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r300: drop framebuffer fetch handling from ntr

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Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41467>
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Pavel Ondračka 2026-05-07 10:05:54 +02:00 • committed by Marge Bot
parent 489f30bf36
commit a2d70557d5
1 changed files with 3 additions and 30 deletions
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33
src/gallium/drivers/r300/compiler/nir_to_rc.c
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@ -1120,37 +1120,10 @@ ntr_emit_store_output(struct ntr_compile *c, nir_intrinsic_instr *instr)
static void
ntr_emit_load_output(struct ntr_compile *c, nir_intrinsic_instr *instr)
{
nir_io_semantics semantics = nir_intrinsic_io_semantics(instr);
/* ntr_try_store_in_tgsi_output() optimization is not valid if normal
* load_output is present.
/* r300 has no GS/tess stages and doesn't expose framebuffer fetch,
* so the only callers of nir_intrinsic_load_output are gone.
*/
assert(c->s->info.stage != MESA_SHADER_VERTEX &&
(c->s->info.stage != MESA_SHADER_FRAGMENT || semantics.fb_fetch_output));
uint32_t frac;
struct ureg_dst out = ntr_output_decl(c, instr, &frac);
out = ntr_ureg_dst_indirect(c, out, instr->src[0]);
struct ureg_dst dst = ntr_get_dest(c, &instr->def);
struct ureg_src out_src = ureg_src(out);
/* Don't swizzling unavailable channels of the output in the writemasked-out
* components. Avoids compile failures in virglrenderer with
* TESS_LEVEL_INNER.
*/
int fill_channel = ffs(dst.WriteMask) - 1;
uint8_t swizzles[4] = {0, 1, 2, 3};
for (int i = 0; i < 4; i++)
if (!(dst.WriteMask & (1 << i)))
swizzles[i] = fill_channel;
out_src = ureg_swizzle(out_src, swizzles[0], swizzles[1], swizzles[2], swizzles[3]);
if (semantics.fb_fetch_output)
ntr_FBFETCH(c, dst, out_src);
else
ntr_MOV(c, dst, out_src);
UNREACHABLE("load_output not supported on r300");
}
static void