From: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Date: Fri, 1 May 2020 22:26:18 +0000 (-0400)
Subject: pan/bi: Emit discard (not if)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7d867f787f9ada8b67e4d8ee6e9e388b6d6bc9bd;p=mesa.git

pan/bi: Emit discard (not if)

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4883>
---

diff --git a/src/panfrost/bifrost/bifrost_compile.c b/src/panfrost/bifrost/bifrost_compile.c
index 2b5b5070dd9..b5027e18b71 100644
--- a/src/panfrost/bifrost/bifrost_compile.c
+++ b/src/panfrost/bifrost/bifrost_compile.c
@@ -351,6 +351,20 @@ bi_emit_ld_frag_coord(bi_context *ctx, nir_intrinsic_instr *instr)
         bi_emit(ctx, combine);
 }
 
+static void
+bi_emit_discard(bi_context *ctx, nir_intrinsic_instr *instr)
+{
+        /* Goofy lowering */
+        bi_instruction discard = {
+                .type = BI_DISCARD,
+                .cond = BI_COND_EQ,
+                .src_types = { nir_type_uint32, nir_type_uint32 },
+                .src = { BIR_INDEX_ZERO, BIR_INDEX_ZERO },
+        };
+
+        bi_emit(ctx, discard);
+}
+
 static void
 bi_emit_discard_if(bi_context *ctx, nir_intrinsic_instr *instr)
 {
@@ -406,6 +420,10 @@ emit_intrinsic(bi_context *ctx, nir_intrinsic_instr *instr)
                 bi_emit_ld_frag_coord(ctx, instr);
                 break;
 
+        case nir_intrinsic_discard:
+                bi_emit_discard(ctx, instr);
+                break;
+
         case nir_intrinsic_discard_if:
                 bi_emit_discard_if(ctx, instr);
                 break;