From 4c1c5971f8fd53b5502b4bd2993ebc4c6363ac1b Mon Sep 17 00:00:00 2001
From: Ethan Lee <flibitijibibo@flibitijibibo.com>
Date: Wed, 6 Mar 2019 15:09:49 -0500
Subject: [PATCH] gl_Position only works for POSITION0

---
 mojoshader.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/mojoshader.c b/mojoshader.c
index 589bedea..a5064f2e 100644
--- a/mojoshader.c
+++ b/mojoshader.c
@@ -2623,7 +2623,10 @@ static void emit_GLSL_attribute(Context *ctx, RegisterType regtype, int regnum,
             switch (usage)
             {
                 case MOJOSHADER_USAGE_POSITION:
-                    usage_str = "gl_Position";
+                    if (index == 0)
+                    {
+                        usage_str = "gl_Position";
+                    } // if
                     break;
                 case MOJOSHADER_USAGE_POINTSIZE:
                     usage_str = "gl_PointSize";