#pragma once #include #include #define GL_UTIL_VERTEX_ATTRIBUTE 0 #define GL_UTIL_TEX_COORD_ATTRIBUTE 1 #define check_gl() gl_util_check_error(__FILE__, __LINE__) void gl_util_check_error(const char *file, int line); GLuint gl_util_load_shader(const char *resource, GLenum type, const char **extra_sources, size_t num_extra); GLuint gl_util_link_program(GLuint *shaders, size_t num_shaders); GLuint gl_util_new_quad(); void gl_util_bind_quad(GLuint buffer); void gl_util_draw_quad(GLuint buffer);