geometry shaders: make gs work with changable primitives and variable number of vertices

lots and lots of fixes for geometry shaders. in particular now we work when the gs
emits a different primitive than the one the pipeline was started with and also
we work when gs emits more vertices than would fit in the original buffer.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/gallium/auxiliary/draw/draw_pt_fetch_emit.c b/src/gallium/auxiliary/draw/draw_pt_fetch_emit.c
index 5158c6341c..c629d55563 100644
--- a/src/gallium/auxiliary/draw/draw_pt_fetch_emit.c
+++ b/src/gallium/auxiliary/draw/draw_pt_fetch_emit.c
@@ -90,6 +90,7 @@ struct fetch_emit_middle_end {
 
 static void fetch_emit_prepare( struct draw_pt_middle_end *middle,
                                 unsigned prim,
+                                unsigned out_prim,
 				unsigned opt,
                                 unsigned *max_vertices )
 {
@@ -102,7 +103,7 @@ static void fetch_emit_prepare( struct draw_pt_middle_end *middle,
 
 
    ok = draw->render->set_primitive( draw->render, 
-                                     prim );
+                                     out_prim );
    if (!ok) {
       assert(0);
       return;