From 627e31820e3ccf62e17ed99ec358d89def6ab521 Mon Sep 17 00:00:00 2001
From: hodasemi <michaelh.95@t-online.de>
Date: Wed, 12 Mar 2025 08:27:36 +0100
Subject: [PATCH] Attempt to fix transparency problem

---
 .../shaders/raytracing/hardware/default/closesthit.rchit     | 5 ++++-
 .../shaders/raytracing/hardware/default/raygen.rgen          | 2 --
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/engine/src/scene/rendering/shaders/raytracing/hardware/default/closesthit.rchit b/engine/src/scene/rendering/shaders/raytracing/hardware/default/closesthit.rchit
index 517bcca..ae8d8d5 100644
--- a/engine/src/scene/rendering/shaders/raytracing/hardware/default/closesthit.rchit
+++ b/engine/src/scene/rendering/shaders/raytracing/hardware/default/closesthit.rchit
@@ -34,6 +34,7 @@ void own_implementation() {
 
     vec3 diffuse = tmp.xyz;
     float alpha = tmp.w;
+    float max_alpha = alpha;
 
     // get normal
     vec3 normal = normal(triangle);
@@ -165,12 +166,14 @@ void own_implementation() {
         pay_load.depth--;
 
         object_color = mix(pay_load.color.xyz, object_color, alpha);
+        alpha = pay_load.color.w;
+        max_alpha = max(max_alpha, alpha);
     }
 
     // color is at least emissive factor color
     vec3 resulting_color = max(object_color, diffuse * emissive_factor);
 
-    pay_load.color = vec4(resulting_color, alpha);
+    pay_load.color = vec4(resulting_color, max_alpha);
     pay_load.distance = gl_HitTEXT;
 }
 
diff --git a/engine/src/scene/rendering/shaders/raytracing/hardware/default/raygen.rgen b/engine/src/scene/rendering/shaders/raytracing/hardware/default/raygen.rgen
index d0022b6..60fdef6 100644
--- a/engine/src/scene/rendering/shaders/raytracing/hardware/default/raygen.rgen
+++ b/engine/src/scene/rendering/shaders/raytracing/hardware/default/raygen.rgen
@@ -59,8 +59,6 @@ void main()
         pay_load_index
     );
 
-
-
     vec3 position;
 
     if (pay_load.distance == -1.0) {