1 #ifndef _ESEXTCTESSELLATIONSHADERMAXPATCHVERTICES_HPP 2 #define _ESEXTCTESSELLATIONSHADERMAXPATCHVERTICES_HPP 3 /*------------------------------------------------------------------------- 4 * OpenGL Conformance Test Suite 5 * ----------------------------- 6 * 7 * Copyright (c) 2014-2016 The Khronos Group Inc. 8 * 9 * Licensed under the Apache License, Version 2.0 (the "License"); 10 * you may not use this file except in compliance with the License. 11 * You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, software 16 * distributed under the License is distributed on an "AS IS" BASIS, 17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 18 * See the License for the specific language governing permissions and 19 * limitations under the License. 20 * 21 */ /*! 22 * \file 23 * \brief 24 */ /*-------------------------------------------------------------------*/ 25 26 #include "../esextcTestCaseBase.hpp" 27 #include "esextcTessellationShaderUtils.hpp" 28 #include "gluShaderUtil.hpp" 29 #include "tcuDefs.hpp" 30 31 /*! 32 * \file esextcTessellationShaderMaxPatchVertices.hpp 33 * \brief TessellationShadeMaxPatchVertices (Test 19) 34 */ /*-------------------------------------------------------------------*/ 35 36 namespace glcts 37 { 38 39 /* Implementation for Test Case 19 40 * 41 * Make sure it is possible to use up to gl_MaxPatchVertices vertices in 42 * a patch and that the tessellation control shader, if it is present, can 43 * correctly access all of the vertices passed in a draw call. Input 44 * variables should be defined as arrays without explicit array size assigned. 45 * Test two cases: 46 * 47 * * one where the patch size is explicitly defined to be equal to 48 * gl_MaxPatchVertices (tessellation control shader is present); 49 * * another one where the patch size is implicitly assumed to be equal to 50 * gl_MaxPatchVertices (tessellation control shader is not present) (*); 51 * 52 * Technical details: 53 * 54 * 0. For each patch vertex, vec4 and ivec4 input attributes should be defined in 55 * TC. Values retrieved from these attributes should be passed to TE for XFB 56 * and then compared against reference data sets. 57 * 58 * (*) Only checked on Desktop 59 * 60 * Category: Functional Test. 61 * Priority: Must-Have 62 */ 63 class TessellationShaderMaxPatchVertices : public TestCaseBase 64 { 65 public: 66 /* Public methods */ 67 TessellationShaderMaxPatchVertices(Context &context, const ExtParameters &extParams); 68 ~TessellationShaderMaxPatchVertices()69 virtual ~TessellationShaderMaxPatchVertices() 70 { 71 } 72 73 virtual void deinit(void); 74 virtual IterateResult iterate(void); 75 76 private: 77 /* private methods */ 78 void initTest(void); 79 void initProgramObjects(void); 80 void initVertexBufferObjects(void); 81 void initTransformFeedbackBufferObjects(void); 82 void initReferenceValues(void); 83 84 bool compareResults(const char *description, glw::GLfloat ref_fv[4]); 85 bool compareResults(const char *description, glw::GLint ref_iv[4]); 86 87 /* Private variables */ 88 glw::GLuint m_bo_id_f_1; /* buffer object name for transform feedback of vec4 for case 1 */ 89 glw::GLuint m_bo_id_f_2; /* buffer object name for transform feedback of vec4 for case 2 */ 90 glw::GLuint m_bo_id_i_1; /* buffer object name for transform feedback of ivec4 for case 1 */ 91 glw::GLuint m_bo_id_i_2; /* buffer object name for transform feedback of ivec4 for case 2 */ 92 glw::GLuint m_fs_id; /* fragment shader object name */ 93 glw::GLuint m_po_id_1; /* program object name for case 1 */ 94 glw::GLuint m_po_id_2; /* program object name for case 2 */ 95 glw::GLuint m_tc_id; /* tessellation control shader object name for case 1 */ 96 glw::GLuint m_te_id; /* tessellation evaluation shader object name */ 97 glw::GLuint m_tf_id_1; /* transform feedback object name for case 1 */ 98 glw::GLuint m_tf_id_2; /* transform feedback object name for case 2 */ 99 glw::GLuint m_vs_id; /* vertex shader object name */ 100 glw::GLuint m_vao_id; /* vertex array object */ 101 102 glw::GLint m_gl_max_patch_vertices; /* GL_MAX_PATCH_VERTICES_EXT pname value */ 103 104 glw::GLuint m_patch_vertices_bo_f_id; /* buffer object name for patch vertices submission */ 105 glw::GLuint m_patch_vertices_bo_i_id; /* buffer object name for patch vertices submission */ 106 glw::GLfloat *m_patch_vertices_f; /* input array of patches for submission */ 107 glw::GLint *m_patch_vertices_i; /* input array of patches for submission */ 108 109 static const char *m_fs_code; /* fragment shader code */ 110 static const char *m_vs_code; /* vertex shader code */ 111 static const char *m_tc_code; /* tessellation control shader code */ 112 static const char *m_te_code; /* tessellation evaluation shader code */ 113 static const char *const m_tf_varyings[]; /* transform feedback varyings */ 114 115 glw::GLfloat m_ref_fv_case_1[4]; /* reference values of vec4 outputs for case 1 */ 116 glw::GLint m_ref_iv_case_1[4]; /* reference values of ivec4 outputs for case 1 */ 117 118 glw::GLfloat m_ref_fv_case_2[4]; /* reference values of vec4 outputs for case 2 */ 119 glw::GLint m_ref_iv_case_2[4]; /* reference values of ivec4 outputs for case 2 */ 120 }; 121 122 } // namespace glcts 123 124 #endif // _ESEXTCTESSELLATIONSHADERMAXPATCHVERTICES_HPP 125