+static boolean
+src_native_swz(struct nv40_vpc *vpc, const struct tgsi_full_src_register *fsrc,
+ struct nv40_sreg *src)
+{
+ const struct nv40_sreg none = nv40_sr(NV40SR_NONE, 0);
+ struct nv40_sreg tgsi = tgsi_src(vpc, fsrc);
+ uint mask = 0, zero_mask = 0, one_mask = 0, neg_mask = 0;
+ uint neg[4] = { fsrc->SrcRegisterExtSwz.NegateX,
+ fsrc->SrcRegisterExtSwz.NegateY,
+ fsrc->SrcRegisterExtSwz.NegateZ,
+ fsrc->SrcRegisterExtSwz.NegateW };
+ uint c;
+
+ for (c = 0; c < 4; c++) {
+ switch (tgsi_util_get_full_src_register_extswizzle(fsrc, c)) {
+ case TGSI_EXTSWIZZLE_X:
+ case TGSI_EXTSWIZZLE_Y:
+ case TGSI_EXTSWIZZLE_Z:
+ case TGSI_EXTSWIZZLE_W:
+ mask |= tgsi_mask(1 << c);
+ break;
+ case TGSI_EXTSWIZZLE_ZERO:
+ zero_mask |= tgsi_mask(1 << c);
+ tgsi.swz[c] = SWZ_X;
+ break;
+ case TGSI_EXTSWIZZLE_ONE:
+ one_mask |= tgsi_mask(1 << c);
+ tgsi.swz[c] = SWZ_X;
+ break;
+ default:
+ assert(0);
+ }
+
+ if (!tgsi.negate && neg[c])
+ neg_mask |= tgsi_mask(1 << c);
+ }
+
+ if (mask == MASK_ALL && !neg_mask)
+ return TRUE;
+
+ *src = temp(vpc);
+
+ if (mask)
+ arith(vpc, 0, OP_MOV, *src, mask, tgsi, none, none);
+
+ if (zero_mask)
+ arith(vpc, 0, OP_SFL, *src, zero_mask, *src, none, none);
+
+ if (one_mask)
+ arith(vpc, 0, OP_STR, *src, one_mask, *src, none, none);
+
+ if (neg_mask) {
+ struct nv40_sreg one = temp(vpc);
+ arith(vpc, 0, OP_STR, one, neg_mask, one, none, none);
+ arith(vpc, 0, OP_MUL, *src, neg_mask, *src, neg(one), none);
+ }
+
+ return FALSE;
+}
+