From 2c0b0f927fc517f728b6f35feded278e4f8152ce Mon Sep 17 00:00:00 2001
From: ZwX1616 <zwx1616@gmail.com>
Date: Tue, 27 Apr 2021 17:41:59 -0700
Subject: [PATCH] C2 dim displays: remap in shader to avoid screen deadzone
 (#20757)

---
 selfdrive/ui/paint.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/selfdrive/ui/paint.cc b/selfdrive/ui/paint.cc
index 1793fc037d..7b63690adc 100644
--- a/selfdrive/ui/paint.cc
+++ b/selfdrive/ui/paint.cc
@@ -462,6 +462,10 @@ static const char frame_fragment_shader[] =
   "out vec4 colorOut;\n"
   "void main() {\n"
   "  colorOut = texture(uTexture, vTexCoord.xy);\n"
+#ifdef QCOM
+  "  vec3 dz = vec3(0.0627f, 0.0627f, 0.0627f);\n"
+  "  colorOut.rgb = ((vec3(1.0f, 1.0f, 1.0f) - dz) * colorOut.rgb / vec3(1.0f, 1.0f, 1.0f)) + dz;\n"
+#endif
   "}\n";
 
 static const mat4 device_transform = {{