From d50381065445e04b5c1af9992fa0a0b8fcfe49b0 Mon Sep 17 00:00:00 2001
From: David Snopek <dsnopek@gmail.com>
Date: Fri, 6 Jun 2025 16:29:22 -0500
Subject: [PATCH] OpenGL: Fix shader compilation failure with
 `shadow_to_opacity` and `unshaded`

---
 drivers/gles3/shaders/scene.glsl | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gles3/shaders/scene.glsl b/drivers/gles3/shaders/scene.glsl
index 2e313ccaf39..175abfc1f1e 100644
--- a/drivers/gles3/shaders/scene.glsl
+++ b/drivers/gles3/shaders/scene.glsl
@@ -2273,7 +2273,11 @@ void main() {
 
 #if defined(USE_SHADOW_TO_OPACITY)
 #ifndef MODE_RENDER_DEPTH
+#ifndef MODE_UNSHADED
 	alpha = min(alpha, clamp(length(ambient_light), 0.0, 1.0));
+#else
+	alpha = 0.0;
+#endif
 
 #if defined(ALPHA_SCISSOR_USED)
 #ifdef RENDER_MATERIAL