | |
| 100 delete mStaticIndexBuffer; | |
| 101 mStaticIndexBuffer = NULL; | |
| 102 | |
| 103 mUnmodifiedDataUse = 0; | |
| 104 } | |
| 105 | |
| 106 // Creates static buffers if sufficient used data has been left unmodified | |
| 107 void Buffer::promoteStaticUsage(int dataSize) | |
| 108 { | |
| 109 if (!mStaticVertexBuffer && !mStaticIndexBuffer) | |
| 110 { | |
| 111 mUnmodifiedDataUse += dataSize; | |
| 112 | |
| 113 if (mUnmodifiedDataUse > 3 * mBufferStorage->getSize()) | |
| 114 { | |
| 115 mStaticVertexBuffer = new rx::StaticVertexBufferInterface(mRenderer); | |
| 116 mStaticIndexBuffer = new rx::StaticIndexBufferInterface(mRenderer); | |
| 117 } | |
| 118 } | |
| 119 } | |
| 120 | |
| 121 rx::IndexRangeCache *Buffer::getIndexRangeCache() | |
| 122 { | |
| 123 return &mIndexRangeCache; | |
| 124 } | |
| 125 | |
| 126 } |
