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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 #include "sky/engine/core/html/canvas/WebGLRenderingContext.h" | |
| 28 | |
| 29 #include "sky/engine/core/frame/LocalFrame.h" | |
| 30 #include "sky/engine/core/frame/Settings.h" | |
| 31 #include "sky/engine/core/html/canvas/ANGLEInstancedArrays.h" | |
| 32 #include "sky/engine/core/html/canvas/EXTBlendMinMax.h" | |
| 33 #include "sky/engine/core/html/canvas/EXTFragDepth.h" | |
| 34 #include "sky/engine/core/html/canvas/EXTShaderTextureLOD.h" | |
| 35 #include "sky/engine/core/html/canvas/EXTTextureFilterAnisotropic.h" | |
| 36 #include "sky/engine/core/html/canvas/OESElementIndexUint.h" | |
| 37 #include "sky/engine/core/html/canvas/OESStandardDerivatives.h" | |
| 38 #include "sky/engine/core/html/canvas/OESTextureFloat.h" | |
| 39 #include "sky/engine/core/html/canvas/OESTextureFloatLinear.h" | |
| 40 #include "sky/engine/core/html/canvas/OESTextureHalfFloat.h" | |
| 41 #include "sky/engine/core/html/canvas/OESTextureHalfFloatLinear.h" | |
| 42 #include "sky/engine/core/html/canvas/OESVertexArrayObject.h" | |
| 43 #include "sky/engine/core/html/canvas/WebGLCompressedTextureATC.h" | |
| 44 #include "sky/engine/core/html/canvas/WebGLCompressedTextureETC1.h" | |
| 45 #include "sky/engine/core/html/canvas/WebGLCompressedTexturePVRTC.h" | |
| 46 #include "sky/engine/core/html/canvas/WebGLCompressedTextureS3TC.h" | |
| 47 #include "sky/engine/core/html/canvas/WebGLContextAttributes.h" | |
| 48 #include "sky/engine/core/html/canvas/WebGLContextEvent.h" | |
| 49 #include "sky/engine/core/html/canvas/WebGLDebugRendererInfo.h" | |
| 50 #include "sky/engine/core/html/canvas/WebGLDebugShaders.h" | |
| 51 #include "sky/engine/core/html/canvas/WebGLDepthTexture.h" | |
| 52 #include "sky/engine/core/html/canvas/WebGLDrawBuffers.h" | |
| 53 #include "sky/engine/core/html/canvas/WebGLLoseContext.h" | |
| 54 #include "sky/engine/core/loader/FrameLoaderClient.h" | |
| 55 #include "sky/engine/core/rendering/RenderBox.h" | |
| 56 #include "sky/engine/platform/CheckedInt.h" | |
| 57 #include "sky/engine/platform/NotImplemented.h" | |
| 58 #include "sky/engine/platform/graphics/gpu/DrawingBuffer.h" | |
| 59 #include "sky/engine/public/platform/Platform.h" | |
| 60 | |
| 61 namespace blink { | |
| 62 | |
| 63 PassOwnPtr<WebGLRenderingContext> WebGLRenderingContext::create(HTMLCanvasElemen
t* canvas, WebGLContextAttributes* attrs) | |
| 64 { | |
| 65 Document& document = canvas->document(); | |
| 66 LocalFrame* frame = document.frame(); | |
| 67 if (!frame) { | |
| 68 canvas->dispatchEvent(WebGLContextEvent::create(EventTypeNames::webglcon
textcreationerror, false, true, "Web page was not allowed to create a WebGL cont
ext.")); | |
| 69 return nullptr; | |
| 70 } | |
| 71 Settings* settings = frame->settings(); | |
| 72 | |
| 73 // TODO(esprehn): This should never be null. | |
| 74 RefPtr<WebGLContextAttributes> defaultAttrs = nullptr; | |
| 75 if (!attrs) { | |
| 76 defaultAttrs = WebGLContextAttributes::create(); | |
| 77 attrs = defaultAttrs.get(); | |
| 78 } | |
| 79 blink::WebGraphicsContext3D::Attributes attributes = attrs->attributes(docum
ent.topDocument().url().string(), settings, 1); | |
| 80 OwnPtr<blink::WebGraphicsContext3D> context = adoptPtr(blink::Platform::curr
ent()->createOffscreenGraphicsContext3D(attributes, 0)); | |
| 81 if (!context) { | |
| 82 canvas->dispatchEvent(WebGLContextEvent::create(EventTypeNames::webglcon
textcreationerror, false, true, "Could not create a WebGL context.")); | |
| 83 return nullptr; | |
| 84 } | |
| 85 | |
| 86 OwnPtr<Extensions3DUtil> extensionsUtil = Extensions3DUtil::create(context.g
et()); | |
| 87 if (!extensionsUtil) | |
| 88 return nullptr; | |
| 89 if (extensionsUtil->supportsExtension("GL_EXT_debug_marker")) | |
| 90 context->pushGroupMarkerEXT("WebGLRenderingContext"); | |
| 91 | |
| 92 OwnPtr<WebGLRenderingContext> renderingContext = adoptPtr(new WebGLRendering
Context(canvas, context.release(), attrs)); | |
| 93 renderingContext->registerContextExtensions(); | |
| 94 renderingContext->suspendIfNeeded(); | |
| 95 | |
| 96 if (!renderingContext->drawingBuffer()) { | |
| 97 canvas->dispatchEvent(WebGLContextEvent::create(EventTypeNames::webglcon
textcreationerror, false, true, "Could not create a WebGL context.")); | |
| 98 return nullptr; | |
| 99 } | |
| 100 | |
| 101 return renderingContext.release(); | |
| 102 } | |
| 103 | |
| 104 WebGLRenderingContext::WebGLRenderingContext(HTMLCanvasElement* passedCanvas, Pa
ssOwnPtr<blink::WebGraphicsContext3D> context, WebGLContextAttributes* requested
Attributes) | |
| 105 : WebGLRenderingContextBase(passedCanvas, context, requestedAttributes) | |
| 106 { | |
| 107 } | |
| 108 | |
| 109 WebGLRenderingContext::~WebGLRenderingContext() | |
| 110 { | |
| 111 } | |
| 112 | |
| 113 void WebGLRenderingContext::registerContextExtensions() | |
| 114 { | |
| 115 // Register extensions. | |
| 116 static const char* const bothPrefixes[] = { "", "WEBKIT_", 0, }; | |
| 117 | |
| 118 registerExtension<ANGLEInstancedArrays>(m_angleInstancedArrays); | |
| 119 registerExtension<EXTBlendMinMax>(m_extBlendMinMax); | |
| 120 registerExtension<EXTFragDepth>(m_extFragDepth); | |
| 121 registerExtension<EXTShaderTextureLOD>(m_extShaderTextureLOD); | |
| 122 registerExtension<EXTTextureFilterAnisotropic>(m_extTextureFilterAnisotropic
, ApprovedExtension, bothPrefixes); | |
| 123 registerExtension<OESElementIndexUint>(m_oesElementIndexUint); | |
| 124 registerExtension<OESStandardDerivatives>(m_oesStandardDerivatives); | |
| 125 registerExtension<OESTextureFloat>(m_oesTextureFloat); | |
| 126 registerExtension<OESTextureFloatLinear>(m_oesTextureFloatLinear); | |
| 127 registerExtension<OESTextureHalfFloat>(m_oesTextureHalfFloat); | |
| 128 registerExtension<OESTextureHalfFloatLinear>(m_oesTextureHalfFloatLinear); | |
| 129 registerExtension<OESVertexArrayObject>(m_oesVertexArrayObject); | |
| 130 registerExtension<WebGLCompressedTextureATC>(m_webglCompressedTextureATC, Ap
provedExtension, bothPrefixes); | |
| 131 registerExtension<WebGLCompressedTextureETC1>(m_webglCompressedTextureETC1); | |
| 132 registerExtension<WebGLCompressedTexturePVRTC>(m_webglCompressedTexturePVRTC
, ApprovedExtension, bothPrefixes); | |
| 133 registerExtension<WebGLCompressedTextureS3TC>(m_webglCompressedTextureS3TC,
ApprovedExtension, bothPrefixes); | |
| 134 registerExtension<WebGLDebugRendererInfo>(m_webglDebugRendererInfo); | |
| 135 registerExtension<WebGLDebugShaders>(m_webglDebugShaders); | |
| 136 registerExtension<WebGLDepthTexture>(m_webglDepthTexture, ApprovedExtension,
bothPrefixes); | |
| 137 registerExtension<WebGLDrawBuffers>(m_webglDrawBuffers); | |
| 138 registerExtension<WebGLLoseContext>(m_webglLoseContext, ApprovedExtension, b
othPrefixes); | |
| 139 } | |
| 140 | |
| 141 } // namespace blink | |
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