AlexIndustrial/mesa
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

i965: Implement frag prog DPH like DP4

Browse Source 
DPH can output to any component, not just to X.  This allows fpalu.c
to run without hitting the assertion in emit_dph.
This commit is contained in:
Ian Romanick
2009-08-22 01:35:12 -07:00
parent 54fb71b863
commit c87ef0870a
1 changed files with 5 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/mesa/drivers/dri/i965/brw_wm_emit.c
+5 -3
View File
@@ -588,17 +588,19 @@ static void emit_dph( struct brw_compile *p,
const struct brw_reg *arg0,
const struct brw_reg *arg1 )
{
const int dst_chan = _mesa_ffs(mask & WRITEMASK_XYZW) - 1;
if (!(mask & WRITEMASK_XYZW))
return; /* Do not emit dead code */
assert((mask & WRITEMASK_XYZW) == WRITEMASK_X);
assert(is_power_of_two(mask & WRITEMASK_XYZW));
brw_MUL(p, brw_null_reg(), arg0[0], arg1[0]);
brw_MAC(p, brw_null_reg(), arg0[1], arg1[1]);
brw_MAC(p, dst[0], arg0[2], arg1[2]);
brw_MAC(p, dst[dst_chan], arg0[2], arg1[2]);
brw_set_saturate(p, (mask & SATURATE) ? 1 : 0);
brw_ADD(p, dst[0], dst[0], arg1[3]);
brw_ADD(p, dst[dst_chan], dst[dst_chan], arg1[3]);
brw_set_saturate(p, 0);
}