/*------------------------------------------------------------------------- * 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 */ /*-------------------------------------------------------------------*/ #include "esextcGPUShader5PreciseQualifier.hpp" #include "gluContextInfo.hpp" #include "gluDefs.hpp" #include "glwEnums.hpp" #include "glwFunctions.hpp" #include "tcuTestLog.hpp" #include #include #include #include namespace glcts { /* Fragment Shader code */ const char* GPUShader5PreciseQualifier::m_fragment_shader_code = "${VERSION}\n" "\n" "${GPU_SHADER5_REQUIRE}\n" "\n" "precision highp float;\n" "\n" "out vec4 color;\n" "\n" "void main()\n" "{\n" " color = vec4(1, 1, 1, 1);\n" "}\n"; /* Vertex Shader code */ const char* GPUShader5PreciseQualifier::m_vertex_shader_code = "${VERSION}\n" "\n" "${GPU_SHADER5_REQUIRE}\n" "\n" "precision highp float;\n" "\n" "layout(location = 0) in vec4 positions;\n" "layout(location = 1) in vec4 weights;\n" "out vec4 weightedSum;\n" "\n" "void eval(in vec4 p, in vec4 w, precise out float result)\n" "{\n" " result = (p.x*w.x + p.y*w.y) + (p.z*w.z + p.w*w.w);\n" "}\n" "\n" "float eval(in vec4 p, in vec4 w)\n" "{\n" " precise float result = (p.x*w.x + p.y*w.y) + (p.z*w.z + p.w*w.w);\n" "\n" " return result;\n" "}\n" "void main()\n" "{\n" " eval(positions, weights, weightedSum.x);\n" "\n" " weightedSum.y = eval(positions, weights);\n" "\n" " precise float result = 0.0f;\n" "\n" " result = (positions.x * weights.x + positions.y * weights.y) +\n" " (positions.z * weights.z + positions.w * weights.w);\n" " weightedSum.z = result;\n" " weightedSum.w = (positions.x * weights.x + positions.y * weights.y) + \n" " (positions.z * weights.z + positions.w * weights.w);\n" "}\n"; const glw::GLuint GPUShader5PreciseQualifier::m_n_components = 4; const glw::GLuint GPUShader5PreciseQualifier::m_n_iterations = 100; const glw::GLint GPUShader5PreciseQualifier::m_position_range = 1000; /** Constructor * * @param context Test context * @param name Test case's name * @param description Test case's description **/ GPUShader5PreciseQualifier::GPUShader5PreciseQualifier(Context& context, const ExtParameters& extParams, const char* name, const char* description) : TestCaseBase(context, extParams, name, description) , m_fragment_shader_id(0) , m_program_id(0) , m_tf_buffer_id(0) , m_vao_id(0) , m_vertex_shader_id(0) , m_vertex_positions_buffer_id(0) , m_vertex_weights_buffer_id(0) { /* Nothing to be done here */ } /** Initializes GLES objects used during the test. * */ void GPUShader5PreciseQualifier::initTest(void) { /* Check if gpu_shader5 extension is supported */ if (!m_is_gpu_shader5_supported) { throw tcu::NotSupportedError(GPU_SHADER5_EXTENSION_NOT_SUPPORTED, "", __FILE__, __LINE__); } const glw::Functions& gl = m_context.getRenderContext().getFunctions(); /* Create program object */ m_program_id = gl.createProgram(); /* Setup transform feedback varyings */ const char* feedback_varyings[] = { "weightedSum" }; gl.transformFeedbackVaryings(m_program_id, 1, feedback_varyings, GL_INTERLEAVED_ATTRIBS); GLU_EXPECT_NO_ERROR(gl.getError(), "Could not set transform feedback varyings!"); /* Create shaders */ m_vertex_shader_id = gl.createShader(GL_VERTEX_SHADER); m_fragment_shader_id = gl.createShader(GL_FRAGMENT_SHADER); /* Build program */ if (!buildProgram(m_program_id, m_fragment_shader_id, 1, &m_fragment_shader_code, m_vertex_shader_id, 1, &m_vertex_shader_code)) { TCU_FAIL("Program could not have been created sucessfully from a valid vertex/geometry/fragment shader!"); } /* Generate & bind a VAO */ gl.genVertexArrays(1, &m_vao_id); gl.bindVertexArray(m_vao_id); GLU_EXPECT_NO_ERROR(gl.getError(), "Could not create a vertex array object!"); /* Create transform feedback buffer object */ gl.genBuffers(1, &m_tf_buffer_id); gl.bindBuffer(GL_ARRAY_BUFFER, m_tf_buffer_id); gl.bufferData(GL_ARRAY_BUFFER, sizeof(glw::GLfloat) * m_n_components, DE_NULL, GL_STATIC_COPY); gl.bindBuffer(GL_ARRAY_BUFFER, 0); GLU_EXPECT_NO_ERROR(gl.getError(), "Could not create buffer object!"); /* Bind buffer object to transform feedback binding point */ gl.bindBufferBase(GL_TRANSFORM_FEEDBACK_BUFFER, 0, m_tf_buffer_id); GLU_EXPECT_NO_ERROR(gl.getError(), "Could not bind buffer object to transform feedback binding point!"); /* Create positions buffer object */ gl.genBuffers(1, &m_vertex_positions_buffer_id); gl.bindBuffer(GL_ARRAY_BUFFER, m_vertex_positions_buffer_id); gl.bufferData(GL_ARRAY_BUFFER, sizeof(glw::GLfloat) * m_n_components, DE_NULL, GL_STATIC_DRAW); GLU_EXPECT_NO_ERROR(gl.getError(), "Could not create buffer object!"); /* Create weights buffer object */ gl.genBuffers(1, &m_vertex_weights_buffer_id); gl.bindBuffer(GL_ARRAY_BUFFER, m_vertex_weights_buffer_id); gl.bufferData(GL_ARRAY_BUFFER, sizeof(glw::GLfloat) * m_n_components, DE_NULL, GL_STATIC_DRAW); GLU_EXPECT_NO_ERROR(gl.getError(), "Could not create buffer object!"); gl.useProgram(m_program_id); GLU_EXPECT_NO_ERROR(gl.getError(), "Could not use a program object!"); gl.bindBuffer(GL_ARRAY_BUFFER, m_vertex_positions_buffer_id); gl.vertexAttribPointer(0 /* index */, 4 /* size */, GL_FLOAT, GL_FALSE, 0, 0); GLU_EXPECT_NO_ERROR(gl.getError(), "Could not configure vertex attribute array for positions attribute!"); gl.bindBuffer(GL_ARRAY_BUFFER, m_vertex_weights_buffer_id); gl.vertexAttribPointer(1 /* index */, 4 /* size */, GL_FLOAT, GL_FALSE, 0, 0); GLU_EXPECT_NO_ERROR(gl.getError(), "Could not configure vertex attribute array for weights attribute!"); gl.enableVertexAttribArray(0 /* index */); GLU_EXPECT_NO_ERROR(gl.getError(), "Could not enable vertex attribute array for index 0!"); gl.enableVertexAttribArray(1 /* index */); GLU_EXPECT_NO_ERROR(gl.getError(), "Could not enable vertex attribute array for index 1!"); } /** Deinitializes GLES objects created during the test. * */ void GPUShader5PreciseQualifier::deinit(void) { const glw::Functions& gl = m_context.getRenderContext().getFunctions(); /* Reset OpenGL ES state */ gl.disableVertexAttribArray(0); gl.disableVertexAttribArray(1); gl.useProgram(0); gl.bindBuffer(GL_ARRAY_BUFFER, 0); gl.bindVertexArray(0); /* Delete program object and shaders */ if (m_program_id != 0) { gl.deleteProgram(m_program_id); m_program_id = 0; } if (m_vertex_shader_id != 0) { gl.deleteShader(m_vertex_shader_id); m_vertex_shader_id = 0; } if (m_fragment_shader_id != 0) { gl.deleteShader(m_fragment_shader_id); m_fragment_shader_id = 0; } /* Delete buffer objects */ if (m_tf_buffer_id != 0) { gl.deleteBuffers(1, &m_tf_buffer_id); m_tf_buffer_id = 0; } if (m_vertex_positions_buffer_id != 0) { gl.deleteBuffers(1, &m_vertex_positions_buffer_id); m_vertex_positions_buffer_id = 0; } if (m_vertex_weights_buffer_id != 0) { gl.deleteBuffers(1, &m_vertex_weights_buffer_id); m_vertex_weights_buffer_id = 0; } /* Delete vertex array object */ if (m_vao_id != 0) { gl.deleteVertexArrays(1, &m_vao_id); m_vao_id = 0; } /* Call base class' deinit() */ TestCaseBase::deinit(); } /** Executes the test. * Sets the test result to QP_TEST_RESULT_FAIL if the test failed, QP_TEST_RESULT_PASS otherwise. * * Note the function throws exception should an error occur! * * @return STOP if the test has finished, CONTINUE to indicate iterate should be called once again. * **/ tcu::TestNode::IterateResult GPUShader5PreciseQualifier::iterate(void) { initTest(); /* Set the seed for the random generator */ randomSeed(1); glw::GLboolean test_failed = false; for (glw::GLuint test_iter = 0; test_iter < m_n_iterations; ++test_iter) { /* Create the data for positions and weights attributes */ glw::GLfloat vertex_data_positions[m_n_components]; glw::GLfloat vertex_data_weights[m_n_components]; glw::GLfloat weights_sum = 1.0f; for (glw::GLuint component_nr = 0; component_nr < m_n_components; ++component_nr) { vertex_data_positions[component_nr] = static_cast( static_cast(randomFormula(2 * m_position_range)) - m_position_range); if (component_nr != (m_n_components - 1)) { glw::GLfloat random_value = static_cast(randomFormula(m_position_range)) / static_cast(m_position_range); vertex_data_weights[component_nr] = random_value; weights_sum -= random_value; } else { vertex_data_weights[component_nr] = weights_sum; } } /* Compute forward weighted sum */ WeightedSum weighted_sum_forward[m_n_components]; drawAndGetFeedbackResult(vertex_data_positions, vertex_data_weights, weighted_sum_forward); /* Reverse the data for positions and weights attributes */ glw::GLfloat temp_value = 0.0f; for (glw::GLuint component_nr = 0; component_nr < (m_n_components / 2); ++component_nr) { temp_value = vertex_data_positions[component_nr]; vertex_data_positions[component_nr] = vertex_data_positions[m_n_components - 1 - component_nr]; vertex_data_positions[m_n_components - 1 - component_nr] = temp_value; temp_value = vertex_data_weights[component_nr]; vertex_data_weights[component_nr] = vertex_data_weights[m_n_components - 1 - component_nr]; vertex_data_weights[m_n_components - 1 - component_nr] = temp_value; } /* Compute backward weighted sum */ WeightedSum weighted_sum_backward[m_n_components]; drawAndGetFeedbackResult(vertex_data_positions, vertex_data_weights, weighted_sum_backward); /* Check if results are bitwise accurate */ if (weighted_sum_backward[0].intv != weighted_sum_backward[1].intv || weighted_sum_backward[0].intv != weighted_sum_backward[2].intv || weighted_sum_backward[0].intv != weighted_sum_forward[0].intv || weighted_sum_backward[0].intv != weighted_sum_forward[1].intv || weighted_sum_backward[0].intv != weighted_sum_forward[2].intv) { test_failed = true; break; } } if (test_failed) m_testCtx.setTestResult(QP_TEST_RESULT_FAIL, "Fail"); else m_testCtx.setTestResult(QP_TEST_RESULT_PASS, "Pass"); return STOP; } /** Draw and get feedback result * * @param vertex_data_positions data for positions attribute * @param vertex_data_weights data for weights attribute * @param feedback_result space to store result fetched via transform feedback **/ void GPUShader5PreciseQualifier::drawAndGetFeedbackResult(const glw::GLfloat* vertex_data_positions, const glw::GLfloat* vertex_data_weights, WeightedSum* feedback_result) { const glw::Functions& gl = m_context.getRenderContext().getFunctions(); gl.bindBuffer(GL_ARRAY_BUFFER, m_vertex_positions_buffer_id); gl.bufferData(GL_ARRAY_BUFFER, sizeof(glw::GLfloat) * m_n_components, vertex_data_positions, GL_STATIC_DRAW); GLU_EXPECT_NO_ERROR(gl.getError(), "Could not set buffer object's data!"); gl.bindBuffer(GL_ARRAY_BUFFER, m_vertex_weights_buffer_id); gl.bufferData(GL_ARRAY_BUFFER, sizeof(glw::GLfloat) * m_n_components, vertex_data_weights, GL_STATIC_DRAW); GLU_EXPECT_NO_ERROR(gl.getError(), "Could not set buffer object's data!"); gl.enable(GL_RASTERIZER_DISCARD); GLU_EXPECT_NO_ERROR(gl.getError(), "glEnable(GL_RASTERIZER_DISCARD) failed"); gl.beginTransformFeedback(GL_POINTS); GLU_EXPECT_NO_ERROR(gl.getError(), "glBeginTransformFeedback(GL_POINTS) failed"); gl.drawArrays(GL_POINTS, 0 /* first */, 1 /* count */); GLU_EXPECT_NO_ERROR(gl.getError(), "Rendering Failed!"); gl.endTransformFeedback(); GLU_EXPECT_NO_ERROR(gl.getError(), "glEndTransformFeedback() failed"); /* Fetch the results via transform feedback */ WeightedSum* result = (WeightedSum*)gl.mapBufferRange(GL_TRANSFORM_FEEDBACK_BUFFER, 0, sizeof(glw::GLfloat) * m_n_components, GL_MAP_READ_BIT); GLU_EXPECT_NO_ERROR(gl.getError(), "glMapBufferRange() failed"); memcpy(feedback_result, result, sizeof(glw::GLfloat) * m_n_components); gl.unmapBuffer(GL_TRANSFORM_FEEDBACK_BUFFER); GLU_EXPECT_NO_ERROR(gl.getError(), "glUnmapBuffer() failed"); gl.disable(GL_RASTERIZER_DISCARD); GLU_EXPECT_NO_ERROR(gl.getError(), "glDisable(GL_RASTERIZER_DISCARD) failed"); } } // namespace glcts