From 95142dbc573d2792f021eb0eb7ae1c7cb96641b0 Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Wed, 25 Sep 2019 21:55:01 +0200
Subject: Use floats for texture storage, test curl visualization

Using `GL_RGBA32F` as the texture storage format instead of packing
values into the unit interval.
---
 template/opengl.mako | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'template')

diff --git a/template/opengl.mako b/template/opengl.mako
index 50cdbbc..52699d5 100644
--- a/template/opengl.mako
+++ b/template/opengl.mako
@@ -115,7 +115,7 @@ __kernel void collect_gl_moments_to_texture(__global __read_only  ${float_type}*
       if (material_up    != 5) { n.z = -1; }
       if (material_down  != 5) { n.z =  1; }
 
-      data.xyz = 0.5 + 0.5*n; // pack surface normal into texture
+      data.xyz = normalize(n);
       data.w   = 1.0; // signal impermeable material to raytracer
     }
 
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