First Commit

shaders/fxaa.wgsl

@@ -0,0 +1,53 @@
+@group(0) @binding(0)
+var mySampler : sampler;
+
+@group(0) @binding(1)
+var myTexture : texture_2d<f32>;
+
+@group(0) @binding(2)
+var<uniform> resolution : vec2<f32>;
+
+struct VertexOutput {
+    @builtin(position) position : vec4<f32>,
+    @location(0) uv : vec2<f32>,
+};
+
+@vertex
+fn vertexMain(@location(0) position : vec3<f32>, @location(1) uv : vec2<f32>) -> VertexOutput {
+    var out : VertexOutput;
+    out.position = vec4<f32>(position, 1.0);
+    out.uv = uv;
+    return out;
+}
+
+@fragment
+fn fragmentMain(@location(0) uv : vec2<f32>) -> @location(0) vec4<f32> {
+    let texelSize = 1.0 / resolution;
+    
+    // Sample surrounding pixels
+    let colorCenter = textureSample(myTexture, mySampler, uv);
+    let colorN = textureSample(myTexture, mySampler, uv + vec2<f32>(0.0, texelSize.y));
+    let colorS = textureSample(myTexture, mySampler, uv - vec2<f32>(0.0, texelSize.y));
+    let colorE = textureSample(myTexture, mySampler, uv + vec2<f32>(texelSize.x, 0.0));
+    let colorW = textureSample(myTexture, mySampler, uv - vec2<f32>(texelSize.x, 0.0));
+
+    let luma = dot(colorCenter.rgb, vec3<f32>(0.299, 0.587, 0.114));
+    let lumaN = dot(colorN.rgb, vec3<f32>(0.299, 0.587, 0.114));
+    let lumaS = dot(colorS.rgb, vec3<f32>(0.299, 0.587, 0.114));
+    let lumaE = dot(colorE.rgb, vec3<f32>(0.299, 0.587, 0.114));
+    let lumaW = dot(colorW.rgb, vec3<f32>(0.299, 0.587, 0.114));
+
+    let edgeH = abs(lumaW - lumaE);
+    let edgeV = abs(lumaN - lumaS);
+    let edge = max(edgeH, edgeV);
+
+    let threshold = 0.1;
+
+    if (edge < threshold) {
+        return colorCenter; // No edge — return original
+    }
+
+    // Basic blur
+    let blur = (colorN + colorS + colorE + colorW) * 0.25;
+    return vec4<f32>(blur.rgb, 1.0);
+}