feat: New Theatre volumetric rays

Assets/_Content/Models/VFX/Ray/Shaders/include/Ray.hlsl

@@ -25,7 +25,7 @@ float3 GetBillboardPositionWS(float3 PositionOS, float3 PivotWS, float3 ViewDirW
 
 float3 ApplayerTaperAndScale(float3 PositionOS, float3 Scale)
 {
-    float taper = lerp(Scale.z, 1, saturate(PositionOS.y));
+    float taper = lerp(1, Scale.z, saturate(PositionOS.y));
 
     float3 p = PositionOS;
     p.xy *= Scale.xy;
@@ -36,10 +36,14 @@ float3 ApplayerTaperAndScale(float3 PositionOS, float3 Scale)
 
 void Ray_float
 (
-    float3 Color,
+    float Size,
+    float Speed,
+    float Intensity,
+    float4 Color,
     float3 PositionOS,
     float4 ScreenPos,
     uint Orthographic,
+    float UvDebug,
     out float3 OutPosition,
     out float3 OutColor
 )
@@ -69,6 +73,24 @@ void Ray_float
     
     float2 uv = float2(distance(pSC_0.x, pSC_2.x) / distance(pSC_1.x, pSC_2.x), pOS_0.y / scale.y);
     
+    float mask = smoothstep(1, .2, abs(uv.x * 2 - 1));
+    mask *= smoothstep(0, .1, uv.y);
+    mask *= pow(smoothstep(1, .3, uv.y * .95), 2);
+    mask *= smoothstep(1, .98, dot(-viewDir, normalize(TransformObjectToWorldDir(float3(0, 1, 0)))));
+    
+    float noise = 1;
+    if (Intensity > 0)
+    {
+        float3 noisePos = pivot;
+        noisePos += float3(uv.x - .5, 0 /*uv.y * .05 / scale.x*/, _Time.y / scale.x / scale.z / Size * Speed * .2);
+        
+        noise = SimplexNoise3D(noisePos, scale.x * scale.z * Size);
+        noise = lerp(1, noise, Intensity);
+    }
+    
     OutPosition = TransformWorldToObject(pWS_0);
-    OutColor = float3(uv, 0);
+    OutColor = saturate(noise * mask) * Color.rgb * Color.a;
+    
+    if (UvDebug > 0)
+        OutColor = lerp(OutColor, float3(uv, 0), UvDebug);
 }