+extern void
+_swrast_get_values(GLcontext *ctx, struct gl_renderbuffer *rb,
+ GLuint count, const GLint x[], const GLint y[],
+ void *values, GLuint valueSize);
+
+extern void
+_swrast_put_row(GLcontext *ctx, struct gl_renderbuffer *rb,
+ GLuint count, GLint x, GLint y,
+ const GLvoid *values, GLuint valueSize);
+
+extern void
+_swrast_get_row(GLcontext *ctx, struct gl_renderbuffer *rb,
+ GLuint count, GLint x, GLint y,
+ GLvoid *values, GLuint valueSize);
+
+
+extern void *
+_swrast_get_dest_rgba(GLcontext *ctx, struct gl_renderbuffer *rb,
+ SWspan *span);
+