Fix Sky Shader on Android/S6 (mrdoob#8382) (mrdoob#8614)

brianchirls · mrdoob · commit e62a212bcd32 · 2016-06-13T08:42:55.000-07:00
* Fix Sky Shader on Android/S6 (mrdoob#8382) `exp(n)` does not return the correct value, so I replaced it with `pow(e, n)`. * Editor: Include VRControls/VREffect when needed. * Editor: Workaround for Storage not being ready in time. * Editor: Fixed edit button. * Added comment explaining change in shader function mrdoob#8382, mrdoob#8614
diff --git a/examples/js/SkyShader.js b/examples/js/SkyShader.js
@@ -126,7 +126,10 @@ THREE.ShaderLib[ 'sky' ] = {
 
 		"float sunIntensity(float zenithAngleCos)",
 		"{",
-			"return EE * max(0.0, 1.0 - exp(-((cutoffAngle - acos(zenithAngleCos))/steepness)));",
+		// This function originally used `exp(n)`, but it returns an incorrect value
+		// on Samsung S6 phones. So it has been replaced with the equivalent `pow(e, n)`.
+		// See https://github.com/mrdoob/three.js/issues/8382
+			"return EE * max(0.0, 1.0 - pow(e, -((cutoffAngle - acos(zenithAngleCos))/steepness)));",
 		"}",
 
 		"// float logLuminance(vec3 c)",
