1 /*------------------------------------------------------------------------- 2 * drawElements Quality Program OpenGL ES 3.1 Module 3 * ------------------------------------------------- 4 * 5 * Copyright 2014 The Android Open Source Project 6 * 7 * Licensed under the Apache License, Version 2.0 (the "License"); 8 * you may not use this file except in compliance with the License. 9 * You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, software 14 * distributed under the License is distributed on an "AS IS" BASIS, 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 * See the License for the specific language governing permissions and 17 * limitations under the License. 18 * 19 *//*! 20 * \file 21 * \brief Multisample tests 22 *//*--------------------------------------------------------------------*/ 23 24 #include "es31fMultisampleTests.hpp" 25 #include "tcuRenderTarget.hpp" 26 #include "tcuVector.hpp" 27 #include "tcuSurface.hpp" 28 #include "tcuImageCompare.hpp" 29 #include "tcuStringTemplate.hpp" 30 #include "gluPixelTransfer.hpp" 31 #include "gluRenderContext.hpp" 32 #include "gluCallLogWrapper.hpp" 33 #include "gluObjectWrapper.hpp" 34 #include "gluShaderProgram.hpp" 35 #include "glwFunctions.hpp" 36 #include "glwEnums.hpp" 37 #include "deRandom.hpp" 38 #include "deStringUtil.hpp" 39 #include "deString.h" 40 #include "deMath.h" 41 42 using namespace glw; 43 44 using tcu::TestLog; 45 using tcu::Vec2; 46 using tcu::Vec3; 47 using tcu::Vec4; 48 49 namespace deqp 50 { 51 namespace gles31 52 { 53 namespace Functional 54 { 55 namespace 56 { 57 58 using std::map; 59 using std::string; 60 61 static std::string sampleMaskToString (const std::vector<deUint32>& bitfield, int numBits) 62 { 63 std::string result(numBits, '0'); 64 65 // move from back to front and set chars to 1 66 for (int wordNdx = 0; wordNdx < (int)bitfield.size(); ++wordNdx) 67 { 68 for (int bit = 0; bit < 32; ++bit) 69 { 70 const int targetCharNdx = numBits - (wordNdx*32+bit) - 1; 71 72 // beginning of the string reached 73 if (targetCharNdx < 0) 74 return result; 75 76 if ((bitfield[wordNdx] >> bit) & 0x01) 77 result[targetCharNdx] = '1'; 78 } 79 } 80 81 return result; 82 } 83 84 /*--------------------------------------------------------------------*//*! 85 * \brief Returns the number of words needed to represent mask of given length 86 *//*--------------------------------------------------------------------*/ 87 static int getEffectiveSampleMaskWordCount (int highestBitNdx) 88 { 89 const int wordSize = 32; 90 const int maskLen = highestBitNdx + 1; 91 92 return ((maskLen - 1) / wordSize) + 1; // round_up(mask_len / wordSize) 93 } 94 95 /*--------------------------------------------------------------------*//*! 96 * \brief Creates sample mask with all less significant bits than nthBit set 97 *//*--------------------------------------------------------------------*/ 98 static std::vector<deUint32> genAllSetToNthBitSampleMask (int nthBit) 99 { 100 const int wordSize = 32; 101 const int numWords = getEffectiveSampleMaskWordCount(nthBit - 1); 102 const deUint32 topWordBits = (deUint32)(nthBit - (numWords - 1) * wordSize); 103 std::vector<deUint32> mask (numWords); 104 105 for (int ndx = 0; ndx < numWords - 1; ++ndx) 106 mask[ndx] = 0xFFFFFFFF; 107 108 mask[numWords - 1] = deBitMask32(0, (int)topWordBits); 109 return mask; 110 } 111 112 class SamplePosQueryCase : public TestCase 113 { 114 public: 115 SamplePosQueryCase (Context& context, const char* name, const char* desc); 116 private: 117 void init (void); 118 IterateResult iterate (void); 119 }; 120 121 SamplePosQueryCase::SamplePosQueryCase (Context& context, const char* name, const char* desc) 122 : TestCase(context, name, desc) 123 { 124 } 125 126 void SamplePosQueryCase::init (void) 127 { 128 if (m_context.getRenderTarget().getNumSamples() == 0) 129 throw tcu::NotSupportedError("No multisample buffers"); 130 } 131 132 SamplePosQueryCase::IterateResult SamplePosQueryCase::iterate (void) 133 { 134 glu::CallLogWrapper gl (m_context.getRenderContext().getFunctions(), m_testCtx.getLog()); 135 bool error = false; 136 137 gl.enableLogging(true); 138 139 for (int ndx = 0; ndx < m_context.getRenderTarget().getNumSamples(); ++ndx) 140 { 141 tcu::Vec2 samplePos = tcu::Vec2(-1, -1); 142 143 gl.glGetMultisamplefv(GL_SAMPLE_POSITION, ndx, samplePos.getPtr()); 144 GLU_EXPECT_NO_ERROR(gl.glGetError(), "getMultisamplefv"); 145 146 // check value range 147 if (samplePos.x() < 0.0f || samplePos.x() > 1.0f || 148 samplePos.y() < 0.0f || samplePos.y() > 1.0f) 149 { 150 m_testCtx.getLog() << tcu::TestLog::Message << "Sample " << ndx << " is not in valid range [0,1], got " << samplePos << tcu::TestLog::EndMessage; 151 error = true; 152 } 153 } 154 155 if (!error) 156 m_testCtx.setTestResult(QP_TEST_RESULT_PASS, "Pass"); 157 else 158 m_testCtx.setTestResult(QP_TEST_RESULT_FAIL, "Invalid sample pos"); 159 160 return STOP; 161 } 162 163 /*--------------------------------------------------------------------*//*! 164 * \brief Abstract base class handling common stuff for default fbo multisample cases. 165 *//*--------------------------------------------------------------------*/ 166 class DefaultFBOMultisampleCase : public TestCase 167 { 168 public: 169 DefaultFBOMultisampleCase (Context& context, const char* name, const char* desc, int desiredViewportSize); 170 virtual ~DefaultFBOMultisampleCase (void); 171 172 virtual void init (void); 173 virtual void deinit (void); 174 175 protected: 176 void renderTriangle (const Vec3& p0, const Vec3& p1, const Vec3& p2, const Vec4& c0, const Vec4& c1, const Vec4& c2) const; 177 void renderTriangle (const Vec2& p0, const Vec2& p1, const Vec2& p2, const Vec4& c0, const Vec4& c1, const Vec4& c2) const; 178 void renderTriangle (const Vec2& p0, const Vec2& p1, const Vec2& p2, const Vec4& color) const; 179 void renderQuad (const Vec2& p0, const Vec2& p1, const Vec2& p2, const Vec2& p3, const Vec4& c0, const Vec4& c1, const Vec4& c2, const Vec4& c3) const; 180 void renderQuad (const Vec2& p0, const Vec2& p1, const Vec2& p2, const Vec2& p3, const Vec4& color) const; 181 182 void randomizeViewport (void); 183 void readImage (tcu::Surface& dst) const; 184 185 int m_numSamples; 186 187 int m_viewportSize; 188 189 private: 190 DefaultFBOMultisampleCase (const DefaultFBOMultisampleCase& other); 191 DefaultFBOMultisampleCase& operator= (const DefaultFBOMultisampleCase& other); 192 193 const int m_desiredViewportSize; 194 195 glu::ShaderProgram* m_program; 196 int m_attrPositionLoc; 197 int m_attrColorLoc; 198 199 int m_viewportX; 200 int m_viewportY; 201 de::Random m_rnd; 202 203 bool m_initCalled; 204 }; 205 206 DefaultFBOMultisampleCase::DefaultFBOMultisampleCase (Context& context, const char* name, const char* desc, int desiredViewportSize) 207 : TestCase (context, name, desc) 208 , m_numSamples (0) 209 , m_viewportSize (0) 210 , m_desiredViewportSize (desiredViewportSize) 211 , m_program (DE_NULL) 212 , m_attrPositionLoc (-1) 213 , m_attrColorLoc (-1) 214 , m_viewportX (0) 215 , m_viewportY (0) 216 , m_rnd (deStringHash(name)) 217 , m_initCalled (false) 218 { 219 } 220 221 DefaultFBOMultisampleCase::~DefaultFBOMultisampleCase (void) 222 { 223 DefaultFBOMultisampleCase::deinit(); 224 } 225 226 void DefaultFBOMultisampleCase::init (void) 227 { 228 const bool isES32 = glu::contextSupports(m_context.getRenderContext().getType(), glu::ApiType::es(3, 2)); 229 map<string, string> args; 230 args["GLSL_VERSION_DECL"] = isES32 ? getGLSLVersionDeclaration(glu::GLSL_VERSION_320_ES) : getGLSLVersionDeclaration(glu::GLSL_VERSION_310_ES); 231 232 static const char* vertShaderSource = 233 "${GLSL_VERSION_DECL}\n" 234 "in highp vec4 a_position;\n" 235 "in mediump vec4 a_color;\n" 236 "out mediump vec4 v_color;\n" 237 "void main()\n" 238 "{\n" 239 " gl_Position = a_position;\n" 240 " v_color = a_color;\n" 241 "}\n"; 242 243 static const char* fragShaderSource = 244 "${GLSL_VERSION_DECL}\n" 245 "in mediump vec4 v_color;\n" 246 "layout(location = 0) out mediump vec4 o_color;\n" 247 "void main()\n" 248 "{\n" 249 " o_color = v_color;\n" 250 "}\n"; 251 252 TestLog& log = m_testCtx.getLog(); 253 const glw::Functions& gl = m_context.getRenderContext().getFunctions(); 254 255 if (m_context.getRenderTarget().getNumSamples() <= 1) 256 throw tcu::NotSupportedError("No multisample buffers"); 257 258 m_initCalled = true; 259 260 // Query and log number of samples per pixel. 261 262 gl.getIntegerv(GL_SAMPLES, &m_numSamples); 263 GLU_EXPECT_NO_ERROR(gl.getError(), "getIntegerv(GL_SAMPLES)"); 264 log << TestLog::Message << "GL_SAMPLES = " << m_numSamples << TestLog::EndMessage; 265 266 // Prepare program. 267 268 DE_ASSERT(!m_program); 269 270 m_program = new glu::ShaderProgram(m_context.getRenderContext(), glu::ProgramSources() 271 << glu::VertexSource(tcu::StringTemplate(vertShaderSource).specialize(args)) 272 << glu::FragmentSource(tcu::StringTemplate(fragShaderSource).specialize(args))); 273 if (!m_program->isOk()) 274 throw tcu::TestError("Failed to compile program", DE_NULL, __FILE__, __LINE__); 275 276 m_attrPositionLoc = gl.getAttribLocation(m_program->getProgram(), "a_position"); 277 m_attrColorLoc = gl.getAttribLocation(m_program->getProgram(), "a_color"); 278 GLU_EXPECT_NO_ERROR(gl.getError(), "getAttribLocation"); 279 280 if (m_attrPositionLoc < 0 || m_attrColorLoc < 0) 281 { 282 delete m_program; 283 throw tcu::TestError("Invalid attribute locations", DE_NULL, __FILE__, __LINE__); 284 } 285 286 // Get suitable viewport size. 287 288 m_viewportSize = de::min<int>(m_desiredViewportSize, de::min(m_context.getRenderTarget().getWidth(), m_context.getRenderTarget().getHeight())); 289 randomizeViewport(); 290 } 291 292 void DefaultFBOMultisampleCase::deinit (void) 293 { 294 // Do not try to call GL functions during case list creation 295 if (!m_initCalled) 296 return; 297 298 delete m_program; 299 m_program = DE_NULL; 300 } 301 302 void DefaultFBOMultisampleCase::renderTriangle (const Vec3& p0, const Vec3& p1, const Vec3& p2, const Vec4& c0, const Vec4& c1, const Vec4& c2) const 303 { 304 const float vertexPositions[] = 305 { 306 p0.x(), p0.y(), p0.z(), 1.0f, 307 p1.x(), p1.y(), p1.z(), 1.0f, 308 p2.x(), p2.y(), p2.z(), 1.0f 309 }; 310 const float vertexColors[] = 311 { 312 c0.x(), c0.y(), c0.z(), c0.w(), 313 c1.x(), c1.y(), c1.z(), c1.w(), 314 c2.x(), c2.y(), c2.z(), c2.w(), 315 }; 316 317 const glw::Functions& gl = m_context.getRenderContext().getFunctions(); 318 glu::Buffer vtxBuf (m_context.getRenderContext()); 319 glu::Buffer colBuf (m_context.getRenderContext()); 320 glu::VertexArray vao (m_context.getRenderContext()); 321 322 gl.bindVertexArray(*vao); 323 GLU_EXPECT_NO_ERROR(gl.getError(), "bindVertexArray"); 324 325 gl.bindBuffer(GL_ARRAY_BUFFER, *vtxBuf); 326 gl.bufferData(GL_ARRAY_BUFFER, sizeof(vertexPositions), &vertexPositions[0], GL_STATIC_DRAW); 327 GLU_EXPECT_NO_ERROR(gl.getError(), "vtx buf"); 328 329 gl.enableVertexAttribArray(m_attrPositionLoc); 330 gl.vertexAttribPointer(m_attrPositionLoc, 4, GL_FLOAT, false, 0, DE_NULL); 331 GLU_EXPECT_NO_ERROR(gl.getError(), "vtx vertexAttribPointer"); 332 333 gl.bindBuffer(GL_ARRAY_BUFFER, *colBuf); 334 gl.bufferData(GL_ARRAY_BUFFER, sizeof(vertexColors), &vertexColors[0], GL_STATIC_DRAW); 335 GLU_EXPECT_NO_ERROR(gl.getError(), "col buf"); 336 337 gl.enableVertexAttribArray(m_attrColorLoc); 338 gl.vertexAttribPointer(m_attrColorLoc, 4, GL_FLOAT, false, 0, DE_NULL); 339 GLU_EXPECT_NO_ERROR(gl.getError(), "col vertexAttribPointer"); 340 341 gl.useProgram(m_program->getProgram()); 342 gl.drawArrays(GL_TRIANGLES, 0, 3); 343 GLU_EXPECT_NO_ERROR(gl.getError(), "drawArrays"); 344 } 345 346 void DefaultFBOMultisampleCase::renderTriangle (const Vec2& p0, const Vec2& p1, const Vec2& p2, const Vec4& c0, const Vec4& c1, const Vec4& c2) const 347 { 348 renderTriangle(Vec3(p0.x(), p0.y(), 0.0f), 349 Vec3(p1.x(), p1.y(), 0.0f), 350 Vec3(p2.x(), p2.y(), 0.0f), 351 c0, c1, c2); 352 } 353 354 void DefaultFBOMultisampleCase::renderTriangle (const Vec2& p0, const Vec2& p1, const Vec2& p2, const Vec4& color) const 355 { 356 renderTriangle(p0, p1, p2, color, color, color); 357 } 358 359 void DefaultFBOMultisampleCase::renderQuad (const Vec2& p0, const Vec2& p1, const Vec2& p2, const Vec2& p3, const Vec4& c0, const Vec4& c1, const Vec4& c2, const Vec4& c3) const 360 { 361 renderTriangle(p0, p1, p2, c0, c1, c2); 362 renderTriangle(p2, p1, p3, c2, c1, c3); 363 } 364 365 void DefaultFBOMultisampleCase::renderQuad (const Vec2& p0, const Vec2& p1, const Vec2& p2, const Vec2& p3, const Vec4& color) const 366 { 367 renderQuad(p0, p1, p2, p3, color, color, color, color); 368 } 369 370 void DefaultFBOMultisampleCase::randomizeViewport (void) 371 { 372 const glw::Functions& gl = m_context.getRenderContext().getFunctions(); 373 374 m_viewportX = m_rnd.getInt(0, m_context.getRenderTarget().getWidth() - m_viewportSize); 375 m_viewportY = m_rnd.getInt(0, m_context.getRenderTarget().getHeight() - m_viewportSize); 376 377 gl.viewport(m_viewportX, m_viewportY, m_viewportSize, m_viewportSize); 378 GLU_EXPECT_NO_ERROR(gl.getError(), "viewport"); 379 } 380 381 void DefaultFBOMultisampleCase::readImage (tcu::Surface& dst) const 382 { 383 glu::readPixels(m_context.getRenderContext(), m_viewportX, m_viewportY, dst.getAccess()); 384 } 385 386 /*--------------------------------------------------------------------*//*! 387 * \brief Tests coverage mask inversion validity. 388 * 389 * Tests that the coverage masks obtained by masks set with glSampleMaski(mask) 390 * and glSampleMaski(~mask) are indeed each others' inverses. 391 * 392 * This is done by drawing a pattern, with varying coverage values, 393 * overlapped by a pattern that has inverted masks and is otherwise 394 * identical. The resulting image is compared to one obtained by drawing 395 * the same pattern but with all-ones coverage masks. 396 *//*--------------------------------------------------------------------*/ 397 class MaskInvertCase : public DefaultFBOMultisampleCase 398 { 399 public: 400 MaskInvertCase (Context& context, const char* name, const char* description); 401 ~MaskInvertCase (void) {} 402 403 void init (void); 404 IterateResult iterate (void); 405 406 private: 407 void drawPattern (bool invert) const; 408 }; 409 410 MaskInvertCase::MaskInvertCase (Context& context, const char* name, const char* description) 411 : DefaultFBOMultisampleCase (context, name, description, 256) 412 { 413 } 414 415 void MaskInvertCase::init (void) 416 { 417 const glw::Functions& gl = m_context.getRenderContext().getFunctions(); 418 419 // check the test is even possible 420 421 GLint maxSampleMaskWords = 0; 422 gl.getIntegerv(GL_MAX_SAMPLE_MASK_WORDS, &maxSampleMaskWords); 423 if (getEffectiveSampleMaskWordCount(m_numSamples - 1) > maxSampleMaskWords) 424 throw tcu::NotSupportedError("Test requires larger GL_MAX_SAMPLE_MASK_WORDS"); 425 426 // normal init 427 DefaultFBOMultisampleCase::init(); 428 } 429 430 MaskInvertCase::IterateResult MaskInvertCase::iterate (void) 431 { 432 const glw::Functions& gl = m_context.getRenderContext().getFunctions(); 433 TestLog& log = m_testCtx.getLog(); 434 tcu::Surface renderedImgNoSampleCoverage (m_viewportSize, m_viewportSize); 435 tcu::Surface renderedImgSampleCoverage (m_viewportSize, m_viewportSize); 436 437 randomizeViewport(); 438 439 gl.enable(GL_BLEND); 440 gl.blendEquation(GL_FUNC_ADD); 441 gl.blendFunc(GL_ONE, GL_ONE); 442 GLU_EXPECT_NO_ERROR(gl.getError(), "set blend"); 443 log << TestLog::Message << "Additive blending enabled in order to detect (erroneously) overlapping samples" << TestLog::EndMessage; 444 445 log << TestLog::Message << "Clearing color to all-zeros" << TestLog::EndMessage; 446 gl.clearColor(0.0f, 0.0f, 0.0f, 0.0f); 447 gl.clear(GL_COLOR_BUFFER_BIT); 448 GLU_EXPECT_NO_ERROR(gl.getError(), "clear"); 449 450 log << TestLog::Message << "Drawing the pattern with GL_SAMPLE_MASK disabled" << TestLog::EndMessage; 451 drawPattern(false); 452 readImage(renderedImgNoSampleCoverage); 453 454 log << TestLog::Image("RenderedImageNoSampleMask", "Rendered image with GL_SAMPLE_MASK disabled", renderedImgNoSampleCoverage, QP_IMAGE_COMPRESSION_MODE_PNG); 455 456 log << TestLog::Message << "Clearing color to all-zeros" << TestLog::EndMessage; 457 gl.clear(GL_COLOR_BUFFER_BIT); 458 GLU_EXPECT_NO_ERROR(gl.getError(), "clear"); 459 460 gl.enable(GL_SAMPLE_MASK); 461 GLU_EXPECT_NO_ERROR(gl.getError(), "glEnable(GL_SAMPLE_MASK)"); 462 463 log << TestLog::Message << "Drawing the pattern with GL_SAMPLE_MASK enabled, using non-inverted sample masks" << TestLog::EndMessage; 464 drawPattern(false); 465 log << TestLog::Message << "Drawing the pattern with GL_SAMPLE_MASK enabled, using inverted sample masks" << TestLog::EndMessage; 466 drawPattern(true); 467 468 readImage(renderedImgSampleCoverage); 469 470 log << TestLog::Image("RenderedImageSampleMask", "Rendered image with GL_SAMPLE_MASK enabled", renderedImgSampleCoverage, QP_IMAGE_COMPRESSION_MODE_PNG); 471 472 bool passed = tcu::pixelThresholdCompare(log, 473 "CoverageVsNoCoverage", 474 "Comparison of same pattern with GL_SAMPLE_MASK disabled and enabled", 475 renderedImgNoSampleCoverage, 476 renderedImgSampleCoverage, 477 tcu::RGBA(0), 478 tcu::COMPARE_LOG_ON_ERROR); 479 480 if (passed) 481 log << TestLog::Message << "Success: The two images rendered are identical" << TestLog::EndMessage; 482 483 m_context.getTestContext().setTestResult(passed ? QP_TEST_RESULT_PASS : QP_TEST_RESULT_FAIL, 484 passed ? "Passed" : "Failed"); 485 486 return STOP; 487 } 488 489 void MaskInvertCase::drawPattern (bool invert) const 490 { 491 const int numTriangles = 25; 492 const glw::Functions& gl = m_context.getRenderContext().getFunctions(); 493 494 for (int triNdx = 0; triNdx < numTriangles; triNdx++) 495 { 496 const float angle0 = 2.0f*DE_PI * (float)triNdx / (float)numTriangles; 497 const float angle1 = 2.0f*DE_PI * ((float)triNdx + 0.5f) / (float)numTriangles; 498 const Vec4 color = Vec4(0.4f + (float)triNdx/(float)numTriangles*0.6f, 499 0.5f + (float)triNdx/(float)numTriangles*0.3f, 500 0.6f - (float)triNdx/(float)numTriangles*0.5f, 501 0.7f - (float)triNdx/(float)numTriangles*0.7f); 502 503 504 const int wordCount = getEffectiveSampleMaskWordCount(m_numSamples - 1); 505 const GLbitfield finalWordBits = m_numSamples - 32 * ((m_numSamples-1) / 32); 506 const GLbitfield finalWordMask = (GLbitfield)deBitMask32(0, (int)finalWordBits); 507 508 for (int wordNdx = 0; wordNdx < wordCount; ++wordNdx) 509 { 510 const GLbitfield rawMask = (GLbitfield)deUint32Hash(wordNdx * 32 + triNdx); 511 const GLbitfield mask = (invert) ? (~rawMask) : (rawMask); 512 const bool isFinalWord = (wordNdx + 1) == wordCount; 513 const GLbitfield maskMask = (isFinalWord) ? (finalWordMask) : (0xFFFFFFFFUL); // maskMask prevents setting coverage bits higher than sample count 514 515 gl.sampleMaski(wordNdx, mask & maskMask); 516 } 517 GLU_EXPECT_NO_ERROR(gl.getError(), "glSampleMaski"); 518 519 renderTriangle(Vec2(0.0f, 0.0f), 520 Vec2(deFloatCos(angle0)*0.95f, deFloatSin(angle0)*0.95f), 521 Vec2(deFloatCos(angle1)*0.95f, deFloatSin(angle1)*0.95f), 522 color); 523 } 524 } 525 526 /*--------------------------------------------------------------------*//*! 527 * \brief Tests coverage mask generation proportionality property. 528 * 529 * Tests that the number of coverage bits in a coverage mask set with 530 * glSampleMaski is, on average, proportional to the number of set bits. 531 * Draws multiple frames, each time increasing the number of mask bits set 532 * and checks that the average color is changing appropriately. 533 *//*--------------------------------------------------------------------*/ 534 class MaskProportionalityCase : public DefaultFBOMultisampleCase 535 { 536 public: 537 MaskProportionalityCase (Context& context, const char* name, const char* description); 538 ~MaskProportionalityCase (void) {} 539 540 void init (void); 541 542 IterateResult iterate (void); 543 544 private: 545 int m_numIterations; 546 int m_currentIteration; 547 548 deInt32 m_previousIterationColorSum; 549 }; 550 551 MaskProportionalityCase::MaskProportionalityCase (Context& context, const char* name, const char* description) 552 : DefaultFBOMultisampleCase (context, name, description, 32) 553 , m_numIterations (-1) 554 , m_currentIteration (0) 555 , m_previousIterationColorSum (-1) 556 { 557 } 558 559 void MaskProportionalityCase::init (void) 560 { 561 const glw::Functions& gl = m_context.getRenderContext().getFunctions(); 562 TestLog& log = m_testCtx.getLog(); 563 564 // check the test is even possible 565 GLint maxSampleMaskWords = 0; 566 gl.getIntegerv(GL_MAX_SAMPLE_MASK_WORDS, &maxSampleMaskWords); 567 if (getEffectiveSampleMaskWordCount(m_numSamples - 1) > maxSampleMaskWords) 568 throw tcu::NotSupportedError("Test requires larger GL_MAX_SAMPLE_MASK_WORDS"); 569 570 DefaultFBOMultisampleCase::init(); 571 572 // set state 573 gl.enable(GL_SAMPLE_MASK); 574 GLU_EXPECT_NO_ERROR(gl.getError(), "glEnable(GL_SAMPLE_MASK)"); 575 log << TestLog::Message << "GL_SAMPLE_MASK is enabled" << TestLog::EndMessage; 576 577 m_numIterations = m_numSamples + 1; 578 579 randomizeViewport(); // \note Using the same viewport for every iteration since coverage mask may depend on window-relative pixel coordinate. 580 } 581 582 MaskProportionalityCase::IterateResult MaskProportionalityCase::iterate (void) 583 { 584 const glw::Functions& gl = m_context.getRenderContext().getFunctions(); 585 TestLog& log = m_testCtx.getLog(); 586 tcu::Surface renderedImg (m_viewportSize, m_viewportSize); 587 deInt32 numPixels = (deInt32)renderedImg.getWidth()*(deInt32)renderedImg.getHeight(); 588 589 DE_ASSERT(m_numIterations >= 0); 590 591 log << TestLog::Message << "Clearing color to black" << TestLog::EndMessage; 592 gl.colorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); 593 gl.clearColor(0.0f, 0.0f, 0.0f, 1.0f); 594 gl.clear(GL_COLOR_BUFFER_BIT); 595 GLU_EXPECT_NO_ERROR(gl.getError(), "clear"); 596 597 // Draw quad. 598 599 { 600 const Vec2 pt0 (-1.0f, -1.0f); 601 const Vec2 pt1 ( 1.0f, -1.0f); 602 const Vec2 pt2 (-1.0f, 1.0f); 603 const Vec2 pt3 ( 1.0f, 1.0f); 604 Vec4 quadColor (1.0f, 0.0f, 0.0f, 1.0f); 605 const std::vector<deUint32> sampleMask = genAllSetToNthBitSampleMask(m_currentIteration); 606 607 DE_ASSERT(m_currentIteration <= m_numSamples + 1); 608 609 log << TestLog::Message << "Drawing a red quad using sample mask 0b" << sampleMaskToString(sampleMask, m_numSamples) << TestLog::EndMessage; 610 611 for (int wordNdx = 0; wordNdx < getEffectiveSampleMaskWordCount(m_numSamples - 1); ++wordNdx) 612 { 613 const GLbitfield mask = (wordNdx < (int)sampleMask.size()) ? ((GLbitfield)(sampleMask[wordNdx])) : (0); 614 615 gl.sampleMaski(wordNdx, mask); 616 GLU_EXPECT_NO_ERROR(gl.getError(), "glSampleMaski"); 617 } 618 619 renderQuad(pt0, pt1, pt2, pt3, quadColor); 620 } 621 622 // Read ang log image. 623 624 readImage(renderedImg); 625 626 log << TestLog::Image("RenderedImage", "Rendered image", renderedImg, QP_IMAGE_COMPRESSION_MODE_PNG); 627 628 // Compute average red component in rendered image. 629 630 deInt32 sumRed = 0; 631 632 for (int y = 0; y < renderedImg.getHeight(); y++) 633 for (int x = 0; x < renderedImg.getWidth(); x++) 634 sumRed += renderedImg.getPixel(x, y).getRed(); 635 636 log << TestLog::Message << "Average red color component: " << de::floatToString((float)sumRed / 255.0f / (float)numPixels, 2) << TestLog::EndMessage; 637 638 // Check if average color has decreased from previous frame's color. 639 640 if (sumRed < m_previousIterationColorSum) 641 { 642 log << TestLog::Message << "Failure: Current average red color component is lower than previous" << TestLog::EndMessage; 643 m_context.getTestContext().setTestResult(QP_TEST_RESULT_FAIL, "Failed"); 644 return STOP; 645 } 646 647 // Check if coverage mask is not all-zeros if alpha or coverage value is 0 (or 1, if inverted). 648 649 if (m_currentIteration == 0 && sumRed != 0) 650 { 651 log << TestLog::Message << "Failure: Image should be completely black" << TestLog::EndMessage; 652 m_context.getTestContext().setTestResult(QP_TEST_RESULT_FAIL, "Failed"); 653 return STOP; 654 } 655 656 if (m_currentIteration == m_numIterations-1 && sumRed != 0xff*numPixels) 657 { 658 log << TestLog::Message << "Failure: Image should be completely red" << TestLog::EndMessage; 659 660 m_context.getTestContext().setTestResult(QP_TEST_RESULT_FAIL, "Failed"); 661 return STOP; 662 } 663 664 m_previousIterationColorSum = sumRed; 665 666 m_currentIteration++; 667 668 if (m_currentIteration >= m_numIterations) 669 { 670 log << TestLog::Message << "Success: Number of coverage mask bits set appears to be, on average, proportional to the number of set sample mask bits" << TestLog::EndMessage; 671 m_context.getTestContext().setTestResult(QP_TEST_RESULT_PASS, "Passed"); 672 return STOP; 673 } 674 else 675 return CONTINUE; 676 } 677 678 /*--------------------------------------------------------------------*//*! 679 * \brief Tests coverage mask generation constancy property. 680 * 681 * Tests that the coverage mask created by GL_SAMPLE_MASK is constant at 682 * given pixel coordinates. Draws two quads, with the second one fully 683 * overlapping the first one such that at any given pixel, both quads have 684 * the same coverage mask value. This way, if the constancy property is 685 * fulfilled, only the second quad should be visible. 686 *//*--------------------------------------------------------------------*/ 687 class MaskConstancyCase : public DefaultFBOMultisampleCase 688 { 689 public: 690 enum CaseBits 691 { 692 CASEBIT_ALPHA_TO_COVERAGE = 1, //!< Use alpha-to-coverage. 693 CASEBIT_SAMPLE_COVERAGE = 2, //!< Use sample coverage. 694 CASEBIT_SAMPLE_COVERAGE_INVERTED = 4, //!< Inverted sample coverage. 695 CASEBIT_SAMPLE_MASK = 8, //!< Use sample mask. 696 }; 697 698 MaskConstancyCase (Context& context, const char* name, const char* description, deUint32 typeBits); 699 ~MaskConstancyCase (void) {} 700 701 void init (void); 702 IterateResult iterate (void); 703 704 private: 705 const bool m_isAlphaToCoverageCase; 706 const bool m_isSampleCoverageCase; 707 const bool m_isInvertedSampleCoverageCase; 708 const bool m_isSampleMaskCase; 709 }; 710 711 MaskConstancyCase::MaskConstancyCase (Context& context, const char* name, const char* description, deUint32 typeBits) 712 : DefaultFBOMultisampleCase (context, name, description, 256) 713 , m_isAlphaToCoverageCase (0 != (typeBits & CASEBIT_ALPHA_TO_COVERAGE)) 714 , m_isSampleCoverageCase (0 != (typeBits & CASEBIT_SAMPLE_COVERAGE)) 715 , m_isInvertedSampleCoverageCase (0 != (typeBits & CASEBIT_SAMPLE_COVERAGE_INVERTED)) 716 , m_isSampleMaskCase (0 != (typeBits & CASEBIT_SAMPLE_MASK)) 717 { 718 // CASEBIT_SAMPLE_COVERAGE_INVERT => CASEBIT_SAMPLE_COVERAGE 719 DE_ASSERT((typeBits & CASEBIT_SAMPLE_COVERAGE) || ~(typeBits & CASEBIT_SAMPLE_COVERAGE_INVERTED)); 720 DE_ASSERT(m_isSampleMaskCase); // no point testing non-sample-mask cases, they are checked already in gles3 721 } 722 723 void MaskConstancyCase::init (void) 724 { 725 const glw::Functions& gl = m_context.getRenderContext().getFunctions(); 726 727 // check the test is even possible 728 if (m_isSampleMaskCase) 729 { 730 GLint maxSampleMaskWords = 0; 731 gl.getIntegerv(GL_MAX_SAMPLE_MASK_WORDS, &maxSampleMaskWords); 732 if (getEffectiveSampleMaskWordCount(m_numSamples - 1) > maxSampleMaskWords) 733 throw tcu::NotSupportedError("Test requires larger GL_MAX_SAMPLE_MASK_WORDS"); 734 } 735 736 // normal init 737 DefaultFBOMultisampleCase::init(); 738 } 739 740 MaskConstancyCase::IterateResult MaskConstancyCase::iterate (void) 741 { 742 const glw::Functions& gl = m_context.getRenderContext().getFunctions(); 743 TestLog& log = m_testCtx.getLog(); 744 tcu::Surface renderedImg (m_viewportSize, m_viewportSize); 745 746 randomizeViewport(); 747 748 log << TestLog::Message << "Clearing color to black" << TestLog::EndMessage; 749 gl.clearColor(0.0f, 0.0f, 0.0f, 1.0f); 750 gl.clear(GL_COLOR_BUFFER_BIT); 751 GLU_EXPECT_NO_ERROR(gl.getError(), "clear"); 752 753 if (m_isAlphaToCoverageCase) 754 { 755 gl.enable(GL_SAMPLE_ALPHA_TO_COVERAGE); 756 gl.colorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_FALSE); 757 GLU_EXPECT_NO_ERROR(gl.getError(), "enable GL_SAMPLE_ALPHA_TO_COVERAGE"); 758 759 log << TestLog::Message << "GL_SAMPLE_ALPHA_TO_COVERAGE is enabled" << TestLog::EndMessage; 760 log << TestLog::Message << "Color mask is TRUE, TRUE, TRUE, FALSE" << TestLog::EndMessage; 761 } 762 763 if (m_isSampleCoverageCase) 764 { 765 gl.enable(GL_SAMPLE_COVERAGE); 766 GLU_EXPECT_NO_ERROR(gl.getError(), "enable GL_SAMPLE_COVERAGE"); 767 768 log << TestLog::Message << "GL_SAMPLE_COVERAGE is enabled" << TestLog::EndMessage; 769 } 770 771 if (m_isSampleMaskCase) 772 { 773 gl.enable(GL_SAMPLE_MASK); 774 GLU_EXPECT_NO_ERROR(gl.getError(), "enable GL_SAMPLE_MASK"); 775 776 log << TestLog::Message << "GL_SAMPLE_MASK is enabled" << TestLog::EndMessage; 777 } 778 779 log << TestLog::Message 780 << "Drawing several green quads, each fully overlapped by a red quad with the same " 781 << (m_isAlphaToCoverageCase ? "alpha" : "") 782 << (m_isAlphaToCoverageCase && (m_isSampleCoverageCase || m_isSampleMaskCase) ? " and " : "") 783 << (m_isInvertedSampleCoverageCase ? "inverted " : "") 784 << (m_isSampleCoverageCase ? "sample coverage" : "") 785 << (m_isSampleCoverageCase && m_isSampleMaskCase ? " and " : "") 786 << (m_isSampleMaskCase ? "sample mask" : "") 787 << " values" 788 << TestLog::EndMessage; 789 790 const int numQuadRowsCols = m_numSamples*4; 791 792 for (int row = 0; row < numQuadRowsCols; row++) 793 { 794 for (int col = 0; col < numQuadRowsCols; col++) 795 { 796 float x0 = (float)(col+0) / (float)numQuadRowsCols * 2.0f - 1.0f; 797 float x1 = (float)(col+1) / (float)numQuadRowsCols * 2.0f - 1.0f; 798 float y0 = (float)(row+0) / (float)numQuadRowsCols * 2.0f - 1.0f; 799 float y1 = (float)(row+1) / (float)numQuadRowsCols * 2.0f - 1.0f; 800 const Vec4 baseGreen (0.0f, 1.0f, 0.0f, 0.0f); 801 const Vec4 baseRed (1.0f, 0.0f, 0.0f, 0.0f); 802 Vec4 alpha0 (0.0f, 0.0f, 0.0f, m_isAlphaToCoverageCase ? (float)col / (float)(numQuadRowsCols-1) : 1.0f); 803 Vec4 alpha1 (0.0f, 0.0f, 0.0f, m_isAlphaToCoverageCase ? (float)row / (float)(numQuadRowsCols-1) : 1.0f); 804 805 if (m_isSampleCoverageCase) 806 { 807 float value = (float)(row*numQuadRowsCols + col) / (float)(numQuadRowsCols*numQuadRowsCols-1); 808 gl.sampleCoverage(m_isInvertedSampleCoverageCase ? 1.0f - value : value, m_isInvertedSampleCoverageCase ? GL_TRUE : GL_FALSE); 809 GLU_EXPECT_NO_ERROR(gl.getError(), "glSampleCoverage"); 810 } 811 812 if (m_isSampleMaskCase) 813 { 814 const int wordCount = getEffectiveSampleMaskWordCount(m_numSamples - 1); 815 const GLbitfield finalWordBits = m_numSamples - 32 * ((m_numSamples-1) / 32); 816 const GLbitfield finalWordMask = (GLbitfield)deBitMask32(0, (int)finalWordBits); 817 818 for (int wordNdx = 0; wordNdx < wordCount; ++wordNdx) 819 { 820 const GLbitfield mask = (GLbitfield)deUint32Hash((col << (m_numSamples / 2)) ^ row); 821 const bool isFinalWord = (wordNdx + 1) == wordCount; 822 const GLbitfield maskMask = (isFinalWord) ? (finalWordMask) : (0xFFFFFFFFUL); // maskMask prevents setting coverage bits higher than sample count 823 824 gl.sampleMaski(wordNdx, mask & maskMask); 825 GLU_EXPECT_NO_ERROR(gl.getError(), "glSampleMaski"); 826 } 827 } 828 829 renderQuad(Vec2(x0, y0), Vec2(x1, y0), Vec2(x0, y1), Vec2(x1, y1), baseGreen + alpha0, baseGreen + alpha1, baseGreen + alpha0, baseGreen + alpha1); 830 renderQuad(Vec2(x0, y0), Vec2(x1, y0), Vec2(x0, y1), Vec2(x1, y1), baseRed + alpha0, baseRed + alpha1, baseRed + alpha0, baseRed + alpha1); 831 } 832 } 833 834 readImage(renderedImg); 835 836 log << TestLog::Image("RenderedImage", "Rendered image", renderedImg, QP_IMAGE_COMPRESSION_MODE_PNG); 837 838 for (int y = 0; y < renderedImg.getHeight(); y++) 839 for (int x = 0; x < renderedImg.getWidth(); x++) 840 { 841 if (renderedImg.getPixel(x, y).getGreen() > 0) 842 { 843 log << TestLog::Message << "Failure: Non-zero green color component detected - should have been completely overwritten by red quad" << TestLog::EndMessage; 844 m_context.getTestContext().setTestResult(QP_TEST_RESULT_FAIL, "Failed"); 845 return STOP; 846 } 847 } 848 849 log << TestLog::Message 850 << "Success: Coverage mask appears to be constant at a given pixel coordinate with a given " 851 << (m_isAlphaToCoverageCase ? "alpha" : "") 852 << (m_isAlphaToCoverageCase && m_isSampleCoverageCase ? " and " : "") 853 << (m_isSampleCoverageCase ? "coverage value" : "") 854 << TestLog::EndMessage; 855 856 m_context.getTestContext().setTestResult(QP_TEST_RESULT_PASS, "Passed"); 857 858 return STOP; 859 } 860 861 /*--------------------------------------------------------------------*//*! 862 * \brief Tests that unused bits of a sample mask have no effect 863 * 864 * Tests that the bits in the sample mask with positions higher than 865 * the number of samples do not have effect. In multisample fragment 866 * operations the sample mask is ANDed with the fragment coverage value. 867 * The coverage value cannot have the corresponding bits set. 868 * 869 * This is done by drawing a quads with varying sample masks and then 870 * redrawing the quads with identical masks but with the mask's high bits 871 * having different values. Only the latter quad pattern should be visible. 872 *//*--------------------------------------------------------------------*/ 873 class SampleMaskHighBitsCase : public DefaultFBOMultisampleCase 874 { 875 public: 876 SampleMaskHighBitsCase (Context& context, const char* name, const char* description); 877 ~SampleMaskHighBitsCase (void) {} 878 879 void init (void); 880 IterateResult iterate (void); 881 }; 882 883 SampleMaskHighBitsCase::SampleMaskHighBitsCase (Context& context, const char* name, const char* description) 884 : DefaultFBOMultisampleCase(context, name, description, 256) 885 { 886 } 887 888 void SampleMaskHighBitsCase::init (void) 889 { 890 const glw::Functions& gl = m_context.getRenderContext().getFunctions(); 891 GLint maxSampleMaskWords = 0; 892 893 // check the test is even possible 894 gl.getIntegerv(GL_MAX_SAMPLE_MASK_WORDS, &maxSampleMaskWords); 895 if (getEffectiveSampleMaskWordCount(m_numSamples - 1) > maxSampleMaskWords) 896 throw tcu::NotSupportedError("Test requires larger GL_MAX_SAMPLE_MASK_WORDS"); 897 898 // normal init 899 DefaultFBOMultisampleCase::init(); 900 } 901 902 SampleMaskHighBitsCase::IterateResult SampleMaskHighBitsCase::iterate (void) 903 { 904 const glw::Functions& gl = m_context.getRenderContext().getFunctions(); 905 TestLog& log = m_testCtx.getLog(); 906 tcu::Surface renderedImg (m_viewportSize, m_viewportSize); 907 de::Random rnd (12345); 908 909 if (m_numSamples % 32 == 0) 910 { 911 log << TestLog::Message << "Sample count is multiple of word size. No unused high bits in sample mask.\nSkipping." << TestLog::EndMessage; 912 m_context.getTestContext().setTestResult(QP_TEST_RESULT_PASS, "Skipped"); 913 return STOP; 914 } 915 916 randomizeViewport(); 917 918 log << TestLog::Message << "Clearing color to black" << TestLog::EndMessage; 919 gl.clearColor(0.0f, 0.0f, 0.0f, 1.0f); 920 gl.clear(GL_COLOR_BUFFER_BIT); 921 GLU_EXPECT_NO_ERROR(gl.getError(), "clear"); 922 923 gl.enable(GL_SAMPLE_MASK); 924 GLU_EXPECT_NO_ERROR(gl.getError(), "enable GL_SAMPLE_MASK"); 925 log << TestLog::Message << "GL_SAMPLE_MASK is enabled" << TestLog::EndMessage; 926 log << TestLog::Message << "Drawing several green quads, each fully overlapped by a red quad with the same effective sample mask values" << TestLog::EndMessage; 927 928 const int numQuadRowsCols = m_numSamples*4; 929 930 for (int row = 0; row < numQuadRowsCols; row++) 931 { 932 for (int col = 0; col < numQuadRowsCols; col++) 933 { 934 float x0 = (float)(col+0) / (float)numQuadRowsCols * 2.0f - 1.0f; 935 float x1 = (float)(col+1) / (float)numQuadRowsCols * 2.0f - 1.0f; 936 float y0 = (float)(row+0) / (float)numQuadRowsCols * 2.0f - 1.0f; 937 float y1 = (float)(row+1) / (float)numQuadRowsCols * 2.0f - 1.0f; 938 const Vec4 baseGreen (0.0f, 1.0f, 0.0f, 1.0f); 939 const Vec4 baseRed (1.0f, 0.0f, 0.0f, 1.0f); 940 941 const int wordCount = getEffectiveSampleMaskWordCount(m_numSamples - 1); 942 const GLbitfield finalWordBits = m_numSamples - 32 * ((m_numSamples-1) / 32); 943 const GLbitfield finalWordMask = (GLbitfield)deBitMask32(0, (int)finalWordBits); 944 945 for (int wordNdx = 0; wordNdx < wordCount; ++wordNdx) 946 { 947 const GLbitfield mask = (GLbitfield)deUint32Hash((col << (m_numSamples / 2)) ^ row); 948 const bool isFinalWord = (wordNdx + 1) == wordCount; 949 const GLbitfield maskMask = (isFinalWord) ? (finalWordMask) : (0xFFFFFFFFUL); // maskMask is 1 on bits in lower positions than sample count 950 const GLbitfield highBits = rnd.getUint32(); 951 952 gl.sampleMaski(wordNdx, (mask & maskMask) | (highBits & ~maskMask)); 953 GLU_EXPECT_NO_ERROR(gl.getError(), "glSampleMaski"); 954 } 955 renderQuad(Vec2(x0, y0), Vec2(x1, y0), Vec2(x0, y1), Vec2(x1, y1), baseGreen, baseGreen, baseGreen, baseGreen); 956 957 for (int wordNdx = 0; wordNdx < wordCount; ++wordNdx) 958 { 959 const GLbitfield mask = (GLbitfield)deUint32Hash((col << (m_numSamples / 2)) ^ row); 960 const bool isFinalWord = (wordNdx + 1) == wordCount; 961 const GLbitfield maskMask = (isFinalWord) ? (finalWordMask) : (0xFFFFFFFFUL); // maskMask is 1 on bits in lower positions than sample count 962 const GLbitfield highBits = rnd.getUint32(); 963 964 gl.sampleMaski(wordNdx, (mask & maskMask) | (highBits & ~maskMask)); 965 GLU_EXPECT_NO_ERROR(gl.getError(), "glSampleMaski"); 966 } 967 renderQuad(Vec2(x0, y0), Vec2(x1, y0), Vec2(x0, y1), Vec2(x1, y1), baseRed, baseRed, baseRed, baseRed); 968 } 969 } 970 971 readImage(renderedImg); 972 973 log << TestLog::Image("RenderedImage", "Rendered image", renderedImg, QP_IMAGE_COMPRESSION_MODE_PNG); 974 975 for (int y = 0; y < renderedImg.getHeight(); y++) 976 for (int x = 0; x < renderedImg.getWidth(); x++) 977 { 978 if (renderedImg.getPixel(x, y).getGreen() > 0) 979 { 980 log << TestLog::Message << "Failure: Non-zero green color component detected - should have been completely overwritten by red quad. Mask unused bits have effect." << TestLog::EndMessage; 981 m_context.getTestContext().setTestResult(QP_TEST_RESULT_FAIL, "Unused mask bits modified mask"); 982 return STOP; 983 } 984 } 985 986 log << TestLog::Message << "Success: Coverage mask high bits appear to have no effect." << TestLog::EndMessage; 987 m_context.getTestContext().setTestResult(QP_TEST_RESULT_PASS, "Passed"); 988 989 return STOP; 990 } 991 992 } // anonymous 993 994 MultisampleTests::MultisampleTests (Context& context) 995 : TestCaseGroup(context, "multisample", "Multisample tests") 996 { 997 } 998 999 MultisampleTests::~MultisampleTests (void) 1000 { 1001 } 1002 1003 void MultisampleTests::init (void) 1004 { 1005 tcu::TestCaseGroup* const group = new tcu::TestCaseGroup(m_testCtx, "default_framebuffer", "Test with default framebuffer"); 1006 1007 addChild(group); 1008 1009 // .default_framebuffer 1010 { 1011 // sample positions 1012 group->addChild(new SamplePosQueryCase (m_context, "sample_position", "test SAMPLE_POSITION")); 1013 1014 // sample mask 1015 group->addChild(new MaskInvertCase (m_context, "sample_mask_sum_of_inverses", "Test that mask and its negation's sum equal the fully set mask")); 1016 group->addChild(new MaskProportionalityCase (m_context, "proportionality_sample_mask", "Test the proportionality property of GL_SAMPLE_MASK")); 1017 1018 group->addChild(new MaskConstancyCase (m_context, "constancy_sample_mask", 1019 "Test that coverage mask is constant at given coordinates with a given alpha or coverage value, using GL_SAMPLE_MASK", 1020 MaskConstancyCase::CASEBIT_SAMPLE_MASK)); 1021 group->addChild(new MaskConstancyCase (m_context, "constancy_alpha_to_coverage_sample_mask", 1022 "Test that coverage mask is constant at given coordinates with a given alpha or coverage value, using GL_SAMPLE_ALPHA_TO_COVERAGE and GL_SAMPLE_MASK", 1023 MaskConstancyCase::CASEBIT_ALPHA_TO_COVERAGE | MaskConstancyCase::CASEBIT_SAMPLE_MASK)); 1024 group->addChild(new MaskConstancyCase (m_context, "constancy_sample_coverage_sample_mask", 1025 "Test that coverage mask is constant at given coordinates with a given alpha or coverage value, using GL_SAMPLE_COVERAGE and GL_SAMPLE_MASK", 1026 MaskConstancyCase::CASEBIT_SAMPLE_COVERAGE | MaskConstancyCase::CASEBIT_SAMPLE_MASK)); 1027 group->addChild(new MaskConstancyCase (m_context, "constancy_alpha_to_coverage_sample_coverage_sample_mask", 1028 "Test that coverage mask is constant at given coordinates with a given alpha or coverage value, using GL_SAMPLE_ALPHA_TO_COVERAGE, GL_SAMPLE_COVERAGE and GL_SAMPLE_MASK", 1029 MaskConstancyCase::CASEBIT_ALPHA_TO_COVERAGE | MaskConstancyCase::CASEBIT_SAMPLE_COVERAGE | MaskConstancyCase::CASEBIT_SAMPLE_MASK)); 1030 group->addChild(new SampleMaskHighBitsCase (m_context, "sample_mask_non_effective_bits", 1031 "Test that values of unused bits of a sample mask (bit index > sample count) have no effect")); 1032 } 1033 } 1034 1035 } // Functional 1036 } // gles31 1037 } // deqp 1038
