1 /*-------------------------------------------------------------------------
3  * -----------------------------
5  * Copyright (c) 2015-2016 The Khronos Group Inc.
11  *      http://www.apache.org/licenses/LICENSE-2.0
22  */ /*-------------------------------------------------------------------*/
69 /******************************** Coverage Tests Implementation   ********************************/
71 /** @brief API coverage tests constructor.
76 …: deqp::TestCase(context, "coverage", "Clip Distance API Coverage Test"), m_gl_max_clip_distances_…  in CoverageTest()
81 /** @brief Iterate API coverage tests.
118 /* @brief glGet GL_MAX_CLIP_DISTANCES limit coverage test.
168 /* @brief glEnable / glDisable of GL_CLIP_DISTANCEi coverage test.
219 /* @brief gl_MaxClipDistances value test in the vertex shader coverage test.
269 	/* Check results. */  in MaxClipDistancesValueInVertexShaderTest()
270 	std::vector<glw::GLint> results = vertex_buffer_object.readBuffer();  in MaxClipDistancesValueInVertexShaderTest()  local
272 	if (results.size() < 1)  in MaxClipDistancesValueInVertexShaderTest()
274 …m_testCtx.getLog() << tcu::TestLog::Message << "Results reading error." << tcu::TestLog::EndMessag…  in MaxClipDistancesValueInVertexShaderTest()
278 	if (results[0] != m_gl_max_clip_distances_value)  in MaxClipDistancesValueInVertexShaderTest()
281 …				   << "Vertex shader's gl_MaxClipDistances constant has improper value equal to " << results[0]  in MaxClipDistancesValueInVertexShaderTest()
291 /* @brief gl_MaxClipDistances value test in the fragment shader coverage test.
309 	/* Creating red-color-only frambuffer. */  in MaxClipDistancesValueInFragmentShaderTest()
348 	/* Fetch results. */  in MaxClipDistancesValueInFragmentShaderTest()
357 	/* Check results. */  in MaxClipDistancesValueInFragmentShaderTest()
373 /* @brief Vertex shader to fragment shader passing coverage test.
397 	/* Creating red-color-only frambuffer. */  in ClipDistancesValuePassing()
436 	/* Fetch results. */  in ClipDistancesValuePassing()
445 	/* Check results. */  in ClipDistancesValuePassing()
446 	glw::GLfloat results = pixels.front();  in ClipDistancesValuePassing()  local
448 	if (fabs(results - 1.f) > 0.0125)  in ClipDistancesValuePassing()
460 …shader source code to test gl_MaxClipDistances limit value in vertex shader (API Coverage Test). */
472 …shader source code to test gl_MaxClipDistances limit value in vertex shader (API Coverage Test). */
483 …ader source code to test gl_MaxClipDistances limit value in fragment shader (API Coverage Test). */
492 …ader source code to test gl_MaxClipDistances limit value in fragment shader (API Coverage Test). */
503 …lipDistance[] are passed properly to the fragment shader from vertex shader (API Coverage Test). */
519 …lipDistance[] are passed properly to the fragment shader from vertex shader (API Coverage Test). */
531 	"        if(abs(gl_ClipDistance[i] - float(i + 1) / float(gl_MaxClipDistances)) > 0.0125)\n"
598 			 m_clip_function_count -  in iterate()
638 					gl.enable(GL_CLIP_DISTANCE0 + i_clip_count - 1);  in iterate()
646 					if (!vertex_buffer_object->useAsShaderInput(program, "position", 4))  in iterate()
662 					/* Check results */  in iterate()
663 					std::vector<glw::GLfloat> results = framebuffer.readPixels();  in iterate()  local
665 					if (!checkResults(primitive_type, i_clip_function, results))  in iterate()
705  *  @param [in] clip_count                  Set all first # of gl_ClipDistance-s.
798 		data.push_back(-1.0);  in prepareGeometry()
799 		data.push_back(-1.0);  in prepareGeometry()
804 		data.push_back(-1.0);  in prepareGeometry()
805 		data.push_back(-1.0);  in prepareGeometry()
813 		data.push_back(-1.0);  in prepareGeometry()
824 /** @brief Check results fetched from framebuffer of functional test.
828  *  @param [in] results             Array with framebuffer content.
833 														std::vector<glw::GLfloat>& results)  in checkResults()  argument
836 	if (results.size() == 0)  in checkResults()
845 											  glw::GLuint(sqrt(glw::GLfloat(results.size()))) + 1 /* line integral */ :  in checkResults()
848 										 glw::GLuint(sqrt(glw::GLfloat(results.size()))) /* line integral */ :  in checkResults()
849 										 results.size() /* surface integral */);  in checkResults()
851 	for (glw::GLuint i_pixels = 0; i_pixels < results.size(); i_pixels += increment)  in checkResults()
853 		integral += results[i_pixels];  in checkResults()
858 	/* Check with results' lookup table */  in checkResults()
861 …if (fabs(m_expected_integral[i_primitive_type * m_clip_function_count + clip_function] - integral)…  in checkResults()
916 	"    return - 0.25 - 0.75 * (float(i) + 1.0) * (float(gl_VertexID) + 1.0) / (float(CLIP_COUNT) * "
928 	 1.0, -1.0              -  for VERTEX_COUNT == 2 aka GL_LINES
929 	 1.0,  0.0, -1.0        -  for VERTEX_COUNT == 3 aka GL_TRIANGLES
931 	 1.0,  0.0, -1.0,  0.0  -  for VERTEX_COUNT == 4 aka GL_QUADS */
965 /* @brief Expected results of testing integral for functional test. */
1022 /** @brief Clip Distance / Clip Vertex negative test sub-case.
1057 /** @brief Explicit redeclaration negative test sub-case.
1084 /** @brief Implicit redeclaration negative test sub-case.
1367 					const glw::GLchar* varying = i->c_str();  in linkShaders()