+extern void GLAPIENTRY
+_mesa_NamedFramebufferReadBuffer(GLuint framebuffer, GLenum src);
+
+extern void GLAPIENTRY
+_mesa_FramebufferDrawBufferEXT(GLuint framebuffer, GLenum buf);
+
+extern void GLAPIENTRY
+_mesa_FramebufferReadBufferEXT(GLuint framebuffer, GLenum buf);
+
+extern void GLAPIENTRY
+_mesa_FramebufferDrawBuffersEXT(GLuint framebuffer, GLsizei n,
+ const GLenum *bufs);