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Add texel spacing multiplier for Bilateral blur filter #524

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Add texel spacing multiplier for Bilateral blur filter #524

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9 changes: 8 additions & 1 deletion ...y/src/main/java/jp/co/cyberagent/android/gpuimage/filter/GPUImageBilateralBlurFilter.java
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Original file line number Diff line number Diff line change
Expand Up @@ -113,6 +113,7 @@ public class GPUImageBilateralBlurFilter extends GPUImageFilter {
private float distanceNormalizationFactor;
private int disFactorLocation;
private int singleStepOffsetLocation;
private float texelSpacingMultiplier;

public GPUImageBilateralBlurFilter() {
this(8.0f);
Expand All @@ -121,6 +122,7 @@ public GPUImageBilateralBlurFilter() {
public GPUImageBilateralBlurFilter(final float distanceNormalizationFactor) {
super(BILATERAL_VERTEX_SHADER, BILATERAL_FRAGMENT_SHADER);
this.distanceNormalizationFactor = distanceNormalizationFactor;
this.texelSpacingMultiplier = 4.0f;
}

@Override
Expand All @@ -142,7 +144,12 @@ public void setDistanceNormalizationFactor(final float newValue) {
}

private void setTexelSize(final float w, final float h) {
setFloatVec2(singleStepOffsetLocation, new float[]{1.0f / w, 1.0f / h});
setFloatVec2(singleStepOffsetLocation, new float[]{texelSpacingMultiplier / w, texelSpacingMultiplier / h});
}

public void setTexelSpacingMultiplier(float texelSpacingMultiplier) {
this.texelSpacingMultiplier = texelSpacingMultiplier;
setTexelSize(getOutputWidth(), getOutputHeight());
}

@Override
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