On 12/16/2015 11:40 PM, Ilia Mirkin wrote:
On Tue, Dec 15, 2015 at 6:05 PM, Miklós Máté <mtm...@gmail.com> wrote:
+ } else if (desc->special == 3) {
+ src[0] = args[0];
+ src[1] = args[1];
+ src[2] = ureg_swizzle(args[2],
+ TGSI_SWIZZLE_Z, TGSI_SWIZZLE_Z, TGSI_SWIZZLE_Z, TGSI_SWIZZLE_Z);
+ emit_insn(t, TGSI_OPCODE_DP2A, dst, 1, src, 3);
+ }
Not strictly your fault, but in practice, no backends actually
implement DP2A. Not sure why -- i915, nv30, and r300 even have
explicit ops for this. You can use DP2 + ADD. Or go around all the
backends an implement it.
-ilia
Actually, I wanted to ask what this opcode is useful for, because I have
no clue. I'll change it to DP2+ADD for the next version.
By the way, I found no example that used any of these three special
ATIfs instructions.
MM
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