From: Eric Anholt <eric@anholt.net>
Date: Tue, 21 Apr 2020 23:02:29 +0000 (-0700)
Subject: freedreno/ir3: Drop handling FRAG_RESULT_DEPTH writing to .z
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=2f4a3c1ca07e63b725c6eb4f013c5ee9efb0c1a0;p=mesa.git

freedreno/ir3: Drop handling FRAG_RESULT_DEPTH writing to .z

Since we consume NIR, we get FRAG_RESULT_DEPTH in .x.  Something must have
been working out for this code to not be trying to get an undefined value,
but go ahead and drop it now.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4668>
---

diff --git a/src/freedreno/ir3/ir3_compiler_nir.c b/src/freedreno/ir3/ir3_compiler_nir.c
index d9152416e4d..a82faee998e 100644
--- a/src/freedreno/ir3/ir3_compiler_nir.c
+++ b/src/freedreno/ir3/ir3_compiler_nir.c
@@ -3150,12 +3150,10 @@ setup_output(struct ir3_context *ctx, nir_variable *out)
 	unsigned n = out->data.driver_location;
 	unsigned frac = out->data.location_frac;
 	unsigned slot = out->data.location;
-	unsigned comp = 0;
 
 	if (ctx->so->type == MESA_SHADER_FRAGMENT) {
 		switch (slot) {
 		case FRAG_RESULT_DEPTH:
-			comp = 2;  /* tgsi will write to .z component */
 			so->writes_pos = true;
 			break;
 		case FRAG_RESULT_COLOR:
@@ -3213,7 +3211,7 @@ setup_output(struct ir3_context *ctx, nir_variable *out)
 	compile_assert(ctx, n < ARRAY_SIZE(so->outputs));
 
 	so->outputs[n].slot = slot;
-	so->outputs[n].regid = regid(n, comp);
+	so->outputs[n].regid = regid(n, 0);
 	so->outputs_count = MAX2(so->outputs_count, n + 1);
 
 	for (int i = 0; i < ncomp; i++) {