freedreno/a5xx: set fragcoordxy properly
What a3xx docs call IJPERSPCENTERREGID.. the xy coord passed into
bary.f. We were incorrectly setting both this and gl_FragCoord.xy to
the same register resulting in all sorts of hilarity.
Fixes stk, vdrift, 0ad, probably a bunch others.
Signed-off-by: Rob Clark <robdclark@gmail.com>
Cc: "17.0" <mesa-stable@lists.freedesktop.org>
(cherry picked from commit 8d6af93e76bb9e592293b632b22b2b756cc0cae8)
diff --git a/src/gallium/drivers/freedreno/a5xx/fd5_program.c b/src/gallium/drivers/freedreno/a5xx/fd5_program.c
index d297131..1738b2f 100644
--- a/src/gallium/drivers/freedreno/a5xx/fd5_program.c
+++ b/src/gallium/drivers/freedreno/a5xx/fd5_program.c
@@ -365,7 +365,7 @@
face_regid = s[FS].v->frag_face ? regid(0,0) : regid(63,0);
coord_regid = s[FS].v->frag_coord ? regid(0,0) : regid(63,0);
zwcoord_regid = s[FS].v->frag_coord ? regid(0,2) : regid(63,0);
- vcoord_regid = (s[FS].v->total_in > 0) ? regid(0,0) : regid(63,0);
+ vcoord_regid = (s[FS].v->total_in > 0) ? s[FS].v->pos_regid : regid(63,0);
/* we could probably divide this up into things that need to be
* emitted if frag-prog is dirty vs if vert-prog is dirty..
