extern void
_mesa_update_draw_buffers(struct gl_context *ctx);
+void GLAPIENTRY
+_mesa_ReadBuffer_no_error(GLenum mode);
extern void GLAPIENTRY
_mesa_ReadBuffer( GLenum mode );
+void GLAPIENTRY
+_mesa_NamedFramebufferReadBuffer_no_error(GLuint framebuffer, GLenum src);
+
extern void GLAPIENTRY
_mesa_NamedFramebufferReadBuffer(GLuint framebuffer, GLenum src);