edit blob shader
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@@ -138,75 +138,6 @@ void main() {
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d *= scale;
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d *= scale;
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}
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}
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// Rect-to-rect edge sinks: track the same edge of neighboring rects
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{
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float rectSinkValue = 0.0;
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vec2 iHalf = sh.xy;
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float preOff = smoothFactor * (1.0 / 6.0);
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for (int j = 0; j < rectCount; j++) {
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if (j == i)
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continue;
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vec4 jRect = rectData[j * 5];
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vec4 jProps = rectData[j * 5 + 1];
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vec2 jSh = rectData[j * 5 + 3].xy;
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vec2 jCtr = jRect.xy + jProps.yz;
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// Per-edge containment: the other rect's full span on the
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// perpendicular axis must be inside this rect for that edge.
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bool hInside = (jCtr.y - jSh.y) >= (center.y - iHalf.y) &&
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(jCtr.y + jSh.y) <= (center.y + iHalf.y);
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bool vInside = (jCtr.x - jSh.x) >= (center.x - iHalf.x) &&
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(jCtr.x + jSh.x) <= (center.x + iHalf.x);
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// Top/Bottom: other rect's height must be inside this rect
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float topPen =
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hInside ? clamp((center.y - iHalf.y) - (jCtr.y - jSh.y) - preOff,
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0.0, smoothFactor)
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: 0.0;
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float botPen =
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hInside ? clamp((jCtr.y + jSh.y) - (center.y + iHalf.y) - preOff,
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0.0, smoothFactor)
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: 0.0;
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// Left/Right: other rect's width must be inside this rect
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float leftPen =
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vInside ? clamp((center.x - iHalf.x) - (jCtr.x - jSh.x) - preOff,
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0.0, smoothFactor)
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: 0.0;
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float rightPen =
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vInside ? clamp((jCtr.x + jSh.x) - (center.x + iHalf.x) - preOff,
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0.0, smoothFactor)
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: 0.0;
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// Lateral distance from pixel to other rect's extent along each edge
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float hLat = max(abs(pixel.x - jCtr.x) - jSh.x, 0.0);
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float vLat = max(abs(pixel.y - jCtr.y) - jSh.y, 0.0);
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// Perpendicular proximity: full strength at edge, fade inside
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float topZone =
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1.0 - smoothstep(center.y - iHalf.y,
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center.y - iHalf.y + smoothFactor, pixel.y);
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float botZone = smoothstep(center.y + iHalf.y - smoothFactor,
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center.y + iHalf.y, pixel.y);
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float leftZone =
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1.0 - smoothstep(center.x - iHalf.x,
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center.x - iHalf.x + smoothFactor, pixel.x);
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float rightZone = smoothstep(center.x + iHalf.x - smoothFactor,
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center.x + iHalf.x, pixel.x);
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float s = smoothFactor * 2.0;
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float sink = max(max(topPen * smoothstep(s, 0.0, hLat) * topZone,
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botPen * smoothstep(s, 0.0, hLat) * botZone),
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max(leftPen * smoothstep(s, 0.0, vLat) * leftZone,
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rightPen * smoothstep(s, 0.0, vLat) * rightZone));
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rectSinkValue = max(rectSinkValue, sink);
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}
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d -= rectSinkValue;
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}
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mergedSdf = smin(mergedSdf, d, smoothFactor);
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mergedSdf = smin(mergedSdf, d, smoothFactor);
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if (d < smoothFactor && d < minDist) {
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if (d < smoothFactor && d < minDist) {
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minDist = d;
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minDist = d;
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