From beb7d660561b424c58d5527ff3edaee100d07a8b Mon Sep 17 00:00:00 2001
From: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Date: Thu, 28 Jan 2021 20:25:55 -0500
Subject: [PATCH] panfrost: Add sample positions sysval

For Midgard. On Bifrost, the hardware pushes this directly to FAU.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8774>
---
 src/panfrost/util/pan_ir.h     | 1 +
 src/panfrost/util/pan_sysval.c | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/src/panfrost/util/pan_ir.h b/src/panfrost/util/pan_ir.h
index c5132754299..afcb2ed6bf8 100644
--- a/src/panfrost/util/pan_ir.h
+++ b/src/panfrost/util/pan_ir.h
@@ -53,6 +53,7 @@ enum {
         PAN_SYSVAL_LOCAL_GROUP_SIZE = 8,
         PAN_SYSVAL_WORK_DIM = 9,
         PAN_SYSVAL_IMAGE_SIZE = 10,
+        PAN_SYSVAL_SAMPLE_POSITIONS = 11,
 };
 
 #define PAN_TXS_SYSVAL_ID(texidx, dim, is_array)          \
diff --git a/src/panfrost/util/pan_sysval.c b/src/panfrost/util/pan_sysval.c
index a80c5ab3f8a..996041dc2ad 100644
--- a/src/panfrost/util/pan_sysval.c
+++ b/src/panfrost/util/pan_sysval.c
@@ -75,6 +75,8 @@ panfrost_nir_sysval_for_intrinsic(nir_intrinsic_instr *instr)
                 return PAN_SYSVAL_LOCAL_GROUP_SIZE;
         case nir_intrinsic_load_work_dim:
                 return PAN_SYSVAL_WORK_DIM;
+        case nir_intrinsic_load_sample_positions_pan:
+                return PAN_SYSVAL_SAMPLE_POSITIONS;
         case nir_intrinsic_load_ssbo_address: 
         case nir_intrinsic_get_ssbo_size: 
                 return panfrost_sysval_for_ssbo(instr);