From 01015ee03992ae5a633f81aab434c905e1250c21 Mon Sep 17 00:00:00 2001
From: Travis CI <zmoelnig@travis-ci.umlaeute.mur.at>
Date: Mon, 28 Nov 2016 12:49:04 +0000
Subject: Gem 83e036efcfb97e8901669d4a49273f2f30283745 linux/amd64

built 'master:83e036efcfb97e8901669d4a49273f2f30283745' for linux/amd64
---
 Gem/cubemaptosphere.frag | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 Gem/cubemaptosphere.frag

(limited to 'Gem/cubemaptosphere.frag')

diff --git a/Gem/cubemaptosphere.frag b/Gem/cubemaptosphere.frag
new file mode 100644
index 0000000..cd2befb
--- /dev/null
+++ b/Gem/cubemaptosphere.frag
@@ -0,0 +1,17 @@
+// Antoine Rousseau september 2015
+#version 120
+
+uniform samplerCube envMap;
+uniform float alpha = 1.0;
+
+void main() {
+  
+    vec2 tc = gl_TexCoord[0].st ;
+    vec2 thetaphi = ((tc * 2.0) - vec2(1.0)) * vec2(3.1415926535897932384626433832795, 1.5707963267948966192313216916398);
+    float ctpy = cos(thetaphi.y);
+    
+    vec3 rayDirection = vec3(ctpy * cos(thetaphi.x), sin(thetaphi.y), ctpy * sin(thetaphi.x));
+    
+    gl_FragColor = textureCube(envMap, rayDirection);
+    gl_FragColor.a *= alpha;
+}
-- 
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