| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Helper functions for GL. |
| |
| #ifndef GPU_COMMAND_BUFFER_TESTS_GL_TEST_UTILS_H_ |
| #define GPU_COMMAND_BUFFER_TESTS_GL_TEST_UTILS_H_ |
| |
| #include <GLES2/gl2.h> |
| #include "base/basictypes.h" |
| |
| class GLTestHelper { |
| public: |
| static const uint8 kCheckClearValue = 123u; |
| |
| static bool HasExtension(const char* extension); |
| static bool CheckGLError(const char* msg, int line); |
| |
| // Compiles a shader. |
| // Does not check for errors, always returns shader. |
| static GLuint CompileShader(GLenum type, const char* shaderSrc); |
| |
| // Compiles a shader and checks for compilation errors. |
| // Returns shader, 0 on failure. |
| static GLuint LoadShader(GLenum type, const char* shaderSrc); |
| |
| // Attaches 2 shaders and links them to a program. |
| // Does not check for errors, always returns program. |
| static GLuint LinkProgram(GLuint vertex_shader, GLuint fragment_shader); |
| |
| // Attaches 2 shaders, links them to a program, and checks for errors. |
| // Returns program, 0 on failure. |
| static GLuint SetupProgram(GLuint vertex_shader, GLuint fragment_shader); |
| |
| // Compiles 2 shaders, attaches and links them to a program |
| // Returns program, 0 on failure. |
| static GLuint LoadProgram( |
| const char* vertex_shader_source, |
| const char* fragment_shader_source); |
| |
| // Make a unit quad with position only. |
| // Returns the created buffer. |
| static GLuint SetupUnitQuad(GLint position_location); |
| |
| // Make a 6 vertex colors. |
| // Returns the created buffer. |
| static GLuint SetupColorsForUnitQuad( |
| GLint location, const GLfloat color[4], GLenum usage); |
| |
| // Checks an area of pixels for a color. |
| static bool CheckPixels( |
| GLint x, GLint y, GLsizei width, GLsizei height, GLint tolerance, |
| const uint8* color); |
| |
| // Uses ReadPixels to save an area of the current FBO/Backbuffer. |
| static bool SaveBackbufferAsBMP(const char* filename, int width, int height); |
| }; |
| |
| #endif // GPU_COMMAND_BUFFER_TESTS_GL_TEST_UTILS_H_ |