1 /* 2 * Copyright (C) 2012 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 are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef WebGraphicsContext3D_h 32 #define WebGraphicsContext3D_h 33 34 #include "WebCommon.h" 35 #include "WebNonCopyable.h" 36 #include "WebString.h" 37 38 struct GrGLInterface; 39 40 namespace blink { 41 42 // WGC3D types match the corresponding GL types as defined in OpenGL ES 2.0 43 // header file gl2.h from khronos.org. 44 typedef char WGC3Dchar; 45 typedef unsigned int WGC3Denum; 46 typedef unsigned char WGC3Dboolean; 47 typedef unsigned int WGC3Dbitfield; 48 typedef signed char WGC3Dbyte; 49 typedef unsigned char WGC3Dubyte; 50 typedef short WGC3Dshort; 51 typedef unsigned short WGC3Dushort; 52 typedef int WGC3Dint; 53 typedef int WGC3Dsizei; 54 typedef unsigned int WGC3Duint; 55 typedef float WGC3Dfloat; 56 typedef float WGC3Dclampf; 57 typedef signed long int WGC3Dintptr; 58 typedef signed long int WGC3Dsizeiptr; 59 60 // Typedef for server-side objects like OpenGL textures and program objects. 61 typedef WGC3Duint WebGLId; 62 63 // This interface abstracts the operations performed by the 64 // GraphicsContext3D in order to implement WebGL. Nearly all of the 65 // methods exposed on this interface map directly to entry points in 66 // the OpenGL ES 2.0 API. 67 // 68 // Creating a WebGraphicsContext does not make it current, or guarantee 69 // that the context has been created successfully. Use 70 // makeContextCurrent() to complete initialization of the context, treating 71 // a false return value as indication that the context could not be created 72 // successfully. 73 class WebGraphicsContext3D : public WebNonCopyable { 74 public: 75 // Return value from getActiveUniform and getActiveAttrib. 76 struct ActiveInfo { 77 WebString name; 78 WGC3Denum type; 79 WGC3Dint size; 80 }; 81 82 // Context creation attributes. 83 struct Attributes { AttributesAttributes84 Attributes() 85 : alpha(true) 86 , depth(true) 87 , stencil(true) 88 , antialias(true) 89 , premultipliedAlpha(true) 90 , canRecoverFromContextLoss(true) 91 , noExtensions(false) 92 , shareResources(true) 93 , preferDiscreteGPU(false) 94 , noAutomaticFlushes(false) 95 , failIfMajorPerformanceCaveat(false) 96 { 97 } 98 99 bool alpha; 100 bool depth; 101 bool stencil; 102 bool antialias; 103 bool premultipliedAlpha; 104 bool canRecoverFromContextLoss; 105 bool noExtensions; 106 bool shareResources; 107 bool preferDiscreteGPU; 108 bool noAutomaticFlushes; 109 bool failIfMajorPerformanceCaveat; 110 // FIXME: ideally this would be a WebURL, but it is currently not 111 // possible to pass a WebURL by value across the WebKit API boundary. 112 // See https://bugs.webkit.org/show_bug.cgi?id=103793#c13 . 113 WebString topDocumentURL; 114 }; 115 116 class WebGraphicsContextLostCallback { 117 public: 118 virtual void onContextLost() = 0; 119 120 protected: ~WebGraphicsContextLostCallback()121 virtual ~WebGraphicsContextLostCallback() { } 122 }; 123 124 class WebGraphicsErrorMessageCallback { 125 public: 126 virtual void onErrorMessage(const WebString&, WGC3Dint) = 0; 127 128 protected: ~WebGraphicsErrorMessageCallback()129 virtual ~WebGraphicsErrorMessageCallback() { } 130 }; 131 132 class WebGraphicsSwapBuffersCompleteCallbackCHROMIUM { 133 public: 134 virtual void onSwapBuffersComplete() = 0; 135 136 protected: ~WebGraphicsSwapBuffersCompleteCallbackCHROMIUM()137 virtual ~WebGraphicsSwapBuffersCompleteCallbackCHROMIUM() { } 138 }; 139 140 // This destructor needs to be public so that using classes can destroy instances if initialization fails. ~WebGraphicsContext3D()141 virtual ~WebGraphicsContext3D() { } 142 143 // Makes the OpenGL context current on the current thread. Returns true on 144 // success. 145 virtual bool makeContextCurrent() = 0; 146 147 // Each flush or finish is assigned an unique ID. The larger 148 // the ID number, the more recently the context has been flushed. lastFlushID()149 virtual uint32_t lastFlushID() { return 0; } 150 151 // Resizes the region into which this WebGraphicsContext3D is drawing. reshapeWithScaleFactor(int width,int height,float scaleFactor)152 virtual void reshapeWithScaleFactor(int width, int height, float scaleFactor) { } 153 154 // GL_CHROMIUM_setVisibility - Changes the visibility of the backbuffer 155 virtual void setVisibilityCHROMIUM(bool visible) = 0; 156 157 // GL_EXT_discard_framebuffer - makes specified attachments of currently bound framebuffer undefined. discardFramebufferEXT(WGC3Denum target,WGC3Dsizei numAttachments,const WGC3Denum * attachments)158 virtual void discardFramebufferEXT(WGC3Denum target, WGC3Dsizei numAttachments, const WGC3Denum* attachments) { } 159 160 // GL_CHROMIUM_discard_backbuffer - controls allocation/deallocation of the back buffer. discardBackbufferCHROMIUM()161 virtual void discardBackbufferCHROMIUM() { } ensureBackbufferCHROMIUM()162 virtual void ensureBackbufferCHROMIUM() { } 163 insertSyncPoint()164 virtual unsigned insertSyncPoint() { return 0; } waitSyncPoint(unsigned)165 virtual void waitSyncPoint(unsigned) { } 166 167 // Copies the contents of the off-screen render target used by the WebGL 168 // context to the corresponding texture used by the compositor. 169 virtual void prepareTexture() = 0; 170 171 // GL_CHROMIUM_post_sub_buffer - Copies part of the back buffer to the front buffer. 172 virtual void postSubBufferCHROMIUM(int x, int y, int width, int height) = 0; 173 174 // Synthesizes an OpenGL error which will be returned from a 175 // later call to getError. This is used to emulate OpenGL ES 176 // 2.0 behavior on the desktop and to enforce additional error 177 // checking mandated by WebGL. 178 // 179 // Per the behavior of glGetError, this stores at most one 180 // instance of any given error, and returns them from calls to 181 // getError in the order they were added. 182 virtual void synthesizeGLError(WGC3Denum) = 0; 183 184 virtual bool isContextLost() = 0; 185 186 // GL_CHROMIUM_map_sub 187 virtual void* mapBufferSubDataCHROMIUM(WGC3Denum target, WGC3Dintptr offset, WGC3Dsizeiptr size, WGC3Denum access) = 0; 188 virtual void unmapBufferSubDataCHROMIUM(const void*) = 0; 189 virtual void* mapTexSubImage2DCHROMIUM(WGC3Denum target, WGC3Dint level, WGC3Dint xoffset, WGC3Dint yoffset, WGC3Dsizei width, WGC3Dsizei height, WGC3Denum format, WGC3Denum type, WGC3Denum access) = 0; 190 virtual void unmapTexSubImage2DCHROMIUM(const void*) = 0; 191 192 // GL_CHROMIUM_request_extension 193 virtual WebString getRequestableExtensionsCHROMIUM() = 0; 194 virtual void requestExtensionCHROMIUM(const char*) = 0; 195 196 // GL_CHROMIUM_framebuffer_multisample 197 virtual void blitFramebufferCHROMIUM(WGC3Dint srcX0, WGC3Dint srcY0, WGC3Dint srcX1, WGC3Dint srcY1, WGC3Dint dstX0, WGC3Dint dstY0, WGC3Dint dstX1, WGC3Dint dstY1, WGC3Dbitfield mask, WGC3Denum filter) = 0; 198 virtual void renderbufferStorageMultisampleCHROMIUM(WGC3Denum target, WGC3Dsizei samples, WGC3Denum internalformat, WGC3Dsizei width, WGC3Dsizei height) = 0; 199 200 // GL_CHROMIUM_swapbuffers_complete_callback setSwapBuffersCompleteCallbackCHROMIUM(WebGraphicsSwapBuffersCompleteCallbackCHROMIUM * callback)201 virtual void setSwapBuffersCompleteCallbackCHROMIUM(WebGraphicsSwapBuffersCompleteCallbackCHROMIUM* callback) { } 202 203 // GL_CHROMIUM_rate_limit_offscreen_context rateLimitOffscreenContextCHROMIUM()204 virtual void rateLimitOffscreenContextCHROMIUM() { } 205 206 // GL_CHROMIUM_stream_texture 207 // Returns the stream end point identifier created for the given texture. createStreamTextureCHROMIUM(WebGLId texture)208 virtual WebGLId createStreamTextureCHROMIUM(WebGLId texture) { return 0; } 209 // Destroys the stream for the given texture. destroyStreamTextureCHROMIUM(WebGLId texture)210 virtual void destroyStreamTextureCHROMIUM(WebGLId texture) { } 211 212 // GL_CHROMIUM_lose_context loseContextCHROMIUM(WGC3Denum current,WGC3Denum other)213 virtual void loseContextCHROMIUM(WGC3Denum current, WGC3Denum other) { } 214 215 // The entry points below map directly to the OpenGL ES 2.0 API. 216 // See: http://www.khronos.org/registry/gles/ 217 // and: http://www.khronos.org/opengles/sdk/docs/man/ 218 virtual void activeTexture(WGC3Denum texture) = 0; 219 virtual void attachShader(WebGLId program, WebGLId shader) = 0; 220 virtual void bindAttribLocation(WebGLId program, WGC3Duint index, const WGC3Dchar* name) = 0; 221 virtual void bindBuffer(WGC3Denum target, WebGLId buffer) = 0; 222 virtual void bindFramebuffer(WGC3Denum target, WebGLId framebuffer) = 0; 223 virtual void bindRenderbuffer(WGC3Denum target, WebGLId renderbuffer) = 0; 224 virtual void bindTexture(WGC3Denum target, WebGLId texture) = 0; 225 virtual void blendColor(WGC3Dclampf red, WGC3Dclampf green, WGC3Dclampf blue, WGC3Dclampf alpha) = 0; 226 virtual void blendEquation(WGC3Denum mode) = 0; 227 virtual void blendEquationSeparate(WGC3Denum modeRGB, WGC3Denum modeAlpha) = 0; 228 virtual void blendFunc(WGC3Denum sfactor, WGC3Denum dfactor) = 0; 229 virtual void blendFuncSeparate(WGC3Denum srcRGB, WGC3Denum dstRGB, WGC3Denum srcAlpha, WGC3Denum dstAlpha) = 0; 230 231 virtual void bufferData(WGC3Denum target, WGC3Dsizeiptr size, const void* data, WGC3Denum usage) = 0; 232 virtual void bufferSubData(WGC3Denum target, WGC3Dintptr offset, WGC3Dsizeiptr size, const void* data) = 0; 233 234 virtual WGC3Denum checkFramebufferStatus(WGC3Denum target) = 0; 235 virtual void clear(WGC3Dbitfield mask) = 0; 236 virtual void clearColor(WGC3Dclampf red, WGC3Dclampf green, WGC3Dclampf blue, WGC3Dclampf alpha) = 0; 237 virtual void clearDepth(WGC3Dclampf depth) = 0; 238 virtual void clearStencil(WGC3Dint s) = 0; 239 virtual void colorMask(WGC3Dboolean red, WGC3Dboolean green, WGC3Dboolean blue, WGC3Dboolean alpha) = 0; 240 virtual void compileShader(WebGLId shader) = 0; 241 242 virtual void compressedTexImage2D(WGC3Denum target, WGC3Dint level, WGC3Denum internalformat, WGC3Dsizei width, WGC3Dsizei height, WGC3Dint border, WGC3Dsizei imageSize, const void* data) = 0; 243 virtual void compressedTexSubImage2D(WGC3Denum target, WGC3Dint level, WGC3Dint xoffset, WGC3Dint yoffset, WGC3Dsizei width, WGC3Dsizei height, WGC3Denum format, WGC3Dsizei imageSize, const void* data) = 0; 244 virtual void copyTexImage2D(WGC3Denum target, WGC3Dint level, WGC3Denum internalformat, WGC3Dint x, WGC3Dint y, WGC3Dsizei width, WGC3Dsizei height, WGC3Dint border) = 0; 245 virtual void copyTexSubImage2D(WGC3Denum target, WGC3Dint level, WGC3Dint xoffset, WGC3Dint yoffset, WGC3Dint x, WGC3Dint y, WGC3Dsizei width, WGC3Dsizei height) = 0; 246 virtual void cullFace(WGC3Denum mode) = 0; 247 virtual void depthFunc(WGC3Denum func) = 0; 248 virtual void depthMask(WGC3Dboolean flag) = 0; 249 virtual void depthRange(WGC3Dclampf zNear, WGC3Dclampf zFar) = 0; 250 virtual void detachShader(WebGLId program, WebGLId shader) = 0; 251 virtual void disable(WGC3Denum cap) = 0; 252 virtual void disableVertexAttribArray(WGC3Duint index) = 0; 253 virtual void drawArrays(WGC3Denum mode, WGC3Dint first, WGC3Dsizei count) = 0; 254 virtual void drawElements(WGC3Denum mode, WGC3Dsizei count, WGC3Denum type, WGC3Dintptr offset) = 0; 255 256 virtual void enable(WGC3Denum cap) = 0; 257 virtual void enableVertexAttribArray(WGC3Duint index) = 0; 258 virtual void finish() = 0; 259 virtual void flush() = 0; 260 virtual void framebufferRenderbuffer(WGC3Denum target, WGC3Denum attachment, WGC3Denum renderbuffertarget, WebGLId renderbuffer) = 0; 261 virtual void framebufferTexture2D(WGC3Denum target, WGC3Denum attachment, WGC3Denum textarget, WebGLId texture, WGC3Dint level) = 0; 262 virtual void frontFace(WGC3Denum mode) = 0; 263 virtual void generateMipmap(WGC3Denum target) = 0; 264 265 virtual bool getActiveAttrib(WebGLId program, WGC3Duint index, ActiveInfo&) = 0; 266 virtual bool getActiveUniform(WebGLId program, WGC3Duint index, ActiveInfo&) = 0; 267 virtual void getAttachedShaders(WebGLId program, WGC3Dsizei maxCount, WGC3Dsizei* count, WebGLId* shaders) = 0; 268 virtual WGC3Dint getAttribLocation(WebGLId program, const WGC3Dchar* name) = 0; 269 virtual void getBooleanv(WGC3Denum pname, WGC3Dboolean* value) = 0; 270 virtual void getBufferParameteriv(WGC3Denum target, WGC3Denum pname, WGC3Dint* value) = 0; 271 virtual Attributes getContextAttributes() = 0; 272 virtual WGC3Denum getError() = 0; 273 virtual void getFloatv(WGC3Denum pname, WGC3Dfloat* value) = 0; 274 virtual void getFramebufferAttachmentParameteriv(WGC3Denum target, WGC3Denum attachment, WGC3Denum pname, WGC3Dint* value) = 0; 275 virtual void getIntegerv(WGC3Denum pname, WGC3Dint* value) = 0; 276 virtual void getProgramiv(WebGLId program, WGC3Denum pname, WGC3Dint* value) = 0; 277 virtual WebString getProgramInfoLog(WebGLId program) = 0; 278 virtual void getRenderbufferParameteriv(WGC3Denum target, WGC3Denum pname, WGC3Dint* value) = 0; 279 virtual void getShaderiv(WebGLId shader, WGC3Denum pname, WGC3Dint* value) = 0; 280 virtual WebString getShaderInfoLog(WebGLId shader) = 0; 281 virtual void getShaderPrecisionFormat(WGC3Denum shadertype, WGC3Denum precisiontype, WGC3Dint* range, WGC3Dint* precision) = 0; 282 virtual WebString getShaderSource(WebGLId shader) = 0; 283 virtual WebString getString(WGC3Denum name) = 0; 284 virtual void getTexParameterfv(WGC3Denum target, WGC3Denum pname, WGC3Dfloat* value) = 0; 285 virtual void getTexParameteriv(WGC3Denum target, WGC3Denum pname, WGC3Dint* value) = 0; 286 virtual void getUniformfv(WebGLId program, WGC3Dint location, WGC3Dfloat* value) = 0; 287 virtual void getUniformiv(WebGLId program, WGC3Dint location, WGC3Dint* value) = 0; 288 virtual WGC3Dint getUniformLocation(WebGLId program, const WGC3Dchar* name) = 0; 289 virtual void getVertexAttribfv(WGC3Duint index, WGC3Denum pname, WGC3Dfloat* value) = 0; 290 virtual void getVertexAttribiv(WGC3Duint index, WGC3Denum pname, WGC3Dint* value) = 0; 291 virtual WGC3Dsizeiptr getVertexAttribOffset(WGC3Duint index, WGC3Denum pname) = 0; 292 293 virtual void hint(WGC3Denum target, WGC3Denum mode) = 0; 294 virtual WGC3Dboolean isBuffer(WebGLId buffer) = 0; 295 virtual WGC3Dboolean isEnabled(WGC3Denum cap) = 0; 296 virtual WGC3Dboolean isFramebuffer(WebGLId framebuffer) = 0; 297 virtual WGC3Dboolean isProgram(WebGLId program) = 0; 298 virtual WGC3Dboolean isRenderbuffer(WebGLId renderbuffer) = 0; 299 virtual WGC3Dboolean isShader(WebGLId shader) = 0; 300 virtual WGC3Dboolean isTexture(WebGLId texture) = 0; 301 virtual void lineWidth(WGC3Dfloat) = 0; 302 virtual void linkProgram(WebGLId program) = 0; 303 virtual void pixelStorei(WGC3Denum pname, WGC3Dint param) = 0; 304 virtual void polygonOffset(WGC3Dfloat factor, WGC3Dfloat units) = 0; 305 306 virtual void readPixels(WGC3Dint x, WGC3Dint y, WGC3Dsizei width, WGC3Dsizei height, WGC3Denum format, WGC3Denum type, void* pixels) = 0; 307 308 virtual void releaseShaderCompiler() = 0; 309 310 virtual void renderbufferStorage(WGC3Denum target, WGC3Denum internalformat, WGC3Dsizei width, WGC3Dsizei height) = 0; 311 virtual void sampleCoverage(WGC3Dclampf value, WGC3Dboolean invert) = 0; 312 virtual void scissor(WGC3Dint x, WGC3Dint y, WGC3Dsizei width, WGC3Dsizei height) = 0; 313 virtual void shaderSource(WebGLId shader, const WGC3Dchar* string) = 0; 314 virtual void stencilFunc(WGC3Denum func, WGC3Dint ref, WGC3Duint mask) = 0; 315 virtual void stencilFuncSeparate(WGC3Denum face, WGC3Denum func, WGC3Dint ref, WGC3Duint mask) = 0; 316 virtual void stencilMask(WGC3Duint mask) = 0; 317 virtual void stencilMaskSeparate(WGC3Denum face, WGC3Duint mask) = 0; 318 virtual void stencilOp(WGC3Denum fail, WGC3Denum zfail, WGC3Denum zpass) = 0; 319 virtual void stencilOpSeparate(WGC3Denum face, WGC3Denum fail, WGC3Denum zfail, WGC3Denum zpass) = 0; 320 321 virtual void texImage2D(WGC3Denum target, WGC3Dint level, WGC3Denum internalformat, WGC3Dsizei width, WGC3Dsizei height, WGC3Dint border, WGC3Denum format, WGC3Denum type, const void* pixels) = 0; 322 323 virtual void texParameterf(WGC3Denum target, WGC3Denum pname, WGC3Dfloat param) = 0; 324 virtual void texParameteri(WGC3Denum target, WGC3Denum pname, WGC3Dint param) = 0; 325 326 virtual void texSubImage2D(WGC3Denum target, WGC3Dint level, WGC3Dint xoffset, WGC3Dint yoffset, WGC3Dsizei width, WGC3Dsizei height, WGC3Denum format, WGC3Denum type, const void* pixels) = 0; 327 328 virtual void uniform1f(WGC3Dint location, WGC3Dfloat x) = 0; 329 virtual void uniform1fv(WGC3Dint location, WGC3Dsizei count, const WGC3Dfloat* v) = 0; 330 virtual void uniform1i(WGC3Dint location, WGC3Dint x) = 0; 331 virtual void uniform1iv(WGC3Dint location, WGC3Dsizei count, const WGC3Dint* v) = 0; 332 virtual void uniform2f(WGC3Dint location, WGC3Dfloat x, WGC3Dfloat y) = 0; 333 virtual void uniform2fv(WGC3Dint location, WGC3Dsizei count, const WGC3Dfloat* v) = 0; 334 virtual void uniform2i(WGC3Dint location, WGC3Dint x, WGC3Dint y) = 0; 335 virtual void uniform2iv(WGC3Dint location, WGC3Dsizei count, const WGC3Dint* v) = 0; 336 virtual void uniform3f(WGC3Dint location, WGC3Dfloat x, WGC3Dfloat y, WGC3Dfloat z) = 0; 337 virtual void uniform3fv(WGC3Dint location, WGC3Dsizei count, const WGC3Dfloat* v) = 0; 338 virtual void uniform3i(WGC3Dint location, WGC3Dint x, WGC3Dint y, WGC3Dint z) = 0; 339 virtual void uniform3iv(WGC3Dint location, WGC3Dsizei count, const WGC3Dint* v) = 0; 340 virtual void uniform4f(WGC3Dint location, WGC3Dfloat x, WGC3Dfloat y, WGC3Dfloat z, WGC3Dfloat w) = 0; 341 virtual void uniform4fv(WGC3Dint location, WGC3Dsizei count, const WGC3Dfloat* v) = 0; 342 virtual void uniform4i(WGC3Dint location, WGC3Dint x, WGC3Dint y, WGC3Dint z, WGC3Dint w) = 0; 343 virtual void uniform4iv(WGC3Dint location, WGC3Dsizei count, const WGC3Dint* v) = 0; 344 virtual void uniformMatrix2fv(WGC3Dint location, WGC3Dsizei count, WGC3Dboolean transpose, const WGC3Dfloat* value) = 0; 345 virtual void uniformMatrix3fv(WGC3Dint location, WGC3Dsizei count, WGC3Dboolean transpose, const WGC3Dfloat* value) = 0; 346 virtual void uniformMatrix4fv(WGC3Dint location, WGC3Dsizei count, WGC3Dboolean transpose, const WGC3Dfloat* value) = 0; 347 348 virtual void useProgram(WebGLId program) = 0; 349 virtual void validateProgram(WebGLId program) = 0; 350 351 virtual void vertexAttrib1f(WGC3Duint index, WGC3Dfloat x) = 0; 352 virtual void vertexAttrib1fv(WGC3Duint index, const WGC3Dfloat* values) = 0; 353 virtual void vertexAttrib2f(WGC3Duint index, WGC3Dfloat x, WGC3Dfloat y) = 0; 354 virtual void vertexAttrib2fv(WGC3Duint index, const WGC3Dfloat* values) = 0; 355 virtual void vertexAttrib3f(WGC3Duint index, WGC3Dfloat x, WGC3Dfloat y, WGC3Dfloat z) = 0; 356 virtual void vertexAttrib3fv(WGC3Duint index, const WGC3Dfloat* values) = 0; 357 virtual void vertexAttrib4f(WGC3Duint index, WGC3Dfloat x, WGC3Dfloat y, WGC3Dfloat z, WGC3Dfloat w) = 0; 358 virtual void vertexAttrib4fv(WGC3Duint index, const WGC3Dfloat* values) = 0; 359 virtual void vertexAttribPointer(WGC3Duint index, WGC3Dint size, WGC3Denum type, WGC3Dboolean normalized, 360 WGC3Dsizei stride, WGC3Dintptr offset) = 0; 361 362 virtual void viewport(WGC3Dint x, WGC3Dint y, WGC3Dsizei width, WGC3Dsizei height) = 0; 363 364 // Support for buffer creation and deletion. genBuffers(WGC3Dsizei count,WebGLId * ids)365 virtual void genBuffers(WGC3Dsizei count, WebGLId* ids) { } genFramebuffers(WGC3Dsizei count,WebGLId * ids)366 virtual void genFramebuffers(WGC3Dsizei count, WebGLId* ids) { } genRenderbuffers(WGC3Dsizei count,WebGLId * ids)367 virtual void genRenderbuffers(WGC3Dsizei count, WebGLId* ids) { } genTextures(WGC3Dsizei count,WebGLId * ids)368 virtual void genTextures(WGC3Dsizei count, WebGLId* ids) { } 369 deleteBuffers(WGC3Dsizei count,WebGLId * ids)370 virtual void deleteBuffers(WGC3Dsizei count, WebGLId* ids) { } deleteFramebuffers(WGC3Dsizei count,WebGLId * ids)371 virtual void deleteFramebuffers(WGC3Dsizei count, WebGLId* ids) { } deleteRenderbuffers(WGC3Dsizei count,WebGLId * ids)372 virtual void deleteRenderbuffers(WGC3Dsizei count, WebGLId* ids) { } deleteTextures(WGC3Dsizei count,WebGLId * ids)373 virtual void deleteTextures(WGC3Dsizei count, WebGLId* ids) { } 374 375 virtual WebGLId createBuffer() = 0; 376 virtual WebGLId createFramebuffer() = 0; 377 virtual WebGLId createRenderbuffer() = 0; 378 virtual WebGLId createTexture() = 0; 379 380 virtual void deleteBuffer(WebGLId) = 0; 381 virtual void deleteFramebuffer(WebGLId) = 0; 382 virtual void deleteRenderbuffer(WebGLId) = 0; 383 virtual void deleteTexture(WebGLId) = 0; 384 385 virtual WebGLId createProgram() = 0; 386 virtual WebGLId createShader(WGC3Denum) = 0; 387 388 virtual void deleteShader(WebGLId) = 0; 389 virtual void deleteProgram(WebGLId) = 0; 390 setContextLostCallback(WebGraphicsContextLostCallback * callback)391 virtual void setContextLostCallback(WebGraphicsContextLostCallback* callback) { } setErrorMessageCallback(WebGraphicsErrorMessageCallback * callback)392 virtual void setErrorMessageCallback(WebGraphicsErrorMessageCallback* callback) { } 393 // GL_ARB_robustness 394 // 395 // This entry point must provide slightly different semantics than 396 // the GL_ARB_robustness extension; specifically, the lost context 397 // state is sticky, rather than reported only once. getGraphicsResetStatusARB()398 virtual WGC3Denum getGraphicsResetStatusARB() { return 0; /* GL_NO_ERROR */ } 399 400 // FIXME: make this function pure virtual once it is implemented in 401 // both command buffer port and in-process port. getTranslatedShaderSourceANGLE(WebGLId shader)402 virtual WebString getTranslatedShaderSourceANGLE(WebGLId shader) { return WebString(); } 403 404 // GL_CHROMIUM_iosurface texImageIOSurface2DCHROMIUM(WGC3Denum target,WGC3Dint width,WGC3Dint height,WGC3Duint ioSurfaceId,WGC3Duint plane)405 virtual void texImageIOSurface2DCHROMIUM(WGC3Denum target, WGC3Dint width, WGC3Dint height, WGC3Duint ioSurfaceId, WGC3Duint plane) { } 406 407 // GL_EXT_texture_storage texStorage2DEXT(WGC3Denum target,WGC3Dint levels,WGC3Duint internalformat,WGC3Dint width,WGC3Dint height)408 virtual void texStorage2DEXT(WGC3Denum target, WGC3Dint levels, WGC3Duint internalformat, 409 WGC3Dint width, WGC3Dint height) { } 410 411 // GL_EXT_occlusion_query createQueryEXT()412 virtual WebGLId createQueryEXT() { return 0; } deleteQueryEXT(WebGLId query)413 virtual void deleteQueryEXT(WebGLId query) { } isQueryEXT(WebGLId query)414 virtual WGC3Dboolean isQueryEXT(WebGLId query) { return false; } beginQueryEXT(WGC3Denum target,WebGLId query)415 virtual void beginQueryEXT(WGC3Denum target, WebGLId query) { } endQueryEXT(WGC3Denum target)416 virtual void endQueryEXT(WGC3Denum target) { } getQueryivEXT(WGC3Denum target,WGC3Denum pname,WGC3Dint * params)417 virtual void getQueryivEXT(WGC3Denum target, WGC3Denum pname, WGC3Dint* params) { } getQueryObjectuivEXT(WebGLId query,WGC3Denum pname,WGC3Duint * params)418 virtual void getQueryObjectuivEXT(WebGLId query, WGC3Denum pname, WGC3Duint* params) { } 419 420 // GL_CHROMIUM_bind_uniform_location bindUniformLocationCHROMIUM(WebGLId program,WGC3Dint location,const WGC3Dchar * uniform)421 virtual void bindUniformLocationCHROMIUM(WebGLId program, WGC3Dint location, const WGC3Dchar* uniform) { } 422 423 // GL_CHROMIUM_copy_texture copyTextureCHROMIUM(WGC3Denum target,WGC3Duint sourceId,WGC3Duint destId,WGC3Dint level,WGC3Denum internalFormat,WGC3Denum destType)424 virtual void copyTextureCHROMIUM(WGC3Denum target, WGC3Duint sourceId, 425 WGC3Duint destId, WGC3Dint level, WGC3Denum internalFormat, WGC3Denum destType) { } 426 427 // GL_CHROMIUM_shallow_flush shallowFlushCHROMIUM()428 virtual void shallowFlushCHROMIUM() { } shallowFinishCHROMIUM()429 virtual void shallowFinishCHROMIUM() { } 430 431 // GL_CHROMIUM_texture_mailbox genMailboxCHROMIUM(WGC3Dbyte * mailbox)432 virtual void genMailboxCHROMIUM(WGC3Dbyte* mailbox) { } produceTextureCHROMIUM(WGC3Denum target,const WGC3Dbyte * mailbox)433 virtual void produceTextureCHROMIUM(WGC3Denum target, const WGC3Dbyte* mailbox) { } consumeTextureCHROMIUM(WGC3Denum target,const WGC3Dbyte * mailbox)434 virtual void consumeTextureCHROMIUM(WGC3Denum target, const WGC3Dbyte* mailbox) { } 435 436 // GL_EXT_debug_marker insertEventMarkerEXT(const WGC3Dchar * marker)437 virtual void insertEventMarkerEXT(const WGC3Dchar* marker) { } pushGroupMarkerEXT(const WGC3Dchar * marker)438 virtual void pushGroupMarkerEXT(const WGC3Dchar* marker) { } popGroupMarkerEXT(void)439 virtual void popGroupMarkerEXT(void) { } 440 441 // GL_OES_vertex_array_object createVertexArrayOES()442 virtual WebGLId createVertexArrayOES() { return 0; } deleteVertexArrayOES(WebGLId array)443 virtual void deleteVertexArrayOES(WebGLId array) { } isVertexArrayOES(WebGLId array)444 virtual WGC3Dboolean isVertexArrayOES(WebGLId array) { return false; } bindVertexArrayOES(WebGLId array)445 virtual void bindVertexArrayOES(WebGLId array) { } 446 447 // GL_CHROMIUM_texture_from_image bindTexImage2DCHROMIUM(WGC3Denum target,WGC3Dint imageId)448 virtual void bindTexImage2DCHROMIUM(WGC3Denum target, WGC3Dint imageId) { } releaseTexImage2DCHROMIUM(WGC3Denum target,WGC3Dint imageId)449 virtual void releaseTexImage2DCHROMIUM(WGC3Denum target, WGC3Dint imageId) { } 450 451 // GL_CHROMIUM_pixel_transfer_buffer_object mapBufferCHROMIUM(WGC3Denum target,WGC3Denum access)452 virtual void* mapBufferCHROMIUM(WGC3Denum target, WGC3Denum access) { return 0; } unmapBufferCHROMIUM(WGC3Denum target)453 virtual WGC3Dboolean unmapBufferCHROMIUM(WGC3Denum target) { return false; } 454 455 // GL_CHROMIUM_async_pixel_transfers asyncTexImage2DCHROMIUM(WGC3Denum target,WGC3Dint level,WGC3Denum internalformat,WGC3Dsizei width,WGC3Dsizei height,WGC3Dint border,WGC3Denum format,WGC3Denum type,const void * pixels)456 virtual void asyncTexImage2DCHROMIUM(WGC3Denum target, WGC3Dint level, WGC3Denum internalformat, WGC3Dsizei width, WGC3Dsizei height, WGC3Dint border, WGC3Denum format, WGC3Denum type, const void* pixels) { } asyncTexSubImage2DCHROMIUM(WGC3Denum target,WGC3Dint level,WGC3Dint xoffset,WGC3Dint yoffset,WGC3Dsizei width,WGC3Dsizei height,WGC3Denum format,WGC3Denum type,const void * pixels)457 virtual void asyncTexSubImage2DCHROMIUM(WGC3Denum target, WGC3Dint level, WGC3Dint xoffset, WGC3Dint yoffset, WGC3Dsizei width, WGC3Dsizei height, WGC3Denum format, WGC3Denum type, const void* pixels) { } waitAsyncTexImage2DCHROMIUM(WGC3Denum)458 virtual void waitAsyncTexImage2DCHROMIUM(WGC3Denum) { } 459 460 // GL_EXT_draw_buffers drawBuffersEXT(WGC3Dsizei n,const WGC3Denum * bufs)461 virtual void drawBuffersEXT(WGC3Dsizei n, const WGC3Denum* bufs) { } 462 createGrGLInterface()463 virtual GrGLInterface* createGrGLInterface() { return 0; } 464 465 // GL_CHROMIUM_map_image createImageCHROMIUM(WGC3Dsizei width,WGC3Dsizei height,WGC3Denum internalformat)466 virtual WGC3Duint createImageCHROMIUM(WGC3Dsizei width, WGC3Dsizei height, WGC3Denum internalformat) { return 0; } destroyImageCHROMIUM(WGC3Duint imageId)467 virtual void destroyImageCHROMIUM(WGC3Duint imageId) { } getImageParameterivCHROMIUM(WGC3Duint imageId,WGC3Denum pname,WGC3Dint * params)468 virtual void getImageParameterivCHROMIUM(WGC3Duint imageId, WGC3Denum pname, WGC3Dint* params) { } mapImageCHROMIUM(WGC3Duint imageId,WGC3Denum access)469 virtual void* mapImageCHROMIUM(WGC3Duint imageId, WGC3Denum access) { return 0; } unmapImageCHROMIUM(WGC3Duint imageId)470 virtual void unmapImageCHROMIUM(WGC3Duint imageId) { } 471 472 // GL_ANGLE_instanced_arrays drawArraysInstancedANGLE(WGC3Denum mode,WGC3Dint first,WGC3Dsizei count,WGC3Dsizei primcount)473 virtual void drawArraysInstancedANGLE(WGC3Denum mode, WGC3Dint first, WGC3Dsizei count, WGC3Dsizei primcount) { } drawElementsInstancedANGLE(WGC3Denum mode,WGC3Dsizei count,WGC3Denum type,WGC3Dintptr offset,WGC3Dsizei primcount)474 virtual void drawElementsInstancedANGLE(WGC3Denum mode, WGC3Dsizei count, WGC3Denum type, WGC3Dintptr offset, WGC3Dsizei primcount) { } vertexAttribDivisorANGLE(WGC3Duint index,WGC3Duint divisor)475 virtual void vertexAttribDivisorANGLE(WGC3Duint index, WGC3Duint divisor) { } 476 }; 477 478 } // namespace blink 479 480 #endif 481