From f512528d51eb59dea1eb8ddb2c96c96f3fd583b4 Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Sun, 6 Feb 2022 22:42:30 +0100
Subject: Replace deprecated gl_FragColor

---
 boltzgas/visual/view.py | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/boltzgas/visual/view.py b/boltzgas/visual/view.py
index 7d7d2cc..891d0f2 100644
--- a/boltzgas/visual/view.py
+++ b/boltzgas/visual/view.py
@@ -22,6 +22,8 @@ particle_shader = (
             vec2 tex_coord;
         } fs_in;
 
+        layout(location = 0) out vec4 frag_color;
+
         void main(){
             if (length(fs_in.tex_coord - vec2(0.5)) > 0.5) {
                 discard;
@@ -34,7 +36,7 @@ particle_shader = (
             vec3 dir = normalize(camera_pos.xyz - fs_in.particle_pos);
             vec3 color = vec3(1.) * max(0., dot(dir, n));
 
-            gl_FragColor = vec4(color.xyz, 1.0);
+            frag_color = vec4(color.xyz, 1.0);
         }
     """,
     """
@@ -102,8 +104,10 @@ decoration_shader = (
     """
         #version 430
 
+        layout(location = 0) out vec4 frag_color;
+
         void main(){
-            gl_FragColor = vec4(1.);
+            frag_color = vec4(1.);
         }
     """,
     """
@@ -131,12 +135,14 @@ texture_shader = (
 
         uniform float mixing;
 
+        layout(location = 0) out vec4 frag_color;
+
         void main() {
             vec3 color = mix(texture(picture[0], tex_coord), texture(picture[1], tex_coord), mixing).xyz;
             if (color == vec3(0.,0.,0.)) {
-                gl_FragColor = vec4(color, 0.5);
+                frag_color = vec4(color, 0.5);
             } else {
-                gl_FragColor = vec4(color, 1.0);
+                frag_color = vec4(color, 1.0);
             }
         }
     """,
-- 
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