1 /* 2 * Copyright (C) 2011 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 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef Extensions3D_h 27 #define Extensions3D_h 28 29 #include "platform/PlatformExport.h" 30 #include "platform/graphics/GraphicsTypes3D.h" 31 32 #include "wtf/text/WTFString.h" 33 34 namespace WebCore { 35 36 class GraphicsContext3D; 37 class ImageBuffer; 38 39 // The supported extensions are defined below. 40 // 41 // Calling any extension function not supported by the current context 42 // must be a no-op; in particular, it may not have side effects. In 43 // this situation, if the function has a return value, 0 is returned. 44 class PLATFORM_EXPORT Extensions3D { 45 public: 46 ~Extensions3D(); 47 48 // Supported extensions: 49 // GL_EXT_texture_format_BGRA8888 50 // GL_EXT_read_format_bgra 51 // GL_ARB_robustness 52 // GL_ARB_texture_non_power_of_two / GL_OES_texture_npot 53 // GL_EXT_packed_depth_stencil / GL_OES_packed_depth_stencil 54 // GL_ANGLE_framebuffer_blit / GL_ANGLE_framebuffer_multisample 55 // GL_OES_texture_float 56 // GL_OES_texture_float_linear 57 // GL_OES_texture_half_float 58 // GL_OES_texture_half_float_linear 59 // GL_OES_standard_derivatives 60 // GL_OES_rgb8_rgba8 61 // GL_OES_vertex_array_object 62 // GL_OES_element_index_uint 63 // GL_ANGLE_translated_shader_source 64 // GL_ARB_texture_rectangle (only the subset required to 65 // implement IOSurface binding; it's recommended to support 66 // this only on Mac OS X to limit the amount of code dependent 67 // on this extension) 68 // GL_EXT_texture_compression_dxt1 69 // GL_EXT_texture_compression_s3tc 70 // GL_OES_compressed_ETC1_RGB8_texture 71 // GL_IMG_texture_compression_pvrtc 72 // EXT_texture_filter_anisotropic 73 // GL_EXT_debug_marker 74 // GL_CHROMIUM_copy_texture 75 // GL_CHROMIUM_flipy 76 // GL_ARB_draw_buffers / GL_EXT_draw_buffers 77 // GL_ANGLE_instanced_arrays 78 79 // GL_CHROMIUM_shallow_flush : only supported if an ipc command buffer is used. 80 // GL_CHROMIUM_resource_safe : indicating that textures/renderbuffers are always initialized before read/write. 81 // GL_CHROMIUM_strict_attribs : indicating a GL error is generated for out-of-bounds buffer accesses. 82 // GL_CHROMIUM_post_sub_buffer 83 // GL_CHROMIUM_map_sub 84 // GL_CHROMIUM_swapbuffers_complete_callback 85 // GL_CHROMIUM_rate_limit_offscreen_context 86 // GL_CHROMIUM_paint_framebuffer_canvas 87 // GL_CHROMIUM_iosurface (Mac OS X specific) 88 // GL_CHROMIUM_command_buffer_query 89 // GL_ANGLE_texture_usage 90 // GL_EXT_debug_marker 91 // GL_EXT_texture_storage 92 // GL_EXT_occlusion_query_boolean 93 94 // Takes full name of extension; for example, 95 // "GL_EXT_texture_format_BGRA8888". 96 bool supports(const String&); 97 98 // Certain OpenGL and WebGL implementations may support enabling 99 // extensions lazily. This method may only be called with 100 // extension names for which supports returns true. 101 void ensureEnabled(const String&); 102 103 // Takes full name of extension: for example, "GL_EXT_texture_format_BGRA8888". 104 // Checks to see whether the given extension is actually enabled (see ensureEnabled). 105 // Has no other side-effects. 106 bool isEnabled(const String&); 107 108 enum ExtensionsEnumType { 109 // GL_EXT_texture_format_BGRA8888 enums 110 BGRA_EXT = 0x80E1, 111 112 // GL_ARB_robustness/GL_CHROMIUM_lose_context enums 113 GUILTY_CONTEXT_RESET_ARB = 0x8253, 114 INNOCENT_CONTEXT_RESET_ARB = 0x8254, 115 UNKNOWN_CONTEXT_RESET_ARB = 0x8255, 116 117 // GL_EXT/OES_packed_depth_stencil enums 118 DEPTH24_STENCIL8 = 0x88F0, 119 120 // GL_ANGLE_framebuffer_blit names 121 READ_FRAMEBUFFER = 0x8CA8, 122 DRAW_FRAMEBUFFER = 0x8CA9, 123 DRAW_FRAMEBUFFER_BINDING = 0x8CA6, 124 READ_FRAMEBUFFER_BINDING = 0x8CAA, 125 126 // GL_ANGLE_framebuffer_multisample names 127 RENDERBUFFER_SAMPLES = 0x8CAB, 128 FRAMEBUFFER_INCOMPLETE_MULTISAMPLE = 0x8D56, 129 MAX_SAMPLES = 0x8D57, 130 131 // GL_OES_standard_derivatives names 132 FRAGMENT_SHADER_DERIVATIVE_HINT_OES = 0x8B8B, 133 134 // GL_OES_rgb8_rgba8 names 135 RGB8_OES = 0x8051, 136 RGBA8_OES = 0x8058, 137 138 // GL_OES_vertex_array_object names 139 VERTEX_ARRAY_BINDING_OES = 0x85B5, 140 141 // GL_ANGLE_translated_shader_source 142 TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE = 0x93A0, 143 144 // GL_ARB_texture_rectangle 145 TEXTURE_RECTANGLE_ARB = 0x84F5, 146 TEXTURE_BINDING_RECTANGLE_ARB = 0x84F6, 147 148 // GL_EXT_texture_compression_dxt1 149 // GL_EXT_texture_compression_s3tc 150 COMPRESSED_RGB_S3TC_DXT1_EXT = 0x83F0, 151 COMPRESSED_RGBA_S3TC_DXT1_EXT = 0x83F1, 152 COMPRESSED_RGBA_S3TC_DXT3_EXT = 0x83F2, 153 COMPRESSED_RGBA_S3TC_DXT5_EXT = 0x83F3, 154 155 // GL_OES_compressed_ETC1_RGB8_texture 156 ETC1_RGB8_OES = 0x8D64, 157 158 // GL_IMG_texture_compression_pvrtc 159 COMPRESSED_RGB_PVRTC_4BPPV1_IMG = 0x8C00, 160 COMPRESSED_RGB_PVRTC_2BPPV1_IMG = 0x8C01, 161 COMPRESSED_RGBA_PVRTC_4BPPV1_IMG = 0x8C02, 162 COMPRESSED_RGBA_PVRTC_2BPPV1_IMG = 0x8C03, 163 164 // GL_AMD_compressed_ATC_texture 165 COMPRESSED_ATC_RGB_AMD = 0x8C92, 166 COMPRESSED_ATC_RGBA_EXPLICIT_ALPHA_AMD = 0x8C93, 167 COMPRESSED_ATC_RGBA_INTERPOLATED_ALPHA_AMD = 0x87EE, 168 169 // GL_EXT_texture_filter_anisotropic 170 TEXTURE_MAX_ANISOTROPY_EXT = 0x84FE, 171 MAX_TEXTURE_MAX_ANISOTROPY_EXT = 0x84FF, 172 173 // GL_CHROMIUM_flipy 174 UNPACK_FLIP_Y_CHROMIUM = 0x9240, 175 176 // GL_CHROMIUM_copy_texture 177 UNPACK_PREMULTIPLY_ALPHA_CHROMIUM = 0x9241, 178 UNPACK_UNPREMULTIPLY_ALPHA_CHROMIUM = 0x9242, 179 180 // GL_ARB_draw_buffers / GL_EXT_draw_buffers 181 MAX_DRAW_BUFFERS_EXT = 0x8824, 182 DRAW_BUFFER0_EXT = 0x8825, 183 DRAW_BUFFER1_EXT = 0x8826, 184 DRAW_BUFFER2_EXT = 0x8827, 185 DRAW_BUFFER3_EXT = 0x8828, 186 DRAW_BUFFER4_EXT = 0x8829, 187 DRAW_BUFFER5_EXT = 0x882A, 188 DRAW_BUFFER6_EXT = 0x882B, 189 DRAW_BUFFER7_EXT = 0x882C, 190 DRAW_BUFFER8_EXT = 0x882D, 191 DRAW_BUFFER9_EXT = 0x882E, 192 DRAW_BUFFER10_EXT = 0x882F, 193 DRAW_BUFFER11_EXT = 0x8830, 194 DRAW_BUFFER12_EXT = 0x8831, 195 DRAW_BUFFER13_EXT = 0x8832, 196 DRAW_BUFFER14_EXT = 0x8833, 197 DRAW_BUFFER15_EXT = 0x8834, 198 MAX_COLOR_ATTACHMENTS_EXT = 0x8CDF, 199 COLOR_ATTACHMENT0_EXT = 0x8CE0, 200 COLOR_ATTACHMENT1_EXT = 0x8CE1, 201 COLOR_ATTACHMENT2_EXT = 0x8CE2, 202 COLOR_ATTACHMENT3_EXT = 0x8CE3, 203 COLOR_ATTACHMENT4_EXT = 0x8CE4, 204 COLOR_ATTACHMENT5_EXT = 0x8CE5, 205 COLOR_ATTACHMENT6_EXT = 0x8CE6, 206 COLOR_ATTACHMENT7_EXT = 0x8CE7, 207 COLOR_ATTACHMENT8_EXT = 0x8CE8, 208 COLOR_ATTACHMENT9_EXT = 0x8CE9, 209 COLOR_ATTACHMENT10_EXT = 0x8CEA, 210 COLOR_ATTACHMENT11_EXT = 0x8CEB, 211 COLOR_ATTACHMENT12_EXT = 0x8CEC, 212 COLOR_ATTACHMENT13_EXT = 0x8CED, 213 COLOR_ATTACHMENT14_EXT = 0x8CEE, 214 COLOR_ATTACHMENT15_EXT = 0x8CEF, 215 216 // GL_CHROMIUM_map_sub (enums inherited from GL_ARB_vertex_buffer_object) 217 READ_ONLY = 0x88B8, 218 WRITE_ONLY = 0x88B9, 219 220 // GL_EXT_texture_storage 221 BGRA8_EXT = 0x93A1, 222 223 // GL_EXT_occlusion_query_boolean 224 ANY_SAMPLES_PASSED_EXT = 0x8C2F, 225 ANY_SAMPLES_PASSED_CONSERVATIVE_EXT = 0x8D6A, 226 CURRENT_QUERY_EXT = 0x8865, 227 QUERY_RESULT_EXT = 0x8866, 228 QUERY_RESULT_AVAILABLE_EXT = 0x8867, 229 230 // GL_CHROMIUM_command_buffer_query 231 COMMANDS_ISSUED_CHROMIUM = 0x84F2, 232 233 // GL_ANGLE_instanced_arrays 234 VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE = 0x88FE 235 }; 236 237 // GL_ARB_robustness 238 // Note: This method's behavior differs from the GL_ARB_robustness 239 // specification in the following way: 240 // The implementation must not reset the error state during this call. 241 // If getGraphicsResetStatusARB returns an error, it should continue 242 // returning the same error. Restoring the GraphicsContext3D is handled 243 // externally. 244 int getGraphicsResetStatusARB(); 245 246 // GL_ANGLE_framebuffer_blit 247 void blitFramebuffer(long srcX0, long srcY0, long srcX1, long srcY1, long dstX0, long dstY0, long dstX1, long dstY1, unsigned long mask, unsigned long filter); 248 249 // GL_ANGLE_framebuffer_multisample 250 void renderbufferStorageMultisample(unsigned long target, unsigned long samples, unsigned long internalformat, unsigned long width, unsigned long height); 251 252 // GL_OES_vertex_array_object 253 Platform3DObject createVertexArrayOES(); 254 void deleteVertexArrayOES(Platform3DObject); 255 GC3Dboolean isVertexArrayOES(Platform3DObject); 256 void bindVertexArrayOES(Platform3DObject); 257 258 // GL_ANGLE_translated_shader_source 259 String getTranslatedShaderSourceANGLE(Platform3DObject); 260 261 // GL_CHROMIUM_copy_texture 262 // canUseCopyTextureCHROMIUM(...) is used to check if copyTextureCHROMIUM(...) can work for the specified 263 // format, type and level for the destination texture. 264 bool canUseCopyTextureCHROMIUM(GC3Denum destFormat, GC3Denum destType, GC3Dint level); 265 void copyTextureCHROMIUM(GC3Denum, Platform3DObject, Platform3DObject, GC3Dint, GC3Denum, GC3Denum); 266 267 // GL_EXT_debug_marker 268 void insertEventMarkerEXT(const String&); 269 void pushGroupMarkerEXT(const String&); 270 void popGroupMarkerEXT(void); 271 272 // GL_ARB_draw_buffers / GL_EXT_draw_buffers 273 void drawBuffersEXT(GC3Dsizei n, const GC3Denum* bufs); 274 275 // GL_CHROMIUM_map_sub 276 void* mapBufferSubDataCHROMIUM(unsigned target, int offset, int size, unsigned access); 277 void unmapBufferSubDataCHROMIUM(const void*); 278 void* mapTexSubImage2DCHROMIUM(unsigned target, int level, int xoffset, int yoffset, int width, int height, unsigned format, unsigned type, unsigned access); 279 void unmapTexSubImage2DCHROMIUM(const void*); 280 281 // GL_CHROMIUM_rate_limit_offscreen_context 282 void rateLimitOffscreenContextCHROMIUM(); 283 284 // GL_CHROMIUM_paint_framebuffer_canvas 285 void paintFramebufferToCanvas(int framebuffer, int width, int height, bool premultiplyAlpha, ImageBuffer*); 286 287 // GL_CHROMIUM_iosurface 288 // To avoid needing to expose extraneous enums, assumes internal format 289 // RGBA, format BGRA, and type UNSIGNED_INT_8_8_8_8_REV. 290 void texImageIOSurface2DCHROMIUM(unsigned target, int width, int height, uint32_t ioSurfaceId, unsigned plane); 291 292 // GL_EXT_texture_storage 293 void texStorage2DEXT(unsigned target, int levels, unsigned internalformat, int width, int height); 294 295 // GL_EXT_occlusion_query 296 Platform3DObject createQueryEXT(); 297 void deleteQueryEXT(Platform3DObject); 298 GC3Dboolean isQueryEXT(Platform3DObject); 299 void beginQueryEXT(GC3Denum, Platform3DObject); 300 void endQueryEXT(GC3Denum); 301 void getQueryivEXT(GC3Denum, GC3Denum, GC3Dint*); 302 void getQueryObjectuivEXT(Platform3DObject, GC3Denum, GC3Duint*); 303 304 // GL_CHROMIUM_shallow_flush 305 void shallowFlushCHROMIUM(); 306 307 // GL_ANGLE_instanced_arrays 308 void drawArraysInstancedANGLE(GC3Denum mode, GC3Dint first, GC3Dsizei count, GC3Dsizei primcount); 309 void drawElementsInstancedANGLE(GC3Denum mode, GC3Dsizei count, GC3Denum type, GC3Dintptr offset, GC3Dsizei primcount); 310 void vertexAttribDivisorANGLE(GC3Duint index, GC3Duint divisor); 311 312 // GL_CHROMIUM_lose_context 313 void loseContextCHROMIUM(GC3Denum, GC3Denum); 314 315 private: 316 // Instances of this class are strictly owned by the GraphicsContext3D implementation and do not 317 // need to be instantiated by any other code. 318 friend class GraphicsContext3D; 319 explicit Extensions3D(GraphicsContext3D*); 320 321 // Weak pointer back to GraphicsContext3D. 322 GraphicsContext3D* m_context; 323 }; 324 325 } // namespace WebCore 326 327 #endif // Extensions3D_h 328