_swrast_read_rgba_span(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLuint n, GLint x, GLint y, GLvoid *rgba);
-extern void
-_swrast_get_values(struct gl_context *ctx, struct gl_renderbuffer *rb,
- GLuint count, const GLint x[], const GLint y[],
- void *values, GLuint valueSize);
-
-extern void
-_swrast_get_row(struct gl_context *ctx, struct gl_renderbuffer *rb,
- GLuint count, GLint x, GLint y,
- GLvoid *values, GLuint valueSize);
-
-
extern void *
_swrast_get_dest_rgba(struct gl_context *ctx, struct gl_renderbuffer *rb,
SWspan *span);