Enabled text overlay, code cleanup, refactoring, gl_PerVertex output for shaders

data/shaders/shadowmapomni/cubemapdisplay.vert

@@ -14,6 +14,11 @@ layout (binding = 0) uniform UBO
 
 layout (location = 0) out vec3 outUVW;
 
+out gl_PerVertex 
+{
+	vec4 gl_Position;
+};
+
 void main() 
 {
 	outUVW = inPos;

data/shaders/shadowmapomni/offscreen.vert

@@ -21,6 +21,11 @@ layout(push_constant) uniform PushConsts
 	mat4 view;
 } pushConsts;
  
+out gl_PerVertex 
+{
+	vec4 gl_Position;
+};
+ 
 void main()
 {
 	gl_Position = ubo.projection * pushConsts.view * ubo.model * vec4(inPos, 1.0);

data/shaders/shadowmapomni/scene.vert

@@ -22,6 +22,11 @@ layout (location = 3) out vec3 outLightVec;
 layout (location = 4) out vec3 outWorldPos;
 layout (location = 5) out vec3 outLightPos;
 
+out gl_PerVertex 
+{
+	vec4 gl_Position;
+};
+
 void main() 
 {
 	outColor = inColor;