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| 1 /* | |
| 2 * Copyright (C) 2011 Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * 1. Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer in the | |
| 11 * documentation and/or other materials provided with the distribution. | |
| 12 * | |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
| 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 */ | |
| 25 | |
| 26 #include "sky/engine/config.h" | |
| 27 | |
| 28 #include "sky/engine/core/html/canvas/WebGLVertexArrayObjectOES.h" | |
| 29 | |
| 30 #include "sky/engine/core/html/canvas/WebGLRenderingContextBase.h" | |
| 31 | |
| 32 namespace blink { | |
| 33 | |
| 34 PassRefPtr<WebGLVertexArrayObjectOES> WebGLVertexArrayObjectOES::create(WebGLRen
deringContextBase* ctx, VaoType type) | |
| 35 { | |
| 36 return adoptRef(new WebGLVertexArrayObjectOES(ctx, type)); | |
| 37 } | |
| 38 | |
| 39 WebGLVertexArrayObjectOES::WebGLVertexArrayObjectOES(WebGLRenderingContextBase*
ctx, VaoType type) | |
| 40 : WebGLContextObject(ctx) | |
| 41 , m_type(type) | |
| 42 , m_hasEverBeenBound(false) | |
| 43 #if ENABLE(OILPAN) | |
| 44 , m_destructionInProgress(false) | |
| 45 #endif | |
| 46 , m_boundElementArrayBuffer(nullptr) | |
| 47 { | |
| 48 m_vertexAttribState.resize(ctx->maxVertexAttribs()); | |
| 49 | |
| 50 switch (m_type) { | |
| 51 case VaoTypeDefault: | |
| 52 break; | |
| 53 default: | |
| 54 setObject(context()->webContext()->createVertexArrayOES()); | |
| 55 break; | |
| 56 } | |
| 57 } | |
| 58 | |
| 59 WebGLVertexArrayObjectOES::~WebGLVertexArrayObjectOES() | |
| 60 { | |
| 61 #if ENABLE(OILPAN) | |
| 62 m_destructionInProgress = true; | |
| 63 #endif | |
| 64 | |
| 65 // Delete the platform framebuffer resource. Explicit detachment | |
| 66 // is for the benefit of Oilpan, where this vertex array object | |
| 67 // isn't detached when it and the WebGLRenderingContextBase object | |
| 68 // it is registered with are both finalized. Without Oilpan, the | |
| 69 // object will have been detached. | |
| 70 // | |
| 71 // To keep the code regular, the trivial detach()ment is always | |
| 72 // performed. | |
| 73 detachAndDeleteObject(); | |
| 74 } | |
| 75 | |
| 76 void WebGLVertexArrayObjectOES::dispatchDetached(blink::WebGraphicsContext3D* co
ntext3d) | |
| 77 { | |
| 78 if (m_boundElementArrayBuffer) | |
| 79 m_boundElementArrayBuffer->onDetached(context3d); | |
| 80 | |
| 81 for (size_t i = 0; i < m_vertexAttribState.size(); ++i) { | |
| 82 VertexAttribState& state = m_vertexAttribState[i]; | |
| 83 if (state.bufferBinding) | |
| 84 state.bufferBinding->onDetached(context3d); | |
| 85 } | |
| 86 } | |
| 87 | |
| 88 void WebGLVertexArrayObjectOES::deleteObjectImpl(blink::WebGraphicsContext3D* co
ntext3d, Platform3DObject object) | |
| 89 { | |
| 90 switch (m_type) { | |
| 91 case VaoTypeDefault: | |
| 92 break; | |
| 93 default: | |
| 94 context3d->deleteVertexArrayOES(object); | |
| 95 break; | |
| 96 } | |
| 97 | |
| 98 #if ENABLE(OILPAN) | |
| 99 // These m_boundElementArrayBuffer and m_vertexAttribState heap | |
| 100 // objects must not be accessed during destruction in the oilpan | |
| 101 // build. They could have been already finalized. The finalizers | |
| 102 // of these objects (and their elements) will themselves handle | |
| 103 // detachment. | |
| 104 if (!m_destructionInProgress) | |
| 105 dispatchDetached(context3d); | |
| 106 #else | |
| 107 dispatchDetached(context3d); | |
| 108 #endif | |
| 109 } | |
| 110 | |
| 111 void WebGLVertexArrayObjectOES::setElementArrayBuffer(PassRefPtr<WebGLBuffer> bu
ffer) | |
| 112 { | |
| 113 if (buffer) | |
| 114 buffer->onAttached(); | |
| 115 if (m_boundElementArrayBuffer) | |
| 116 m_boundElementArrayBuffer->onDetached(context()->webContext()); | |
| 117 m_boundElementArrayBuffer = buffer; | |
| 118 } | |
| 119 | |
| 120 void WebGLVertexArrayObjectOES::setVertexAttribState( | |
| 121 GLuint index, GLsizei bytesPerElement, GLint size, GLenum type, GLboolean no
rmalized, GLsizei stride, GLintptr offset, PassRefPtr<WebGLBuffer> buffer) | |
| 122 { | |
| 123 GLsizei validatedStride = stride ? stride : bytesPerElement; | |
| 124 | |
| 125 VertexAttribState& state = m_vertexAttribState[index]; | |
| 126 | |
| 127 if (buffer) | |
| 128 buffer->onAttached(); | |
| 129 if (state.bufferBinding) | |
| 130 state.bufferBinding->onDetached(context()->webContext()); | |
| 131 | |
| 132 state.bufferBinding = buffer; | |
| 133 state.bytesPerElement = bytesPerElement; | |
| 134 state.size = size; | |
| 135 state.type = type; | |
| 136 state.normalized = normalized; | |
| 137 state.stride = validatedStride; | |
| 138 state.originalStride = stride; | |
| 139 state.offset = offset; | |
| 140 } | |
| 141 | |
| 142 void WebGLVertexArrayObjectOES::unbindBuffer(PassRefPtr<WebGLBuffer> buffer) | |
| 143 { | |
| 144 if (m_boundElementArrayBuffer == buffer) { | |
| 145 m_boundElementArrayBuffer->onDetached(context()->webContext()); | |
| 146 m_boundElementArrayBuffer = nullptr; | |
| 147 } | |
| 148 | |
| 149 for (size_t i = 0; i < m_vertexAttribState.size(); ++i) { | |
| 150 VertexAttribState& state = m_vertexAttribState[i]; | |
| 151 if (state.bufferBinding == buffer) { | |
| 152 buffer->onDetached(context()->webContext()); | |
| 153 state.bufferBinding = nullptr; | |
| 154 } | |
| 155 } | |
| 156 } | |
| 157 | |
| 158 void WebGLVertexArrayObjectOES::setVertexAttribDivisor(GLuint index, GLuint divi
sor) | |
| 159 { | |
| 160 VertexAttribState& state = m_vertexAttribState[index]; | |
| 161 state.divisor = divisor; | |
| 162 } | |
| 163 | |
| 164 } | |
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