nvfx: support clip planes sensibly and fix them on nv30

Before, we were discarding the compiled vertex program on each
vertex program change.

Now we compile the program as if there were 6 clip planes and
dynamically patch in an "end program" bit at the right place.

Also, nv30 should now work.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/gallium/drivers/nvfx/nvfx_context.h b/src/gallium/drivers/nvfx/nvfx_context.h
index 2134f3c386..680f4c6ce0 100644
--- a/src/gallium/drivers/nvfx/nvfx_context.h
+++ b/src/gallium/drivers/nvfx/nvfx_context.h
@@ -134,6 +134,7 @@ struct nvfx_context {
 	struct nvfx_screen *screen;
 
 	unsigned is_nv4x; /* either 0 or ~0 */
+	boolean use_vp_clipping;
 
 	struct draw_context *draw;
 	struct blitter_context* blitter;