Mesa (master): draw: mask off DRAW_PIPE_FLAG_MASK bits in prim decompose code

[Brian Paul]

Module: Mesa
Branch: master
Commit: 292eecca8c4284cbb343d954b76586fcaa26de2a
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=292eecca8c4284cbb343d954b76586fcaa26de2a

Author: Brian Paul <brianp at vmware.com>
Date:   Wed Jun 23 09:19:18 2010 -0600

draw: mask off DRAW_PIPE_FLAG_MASK bits in prim decompose code

Any elt may potentially have flags bits set so mask off those bits
everywhere.

Fixes crashes with demos/gamma.c, redbook/polys.c, etc. but polygon
stippling is still broken.

---

 src/gallium/auxiliary/draw/draw_pipe.c |   50 ++++++++++++++++----------------
 1 files changed, 25 insertions(+), 25 deletions(-)

diff --git a/src/gallium/auxiliary/draw/draw_pipe.c b/src/gallium/auxiliary/draw/draw_pipe.c
index 83556f1..a8b9dc6 100644
--- a/src/gallium/auxiliary/draw/draw_pipe.c
+++ b/src/gallium/auxiliary/draw/draw_pipe.c
@@ -177,15 +177,15 @@ static void do_triangle( struct draw_context *draw,
                 ( DRAW_PIPE_RESET_STIPPLE |     \
                   DRAW_PIPE_EDGE_FLAG_0 |       \
                   DRAW_PIPE_EDGE_FLAG_1 ),      \
-                verts + stride * elts[i0],      \
-                verts + stride * elts[i1],      \
-                verts + stride * elts[i2]);     \
+                verts + stride * (elts[i0] & ~DRAW_PIPE_FLAG_MASK),     \
+                verts + stride * (elts[i1] & ~DRAW_PIPE_FLAG_MASK),     \
+                verts + stride * (elts[i2] & ~DRAW_PIPE_FLAG_MASK));    \
    do_triangle( draw,                           \
                 ( DRAW_PIPE_EDGE_FLAG_1 |       \
                   DRAW_PIPE_EDGE_FLAG_2 ),      \
-                verts + stride * elts[i0],      \
-                verts + stride * elts[i2],      \
-                verts + stride * elts[i3])
+                verts + stride * (elts[i0] & ~DRAW_PIPE_FLAG_MASK),     \
+                verts + stride * (elts[i2] & ~DRAW_PIPE_FLAG_MASK),     \
+                verts + stride * (elts[i3] & ~DRAW_PIPE_FLAG_MASK))
 
 /* emit last quad vertex as last vertex in triangles */
 #define QUAD_LAST_PV(i0,i1,i2,i3)               \
@@ -193,15 +193,15 @@ static void do_triangle( struct draw_context *draw,
                 ( DRAW_PIPE_RESET_STIPPLE |     \
                   DRAW_PIPE_EDGE_FLAG_0 |       \
                   DRAW_PIPE_EDGE_FLAG_2 ),      \
-                verts + stride * elts[i0],      \
-                verts + stride * elts[i1],      \
-                verts + stride * elts[i3]);     \
+                verts + stride * (elts[i0] & ~DRAW_PIPE_FLAG_MASK),     \
+                verts + stride * (elts[i1] & ~DRAW_PIPE_FLAG_MASK),     \
+                verts + stride * (elts[i3] & ~DRAW_PIPE_FLAG_MASK));    \
    do_triangle( draw,                           \
                 ( DRAW_PIPE_EDGE_FLAG_0 |       \
                   DRAW_PIPE_EDGE_FLAG_1 ),      \
-                verts + stride * elts[i1],      \
-                verts + stride * elts[i2],      \
-                verts + stride * elts[i3])
+                verts + stride * (elts[i1] & ~DRAW_PIPE_FLAG_MASK),     \
+                verts + stride * (elts[i2] & ~DRAW_PIPE_FLAG_MASK),     \
+                verts + stride * (elts[i3] & ~DRAW_PIPE_FLAG_MASK))
 
 #define TRIANGLE(flags,i0,i1,i2)                                        \
    do_triangle( draw,                                                   \
@@ -218,7 +218,7 @@ static void do_triangle( struct draw_context *draw,
 
 #define POINT(i0)                               \
    do_point( draw,                              \
-             verts + stride * elts[i0] )
+             verts + stride * (elts[i0] & ~DRAW_PIPE_FLAG_MASK) )
 
 #define FUNC pipe_run
 #define ARGS                                    \
@@ -296,14 +296,14 @@ void draw_pipeline_run( struct draw_context *draw,
                   DRAW_PIPE_EDGE_FLAG_0 |                        \
                   DRAW_PIPE_EDGE_FLAG_1 ),                       \
                 verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK),  \
-                verts + stride * (i1),                           \
-                verts + stride * (i2));                          \
+                verts + stride * ((i1) & ~DRAW_PIPE_FLAG_MASK),  \
+                verts + stride * ((i2) & ~DRAW_PIPE_FLAG_MASK)); \
    do_triangle( draw,                                            \
                 ( DRAW_PIPE_EDGE_FLAG_1 |                        \
                   DRAW_PIPE_EDGE_FLAG_2 ),                       \
                 verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK),  \
-                verts + stride * (i2),                           \
-                verts + stride * (i3))
+                verts + stride * ((i2) & ~DRAW_PIPE_FLAG_MASK),  \
+                verts + stride * ((i3) & ~DRAW_PIPE_FLAG_MASK))
 
 /* emit last quad vertex as last vertex in triangles */
 #define QUAD_LAST_PV(i0,i1,i2,i3)                                \
@@ -312,31 +312,31 @@ void draw_pipeline_run( struct draw_context *draw,
                   DRAW_PIPE_EDGE_FLAG_0 |                        \
                   DRAW_PIPE_EDGE_FLAG_2 ),                       \
                 verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK),  \
-                verts + stride * (i1),                           \
-                verts + stride * (i3));                          \
+                verts + stride * ((i1) & ~DRAW_PIPE_FLAG_MASK),  \
+                verts + stride * ((i3) & ~DRAW_PIPE_FLAG_MASK)); \
    do_triangle( draw,                                            \
                 ( DRAW_PIPE_EDGE_FLAG_0 |                        \
                   DRAW_PIPE_EDGE_FLAG_1 ),                       \
                 verts + stride * ((i1) & ~DRAW_PIPE_FLAG_MASK),  \
-                verts + stride * (i2),                           \
-                verts + stride * (i3))
+                verts + stride * ((i2) & ~DRAW_PIPE_FLAG_MASK),  \
+                verts + stride * ((i3) & ~DRAW_PIPE_FLAG_MASK))
 
 #define TRIANGLE(flags,i0,i1,i2)                                 \
    do_triangle( draw,                                            \
                 flags,  /* flags */                              \
                 verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK),  \
-                verts + stride * (i1),                           \
-                verts + stride * (i2))
+                verts + stride * ((i1) & ~DRAW_PIPE_FLAG_MASK),  \
+                verts + stride * ((i2) & ~DRAW_PIPE_FLAG_MASK))
 
 #define LINE(flags,i0,i1)                                   \
    do_line( draw,                                           \
             flags,                                          \
             verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK), \
-            verts + stride * (i1))
+            verts + stride * ((i1) & ~DRAW_PIPE_FLAG_MASK))
 
 #define POINT(i0)                               \
    do_point( draw,                              \
-             verts + stride * i0 )
+             verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK) )
 
 #define FUNC pipe_run_linear
 #define ARGS                                    \