1 // Copyright (c) 2013 The Chromium OS Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "base/bind.h" 6 7 #include "glinterfacetest.h" 8 9 namespace glbench { 10 11 namespace { 12 13 // Basic shader code. 14 const char* kVertexShader = 15 "attribute vec4 c;" 16 "void main() {" 17 " gl_Position = c;" 18 "}"; 19 20 const char* kFragmentShader = 21 "uniform vec4 color;" 22 "void main() {" 23 " gl_FragColor = color;" 24 "}"; 25 26 // Vertex arrays used to draw a diamond. 27 const GLfloat kVertices[] = { 1.0, 0.0, 28 0.0, -1.0, 29 -1.0, 0.0, 30 0.0, 1.0 }; 31 const GLushort kIndices[] = { 0, 1, 2, 32 0, 2, 3 }; 33 34 } // namespace 35 36 void GLInterfaceTest::SetupGLRendering() { 37 vertex_buffer_object_ = 38 SetupVBO(GL_ARRAY_BUFFER, sizeof(kVertices), kVertices); 39 40 shader_program_ = InitShaderProgram(kVertexShader, kFragmentShader); 41 attribute_index_ = glGetAttribLocation(shader_program_, "c"); 42 glVertexAttribPointer(attribute_index_, 2, GL_FLOAT, GL_FALSE, 0, NULL); 43 glEnableVertexAttribArray(attribute_index_); 44 45 GLint color_uniform = glGetUniformLocation(shader_program_, "color"); 46 47 const GLfloat white[4] = {1.0f, 1.0f, 1.0f, 1.0f}; 48 glUniform4fv(color_uniform, 1, white); 49 50 num_indices_ = arraysize(kIndices); 51 index_buffer_object_ = 52 SetupVBO(GL_ELEMENT_ARRAY_BUFFER, sizeof(kIndices), kIndices); 53 } 54 55 void GLInterfaceTest::CleanupGLRendering() { 56 glDisableVertexAttribArray(attribute_index_); 57 glDeleteProgram(shader_program_); 58 glDeleteBuffers(1, &index_buffer_object_); 59 glDeleteBuffers(1, &vertex_buffer_object_); 60 } 61 62 bool GLInterfaceTest::Run() { 63 const std::string test_name_base = std::string(Name()) + "_"; 64 65 // Run test without GL commands. 66 render_func_.Reset(); 67 RunTest(this, (test_name_base + "nogl").c_str(), 1.0, g_width, g_height, false); 68 69 // Run main test with simple GL commands. 70 SetupGLRendering(); 71 render_func_ = base::Bind(&GLInterfaceTest::RenderGLSimple, 72 base::Unretained(this)); 73 RunTest(this, (test_name_base + "glsimple").c_str(), 1.0, g_width, g_height, false); 74 CleanupGLRendering(); 75 76 // TODO(sque): Run with complex GL commands. See crosbug.com/36746. 77 return true; 78 } 79 80 void GLInterfaceTest::RenderGLSimple() { 81 glDrawElements(GL_TRIANGLES, num_indices_, GL_UNSIGNED_SHORT, 0); 82 } 83 84 } // namespace glbench 85
