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shader builder
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| GLuint Graphics::build_shader_program(const char * vertex_shader_source, const char * fragment_shader_source) { | |
| // printf("Compiling shaders %s and %s\n", vertex_shader_source, fragment_shader_source); | |
| /* create program object and attach shaders */ | |
| GLuint program = glCreateProgram(); | |
| shaderAttach(program, GL_VERTEX_SHADER, vertex_shader_source); | |
| check_error(__FILE__, __LINE__); | |
| shaderAttach(program, GL_FRAGMENT_SHADER, fragment_shader_source); | |
| check_error(__FILE__, __LINE__); | |
| GLsizei result; | |
| /* link the program and make sure that there were no errors */ | |
| glLinkProgram(program); | |
| glGetProgramiv(program, GL_LINK_STATUS, &result); | |
| if(result == GL_FALSE) { | |
| GLint length; | |
| char *log; | |
| /* get the program info log */ | |
| glGetProgramiv(program, GL_INFO_LOG_LENGTH, &length); | |
| log = (char *)malloc(length); | |
| glGetProgramInfoLog(program, length, &result, log); | |
| /* print an error message and the info log */ | |
| fprintf(stderr, "sceneInit(): Program linking failed: %s\n", log); | |
| free(log); | |
| /* delete the program */ | |
| glDeleteProgram(program); | |
| program = 0; | |
| return program; | |
| } | |
| return program; | |
| } |
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