From 3b69e6bdf484a6b1cf95cf6449e73218e840380b Mon Sep 17 00:00:00 2001
From: Geoffrey McRae <geoff@hostfission.com>
Date: Fri, 17 Jul 2026 17:15:13 +1000
Subject: [PATCH] [client] egl: fix masked color cursor HDR mapping

---
 client/renderers/EGL/shader/cursor_mono.frag | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/client/renderers/EGL/shader/cursor_mono.frag b/client/renderers/EGL/shader/cursor_mono.frag
index 7a0227f0..bb2d83f3 100644
--- a/client/renderers/EGL/shader/cursor_mono.frag
+++ b/client/renderers/EGL/shader/cursor_mono.frag
@@ -2,11 +2,14 @@
 precision highp float;
 precision highp int;
 
+#include "hdr.h"
+
 in  vec2 uv;
 out vec4 color;
 
 uniform sampler2D sampler1;
 uniform float     scale;
+uniform bool      mapSDRtoPQ;
 
 void main()
 {
@@ -26,5 +29,11 @@ void main()
   if (tmp.rgb == vec3(0.0, 0.0, 0.0))
     discard;
 
+  if (mapSDRtoPQ)
+  {
+    vec3 linear = bt709to2020(srgb2lin(tmp.rgb));
+    tmp.rgb = lin2pq(linear * (203.0 / 10000.0));
+  }
+
   color = tmp;
 }