case PIPE_PRIM_TRIANGLES:
for (i = 0; i+2 < count; i += 3) {
- TRIANGLE( DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_ALL,
- (i + 0),
- (i + 1),
- (i + 2 ));
+ if (flatfirst) {
+ /* put provoking vertex in last pos for clipper */
+ TRIANGLE( DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_ALL,
+ (i + 1),
+ (i + 2),
+ (i + 0 ));
+ }
+ else {
+ TRIANGLE( DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_ALL,
+ (i + 0),
+ (i + 1),
+ (i + 2 ));
+ }
}
break;
if (flatfirst) {
for (i = 0; i+2 < count; i++) {
TRIANGLE( DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_ALL,
- (i + 0),
(i + 1 + (i&1)),
- (i + 2 - (i&1)));
+ (i + 2 - (i&1)),
+ (i + 0) );
}
}
else {
if (flatfirst) {
for (i = 0; i+2 < count; i++) {
TRIANGLE( DRAW_PIPE_RESET_STIPPLE | DRAW_PIPE_EDGE_FLAG_ALL,
- (i + 1),
(i + 2),
- (0 ));
+ 0,
+ (i + 1) );
}
}
else {
/* These bitflags look a little odd because we submit the
* vertices as (1,2,0) to satisfy flatshade requirements.
*/
- const unsigned edge_first = DRAW_PIPE_EDGE_FLAG_2;
- const unsigned edge_middle = DRAW_PIPE_EDGE_FLAG_0;
- const unsigned edge_last = DRAW_PIPE_EDGE_FLAG_1;
+ const ushort edge_first = DRAW_PIPE_EDGE_FLAG_2;
+ const ushort edge_middle = DRAW_PIPE_EDGE_FLAG_0;
+ const ushort edge_last = DRAW_PIPE_EDGE_FLAG_1;
flags = DRAW_PIPE_RESET_STIPPLE | edge_first | edge_middle;