// Wrapper macros for OpenGL

#define GL_STRERROR(gl_error)          ((gl_error) == GL_NO_ERROR ? "" : ": "), ((gl_error) == GL_NO_ERROR ? "" : (char *)gluErrorString(gl_error))
#define GL_ERROR(gl_error, M, ...)     EPRINT(DEBUG_LEVEL("[ERROR] ") DEBUG_LOC_FMT M "%s%s\n" DEBUG_LOC_VALS, ##__VA_ARGS__, GL_STRERROR(gl_error))
#define GL_WARN(gl_error, M, ...)      EPRINT(DEBUG_LEVEL("[WARN]  ") DEBUG_LOC_FMT M "%s%s\n" DEBUG_LOC_VALS, ##__VA_ARGS__, GL_STRERROR(gl_error))
#define GL_CHECK(M, ...)               BEGIN GLenum gl_error = glGetError(); if (gl_error != GL_NO_ERROR) { GL_ERROR(gl_error, M, ##__VA_ARGS__); goto error; } END

// Wrapper macros for GLEW

#define GLEW_STRERROR(glew_error)      ((glew_error) == GLEW_OK ? "" : ": "), ((glew_error) == GLEW_OK ? "" : (char *)glewGetErrorString(glew_error))
#define GLEW_ERROR(glew_error, M, ...) EPRINT(DEBUG_LEVEL("[ERROR] ") DEBUG_LOC_FMT M "%s%s\n" DEBUG_LOC_VALS, ##__VA_ARGS__, GLEW_STRERROR(glew_error))
#define GLEW_WARN(glew_error, M, ...)  EPRINT(DEBUG_LEVEL("[WARN]  ") DEBUG_LOC_FMT M "%s%s\n" DEBUG_LOC_VALS, ##__VA_ARGS__, GLEW_STRERROR(glew_error))

#define GLEW_CHECK(glew_error, M, ...) BEGIN if (glew_error != GLEW_OK) { GLEW_ERROR(glew_error, M, ##__VA_ARGS__); goto error; } END

#define GLEW_CHK(func, ...)            ({ typeof(func(__VA_ARGS__))rv = func(__VA_ARGS__); GLEW_CHECK(rv, #func " failed"); rv; })

#define GLEWINIT(...)                  GLEW_CHK(glewInit, __VA_ARGS__)