From 2047be4516890fe12dfc2d2f3fb40048fd1891dc Mon Sep 17 00:00:00 2001
From: Miguel Gonzalez Sanchez <822035+bitbrain@users.noreply.github.com>
Date: Sat, 24 Sep 2022 20:13:12 +0100
Subject: [PATCH] fix broken 2D light blending, addresses #49922

---
 servers/rendering/renderer_rd/shaders/canvas.glsl | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/servers/rendering/renderer_rd/shaders/canvas.glsl b/servers/rendering/renderer_rd/shaders/canvas.glsl
index 459d798a802b..1f33e84f961b 100644
--- a/servers/rendering/renderer_rd/shaders/canvas.glsl
+++ b/servers/rendering/renderer_rd/shaders/canvas.glsl
@@ -595,6 +595,8 @@ void main() {
 		color = vec4(0.0); //invisible by default due to using light mask
 	}
 
+	vec4 original_color = color;
+
 #ifdef MODE_LIGHT_ONLY
 	color = vec4(0.0);
 #else
@@ -636,6 +638,8 @@ void main() {
 			);
 		}
 
+		light_color.rgb *= original_color.rgb;
+
 		light_blend_compute(light_base, light_color, color.rgb);
 	}
 
@@ -732,6 +736,8 @@ void main() {
 			);
 		}
 
+		light_color.rgb *= original_color.rgb;
+
 		light_blend_compute(light_base, light_color, color.rgb);
 	}
 #endif