From a496dddae9060bcb708dc3c2454400b5c4310fa4 Mon Sep 17 00:00:00 2001
From: Robert Haschke <rhaschke@techfak.uni-bielefeld.de>
Date: Fri, 18 Mar 2022 08:24:36 +0100
Subject: [PATCH] Drop compatibility mode

---
 ogre_media/materials/glsl150/pass_pos_color.vert | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/ogre_media/materials/glsl150/pass_pos_color.vert b/ogre_media/materials/glsl150/pass_pos_color.vert
index 327dfc9012..216e1feb0a 100644
--- a/ogre_media/materials/glsl150/pass_pos_color.vert
+++ b/ogre_media/materials/glsl150/pass_pos_color.vert
@@ -1,4 +1,9 @@
-#version 150 compatibility
+#version 150
+
+// need to use exactly these names to have OGRE bind the unpacked values:
+// https://ogrecave.github.io/ogre/api/latest/_high-level-_programs.html#Binding-vertex-attributes
+in vec4 vertex;
+in vec4 colour;
 
 // this merely passes over position and color as needed by box.geom
 
@@ -7,6 +12,6 @@ out VertexData {
 } vdata;
 
 void main() {
-    gl_Position = gl_Vertex;
-    vdata.color = gl_Color;
+    gl_Position = vertex;
+    vdata.color = colour;
 }