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freedreno/a3xx: set .zw of sprite coords to .01 

Fixes non-determinism in bin/point-sprite rendering, and the stars on
the intro screen to neverball.

Cc: "10.6" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
This commit is contained in:
Ilia Mirkin 2015-05-20 04:00:16 -04:00
parent 3e7bc67285
commit 6cdb29d52f
1 changed files with 6 additions and 3 deletions
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9
src/gallium/drivers/freedreno/a3xx/fd3_program.c
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@ -413,12 +413,15 @@ fd3_program_emit(struct fd_ringbuffer *ring, struct fd3_emit *emit,
}
}
/* TODO: Figure out if there's a way to make it spit out 0's and
* 1's for the .z and .w components.
/* Replace the .xy coordinates with S/T from the point sprite. Set
* interpolation bits for .zw such that they become .01
*/
if (emit->sprite_coord_enable & (1 << sem2idx(fp->inputs[j].semantic)))
if (emit->sprite_coord_enable & (1 << sem2idx(fp->inputs[j].semantic))) {
vpsrepl[inloc / 16] |= (emit->sprite_coord_mode ? 0x0d : 0x09)
<< ((inloc % 16) * 2);
vinterp[(inloc + 2) / 16] |= 2 << (((inloc + 2) % 16) * 2);
vinterp[(inloc + 3) / 16] |= 3 << (((inloc + 3) % 16) * 2);
}
}
OUT_PKT0(ring, REG_A3XX_VPC_ATTR, 2);