[feat]: migrate to slang from glsl

1 files changed, 60 insertions, 0 deletions

diff --git a/Assets/Shaders/Blur.slang b/Assets/Shaders/Blur.slang
new file mode 100644
index 0000000..17e4eae
--- /dev/null
+++ b/Assets/Shaders/Blur.slang
@@ -0,0 +1,60 @@
+struct VSInput
+{
+    float2 position : POSITION;
+    float2 texCoord : TEXCOORD0;
+};
+
+struct VSOutput
+{
+    float4 position : SV_Position;
+    float2 texCoord : TEXCOORD0;
+};
+
+[shader("vertex")]
+VSOutput vertexMain(VSInput input)
+{
+    VSOutput output;
+    output.position = float4(input.position, 0.0, 1.0);
+    output.texCoord = input.texCoord;
+    return output;
+}
+
+Sampler2D u_ScreenTexture;
+uniform float2 u_Resolution;
+uniform float  u_BlurStrength;
+uniform float  u_GlowIntensity;
+
+[shader("fragment")]
+float4 fragmentMain(VSOutput input) : SV_Target
+{
+    float2 texelSize = 1.0 / u_Resolution;
+    float4 centerColor = u_ScreenTexture.Sample(input.texCoord);
+
+    float brightness = (centerColor.r + centerColor.g + centerColor.b) / 3.0;
+    float glowMask   = smoothstep(0.05, 0.3, brightness);
+
+    float4 blurredColor = float4(0.0, 0.0, 0.0, 0.0);
+    float  totalWeight  = 0.0;
+
+    for (int x = -8; x <= 8; x++)
+    {
+        for (int y = -8; y <= 8; y++)
+        {
+            float2 offset = float2(x, y) * texelSize * u_BlurStrength;
+            float4 sampleColor = u_ScreenTexture.Sample(input.texCoord + offset);
+
+            float weight = exp(-float(x * x + y * y) / (2.0 * 8.0 * 8.0));
+            blurredColor += sampleColor * weight;
+            totalWeight  += weight;
+        }
+    }
+
+    blurredColor /= totalWeight;
+
+    float3 emissionColor = float3(1.0, 0.8, 0.6);
+    float3 glowColor     = emissionColor * glowMask * u_GlowIntensity * 2.0;
+    float3 auraColor     = blurredColor.rgb * glowMask * u_GlowIntensity * 0.8;
+    float3 finalColor    = centerColor.rgb + glowColor + auraColor;
+
+    return float4(finalColor, centerColor.a);
+}