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nv50: don't permanently negate src in emit_ddy

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This commit is contained in:
Christoph Bumiller 2009-11-26 17:03:00 +01:00
parent 287bdd8e75
commit 3f471c7948
1 changed files with 10 additions and 4 deletions
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14
src/gallium/drivers/nv50/nv50_program.c
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@ -1440,19 +1440,25 @@ emit_ddx(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src)
static void
emit_ddy(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src)
{
struct nv50_reg *r = src;
struct nv50_program_exec *e = exec(pc);
assert(src->type == P_TEMP);
if (!(src->mod & NV50_MOD_NEG)) /* ! double negation */
emit_neg(pc, src, src);
if (!(src->mod & NV50_MOD_NEG)) { /* ! double negation */
r = alloc_temp(pc, NULL);
emit_neg(pc, r, src);
}
e->inst[0] = 0xc0150000;
e->inst[1] = 0x8a400000;
set_long(pc, e);
set_dst(pc, dst, e);
set_src_0(pc, src, e);
set_src_2(pc, src, e);
set_src_0(pc, r, e);
set_src_2(pc, r, e);
if (r != src)
free_temp(pc, r);
emit(pc, e);
}