Gem 0002aa3425e54b0c993fc9a5009ee7798aa3ba01 osx/x86_64

built 'master:0002aa3425e54b0c993fc9a5009ee7798aa3ba01' for osx/x86_64

1 files changed, 17 insertions, 0 deletions

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;
+}