-_old_write_index_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
- const GLdepth z[], const GLfloat fog[],
- GLuint index[], const GLint coverage[],
- GLenum primitive );
-
-extern void
-_old_write_rgba_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
- const GLdepth z[], const GLfloat fog[],
- GLchan rgba[][4], const GLfloat coverage[],
- GLenum primitive );
-
-void
-_mesa_write_index_span( GLcontext *ctx, struct sw_span *span,
- GLenum primitive);