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| 1 /* | |
| 2 * Copyright (C) 2009 Apple 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/WebGLProgram.h" | |
| 29 | |
| 30 #include "sky/engine/core/html/canvas/WebGLContextGroup.h" | |
| 31 #include "sky/engine/core/html/canvas/WebGLRenderingContextBase.h" | |
| 32 | |
| 33 namespace blink { | |
| 34 | |
| 35 PassRefPtr<WebGLProgram> WebGLProgram::create(WebGLRenderingContextBase* ctx) | |
| 36 { | |
| 37 return adoptRef(new WebGLProgram(ctx)); | |
| 38 } | |
| 39 | |
| 40 WebGLProgram::WebGLProgram(WebGLRenderingContextBase* ctx) | |
| 41 : WebGLSharedObject(ctx) | |
| 42 , m_linkStatus(false) | |
| 43 , m_linkCount(0) | |
| 44 , m_infoValid(true) | |
| 45 { | |
| 46 setObject(ctx->webContext()->createProgram()); | |
| 47 } | |
| 48 | |
| 49 WebGLProgram::~WebGLProgram() | |
| 50 { | |
| 51 #if ENABLE(OILPAN) | |
| 52 // These heap objects handle detachment on their own. Clear out | |
| 53 // the references to prevent deleteObjectImpl() from trying to do | |
| 54 // same, as we cannot safely access other heap objects from this | |
| 55 // destructor. | |
| 56 m_vertexShader = nullptr; | |
| 57 m_fragmentShader = nullptr; | |
| 58 #endif | |
| 59 // Always call detach here to ensure that platform object deletion | |
| 60 // happens with Oilpan enabled. It keeps the code regular to do it | |
| 61 // with or without Oilpan enabled. | |
| 62 // | |
| 63 // See comment in WebGLBuffer's destructor for additional | |
| 64 // information on why this is done for WebGLSharedObject-derived | |
| 65 // objects. | |
| 66 detachAndDeleteObject(); | |
| 67 } | |
| 68 | |
| 69 void WebGLProgram::deleteObjectImpl(blink::WebGraphicsContext3D* context3d, Plat
form3DObject obj) | |
| 70 { | |
| 71 context3d->deleteProgram(obj); | |
| 72 if (m_vertexShader) { | |
| 73 m_vertexShader->onDetached(context3d); | |
| 74 m_vertexShader = nullptr; | |
| 75 } | |
| 76 if (m_fragmentShader) { | |
| 77 m_fragmentShader->onDetached(context3d); | |
| 78 m_fragmentShader = nullptr; | |
| 79 } | |
| 80 } | |
| 81 | |
| 82 unsigned WebGLProgram::numActiveAttribLocations() | |
| 83 { | |
| 84 cacheInfoIfNeeded(); | |
| 85 return m_activeAttribLocations.size(); | |
| 86 } | |
| 87 | |
| 88 GLint WebGLProgram::getActiveAttribLocation(GLuint index) | |
| 89 { | |
| 90 cacheInfoIfNeeded(); | |
| 91 if (index >= numActiveAttribLocations()) | |
| 92 return -1; | |
| 93 return m_activeAttribLocations[index]; | |
| 94 } | |
| 95 | |
| 96 bool WebGLProgram::isUsingVertexAttrib0() | |
| 97 { | |
| 98 cacheInfoIfNeeded(); | |
| 99 for (unsigned ii = 0; ii < numActiveAttribLocations(); ++ii) { | |
| 100 if (!getActiveAttribLocation(ii)) | |
| 101 return true; | |
| 102 } | |
| 103 return false; | |
| 104 } | |
| 105 | |
| 106 bool WebGLProgram::linkStatus() | |
| 107 { | |
| 108 cacheInfoIfNeeded(); | |
| 109 return m_linkStatus; | |
| 110 } | |
| 111 | |
| 112 void WebGLProgram::increaseLinkCount() | |
| 113 { | |
| 114 ++m_linkCount; | |
| 115 m_infoValid = false; | |
| 116 } | |
| 117 | |
| 118 WebGLShader* WebGLProgram::getAttachedShader(GLenum type) | |
| 119 { | |
| 120 switch (type) { | |
| 121 case GL_VERTEX_SHADER: | |
| 122 return m_vertexShader.get(); | |
| 123 case GL_FRAGMENT_SHADER: | |
| 124 return m_fragmentShader.get(); | |
| 125 default: | |
| 126 return 0; | |
| 127 } | |
| 128 } | |
| 129 | |
| 130 bool WebGLProgram::attachShader(WebGLShader* shader) | |
| 131 { | |
| 132 if (!shader || !shader->object()) | |
| 133 return false; | |
| 134 switch (shader->type()) { | |
| 135 case GL_VERTEX_SHADER: | |
| 136 if (m_vertexShader) | |
| 137 return false; | |
| 138 m_vertexShader = shader; | |
| 139 return true; | |
| 140 case GL_FRAGMENT_SHADER: | |
| 141 if (m_fragmentShader) | |
| 142 return false; | |
| 143 m_fragmentShader = shader; | |
| 144 return true; | |
| 145 default: | |
| 146 return false; | |
| 147 } | |
| 148 } | |
| 149 | |
| 150 bool WebGLProgram::detachShader(WebGLShader* shader) | |
| 151 { | |
| 152 if (!shader || !shader->object()) | |
| 153 return false; | |
| 154 switch (shader->type()) { | |
| 155 case GL_VERTEX_SHADER: | |
| 156 if (m_vertexShader != shader) | |
| 157 return false; | |
| 158 m_vertexShader = nullptr; | |
| 159 return true; | |
| 160 case GL_FRAGMENT_SHADER: | |
| 161 if (m_fragmentShader != shader) | |
| 162 return false; | |
| 163 m_fragmentShader = nullptr; | |
| 164 return true; | |
| 165 default: | |
| 166 return false; | |
| 167 } | |
| 168 } | |
| 169 | |
| 170 void WebGLProgram::cacheActiveAttribLocations(blink::WebGraphicsContext3D* conte
xt3d) | |
| 171 { | |
| 172 m_activeAttribLocations.clear(); | |
| 173 | |
| 174 GLint numAttribs = 0; | |
| 175 context3d->getProgramiv(object(), GL_ACTIVE_ATTRIBUTES, &numAttribs); | |
| 176 m_activeAttribLocations.resize(static_cast<size_t>(numAttribs)); | |
| 177 for (int i = 0; i < numAttribs; ++i) { | |
| 178 blink::WebGraphicsContext3D::ActiveInfo info; | |
| 179 context3d->getActiveAttrib(object(), i, info); | |
| 180 m_activeAttribLocations[i] = context3d->getAttribLocation(object(), info
.name.utf8().data()); | |
| 181 } | |
| 182 } | |
| 183 | |
| 184 void WebGLProgram::cacheInfoIfNeeded() | |
| 185 { | |
| 186 if (m_infoValid) | |
| 187 return; | |
| 188 | |
| 189 if (!object()) | |
| 190 return; | |
| 191 | |
| 192 if (!contextGroup()) | |
| 193 return; | |
| 194 blink::WebGraphicsContext3D* context = contextGroup()->getAWebGraphicsContex
t3D(); | |
| 195 if (!context) | |
| 196 return; | |
| 197 GLint linkStatus = 0; | |
| 198 context->getProgramiv(object(), GL_LINK_STATUS, &linkStatus); | |
| 199 m_linkStatus = linkStatus; | |
| 200 if (m_linkStatus) | |
| 201 cacheActiveAttribLocations(context); | |
| 202 m_infoValid = true; | |
| 203 } | |
| 204 | |
| 205 } | |
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