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 GraphicsContext3D_h 27 #define GraphicsContext3D_h 28 29 #include "PlatformString.h" 30 31 #include <wtf/ListHashSet.h> 32 #include <wtf/Noncopyable.h> 33 #include <wtf/PassOwnPtr.h> 34 35 // FIXME: Find a better way to avoid the name confliction for NO_ERROR. 36 #if ((PLATFORM(CHROMIUM) && OS(WINDOWS)) || PLATFORM(WIN)) 37 #undef NO_ERROR 38 #endif 39 40 #if PLATFORM(MAC) 41 #include <OpenGL/OpenGL.h> 42 43 typedef void* PlatformGraphicsContext3D; 44 const PlatformGraphicsContext3D NullPlatformGraphicsContext3D = 0; 45 typedef GLuint Platform3DObject; 46 const Platform3DObject NullPlatform3DObject = 0; 47 #else 48 typedef void* PlatformGraphicsContext3D; 49 const PlatformGraphicsContext3D NullPlatformGraphicsContext3D = 0; 50 typedef int Platform3DObject; 51 const Platform3DObject NullPlatform3DObject = 0; 52 #endif 53 54 namespace WebCore { 55 class WebGLActiveInfo; 56 class WebGLArray; 57 class WebGLBuffer; 58 class WebGLUnsignedByteArray; 59 class WebGLFloatArray; 60 class WebGLFramebuffer; 61 class WebGLIntArray; 62 class WebGLProgram; 63 class WebGLRenderbuffer; 64 class WebGLRenderingContext; 65 class WebGLShader; 66 class WebGLTexture; 67 class Image; 68 69 struct ActiveInfo { 70 String name; 71 unsigned type; 72 int size; 73 }; 74 75 // FIXME: ideally this would be used on all platforms. 76 #if PLATFORM(CHROMIUM) 77 class GraphicsContext3DInternal; 78 #endif 79 80 class GraphicsContext3D : public Noncopyable { 81 public: 82 enum WebGLEnumType { 83 DEPTH_BUFFER_BIT = 0x00000100, 84 STENCIL_BUFFER_BIT = 0x00000400, 85 COLOR_BUFFER_BIT = 0x00004000, 86 POINTS = 0x0000, 87 LINES = 0x0001, 88 LINE_LOOP = 0x0002, 89 LINE_STRIP = 0x0003, 90 TRIANGLES = 0x0004, 91 TRIANGLE_STRIP = 0x0005, 92 TRIANGLE_FAN = 0x0006, 93 ZERO = 0, 94 ONE = 1, 95 SRC_COLOR = 0x0300, 96 ONE_MINUS_SRC_COLOR = 0x0301, 97 SRC_ALPHA = 0x0302, 98 ONE_MINUS_SRC_ALPHA = 0x0303, 99 DST_ALPHA = 0x0304, 100 ONE_MINUS_DST_ALPHA = 0x0305, 101 DST_COLOR = 0x0306, 102 ONE_MINUS_DST_COLOR = 0x0307, 103 SRC_ALPHA_SATURATE = 0x0308, 104 FUNC_ADD = 0x8006, 105 BLEND_EQUATION = 0x8009, 106 BLEND_EQUATION_RGB = 0x8009, 107 BLEND_EQUATION_ALPHA = 0x883D, 108 FUNC_SUBTRACT = 0x800A, 109 FUNC_REVERSE_SUBTRACT = 0x800B, 110 BLEND_DST_RGB = 0x80C8, 111 BLEND_SRC_RGB = 0x80C9, 112 BLEND_DST_ALPHA = 0x80CA, 113 BLEND_SRC_ALPHA = 0x80CB, 114 CONSTANT_COLOR = 0x8001, 115 ONE_MINUS_CONSTANT_COLOR = 0x8002, 116 CONSTANT_ALPHA = 0x8003, 117 ONE_MINUS_CONSTANT_ALPHA = 0x8004, 118 BLEND_COLOR = 0x8005, 119 ARRAY_BUFFER = 0x8892, 120 ELEMENT_ARRAY_BUFFER = 0x8893, 121 ARRAY_BUFFER_BINDING = 0x8894, 122 ELEMENT_ARRAY_BUFFER_BINDING = 0x8895, 123 STREAM_DRAW = 0x88E0, 124 STATIC_DRAW = 0x88E4, 125 DYNAMIC_DRAW = 0x88E8, 126 BUFFER_SIZE = 0x8764, 127 BUFFER_USAGE = 0x8765, 128 CURRENT_VERTEX_ATTRIB = 0x8626, 129 FRONT = 0x0404, 130 BACK = 0x0405, 131 FRONT_AND_BACK = 0x0408, 132 TEXTURE_2D = 0x0DE1, 133 CULL_FACE = 0x0B44, 134 BLEND = 0x0BE2, 135 DITHER = 0x0BD0, 136 STENCIL_TEST = 0x0B90, 137 DEPTH_TEST = 0x0B71, 138 SCISSOR_TEST = 0x0C11, 139 POLYGON_OFFSET_FILL = 0x8037, 140 SAMPLE_ALPHA_TO_COVERAGE = 0x809E, 141 SAMPLE_COVERAGE = 0x80A0, 142 NO_ERROR = 0, 143 INVALID_ENUM = 0x0500, 144 INVALID_VALUE = 0x0501, 145 INVALID_OPERATION = 0x0502, 146 OUT_OF_MEMORY = 0x0505, 147 CW = 0x0900, 148 CCW = 0x0901, 149 LINE_WIDTH = 0x0B21, 150 ALIASED_POINT_SIZE_RANGE = 0x846D, 151 ALIASED_LINE_WIDTH_RANGE = 0x846E, 152 CULL_FACE_MODE = 0x0B45, 153 FRONT_FACE = 0x0B46, 154 DEPTH_RANGE = 0x0B70, 155 DEPTH_WRITEMASK = 0x0B72, 156 DEPTH_CLEAR_VALUE = 0x0B73, 157 DEPTH_FUNC = 0x0B74, 158 STENCIL_CLEAR_VALUE = 0x0B91, 159 STENCIL_FUNC = 0x0B92, 160 STENCIL_FAIL = 0x0B94, 161 STENCIL_PASS_DEPTH_FAIL = 0x0B95, 162 STENCIL_PASS_DEPTH_PASS = 0x0B96, 163 STENCIL_REF = 0x0B97, 164 STENCIL_VALUE_MASK = 0x0B93, 165 STENCIL_WRITEMASK = 0x0B98, 166 STENCIL_BACK_FUNC = 0x8800, 167 STENCIL_BACK_FAIL = 0x8801, 168 STENCIL_BACK_PASS_DEPTH_FAIL = 0x8802, 169 STENCIL_BACK_PASS_DEPTH_PASS = 0x8803, 170 STENCIL_BACK_REF = 0x8CA3, 171 STENCIL_BACK_VALUE_MASK = 0x8CA4, 172 STENCIL_BACK_WRITEMASK = 0x8CA5, 173 VIEWPORT = 0x0BA2, 174 SCISSOR_BOX = 0x0C10, 175 COLOR_CLEAR_VALUE = 0x0C22, 176 COLOR_WRITEMASK = 0x0C23, 177 UNPACK_ALIGNMENT = 0x0CF5, 178 PACK_ALIGNMENT = 0x0D05, 179 MAX_TEXTURE_SIZE = 0x0D33, 180 MAX_VIEWPORT_DIMS = 0x0D3A, 181 SUBPIXEL_BITS = 0x0D50, 182 RED_BITS = 0x0D52, 183 GREEN_BITS = 0x0D53, 184 BLUE_BITS = 0x0D54, 185 ALPHA_BITS = 0x0D55, 186 DEPTH_BITS = 0x0D56, 187 STENCIL_BITS = 0x0D57, 188 POLYGON_OFFSET_UNITS = 0x2A00, 189 POLYGON_OFFSET_FACTOR = 0x8038, 190 TEXTURE_BINDING_2D = 0x8069, 191 SAMPLE_BUFFERS = 0x80A8, 192 SAMPLES = 0x80A9, 193 SAMPLE_COVERAGE_VALUE = 0x80AA, 194 SAMPLE_COVERAGE_INVERT = 0x80AB, 195 NUM_COMPRESSED_TEXTURE_FORMATS = 0x86A2, 196 COMPRESSED_TEXTURE_FORMATS = 0x86A3, 197 DONT_CARE = 0x1100, 198 FASTEST = 0x1101, 199 NICEST = 0x1102, 200 GENERATE_MIPMAP_HINT = 0x8192, 201 BYTE = 0x1400, 202 UNSIGNED_BYTE = 0x1401, 203 SHORT = 0x1402, 204 UNSIGNED_SHORT = 0x1403, 205 INT = 0x1404, 206 UNSIGNED_INT = 0x1405, 207 FLOAT = 0x1406, 208 FIXED = 0x140C, 209 DEPTH_COMPONENT = 0x1902, 210 ALPHA = 0x1906, 211 RGB = 0x1907, 212 RGBA = 0x1908, 213 LUMINANCE = 0x1909, 214 LUMINANCE_ALPHA = 0x190A, 215 UNSIGNED_SHORT_4_4_4_4 = 0x8033, 216 UNSIGNED_SHORT_5_5_5_1 = 0x8034, 217 UNSIGNED_SHORT_5_6_5 = 0x8363, 218 FRAGMENT_SHADER = 0x8B30, 219 VERTEX_SHADER = 0x8B31, 220 MAX_VERTEX_ATTRIBS = 0x8869, 221 MAX_VERTEX_UNIFORM_VECTORS = 0x8DFB, 222 MAX_VARYING_VECTORS = 0x8DFC, 223 MAX_COMBINED_TEXTURE_IMAGE_UNITS = 0x8B4D, 224 MAX_VERTEX_TEXTURE_IMAGE_UNITS = 0x8B4C, 225 MAX_TEXTURE_IMAGE_UNITS = 0x8872, 226 MAX_FRAGMENT_UNIFORM_VECTORS = 0x8DFD, 227 SHADER_TYPE = 0x8B4F, 228 DELETE_STATUS = 0x8B80, 229 LINK_STATUS = 0x8B82, 230 VALIDATE_STATUS = 0x8B83, 231 ATTACHED_SHADERS = 0x8B85, 232 ACTIVE_UNIFORMS = 0x8B86, 233 ACTIVE_UNIFORM_MAX_LENGTH = 0x8B87, 234 ACTIVE_ATTRIBUTES = 0x8B89, 235 ACTIVE_ATTRIBUTE_MAX_LENGTH = 0x8B8A, 236 SHADING_LANGUAGE_VERSION = 0x8B8C, 237 CURRENT_PROGRAM = 0x8B8D, 238 NEVER = 0x0200, 239 LESS = 0x0201, 240 EQUAL = 0x0202, 241 LEQUAL = 0x0203, 242 GREATER = 0x0204, 243 NOTEQUAL = 0x0205, 244 GEQUAL = 0x0206, 245 ALWAYS = 0x0207, 246 KEEP = 0x1E00, 247 REPLACE = 0x1E01, 248 INCR = 0x1E02, 249 DECR = 0x1E03, 250 INVERT = 0x150A, 251 INCR_WRAP = 0x8507, 252 DECR_WRAP = 0x8508, 253 VENDOR = 0x1F00, 254 RENDERER = 0x1F01, 255 VERSION = 0x1F02, 256 EXTENSIONS = 0x1F03, 257 NEAREST = 0x2600, 258 LINEAR = 0x2601, 259 NEAREST_MIPMAP_NEAREST = 0x2700, 260 LINEAR_MIPMAP_NEAREST = 0x2701, 261 NEAREST_MIPMAP_LINEAR = 0x2702, 262 LINEAR_MIPMAP_LINEAR = 0x2703, 263 TEXTURE_MAG_FILTER = 0x2800, 264 TEXTURE_MIN_FILTER = 0x2801, 265 TEXTURE_WRAP_S = 0x2802, 266 TEXTURE_WRAP_T = 0x2803, 267 TEXTURE = 0x1702, 268 TEXTURE_CUBE_MAP = 0x8513, 269 TEXTURE_BINDING_CUBE_MAP = 0x8514, 270 TEXTURE_CUBE_MAP_POSITIVE_X = 0x8515, 271 TEXTURE_CUBE_MAP_NEGATIVE_X = 0x8516, 272 TEXTURE_CUBE_MAP_POSITIVE_Y = 0x8517, 273 TEXTURE_CUBE_MAP_NEGATIVE_Y = 0x8518, 274 TEXTURE_CUBE_MAP_POSITIVE_Z = 0x8519, 275 TEXTURE_CUBE_MAP_NEGATIVE_Z = 0x851A, 276 MAX_CUBE_MAP_TEXTURE_SIZE = 0x851C, 277 TEXTURE0 = 0x84C0, 278 TEXTURE1 = 0x84C1, 279 TEXTURE2 = 0x84C2, 280 TEXTURE3 = 0x84C3, 281 TEXTURE4 = 0x84C4, 282 TEXTURE5 = 0x84C5, 283 TEXTURE6 = 0x84C6, 284 TEXTURE7 = 0x84C7, 285 TEXTURE8 = 0x84C8, 286 TEXTURE9 = 0x84C9, 287 TEXTURE10 = 0x84CA, 288 TEXTURE11 = 0x84CB, 289 TEXTURE12 = 0x84CC, 290 TEXTURE13 = 0x84CD, 291 TEXTURE14 = 0x84CE, 292 TEXTURE15 = 0x84CF, 293 TEXTURE16 = 0x84D0, 294 TEXTURE17 = 0x84D1, 295 TEXTURE18 = 0x84D2, 296 TEXTURE19 = 0x84D3, 297 TEXTURE20 = 0x84D4, 298 TEXTURE21 = 0x84D5, 299 TEXTURE22 = 0x84D6, 300 TEXTURE23 = 0x84D7, 301 TEXTURE24 = 0x84D8, 302 TEXTURE25 = 0x84D9, 303 TEXTURE26 = 0x84DA, 304 TEXTURE27 = 0x84DB, 305 TEXTURE28 = 0x84DC, 306 TEXTURE29 = 0x84DD, 307 TEXTURE30 = 0x84DE, 308 TEXTURE31 = 0x84DF, 309 ACTIVE_TEXTURE = 0x84E0, 310 REPEAT = 0x2901, 311 CLAMP_TO_EDGE = 0x812F, 312 MIRRORED_REPEAT = 0x8370, 313 FLOAT_VEC2 = 0x8B50, 314 FLOAT_VEC3 = 0x8B51, 315 FLOAT_VEC4 = 0x8B52, 316 INT_VEC2 = 0x8B53, 317 INT_VEC3 = 0x8B54, 318 INT_VEC4 = 0x8B55, 319 BOOL = 0x8B56, 320 BOOL_VEC2 = 0x8B57, 321 BOOL_VEC3 = 0x8B58, 322 BOOL_VEC4 = 0x8B59, 323 FLOAT_MAT2 = 0x8B5A, 324 FLOAT_MAT3 = 0x8B5B, 325 FLOAT_MAT4 = 0x8B5C, 326 SAMPLER_2D = 0x8B5E, 327 SAMPLER_CUBE = 0x8B60, 328 VERTEX_ATTRIB_ARRAY_ENABLED = 0x8622, 329 VERTEX_ATTRIB_ARRAY_SIZE = 0x8623, 330 VERTEX_ATTRIB_ARRAY_STRIDE = 0x8624, 331 VERTEX_ATTRIB_ARRAY_TYPE = 0x8625, 332 VERTEX_ATTRIB_ARRAY_NORMALIZED = 0x886A, 333 VERTEX_ATTRIB_ARRAY_POINTER = 0x8645, 334 VERTEX_ATTRIB_ARRAY_BUFFER_BINDING = 0x889F, 335 IMPLEMENTATION_COLOR_READ_TYPE = 0x8B9A, 336 IMPLEMENTATION_COLOR_READ_FORMAT = 0x8B9B, 337 COMPILE_STATUS = 0x8B81, 338 INFO_LOG_LENGTH = 0x8B84, 339 SHADER_SOURCE_LENGTH = 0x8B88, 340 SHADER_COMPILER = 0x8DFA, 341 SHADER_BINARY_FORMATS = 0x8DF8, 342 NUM_SHADER_BINARY_FORMATS = 0x8DF9, 343 LOW_FLOAT = 0x8DF0, 344 MEDIUM_FLOAT = 0x8DF1, 345 HIGH_FLOAT = 0x8DF2, 346 LOW_INT = 0x8DF3, 347 MEDIUM_INT = 0x8DF4, 348 HIGH_INT = 0x8DF5, 349 FRAMEBUFFER = 0x8D40, 350 RENDERBUFFER = 0x8D41, 351 RGBA4 = 0x8056, 352 RGB5_A1 = 0x8057, 353 RGB565 = 0x8D62, 354 DEPTH_COMPONENT16 = 0x81A5, 355 STENCIL_INDEX = 0x1901, 356 STENCIL_INDEX8 = 0x8D48, 357 RENDERBUFFER_WIDTH = 0x8D42, 358 RENDERBUFFER_HEIGHT = 0x8D43, 359 RENDERBUFFER_INTERNAL_FORMAT = 0x8D44, 360 RENDERBUFFER_RED_SIZE = 0x8D50, 361 RENDERBUFFER_GREEN_SIZE = 0x8D51, 362 RENDERBUFFER_BLUE_SIZE = 0x8D52, 363 RENDERBUFFER_ALPHA_SIZE = 0x8D53, 364 RENDERBUFFER_DEPTH_SIZE = 0x8D54, 365 RENDERBUFFER_STENCIL_SIZE = 0x8D55, 366 FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE = 0x8CD0, 367 FRAMEBUFFER_ATTACHMENT_OBJECT_NAME = 0x8CD1, 368 FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL = 0x8CD2, 369 FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE = 0x8CD3, 370 COLOR_ATTACHMENT0 = 0x8CE0, 371 DEPTH_ATTACHMENT = 0x8D00, 372 STENCIL_ATTACHMENT = 0x8D20, 373 NONE = 0, 374 FRAMEBUFFER_COMPLETE = 0x8CD5, 375 FRAMEBUFFER_INCOMPLETE_ATTACHMENT = 0x8CD6, 376 FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = 0x8CD7, 377 FRAMEBUFFER_INCOMPLETE_DIMENSIONS = 0x8CD9, 378 FRAMEBUFFER_UNSUPPORTED = 0x8CDD, 379 FRAMEBUFFER_BINDING = 0x8CA6, 380 RENDERBUFFER_BINDING = 0x8CA7, 381 MAX_RENDERBUFFER_SIZE = 0x84E8, 382 INVALID_FRAMEBUFFER_OPERATION = 0x0506 383 }; 384 385 // Context creation attributes. 386 struct Attributes { 387 Attributes() 388 : alpha(true) 389 , depth(true) 390 , stencil(true) 391 , antialias(true) 392 , premultipliedAlpha(true) 393 { 394 } 395 396 bool alpha; 397 bool depth; 398 bool stencil; 399 bool antialias; 400 bool premultipliedAlpha; 401 }; 402 403 static PassOwnPtr<GraphicsContext3D> create(Attributes attrs); 404 virtual ~GraphicsContext3D(); 405 406 #if PLATFORM(MAC) 407 PlatformGraphicsContext3D platformGraphicsContext3D() const { return m_contextObj; } 408 Platform3DObject platformTexture() const { return m_texture; } 409 #elif PLATFORM(CHROMIUM) 410 PlatformGraphicsContext3D platformGraphicsContext3D() const; 411 Platform3DObject platformTexture() const; 412 #else 413 PlatformGraphicsContext3D platformGraphicsContext3D() const { return NullPlatformGraphicsContext3D; } 414 Platform3DObject platformTexture() const { return NullPlatform3DObject; } 415 #endif 416 void makeContextCurrent(); 417 418 // Helper to return the size in bytes of OpenGL data types 419 // like GL_FLOAT, GL_INT, etc. 420 int sizeInBytes(int type); 421 422 void activeTexture(unsigned long texture); 423 void attachShader(WebGLProgram* program, WebGLShader* shader); 424 void bindAttribLocation(WebGLProgram*, unsigned long index, const String& name); 425 void bindBuffer(unsigned long target, WebGLBuffer*); 426 void bindFramebuffer(unsigned long target, WebGLFramebuffer*); 427 void bindRenderbuffer(unsigned long target, WebGLRenderbuffer*); 428 void bindTexture(unsigned long target, WebGLTexture* texture); 429 void blendColor(double red, double green, double blue, double alpha); 430 void blendEquation(unsigned long mode); 431 void blendEquationSeparate(unsigned long modeRGB, unsigned long modeAlpha); 432 void blendFunc(unsigned long sfactor, unsigned long dfactor); 433 void blendFuncSeparate(unsigned long srcRGB, unsigned long dstRGB, unsigned long srcAlpha, unsigned long dstAlpha); 434 435 void bufferData(unsigned long target, int size, unsigned long usage); 436 void bufferData(unsigned long target, WebGLArray* data, unsigned long usage); 437 void bufferSubData(unsigned long target, long offset, WebGLArray* data); 438 439 unsigned long checkFramebufferStatus(unsigned long target); 440 void clear(unsigned long mask); 441 void clearColor(double red, double green, double blue, double alpha); 442 void clearDepth(double depth); 443 void clearStencil(long s); 444 void colorMask(bool red, bool green, bool blue, bool alpha); 445 void compileShader(WebGLShader*); 446 447 //void compressedTexImage2D(unsigned long target, long level, unsigned long internalformat, unsigned long width, unsigned long height, long border, unsigned long imageSize, const void* data); 448 //void compressedTexSubImage2D(unsigned long target, long level, long xoffset, long yoffset, unsigned long width, unsigned long height, unsigned long format, unsigned long imageSize, const void* data); 449 450 void copyTexImage2D(unsigned long target, long level, unsigned long internalformat, long x, long y, unsigned long width, unsigned long height, long border); 451 void copyTexSubImage2D(unsigned long target, long level, long xoffset, long yoffset, long x, long y, unsigned long width, unsigned long height); 452 void cullFace(unsigned long mode); 453 void depthFunc(unsigned long func); 454 void depthMask(bool flag); 455 void depthRange(double zNear, double zFar); 456 void detachShader(WebGLProgram*, WebGLShader*); 457 void disable(unsigned long cap); 458 void disableVertexAttribArray(unsigned long index); 459 void drawArrays(unsigned long mode, long first, long count); 460 void drawElements(unsigned long mode, unsigned long count, unsigned long type, long offset); 461 462 void enable(unsigned long cap); 463 void enableVertexAttribArray(unsigned long index); 464 void finish(); 465 void flush(); 466 void framebufferRenderbuffer(unsigned long target, unsigned long attachment, unsigned long renderbuffertarget, WebGLRenderbuffer*); 467 void framebufferTexture2D(unsigned long target, unsigned long attachment, unsigned long textarget, WebGLTexture*, long level); 468 void frontFace(unsigned long mode); 469 void generateMipmap(unsigned long target); 470 471 bool getActiveAttrib(WebGLProgram* program, unsigned long index, ActiveInfo&); 472 bool getActiveUniform(WebGLProgram* program, unsigned long index, ActiveInfo&); 473 474 int getAttribLocation(WebGLProgram*, const String& name); 475 476 void getBooleanv(unsigned long pname, unsigned char* value); 477 478 void getBufferParameteriv(unsigned long target, unsigned long pname, int* value); 479 480 Attributes getContextAttributes(); 481 482 unsigned long getError(); 483 484 void getFloatv(unsigned long pname, float* value); 485 486 void getFramebufferAttachmentParameteriv(unsigned long target, unsigned long attachment, unsigned long pname, int* value); 487 488 void getIntegerv(unsigned long pname, int* value); 489 490 void getProgramiv(WebGLProgram* program, unsigned long pname, int* value); 491 492 String getProgramInfoLog(WebGLProgram*); 493 494 void getRenderbufferParameteriv(unsigned long target, unsigned long pname, int* value); 495 496 void getShaderiv(WebGLShader*, unsigned long pname, int* value); 497 498 String getShaderInfoLog(WebGLShader*); 499 500 // TBD 501 // void glGetShaderPrecisionFormat (GLenum shadertype, GLenum precisiontype, GLint* range, GLint* precision); 502 503 String getShaderSource(WebGLShader*); 504 String getString(unsigned long name); 505 506 void getTexParameterfv(unsigned long target, unsigned long pname, float* value); 507 void getTexParameteriv(unsigned long target, unsigned long pname, int* value); 508 509 void getUniformfv(WebGLProgram* program, long location, float* value); 510 void getUniformiv(WebGLProgram* program, long location, int* value); 511 512 long getUniformLocation(WebGLProgram*, const String& name); 513 514 void getVertexAttribfv(unsigned long index, unsigned long pname, float* value); 515 void getVertexAttribiv(unsigned long index, unsigned long pname, int* value); 516 517 long getVertexAttribOffset(unsigned long index, unsigned long pname); 518 519 void hint(unsigned long target, unsigned long mode); 520 bool isBuffer(WebGLBuffer*); 521 bool isEnabled(unsigned long cap); 522 bool isFramebuffer(WebGLFramebuffer*); 523 bool isProgram(WebGLProgram*); 524 bool isRenderbuffer(WebGLRenderbuffer*); 525 bool isShader(WebGLShader*); 526 bool isTexture(WebGLTexture*); 527 void lineWidth(double); 528 void linkProgram(WebGLProgram*); 529 void pixelStorei(unsigned long pname, long param); 530 void polygonOffset(double factor, double units); 531 532 PassRefPtr<WebGLArray> readPixels(long x, long y, unsigned long width, unsigned long height, unsigned long format, unsigned long type); 533 534 void releaseShaderCompiler(); 535 void renderbufferStorage(unsigned long target, unsigned long internalformat, unsigned long width, unsigned long height); 536 void sampleCoverage(double value, bool invert); 537 void scissor(long x, long y, unsigned long width, unsigned long height); 538 void shaderSource(WebGLShader*, const String& string); 539 void stencilFunc(unsigned long func, long ref, unsigned long mask); 540 void stencilFuncSeparate(unsigned long face, unsigned long func, long ref, unsigned long mask); 541 void stencilMask(unsigned long mask); 542 void stencilMaskSeparate(unsigned long face, unsigned long mask); 543 void stencilOp(unsigned long fail, unsigned long zfail, unsigned long zpass); 544 void stencilOpSeparate(unsigned long face, unsigned long fail, unsigned long zfail, unsigned long zpass); 545 546 // These next several functions return an error code (0 if no errors) rather than using an ExceptionCode. 547 // Currently they return -1 on any error. 548 int texImage2D(unsigned target, unsigned level, unsigned internalformat, unsigned width, unsigned height, unsigned border, unsigned format, unsigned type, void* pixels); 549 int texImage2D(unsigned target, unsigned level, Image* image, bool flipY, bool premultiplyAlpha); 550 551 void texParameterf(unsigned target, unsigned pname, float param); 552 void texParameteri(unsigned target, unsigned pname, int param); 553 554 int texSubImage2D(unsigned target, unsigned level, unsigned xoffset, unsigned yoffset, unsigned width, unsigned height, unsigned format, unsigned type, void* pixels); 555 int texSubImage2D(unsigned target, unsigned level, unsigned xoffset, unsigned yoffset, Image* image, bool flipY, bool premultiplyAlpha); 556 557 void uniform1f(long location, float x); 558 void uniform1fv(long location, float* v, int size); 559 void uniform1i(long location, int x); 560 void uniform1iv(long location, int* v, int size); 561 void uniform2f(long location, float x, float y); 562 void uniform2fv(long location, float* v, int size); 563 void uniform2i(long location, int x, int y); 564 void uniform2iv(long location, int* v, int size); 565 void uniform3f(long location, float x, float y, float z); 566 void uniform3fv(long location, float* v, int size); 567 void uniform3i(long location, int x, int y, int z); 568 void uniform3iv(long location, int* v, int size); 569 void uniform4f(long location, float x, float y, float z, float w); 570 void uniform4fv(long location, float* v, int size); 571 void uniform4i(long location, int x, int y, int z, int w); 572 void uniform4iv(long location, int* v, int size); 573 void uniformMatrix2fv(long location, bool transpose, float* value, int size); 574 void uniformMatrix3fv(long location, bool transpose, float* value, int size); 575 void uniformMatrix4fv(long location, bool transpose, float* value, int size); 576 577 void useProgram(WebGLProgram*); 578 void validateProgram(WebGLProgram*); 579 580 void vertexAttrib1f(unsigned long indx, float x); 581 void vertexAttrib1fv(unsigned long indx, float* values); 582 void vertexAttrib2f(unsigned long indx, float x, float y); 583 void vertexAttrib2fv(unsigned long indx, float* values); 584 void vertexAttrib3f(unsigned long indx, float x, float y, float z); 585 void vertexAttrib3fv(unsigned long indx, float* values); 586 void vertexAttrib4f(unsigned long indx, float x, float y, float z, float w); 587 void vertexAttrib4fv(unsigned long indx, float* values); 588 void vertexAttribPointer(unsigned long indx, int size, int type, bool normalized, 589 unsigned long stride, unsigned long offset); 590 591 void viewport(long x, long y, unsigned long width, unsigned long height); 592 593 void reshape(int width, int height); 594 595 // Helpers for notification about paint events 596 void beginPaint(WebGLRenderingContext* context); 597 void endPaint(); 598 599 // Support for buffer creation and deletion 600 unsigned createBuffer(); 601 unsigned createFramebuffer(); 602 unsigned createProgram(); 603 unsigned createRenderbuffer(); 604 unsigned createShader(unsigned long); 605 unsigned createTexture(); 606 607 void deleteBuffer(unsigned); 608 void deleteFramebuffer(unsigned); 609 void deleteProgram(unsigned); 610 void deleteRenderbuffer(unsigned); 611 void deleteShader(unsigned); 612 void deleteTexture(unsigned); 613 614 // Synthesizes an OpenGL error which will be returned from a 615 // later call to getError. This is used to emulate OpenGL ES 616 // 2.0 behavior on the desktop and to enforce additional error 617 // checking mandated by WebGL. 618 // 619 // Per the behavior of glGetError, this stores at most one 620 // instance of any given error, and returns them from calls to 621 // getError in the order they were added. 622 void synthesizeGLError(unsigned long error); 623 624 private: 625 GraphicsContext3D(Attributes attrs); 626 627 int m_currentWidth, m_currentHeight; 628 629 #if PLATFORM(MAC) 630 Attributes m_attrs; 631 Vector<Vector<float> > m_vertexArray; 632 633 CGLContextObj m_contextObj; 634 GLuint m_texture; 635 GLuint m_fbo; 636 GLuint m_depthBuffer; 637 // Errors raised by synthesizeGLError(). 638 ListHashSet<unsigned long> m_syntheticErrors; 639 #endif 640 641 // FIXME: ideally this would be used on all platforms. 642 #if PLATFORM(CHROMIUM) 643 friend class GraphicsContext3DInternal; 644 OwnPtr<GraphicsContext3DInternal> m_internal; 645 #endif 646 }; 647 648 } // namespace WebCore 649 650 #endif // GraphicsContext3D_h 651
