void _drawImageRect(Image image, uiRect?src, uiRect dst, uiPaint paint)
{
D.assert(image != null && image.valid);
if (image == null || !image.valid)
{
return;
}
if (src == null)
{
src = uiRectHelper.one;
}
else
{
src = uiRectHelper.scale(src.Value, 1f / image.width, 1f / image.height);
}
var layer = this._currentLayer;
var state = layer.currentState;
var mesh = ImageMeshGenerator.imageMesh(state.matrix, src.Value, dst);
if (!this._applyClip(mesh.bounds))
{
ObjectPool <uiMeshMesh> .release(mesh);
return;
}
layer.draws.Add(CanvasShader.tex(layer, paint, mesh, image));
}
public void drawImageRect(Image image, Rect src, Rect dst, Paint paint)
{
D.assert(image != null);
D.assert(dst != null);
D.assert(paint != null);
if (src == null)
{
src = Rect.one;
}
else
{
src = src.scale(1f / image.width, 1f / image.height);
}
var state = this._getState();
var mesh = ImageMeshGenerator.imageMesh(state.matrix, src, dst);
if (!this._applyClip(mesh.bounds))
{
return;
}
var layer = this._getLayer();
layer.draws.Add(CanvasShader.tex(layer, paint, mesh, image));
}
public void restore()
{
this._saveCount--;
var layer = this._getLayer();
D.assert(layer.states.Count > 0);
if (layer.states.Count > 1)
{
layer.states.RemoveAt(layer.states.Count - 1);
layer.clipStack.restore();
return;
}
this._layers.RemoveAt(this._layers.Count - 1);
var state = this._getState();
var mesh = ImageMeshGenerator.imageMesh(state.matrix, Rect.one, layer.layerBounds);
if (!this._applyClip(mesh.bounds))
{
return;
}
var renderDraw = CanvasShader.texRT(this._getLayer(), layer.layerPaint, mesh, layer);
this._getLayer().draws.Add(renderDraw);
}
void _drawImageNine(Image image, Rect src, Rect center, Rect dst, Paint paint)
{
D.assert(image != null);
D.assert(center != null);
D.assert(dst != null);
D.assert(paint != null);
var scaleX = 1f / image.width;
var scaleY = 1f / image.height;
if (src == null)
{
src = Rect.one;
}
else
{
src = src.scale(scaleX, scaleY);
}
center = center.scale(scaleX, scaleY);
var layer = this._currentLayer;
var state = layer.currentState;
var mesh = ImageMeshGenerator.imageNineMesh(state.matrix, src, center, image.width, image.height, dst);
if (!this._applyClip(mesh.bounds))
{
return;
}
layer.draws.Add(CanvasShader.tex(layer, paint, mesh, image));
}
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));
}
void _drawPathDrawMeshCallback(uiPaint p, uiMeshMesh fillMesh, uiMeshMesh strokeMesh, bool convex, float alpha,
float strokeMult, Texture tex,
uiRect textBlobBounds, TextBlobMesh textMesh, bool notEmoji)
{
if (!this._applyClip(fillMesh.bounds))
{
ObjectPool <uiMeshMesh> .release(fillMesh);
ObjectPool <uiMeshMesh> .release(strokeMesh);
return;
}
var layer = this._currentLayer;
if (convex)
{
layer.draws.Add(CanvasShader.convexFill(layer, p, fillMesh));
}
else
{
layer.draws.Add(CanvasShader.fill0(layer, fillMesh));
layer.draws.Add(CanvasShader.fill1(layer, p, fillMesh.boundsMesh));
}
if (strokeMesh != null)
{
layer.draws.Add(CanvasShader.strokeAlpha(layer, p, alpha, strokeMult, strokeMesh));
layer.draws.Add(CanvasShader.stroke1(layer, strokeMesh.duplicate()));
}
}
void _drawTextDrawMeshCallback(uiPaint p, uiMeshMesh fillMesh, uiMeshMesh strokeMesh, bool convex, float alpha,
float strokeMult, Texture tex,
uiRect textBlobBounds, TextBlobMesh textMesh, bool notEmoji)
{
if (!this._applyClip(textBlobBounds))
{
ObjectPool <TextBlobMesh> .release(textMesh);
return;
}
var layer = this._currentLayer;
if (notEmoji)
{
layer.draws.Add(CanvasShader.texAlpha(layer, p, textMesh, tex));
}
else
{
uiPaint paintWithWhite = new uiPaint(p);
paintWithWhite.color = uiColor.white;
if (EmojiUtils.image == null)
{
ObjectPool <TextBlobMesh> .release(textMesh);
return;
}
var raw_mesh = textMesh.resolveMesh();
var meshmesh = raw_mesh.duplicate();
ObjectPool <TextBlobMesh> .release(textMesh);
layer.draws.Add(CanvasShader.tex(layer, paintWithWhite, meshmesh, EmojiUtils.image));
}
}
void _restore()
{
var layer = this._currentLayer;
D.assert(layer.states.Count > 0);
if (layer.states.Count > 1)
{
ObjectPool <State> .release(layer.states[layer.states.Count - 1]);
layer.states.RemoveAt(layer.states.Count - 1);
layer.currentState = layer.states[layer.states.Count - 1];
layer.clipStack.restore();
return;
}
this._layers.RemoveAt(this._layers.Count - 1);
var currentLayer = this._currentLayer = this._layers[this._layers.Count - 1];
var state = currentLayer.currentState;
var mesh = ImageMeshGenerator.imageMesh(state.matrix, uiRectHelper.one, layer.layerBounds);
if (!this._applyClip(mesh.bounds))
{
ObjectPool <uiMeshMesh> .release(mesh);
return;
}
var renderDraw = CanvasShader.texRT(currentLayer, layer.layerPaint.Value, mesh, layer);
currentLayer.draws.Add(renderDraw);
}
void _drawImageNine(Image image, uiRect?src, uiRect center, uiRect dst, uiPaint paint)
{
D.assert(image != null);
var scaleX = 1f / image.width;
var scaleY = 1f / image.height;
if (src == null)
{
src = uiRectHelper.one;
}
else
{
src = uiRectHelper.scale(src.Value, scaleX, scaleY);
}
center = uiRectHelper.scale(center, scaleX, scaleY);
var layer = this._currentLayer;
var state = layer.currentState;
var mesh = ImageMeshGenerator.imageNineMesh(state.matrix, src.Value, center, image.width, image.height,
dst);
if (!this._applyClip(mesh.bounds))
{
ObjectPool <uiMeshMesh> .release(mesh);
return;
}
layer.draws.Add(CanvasShader.tex(layer, paint, mesh, image));
}
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);
}
void _drawWithMaskFilter(Rect meshBounds, Action <Paint> drawAction, Paint paint, MaskFilter maskFilter)
{
var layer = this._currentLayer;
var clipBounds = layer.layerBounds;
Rect stackBounds;
bool iior;
layer.clipStack.getBounds(out stackBounds, out iior);
if (stackBounds != null)
{
clipBounds = clipBounds.intersect(stackBounds);
}
if (clipBounds.isEmpty)
{
return;
}
var state = layer.currentState;
float sigma = state.scale * maskFilter.sigma;
if (sigma <= 0)
{
return;
}
float sigma3 = 3 * sigma;
var maskBounds = meshBounds.inflate(sigma3);
maskBounds = maskBounds.intersect(clipBounds.inflate(sigma3));
if (maskBounds.isEmpty)
{
return;
}
var maskLayer = this._createMaskLayer(layer, maskBounds, drawAction, paint);
var blurLayer = this._createBlurLayer(maskLayer, sigma, layer);
var blurMesh = ImageMeshGenerator.imageMesh(null, Rect.one, maskBounds);
if (!this._applyClip(blurMesh.bounds))
{
return;
}
layer.draws.Add(CanvasShader.texRT(layer, paint, blurMesh, blurLayer));
}
void _drawPathDrawMeshCallback2(uiPaint p, uiMeshMesh mesh, bool convex, float alpha, Texture tex,
uiRect textBlobBounds, TextBlobMesh textMesh, bool notEmoji)
{
if (!this._applyClip(mesh.bounds))
{
ObjectPool <uiMeshMesh> .release(mesh);
return;
}
var layer = this._currentLayer;
layer.draws.Add(CanvasShader.stroke0(layer, p, alpha, mesh));
layer.draws.Add(CanvasShader.stroke1(layer, mesh.duplicate()));
}
public void flush(uiPicture picture)
{
if (!CanvasShader.isReady())
{
return;
}
this._reset();
this._resetRenderTextureId();
this._resetComputeBuffer();
this._drawUIPicture(picture, false);
D.assert(this._layers.Count == 1);
D.assert(this._layers[0].states.Count == 1);
var layer = this._currentLayer;
using (var cmdBuf = new CommandBuffer()) {
cmdBuf.name = "CommandBufferCanvas";
this._lastRtID = -1;
this._drawLayer(layer, cmdBuf);
// this is necessary for webgl2. not sure why... just to be safe to disable the scissor.
cmdBuf.DisableScissorRect();
this._bindComputeBuffer();
Graphics.ExecuteCommandBuffer(cmdBuf);
}
D.assert(this._layers.Count == 0 || (this._layers.Count == 1 && this._layers[0] == this._currentLayer));
if (this._currentLayer != null)
{
this._clearLayer(this._currentLayer);
ObjectPool <RenderLayer> .release(this._currentLayer);
this._currentLayer = null;
this._lastScissor = null;
this._layers.Clear();
}
AllocDebugger.onFrameEnd();
}
void _drawTextBlob(TextBlob textBlob, Offset offset, Paint paint)
{
D.assert(textBlob != null);
D.assert(offset != null);
D.assert(paint != null);
var state = this._currentLayer.currentState;
var scale = state.scale * this._devicePixelRatio;
var matrix = new Matrix3(state.matrix);
matrix.preTranslate(offset.dx, offset.dy);
var mesh = new TextBlobMesh(textBlob, scale, matrix);
// request font texture so text mesh could be generated correctly
var font = FontManager.instance.getOrCreate(textBlob.style.fontFamily).font;
var style = textBlob.style;
var fontSizeToLoad = Mathf.CeilToInt(style.UnityFontSize * scale);
var subText = textBlob.text.Substring(textBlob.textOffset, textBlob.textSize);
font.RequestCharactersInTexture(subText, fontSizeToLoad, style.UnityFontStyle);
var tex = font.material.mainTexture;
Action <Paint> drawMesh = (Paint p) => {
if (!this._applyClip(textBlob.bounds))
{
return;
}
var layer = this._currentLayer;
layer.draws.Add(CanvasShader.texAlpha(layer, p, mesh, tex));
};
if (paint.maskFilter != null && paint.maskFilter.sigma != 0)
{
this._drawWithMaskFilter(textBlob.bounds, drawMesh, paint, paint.maskFilter);
return;
}
drawMesh(paint);
}
void _drawTextBlob(TextBlob textBlob, Offset offset, Paint paint)
{
D.assert(textBlob != null);
D.assert(offset != null);
D.assert(paint != null);
var state = this._currentLayer.currentState;
var scale = state.scale * this._devicePixelRatio;
var matrix = new Matrix3(state.matrix);
matrix.preTranslate(offset.dx, offset.dy);
var mesh = MeshGenerator.generateMesh(textBlob, scale)?.transform(matrix);
if (mesh == null)
{
return;
}
var font = FontManager.instance.getOrCreate(textBlob.style.fontFamily).font;
var tex = font.material.mainTexture;
Action <Paint> drawMesh = (Paint p) => {
if (!this._applyClip(mesh.bounds))
{
return;
}
var layer = this._currentLayer;
layer.draws.Add(CanvasShader.texAlpha(layer, p, mesh, tex));
};
if (paint.maskFilter != null && paint.maskFilter.sigma != 0)
{
this._drawWithMaskFilter(mesh.bounds, drawMesh, paint, paint.maskFilter);
return;
}
drawMesh(paint);
}
void _drawPathDrawMeshCallback(uiPaint p, uiMeshMesh mesh, bool convex, float alpha, Texture tex,
uiRect textBlobBounds, TextBlobMesh textMesh, bool notEmoji)
{
if (!this._applyClip(mesh.bounds))
{
ObjectPool <uiMeshMesh> .release(mesh);
return;
}
var layer = this._currentLayer;
if (convex)
{
layer.draws.Add(CanvasShader.convexFill(layer, p, mesh));
}
else
{
layer.draws.Add(CanvasShader.fill0(layer, mesh));
layer.draws.Add(CanvasShader.fill1(layer, p, mesh.boundsMesh));
}
}
void _drawPath(Path path, Paint paint)
{
D.assert(path != null);
D.assert(paint != null);
if (paint.style == PaintingStyle.fill)
{
var state = this._currentLayer.currentState;
var cache = path.flatten(state.scale * this._devicePixelRatio);
bool convex;
var mesh = cache.getFillMesh(out convex).transform(state.matrix);
Action <Paint> drawMesh = p => {
if (!this._applyClip(mesh.bounds))
{
return;
}
var layer = this._currentLayer;
if (convex)
{
layer.draws.Add(CanvasShader.convexFill(layer, p, mesh));
}
else
{
layer.draws.Add(CanvasShader.fill0(layer, mesh));
layer.draws.Add(CanvasShader.fill1(layer, p, mesh.boundsMesh));
}
};
if (paint.maskFilter != null && paint.maskFilter.sigma != 0)
{
this._drawWithMaskFilter(mesh.bounds, drawMesh, paint, paint.maskFilter);
return;
}
drawMesh(paint);
}
else
{
var state = this._currentLayer.currentState;
float strokeWidth = (paint.strokeWidth * state.scale).clamp(0, 200.0f);
float alpha = 1.0f;
if (strokeWidth == 0)
{
strokeWidth = this._fringeWidth;
}
else if (strokeWidth < this._fringeWidth)
{
// If the stroke width is less than pixel size, use alpha to emulate coverage.
// Since coverage is area, scale by alpha*alpha.
alpha = (strokeWidth / this._fringeWidth).clamp(0.0f, 1.0f);
alpha *= alpha;
strokeWidth = this._fringeWidth;
}
var cache = path.flatten(state.scale * this._devicePixelRatio);
var mesh = cache.getStrokeMesh(
strokeWidth / state.scale * 0.5f,
paint.strokeCap,
paint.strokeJoin,
paint.strokeMiterLimit).transform(state.matrix);
Action <Paint> drawMesh = p => {
if (!this._applyClip(mesh.bounds))
{
return;
}
var layer = this._currentLayer;
layer.draws.Add(CanvasShader.stroke0(layer, p, alpha, mesh));
layer.draws.Add(CanvasShader.stroke1(layer, mesh));
};
if (paint.maskFilter != null && paint.maskFilter.sigma != 0)
{
this._drawWithMaskFilter(mesh.bounds, drawMesh, paint, paint.maskFilter);
return;
}
drawMesh(paint);
}
}
bool _applyClip(uiRect?queryBounds)
{
if (queryBounds == null || queryBounds.Value.isEmpty)
{
return(false);
}
var layer = this._currentLayer;
var layerBounds = layer.layerBounds;
ReducedClip reducedClip = ReducedClip.create(layer.clipStack, layerBounds, queryBounds.Value);
if (reducedClip.isEmpty())
{
ObjectPool <ReducedClip> .release(reducedClip);
return(false);
}
var scissor = reducedClip.scissor;
var physicalRect = uiRectHelper.fromLTRB(0, 0, layer.width, layer.height);
if (uiRectHelper.equals(scissor, layerBounds))
{
this._tryAddScissor(layer, null);
}
else
{
var deviceScissor = uiRectHelper.fromLTRB(
scissor.Value.left - layerBounds.left, layerBounds.bottom - scissor.Value.bottom,
scissor.Value.right - layerBounds.left, layerBounds.bottom - scissor.Value.top
);
deviceScissor = uiRectHelper.scale(deviceScissor, layer.width / layerBounds.width,
layer.height / layerBounds.height);
deviceScissor = uiRectHelper.roundOut(deviceScissor);
deviceScissor = uiRectHelper.intersect(deviceScissor, physicalRect);
if (deviceScissor.isEmpty)
{
ObjectPool <ReducedClip> .release(reducedClip);
return(false);
}
this._tryAddScissor(layer, deviceScissor);
}
var maskGenID = reducedClip.maskGenID();
if (this._mustRenderClip(maskGenID, reducedClip.scissor.Value))
{
if (maskGenID == ClipStack.wideOpenGenID)
{
layer.ignoreClip = true;
}
else
{
layer.ignoreClip = false;
// need to inflate a bit to make sure all area is cleared.
var inflatedScissor = uiRectHelper.inflate(reducedClip.scissor.Value, this._fringeWidth);
var boundsMesh = uiMeshMesh.create(inflatedScissor);
layer.draws.Add(CanvasShader.stencilClear(layer, boundsMesh));
foreach (var maskElement in reducedClip.maskElements)
{
layer.draws.Add(CanvasShader.stencil0(layer, maskElement.mesh.duplicate()));
layer.draws.Add(CanvasShader.stencil1(layer, boundsMesh.duplicate()));
}
}
this._setLastClipGenId(maskGenID, reducedClip.scissor.Value);
}
ObjectPool <ReducedClip> .release(reducedClip);
return(true);
}
bool _applyClip(Rect queryBounds)
{
var layer = this._currentLayer;
var layerBounds = layer.layerBounds;
ReducedClip reducedClip = new ReducedClip(layer.clipStack, layerBounds, queryBounds);
if (reducedClip.isEmpty())
{
return(false);
}
var scissor = reducedClip.scissor;
var physicalRect = Rect.fromLTRB(0, 0, layer.width, layer.height);
if (scissor == layerBounds)
{
this._tryAddScissor(layer, null);
}
else
{
var deviceScissor = Rect.fromLTRB(
scissor.left - layerBounds.left, layerBounds.bottom - scissor.bottom,
scissor.right - layerBounds.left, layerBounds.bottom - scissor.top
).scale(layer.width / layerBounds.width, layer.height / layerBounds.height);
deviceScissor = deviceScissor.roundOut();
deviceScissor = deviceScissor.intersect(physicalRect);
if (deviceScissor.isEmpty)
{
return(false);
}
this._tryAddScissor(layer, deviceScissor);
}
var maskGenID = reducedClip.maskGenID();
if (this._mustRenderClip(maskGenID, reducedClip.scissor))
{
if (maskGenID == ClipStack.wideOpenGenID)
{
layer.ignoreClip = true;
}
else
{
layer.ignoreClip = false;
var boundsMesh = new MeshMesh(reducedClip.scissor);
layer.draws.Add(CanvasShader.stencilClear(layer, boundsMesh));
foreach (var maskElement in reducedClip.maskElements)
{
layer.draws.Add(CanvasShader.stencil0(layer, maskElement.mesh));
layer.draws.Add(CanvasShader.stencil1(layer, boundsMesh));
}
}
this._setLastClipGenId(maskGenID, reducedClip.scissor);
}
return(true);
}
void _saveLayer(uiRect bounds, uiPaint paint)
{
D.assert(bounds.width > 0);
D.assert(bounds.height > 0);
var parentLayer = this._currentLayer;
var state = parentLayer.currentState;
var textureWidth = Mathf.CeilToInt(
bounds.width * state.scale * this._devicePixelRatio);
if (textureWidth < 1)
{
textureWidth = 1;
}
var textureHeight = Mathf.CeilToInt(
bounds.height * state.scale * this._devicePixelRatio);
if (textureHeight < 1)
{
textureHeight = 1;
}
var layer = RenderLayer.create(
rtID: Shader.PropertyToID(this._getNewRenderTextureKey()),
width: textureWidth,
height: textureHeight,
layerBounds: bounds,
layerPaint: paint
);
parentLayer.addLayer(layer);
this._layers.Add(layer);
this._currentLayer = layer;
if (paint.backdrop != null)
{
if (paint.backdrop is _uiBlurImageFilter)
{
var filter = (_uiBlurImageFilter)paint.backdrop;
if (!(filter.sigmaX == 0 && filter.sigmaY == 0))
{
_cachedPoints[0] = bounds.topLeft;
_cachedPoints[1] = bounds.bottomLeft;
_cachedPoints[2] = bounds.bottomRight;
_cachedPoints[3] = bounds.topRight;
state.matrix.Value.mapPoints(ref _cachedPoints);
var parentBounds = parentLayer.layerBounds;
for (int i = 0; i < 4; i++)
{
_cachedPoints[i] = new uiOffset(
(_cachedPoints[i].dx - parentBounds.left) / parentBounds.width,
(_cachedPoints[i].dy - parentBounds.top) / parentBounds.height
);
}
var mesh = ImageMeshGenerator.imageMesh(
null,
_cachedPoints[0],
_cachedPoints[1],
_cachedPoints[2],
_cachedPoints[3],
bounds);
var renderDraw = CanvasShader.texRT(layer, layer.layerPaint.Value, mesh, parentLayer);
layer.draws.Add(renderDraw);
var blurLayer = this._createBlurLayer(layer, filter.sigmaX, filter.sigmaY, layer);
var blurMesh = ImageMeshGenerator.imageMesh(null, uiRectHelper.one, bounds);
layer.draws.Add(CanvasShader.texRT(layer, paint, blurMesh, blurLayer));
}
}
else if (paint.backdrop is _uiMatrixImageFilter)
{
var filter = (_uiMatrixImageFilter)paint.backdrop;
if (!filter.transform.isIdentity())
{
layer.filterMode = filter.filterMode;
_cachedPoints[0] = bounds.topLeft;
_cachedPoints[1] = bounds.bottomLeft;
_cachedPoints[2] = bounds.bottomRight;
_cachedPoints[3] = bounds.topRight;
state.matrix.Value.mapPoints(ref _cachedPoints);
var parentBounds = parentLayer.layerBounds;
for (int i = 0; i < 4; i++)
{
_cachedPoints[i] = new uiOffset(
(_cachedPoints[i].dx - parentBounds.left) / parentBounds.width,
(_cachedPoints[i].dy - parentBounds.top) / parentBounds.height
);
}
var matrix = uiMatrix3.makeTrans(-bounds.left, -bounds.top);
matrix.postConcat(filter.transform);
matrix.postTranslate(bounds.left, bounds.top);
var mesh = ImageMeshGenerator.imageMesh(
matrix,
_cachedPoints[0],
_cachedPoints[1],
_cachedPoints[2],
_cachedPoints[3],
bounds);
var renderDraw = CanvasShader.texRT(layer, layer.layerPaint.Value, mesh, parentLayer);
layer.draws.Add(renderDraw);
}
}
}
}
void _drawRRectShadow(uiPath path, uiPaint paint)
{
D.assert(path.isNaiveRRect, () => "Cannot draw fast Shadow for non-NaiveRRect shapes");
D.assert(paint.style == PaintingStyle.fill, () => "Cannot draw fast Shadow for stroke lines");
var layer = this._currentLayer;
var state = layer.currentState;
var cache = path.flatten(state.scale * this._devicePixelRatio);
bool convex;
cache.computeFillMesh(this._fringeWidth, out convex);
var fillMesh = cache.fillMesh;
var meshBounds = fillMesh.transform(state.matrix);
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)
{
ObjectPool <uiMeshMesh> .release(meshBounds);
return;
}
var maskBounds = meshBounds.bounds;
maskBounds = uiRectHelper.intersect(maskBounds, clipBounds);
if (maskBounds.isEmpty)
{
ObjectPool <uiMeshMesh> .release(meshBounds);
return;
}
var blurMesh = ImageMeshGenerator.imageMesh(null, uiRectHelper.one, maskBounds);
if (!this._applyClip(blurMesh.bounds))
{
ObjectPool <uiMeshMesh> .release(meshBounds);
ObjectPool <uiMeshMesh> .release(blurMesh);
return;
}
var bound = path.getBounds();
var sigma = state.scale * paint.maskFilter.Value.sigma / 3f;
var vertices = ObjectPool <uiList <Vector3> > .alloc();
vertices.SetCapacity(4);
vertices.Add(new Vector2(0, 0));
vertices.Add(new Vector2(1, 0));
vertices.Add(new Vector2(0, 1));
vertices.Add(new Vector2(1, 1));
var _triangles = ObjectPool <uiList <int> > .alloc();
_triangles.SetCapacity(6);
_triangles.Add(0);
_triangles.Add(1);
_triangles.Add(2);
_triangles.Add(2);
_triangles.Add(1);
_triangles.Add(3);
ObjectPool <uiMeshMesh> .release(meshBounds);
ObjectPool <uiMeshMesh> .release(blurMesh);
var mesh = uiMeshMesh.create(state.matrix, vertices, _triangles);
var shadowColor = paint.color.withAlpha(128);
layer.draws.Add(CanvasShader.fastShadow(layer, mesh, sigma, path.isRect, path.isCircle, path.rRectCorner, new Vector4(bound.left, bound.top, bound.right, bound.bottom), shadowColor));
}
