From: Nicolai Hähnle <nicolai.haehnle@amd.com>
Date: Tue, 4 Jul 2017 09:09:24 +0000 (+0200)
Subject: ac/nir: implement load_frag_coord intrinsic
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b7d36efc2d38fa39e860a734a2265b35c2a34e9c;p=mesa.git

ac/nir: implement load_frag_coord intrinsic

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
---

diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
index 9d159649c38..c08f1020e35 100644
--- a/src/amd/common/ac_nir_to_llvm.c
+++ b/src/amd/common/ac_nir_to_llvm.c
@@ -4012,6 +4012,16 @@ static void visit_intrinsic(struct ac_nir_context *ctx,
 	case nir_intrinsic_load_sample_mask_in:
 		result = ctx->abi->sample_coverage;
 		break;
+	case nir_intrinsic_load_frag_coord: {
+		LLVMValueRef values[4] = {
+			ctx->abi->frag_pos[0],
+			ctx->abi->frag_pos[1],
+			ctx->abi->frag_pos[2],
+			ac_build_fdiv(&ctx->ac, ctx->ac.f32_1, ctx->abi->frag_pos[3])
+		};
+		result = ac_build_gather_values(&ctx->ac, values, 4);
+		break;
+	}
 	case nir_intrinsic_load_front_face:
 		result = ctx->abi->front_face;
 		break;