✨ "Displacement Map (Source)" filter

data/effects/filters/displacement_map_source/main.hlsl

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+uniform texture2d displacement_map;
+uniform float displacement_strength_x;
+uniform float displacement_strength_y;
+uniform int color_space;
+//----------------------------------------------------------------------------------------------------------------------
+
+// These are required objects for the shader to work.
+// You don't need to change anything here, unless you know what you are doing
+sampler_state textureSampler {
+    Filter    = Linear;
+    AddressU  = Clamp;
+    AddressV  = Clamp;
+};
+
+struct VertData {
+    float2 uv  : TEXCOORD0;
+    float4 pos : POSITION;
+};
+
+struct FragData {
+    float2 uv  : TEXCOORD0;
+};
+
+VertData VSDefault(VertData v_in)
+{
+    VertData vert_out;
+    vert_out.uv  = v_in.uv;
+    vert_out.pos = mul(float4(v_in.pos.xyz, 1.0), ViewProj);
+    return vert_out;
+}
+//----------------------------------------------------------------------------------------------------------------------
+
+float3 rgbToYuv(float3 rgb)
+{
+    return float3(
+        ( 0.257 * rgb.r + 0.504 * rgb.g + 0.098 * rgb.b) / 0.859,
+        (-0.148 * rgb.r - 0.291 * rgb.g + 0.439 * rgb.b),
+        ( 0.439 * rgb.r - 0.368 * rgb.g - 0.071 * rgb.b)
+    );
+}
+//----------------------------------------------------------------------------------------------------------------------
+
+float4 EffectLinear(float2 uv)
+{
+    float2 displacement_strength = float2(displacement_strength_x, displacement_strength_y);
+    if (color_space == 0) { // RGB
+        float4 mask = displacement_map.Sample(textureSampler, uv);
+        float2 uv2 = uv + displacement_strength*float2(mask.x - 0.5, mask.y - 0.5);
+        float4 px = image.Sample(textureSampler, uv2);
+        return px;
+    }
+    else if (color_space == 1) { // YUV
+        float4 mask = displacement_map.Sample(textureSampler, uv);
+        float3 mask_yuv = rgbToYuv(mask.rgb);
+        float2 uv2 = uv + displacement_strength*float2(mask_yuv.y, mask_yuv.z);
+        float4 px = image.Sample(textureSampler, uv2);
+        return px;
+    }
+    else {
+        // Should not happen
+        return image.Sample(textureSampler, uv);
+    }
+}
+//----------------------------------------------------------------------------------------------------------------------
+
+// You probably don't want to change anything from this point.
+
+float4 PSEffect(FragData f_in) : TARGET
+{
+    float4 rgba = EffectLinear(f_in.uv);
+    return rgba;
+}
+
+technique Draw
+{
+    pass
+    {
+        vertex_shader = VSDefault(v_in);
+        pixel_shader = PSEffect(f_in);
+    }
+}

data/effects/filters/displacement_map_source/meta.json

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+{
+  "label": "Displacement Map (Source)",
+  "steps": 1,
+  "input_time": false,
+  "parameters": [
+    {
+      "name": "color_space",
+      "label": "Color Space",
+      "type": "list_int",
+      "values": [
+        {"label": "RGB", "value": 0},
+        {"label": "YUV", "value": 1}
+      ],
+      "default": 0
+    },
+    {
+      "name": "displacement_strength_x",
+      "label": "Strength X",
+      "type": "double",
+      "slider": true,
+      "min": 0,
+      "max": 2.0,
+      "default": 0.05,
+      "step": 0.001
+    },
+    {
+      "name": "displacement_strength_y",
+      "label": "Strength Y",
+      "type": "double",
+      "slider": true,
+      "min": 0,
+      "max": 2.0,
+      "default": 0.05,
+      "step": 0.001
+    },
+    {
+      "name": "displacement_map",
+      "label": "Displacement Map",
+      "type": "source"
+    }
+  ]
+}