feat: Event & Teleporter

Assets/_Content/Shaders/Include/Blur.hlsl

@@ -0,0 +1,82 @@
+
+#ifndef BLUR_INCLUDED
+#define BLUR_INCLUDED
+
+// Declare the texture only when the required macros exist.
+#if defined(TEXTURE2D_X) && defined(SAMPLE_TEXTURE2D_X)
+#define BLUR_TEXTURE_AVAILABLE 1
+    TEXTURE2D_X(_CameraOpaqueTexture);
+    SAMPLER(sampler_CameraOpaqueTexture);
+#else
+#define BLUR_TEXTURE_AVAILABLE 0
+#endif
+
+void Gaussian_float(float2 UV, float Blur, float Quality, out float3 Color)
+{
+#if defined(SHADERGRAPH_PREVIEW) || !BLUR_TEXTURE_AVAILABLE
+    Color = float3(0.5, 0.5, 0.5);
+#else
+    float2 screenUV = saturate(UV);
+    float radius = saturate(Blur) * 0.04;
+    float2 stepUV = radius * float2(
+        _ScreenParams.y / _ScreenParams.x,
+        1.0
+    );
+
+    // LOW: 9 samples
+    // MEDIUM: 25 samples
+    // HIGH: 49 samples
+    int extent = (int)clamp(floor(Quality + 0.5), 0.0, 2.0) + 1;
+
+    float sigma = max(0.8, extent * 0.65);
+    float invTwoSigmaSq = 0.5 / (sigma * sigma);
+
+    float3 sum = 0.0;
+    float totalWeight = 0.0;
+
+    [loop]
+    for (int y = -extent; y <= extent; ++y)
+    {
+        [loop]
+        for (int x = -extent; x <= extent; ++x)
+        {
+            float2 offset = float2(x, y);
+
+            float weight = exp2(
+                -dot(offset, offset)
+                * invTwoSigmaSq
+                * 1.44269504089
+            );
+
+            float2 sampleUV = saturate(
+                screenUV + offset * stepUV / extent
+            );
+
+            float3 sampleColor = SAMPLE_TEXTURE2D_X(
+                _CameraOpaqueTexture,
+                sampler_CameraOpaqueTexture,
+                sampleUV
+            ).rgb;
+
+            sum += sampleColor * weight;
+            totalWeight += weight;
+        }
+    }
+
+    Color = sum / max(totalWeight, 1e-5);
+#endif
+}
+
+void Gaussian_half(half2 UV, half Blur, half Quality, out half3 Color)
+{
+    float3 result;
+    Gaussian_float(
+        (float2) UV,
+        (float) Blur,
+        (float) Quality,
+        result
+    );
+    Color = (half3) result;
+}
+
+#endif