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pan/midgard: Splatter on fragment out

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Make sure that the fragment is complete when writing it out.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
This commit is contained in:
Alyssa Rosenzweig 2019-11-26 08:48:33 -05:00 • committed by Tomeu Vizoso
parent ab81a23d36
commit 8555bffafd
1 changed files with 20 additions and 1 deletions
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21
src/panfrost/midgard/midgard_compile.c
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@ -1590,7 +1590,26 @@ emit_intrinsic(compiler_context *ctx, nir_intrinsic_instr *instr)
case nir_intrinsic_store_raw_output_pan:
assert (ctx->stage == MESA_SHADER_FRAGMENT);
reg = nir_src_index(ctx, &instr->src[0]);
emit_fragment_store(ctx, reg, 0);
if (ctx->quirks & MIDGARD_OLD_BLEND) {
/* Suppose reg = qr0.xyzw. That means 4 8-bit ---> 1 32-bit. So
* reg = r0.x. We want to splatter. So we can do a 32-bit move
* of:
*
* imov r0.xyzw, r0.xxxx
*/
unsigned expanded = make_compiler_temp(ctx);
midgard_instruction splatter = v_mov(reg, expanded);
for (unsigned c = 0; c < 16; ++c)
splatter.swizzle[1][c] = 0;
emit_mir_instruction(ctx, splatter);
emit_fragment_store(ctx, expanded, 0);
} else
emit_fragment_store(ctx, reg, 0);
break;