| #ifndef _ESEXTCTEXTUREBUFFERMAXSIZEVALIDATION_HPP |
| #define _ESEXTCTEXTUREBUFFERMAXSIZEVALIDATION_HPP |
| /*------------------------------------------------------------------------- |
| * OpenGL Conformance Test Suite |
| * ----------------------------- |
| * |
| * Copyright (c) 2014-2016 The Khronos Group Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ /*! |
| * \file |
| * \brief |
| */ /*-------------------------------------------------------------------*/ |
| |
| /*! |
| * \file esextcTextureBufferMAXSizeValidation.hpp |
| * \brief Texture Buffer Max Size Validation (Test 2) |
| */ /*-------------------------------------------------------------------*/ |
| |
| #include "../esextcTestCaseBase.hpp" |
| |
| namespace glcts |
| { |
| |
| /** Implementation of (Test 2) from CTS_EXT_texture_buffer. Description follows: |
| * |
| * Test whether texture buffer can have the maximum texture size specified for |
| * this type of texture. |
| * |
| * Category: API, Functional Test. |
| * |
| * The test should create a texture object and bind it to TEXTURE_BUFFER_EXT |
| * texture target at texture unit 0. It should also create buffer object and |
| * bind it to TEXTURE_BUFFER_EXT target. |
| * |
| * Query for the value of MAX_TEXTURE_BUFFER_SIZE_EXT using GetIntegerv function. |
| * Call glBufferData with NULL data pointer to allocate storage for the buffer |
| * object. The size of the storage should be equal to value of |
| * value(MAX_TEXTURE_BUFFER_SIZE_EXT) * sizeof(GLubyte). |
| * |
| * Map the buffer object's data store to client's address space by using |
| * glMapBufferRange function (map the whole data store). The data store should |
| * then be filled with unsigned byte values up to the size of the data store |
| * using the algorithm: |
| * |
| * data[index] = (GLubyte)(index % 256); |
| * |
| * The data store should be unmapped using glUnmapBuffer function. |
| * |
| * The buffer object should be used as texture buffer's data store by calling |
| * |
| * TexBufferEXT(TEXTURE_BUFFER_EXT, GL_R8UI, buffer_id ); |
| * |
| * Query the value of TEXTURE_BUFFER_OFFSET_EXT and TEXTURE_BUFFER_SIZE_EXT by |
| * calling the GetTexLevelParameter function. |
| * |
| * The value of TEXTURE_BUFFER_OFFSET_EXT should be equal to 0 and the value of |
| * TEXTURE_BUFFER_SIZE_EXT should be equal to value(MAX_TEXTURE_BUFFER_SIZE_EXT) |
| * * sizeof(GLubyte). |
| * |
| * Write a compute shader that defines |
| * |
| * uniform highp usamplerBuffer sampler_buffer; |
| * |
| * The shader should also define a shader storage buffer object |
| * |
| * buffer ComputeSSBO |
| * { |
| * uvec3 outValue; |
| * |
| * } computeSSBO; |
| * |
| * Work group size should be 1 x 1 x 1. |
| * |
| * Initialize a buffer object to be assigned as ssbo's data store. |
| * Bind the sampler_buffer location to texture unit 0. |
| * |
| * Perform the following calculations: |
| * |
| * computeSSBO.outValue.x = uint( textureSize(sampler_buffer) ); |
| * computeSSBO.outValue.y = uint( texelFetch( sampler_buffer, 0 ).x ); |
| * computeSSBO.outValue.z = |
| * uint( texelFetch( sampler_buffer, computeSSBO.outValue.x - 1 ).x ); |
| * |
| * Call: |
| * |
| * glDispatchCompute(1, 1, 1); |
| * glMemoryBarrier(GL_BUFFER_UPDATE_BARRIER_BIT); |
| * |
| * The test passes if |
| * |
| * outValue.x == value(MAX_TEXTURE_BUFFER_SIZE_EXT) |
| * outValue.y == 0 |
| * outValue.z == ((value(MAX_TEXTURE_BUFFER_SIZE_EXT)-1) % 256). |
| */ |
| class TextureBufferMAXSizeValidation : public TestCaseBase |
| { |
| public: |
| /* Public methods */ |
| TextureBufferMAXSizeValidation(Context& context, const ExtParameters& extParams, const char* name, |
| const char* description); |
| |
| virtual ~TextureBufferMAXSizeValidation() |
| { |
| } |
| |
| virtual void deinit(void); |
| virtual IterateResult iterate(void); |
| |
| private: |
| /* Private methods */ |
| void initTest(void); |
| const char* getComputeShaderCode(void); |
| |
| /* Static constant variables */ |
| static const glw::GLuint m_n_vec_components; |
| |
| /* Variables for general usage */ |
| glw::GLuint m_cs_id; |
| glw::GLint m_max_tex_buffer_size; |
| glw::GLuint m_po_id; |
| glw::GLuint m_ssbo_id; |
| glw::GLuint m_tbo_id; |
| glw::GLuint m_tbo_tex_id; |
| }; |
| |
| } // namespace glcts |
| |
| #endif // _ESEXTCTEXTUREBUFFERMAXSIZEVALIDATION_HPP |