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| 1 | |
| 2 /* | |
| 3 * Copyright 2011 Google Inc. | |
| 4 * | |
| 5 * Use of this source code is governed by a BSD-style license that can be | |
| 6 * found in the LICENSE file. | |
| 7 */ | |
| 8 | |
| 9 #include "NullGLContext.h" | |
| 10 #include "gl/GrGLTestInterface.h" | |
| 11 #include "gl/GrGLDefines.h" | |
| 12 #include "gl/GrGLInterface.h" | |
| 13 #include "gl/GrGLTypes.h" | |
| 14 #include "SkMutex.h" | |
| 15 #include "SkTDArray.h" | |
| 16 | |
| 17 namespace { | |
| 18 | |
| 19 class BufferObj { | |
| 20 public: | |
| 21 BufferObj(GrGLuint id) : fID(id), fDataPtr(nullptr), fSize(0), fMapped(false
) {} | |
| 22 ~BufferObj() { delete[] fDataPtr; } | |
| 23 | |
| 24 void allocate(GrGLsizeiptr size, const GrGLchar* dataPtr) { | |
| 25 if (fDataPtr) { | |
| 26 SkASSERT(0 != fSize); | |
| 27 delete[] fDataPtr; | |
| 28 } | |
| 29 | |
| 30 fSize = size; | |
| 31 fDataPtr = new char[size]; | |
| 32 } | |
| 33 | |
| 34 GrGLuint id() const { return fID; } | |
| 35 GrGLchar* dataPtr() { return fDataPtr; } | |
| 36 GrGLsizeiptr size() const { return fSize; } | |
| 37 | |
| 38 void setMapped(bool mapped) { fMapped = mapped; } | |
| 39 bool mapped() const { return fMapped; } | |
| 40 | |
| 41 private: | |
| 42 GrGLuint fID; | |
| 43 GrGLchar* fDataPtr; | |
| 44 GrGLsizeiptr fSize; // size in bytes | |
| 45 bool fMapped; | |
| 46 }; | |
| 47 | |
| 48 // This class maintains a sparsely populated array of buffer pointers. | |
| 49 class BufferManager { | |
| 50 public: | |
| 51 BufferManager() : fFreeListHead(kFreeListEnd) {} | |
| 52 | |
| 53 ~BufferManager() { | |
| 54 // nullptr out the entries that are really free list links rather than p
trs before deleting. | |
| 55 intptr_t curr = fFreeListHead; | |
| 56 while (kFreeListEnd != curr) { | |
| 57 intptr_t next = reinterpret_cast<intptr_t>(fBuffers[SkToS32(curr)]); | |
| 58 fBuffers[SkToS32(curr)] = nullptr; | |
| 59 curr = next; | |
| 60 } | |
| 61 | |
| 62 fBuffers.deleteAll(); | |
| 63 } | |
| 64 | |
| 65 BufferObj* lookUp(GrGLuint id) { | |
| 66 BufferObj* buffer = fBuffers[id]; | |
| 67 SkASSERT(buffer && buffer->id() == id); | |
| 68 return buffer; | |
| 69 } | |
| 70 | |
| 71 BufferObj* create() { | |
| 72 GrGLuint id; | |
| 73 BufferObj* buffer; | |
| 74 | |
| 75 if (kFreeListEnd == fFreeListHead) { | |
| 76 // no free slots - create a new one | |
| 77 id = fBuffers.count(); | |
| 78 buffer = new BufferObj(id); | |
| 79 *fBuffers.append() = buffer; | |
| 80 } else { | |
| 81 // grab the head of the free list and advance the head to the next f
ree slot. | |
| 82 id = static_cast<GrGLuint>(fFreeListHead); | |
| 83 fFreeListHead = reinterpret_cast<intptr_t>(fBuffers[id]); | |
| 84 | |
| 85 buffer = new BufferObj(id); | |
| 86 fBuffers[id] = buffer; | |
| 87 } | |
| 88 | |
| 89 return buffer; | |
| 90 } | |
| 91 | |
| 92 void free(BufferObj* buffer) { | |
| 93 SkASSERT(fBuffers.count() > 0); | |
| 94 | |
| 95 GrGLuint id = buffer->id(); | |
| 96 delete buffer; | |
| 97 | |
| 98 fBuffers[id] = reinterpret_cast<BufferObj*>(fFreeListHead); | |
| 99 fFreeListHead = id; | |
| 100 } | |
| 101 | |
| 102 private: | |
| 103 static const intptr_t kFreeListEnd = -1; | |
| 104 // Index of the first entry of fBuffers in the free list. Free slots in fBuf
fers are indices to | |
| 105 // the next free slot. The last free slot has a value of kFreeListEnd. | |
| 106 intptr_t fFreeListHead; | |
| 107 SkTDArray<BufferObj*> fBuffers; | |
| 108 }; | |
| 109 | |
| 110 /** Null interface implementation */ | |
| 111 class NullInterface : public GrGLTestInterface { | |
| 112 public: | |
| 113 NullInterface() | |
| 114 : fCurrArrayBuffer(0) | |
| 115 , fCurrElementArrayBuffer(0) | |
| 116 , fCurrPixelPackBuffer(0) | |
| 117 , fCurrPixelUnpackBuffer(0) | |
| 118 , fCurrShaderID(0) | |
| 119 , fCurrGenericID(0) | |
| 120 , fCurrUniformLocation(0) { | |
| 121 this->init(kGL_GrGLStandard); | |
| 122 } | |
| 123 | |
| 124 GrGLenum checkFramebufferStatus(GrGLenum target) override { | |
| 125 return GR_GL_FRAMEBUFFER_COMPLETE; | |
| 126 } | |
| 127 | |
| 128 GrGLvoid genBuffers(GrGLsizei n, GrGLuint* ids) override { | |
| 129 for (int i = 0; i < n; ++i) { | |
| 130 BufferObj* buffer = fBufferManager.create(); | |
| 131 ids[i] = buffer->id(); | |
| 132 } | |
| 133 } | |
| 134 | |
| 135 GrGLvoid bufferData(GrGLenum target, GrGLsizeiptr size, const GrGLvoid* data
, | |
| 136 GrGLenum usage) override { | |
| 137 GrGLuint id = 0; | |
| 138 | |
| 139 switch (target) { | |
| 140 case GR_GL_ARRAY_BUFFER: | |
| 141 id = fCurrArrayBuffer; | |
| 142 break; | |
| 143 case GR_GL_ELEMENT_ARRAY_BUFFER: | |
| 144 id = fCurrElementArrayBuffer; | |
| 145 break; | |
| 146 case GR_GL_PIXEL_PACK_BUFFER: | |
| 147 id = fCurrPixelPackBuffer; | |
| 148 break; | |
| 149 case GR_GL_PIXEL_UNPACK_BUFFER: | |
| 150 id = fCurrPixelUnpackBuffer; | |
| 151 break; | |
| 152 default: | |
| 153 SkFAIL("Unexpected target to nullGLBufferData"); | |
| 154 break; | |
| 155 } | |
| 156 | |
| 157 if (id > 0) { | |
| 158 BufferObj* buffer = fBufferManager.lookUp(id); | |
| 159 buffer->allocate(size, (const GrGLchar*) data); | |
| 160 } | |
| 161 } | |
| 162 | |
| 163 GrGLuint createProgram() override { | |
| 164 return ++fCurrProgramID; | |
| 165 } | |
| 166 | |
| 167 GrGLuint createShader(GrGLenum type) override { | |
| 168 return ++fCurrShaderID; | |
| 169 } | |
| 170 | |
| 171 GrGLvoid bindBuffer(GrGLenum target, GrGLuint buffer) override { | |
| 172 switch (target) { | |
| 173 case GR_GL_ARRAY_BUFFER: | |
| 174 fCurrArrayBuffer = buffer; | |
| 175 break; | |
| 176 case GR_GL_ELEMENT_ARRAY_BUFFER: | |
| 177 fCurrElementArrayBuffer = buffer; | |
| 178 break; | |
| 179 case GR_GL_PIXEL_PACK_BUFFER: | |
| 180 fCurrPixelPackBuffer = buffer; | |
| 181 break; | |
| 182 case GR_GL_PIXEL_UNPACK_BUFFER: | |
| 183 fCurrPixelUnpackBuffer = buffer; | |
| 184 break; | |
| 185 } | |
| 186 } | |
| 187 | |
| 188 // deleting a bound buffer has the side effect of binding 0 | |
| 189 GrGLvoid deleteBuffers(GrGLsizei n, const GrGLuint* ids) override { | |
| 190 for (int i = 0; i < n; ++i) { | |
| 191 if (ids[i] == fCurrArrayBuffer) { | |
| 192 fCurrArrayBuffer = 0; | |
| 193 } | |
| 194 if (ids[i] == fCurrElementArrayBuffer) { | |
| 195 fCurrElementArrayBuffer = 0; | |
| 196 } | |
| 197 if (ids[i] == fCurrPixelPackBuffer) { | |
| 198 fCurrPixelPackBuffer = 0; | |
| 199 } | |
| 200 if (ids[i] == fCurrPixelUnpackBuffer) { | |
| 201 fCurrPixelUnpackBuffer = 0; | |
| 202 } | |
| 203 | |
| 204 BufferObj* buffer = fBufferManager.lookUp(ids[i]); | |
| 205 fBufferManager.free(buffer); | |
| 206 } | |
| 207 } | |
| 208 | |
| 209 GrGLvoid genFramebuffers(GrGLsizei n, GrGLuint *framebuffers) override { | |
| 210 this->genGenericIds(n, framebuffers); | |
| 211 } | |
| 212 | |
| 213 GrGLvoid genQueries(GrGLsizei n, GrGLuint *ids) override { this->genGenericI
ds(n, ids); } | |
| 214 | |
| 215 GrGLvoid genRenderbuffers(GrGLsizei n, GrGLuint *renderbuffers) override { | |
| 216 this->genGenericIds(n, renderbuffers); | |
| 217 } | |
| 218 | |
| 219 GrGLvoid genTextures(GrGLsizei n, GrGLuint *textures) override { | |
| 220 this->genGenericIds(n, textures); | |
| 221 } | |
| 222 | |
| 223 GrGLvoid genVertexArrays(GrGLsizei n, GrGLuint *arrays) override { | |
| 224 this->genGenericIds(n, arrays); | |
| 225 } | |
| 226 | |
| 227 GrGLenum getError() override { return GR_GL_NO_ERROR; } | |
| 228 | |
| 229 GrGLvoid getIntegerv(GrGLenum pname, GrGLint* params) override { | |
| 230 // TODO: remove from Ganesh the #defines for gets we don't use. | |
| 231 // We would like to minimize gets overall due to performance issues | |
| 232 switch (pname) { | |
| 233 case GR_GL_CONTEXT_PROFILE_MASK: | |
| 234 *params = GR_GL_CONTEXT_COMPATIBILITY_PROFILE_BIT; | |
| 235 break; | |
| 236 case GR_GL_STENCIL_BITS: | |
| 237 *params = 8; | |
| 238 break; | |
| 239 case GR_GL_SAMPLES: | |
| 240 *params = 1; | |
| 241 break; | |
| 242 case GR_GL_FRAMEBUFFER_BINDING: | |
| 243 *params = 0; | |
| 244 break; | |
| 245 case GR_GL_VIEWPORT: | |
| 246 params[0] = 0; | |
| 247 params[1] = 0; | |
| 248 params[2] = 800; | |
| 249 params[3] = 600; | |
| 250 break; | |
| 251 case GR_GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS: | |
| 252 case GR_GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS: | |
| 253 case GR_GL_MAX_TEXTURE_IMAGE_UNITS: | |
| 254 case GR_GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS: | |
| 255 *params = 8; | |
| 256 break; | |
| 257 case GR_GL_MAX_TEXTURE_COORDS: | |
| 258 *params = 8; | |
| 259 break; | |
| 260 case GR_GL_MAX_VERTEX_UNIFORM_VECTORS: | |
| 261 *params = kDefaultMaxVertexUniformVectors; | |
| 262 break; | |
| 263 case GR_GL_MAX_FRAGMENT_UNIFORM_VECTORS: | |
| 264 *params = kDefaultMaxFragmentUniformVectors; | |
| 265 break; | |
| 266 case GR_GL_MAX_FRAGMENT_UNIFORM_COMPONENTS: | |
| 267 *params = 16 * 4; | |
| 268 break; | |
| 269 case GR_GL_NUM_COMPRESSED_TEXTURE_FORMATS: | |
| 270 *params = 0; | |
| 271 break; | |
| 272 case GR_GL_COMPRESSED_TEXTURE_FORMATS: | |
| 273 break; | |
| 274 case GR_GL_MAX_TEXTURE_SIZE: | |
| 275 *params = 8192; | |
| 276 break; | |
| 277 case GR_GL_MAX_RENDERBUFFER_SIZE: | |
| 278 *params = 8192; | |
| 279 break; | |
| 280 case GR_GL_MAX_SAMPLES: | |
| 281 *params = 32; | |
| 282 break; | |
| 283 case GR_GL_MAX_VERTEX_ATTRIBS: | |
| 284 *params = kDefaultMaxVertexAttribs; | |
| 285 break; | |
| 286 case GR_GL_MAX_VARYING_VECTORS: | |
| 287 *params = kDefaultMaxVaryingVectors; | |
| 288 break; | |
| 289 case GR_GL_NUM_EXTENSIONS: { | |
| 290 GrGLint i = 0; | |
| 291 while (kExtensions[i++]); | |
| 292 *params = i; | |
| 293 break; | |
| 294 } | |
| 295 default: | |
| 296 SkFAIL("Unexpected pname to GetIntegerv"); | |
| 297 } | |
| 298 } | |
| 299 | |
| 300 GrGLvoid getProgramiv(GrGLuint program, GrGLenum pname, GrGLint* params) ove
rride { | |
| 301 this->getShaderOrProgramiv(program, pname, params); | |
| 302 } | |
| 303 | |
| 304 GrGLvoid getProgramInfoLog(GrGLuint program, GrGLsizei bufsize, GrGLsizei* l
ength, | |
| 305 char* infolog) override { | |
| 306 this->getInfoLog(program, bufsize, length, infolog); | |
| 307 } | |
| 308 | |
| 309 GrGLvoid getMultisamplefv(GrGLenum pname, GrGLuint index, GrGLfloat* val) ov
erride { | |
| 310 val[0] = val[1] = 0.5f; | |
| 311 } | |
| 312 | |
| 313 GrGLvoid getQueryiv(GrGLenum GLtarget, GrGLenum pname, GrGLint *params) over
ride { | |
| 314 switch (pname) { | |
| 315 case GR_GL_CURRENT_QUERY: | |
| 316 *params = 0; | |
| 317 break; | |
| 318 case GR_GL_QUERY_COUNTER_BITS: | |
| 319 *params = 32; | |
| 320 break; | |
| 321 default: | |
| 322 SkFAIL("Unexpected pname passed GetQueryiv."); | |
| 323 } | |
| 324 } | |
| 325 | |
| 326 GrGLvoid getQueryObjecti64v(GrGLuint id, GrGLenum pname, GrGLint64 *params)
override { | |
| 327 this->queryResult(id, pname, params); | |
| 328 } | |
| 329 | |
| 330 GrGLvoid getQueryObjectiv(GrGLuint id, GrGLenum pname, GrGLint *params) over
ride { | |
| 331 this->queryResult(id, pname, params); | |
| 332 } | |
| 333 | |
| 334 GrGLvoid getQueryObjectui64v(GrGLuint id, GrGLenum pname, GrGLuint64 *params
) override { | |
| 335 this->queryResult(id, pname, params); | |
| 336 } | |
| 337 | |
| 338 GrGLvoid getQueryObjectuiv(GrGLuint id, GrGLenum pname, GrGLuint *params) ov
erride { | |
| 339 this->queryResult(id, pname, params); | |
| 340 } | |
| 341 | |
| 342 GrGLvoid getShaderiv(GrGLuint shader, GrGLenum pname, GrGLint* params) overr
ide { | |
| 343 this->getShaderOrProgramiv(shader, pname, params); | |
| 344 } | |
| 345 | |
| 346 GrGLvoid getShaderInfoLog(GrGLuint shader, GrGLsizei bufsize, GrGLsizei* len
gth, | |
| 347 char* infolog) override { | |
| 348 this->getInfoLog(shader, bufsize, length, infolog); | |
| 349 } | |
| 350 | |
| 351 const GrGLubyte* getString(GrGLenum name) override { | |
| 352 switch (name) { | |
| 353 case GR_GL_EXTENSIONS: | |
| 354 return CombinedExtensionString(); | |
| 355 case GR_GL_VERSION: | |
| 356 return (const GrGLubyte*)"4.0 Null GL"; | |
| 357 case GR_GL_SHADING_LANGUAGE_VERSION: | |
| 358 return (const GrGLubyte*)"4.20.8 Null GLSL"; | |
| 359 case GR_GL_VENDOR: | |
| 360 return (const GrGLubyte*)"Null Vendor"; | |
| 361 case GR_GL_RENDERER: | |
| 362 return (const GrGLubyte*)"The Null (Non-)Renderer"; | |
| 363 default: | |
| 364 SkFAIL("Unexpected name passed to GetString"); | |
| 365 return nullptr; | |
| 366 } | |
| 367 } | |
| 368 | |
| 369 const GrGLubyte* getStringi(GrGLenum name, GrGLuint i) override { | |
| 370 switch (name) { | |
| 371 case GR_GL_EXTENSIONS: { | |
| 372 GrGLint count; | |
| 373 this->getIntegerv(GR_GL_NUM_EXTENSIONS, &count); | |
| 374 if ((GrGLint)i <= count) { | |
| 375 return (const GrGLubyte*) kExtensions[i]; | |
| 376 } else { | |
| 377 return nullptr; | |
| 378 } | |
| 379 } | |
| 380 default: | |
| 381 SkFAIL("Unexpected name passed to GetStringi"); | |
| 382 return nullptr; | |
| 383 } | |
| 384 } | |
| 385 | |
| 386 GrGLint getUniformLocation(GrGLuint program, const char* name) override { | |
| 387 return ++fCurrUniformLocation; | |
| 388 } | |
| 389 | |
| 390 GrGLvoid* mapBufferRange(GrGLenum target, GrGLintptr offset, GrGLsizeiptr le
ngth, | |
| 391 GrGLbitfield access) override { | |
| 392 GrGLuint id = 0; | |
| 393 switch (target) { | |
| 394 case GR_GL_ARRAY_BUFFER: | |
| 395 id = fCurrArrayBuffer; | |
| 396 break; | |
| 397 case GR_GL_ELEMENT_ARRAY_BUFFER: | |
| 398 id = fCurrElementArrayBuffer; | |
| 399 break; | |
| 400 case GR_GL_PIXEL_PACK_BUFFER: | |
| 401 id = fCurrPixelPackBuffer; | |
| 402 break; | |
| 403 case GR_GL_PIXEL_UNPACK_BUFFER: | |
| 404 id = fCurrPixelUnpackBuffer; | |
| 405 break; | |
| 406 } | |
| 407 | |
| 408 if (id > 0) { | |
| 409 // We just ignore the offset and length here. | |
| 410 BufferObj* buffer = fBufferManager.lookUp(id); | |
| 411 SkASSERT(!buffer->mapped()); | |
| 412 buffer->setMapped(true); | |
| 413 return buffer->dataPtr(); | |
| 414 } | |
| 415 return nullptr; | |
| 416 } | |
| 417 | |
| 418 GrGLvoid* mapBuffer(GrGLenum target, GrGLenum access) override { | |
| 419 GrGLuint id = 0; | |
| 420 switch (target) { | |
| 421 case GR_GL_ARRAY_BUFFER: | |
| 422 id = fCurrArrayBuffer; | |
| 423 break; | |
| 424 case GR_GL_ELEMENT_ARRAY_BUFFER: | |
| 425 id = fCurrElementArrayBuffer; | |
| 426 break; | |
| 427 case GR_GL_PIXEL_PACK_BUFFER: | |
| 428 id = fCurrPixelPackBuffer; | |
| 429 break; | |
| 430 case GR_GL_PIXEL_UNPACK_BUFFER: | |
| 431 id = fCurrPixelUnpackBuffer; | |
| 432 break; | |
| 433 } | |
| 434 | |
| 435 if (id > 0) { | |
| 436 BufferObj* buffer = fBufferManager.lookUp(id); | |
| 437 SkASSERT(!buffer->mapped()); | |
| 438 buffer->setMapped(true); | |
| 439 return buffer->dataPtr(); | |
| 440 } | |
| 441 | |
| 442 SkASSERT(false); | |
| 443 return nullptr; // no buffer bound to target | |
| 444 } | |
| 445 | |
| 446 GrGLboolean unmapBuffer(GrGLenum target) override { | |
| 447 GrGLuint id = 0; | |
| 448 switch (target) { | |
| 449 case GR_GL_ARRAY_BUFFER: | |
| 450 id = fCurrArrayBuffer; | |
| 451 break; | |
| 452 case GR_GL_ELEMENT_ARRAY_BUFFER: | |
| 453 id = fCurrElementArrayBuffer; | |
| 454 break; | |
| 455 case GR_GL_PIXEL_PACK_BUFFER: | |
| 456 id = fCurrPixelPackBuffer; | |
| 457 break; | |
| 458 case GR_GL_PIXEL_UNPACK_BUFFER: | |
| 459 id = fCurrPixelUnpackBuffer; | |
| 460 break; | |
| 461 } | |
| 462 if (id > 0) { | |
| 463 BufferObj* buffer = fBufferManager.lookUp(id); | |
| 464 SkASSERT(buffer->mapped()); | |
| 465 buffer->setMapped(false); | |
| 466 return GR_GL_TRUE; | |
| 467 } | |
| 468 | |
| 469 GrAlwaysAssert(false); | |
| 470 return GR_GL_FALSE; // GR_GL_INVALID_OPERATION; | |
| 471 } | |
| 472 | |
| 473 GrGLvoid getBufferParameteriv(GrGLenum target, GrGLenum pname, GrGLint* para
ms) override { | |
| 474 switch (pname) { | |
| 475 case GR_GL_BUFFER_MAPPED: { | |
| 476 *params = GR_GL_FALSE; | |
| 477 GrGLuint id = 0; | |
| 478 switch (target) { | |
| 479 case GR_GL_ARRAY_BUFFER: | |
| 480 id = fCurrArrayBuffer; | |
| 481 break; | |
| 482 case GR_GL_ELEMENT_ARRAY_BUFFER: | |
| 483 id = fCurrElementArrayBuffer; | |
| 484 break; | |
| 485 case GR_GL_PIXEL_PACK_BUFFER: | |
| 486 id = fCurrPixelPackBuffer; | |
| 487 break; | |
| 488 case GR_GL_PIXEL_UNPACK_BUFFER: | |
| 489 id = fCurrPixelUnpackBuffer; | |
| 490 break; | |
| 491 } | |
| 492 if (id > 0) { | |
| 493 BufferObj* buffer = fBufferManager.lookUp(id); | |
| 494 if (buffer->mapped()) { | |
| 495 *params = GR_GL_TRUE; | |
| 496 } | |
| 497 } | |
| 498 break; } | |
| 499 default: | |
| 500 SkFAIL("Unexpected pname to GetBufferParamateriv"); | |
| 501 break; | |
| 502 } | |
| 503 }; | |
| 504 | |
| 505 private: | |
| 506 BufferManager fBufferManager; | |
| 507 GrGLuint fCurrArrayBuffer; | |
| 508 GrGLuint fCurrElementArrayBuffer; | |
| 509 GrGLuint fCurrPixelPackBuffer; | |
| 510 GrGLuint fCurrPixelUnpackBuffer; | |
| 511 GrGLuint fCurrProgramID; | |
| 512 GrGLuint fCurrShaderID; | |
| 513 GrGLuint fCurrGenericID; | |
| 514 GrGLuint fCurrUniformLocation; | |
| 515 | |
| 516 // the OpenGLES 2.0 spec says this must be >= 128 | |
| 517 static const GrGLint kDefaultMaxVertexUniformVectors = 128; | |
| 518 | |
| 519 // the OpenGLES 2.0 spec says this must be >=16 | |
| 520 static const GrGLint kDefaultMaxFragmentUniformVectors = 16; | |
| 521 | |
| 522 // the OpenGLES 2.0 spec says this must be >= 8 | |
| 523 static const GrGLint kDefaultMaxVertexAttribs = 8; | |
| 524 | |
| 525 // the OpenGLES 2.0 spec says this must be >= 8 | |
| 526 static const GrGLint kDefaultMaxVaryingVectors = 8; | |
| 527 | |
| 528 static const char* kExtensions[]; | |
| 529 | |
| 530 static const GrGLubyte* CombinedExtensionString() { | |
| 531 static SkString gExtString; | |
| 532 static SkMutex gMutex; | |
| 533 gMutex.acquire(); | |
| 534 if (0 == gExtString.size()) { | |
| 535 int i = 0; | |
| 536 while (kExtensions[i]) { | |
| 537 if (i > 0) { | |
| 538 gExtString.append(" "); | |
| 539 } | |
| 540 gExtString.append(kExtensions[i]); | |
| 541 ++i; | |
| 542 } | |
| 543 } | |
| 544 gMutex.release(); | |
| 545 return (const GrGLubyte*) gExtString.c_str(); | |
| 546 } | |
| 547 | |
| 548 GrGLvoid genGenericIds(GrGLsizei n, GrGLuint* ids) { | |
| 549 for (int i = 0; i < n; ++i) { | |
| 550 ids[i] = ++fCurrGenericID; | |
| 551 } | |
| 552 } | |
| 553 | |
| 554 GrGLvoid getInfoLog(GrGLuint object, GrGLsizei bufsize, GrGLsizei* length, | |
| 555 char* infolog) { | |
| 556 if (length) { | |
| 557 *length = 0; | |
| 558 } | |
| 559 if (bufsize > 0) { | |
| 560 *infolog = 0; | |
| 561 } | |
| 562 } | |
| 563 | |
| 564 GrGLvoid getShaderOrProgramiv(GrGLuint object, GrGLenum pname, GrGLint* par
ams) { | |
| 565 switch (pname) { | |
| 566 case GR_GL_LINK_STATUS: // fallthru | |
| 567 case GR_GL_COMPILE_STATUS: | |
| 568 *params = GR_GL_TRUE; | |
| 569 break; | |
| 570 case GR_GL_INFO_LOG_LENGTH: | |
| 571 *params = 0; | |
| 572 break; | |
| 573 // we don't expect any other pnames | |
| 574 default: | |
| 575 SkFAIL("Unexpected pname to GetProgramiv"); | |
| 576 break; | |
| 577 } | |
| 578 } | |
| 579 | |
| 580 template <typename T> | |
| 581 void queryResult(GrGLenum GLtarget, GrGLenum pname, T *params) { | |
| 582 switch (pname) { | |
| 583 case GR_GL_QUERY_RESULT_AVAILABLE: | |
| 584 *params = GR_GL_TRUE; | |
| 585 break; | |
| 586 case GR_GL_QUERY_RESULT: | |
| 587 *params = 0; | |
| 588 break; | |
| 589 default: | |
| 590 SkFAIL("Unexpected pname passed to GetQueryObject."); | |
| 591 break; | |
| 592 } | |
| 593 } | |
| 594 | |
| 595 typedef GrGLTestInterface INHERITED; | |
| 596 }; | |
| 597 | |
| 598 const char* NullInterface::kExtensions[] = { | |
| 599 "GL_ARB_framebuffer_object", | |
| 600 "GL_ARB_blend_func_extended", | |
| 601 "GL_ARB_timer_query", | |
| 602 "GL_ARB_draw_buffers", | |
| 603 "GL_ARB_occlusion_query", | |
| 604 "GL_EXT_stencil_wrap", | |
| 605 nullptr, // signifies the end of the array. | |
| 606 }; | |
| 607 | |
| 608 class NullGLContext : public sk_gpu_test::GLContext { | |
| 609 public: | |
| 610 NullGLContext() { this->init(new NullInterface); } | |
| 611 ~NullGLContext() override { this->teardown(); } | |
| 612 | |
| 613 private: | |
| 614 void onPlatformMakeCurrent() const override {}; | |
| 615 void onPlatformSwapBuffers() const override {} | |
| 616 GrGLFuncPtr onPlatformGetProcAddress(const char*) const override { return nu
llptr; } | |
| 617 }; | |
| 618 } // anonymous namespace | |
| 619 | |
| 620 namespace sk_gpu_test { | |
| 621 GLContext* CreateNullGLContext() { | |
| 622 GLContext* ctx = new NullGLContext(); | |
| 623 if (ctx->isValid()) { | |
| 624 return ctx; | |
| 625 } | |
| 626 delete ctx; | |
| 627 return nullptr; | |
| 628 } | |
| 629 } // namespace sk_gpu_test | |
| 630 | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1849463002:
rename sk_gpu_test::GLContext to sk_gpu_test::GLTestContext (Closed)
Base URL: https://chromium.googlesource.com/skia.git@move