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freedreno/a4xx: fake LINEAR_PIXEL varying support for u_blitter

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Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5582>
This commit is contained in:
Jonathan Marek
2020-06-27 22:01:16 -04:00
committed by Marge Bot
parent 0d419c76bb
commit 75fef41f16
1 changed files with 11 additions and 1 deletions
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src/gallium/drivers/freedreno/a4xx/fd4_program.c
+11 -1
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@@ -164,7 +164,7 @@ fd4_program_emit(struct fd_ringbuffer *ring, struct fd4_emit *emit,
{
struct stage s[MAX_STAGES];
uint32_t pos_regid, posz_regid, psize_regid, color_regid[8];
uint32_t face_regid, coord_regid, zwcoord_regid, vcoord_regid;
uint32_t face_regid, coord_regid, zwcoord_regid, vcoord_regid, lcoord_regid;
enum a3xx_threadsize fssz;
int constmode;
int i, j;
@@ -210,6 +210,16 @@ fd4_program_emit(struct fd_ringbuffer *ring, struct fd4_emit *emit,
coord_regid = ir3_find_sysval_regid(s[FS].v, SYSTEM_VALUE_FRAG_COORD);
zwcoord_regid = (coord_regid == regid(63,0)) ? regid(63,0) : (coord_regid + 2);
vcoord_regid = ir3_find_sysval_regid(s[FS].v, SYSTEM_VALUE_BARYCENTRIC_PERSP_PIXEL);
lcoord_regid = ir3_find_sysval_regid(s[FS].v, SYSTEM_VALUE_BARYCENTRIC_LINEAR_PIXEL);
/* XXX since we don't know how to support noperspective varyings on a4xx,
* use this little hack to support u_blitter, which should be the only
* case with noperspective varyings on a4xx:
*/
if (VALIDREG(lcoord_regid)) {
assert(!VALIDREG(vcoord_regid));
vcoord_regid = lcoord_regid;
}
/* we could probably divide this up into things that need to be
* emitted if frag-prog is dirty vs if vert-prog is dirty..