From 8c56434bd3e93e89e258d82171b9af71b558145e Mon Sep 17 00:00:00 2001
From: lhofhansl <larsh@apache.org>
Date: Mon, 25 Nov 2024 11:56:32 -0800
Subject: [PATCH] Clamp pre-bloom color to valid range (#15453)

That avoids flashing artifacts when combining MSAA and bloom.
---
 client/shaders/extract_bloom/opengl_fragment.glsl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/client/shaders/extract_bloom/opengl_fragment.glsl b/client/shaders/extract_bloom/opengl_fragment.glsl
index 36671b06c..281884cee 100644
--- a/client/shaders/extract_bloom/opengl_fragment.glsl
+++ b/client/shaders/extract_bloom/opengl_fragment.glsl
@@ -23,7 +23,7 @@ void main(void)
 	vec2 uv = varTexCoord.st;
 	vec3 color = texture2D(rendered, uv).rgb;
 	// translate to linear colorspace (approximate)
-	color = pow(color, vec3(2.2));
+	color = pow(clamp(color, 0.0, 1.0), vec3(2.2));
 
 	color *= exposureParams.compensationFactor * bloomStrength;