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test for presence of both front and back color vertex slots

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This commit is contained in:
Brian
2007-09-21 12:41:24 -06:00
parent 608914aeb0
commit ff08c7b032
1 changed files with 7 additions and 4 deletions
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src/mesa/pipe/draw/draw_twoside.c
+7 -4
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@@ -68,6 +68,9 @@ static INLINE void copy_attrib( unsigned attr_dst,
}
/**
* Copy back color(s) to front color(s).
*/
static struct vertex_header *copy_bfc( struct twoside_stage *twoside,
const struct vertex_header *v,
unsigned idx )
@@ -75,12 +78,12 @@ static struct vertex_header *copy_bfc( struct twoside_stage *twoside,
struct vertex_header *tmp = dup_vert( &twoside->stage, v, idx );
const struct draw_context *draw = twoside->stage.draw;
if (draw->attrib_front0 != -1) {
assert(draw->attrib_back0 != -1);
if (draw->attrib_front0 && draw->attrib_back0) {
assert(draw->attrib_back0);
copy_attrib(draw->attrib_front0, draw->attrib_back0, tmp);
}
if (draw->attrib_front1 != -1) {
assert(draw->attrib_back1 != -1);
if (draw->attrib_front1 && draw->attrib_back1) {
assert(draw->attrib_back1);
copy_attrib(draw->attrib_front1, draw->attrib_back1, tmp);
}