diff options
Diffstat (limited to 'src/mesa/pipe/draw/draw_clip.c')
| -rw-r--r-- | src/mesa/pipe/draw/draw_clip.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/mesa/pipe/draw/draw_clip.c b/src/mesa/pipe/draw/draw_clip.c index a23b7a28109..1396b60f45e 100644 --- a/src/mesa/pipe/draw/draw_clip.c +++ b/src/mesa/pipe/draw/draw_clip.c @@ -177,11 +177,15 @@ static INLINE void do_tri( struct draw_stage *next, static void emit_poly( struct draw_stage *stage, struct vertex_header **inlist, - unsigned n ) + unsigned n, + const struct prim_header *origPrim) { struct prim_header header; unsigned i; + /* later stages may need the determinant, but only the sign matters */ + header.det = origPrim->det; + for (i = 2; i < n; i++) { header.v[0] = inlist[0]; header.v[1] = inlist[i-1]; @@ -194,6 +198,10 @@ static void emit_poly( struct draw_stage *stage, if (i != 2) header.v[0]->edgeflag = 0; if (i != n-1) header.v[2]->edgeflag = 0; + header.edgeflags = ((header.v[0]->edgeflag << 0) | + (header.v[1]->edgeflag << 1) | + (header.v[2]->edgeflag << 2)); + stage->next->tri( stage->next, &header ); header.v[0]->edgeflag = tmp0; @@ -302,7 +310,7 @@ do_clip_tri( struct draw_stage *stage, /* Emit the polygon as triangles to the setup stage: */ if (n >= 3) - emit_poly( stage, inlist, n ); + emit_poly( stage, inlist, n, header ); } |