Mesa (master): pan/mdg: Add disassembly for shadow gathers

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Module: Mesa
Branch: master
Commit: 661123bb19d4f17c895a3fe166b3f87ddb2191eb
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=661123bb19d4f17c895a3fe166b3f87ddb2191eb

Author: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Date:   Fri Aug 28 08:53:44 2020 -0400

pan/mdg: Add disassembly for shadow gathers

By applying `textureGather` to a `sampler2DShadow`, the blob produces
(under the old disassembly):

   tex_22.vtx.2d.shadow.cont.last r29, texture0, fsampler0.zwyx, r29,

The op 0x22 is 10|0010 in binary, the old shadow parameter is 1, and old
gather parameter is 0, so we get 0110|0010 in binary, or an op of
textureLod with a mod of 0110 = 6.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6516>

---

 src/panfrost/midgard/disassemble.c | 1 +
 src/panfrost/midgard/midgard.h     | 1 +
 2 files changed, 2 insertions(+)

diff --git a/src/panfrost/midgard/disassemble.c b/src/panfrost/midgard/disassemble.c
index 5568fa03663..e872ea9923c 100644
--- a/src/panfrost/midgard/disassemble.c
+++ b/src/panfrost/midgard/disassemble.c
@@ -1385,6 +1385,7 @@ texture_mode(enum mali_texture_mode mode)
         switch (mode) {
         case TEXTURE_NORMAL: return "";
         case TEXTURE_SHADOW: return ".shadow";
+        case TEXTURE_GATHER_SHADOW: return ".gather.shadow";
         case TEXTURE_GATHER_X: return ".gatherX";
         case TEXTURE_GATHER_Y: return ".gatherY";
         case TEXTURE_GATHER_Z: return ".gatherZ";
diff --git a/src/panfrost/midgard/midgard.h b/src/panfrost/midgard/midgard.h
index 6308e89e916..656881c7ff3 100644
--- a/src/panfrost/midgard/midgard.h
+++ b/src/panfrost/midgard/midgard.h
@@ -651,6 +651,7 @@ enum mali_sampler_type {
 enum mali_texture_mode {
         TEXTURE_NORMAL = 1,
         TEXTURE_SHADOW = 5,
+        TEXTURE_GATHER_SHADOW = 6,
         TEXTURE_GATHER_X = 8,
         TEXTURE_GATHER_Y = 9,
         TEXTURE_GATHER_Z = 10,