Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame^] | 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 | #ifndef WebGLRenderingContext_h |
| 27 | #define WebGLRenderingContext_h |
| 28 | |
| 29 | #include "core/dom/ActiveDOMObject.h" |
| 30 | #include "core/html/canvas/CanvasRenderingContext.h" |
| 31 | #include "core/html/canvas/WebGLGetInfo.h" |
| 32 | #include "core/platform/Timer.h" |
| 33 | #include "core/platform/graphics/GraphicsContext3D.h" |
| 34 | #include "core/platform/graphics/ImageBuffer.h" |
| 35 | |
| 36 | #include <wtf/Float32Array.h> |
| 37 | #include <wtf/Int32Array.h> |
| 38 | #include <wtf/OwnArrayPtr.h> |
| 39 | #include <wtf/text/WTFString.h> |
| 40 | #include <wtf/Uint8Array.h> |
| 41 | |
| 42 | namespace WebCore { |
| 43 | |
| 44 | class DrawingBuffer; |
| 45 | class EXTDrawBuffers; |
| 46 | class EXTTextureFilterAnisotropic; |
| 47 | class HTMLImageElement; |
| 48 | class HTMLVideoElement; |
| 49 | class ImageBuffer; |
| 50 | class ImageData; |
| 51 | class IntSize; |
| 52 | class OESStandardDerivatives; |
| 53 | class OESTextureFloat; |
| 54 | class OESTextureHalfFloat; |
| 55 | class OESVertexArrayObject; |
| 56 | class OESElementIndexUint; |
| 57 | class WebGLActiveInfo; |
| 58 | class WebGLBuffer; |
| 59 | class WebGLContextGroup; |
| 60 | class WebGLContextObject; |
| 61 | class WebGLCompressedTextureATC; |
| 62 | class WebGLCompressedTexturePVRTC; |
| 63 | class WebGLCompressedTextureS3TC; |
| 64 | class WebGLContextAttributes; |
| 65 | class WebGLDebugRendererInfo; |
| 66 | class WebGLDebugShaders; |
| 67 | class WebGLDepthTexture; |
| 68 | class WebGLExtension; |
| 69 | class WebGLFramebuffer; |
| 70 | class WebGLLoseContext; |
| 71 | class WebGLObject; |
| 72 | class WebGLProgram; |
| 73 | class WebGLRenderbuffer; |
| 74 | class WebGLShader; |
| 75 | class WebGLSharedObject; |
| 76 | class WebGLShaderPrecisionFormat; |
| 77 | class WebGLTexture; |
| 78 | class WebGLUniformLocation; |
| 79 | class WebGLVertexArrayObjectOES; |
| 80 | |
| 81 | typedef int ExceptionCode; |
| 82 | |
| 83 | class WebGLRenderingContext : public CanvasRenderingContext, public ActiveDOMObject { |
| 84 | public: |
| 85 | static PassOwnPtr<WebGLRenderingContext> create(HTMLCanvasElement*, WebGLContextAttributes*); |
| 86 | virtual ~WebGLRenderingContext(); |
| 87 | |
| 88 | virtual bool is3d() const { return true; } |
| 89 | virtual bool isAccelerated() const { return true; } |
| 90 | |
| 91 | int drawingBufferWidth() const; |
| 92 | int drawingBufferHeight() const; |
| 93 | |
| 94 | void activeTexture(GC3Denum texture, ExceptionCode&); |
| 95 | void attachShader(WebGLProgram*, WebGLShader*, ExceptionCode&); |
| 96 | void bindAttribLocation(WebGLProgram*, GC3Duint index, const String& name, ExceptionCode&); |
| 97 | void bindBuffer(GC3Denum target, WebGLBuffer*, ExceptionCode&); |
| 98 | void bindFramebuffer(GC3Denum target, WebGLFramebuffer*, ExceptionCode&); |
| 99 | void bindRenderbuffer(GC3Denum target, WebGLRenderbuffer*, ExceptionCode&); |
| 100 | void bindTexture(GC3Denum target, WebGLTexture*, ExceptionCode&); |
| 101 | void blendColor(GC3Dfloat red, GC3Dfloat green, GC3Dfloat blue, GC3Dfloat alpha); |
| 102 | void blendEquation(GC3Denum mode); |
| 103 | void blendEquationSeparate(GC3Denum modeRGB, GC3Denum modeAlpha); |
| 104 | void blendFunc(GC3Denum sfactor, GC3Denum dfactor); |
| 105 | void blendFuncSeparate(GC3Denum srcRGB, GC3Denum dstRGB, GC3Denum srcAlpha, GC3Denum dstAlpha); |
| 106 | |
| 107 | void bufferData(GC3Denum target, long long size, GC3Denum usage, ExceptionCode&); |
| 108 | void bufferData(GC3Denum target, ArrayBuffer* data, GC3Denum usage, ExceptionCode&); |
| 109 | void bufferData(GC3Denum target, ArrayBufferView* data, GC3Denum usage, ExceptionCode&); |
| 110 | void bufferSubData(GC3Denum target, long long offset, ArrayBuffer* data, ExceptionCode&); |
| 111 | void bufferSubData(GC3Denum target, long long offset, ArrayBufferView* data, ExceptionCode&); |
| 112 | |
| 113 | GC3Denum checkFramebufferStatus(GC3Denum target); |
| 114 | void clear(GC3Dbitfield mask); |
| 115 | void clearColor(GC3Dfloat red, GC3Dfloat green, GC3Dfloat blue, GC3Dfloat alpha); |
| 116 | void clearDepth(GC3Dfloat); |
| 117 | void clearStencil(GC3Dint); |
| 118 | void colorMask(GC3Dboolean red, GC3Dboolean green, GC3Dboolean blue, GC3Dboolean alpha); |
| 119 | void compileShader(WebGLShader*, ExceptionCode&); |
| 120 | |
| 121 | void compressedTexImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Dsizei width, |
| 122 | GC3Dsizei height, GC3Dint border, ArrayBufferView* data); |
| 123 | void compressedTexSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, |
| 124 | GC3Dsizei width, GC3Dsizei height, GC3Denum format, ArrayBufferView* data); |
| 125 | |
| 126 | void copyTexImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height, GC3Dint border); |
| 127 | void copyTexSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height); |
| 128 | |
| 129 | PassRefPtr<WebGLBuffer> createBuffer(); |
| 130 | PassRefPtr<WebGLFramebuffer> createFramebuffer(); |
| 131 | PassRefPtr<WebGLProgram> createProgram(); |
| 132 | PassRefPtr<WebGLRenderbuffer> createRenderbuffer(); |
| 133 | PassRefPtr<WebGLShader> createShader(GC3Denum type, ExceptionCode&); |
| 134 | PassRefPtr<WebGLTexture> createTexture(); |
| 135 | |
| 136 | void cullFace(GC3Denum mode); |
| 137 | |
| 138 | void deleteBuffer(WebGLBuffer*); |
| 139 | void deleteFramebuffer(WebGLFramebuffer*); |
| 140 | void deleteProgram(WebGLProgram*); |
| 141 | void deleteRenderbuffer(WebGLRenderbuffer*); |
| 142 | void deleteShader(WebGLShader*); |
| 143 | void deleteTexture(WebGLTexture*); |
| 144 | |
| 145 | void depthFunc(GC3Denum); |
| 146 | void depthMask(GC3Dboolean); |
| 147 | void depthRange(GC3Dfloat zNear, GC3Dfloat zFar); |
| 148 | void detachShader(WebGLProgram*, WebGLShader*, ExceptionCode&); |
| 149 | void disable(GC3Denum cap); |
| 150 | void disableVertexAttribArray(GC3Duint index, ExceptionCode&); |
| 151 | void drawArrays(GC3Denum mode, GC3Dint first, GC3Dsizei count, ExceptionCode&); |
| 152 | void drawElements(GC3Denum mode, GC3Dsizei count, GC3Denum type, long long offset, ExceptionCode&); |
| 153 | |
| 154 | void enable(GC3Denum cap); |
| 155 | void enableVertexAttribArray(GC3Duint index, ExceptionCode&); |
| 156 | void finish(); |
| 157 | void flush(); |
| 158 | void framebufferRenderbuffer(GC3Denum target, GC3Denum attachment, GC3Denum renderbuffertarget, WebGLRenderbuffer*, ExceptionCode&); |
| 159 | void framebufferTexture2D(GC3Denum target, GC3Denum attachment, GC3Denum textarget, WebGLTexture*, GC3Dint level, ExceptionCode&); |
| 160 | void frontFace(GC3Denum mode); |
| 161 | void generateMipmap(GC3Denum target); |
| 162 | |
| 163 | PassRefPtr<WebGLActiveInfo> getActiveAttrib(WebGLProgram*, GC3Duint index, ExceptionCode&); |
| 164 | PassRefPtr<WebGLActiveInfo> getActiveUniform(WebGLProgram*, GC3Duint index, ExceptionCode&); |
| 165 | bool getAttachedShaders(WebGLProgram*, Vector<RefPtr<WebGLShader> >&, ExceptionCode&); |
| 166 | GC3Dint getAttribLocation(WebGLProgram*, const String& name); |
| 167 | WebGLGetInfo getBufferParameter(GC3Denum target, GC3Denum pname, ExceptionCode&); |
| 168 | PassRefPtr<WebGLContextAttributes> getContextAttributes(); |
| 169 | GC3Denum getError(); |
| 170 | WebGLExtension* getExtension(const String& name); |
| 171 | WebGLGetInfo getFramebufferAttachmentParameter(GC3Denum target, GC3Denum attachment, GC3Denum pname, ExceptionCode&); |
| 172 | WebGLGetInfo getParameter(GC3Denum pname, ExceptionCode&); |
| 173 | WebGLGetInfo getProgramParameter(WebGLProgram*, GC3Denum pname, ExceptionCode&); |
| 174 | String getProgramInfoLog(WebGLProgram*, ExceptionCode&); |
| 175 | WebGLGetInfo getRenderbufferParameter(GC3Denum target, GC3Denum pname, ExceptionCode&); |
| 176 | WebGLGetInfo getShaderParameter(WebGLShader*, GC3Denum pname, ExceptionCode&); |
| 177 | String getShaderInfoLog(WebGLShader*, ExceptionCode&); |
| 178 | PassRefPtr<WebGLShaderPrecisionFormat> getShaderPrecisionFormat(GC3Denum shaderType, GC3Denum precisionType, ExceptionCode&); |
| 179 | String getShaderSource(WebGLShader*, ExceptionCode&); |
| 180 | Vector<String> getSupportedExtensions(); |
| 181 | WebGLGetInfo getTexParameter(GC3Denum target, GC3Denum pname, ExceptionCode&); |
| 182 | WebGLGetInfo getUniform(WebGLProgram*, const WebGLUniformLocation*, ExceptionCode&); |
| 183 | PassRefPtr<WebGLUniformLocation> getUniformLocation(WebGLProgram*, const String&, ExceptionCode&); |
| 184 | WebGLGetInfo getVertexAttrib(GC3Duint index, GC3Denum pname, ExceptionCode&); |
| 185 | long long getVertexAttribOffset(GC3Duint index, GC3Denum pname); |
| 186 | |
| 187 | void hint(GC3Denum target, GC3Denum mode); |
| 188 | GC3Dboolean isBuffer(WebGLBuffer*); |
| 189 | bool isContextLost(); |
| 190 | GC3Dboolean isEnabled(GC3Denum cap); |
| 191 | GC3Dboolean isFramebuffer(WebGLFramebuffer*); |
| 192 | GC3Dboolean isProgram(WebGLProgram*); |
| 193 | GC3Dboolean isRenderbuffer(WebGLRenderbuffer*); |
| 194 | GC3Dboolean isShader(WebGLShader*); |
| 195 | GC3Dboolean isTexture(WebGLTexture*); |
| 196 | |
| 197 | void lineWidth(GC3Dfloat); |
| 198 | void linkProgram(WebGLProgram*, ExceptionCode&); |
| 199 | void pixelStorei(GC3Denum pname, GC3Dint param); |
| 200 | void polygonOffset(GC3Dfloat factor, GC3Dfloat units); |
| 201 | void readPixels(GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height, GC3Denum format, GC3Denum type, ArrayBufferView* pixels, ExceptionCode&); |
| 202 | void renderbufferStorage(GC3Denum target, GC3Denum internalformat, GC3Dsizei width, GC3Dsizei height); |
| 203 | void sampleCoverage(GC3Dfloat value, GC3Dboolean invert); |
| 204 | void scissor(GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height); |
| 205 | void shaderSource(WebGLShader*, const String&, ExceptionCode&); |
| 206 | void stencilFunc(GC3Denum func, GC3Dint ref, GC3Duint mask); |
| 207 | void stencilFuncSeparate(GC3Denum face, GC3Denum func, GC3Dint ref, GC3Duint mask); |
| 208 | void stencilMask(GC3Duint); |
| 209 | void stencilMaskSeparate(GC3Denum face, GC3Duint mask); |
| 210 | void stencilOp(GC3Denum fail, GC3Denum zfail, GC3Denum zpass); |
| 211 | void stencilOpSeparate(GC3Denum face, GC3Denum fail, GC3Denum zfail, GC3Denum zpass); |
| 212 | |
| 213 | void texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, |
| 214 | GC3Dsizei width, GC3Dsizei height, GC3Dint border, |
| 215 | GC3Denum format, GC3Denum type, ArrayBufferView*, ExceptionCode&); |
| 216 | void texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, |
| 217 | GC3Denum format, GC3Denum type, ImageData*, ExceptionCode&); |
| 218 | void texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, |
| 219 | GC3Denum format, GC3Denum type, HTMLImageElement*, ExceptionCode&); |
| 220 | void texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, |
| 221 | GC3Denum format, GC3Denum type, HTMLCanvasElement*, ExceptionCode&); |
| 222 | void texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, |
| 223 | GC3Denum format, GC3Denum type, HTMLVideoElement*, ExceptionCode&); |
| 224 | |
| 225 | void texParameterf(GC3Denum target, GC3Denum pname, GC3Dfloat param); |
| 226 | void texParameteri(GC3Denum target, GC3Denum pname, GC3Dint param); |
| 227 | |
| 228 | void texSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, |
| 229 | GC3Dsizei width, GC3Dsizei height, |
| 230 | GC3Denum format, GC3Denum type, ArrayBufferView*, ExceptionCode&); |
| 231 | void texSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, |
| 232 | GC3Denum format, GC3Denum type, ImageData*, ExceptionCode&); |
| 233 | void texSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, |
| 234 | GC3Denum format, GC3Denum type, HTMLImageElement*, ExceptionCode&); |
| 235 | void texSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, |
| 236 | GC3Denum format, GC3Denum type, HTMLCanvasElement*, ExceptionCode&); |
| 237 | void texSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, |
| 238 | GC3Denum format, GC3Denum type, HTMLVideoElement*, ExceptionCode&); |
| 239 | |
| 240 | void uniform1f(const WebGLUniformLocation* location, GC3Dfloat x, ExceptionCode&); |
| 241 | void uniform1fv(const WebGLUniformLocation* location, Float32Array* v, ExceptionCode&); |
| 242 | void uniform1fv(const WebGLUniformLocation* location, GC3Dfloat* v, GC3Dsizei size, ExceptionCode&); |
| 243 | void uniform1i(const WebGLUniformLocation* location, GC3Dint x, ExceptionCode&); |
| 244 | void uniform1iv(const WebGLUniformLocation* location, Int32Array* v, ExceptionCode&); |
| 245 | void uniform1iv(const WebGLUniformLocation* location, GC3Dint* v, GC3Dsizei size, ExceptionCode&); |
| 246 | void uniform2f(const WebGLUniformLocation* location, GC3Dfloat x, GC3Dfloat y, ExceptionCode&); |
| 247 | void uniform2fv(const WebGLUniformLocation* location, Float32Array* v, ExceptionCode&); |
| 248 | void uniform2fv(const WebGLUniformLocation* location, GC3Dfloat* v, GC3Dsizei size, ExceptionCode&); |
| 249 | void uniform2i(const WebGLUniformLocation* location, GC3Dint x, GC3Dint y, ExceptionCode&); |
| 250 | void uniform2iv(const WebGLUniformLocation* location, Int32Array* v, ExceptionCode&); |
| 251 | void uniform2iv(const WebGLUniformLocation* location, GC3Dint* v, GC3Dsizei size, ExceptionCode&); |
| 252 | void uniform3f(const WebGLUniformLocation* location, GC3Dfloat x, GC3Dfloat y, GC3Dfloat z, ExceptionCode&); |
| 253 | void uniform3fv(const WebGLUniformLocation* location, Float32Array* v, ExceptionCode&); |
| 254 | void uniform3fv(const WebGLUniformLocation* location, GC3Dfloat* v, GC3Dsizei size, ExceptionCode&); |
| 255 | void uniform3i(const WebGLUniformLocation* location, GC3Dint x, GC3Dint y, GC3Dint z, ExceptionCode&); |
| 256 | void uniform3iv(const WebGLUniformLocation* location, Int32Array* v, ExceptionCode&); |
| 257 | void uniform3iv(const WebGLUniformLocation* location, GC3Dint* v, GC3Dsizei size, ExceptionCode&); |
| 258 | void uniform4f(const WebGLUniformLocation* location, GC3Dfloat x, GC3Dfloat y, GC3Dfloat z, GC3Dfloat w, ExceptionCode&); |
| 259 | void uniform4fv(const WebGLUniformLocation* location, Float32Array* v, ExceptionCode&); |
| 260 | void uniform4fv(const WebGLUniformLocation* location, GC3Dfloat* v, GC3Dsizei size, ExceptionCode&); |
| 261 | void uniform4i(const WebGLUniformLocation* location, GC3Dint x, GC3Dint y, GC3Dint z, GC3Dint w, ExceptionCode&); |
| 262 | void uniform4iv(const WebGLUniformLocation* location, Int32Array* v, ExceptionCode&); |
| 263 | void uniform4iv(const WebGLUniformLocation* location, GC3Dint* v, GC3Dsizei size, ExceptionCode&); |
| 264 | void uniformMatrix2fv(const WebGLUniformLocation* location, GC3Dboolean transpose, Float32Array* value, ExceptionCode&); |
| 265 | void uniformMatrix2fv(const WebGLUniformLocation* location, GC3Dboolean transpose, GC3Dfloat* value, GC3Dsizei size, ExceptionCode&); |
| 266 | void uniformMatrix3fv(const WebGLUniformLocation* location, GC3Dboolean transpose, Float32Array* value, ExceptionCode&); |
| 267 | void uniformMatrix3fv(const WebGLUniformLocation* location, GC3Dboolean transpose, GC3Dfloat* value, GC3Dsizei size, ExceptionCode&); |
| 268 | void uniformMatrix4fv(const WebGLUniformLocation* location, GC3Dboolean transpose, Float32Array* value, ExceptionCode&); |
| 269 | void uniformMatrix4fv(const WebGLUniformLocation* location, GC3Dboolean transpose, GC3Dfloat* value, GC3Dsizei size, ExceptionCode&); |
| 270 | |
| 271 | void useProgram(WebGLProgram*, ExceptionCode&); |
| 272 | void validateProgram(WebGLProgram*, ExceptionCode&); |
| 273 | |
| 274 | void vertexAttrib1f(GC3Duint index, GC3Dfloat x); |
| 275 | void vertexAttrib1fv(GC3Duint index, Float32Array* values); |
| 276 | void vertexAttrib1fv(GC3Duint index, GC3Dfloat* values, GC3Dsizei size); |
| 277 | void vertexAttrib2f(GC3Duint index, GC3Dfloat x, GC3Dfloat y); |
| 278 | void vertexAttrib2fv(GC3Duint index, Float32Array* values); |
| 279 | void vertexAttrib2fv(GC3Duint index, GC3Dfloat* values, GC3Dsizei size); |
| 280 | void vertexAttrib3f(GC3Duint index, GC3Dfloat x, GC3Dfloat y, GC3Dfloat z); |
| 281 | void vertexAttrib3fv(GC3Duint index, Float32Array* values); |
| 282 | void vertexAttrib3fv(GC3Duint index, GC3Dfloat* values, GC3Dsizei size); |
| 283 | void vertexAttrib4f(GC3Duint index, GC3Dfloat x, GC3Dfloat y, GC3Dfloat z, GC3Dfloat w); |
| 284 | void vertexAttrib4fv(GC3Duint index, Float32Array* values); |
| 285 | void vertexAttrib4fv(GC3Duint index, GC3Dfloat* values, GC3Dsizei size); |
| 286 | void vertexAttribPointer(GC3Duint index, GC3Dint size, GC3Denum type, GC3Dboolean normalized, |
| 287 | GC3Dsizei stride, long long offset, ExceptionCode&); |
| 288 | |
| 289 | void viewport(GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height); |
| 290 | |
| 291 | // WEBKIT_lose_context support |
| 292 | enum LostContextMode { |
| 293 | // Lost context occurred at the graphics system level. |
| 294 | RealLostContext, |
| 295 | |
| 296 | // Lost context provoked by WEBKIT_lose_context. |
| 297 | SyntheticLostContext |
| 298 | }; |
| 299 | void forceLostContext(LostContextMode); |
| 300 | void forceRestoreContext(); |
| 301 | void loseContextImpl(LostContextMode); |
| 302 | |
| 303 | GraphicsContext3D* graphicsContext3D() const { return m_context.get(); } |
| 304 | WebGLContextGroup* contextGroup() const { return m_contextGroup.get(); } |
| 305 | virtual PlatformLayer* platformLayer() const; |
| 306 | |
| 307 | void reshape(int width, int height); |
| 308 | |
| 309 | void markLayerComposited(); |
| 310 | virtual void paintRenderingResultsToCanvas(); |
| 311 | virtual PassRefPtr<ImageData> paintRenderingResultsToImageData(); |
| 312 | |
| 313 | void removeSharedObject(WebGLSharedObject*); |
| 314 | void removeContextObject(WebGLContextObject*); |
| 315 | |
| 316 | unsigned getMaxVertexAttribs() const { return m_maxVertexAttribs; } |
| 317 | |
| 318 | // ActiveDOMObject notifications |
| 319 | virtual bool hasPendingActivity() const; |
| 320 | virtual void stop(); |
| 321 | |
| 322 | private: |
| 323 | friend class EXTDrawBuffers; |
| 324 | friend class WebGLFramebuffer; |
| 325 | friend class WebGLObject; |
| 326 | friend class OESVertexArrayObject; |
| 327 | friend class WebGLDebugShaders; |
| 328 | friend class WebGLCompressedTextureATC; |
| 329 | friend class WebGLCompressedTexturePVRTC; |
| 330 | friend class WebGLCompressedTextureS3TC; |
| 331 | friend class WebGLRenderingContextErrorMessageCallback; |
| 332 | friend class WebGLVertexArrayObjectOES; |
| 333 | |
| 334 | WebGLRenderingContext(HTMLCanvasElement*, PassRefPtr<GraphicsContext3D>, GraphicsContext3D::Attributes); |
| 335 | void initializeNewContext(); |
| 336 | void setupFlags(); |
| 337 | |
| 338 | void addSharedObject(WebGLSharedObject*); |
| 339 | void addContextObject(WebGLContextObject*); |
| 340 | void detachAndRemoveAllObjects(); |
| 341 | |
| 342 | void destroyGraphicsContext3D(); |
| 343 | void markContextChanged(); |
| 344 | |
| 345 | // Query if the GL implementation is NPOT strict. |
| 346 | bool isGLES2NPOTStrict() { return m_isGLES2NPOTStrict; } |
| 347 | // Query if depth_stencil buffer is supported. |
| 348 | bool isDepthStencilSupported() { return m_isDepthStencilSupported; } |
| 349 | |
| 350 | // Helper to return the size in bytes of OpenGL data types |
| 351 | // like GL_FLOAT, GL_INT, etc. |
| 352 | unsigned int sizeInBytes(GC3Denum type); |
| 353 | |
| 354 | // Check if each enabled vertex attribute is bound to a buffer. |
| 355 | bool validateRenderingState(); |
| 356 | |
| 357 | bool validateWebGLObject(const char*, WebGLObject*); |
| 358 | |
| 359 | // Adds a compressed texture format. |
| 360 | void addCompressedTextureFormat(GC3Denum); |
| 361 | |
| 362 | // Template to help getSupportedExtensions |
| 363 | template<typename T> |
| 364 | void appendIfSupported(Vector<String>& strings, bool prefixed) |
| 365 | { |
| 366 | if (T::supported(this)) |
| 367 | strings.append(String(prefixed ? "WEBKIT_" : "") + T::getExtensionName()); |
| 368 | } |
| 369 | |
| 370 | bool matchesNameWithPrefixes(const String& name, const String& baseName, const char** prefixes); |
| 371 | |
| 372 | // Templates to help getExtension |
| 373 | template<typename T> |
| 374 | bool getExtensionIfMatch(const String& name, OwnPtr<T>& extensionPtr, const char** prefixes, WebGLExtension*& extension) |
| 375 | { |
| 376 | if (matchesNameWithPrefixes(name, T::getExtensionName(), prefixes) && (extensionPtr || T::supported(this))) { |
| 377 | if (!extensionPtr) { |
| 378 | extensionPtr = T::create(this); |
| 379 | } |
| 380 | extension = extensionPtr.get(); |
| 381 | return true; |
| 382 | } |
| 383 | return false; |
| 384 | } |
| 385 | |
| 386 | PassRefPtr<Image> videoFrameToImage(HTMLVideoElement*, BackingStoreCopy, ExceptionCode&); |
| 387 | |
| 388 | RefPtr<GraphicsContext3D> m_context; |
| 389 | RefPtr<WebGLContextGroup> m_contextGroup; |
| 390 | |
| 391 | // Structure for rendering to a DrawingBuffer, instead of directly |
| 392 | // to the back-buffer of m_context. |
| 393 | RefPtr<DrawingBuffer> m_drawingBuffer; |
| 394 | |
| 395 | // Dispatches a context lost event once it is determined that one is needed. |
| 396 | // This is used both for synthetic and real context losses. For real ones, it's |
| 397 | // likely that there's no JavaScript on the stack, but that might be dependent |
| 398 | // on how exactly the platform discovers that the context was lost. For better |
| 399 | // portability we always defer the dispatch of the event. |
| 400 | Timer<WebGLRenderingContext> m_dispatchContextLostEventTimer; |
| 401 | bool m_restoreAllowed; |
| 402 | Timer<WebGLRenderingContext> m_restoreTimer; |
| 403 | |
| 404 | bool m_needsUpdate; |
| 405 | bool m_markedCanvasDirty; |
| 406 | HashSet<WebGLContextObject*> m_contextObjects; |
| 407 | |
| 408 | // List of bound VBO's. Used to maintain info about sizes for ARRAY_BUFFER and stored values for ELEMENT_ARRAY_BUFFER |
| 409 | RefPtr<WebGLBuffer> m_boundArrayBuffer; |
| 410 | |
| 411 | RefPtr<WebGLVertexArrayObjectOES> m_defaultVertexArrayObject; |
| 412 | RefPtr<WebGLVertexArrayObjectOES> m_boundVertexArrayObject; |
| 413 | void setBoundVertexArrayObject(PassRefPtr<WebGLVertexArrayObjectOES> arrayObject) |
| 414 | { |
| 415 | if (arrayObject) |
| 416 | m_boundVertexArrayObject = arrayObject; |
| 417 | else |
| 418 | m_boundVertexArrayObject = m_defaultVertexArrayObject; |
| 419 | } |
| 420 | |
| 421 | class VertexAttribValue { |
| 422 | public: |
| 423 | VertexAttribValue() |
| 424 | { |
| 425 | initValue(); |
| 426 | } |
| 427 | |
| 428 | void initValue() |
| 429 | { |
| 430 | value[0] = 0.0f; |
| 431 | value[1] = 0.0f; |
| 432 | value[2] = 0.0f; |
| 433 | value[3] = 1.0f; |
| 434 | } |
| 435 | |
| 436 | GC3Dfloat value[4]; |
| 437 | }; |
| 438 | Vector<VertexAttribValue> m_vertexAttribValue; |
| 439 | unsigned m_maxVertexAttribs; |
| 440 | RefPtr<WebGLBuffer> m_vertexAttrib0Buffer; |
| 441 | long m_vertexAttrib0BufferSize; |
| 442 | GC3Dfloat m_vertexAttrib0BufferValue[4]; |
| 443 | bool m_forceAttrib0BufferRefill; |
| 444 | bool m_vertexAttrib0UsedBefore; |
| 445 | |
| 446 | RefPtr<WebGLProgram> m_currentProgram; |
| 447 | RefPtr<WebGLFramebuffer> m_framebufferBinding; |
| 448 | RefPtr<WebGLRenderbuffer> m_renderbufferBinding; |
| 449 | class TextureUnitState { |
| 450 | public: |
| 451 | RefPtr<WebGLTexture> m_texture2DBinding; |
| 452 | RefPtr<WebGLTexture> m_textureCubeMapBinding; |
| 453 | }; |
| 454 | Vector<TextureUnitState> m_textureUnits; |
| 455 | unsigned long m_activeTextureUnit; |
| 456 | |
| 457 | RefPtr<WebGLTexture> m_blackTexture2D; |
| 458 | RefPtr<WebGLTexture> m_blackTextureCubeMap; |
| 459 | |
| 460 | Vector<GC3Denum> m_compressedTextureFormats; |
| 461 | |
| 462 | // Fixed-size cache of reusable image buffers for video texImage2D calls. |
| 463 | class LRUImageBufferCache { |
| 464 | public: |
| 465 | LRUImageBufferCache(int capacity); |
| 466 | // The pointer returned is owned by the image buffer map. |
| 467 | ImageBuffer* imageBuffer(const IntSize& size); |
| 468 | private: |
| 469 | void bubbleToFront(int idx); |
| 470 | OwnArrayPtr<OwnPtr<ImageBuffer> > m_buffers; |
| 471 | int m_capacity; |
| 472 | }; |
| 473 | LRUImageBufferCache m_videoCache; |
| 474 | |
| 475 | GC3Dint m_maxTextureSize; |
| 476 | GC3Dint m_maxCubeMapTextureSize; |
| 477 | GC3Dint m_maxRenderbufferSize; |
| 478 | GC3Dint m_maxViewportDims[2]; |
| 479 | GC3Dint m_maxTextureLevel; |
| 480 | GC3Dint m_maxCubeMapTextureLevel; |
| 481 | |
| 482 | GC3Dint m_maxDrawBuffers; |
| 483 | GC3Dint m_maxColorAttachments; |
| 484 | GC3Denum m_backDrawBuffer; |
| 485 | bool m_drawBuffersWebGLRequirementsChecked; |
| 486 | bool m_drawBuffersSupported; |
| 487 | |
| 488 | GC3Dint m_packAlignment; |
| 489 | GC3Dint m_unpackAlignment; |
| 490 | bool m_unpackFlipY; |
| 491 | bool m_unpackPremultiplyAlpha; |
| 492 | GC3Denum m_unpackColorspaceConversion; |
| 493 | bool m_contextLost; |
| 494 | LostContextMode m_contextLostMode; |
| 495 | GraphicsContext3D::Attributes m_attributes; |
| 496 | |
| 497 | bool m_layerCleared; |
| 498 | GC3Dfloat m_clearColor[4]; |
| 499 | bool m_scissorEnabled; |
| 500 | GC3Dfloat m_clearDepth; |
| 501 | GC3Dint m_clearStencil; |
| 502 | GC3Dboolean m_colorMask[4]; |
| 503 | GC3Dboolean m_depthMask; |
| 504 | |
| 505 | bool m_stencilEnabled; |
| 506 | GC3Duint m_stencilMask, m_stencilMaskBack; |
| 507 | GC3Dint m_stencilFuncRef, m_stencilFuncRefBack; // Note that these are the user specified values, not the internal clamped value. |
| 508 | GC3Duint m_stencilFuncMask, m_stencilFuncMaskBack; |
| 509 | |
| 510 | bool m_isGLES2NPOTStrict; |
| 511 | bool m_isDepthStencilSupported; |
| 512 | bool m_isRobustnessEXTSupported; |
| 513 | |
| 514 | bool m_synthesizedErrorsToConsole; |
| 515 | int m_numGLErrorsToConsoleAllowed; |
| 516 | |
| 517 | // Enabled extension objects. |
| 518 | OwnPtr<EXTDrawBuffers> m_extDrawBuffers; |
| 519 | OwnPtr<EXTTextureFilterAnisotropic> m_extTextureFilterAnisotropic; |
| 520 | OwnPtr<OESTextureFloat> m_oesTextureFloat; |
| 521 | OwnPtr<OESTextureHalfFloat> m_oesTextureHalfFloat; |
| 522 | OwnPtr<OESStandardDerivatives> m_oesStandardDerivatives; |
| 523 | OwnPtr<OESVertexArrayObject> m_oesVertexArrayObject; |
| 524 | OwnPtr<OESElementIndexUint> m_oesElementIndexUint; |
| 525 | OwnPtr<WebGLLoseContext> m_webglLoseContext; |
| 526 | OwnPtr<WebGLDebugRendererInfo> m_webglDebugRendererInfo; |
| 527 | OwnPtr<WebGLDebugShaders> m_webglDebugShaders; |
| 528 | OwnPtr<WebGLCompressedTextureATC> m_webglCompressedTextureATC; |
| 529 | OwnPtr<WebGLCompressedTexturePVRTC> m_webglCompressedTexturePVRTC; |
| 530 | OwnPtr<WebGLCompressedTextureS3TC> m_webglCompressedTextureS3TC; |
| 531 | OwnPtr<WebGLDepthTexture> m_webglDepthTexture; |
| 532 | |
| 533 | // Errors raised by synthesizeGLError() while the context is lost. |
| 534 | Vector<GC3Denum> lost_context_errors_; |
| 535 | |
| 536 | // Helpers for getParameter and others |
| 537 | WebGLGetInfo getBooleanParameter(GC3Denum); |
| 538 | WebGLGetInfo getBooleanArrayParameter(GC3Denum); |
| 539 | WebGLGetInfo getFloatParameter(GC3Denum); |
| 540 | WebGLGetInfo getIntParameter(GC3Denum); |
| 541 | WebGLGetInfo getUnsignedIntParameter(GC3Denum); |
| 542 | WebGLGetInfo getWebGLFloatArrayParameter(GC3Denum); |
| 543 | WebGLGetInfo getWebGLIntArrayParameter(GC3Denum); |
| 544 | |
| 545 | // Clear the backbuffer if it was composited since the last operation. |
| 546 | // clearMask is set to the bitfield of any clear that would happen anyway at this time |
| 547 | // and the function returns true if that clear is now unnecessary. |
| 548 | bool clearIfComposited(GC3Dbitfield clearMask = 0); |
| 549 | |
| 550 | // Helper to restore state that clearing the framebuffer may destroy. |
| 551 | void restoreStateAfterClear(); |
| 552 | |
| 553 | void texImage2DBase(GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Dsizei width, GC3Dsizei height, GC3Dint border, GC3Denum format, GC3Denum type, const void* pixels, ExceptionCode&); |
| 554 | void texImage2DImpl(GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Denum format, GC3Denum type, Image*, GraphicsContext3D::ImageHtmlDomSource, bool flipY, bool premultiplyAlpha, ExceptionCode&); |
| 555 | void texSubImage2DBase(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, GC3Dsizei width, GC3Dsizei height, GC3Denum format, GC3Denum type, const void* pixels, ExceptionCode&); |
| 556 | void texSubImage2DImpl(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, GC3Denum format, GC3Denum type, Image*, GraphicsContext3D::ImageHtmlDomSource, bool flipY, bool premultiplyAlpha, ExceptionCode&); |
| 557 | |
| 558 | void handleNPOTTextures(const char*, bool); |
| 559 | |
| 560 | void createFallbackBlackTextures1x1(); |
| 561 | |
| 562 | // Helper function for copyTex{Sub}Image, check whether the internalformat |
| 563 | // and the color buffer format of the current bound framebuffer combination |
| 564 | // is valid. |
| 565 | bool isTexInternalFormatColorBufferCombinationValid(GC3Denum texInternalFormat, |
| 566 | GC3Denum colorBufferFormat); |
| 567 | |
| 568 | // Helper function to get the bound framebuffer's color buffer format. |
| 569 | GC3Denum getBoundFramebufferColorFormat(); |
| 570 | |
| 571 | // Helper function to get the bound framebuffer's width. |
| 572 | int getBoundFramebufferWidth(); |
| 573 | |
| 574 | // Helper function to get the bound framebuffer's height. |
| 575 | int getBoundFramebufferHeight(); |
| 576 | |
| 577 | // Helper function to verify limits on the length of uniform and attribute locations. |
| 578 | bool validateLocationLength(const char* functionName, const String&); |
| 579 | |
| 580 | // Helper function to check if size is non-negative. |
| 581 | // Generate GL error and return false for negative inputs; otherwise, return true. |
| 582 | bool validateSize(const char* functionName, GC3Dint x, GC3Dint y); |
| 583 | |
| 584 | // Helper function to check if all characters in the string belong to the |
| 585 | // ASCII subset as defined in GLSL ES 1.0 spec section 3.1. |
| 586 | bool validateString(const char* functionName, const String&); |
| 587 | |
| 588 | // Helper function to check target and texture bound to the target. |
| 589 | // Generate GL errors and return 0 if target is invalid or texture bound is |
| 590 | // null. Otherwise, return the texture bound to the target. |
| 591 | WebGLTexture* validateTextureBinding(const char* functionName, GC3Denum target, bool useSixEnumsForCubeMap); |
| 592 | |
| 593 | // Helper function to check input format/type for functions {copy}Tex{Sub}Image. |
| 594 | // Generates GL error and returns false if parameters are invalid. |
| 595 | bool validateTexFuncFormatAndType(const char* functionName, GC3Denum format, GC3Denum type, GC3Dint level); |
| 596 | |
| 597 | // Helper function to check input level for functions {copy}Tex{Sub}Image. |
| 598 | // Generates GL error and returns false if level is invalid. |
| 599 | bool validateTexFuncLevel(const char* functionName, GC3Denum target, GC3Dint level); |
| 600 | |
| 601 | enum TexFuncValidationFunctionType { |
| 602 | NotTexSubImage2D, |
| 603 | TexSubImage2D, |
| 604 | }; |
| 605 | |
| 606 | enum TexFuncValidationSourceType { |
| 607 | SourceArrayBufferView, |
| 608 | SourceImageData, |
| 609 | SourceHTMLImageElement, |
| 610 | SourceHTMLCanvasElement, |
| 611 | SourceHTMLVideoElement, |
| 612 | }; |
| 613 | |
| 614 | // Helper function for tex{Sub}Image2D to check if the input format/type/level/target/width/height/border/xoffset/yoffset are valid. |
| 615 | // Otherwise, it would return quickly without doing other work. |
| 616 | bool validateTexFunc(const char* functionName, TexFuncValidationFunctionType, TexFuncValidationSourceType, GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Dsizei width, |
| 617 | GC3Dsizei height, GC3Dint border, GC3Denum format, GC3Denum type, GC3Dint xoffset, GC3Dint yoffset); |
| 618 | |
| 619 | // Helper function to check input parameters for functions {copy}Tex{Sub}Image. |
| 620 | // Generates GL error and returns false if parameters are invalid. |
| 621 | bool validateTexFuncParameters(const char* functionName, |
| 622 | TexFuncValidationFunctionType, |
| 623 | GC3Denum target, GC3Dint level, |
| 624 | GC3Denum internalformat, |
| 625 | GC3Dsizei width, GC3Dsizei height, GC3Dint border, |
| 626 | GC3Denum format, GC3Denum type); |
| 627 | |
| 628 | enum NullDisposition { |
| 629 | NullAllowed, |
| 630 | NullNotAllowed |
| 631 | }; |
| 632 | |
| 633 | // Helper function to validate that the given ArrayBufferView |
| 634 | // is of the correct type and contains enough data for the texImage call. |
| 635 | // Generates GL error and returns false if parameters are invalid. |
| 636 | bool validateTexFuncData(const char* functionName, GC3Dint level, |
| 637 | GC3Dsizei width, GC3Dsizei height, |
| 638 | GC3Denum format, GC3Denum type, |
| 639 | ArrayBufferView* pixels, |
| 640 | NullDisposition); |
| 641 | |
| 642 | // Helper function to validate a given texture format is settable as in |
| 643 | // you can supply data to texImage2D, or call texImage2D, copyTexImage2D and |
| 644 | // copyTexSubImage2D. |
| 645 | // Generates GL error and returns false if the format is not settable. |
| 646 | bool validateSettableTexFormat(const char* functionName, GC3Denum format); |
| 647 | |
| 648 | // Helper function to validate compressed texture data is correct size |
| 649 | // for the given format and dimensions. |
| 650 | bool validateCompressedTexFuncData(const char* functionName, |
| 651 | GC3Dsizei width, GC3Dsizei height, |
| 652 | GC3Denum format, ArrayBufferView* pixels); |
| 653 | |
| 654 | // Helper function for validating compressed texture formats. |
| 655 | bool validateCompressedTexFormat(GC3Denum format); |
| 656 | |
| 657 | // Helper function to validate compressed texture dimensions are valid for |
| 658 | // the given format. |
| 659 | bool validateCompressedTexDimensions(const char* functionName, GC3Dint level, GC3Dsizei width, GC3Dsizei height, GC3Denum format); |
| 660 | |
| 661 | // Helper function to validate compressed texture dimensions are valid for |
| 662 | // the given format. |
| 663 | bool validateCompressedTexSubDimensions(const char* functionName, GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, |
| 664 | GC3Dsizei width, GC3Dsizei height, GC3Denum format, WebGLTexture*); |
| 665 | |
| 666 | // Helper function to validate mode for draw{Arrays/Elements}. |
| 667 | bool validateDrawMode(const char* functionName, GC3Denum); |
| 668 | |
| 669 | // Helper function to validate if front/back stencilMask and stencilFunc settings are the same. |
| 670 | bool validateStencilSettings(const char* functionName); |
| 671 | |
| 672 | // Helper function to validate stencil func. |
| 673 | bool validateStencilFunc(const char* functionName, GC3Denum); |
| 674 | |
| 675 | // Helper function for texParameterf and texParameteri. |
| 676 | void texParameter(GC3Denum target, GC3Denum pname, GC3Dfloat parami, GC3Dint paramf, bool isFloat); |
| 677 | |
| 678 | // Helper function to print GL errors to console. |
| 679 | void printGLErrorToConsole(const String&); |
| 680 | void printGLWarningToConsole(const char* function, const char* reason); |
| 681 | |
| 682 | // Helper function to print warnings to console. Currently |
| 683 | // used only to warn about use of obsolete functions. |
| 684 | void printWarningToConsole(const String&); |
| 685 | |
| 686 | // Helper function to validate input parameters for framebuffer functions. |
| 687 | // Generate GL error if parameters are illegal. |
| 688 | bool validateFramebufferFuncParameters(const char* functionName, GC3Denum target, GC3Denum attachment); |
| 689 | |
| 690 | // Helper function to validate blend equation mode. |
| 691 | bool validateBlendEquation(const char* functionName, GC3Denum); |
| 692 | |
| 693 | // Helper function to validate blend func factors. |
| 694 | bool validateBlendFuncFactors(const char* functionName, GC3Denum src, GC3Denum dst); |
| 695 | |
| 696 | // Helper function to validate a GL capability. |
| 697 | bool validateCapability(const char* functionName, GC3Denum); |
| 698 | |
| 699 | // Helper function to validate input parameters for uniform functions. |
| 700 | bool validateUniformParameters(const char* functionName, const WebGLUniformLocation*, Float32Array*, GC3Dsizei mod); |
| 701 | bool validateUniformParameters(const char* functionName, const WebGLUniformLocation*, Int32Array*, GC3Dsizei mod); |
| 702 | bool validateUniformParameters(const char* functionName, const WebGLUniformLocation*, void*, GC3Dsizei, GC3Dsizei mod); |
| 703 | bool validateUniformMatrixParameters(const char* functionName, const WebGLUniformLocation*, GC3Dboolean transpose, Float32Array*, GC3Dsizei mod); |
| 704 | bool validateUniformMatrixParameters(const char* functionName, const WebGLUniformLocation*, GC3Dboolean transpose, void*, GC3Dsizei, GC3Dsizei mod); |
| 705 | |
| 706 | // Helper function to validate parameters for bufferData. |
| 707 | // Return the current bound buffer to target, or 0 if parameters are invalid. |
| 708 | WebGLBuffer* validateBufferDataParameters(const char* functionName, GC3Denum target, GC3Denum usage); |
| 709 | |
| 710 | // Helper function for tex{Sub}Image2D to make sure image is ready and wouldn't taint Origin. |
| 711 | bool validateHTMLImageElement(const char* functionName, HTMLImageElement*, ExceptionCode&); |
| 712 | |
| 713 | // Helper function for tex{Sub}Image2D to make sure canvas is ready and wouldn't taint Origin. |
| 714 | bool validateHTMLCanvasElement(const char* functionName, HTMLCanvasElement*, ExceptionCode&); |
| 715 | |
| 716 | // Helper function for tex{Sub}Image2D to make sure video is ready wouldn't taint Origin. |
| 717 | bool validateHTMLVideoElement(const char* functionName, HTMLVideoElement*, ExceptionCode&); |
| 718 | |
| 719 | // Helper functions for vertexAttribNf{v}. |
| 720 | void vertexAttribfImpl(const char* functionName, GC3Duint index, GC3Dsizei expectedSize, GC3Dfloat, GC3Dfloat, GC3Dfloat, GC3Dfloat); |
| 721 | void vertexAttribfvImpl(const char* functionName, GC3Duint index, Float32Array*, GC3Dsizei expectedSize); |
| 722 | void vertexAttribfvImpl(const char* functionName, GC3Duint index, GC3Dfloat*, GC3Dsizei, GC3Dsizei expectedSize); |
| 723 | |
| 724 | // Helper function for delete* (deleteBuffer, deleteProgram, etc) functions. |
| 725 | // Return false if caller should return without further processing. |
| 726 | bool deleteObject(WebGLObject*); |
| 727 | |
| 728 | // Helper function for bind* (bindBuffer, bindTexture, etc) and useProgram. |
| 729 | // If the object has already been deleted, set deleted to true upon return. |
| 730 | // Return false if caller should return without further processing. |
| 731 | bool checkObjectToBeBound(const char* functionName, WebGLObject*, bool& deleted); |
| 732 | |
| 733 | void dispatchContextLostEvent(Timer<WebGLRenderingContext>*); |
| 734 | // Helper for restoration after context lost. |
| 735 | void maybeRestoreContext(Timer<WebGLRenderingContext>*); |
| 736 | |
| 737 | // Determine if we are running privileged code in the browser, for example, |
| 738 | // a Safari or Chrome extension. |
| 739 | bool allowPrivilegedExtensions() const; |
| 740 | |
| 741 | enum ConsoleDisplayPreference { |
| 742 | DisplayInConsole, |
| 743 | DontDisplayInConsole |
| 744 | }; |
| 745 | |
| 746 | // Wrapper for GraphicsContext3D::synthesizeGLError that sends a message |
| 747 | // to the JavaScript console. |
| 748 | void synthesizeGLError(GC3Denum, const char* functionName, const char* description, ConsoleDisplayPreference = DisplayInConsole); |
| 749 | |
| 750 | String ensureNotNull(const String&) const; |
| 751 | |
| 752 | // Enable or disable stencil test based on user setting and |
| 753 | // whether the current FBO has a stencil buffer. |
| 754 | void applyStencilTest(); |
| 755 | |
| 756 | // Helper for enabling or disabling a capability. |
| 757 | void enableOrDisable(GC3Denum capability, bool enable); |
| 758 | |
| 759 | // Clamp the width and height to GL_MAX_VIEWPORT_DIMS. |
| 760 | IntSize clampedCanvasSize(); |
| 761 | |
| 762 | // First time called, if EXT_draw_buffers is supported, query the value; otherwise return 0. |
| 763 | // Later, return the cached value. |
| 764 | GC3Dint getMaxDrawBuffers(); |
| 765 | GC3Dint getMaxColorAttachments(); |
| 766 | |
| 767 | void setBackDrawBuffer(GC3Denum); |
| 768 | |
| 769 | void restoreCurrentFramebuffer(); |
| 770 | void restoreCurrentTexture2D(); |
| 771 | |
| 772 | friend class WebGLStateRestorer; |
| 773 | friend class WebGLRenderingContextEvictionManager; |
| 774 | |
| 775 | static Vector<WebGLRenderingContext*>& activeContexts(); |
| 776 | static Vector<WebGLRenderingContext*>& forciblyEvictedContexts(); |
| 777 | |
| 778 | static void activateContext(WebGLRenderingContext*); |
| 779 | static void deactivateContext(WebGLRenderingContext*, bool addToInactiveList); |
| 780 | static void willDestroyContext(WebGLRenderingContext*); |
| 781 | static void forciblyLoseOldestContext(const String& reason); |
| 782 | static IntSize oldestContextSize(); |
| 783 | }; |
| 784 | |
| 785 | } // namespace WebCore |
| 786 | |
| 787 | #endif |