From 73456393d8f090041730c019daa9ce99e028a8bf Mon Sep 17 00:00:00 2001
From: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Date: Fri, 9 Jul 2021 08:57:19 -0400
Subject: [PATCH] zink: add input attachment thingy for spirv builder

Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12603>
---
 src/gallium/drivers/zink/nir_to_spirv/spirv_builder.c | 7 +++++++
 src/gallium/drivers/zink/nir_to_spirv/spirv_builder.h | 3 +++
 2 files changed, 10 insertions(+)

diff --git a/src/gallium/drivers/zink/nir_to_spirv/spirv_builder.c b/src/gallium/drivers/zink/nir_to_spirv/spirv_builder.c
index 878783fd3f3..89203d01964 100644
--- a/src/gallium/drivers/zink/nir_to_spirv/spirv_builder.c
+++ b/src/gallium/drivers/zink/nir_to_spirv/spirv_builder.c
@@ -215,6 +215,13 @@ spirv_builder_emit_decoration(struct spirv_builder *b, SpvId target,
    emit_decoration(b, target, decoration, NULL, 0);
 }
 
+void
+spirv_builder_emit_input_attachment_index(struct spirv_builder *b, SpvId target, uint32_t id)
+{
+   uint32_t args[] = { id };
+   emit_decoration(b, target, SpvDecorationInputAttachmentIndex, args, ARRAY_SIZE(args));
+}
+
 void
 spirv_builder_emit_specid(struct spirv_builder *b, SpvId target, uint32_t id)
 {
diff --git a/src/gallium/drivers/zink/nir_to_spirv/spirv_builder.h b/src/gallium/drivers/zink/nir_to_spirv/spirv_builder.h
index 6ad3064ced6..d18c101b394 100644
--- a/src/gallium/drivers/zink/nir_to_spirv/spirv_builder.h
+++ b/src/gallium/drivers/zink/nir_to_spirv/spirv_builder.h
@@ -89,6 +89,9 @@ void
 spirv_builder_emit_decoration(struct spirv_builder *b, SpvId target,
                               SpvDecoration decoration);
 
+void
+spirv_builder_emit_input_attachment_index(struct spirv_builder *b, SpvId target, uint32_t id);
+
 void
 spirv_builder_emit_specid(struct spirv_builder *b, SpvId target, uint32_t id);