From d6c5cb7778c984735c0e654591d52b07fdfea6ea Mon Sep 17 00:00:00 2001
From: Mathias Agopian <mathias@google.com>
Date: Fri, 14 May 2021 16:43:44 -0700
Subject: [PATCH] workaround a shader compiler bug on qualcomm h/w

---
 shaders/src/light_punctual.fs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/shaders/src/light_punctual.fs b/shaders/src/light_punctual.fs
index 705fb78b84..841213da53 100644
--- a/shaders/src/light_punctual.fs
+++ b/shaders/src/light_punctual.fs
@@ -79,7 +79,9 @@ uint getLightIndex(const uint index) {
     uint v = index >> 4u;
     uint c = (index >> 2u) & 0x3u;
     uint s = (index & 0x3u) * 8u;
-    return (froxelRecordUniforms.records[v][c] >> s) & 0xFFu;
+    // this intermediate is needed to workaround a bug on qualcomm h/w
+    highp uvec4 d = froxelRecordUniforms.records[v];
+    return (d[c] >> s) & 0xFFu;
 }
 
 float getSquareFalloffAttenuation(float distanceSquare, float falloff) {