+extern void GLAPIENTRY
+_mesa_GetMultisamplefv(GLenum pname, GLuint index, GLfloat* val);
+
+extern void GLAPIENTRY
+_mesa_SampleMaski(GLuint index, GLbitfield mask);
+
+extern void GLAPIENTRY
+_mesa_MinSampleShading(GLclampf value);
+
+extern GLenum
+_mesa_check_sample_count(struct gl_context *ctx, GLenum target,
+ GLenum internalFormat, GLsizei samples);
+