Fix

Projekte/mdga/client/src/main/resources/MatDefs/SelectObjectOutliner/OutlinePre.frag

@@ -1,10 +1,18 @@
-varying vec2 texCoord;
 
+// Use 'in' instead of 'varying' for inputs from the vertex shader
+in vec2 texCoord;
+
+// Declare a custom output variable for the fragment color
+out vec4 fragColor;
+
+// Uniform samplers
 uniform sampler2D m_Texture;
 uniform sampler2D m_NormalsTexture;
 uniform sampler2D m_DepthTexture;
 
-void main(){
-    vec4 color = texture2D(m_Texture, texCoord);
-	gl_FragColor=color;
-}
+void main() {
+    // Sample the texture at the given texture coordinates
+    vec4 color = texture(m_Texture, texCoord);
+    // Assign the color to the output variable
+    fragColor = color;
+}