printf("texture units: %d\n", GET_INTEGER(GL_MAX_TEXTURE_UNITS));
printf("max texture size: %d\n", GET_INTEGER(GL_MAX_TEXTURE_SIZE));
printf("texture units: %d\n", GET_INTEGER(GL_MAX_TEXTURE_UNITS));
printf("max texture size: %d\n", GET_INTEGER(GL_MAX_TEXTURE_SIZE));