Mesa (master): panfrost: Add MALI_PER_SAMPLE bit

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Module: Mesa
Branch: master
Commit: 5c65a27adc69e24cda053cfad85c0973926348aa
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=5c65a27adc69e24cda053cfad85c0973926348aa

Author: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Date:   Tue Jul 14 21:36:59 2020 -0400

panfrost: Add MALI_PER_SAMPLE bit

For gl_SampleID reads.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5929>

---

 src/panfrost/include/panfrost-job.h | 4 ++++
 src/panfrost/pandecode/decode.c     | 1 +
 2 files changed, 5 insertions(+)

diff --git a/src/panfrost/include/panfrost-job.h b/src/panfrost/include/panfrost-job.h
index 720420f8ed1..21b52ad4ea5 100644
--- a/src/panfrost/include/panfrost-job.h
+++ b/src/panfrost/include/panfrost-job.h
@@ -92,6 +92,10 @@ enum mali_func {
 /* Flags apply to unknown2_3? */
 
 #define MALI_HAS_MSAA		(1 << 0)
+
+/* Execute fragment shader per-sample if set (e.g. to implement gl_SampleID
+ * reads) */
+#define MALI_PER_SAMPLE         (1 << 2)
 #define MALI_CAN_DISCARD 	(1 << 5)
 
 /* Applies on SFBD systems, specifying that programmable blending is in use */
diff --git a/src/panfrost/pandecode/decode.c b/src/panfrost/pandecode/decode.c
index b659614467e..6950fe9f913 100644
--- a/src/panfrost/pandecode/decode.c
+++ b/src/panfrost/pandecode/decode.c
@@ -223,6 +223,7 @@ static const struct pandecode_flag_info mask_flag_info[] = {
 #define FLAG_INFO(flag) { MALI_##flag, "MALI_" #flag }
 static const struct pandecode_flag_info u3_flag_info[] = {
         FLAG_INFO(HAS_MSAA),
+        FLAG_INFO(PER_SAMPLE),
         FLAG_INFO(CAN_DISCARD),
         FLAG_INFO(HAS_BLEND_SHADER),
         FLAG_INFO(DEPTH_WRITEMASK),