_mesa_es3_error_check_format_and_type(const struct gl_context *ctx,
GLenum format, GLenum type,
GLenum internalFormat);
+extern GLint
+_mesa_base_tex_format(const struct gl_context *ctx, GLint internalFormat );
extern uint32_t
_mesa_format_from_format_and_type(GLenum format, GLenum type);