1 // Copyright 2016 The SwiftShader Authors. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 // Context.h: Defines the Context class, managing all GL state and performing 16 // rendering operations. It is the GLES2 specific implementation of EGLContext. 17 18 #ifndef LIBGLESV2_CONTEXT_H_ 19 #define LIBGLESV2_CONTEXT_H_ 20 21 #include "ResourceManager.h" 22 #include "Buffer.h" 23 #include "libEGL/Context.hpp" 24 #include "common/NameSpace.hpp" 25 #include "common/Object.hpp" 26 #include "common/Image.hpp" 27 #include "Renderer/Sampler.hpp" 28 29 #include <GLES2/gl2.h> 30 #include <GLES2/gl2ext.h> 31 #include <GLES3/gl3.h> 32 #include <EGL/egl.h> 33 34 #include <map> 35 #include <string> 36 37 namespace egl 38 { 39 class Display; 40 class Config; 41 } 42 43 namespace es2 44 { 45 struct TranslatedAttribute; 46 struct TranslatedIndexData; 47 48 class Device; 49 class Shader; 50 class Program; 51 class Texture; 52 class Texture2D; 53 class Texture3D; 54 class Texture2DArray; 55 class TextureCubeMap; 56 class Texture2DRect; 57 class TextureExternal; 58 class Framebuffer; 59 class Renderbuffer; 60 class RenderbufferStorage; 61 class Colorbuffer; 62 class Depthbuffer; 63 class StreamingIndexBuffer; 64 class Stencilbuffer; 65 class DepthStencilbuffer; 66 class VertexDataManager; 67 class IndexDataManager; 68 class Fence; 69 class FenceSync; 70 class Query; 71 class Sampler; 72 class VertexArray; 73 class TransformFeedback; 74 75 enum 76 { 77 MAX_VERTEX_ATTRIBS = sw::MAX_VERTEX_INPUTS, 78 MAX_UNIFORM_VECTORS = 256, // Device limit 79 MAX_VERTEX_UNIFORM_VECTORS = sw::VERTEX_UNIFORM_VECTORS - 3, // Reserve space for gl_DepthRange 80 MAX_VARYING_VECTORS = MIN(sw::MAX_FRAGMENT_INPUTS, sw::MAX_VERTEX_OUTPUTS), 81 MAX_TEXTURE_IMAGE_UNITS = sw::TEXTURE_IMAGE_UNITS, 82 MAX_VERTEX_TEXTURE_IMAGE_UNITS = sw::VERTEX_TEXTURE_IMAGE_UNITS, 83 MAX_COMBINED_TEXTURE_IMAGE_UNITS = MAX_TEXTURE_IMAGE_UNITS + MAX_VERTEX_TEXTURE_IMAGE_UNITS, 84 MAX_FRAGMENT_UNIFORM_VECTORS = sw::FRAGMENT_UNIFORM_VECTORS - 3, // Reserve space for gl_DepthRange 85 MAX_ELEMENT_INDEX = 0x7FFFFFFF, 86 MAX_ELEMENTS_INDICES = 0x7FFFFFFF, 87 MAX_ELEMENTS_VERTICES = 0x7FFFFFFF, 88 MAX_VERTEX_OUTPUT_VECTORS = 16, 89 MAX_FRAGMENT_INPUT_VECTORS = 15, 90 MIN_PROGRAM_TEXEL_OFFSET = sw::MIN_PROGRAM_TEXEL_OFFSET, 91 MAX_PROGRAM_TEXEL_OFFSET = sw::MAX_PROGRAM_TEXEL_OFFSET, 92 MAX_TEXTURE_LOD_BIAS = sw::MAX_TEXTURE_LOD, 93 MAX_DRAW_BUFFERS = sw::RENDERTARGETS, 94 MAX_COLOR_ATTACHMENTS = MAX(MAX_DRAW_BUFFERS, 8), 95 MAX_FRAGMENT_UNIFORM_BLOCKS = sw::MAX_FRAGMENT_UNIFORM_BLOCKS, 96 MAX_VERTEX_UNIFORM_BLOCKS = sw::MAX_VERTEX_UNIFORM_BLOCKS, 97 MAX_FRAGMENT_UNIFORM_COMPONENTS = sw::FRAGMENT_UNIFORM_VECTORS * 4, 98 MAX_VERTEX_UNIFORM_COMPONENTS = sw::VERTEX_UNIFORM_VECTORS * 4, 99 MAX_UNIFORM_BLOCK_SIZE = sw::MAX_UNIFORM_BLOCK_SIZE, 100 MAX_FRAGMENT_UNIFORM_BLOCKS_COMPONENTS = sw::MAX_FRAGMENT_UNIFORM_BLOCKS * MAX_UNIFORM_BLOCK_SIZE / 4, 101 MAX_VERTEX_UNIFORM_BLOCKS_COMPONENTS = MAX_VERTEX_UNIFORM_BLOCKS * MAX_UNIFORM_BLOCK_SIZE / 4, 102 MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS = MAX_FRAGMENT_UNIFORM_BLOCKS_COMPONENTS + MAX_FRAGMENT_UNIFORM_COMPONENTS, 103 MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS = MAX_VERTEX_UNIFORM_BLOCKS_COMPONENTS + MAX_VERTEX_UNIFORM_COMPONENTS, 104 MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS = 4, 105 MAX_UNIFORM_BUFFER_BINDINGS = sw::MAX_UNIFORM_BUFFER_BINDINGS, 106 UNIFORM_BUFFER_OFFSET_ALIGNMENT = 4, 107 NUM_PROGRAM_BINARY_FORMATS = 0, 108 }; 109 110 const GLenum compressedTextureFormats[] = 111 { 112 GL_ETC1_RGB8_OES, 113 GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 114 GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, 115 GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE, 116 GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE, 117 #if (GL_ES_VERSION_3_0) 118 GL_COMPRESSED_R11_EAC, 119 GL_COMPRESSED_SIGNED_R11_EAC, 120 GL_COMPRESSED_RG11_EAC, 121 GL_COMPRESSED_SIGNED_RG11_EAC, 122 GL_COMPRESSED_RGB8_ETC2, 123 GL_COMPRESSED_SRGB8_ETC2, 124 GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2, 125 GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, 126 GL_COMPRESSED_RGBA8_ETC2_EAC, 127 GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, 128 #if (ASTC_SUPPORT) 129 GL_COMPRESSED_RGBA_ASTC_4x4_KHR, 130 GL_COMPRESSED_RGBA_ASTC_5x4_KHR, 131 GL_COMPRESSED_RGBA_ASTC_5x5_KHR, 132 GL_COMPRESSED_RGBA_ASTC_6x5_KHR, 133 GL_COMPRESSED_RGBA_ASTC_6x6_KHR, 134 GL_COMPRESSED_RGBA_ASTC_8x5_KHR, 135 GL_COMPRESSED_RGBA_ASTC_8x6_KHR, 136 GL_COMPRESSED_RGBA_ASTC_8x8_KHR, 137 GL_COMPRESSED_RGBA_ASTC_10x5_KHR, 138 GL_COMPRESSED_RGBA_ASTC_10x6_KHR, 139 GL_COMPRESSED_RGBA_ASTC_10x8_KHR, 140 GL_COMPRESSED_RGBA_ASTC_10x10_KHR, 141 GL_COMPRESSED_RGBA_ASTC_12x10_KHR, 142 GL_COMPRESSED_RGBA_ASTC_12x12_KHR, 143 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR, 144 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR, 145 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR, 146 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR, 147 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR, 148 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR, 149 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR, 150 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR, 151 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR, 152 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR, 153 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR, 154 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR, 155 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR, 156 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR, 157 #endif // ASTC_SUPPORT 158 #endif // GL_ES_VERSION_3_0 159 }; 160 161 const GLenum GL_TEXTURE_FILTERING_HINT_CHROMIUM = 0x8AF0; 162 163 const GLint NUM_COMPRESSED_TEXTURE_FORMATS = sizeof(compressedTextureFormats) / sizeof(compressedTextureFormats[0]); 164 165 const GLint multisampleCount[] = {4, 2, 1}; 166 const GLint NUM_MULTISAMPLE_COUNTS = sizeof(multisampleCount) / sizeof(multisampleCount[0]); 167 const GLint IMPLEMENTATION_MAX_SAMPLES = multisampleCount[0]; 168 169 const float ALIASED_LINE_WIDTH_RANGE_MIN = 1.0f; 170 const float ALIASED_LINE_WIDTH_RANGE_MAX = 1.0f; 171 const float ALIASED_POINT_SIZE_RANGE_MIN = 0.125f; 172 const float ALIASED_POINT_SIZE_RANGE_MAX = 8192.0f; 173 const float MAX_TEXTURE_MAX_ANISOTROPY = 16.0f; 174 175 enum QueryType 176 { 177 QUERY_ANY_SAMPLES_PASSED, 178 QUERY_ANY_SAMPLES_PASSED_CONSERVATIVE, 179 QUERY_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN, 180 181 QUERY_TYPE_COUNT 182 }; 183 184 struct Color 185 { 186 float red; 187 float green; 188 float blue; 189 float alpha; 190 }; 191 192 // Helper structure describing a single vertex attribute 193 class VertexAttribute 194 { 195 public: 196 VertexAttribute() : mType(GL_FLOAT), mSize(4), mNormalized(false), mPureInteger(false), mStride(0), mDivisor(0), mPointer(nullptr), mArrayEnabled(false) 197 { 198 mCurrentValue[0].f = 0.0f; 199 mCurrentValue[1].f = 0.0f; 200 mCurrentValue[2].f = 0.0f; 201 mCurrentValue[3].f = 1.0f; 202 mCurrentValueType = GL_FLOAT; 203 } 204 205 int typeSize() const 206 { 207 switch(mType) 208 { 209 case GL_BYTE: return mSize * sizeof(GLbyte); 210 case GL_UNSIGNED_BYTE: return mSize * sizeof(GLubyte); 211 case GL_SHORT: return mSize * sizeof(GLshort); 212 case GL_UNSIGNED_SHORT: return mSize * sizeof(GLushort); 213 case GL_INT: return mSize * sizeof(GLint); 214 case GL_UNSIGNED_INT: return mSize * sizeof(GLuint); 215 case GL_FIXED: return mSize * sizeof(GLfixed); 216 case GL_FLOAT: return mSize * sizeof(GLfloat); 217 case GL_HALF_FLOAT_OES: 218 case GL_HALF_FLOAT: return mSize * sizeof(GLhalf); 219 case GL_INT_2_10_10_10_REV: return sizeof(GLint); 220 case GL_UNSIGNED_INT_2_10_10_10_REV: return sizeof(GLuint); 221 default: UNREACHABLE(mType); return mSize * sizeof(GLfloat); 222 } 223 } 224 225 GLenum currentValueType() const 226 { 227 return mCurrentValueType; 228 } 229 230 GLsizei stride() const 231 { 232 return mStride ? mStride : typeSize(); 233 } 234 235 inline float getCurrentValueBitsAsFloat(int i) const 236 { 237 return mCurrentValue[i].f; 238 } 239 240 inline float getCurrentValueF(int i) const 241 { 242 switch(mCurrentValueType) 243 { 244 case GL_FLOAT: return mCurrentValue[i].f; 245 case GL_INT: return static_cast<float>(mCurrentValue[i].i); 246 case GL_UNSIGNED_INT: return static_cast<float>(mCurrentValue[i].ui); 247 default: UNREACHABLE(mCurrentValueType); return mCurrentValue[i].f; 248 } 249 } 250 251 inline GLint getCurrentValueI(int i) const 252 { 253 switch(mCurrentValueType) 254 { 255 case GL_FLOAT: return static_cast<GLint>(mCurrentValue[i].f); 256 case GL_INT: return mCurrentValue[i].i; 257 case GL_UNSIGNED_INT: return static_cast<GLint>(mCurrentValue[i].ui); 258 default: UNREACHABLE(mCurrentValueType); return mCurrentValue[i].i; 259 } 260 } 261 262 inline GLuint getCurrentValueUI(int i) const 263 { 264 switch(mCurrentValueType) 265 { 266 case GL_FLOAT: return static_cast<GLuint>(mCurrentValue[i].f); 267 case GL_INT: return static_cast<GLuint>(mCurrentValue[i].i); 268 case GL_UNSIGNED_INT: return mCurrentValue[i].ui; 269 default: UNREACHABLE(mCurrentValueType); return mCurrentValue[i].ui; 270 } 271 } 272 273 inline void setCurrentValue(const GLfloat *values) 274 { 275 mCurrentValue[0].f = values[0]; 276 mCurrentValue[1].f = values[1]; 277 mCurrentValue[2].f = values[2]; 278 mCurrentValue[3].f = values[3]; 279 mCurrentValueType = GL_FLOAT; 280 } 281 282 inline void setCurrentValue(const GLint *values) 283 { 284 mCurrentValue[0].i = values[0]; 285 mCurrentValue[1].i = values[1]; 286 mCurrentValue[2].i = values[2]; 287 mCurrentValue[3].i = values[3]; 288 mCurrentValueType = GL_INT; 289 } 290 291 inline void setCurrentValue(const GLuint *values) 292 { 293 mCurrentValue[0].ui = values[0]; 294 mCurrentValue[1].ui = values[1]; 295 mCurrentValue[2].ui = values[2]; 296 mCurrentValue[3].ui = values[3]; 297 mCurrentValueType = GL_UNSIGNED_INT; 298 } 299 300 // From glVertexAttribPointer 301 GLenum mType; 302 GLint mSize; 303 bool mNormalized; 304 bool mPureInteger; 305 GLsizei mStride; // 0 means natural stride 306 GLuint mDivisor; // From glVertexAttribDivisor 307 308 union 309 { 310 const void *mPointer; 311 intptr_t mOffset; 312 }; 313 314 gl::BindingPointer<Buffer> mBoundBuffer; // Captured when glVertexAttribPointer is called. 315 316 bool mArrayEnabled; // From glEnable/DisableVertexAttribArray 317 318 private: 319 union ValueUnion 320 { 321 float f; 322 GLint i; 323 GLuint ui; 324 }; 325 326 ValueUnion mCurrentValue[4]; // From glVertexAttrib 327 GLenum mCurrentValueType; 328 }; 329 330 typedef VertexAttribute VertexAttributeArray[MAX_VERTEX_ATTRIBS]; 331 332 // Helper structure to store all raw state 333 struct State 334 { 335 Color colorClearValue; 336 GLclampf depthClearValue; 337 int stencilClearValue; 338 339 bool cullFaceEnabled; 340 GLenum cullMode; 341 GLenum frontFace; 342 bool depthTestEnabled; 343 GLenum depthFunc; 344 bool blendEnabled; 345 GLenum sourceBlendRGB; 346 GLenum destBlendRGB; 347 GLenum sourceBlendAlpha; 348 GLenum destBlendAlpha; 349 GLenum blendEquationRGB; 350 GLenum blendEquationAlpha; 351 Color blendColor; 352 bool stencilTestEnabled; 353 GLenum stencilFunc; 354 GLint stencilRef; 355 GLuint stencilMask; 356 GLenum stencilFail; 357 GLenum stencilPassDepthFail; 358 GLenum stencilPassDepthPass; 359 GLuint stencilWritemask; 360 GLenum stencilBackFunc; 361 GLint stencilBackRef; 362 GLuint stencilBackMask; 363 GLenum stencilBackFail; 364 GLenum stencilBackPassDepthFail; 365 GLenum stencilBackPassDepthPass; 366 GLuint stencilBackWritemask; 367 bool polygonOffsetFillEnabled; 368 GLfloat polygonOffsetFactor; 369 GLfloat polygonOffsetUnits; 370 bool sampleAlphaToCoverageEnabled; 371 bool sampleCoverageEnabled; 372 GLclampf sampleCoverageValue; 373 bool sampleCoverageInvert; 374 bool scissorTestEnabled; 375 bool ditherEnabled; 376 bool primitiveRestartFixedIndexEnabled; 377 bool rasterizerDiscardEnabled; 378 bool colorLogicOpEnabled; 379 GLenum logicalOperation; 380 381 GLfloat lineWidth; 382 383 GLenum generateMipmapHint; 384 GLenum fragmentShaderDerivativeHint; 385 GLenum textureFilteringHint; 386 387 GLint viewportX; 388 GLint viewportY; 389 GLsizei viewportWidth; 390 GLsizei viewportHeight; 391 float zNear; 392 float zFar; 393 394 GLint scissorX; 395 GLint scissorY; 396 GLsizei scissorWidth; 397 GLsizei scissorHeight; 398 399 bool colorMaskRed; 400 bool colorMaskGreen; 401 bool colorMaskBlue; 402 bool colorMaskAlpha; 403 bool depthMask; 404 405 unsigned int activeSampler; // Active texture unit selector - GL_TEXTURE0 406 gl::BindingPointer<Buffer> arrayBuffer; 407 gl::BindingPointer<Buffer> copyReadBuffer; 408 gl::BindingPointer<Buffer> copyWriteBuffer; 409 gl::BindingPointer<Buffer> pixelPackBuffer; 410 gl::BindingPointer<Buffer> pixelUnpackBuffer; 411 gl::BindingPointer<Buffer> genericUniformBuffer; 412 BufferBinding uniformBuffers[MAX_UNIFORM_BUFFER_BINDINGS]; 413 414 GLuint readFramebuffer; 415 GLuint drawFramebuffer; 416 gl::BindingPointer<Renderbuffer> renderbuffer; 417 GLuint currentProgram; 418 GLuint vertexArray; 419 GLuint transformFeedback; 420 gl::BindingPointer<Sampler> sampler[MAX_COMBINED_TEXTURE_IMAGE_UNITS]; 421 422 VertexAttribute vertexAttribute[MAX_VERTEX_ATTRIBS]; 423 gl::BindingPointer<Texture> samplerTexture[TEXTURE_TYPE_COUNT][MAX_COMBINED_TEXTURE_IMAGE_UNITS]; 424 gl::BindingPointer<Query> activeQuery[QUERY_TYPE_COUNT]; 425 426 gl::PixelStorageModes unpackParameters; 427 gl::PixelStorageModes packParameters; 428 }; 429 430 class [[clang::lto_visibility_public]] Context : public egl::Context 431 { 432 public: 433 Context(egl::Display *display, const Context *shareContext, const egl::Config *config); 434 435 void makeCurrent(gl::Surface *surface) override; 436 EGLint getClientVersion() const override; 437 EGLint getConfigID() const override; 438 439 void markAllStateDirty(); 440 441 // State manipulation 442 void setClearColor(float red, float green, float blue, float alpha); 443 void setClearDepth(float depth); 444 void setClearStencil(int stencil); 445 446 void setCullFaceEnabled(bool enabled); 447 bool isCullFaceEnabled() const; 448 void setCullMode(GLenum mode); 449 void setFrontFace(GLenum front); 450 451 void setDepthTestEnabled(bool enabled); 452 bool isDepthTestEnabled() const; 453 void setDepthFunc(GLenum depthFunc); 454 void setDepthRange(float zNear, float zFar); 455 456 void setBlendEnabled(bool enabled); 457 bool isBlendEnabled() const; 458 void setBlendFactors(GLenum sourceRGB, GLenum destRGB, GLenum sourceAlpha, GLenum destAlpha); 459 void setBlendColor(float red, float green, float blue, float alpha); 460 void setBlendEquation(GLenum rgbEquation, GLenum alphaEquation); 461 462 void setStencilTestEnabled(bool enabled); 463 bool isStencilTestEnabled() const; 464 void setStencilParams(GLenum stencilFunc, GLint stencilRef, GLuint stencilMask); 465 void setStencilBackParams(GLenum stencilBackFunc, GLint stencilBackRef, GLuint stencilBackMask); 466 void setStencilWritemask(GLuint stencilWritemask); 467 void setStencilBackWritemask(GLuint stencilBackWritemask); 468 void setStencilOperations(GLenum stencilFail, GLenum stencilPassDepthFail, GLenum stencilPassDepthPass); 469 void setStencilBackOperations(GLenum stencilBackFail, GLenum stencilBackPassDepthFail, GLenum stencilBackPassDepthPass); 470 471 void setPolygonOffsetFillEnabled(bool enabled); 472 bool isPolygonOffsetFillEnabled() const; 473 void setPolygonOffsetParams(GLfloat factor, GLfloat units); 474 475 void setSampleAlphaToCoverageEnabled(bool enabled); 476 bool isSampleAlphaToCoverageEnabled() const; 477 void setSampleCoverageEnabled(bool enabled); 478 bool isSampleCoverageEnabled() const; 479 void setSampleCoverageParams(GLclampf value, bool invert); 480 481 void setDitherEnabled(bool enabled); 482 bool isDitherEnabled() const; 483 484 void setPrimitiveRestartFixedIndexEnabled(bool enabled); 485 bool isPrimitiveRestartFixedIndexEnabled() const; 486 487 void setRasterizerDiscardEnabled(bool enabled); 488 bool isRasterizerDiscardEnabled() const; 489 490 void setLineWidth(GLfloat width); 491 492 void setGenerateMipmapHint(GLenum hint); 493 void setFragmentShaderDerivativeHint(GLenum hint); 494 void setTextureFilteringHint(GLenum hint); 495 496 void setViewportParams(GLint x, GLint y, GLsizei width, GLsizei height); 497 498 void setScissorTestEnabled(bool enabled); 499 bool isScissorTestEnabled() const; 500 void setScissorParams(GLint x, GLint y, GLsizei width, GLsizei height); 501 502 void setColorMask(bool red, bool green, bool blue, bool alpha); 503 unsigned int getColorMask() const; 504 void setDepthMask(bool mask); 505 506 void setActiveSampler(unsigned int active); 507 508 GLuint getReadFramebufferName() const; 509 GLuint getDrawFramebufferName() const; 510 GLuint getRenderbufferName() const; 511 512 void setFramebufferReadBuffer(GLenum buf); 513 void setFramebufferDrawBuffers(GLsizei n, const GLenum *bufs); 514 515 GLuint getActiveQuery(GLenum target) const; 516 517 GLuint getArrayBufferName() const; 518 GLuint getElementArrayBufferName() const; 519 520 void setVertexAttribArrayEnabled(unsigned int attribNum, bool enabled); 521 void setVertexAttribDivisor(unsigned int attribNum, GLuint divisor); 522 const VertexAttribute &getVertexAttribState(unsigned int attribNum) const; 523 void setVertexAttribState(unsigned int attribNum, Buffer *boundBuffer, GLint size, GLenum type, 524 bool normalized, bool pureInteger, GLsizei stride, const void *pointer); 525 const void *getVertexAttribPointer(unsigned int attribNum) const; 526 527 const VertexAttributeArray &getVertexArrayAttributes(); 528 // Context attribute current values can be queried independently from VAO current values 529 const VertexAttributeArray &getCurrentVertexAttributes(); 530 531 void setUnpackAlignment(GLint alignment); 532 void setUnpackRowLength(GLint rowLength); 533 void setUnpackImageHeight(GLint imageHeight); 534 void setUnpackSkipPixels(GLint skipPixels); 535 void setUnpackSkipRows(GLint skipRows); 536 void setUnpackSkipImages(GLint skipImages); 537 const gl::PixelStorageModes &getUnpackParameters() const; 538 539 void setPackAlignment(GLint alignment); 540 void setPackRowLength(GLint rowLength); 541 void setPackSkipPixels(GLint skipPixels); 542 void setPackSkipRows(GLint skipRows); 543 544 // These create and destroy methods are merely pass-throughs to 545 // ResourceManager, which owns these object types 546 GLuint createBuffer(); 547 GLuint createShader(GLenum type); 548 GLuint createProgram(); 549 GLuint createTexture(); 550 GLuint createRenderbuffer(); 551 GLuint createSampler(); 552 GLsync createFenceSync(GLenum condition, GLbitfield flags); 553 554 void deleteBuffer(GLuint buffer); 555 void deleteShader(GLuint shader); 556 void deleteProgram(GLuint program); 557 void deleteTexture(GLuint texture); 558 void deleteRenderbuffer(GLuint renderbuffer); 559 void deleteSampler(GLuint sampler); 560 void deleteFenceSync(GLsync fenceSync); 561 562 // Framebuffers are owned by the Context, so these methods do not pass through 563 GLuint createFramebuffer(); 564 void deleteFramebuffer(GLuint framebuffer); 565 566 // Fences are owned by the Context 567 GLuint createFence(); 568 void deleteFence(GLuint fence); 569 570 // Queries are owned by the Context 571 GLuint createQuery(); 572 void deleteQuery(GLuint query); 573 574 // Vertex arrays are owned by the Context 575 GLuint createVertexArray(); 576 void deleteVertexArray(GLuint array); 577 578 // Transform feedbacks are owned by the Context 579 GLuint createTransformFeedback(); 580 void deleteTransformFeedback(GLuint transformFeedback); 581 582 void bindArrayBuffer(GLuint buffer); 583 void bindElementArrayBuffer(GLuint buffer); 584 void bindCopyReadBuffer(GLuint buffer); 585 void bindCopyWriteBuffer(GLuint buffer); 586 void bindPixelPackBuffer(GLuint buffer); 587 void bindPixelUnpackBuffer(GLuint buffer); 588 void bindTransformFeedbackBuffer(GLuint buffer); 589 void bindTexture(TextureType type, GLuint texture); 590 void bindReadFramebuffer(GLuint framebuffer); 591 void bindDrawFramebuffer(GLuint framebuffer); 592 void bindRenderbuffer(GLuint renderbuffer); 593 void bindVertexArray(GLuint array); 594 void bindGenericUniformBuffer(GLuint buffer); 595 void bindIndexedUniformBuffer(GLuint buffer, GLuint index, GLintptr offset, GLsizeiptr size); 596 void bindGenericTransformFeedbackBuffer(GLuint buffer); 597 void bindIndexedTransformFeedbackBuffer(GLuint buffer, GLuint index, GLintptr offset, GLsizeiptr size); 598 void bindTransformFeedback(GLuint transformFeedback); 599 bool bindSampler(GLuint unit, GLuint sampler); 600 void useProgram(GLuint program); 601 602 void beginQuery(GLenum target, GLuint query); 603 void endQuery(GLenum target); 604 605 void setFramebufferZero(Framebuffer *framebuffer); 606 607 void setRenderbufferStorage(RenderbufferStorage *renderbuffer); 608 609 void setVertexAttrib(GLuint index, const GLfloat *values); 610 void setVertexAttrib(GLuint index, const GLint *values); 611 void setVertexAttrib(GLuint index, const GLuint *values); 612 613 Buffer *getBuffer(GLuint handle) const; 614 Fence *getFence(GLuint handle) const; 615 FenceSync *getFenceSync(GLsync handle) const; 616 Shader *getShader(GLuint handle) const; 617 Program *getProgram(GLuint handle) const; 618 virtual Texture *getTexture(GLuint handle) const; 619 Framebuffer *getFramebuffer(GLuint handle) const; 620 virtual Renderbuffer *getRenderbuffer(GLuint handle) const; 621 Query *getQuery(GLuint handle) const; 622 VertexArray *getVertexArray(GLuint array) const; 623 VertexArray *getCurrentVertexArray() const; 624 bool isVertexArray(GLuint array) const; 625 TransformFeedback *getTransformFeedback(GLuint transformFeedback) const; 626 bool isTransformFeedback(GLuint transformFeedback) const; 627 TransformFeedback *getTransformFeedback() const; 628 Sampler *getSampler(GLuint sampler) const; 629 bool isSampler(GLuint sampler) const; 630 631 Buffer *getArrayBuffer() const; 632 Buffer *getElementArrayBuffer() const; 633 Buffer *getCopyReadBuffer() const; 634 Buffer *getCopyWriteBuffer() const; 635 Buffer *getPixelPackBuffer() const; 636 Buffer *getPixelUnpackBuffer() const; 637 Buffer *getGenericUniformBuffer() const; 638 GLsizei getRequiredBufferSize(GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type) const; 639 GLenum getPixels(const GLvoid **data, GLenum type, GLsizei imageSize) const; 640 bool getBuffer(GLenum target, es2::Buffer **buffer) const; 641 Program *getCurrentProgram() const; 642 Texture2D *getTexture2D() const; 643 Texture2D *getTexture2D(GLenum target) const; 644 Texture3D *getTexture3D() const; 645 Texture2DArray *getTexture2DArray() const; 646 TextureCubeMap *getTextureCubeMap() const; 647 Texture2DRect *getTexture2DRect() const; 648 TextureExternal *getTextureExternal() const; 649 Texture *getSamplerTexture(unsigned int sampler, TextureType type) const; 650 Framebuffer *getReadFramebuffer() const; 651 Framebuffer *getDrawFramebuffer() const; 652 653 bool getFloatv(GLenum pname, GLfloat *params) const; 654 template<typename T> bool getIntegerv(GLenum pname, T *params) const; 655 bool getBooleanv(GLenum pname, GLboolean *params) const; 656 template<typename T> bool getTransformFeedbackiv(GLuint index, GLenum pname, T *param) const; 657 template<typename T> bool getUniformBufferiv(GLuint index, GLenum pname, T *param) const; 658 void samplerParameteri(GLuint sampler, GLenum pname, GLint param); 659 void samplerParameterf(GLuint sampler, GLenum pname, GLfloat param); 660 GLint getSamplerParameteri(GLuint sampler, GLenum pname); 661 GLfloat getSamplerParameterf(GLuint sampler, GLenum pname); 662 663 bool getQueryParameterInfo(GLenum pname, GLenum *type, unsigned int *numParams) const; 664 665 bool hasZeroDivisor() const; 666 667 void drawArrays(GLenum mode, GLint first, GLsizei count, GLsizei instanceCount = 1); 668 void drawElements(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const void *indices, GLsizei instanceCount = 1); 669 void blit(sw::Surface *source, const sw::SliceRect &sRect, sw::Surface *dest, const sw::SliceRect &dRect) override; 670 void readPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLsizei *bufSize, void* pixels); 671 void clear(GLbitfield mask); 672 void clearColorBuffer(GLint drawbuffer, const GLint *value); 673 void clearColorBuffer(GLint drawbuffer, const GLuint *value); 674 void clearColorBuffer(GLint drawbuffer, const GLfloat *value); 675 void clearDepthBuffer(const GLfloat value); 676 void clearStencilBuffer(const GLint value); 677 void finish() override; 678 void flush(); 679 680 void recordInvalidEnum(); 681 void recordInvalidValue(); 682 void recordInvalidOperation(); 683 void recordOutOfMemory(); 684 void recordInvalidFramebufferOperation(); 685 686 GLenum getError(); 687 688 static int getSupportedMultisampleCount(int requested); 689 690 void blitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, 691 GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, 692 GLbitfield mask, bool filter, bool allowPartialDepthStencilBlit); 693 694 void bindTexImage(gl::Surface *surface) override; 695 EGLenum validateSharedImage(EGLenum target, GLuint name, GLuint textureLevel) override; 696 egl::Image *createSharedImage(EGLenum target, GLuint name, GLuint textureLevel) override; 697 egl::Image *getSharedImage(GLeglImageOES image); 698 699 Device *getDevice(); 700 701 const GLubyte *getExtensions(GLuint index, GLuint *numExt = nullptr) const; 702 sw::MutexLock *getResourceLock() { return mResourceManager->getLock(); } 703 704 private: 705 ~Context() override; 706 707 void applyScissor(int width, int height); 708 bool applyRenderTarget(); 709 void applyState(GLenum drawMode); 710 GLenum applyVertexBuffer(GLint base, GLint first, GLsizei count, GLsizei instanceId); 711 GLenum applyIndexBuffer(const void *indices, GLuint start, GLuint end, GLsizei count, GLenum mode, GLenum type, TranslatedIndexData *indexInfo); 712 void applyShaders(); 713 void applyTextures(); 714 void applyTextures(sw::SamplerType type); 715 void applyTexture(sw::SamplerType type, int sampler, Texture *texture); 716 void clearColorBuffer(GLint drawbuffer, void *value, sw::Format format); 717 718 void detachBuffer(GLuint buffer); 719 void detachTexture(GLuint texture); 720 void detachFramebuffer(GLuint framebuffer); 721 void detachRenderbuffer(GLuint renderbuffer); 722 void detachSampler(GLuint sampler); 723 724 bool cullSkipsDraw(GLenum drawMode); 725 bool isTriangleMode(GLenum drawMode); 726 727 Query *createQuery(GLuint handle, GLenum type); 728 729 const egl::Config *const config; 730 731 State mState; 732 733 gl::BindingPointer<Texture2D> mTexture2DZero; 734 gl::BindingPointer<Texture3D> mTexture3DZero; 735 gl::BindingPointer<Texture2DArray> mTexture2DArrayZero; 736 gl::BindingPointer<TextureCubeMap> mTextureCubeMapZero; 737 gl::BindingPointer<Texture2DRect> mTexture2DRectZero; 738 gl::BindingPointer<TextureExternal> mTextureExternalZero; 739 740 gl::NameSpace<Framebuffer> mFramebufferNameSpace; 741 gl::NameSpace<Fence, 0> mFenceNameSpace; 742 gl::NameSpace<Query> mQueryNameSpace; 743 gl::NameSpace<VertexArray> mVertexArrayNameSpace; 744 gl::NameSpace<TransformFeedback> mTransformFeedbackNameSpace; 745 746 VertexDataManager *mVertexDataManager; 747 IndexDataManager *mIndexDataManager; 748 749 // Recorded errors 750 bool mInvalidEnum; 751 bool mInvalidValue; 752 bool mInvalidOperation; 753 bool mOutOfMemory; 754 bool mInvalidFramebufferOperation; 755 756 bool mHasBeenCurrent; 757 758 unsigned int mAppliedProgramSerial; 759 760 // state caching flags 761 bool mDepthStateDirty; 762 bool mMaskStateDirty; 763 bool mBlendStateDirty; 764 bool mStencilStateDirty; 765 bool mPolygonOffsetStateDirty; 766 bool mSampleStateDirty; 767 bool mFrontFaceDirty; 768 bool mDitherStateDirty; 769 770 Device *device; 771 ResourceManager *mResourceManager; 772 }; 773 774 // ptr to a context, which also holds the context's resource manager's lock. 775 class ContextPtr { 776 public: 777 explicit ContextPtr(Context *context) : ptr(context) 778 { 779 if (ptr) ptr->getResourceLock()->lock(); 780 } 781 782 ~ContextPtr() { 783 if (ptr) ptr->getResourceLock()->unlock(); 784 } 785 786 Context *operator ->() { return ptr; } 787 operator bool() const { return ptr != nullptr; } 788 789 private: 790 Context *ptr; 791 }; 792 793 } 794 795 #endif // INCLUDE_CONTEXT_H_ 796
