From bd1bc7136c2011e79bef227c602427dc7c036d14 Mon Sep 17 00:00:00 2001
From: itsmattkc <itsmattkc@gmail.com>
Date: Tue, 13 Nov 2018 11:23:22 +1100
Subject: [PATCH] fixed corner pin bug on gles

---
 effects/cornerpin.vert | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/effects/cornerpin.vert b/effects/cornerpin.vert
index 979a66625..de1eacb8c 100644
--- a/effects/cornerpin.vert
+++ b/effects/cornerpin.vert
@@ -48,14 +48,14 @@ void main() {
         vTexCoord = gl_MultiTexCoord0.xy;
     } else {
         vec2 pos;
-
+        
         if (gl_VertexID == 0) { // top left
             pos = p2;
         } else if (gl_VertexID == 1) { // top right
             pos = p3;
         } else if (gl_VertexID == 2) { // bottom right
             pos = p1;
-        } else { // bottom left (3)
+        } else if (gl_VertexID == 3) { // bottom left
             pos = p0;
         }
 
@@ -63,5 +63,5 @@ void main() {
         b1 = p1 - p0;
         b2 = p2 - p0;
         b3 = p0 - p1 - p2 + p3;
-    }    
+    }
 }
\ No newline at end of file