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freedreno/a4xx: temp hack for FLAT varyings 

Signed-off-by: Rob Clark <robclark@freedesktop.org>
This commit is contained in:
Rob Clark 2014-12-06 16:29:53 -05:00
parent eb6fd3b8eb
commit 6a5ba23fa6
1 changed files with 19 additions and 0 deletions
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19
src/gallium/drivers/freedreno/a4xx/fd4_program.c
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@ -431,6 +431,25 @@ fd4_program_emit(struct fd_ringbuffer *ring, struct fd4_emit *emit)
}
}
/* HACK: looks like we need to do int varyings in the frag
* shader on a4xx (no flatshad reg?):
*
* (sy)(ss)nop
* (sy)ldlv.u32 r0.x,l[r0.x], 1
* ldlv.u32 r0.y,l[r0.x+1], 1
* (ss)bary.f (ei)r63.x, 0, r0.x
* (ss)(rpt1)cov.s32f16 hr0.x, (r)r0.x
* (rpt5)nop
* sam (f16)(xyzw)hr0.x, hr0.x, s#0, t#0
*
* for now, don't set FLAT on vinterp[], since that
* at least works well enough for pure float impl (ie.
* pre glsl130).. we'll have to do a bit more work to
* handle this properly:
*/
for (i = 0; i < ARRAY_SIZE(vinterp); i++)
vinterp[i] = 0;
OUT_PKT0(ring, REG_A4XX_VPC_ATTR, 2);
OUT_RING(ring, A4XX_VPC_ATTR_TOTALATTR(s[FS].v->total_in) |
A4XX_VPC_ATTR_THRDASSIGN(1) |