external/openglcts/modules/common/glcRobustnessTests.cpp

   1 /*-------------------------------------------------------------------------
   2  * OpenGL Conformance Test Suite
   3  * -----------------------------
   4  *
   5  * Copyright (c) 2017 The Khronos Group Inc.
   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 glcRobustnessTests.cpp
  21  * \brief Conformance tests for the Robustness feature functionality.
  22  */ /*-------------------------------------------------------------------*/
  23
  24 #include "glcRobustnessTests.hpp"
  25 #include "deSharedPtr.hpp"
  26 #include "glcRobustBufferAccessBehaviorTests.hpp"
  27 #include "gluContextInfo.hpp"
  28 #include "gluPlatform.hpp"
  29 #include "gluRenderContext.hpp"
  30 #include "glwEnums.hpp"
  31 #include "glwFunctions.hpp"
  32 #include "tcuCommandLine.hpp"
  33 #include "tcuTestLog.hpp"
  34 #include <cstring>
  35
  36 using namespace glw;
  37 using namespace glcts::RobustBufferAccessBehavior;
  38
  39 namespace glcts
  40 {
  41
  42 namespace ResetNotificationStrategy
  43 {
  44
  45 class RobustnessBase : public tcu::TestCase
  46 {
  47 public:
  48         RobustnessBase(tcu::TestContext& testCtx, const char* name, const char* description, glu::ApiType apiType);
  49
  50         glu::RenderContext* createRobustContext(glu::ResetNotificationStrategy reset);
  51
  52 private:
  53         glu::ApiType m_ApiType;
  54 };
  55
  56 RobustnessBase::RobustnessBase(tcu::TestContext& testCtx, const char* name, const char* description,
  57                                                            glu::ApiType apiType)
  58         : tcu::TestCase(testCtx, name, description), m_ApiType(apiType)
  59 {
  60 }
  61
  62 glu::RenderContext* RobustnessBase::createRobustContext(glu::ResetNotificationStrategy reset)
  63 {
  64         /* Create test context to verify if GL_KHR_robustness extension is available */
  65         {
  66                 deqp::Context context(m_testCtx, glu::ContextType(m_ApiType));
  67                 if (!context.getContextInfo().isExtensionSupported("GL_KHR_robustness") &&
  68                         !contextSupports(context.getRenderContext().getType(), glu::ApiType::es(3, 2)))
  69                 {
  70                         m_testCtx.setTestResult(QP_TEST_RESULT_NOT_SUPPORTED,
  71                                                                         "GL_KHR_robustness extension not supported");
  72                         return NULL;
  73                 }
  74         }
  75
  76         glu::RenderConfig               renderCfg(glu::ContextType(m_ApiType, glu::CONTEXT_ROBUST));
  77         const tcu::CommandLine& commandLine = m_testCtx.getCommandLine();
  78         glu::parseRenderConfig(&renderCfg, commandLine);
  79
  80         if (commandLine.getSurfaceType() == tcu::SURFACETYPE_WINDOW)
  81                 renderCfg.resetNotificationStrategy = reset;
  82         else
  83                 throw tcu::NotSupportedError("Test not supported in non-windowed context");
  84
  85         /* Try to create core/es robusness context */
  86         return createRenderContext(m_testCtx.getPlatform(), commandLine, renderCfg);
  87 }
  88
  89 class NoResetNotificationCase : public RobustnessBase
  90 {
  91         typedef glw::GLenum(GLW_APIENTRY* PFNGLGETGRAPHICSRESETSTATUS)();
  92
  93 public:
  94         NoResetNotificationCase(tcu::TestContext& testCtx, const char* name, const char* description, glu::ApiType apiType)
  95                 : RobustnessBase(testCtx, name, description, apiType)
  96         {
  97         }
  98
  99         virtual IterateResult iterate(void)
 100         {
 101                 glu::ResetNotificationStrategy  strategy = glu::RESET_NOTIFICATION_STRATEGY_NO_RESET_NOTIFICATION;
 102                 de::SharedPtr<glu::RenderContext> robustContext(createRobustContext(strategy));
 103                 if (!robustContext.get())
 104                         return STOP;
 105
 106                 PFNGLGETGRAPHICSRESETSTATUS pGetGraphicsResetStatus =
 107                         (PFNGLGETGRAPHICSRESETSTATUS)robustContext->getProcAddress("glGetGraphicsResetStatus");
 108
 109                 if (DE_NULL == pGetGraphicsResetStatus)
 110                 {
 111                         m_testCtx.setTestResult(QP_TEST_RESULT_INTERNAL_ERROR,
 112                                                                         "Pointer to function glGetGraphicsResetStatus is NULL.");
 113                         return STOP;
 114                 }
 115
 116                 glw::GLint reset = 0;
 117
 118                 const glw::Functions& gl = robustContext->getFunctions();
 119                 gl.getIntegerv(GL_RESET_NOTIFICATION_STRATEGY, &reset);
 120                 GLU_EXPECT_NO_ERROR(gl.getError(), "glGetIntegerv");
 121
 122                 if (reset != GL_NO_RESET_NOTIFICATION)
 123                 {
 124                         m_testCtx.getLog() << tcu::TestLog::Message << "Test failed! glGet returned wrong value [" << reset
 125                                                            << ", expected " << GL_NO_RESET_NOTIFICATION << "]." << tcu::TestLog::EndMessage;
 126
 127                         m_testCtx.setTestResult(QP_TEST_RESULT_FAIL, "Fail");
 128                         return STOP;
 129                 }
 130
 131                 glw::GLint status = pGetGraphicsResetStatus();
 132                 if (status != GL_NO_ERROR)
 133                 {
 134                         m_testCtx.getLog() << tcu::TestLog::Message
 135                                                            << "Test failed! glGetGraphicsResetStatus returned wrong value [" << status
 136                                                            << ", expected " << GL_NO_ERROR << "]." << tcu::TestLog::EndMessage;
 137
 138                         m_testCtx.setTestResult(QP_TEST_RESULT_FAIL, "Fail");
 139                         return STOP;
 140                 }
 141
 142                 m_testCtx.setTestResult(QP_TEST_RESULT_PASS, "Pass");
 143                 return STOP;
 144         }
 145 };
 146
 147 class LoseContextOnResetCase : public RobustnessBase
 148 {
 149 public:
 150         LoseContextOnResetCase(tcu::TestContext& testCtx, const char* name, const char* description, glu::ApiType apiType)
 151                 : RobustnessBase(testCtx, name, description, apiType)
 152         {
 153         }
 154
 155         virtual IterateResult iterate(void)
 156         {
 157                 glu::ResetNotificationStrategy  strategy = glu::RESET_NOTIFICATION_STRATEGY_LOSE_CONTEXT_ON_RESET;
 158                 de::SharedPtr<glu::RenderContext> robustContext(createRobustContext(strategy));
 159                 if (!robustContext.get())
 160                         return STOP;
 161
 162                 glw::GLint reset = 0;
 163
 164                 const glw::Functions& gl = robustContext->getFunctions();
 165                 gl.getIntegerv(GL_RESET_NOTIFICATION_STRATEGY, &reset);
 166                 GLU_EXPECT_NO_ERROR(gl.getError(), "glGetIntegerv");
 167
 168                 if (reset != GL_LOSE_CONTEXT_ON_RESET)
 169                 {
 170                         m_testCtx.getLog() << tcu::TestLog::Message << "Test failed! glGet returned wrong value [" << reset
 171                                                            << ", expected " << GL_LOSE_CONTEXT_ON_RESET << "]." << tcu::TestLog::EndMessage;
 172
 173                         m_testCtx.setTestResult(QP_TEST_RESULT_FAIL, "Fail");
 174                         return STOP;
 175                 }
 176
 177                 m_testCtx.setTestResult(QP_TEST_RESULT_PASS, "Pass");
 178                 return STOP;
 179         }
 180 };
 181
 182 } // ResetNotificationStrategy namespace
 183
 184 namespace RobustBufferAccessBehavior
 185 {
 186
 187 static deqp::Context* createContext(tcu::TestContext& testCtx, glu::ApiType apiType)
 188 {
 189         deqp::Context* context = new deqp::Context(testCtx, glu::ContextType(apiType));
 190         if (!context)
 191         {
 192                 testCtx.setTestResult(QP_TEST_RESULT_INTERNAL_ERROR, "Pointer to context is NULL.");
 193                 return DE_NULL;
 194         }
 195
 196         if (!(contextSupports(context->getRenderContext().getType(), glu::ApiType::es(3, 2)) ||
 197                   (context->getContextInfo().isExtensionSupported("GL_KHR_robustness") &&
 198                    context->getContextInfo().isExtensionSupported("GL_KHR_robust_buffer_access_behavior"))))
 199         {
 200                 testCtx.setTestResult(QP_TEST_RESULT_NOT_SUPPORTED, "Not Supported");
 201                 delete context;
 202                 return DE_NULL;
 203         }
 204
 205         return context;
 206 }
 207
 208 /** Implementation of test GetnUniformTest. Description follows:
 209  *
 210  * This test verifies if read uniform variables to the buffer with bufSize less than expected result with GL_INVALID_OPERATION error;
 211  **/
 212 class GetnUniformTest : public tcu::TestCase
 213 {
 214 public:
 215         /* Public methods */
 216         GetnUniformTest(tcu::TestContext& testCtx, glu::ApiType apiType);
 217         virtual ~GetnUniformTest()
 218         {
 219         }
 220
 221         /* Public methods inherited from TestCase */
 222         virtual tcu::TestNode::IterateResult iterate(void);
 223
 224 private:
 225         /* Private methods */
 226         std::string getComputeShader(bool glslES320);
 227
 228         bool verifyResult(const void* inputData, const void* resultData, int size, const char* method);
 229         bool verifyError(glw::GLint error, glw::GLint expectedError, const char* method);
 230
 231         glu::ApiType m_ApiType;
 232 };
 233
 234 /** Constructor
 235  *
 236  * @param context Test context
 237  **/
 238 GetnUniformTest::GetnUniformTest(tcu::TestContext& testCtx, glu::ApiType apiType)
 239         : tcu::TestCase(testCtx, "getnuniform", "Verifies if read uniform variables to the buffer with bufSize less than "
 240                                                                                         "expected result with GL_INVALID_OPERATION")
 241         , m_ApiType(apiType)
 242 {
 243         /* Nothing to be done here */
 244 }
 245
 246 /** Execute test
 247  *
 248  * @return tcu::TestNode::STOP
 249  **/
 250 tcu::TestNode::IterateResult GetnUniformTest::iterate()
 251 {
 252         de::SharedPtr<deqp::Context> context(createContext(m_testCtx, m_ApiType));
 253         if (!context.get())
 254                 return STOP;
 255
 256         /* GL funtion pointers. */
 257         typedef void(GLW_APIENTRY * PFNGLGETNUNIFORMFV)(glw::GLuint program, glw::GLint location, glw::GLsizei bufSize,
 258                                                                                                         glw::GLfloat * params);
 259         typedef void(GLW_APIENTRY * PFNGLGETNUNIFORMIV)(glw::GLuint program, glw::GLint location, glw::GLsizei bufSize,
 260                                                                                                         glw::GLint * params);
 261         typedef void(GLW_APIENTRY * PFNGLGETNUNIFORMUIV)(glw::GLuint program, glw::GLint location, glw::GLsizei bufSize,
 262                                                                                                          glw::GLuint * params);
 263
 264         /* Function pointers need to be grabbed only for GL4.5 but it is done also for ES for consistency */
 265         glu::RenderContext& renderContext   = context->getRenderContext();
 266         PFNGLGETNUNIFORMFV  pGetnUniformfv  = (PFNGLGETNUNIFORMFV)renderContext.getProcAddress("glGetnUniformfv");
 267         PFNGLGETNUNIFORMIV  pGetnUniformiv  = (PFNGLGETNUNIFORMIV)renderContext.getProcAddress("glGetnUniformiv");
 268         PFNGLGETNUNIFORMUIV pGetnUniformuiv = (PFNGLGETNUNIFORMUIV)renderContext.getProcAddress("glGetnUniformuiv");
 269
 270         if ((DE_NULL == pGetnUniformfv) || (DE_NULL == pGetnUniformiv) || (DE_NULL == pGetnUniformuiv))
 271         {
 272                 m_testCtx.setTestResult(QP_TEST_RESULT_INTERNAL_ERROR, "Pointer to function glGetnUniform* is NULL.");
 273                 return STOP;
 274         }
 275
 276         const Functions& gl = renderContext.getFunctions();
 277
 278         const GLfloat input4f[]  = { 1.0f, 5.4f, 3.14159f, 1.28f };
 279         const GLint   input3i[]  = { 10, -20, -30 };
 280         const GLuint  input4ui[] = { 10, 20, 30, 40 };
 281
 282         /* Test result indicator */
 283         bool test_result = true;
 284
 285         /* Iterate over all cases */
 286         Program program(gl);
 287
 288         /* Compute Shader */
 289         bool                       glslES320 = contextSupports(renderContext.getType(), glu::ApiType::es(3, 2));
 290         const std::string& cs            = getComputeShader(glslES320);
 291
 292         /* Shaders initialization */
 293         program.Init(cs /* cs */, "" /* fs */, "" /* gs */, "" /* tcs */, "" /* tes */, "" /* vs */);
 294         program.Use();
 295
 296         /* For gl4.5 use shader storage buffer */
 297         GLuint buf;
 298         if (!glslES320)
 299         {
 300                 gl.genBuffers(1, &buf);
 301                 GLU_EXPECT_NO_ERROR(gl.getError(), "GenBuffers");
 302
 303                 gl.bindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, buf);
 304                 GLU_EXPECT_NO_ERROR(gl.getError(), "BindBufferBase");
 305
 306                 gl.bufferData(GL_SHADER_STORAGE_BUFFER, 16, DE_NULL, GL_STREAM_DRAW);
 307                 GLU_EXPECT_NO_ERROR(gl.getError(), "BufferData");
 308         }
 309
 310         /* passing uniform values */
 311         gl.programUniform4fv(program.m_id, 11, 1, input4f);
 312         GLU_EXPECT_NO_ERROR(gl.getError(), "ProgramUniform4fv");
 313
 314         gl.programUniform3iv(program.m_id, 12, 1, input3i);
 315         GLU_EXPECT_NO_ERROR(gl.getError(), "ProgramUniform3iv");
 316
 317         gl.programUniform4uiv(program.m_id, 13, 1, input4ui);
 318         GLU_EXPECT_NO_ERROR(gl.getError(), "ProgramUniform4uiv");
 319
 320         gl.dispatchCompute(1, 1, 1);
 321         GLU_EXPECT_NO_ERROR(gl.getError(), "DispatchCompute");
 322
 323         /* veryfing gfetnUniform error messages */
 324         GLfloat result4f[4];
 325         GLint   result3i[3];
 326         GLuint  result4ui[4];
 327
 328         pGetnUniformfv(program.m_id, 11, sizeof(GLfloat) * 4, result4f);
 329         test_result = test_result &&
 330                                   verifyResult((void*)input4f, (void*)result4f, sizeof(GLfloat) * 4, "getnUniformfv [false negative]");
 331         test_result = test_result && verifyError(gl.getError(), GL_NO_ERROR, "getnUniformfv [false negative]");
 332
 333         pGetnUniformfv(program.m_id, 11, sizeof(GLfloat) * 3, result4f);
 334         test_result = test_result && verifyError(gl.getError(), GL_INVALID_OPERATION, "getnUniformfv [false positive]");
 335
 336         pGetnUniformiv(program.m_id, 12, sizeof(GLint) * 3, result3i);
 337         test_result = test_result &&
 338                                   verifyResult((void*)input3i, (void*)result3i, sizeof(GLint) * 3, "getnUniformiv [false negative]");
 339         test_result = test_result && verifyError(gl.getError(), GL_NO_ERROR, "getnUniformiv [false negative]");
 340
 341         pGetnUniformiv(program.m_id, 12, sizeof(GLint) * 2, result3i);
 342         test_result = test_result && verifyError(gl.getError(), GL_INVALID_OPERATION, "getnUniformiv [false positive]");
 343
 344         pGetnUniformuiv(program.m_id, 13, sizeof(GLuint) * 4, result4ui);
 345         test_result = test_result && verifyResult((void*)input4ui, (void*)result4ui, sizeof(GLuint) * 4,
 346                                                                                           "getnUniformuiv [false negative]");
 347         test_result = test_result && verifyError(gl.getError(), GL_NO_ERROR, "getnUniformuiv [false negative]");
 348
 349         pGetnUniformuiv(program.m_id, 13, sizeof(GLuint) * 3, result4ui);
 350         test_result = test_result && verifyError(gl.getError(), GL_INVALID_OPERATION, "getnUniformuiv [false positive]");
 351
 352         /* Set result */
 353         if (true == test_result)
 354         {
 355                 m_testCtx.setTestResult(QP_TEST_RESULT_PASS, "Pass");
 356         }
 357         else
 358         {
 359                 m_testCtx.setTestResult(QP_TEST_RESULT_FAIL, "Fail");
 360         }
 361
 362         if (!glslES320)
 363         {
 364                 gl.deleteBuffers(1, &buf);
 365         }
 366
 367         /* Done */
 368         return tcu::TestNode::STOP;
 369 }
 370
 371 std::string GetnUniformTest::getComputeShader(bool glslES320)
 372 {
 373         std::stringstream shader;
 374         shader << "#version " << (glslES320 ? "320 es\n" : "450\n");
 375         shader << "layout (local_size_x = 1, local_size_y = 1, local_size_z = 1) in;\n"
 376                           "layout (location = 11) uniform vec4 inputf;\n"
 377                           "layout (location = 12) uniform ivec3 inputi;\n"
 378                           "layout (location = 13) uniform uvec4 inputu;\n";
 379         if (glslES320)
 380         {
 381                 shader << "shared float valuef;\n"
 382                                   "shared int valuei;\n"
 383                                   "shared uint valueu;\n";
 384         }
 385         else
 386         {
 387                 shader << "layout (std140, binding = 0) buffer ssbo {"
 388                                   "   float valuef;\n"
 389                                   "   int valuei;\n"
 390                                   "   uint valueu;\n"
 391                                   "};\n";
 392         }
 393         shader << "void main()\n"
 394                           "{\n"
 395                           "   valuef = inputf.r + inputf.g + inputf.b + inputf.a;\n"
 396                           "   valuei = inputi.r + inputi.g + inputi.b;\n"
 397                           "   valueu = inputu.r + inputu.g + inputu.b + inputu.a;\n"
 398                           "}\n";
 399
 400         return shader.str();
 401 }
 402
 403 bool GetnUniformTest::verifyResult(const void* inputData, const void* resultData, int size, const char* method)
 404 {
 405         int diff = memcmp(inputData, resultData, size);
 406         if (diff != 0)
 407         {
 408                 m_testCtx.getLog() << tcu::TestLog::Message << "Test failed! " << method << " result is not as expected."
 409                                                    << tcu::TestLog::EndMessage;
 410
 411                 return false;
 412         }
 413
 414         return true;
 415 }
 416
 417 bool GetnUniformTest::verifyError(GLint error, GLint expectedError, const char* method)
 418 {
 419         if (error != expectedError)
 420         {
 421                 m_testCtx.getLog() << tcu::TestLog::Message << "Test failed! " << method << " throws unexpected error ["
 422                                                    << error << "]." << tcu::TestLog::EndMessage;
 423
 424                 return false;
 425         }
 426
 427         return true;
 428 }
 429
 430 /** Implementation of test ReadnPixelsTest. Description follows:
 431  *
 432  * This test verifies if read pixels to the buffer with bufSize less than expected result with GL_INVALID_OPERATION error;
 433  **/
 434 class ReadnPixelsTest : public tcu::TestCase
 435 {
 436 public:
 437         /* Public methods */
 438         ReadnPixelsTest(tcu::TestContext& testCtx, glu::ApiType apiType);
 439         virtual ~ReadnPixelsTest()
 440         {
 441         }
 442
 443         /* Public methods inherited from TestCase */
 444         virtual tcu::TestNode::IterateResult iterate(void);
 445
 446 private:
 447         /* Private methods */
 448         void cleanTexture(deqp::Context& context, glw::GLuint texture_id);
 449         bool verifyResults(deqp::Context& context);
 450         bool verifyError(glw::GLint error, glw::GLint expectedError, const char* method);
 451
 452         glu::ApiType m_ApiType;
 453 };
 454
 455 /** Constructor
 456  *
 457  * @param context Test context
 458  **/
 459 ReadnPixelsTest::ReadnPixelsTest(tcu::TestContext& testCtx, glu::ApiType apiType)
 460         : tcu::TestCase(testCtx, "readnpixels",
 461                                         "Verifies if read pixels to the buffer with bufSize less than expected result "
 462                                         "with GL_INVALID_OPERATION error")
 463         , m_ApiType(apiType)
 464 {
 465         /* Nothing to be done here */
 466 }
 467
 468 /** Execute test
 469  *
 470  * @return tcu::TestNode::STOP
 471  **/
 472 tcu::TestNode::IterateResult ReadnPixelsTest::iterate()
 473 {
 474         de::SharedPtr<deqp::Context> context(createContext(m_testCtx, m_ApiType));
 475         if (!context.get())
 476                 return STOP;
 477
 478         /* GL funtion pointers. */
 479         typedef void(GLW_APIENTRY * PFNGLREADNPIXELS)(glw::GLint x, glw::GLint y, glw::GLsizei width, glw::GLsizei height,
 480                                                                                                   glw::GLenum format, glw::GLenum type, glw::GLsizei bufSize,
 481                                                                                                   glw::GLvoid * data);
 482
 483         PFNGLREADNPIXELS pReadnPixels = (PFNGLREADNPIXELS)context->getRenderContext().getProcAddress("glReadnPixels");
 484
 485         if (DE_NULL == pReadnPixels)
 486         {
 487                 m_testCtx.setTestResult(QP_TEST_RESULT_INTERNAL_ERROR, "Pointer to function glReadnPixels is NULL.");
 488                 return STOP;
 489         }
 490
 491         static const GLuint elements[] = {
 492                 0, 1, 2, 0, 2, 3, 0, 3, 4, 0, 4, 5, 0, 5, 6, 0, 6, 7, 0, 7, 8, 0, 8, 1,
 493         };
 494
 495         static const GLfloat vertices[] = {
 496                 0.0f,  0.0f,  0.0f, 1.0f, /* 0 */
 497                 -1.0f, 0.0f,  0.0f, 1.0f, /* 1 */
 498                 -1.0f, 1.0f,  0.0f, 1.0f, /* 2 */
 499                 0.0f,  1.0f,  0.0f, 1.0f, /* 3 */
 500                 1.0f,  1.0f,  0.0f, 1.0f, /* 4 */
 501                 1.0f,  0.0f,  0.0f, 1.0f, /* 5 */
 502                 1.0f,  -1.0f, 0.0f, 1.0f, /* 6 */
 503                 0.0f,  -1.0f, 0.0f, 1.0f, /* 7 */
 504                 -1.0f, -1.0f, 0.0f, 1.0f, /* 8 */
 505         };
 506
 507         bool glslES320 = contextSupports(context->getRenderContext().getType(), glu::ApiType::es(3, 2));
 508         std::string fs("#version ");
 509         fs += (glslES320 ? "320 es\n" : "450\n");
 510         fs += "layout (location = 0) out lowp uvec4 out_fs_color;\n"
 511                   "\n"
 512                   "void main()\n"
 513                   "{\n"
 514                   "     out_fs_color = uvec4(1, 0, 0, 1);\n"
 515                   "}\n"
 516                   "\n";
 517
 518         std::string vs("#version ");
 519         vs += (glslES320 ? "320 es\n" : "450\n");
 520         vs += "layout (location = 0) in vec4 in_vs_position;\n"
 521                   "\n"
 522                   "void main()\n"
 523                   "{\n"
 524                   "     gl_Position = in_vs_position;\n"
 525                   "}\n"
 526                   "\n";
 527
 528         static const GLuint height       = 8;
 529         static const GLuint width         = 8;
 530         static const GLuint n_vertices = 24;
 531
 532         /* GL entry points */
 533         const Functions& gl = context->getRenderContext().getFunctions();
 534
 535         /* Test case objects */
 536         Program         program(gl);
 537         Texture         texture(gl);
 538         Buffer          elements_buffer(gl);
 539         Buffer          vertices_buffer(gl);
 540         VertexArray vao(gl);
 541
 542         /* Vertex array initialization */
 543         VertexArray::Generate(gl, vao.m_id);
 544         VertexArray::Bind(gl, vao.m_id);
 545
 546         /* Texture initialization */
 547         Texture::Generate(gl, texture.m_id);
 548         Texture::Bind(gl, texture.m_id, GL_TEXTURE_2D);
 549         Texture::Storage(gl, GL_TEXTURE_2D, 1, GL_R8UI, width, height, 0);
 550         Texture::Bind(gl, 0, GL_TEXTURE_2D);
 551
 552         /* Framebuffer initialization */
 553         GLuint fbo;
 554         gl.genFramebuffers(1, &fbo);
 555         GLU_EXPECT_NO_ERROR(gl.getError(), "GenFramebuffers");
 556         gl.bindFramebuffer(GL_FRAMEBUFFER, fbo);
 557         GLU_EXPECT_NO_ERROR(gl.getError(), "BindFramebuffer");
 558         gl.framebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture.m_id, 0);
 559         GLU_EXPECT_NO_ERROR(gl.getError(), "FramebufferTexture2D");
 560
 561         /* Buffers initialization */
 562         elements_buffer.InitData(GL_ELEMENT_ARRAY_BUFFER, GL_DYNAMIC_DRAW, sizeof(elements), elements);
 563         vertices_buffer.InitData(GL_ARRAY_BUFFER, GL_DYNAMIC_DRAW, sizeof(vertices), vertices);
 564
 565         /* Shaders initialization */
 566         program.Init("" /* cs */, fs, "" /* gs */, "" /* tcs */, "" /* tes */, vs);
 567         Program::Use(gl, program.m_id);
 568
 569         /* Vertex buffer initialization */
 570         vertices_buffer.Bind();
 571         gl.bindVertexBuffer(0 /* bindindex = location */, vertices_buffer.m_id, 0 /* offset */, 16 /* stride */);
 572         gl.vertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, 16, NULL);
 573         gl.enableVertexAttribArray(0 /* location */);
 574
 575         /* Binding elements/indices buffer */
 576         elements_buffer.Bind();
 577
 578         cleanTexture(*context, texture.m_id);
 579
 580         gl.drawElements(GL_TRIANGLES, n_vertices, GL_UNSIGNED_INT, 0 /* indices */);
 581         GLU_EXPECT_NO_ERROR(gl.getError(), "DrawElements");
 582
 583         /* Set result */
 584         if (verifyResults(*context))
 585         {
 586                 m_testCtx.setTestResult(QP_TEST_RESULT_PASS, "Pass");
 587         }
 588         else
 589         {
 590                 m_testCtx.setTestResult(QP_TEST_RESULT_FAIL, "Fail");
 591         }
 592
 593         /* Done */
 594         return tcu::TestNode::STOP;
 595 }
 596
 597 /** Fill texture with value 128
 598  *
 599  * @param texture_id Id of texture
 600  **/
 601 void ReadnPixelsTest::cleanTexture(deqp::Context& context, glw::GLuint texture_id)
 602 {
 603         static const GLuint height = 8;
 604         static const GLuint width  = 8;
 605
 606         const Functions& gl = context.getRenderContext().getFunctions();
 607
 608         GLubyte pixels[width * height];
 609         for (GLuint i = 0; i < width * height; ++i)
 610         {
 611                 pixels[i] = 64;
 612         }
 613
 614         Texture::Bind(gl, texture_id, GL_TEXTURE_2D);
 615
 616         Texture::SubImage(gl, GL_TEXTURE_2D, 0 /* level  */, 0 /* x */, 0 /* y */, 0 /* z */, width, height, 0 /* depth */,
 617                                           GL_RED_INTEGER, GL_UNSIGNED_BYTE, pixels);
 618
 619         /* Unbind */
 620         Texture::Bind(gl, 0, GL_TEXTURE_2D);
 621 }
 622
 623 /** Verifies glReadnPixels results
 624  *
 625  * @return true when glReadnPixels , false otherwise
 626  **/
 627 bool ReadnPixelsTest::verifyResults(deqp::Context& context)
 628 {
 629         static const GLuint height       = 8;
 630         static const GLuint width         = 8;
 631         static const GLuint pixel_size = 4 * sizeof(GLuint);
 632
 633         const Functions& gl = context.getRenderContext().getFunctions();
 634
 635         //Valid buffer size test
 636         const GLint bufSizeValid = width * height * pixel_size;
 637         GLubyte         pixelsValid[bufSizeValid];
 638
 639         gl.readnPixels(0, 0, width, height, GL_RGBA_INTEGER, GL_UNSIGNED_INT, bufSizeValid, pixelsValid);
 640         GLU_EXPECT_NO_ERROR(gl.getError(), "ReadnPixels");
 641
 642         //Verify glReadnPixels result
 643         for (unsigned int i = 0; i < width * height; ++i)
 644         {
 645                 const size_t offset = i * pixel_size;
 646                 const GLuint value  = *(GLuint*)(pixelsValid + offset);
 647
 648                 if (value != 1)
 649                 {
 650                         context.getTestContext().getLog() << tcu::TestLog::Message << "Invalid pixel value: " << value
 651                                                                                           << ". Offset: " << offset << tcu::TestLog::EndMessage;
 652                         return false;
 653                 }
 654         }
 655
 656         //Invalid buffer size test
 657         const GLint bufSizeInvalid = width * height * pixel_size - 1;
 658         GLubyte         pixelsInvalid[bufSizeInvalid];
 659
 660         gl.readnPixels(0, 0, width, height, GL_RGBA_INTEGER, GL_UNSIGNED_INT, bufSizeInvalid, pixelsInvalid);
 661         if (!verifyError(gl.getError(), GL_INVALID_OPERATION, "ReadnPixels [false positive]"))
 662                 return false;
 663
 664         return true;
 665 }
 666
 667 /** Verify operation errors
 668  *
 669  * @param error OpenGL ES error code
 670  * @param expectedError Expected error code
 671  * @param method Method name marker
 672  *
 673  * @return true when error is as expected, false otherwise
 674  **/
 675 bool ReadnPixelsTest::verifyError(GLint error, GLint expectedError, const char* method)
 676 {
 677         if (error != expectedError)
 678         {
 679                 m_testCtx.getLog() << tcu::TestLog::Message << "Test failed! " << method << " throws unexpected error ["
 680                                                    << error << "]." << tcu::TestLog::EndMessage;
 681
 682                 return false;
 683         }
 684
 685         return true;
 686 }
 687
 688 } // RobustBufferAccessBehavior namespace
 689
 690 RobustnessTests::RobustnessTests(tcu::TestContext& testCtx, glu::ApiType apiType)
 691         : tcu::TestCaseGroup(testCtx, "robustness",
 692                                                  "Verifies API coverage and functionality of GL_KHR_robustness extension.")
 693         , m_ApiType(apiType)
 694 {
 695 }
 696
 697 void RobustnessTests::init(void)
 698 {
 699         tcu::TestCaseGroup::init();
 700
 701         try
 702         {
 703                 addChild(new ResetNotificationStrategy::NoResetNotificationCase(
 704                         m_testCtx, "no_reset_notification", "Verifies if NO_RESET_NOTIFICATION strategy works as expected.",
 705                         m_ApiType));
 706                 addChild(new ResetNotificationStrategy::LoseContextOnResetCase(
 707                         m_testCtx, "lose_context_on_reset", "Verifies if LOSE_CONTEXT_ON_RESET strategy works as expected.",
 708                         m_ApiType));
 709
 710                 addChild(new RobustBufferAccessBehavior::GetnUniformTest(m_testCtx, m_ApiType));
 711                 addChild(new RobustBufferAccessBehavior::ReadnPixelsTest(m_testCtx, m_ApiType));
 712         }
 713         catch (...)
 714         {
 715                 // Destroy context.
 716                 tcu::TestCaseGroup::deinit();
 717                 throw;
 718         }
 719 }
 720
 721 } // glcts namespace