From 1675c5375ed43c92cc726d59c3475db8de9d9f1b Mon Sep 17 00:00:00 2001
From: floppyhammer <tannhauser_chen@outlook.com>
Date: Sat, 26 Feb 2022 13:53:06 +0800
Subject: [PATCH] Fix particle trail glitch

---
 servers/rendering/renderer_rd/shaders/particles_copy.glsl | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/servers/rendering/renderer_rd/shaders/particles_copy.glsl b/servers/rendering/renderer_rd/shaders/particles_copy.glsl
index afbd5a9caa2..1cd8174e9d4 100644
--- a/servers/rendering/renderer_rd/shaders/particles_copy.glsl
+++ b/servers/rendering/renderer_rd/shaders/particles_copy.glsl
@@ -209,7 +209,13 @@ void main() {
 
 		txform = transpose(txform);
 	} else {
-		txform = mat4(vec4(0.0), vec4(0.0), vec4(0.0), vec4(0.0)); //zero scale, becomes invisible
+		// Even being inactive, its position still needs to preserved as it might be used by trails.
+		txform = particles.data[particle].xform;
+
+		// Set scale zero to make it invisible.
+		txform[0].xyz = vec3(0);
+
+		txform = transpose(txform);
 	}
 
 	if (params.copy_mode_2d) {