void _drawWithMaskFilter(uiRect meshBounds, uiPaint paint, uiMaskFilter maskFilter,
uiMeshMesh fillMesh, uiMeshMesh strokeMesh, bool convex, float alpha, float strokeMult, Texture tex,
uiRect texBound, TextBlobMesh textMesh, bool notEmoji,
_drawPathDrawMeshCallbackDelegate drawCallback)
{
var layer = this._currentLayer;
var clipBounds = layer.layerBounds;
uiRect?stackBounds;
bool iior;
layer.clipStack.getBounds(out stackBounds, out iior);
if (stackBounds != null)
{
clipBounds = uiRectHelper.intersect(clipBounds, stackBounds.Value);
}
if (clipBounds.isEmpty)
{
this._drawPathDrawMeshQuit(fillMesh, strokeMesh, textMesh);
return;
}
var state = layer.currentState;
float sigma = state.scale * maskFilter.sigma;
if (sigma <= 0)
{
this._drawPathDrawMeshQuit(fillMesh, strokeMesh, textMesh);
return;
}
float sigma3 = 3 * sigma;
var maskBounds = uiRectHelper.inflate(meshBounds, sigma3);
maskBounds = uiRectHelper.intersect(maskBounds, uiRectHelper.inflate(clipBounds, sigma3));
if (maskBounds.isEmpty)
{
this._drawPathDrawMeshQuit(fillMesh, strokeMesh, textMesh);
return;
}
var maskLayer = this._createMaskLayer(layer, maskBounds, drawCallback, paint, convex, alpha, strokeMult,
tex, texBound,
textMesh, fillMesh, strokeMesh, notEmoji);
var blurLayer = this._createBlurLayer(maskLayer, sigma, sigma, layer);
var blurMesh = ImageMeshGenerator.imageMesh(null, uiRectHelper.one, maskBounds);
if (!this._applyClip(blurMesh.bounds))
{
ObjectPool <uiMeshMesh> .release(blurMesh);
return;
}
layer.draws.Add(CanvasShader.texRT(layer, paint, blurMesh, blurLayer));
}
RenderLayer _createMaskLayer(RenderLayer parentLayer, uiRect maskBounds,
_drawPathDrawMeshCallbackDelegate drawCallback,
uiPaint paint, bool convex, float alpha, float strokeMult, Texture tex, uiRect texBound,
TextBlobMesh textMesh,
uiMeshMesh fillMesh, uiMeshMesh strokeMesh, bool notEmoji)
{
var textureWidth = Mathf.CeilToInt(maskBounds.width * this._devicePixelRatio);
if (textureWidth < 1)
{
textureWidth = 1;
}
var textureHeight = Mathf.CeilToInt(maskBounds.height * this._devicePixelRatio);
if (textureHeight < 1)
{
textureHeight = 1;
}
var maskLayer = RenderLayer.create(
rtID: Shader.PropertyToID(this._getNewRenderTextureKey()),
width: textureWidth,
height: textureHeight,
layerBounds: maskBounds,
filterMode: FilterMode.Bilinear,
noMSAA: true
);
parentLayer.addLayer(maskLayer);
this._layers.Add(maskLayer);
this._currentLayer = maskLayer;
var parentState = parentLayer.states[parentLayer.states.Count - 1];
var maskState = maskLayer.states[maskLayer.states.Count - 1];
maskState.matrix = parentState.matrix;
drawCallback.Invoke(uiPaint.shapeOnly(paint), fillMesh, strokeMesh, convex, alpha, strokeMult, tex,
texBound, textMesh, notEmoji);
var removed = this._layers.removeLast();
D.assert(removed == maskLayer);
this._currentLayer = this._layers[this._layers.Count - 1];
return(maskLayer);
}
