1 #ifndef _ESEXTCGEOMETRYSHADERCLIPPING_HPP 2 #define _ESEXTCGEOMETRYSHADERCLIPPING_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 28 namespace glcts 29 { 30 /** Implementation of "Group 8" from CTS_EXT_geometry_shader. Description follows: 31 * 32 * 1. Make sure that, should geometry shader be present in the pipeline, 33 * vertices that are outside clipping region are not discarded but are 34 * passed down to geometry shader for further processing. 35 * 36 * Category: API; 37 * Functional Test. 38 * 39 * Create a program object and a fragment, geometry and a vertex shader 40 * object: 41 * 42 * - Vertex shader should set gl_Position to (-10, -10, -10, 0). 43 * - Geometry shader object should accept points and output triangle strips 44 * (a maximum of 4 vertices). It should emit following vertices: 45 * 46 * 1) (-1, -1, 0, 1) 47 * 2) (-1, 1, 0, 1) 48 * 3) ( 1, -1, 0, 1) 49 * 4) ( 1, 1, 0, 1) 50 * 51 * - Fragment shader object should store (0, 1, 0, 0) to result variable. 52 * 53 * These shaders should be attached to the program object and compiled. The 54 * program object should be accordingly configured and linked. 55 * 56 * The test should generate a vertex array object and bind it. 57 * 58 * The test should then clear the draw buffer with red color (1, 0, 0, 0). 59 * Afterward, it should activate the program object and run it for a single 60 * point. The contents of the draw buffer should then be read. The test 61 * passes if the draw buffer contains a green color, fails otherwise. 62 * 63 **/ 64 class GeometryShaderClipping : public TestCaseBase 65 { 66 public: 67 /* Public methods */ 68 GeometryShaderClipping(Context& context, const ExtParameters& extParams, const char* name, const char* description); 69 ~GeometryShaderClipping()70 virtual ~GeometryShaderClipping() 71 { 72 } 73 74 virtual void deinit(void); 75 virtual IterateResult iterate(void); 76 77 private: 78 /* Private variables */ 79 static const char* m_fs_code; 80 static const char* m_vs_code; 81 static const char* m_gs_code; 82 83 static const int m_texture_height = 4; 84 static const int m_texture_width = 4; 85 static const int m_texture_n_levels = 1; 86 static const int m_texture_n_components = 4; 87 88 /* Variables for general usege*/ 89 glw::GLuint m_fbo_id; 90 glw::GLuint m_fs_id; 91 glw::GLuint m_gs_id; 92 glw::GLuint m_po_id; 93 glw::GLuint m_to_id; 94 glw::GLuint m_vao_id; 95 glw::GLuint m_vs_id; 96 }; 97 98 } // namespace glcts 99 100 #endif // _ESEXTCGEOMETRYSHADERCLIPPING_HPP 101