From 0cb4914ac9fb8c23d95c083569339e7d642c188f Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Sat, 16 May 2020 11:16:24 +0200
Subject: [PATCH] fixed a bug in gl_FragDepth computation in raycaster

---
 raycaster.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/raycaster.cpp b/raycaster.cpp
index e7e191d7..d311dfa5 100644
--- a/raycaster.cpp
+++ b/raycaster.cpp
@@ -890,7 +890,7 @@ void enable_raycaster() {
 
     #ifndef GLES_ONLY
     fmain +=    
-      "      gl_FragDepth = (" + to_glsl(-vnear+vfar)+"+w*" + to_glsl(2*vnear*vfar)+"/z)/" + to_glsl(vnear-vfar)+";\n"
+      "      gl_FragDepth = (" + to_glsl(-vnear-vfar)+"+w*" + to_glsl(2*vnear*vfar)+"/z)/" + to_glsl(vnear-vfar)+";\n"
       "      gl_FragDepth = (gl_FragDepth + 1.) / 2.;\n";
     #endif