RenderLayer _createBlurLayer(RenderLayer maskLayer, float sigmaX, float sigmaY, RenderLayer parentLayer)
{
sigmaX = BlurUtils.adjustSigma(sigmaX, out var scaleFactorX, out var radiusX);
sigmaY = BlurUtils.adjustSigma(sigmaY, out var scaleFactorY, out var radiusY);
var textureWidth = Mathf.CeilToInt((float)maskLayer.width / scaleFactorX);
if (textureWidth < 1)
{
textureWidth = 1;
}
var textureHeight = Mathf.CeilToInt((float)maskLayer.height / scaleFactorY);
if (textureHeight < 1)
{
textureHeight = 1;
}
var blurXLayer = RenderLayer.create(
rtID: Shader.PropertyToID(this._getNewRenderTextureKey()),
width: textureWidth,
height: textureHeight,
layerBounds: maskLayer.layerBounds,
filterMode: FilterMode.Bilinear,
noMSAA: true
);
parentLayer.addLayer(blurXLayer);
var blurYLayer = RenderLayer.create(
rtID: Shader.PropertyToID(this._getNewRenderTextureKey()),
width: textureWidth,
height: textureHeight,
layerBounds: maskLayer.layerBounds,
filterMode: FilterMode.Bilinear,
noMSAA: true
);
parentLayer.addLayer(blurYLayer);
var blurMesh = ImageMeshGenerator.imageMesh(null, uiRectHelper.one, maskLayer.layerBounds);
var kernelX = BlurUtils.get1DGaussianKernel(sigmaX, radiusX);
var kernelY = BlurUtils.get1DGaussianKernel(sigmaY, radiusY);
blurXLayer.draws.Add(CanvasShader.maskFilter(
blurXLayer, blurMesh, maskLayer,
radiusX, new Vector2(1f / textureWidth, 0), kernelX));
blurYLayer.draws.Add(CanvasShader.maskFilter(
blurYLayer, blurMesh.duplicate(), blurXLayer,
radiusY, new Vector2(0, -1f / textureHeight), kernelY));
return(blurYLayer);
}
RenderLayer _createBlurLayer(RenderLayer maskLayer, float sigma, RenderLayer parentLayer)
{
sigma = BlurUtils.adjustSigma(sigma, out var scaleFactor, out var radius);
var textureWidth = Mathf.CeilToInt((float)maskLayer.width / scaleFactor);
if (textureWidth < 1)
{
textureWidth = 1;
}
var textureHeight = Mathf.CeilToInt((float)maskLayer.height / scaleFactor);
if (textureHeight < 1)
{
textureHeight = 1;
}
var blurXLayer = new RenderLayer {
rtID = Shader.PropertyToID("_rtID_" + this._layers.Count + "_" + parentLayer.layers.Count),
width = textureWidth,
height = textureHeight,
layerBounds = maskLayer.layerBounds,
filterMode = FilterMode.Bilinear,
};
parentLayer.layers.Add(blurXLayer);
var blurYLayer = new RenderLayer {
rtID = Shader.PropertyToID("_rtID_" + this._layers.Count + "_" + parentLayer.layers.Count),
width = textureWidth,
height = textureHeight,
layerBounds = maskLayer.layerBounds,
filterMode = FilterMode.Bilinear,
};
parentLayer.layers.Add(blurYLayer);
var blurMesh = ImageMeshGenerator.imageMesh(null, Rect.one, maskLayer.layerBounds);
var kernel = BlurUtils.get1DGaussianKernel(sigma, radius);
blurXLayer.draws.Add(CanvasShader.maskFilter(
blurXLayer, blurMesh, maskLayer,
radius, new Vector2(1f / textureWidth, 0), kernel));
blurYLayer.draws.Add(CanvasShader.maskFilter(
blurYLayer, blurMesh, blurXLayer,
radius, new Vector2(0, -1f / textureHeight), kernel));
return(blurYLayer);
}