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radeonsi: enable the GS tri strip adj workaround with primitive_restart 

If a primitive restart index occurs after an even number of triangles,
the workaround works.

Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8600>
This commit is contained in:
Marek Olšák 2021-01-09 16:24:42 -05:00 committed by Marge Bot
parent 888a45a362
commit 2206840f6c
1 changed files with 4 additions and 5 deletions
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9
src/gallium/drivers/radeonsi/si_state_draw.cpp
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@ -1717,13 +1717,12 @@ static void si_draw_vbo(struct pipe_context *ctx,
if (GFX_VERSION <= GFX9 && HAS_GS) {
/* Determine whether the GS triangle strip adjacency fix should
* be applied. Rotate every other triangle if
* - triangle strips with adjacency are fed to the GS and
* - primitive restart is disabled (the rotation doesn't help
* when the restart occurs after an odd number of triangles).
* be applied. Rotate every other triangle if triangle strips with
* adjacency are fed to the GS. This doesn't work if primitive
* restart occurs after an odd number of triangles.
*/
bool gs_tri_strip_adj_fix =
!HAS_TESS && prim == PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY && !primitive_restart;
!HAS_TESS && prim == PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY;
if (gs_tri_strip_adj_fix != sctx->gs_tri_strip_adj_fix) {
sctx->gs_tri_strip_adj_fix = gs_tri_strip_adj_fix;