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Fix blur size independence from sample count 

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>
This commit is contained in:
copilot-swe-agent[bot] 2025-09-20 02:51:53 +00:00
parent c33d349390
commit 4b93e5fd7b
1 changed files with 9 additions and 3 deletions
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12
packages/frontend/src/utility/image-effector/fxs/blur.ts
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@ -22,17 +22,23 @@ void main() {
float totalSamples = 0.0; float totalSamples = 0.0;
// Simple box blur with configurable sample count // Simple box blur with configurable sample count
// Based on the original cross pattern but with more samples // The radius controls visual blur size, samples controls quality within that radius
int samples = min(u_samples, 128); int samples = min(u_samples, 128);
float radius = u_radius; float radius = u_radius;
// Calculate how many samples to take in each direction // Calculate how many samples to take in each direction
// This determines the grid density, not the blur extent
int sampleRadius = int(sqrt(float(samples)) / 2.0); int sampleRadius = int(sqrt(float(samples)) / 2.0);
// Sample in a grid pattern around the center // Sample in a grid pattern within the specified radius
for (int x = -sampleRadius; x <= sampleRadius; x++) { for (int x = -sampleRadius; x <= sampleRadius; x++) {
for (int y = -sampleRadius; y <= sampleRadius; y++) { for (int y = -sampleRadius; y <= sampleRadius; y++) {
vec2 offset = vec2(float(x), float(y)) * texelSize * radius; // Normalize the grid position to [-1, 1] range
float normalizedX = float(x) / float(sampleRadius);
float normalizedY = float(y) / float(sampleRadius);
// Scale by radius to get the actual sampling offset
vec2 offset = vec2(normalizedX, normalizedY) * texelSize * radius;
vec2 sampleUV = in_uv + offset; vec2 sampleUV = in_uv + offset;
// Only sample if within texture bounds // Only sample if within texture bounds