alpha ref fix

WickedEngine/globals.hlsli

@@ -58,7 +58,7 @@ inline bool is_saturated(float4 a) { return is_saturated(a.x) && is_saturated(a.
 #ifdef DISABLE_ALPHATEST
 #define ALPHATEST(x)
 #else
-#define ALPHATEST(x)	clip((x) - (1.0f - g_xAlphaRef));
+#define ALPHATEST(x)	clip((x) - g_xAlphaRef);
 #endif
 
 #define DEGAMMA_SKY(x)	pow(abs(x),g_xFrame_StaticSkyGamma)

WickedEngine/wiRenderer.cpp

@@ -8705,7 +8705,7 @@ void SetAlphaRef(float alphaRef, CommandList cmd)
 {
 	if (alphaRef != apiCB[cmd].g_xAlphaRef)
 	{
-		apiCB[cmd].g_xAlphaRef = alphaRef;
+		apiCB[cmd].g_xAlphaRef = 1 - alphaRef + 1.0f / 256.0f; // 256 so that it is just about smaller than 1 unorm unit (1.0/255.0)
 		GetDevice()->UpdateBuffer(&constantBuffers[CBTYPE_API], &apiCB[cmd], cmd);
 	}
 }

WickedEngine/wiVersion.cpp

@@ -9,7 +9,7 @@ namespace wiVersion
 	// minor features, major updates
 	const int minor = 39;
 	// minor bug fixes, alterations, refactors, updates
-	const int revision = 57;
+	const int revision = 58;
 
 
 	long GetVersion()