public void flush(uiPicture picture)
{
this._reset();
this._resetRenderTextureId();
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();
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();
}
}
void _drawUIPicture(uiPicture picture, bool needsSave = true)
{
if (needsSave)
{
this._save();
}
int saveCount = 0;
var drawCmds = picture.drawCmds;
foreach (var drawCmd in drawCmds)
{
switch (drawCmd)
{
case uiDrawSave _:
saveCount++;
this._save();
break;
case uiDrawSaveLayer cmd: {
saveCount++;
this._saveLayer(cmd.rect.Value, cmd.paint);
break;
}
case uiDrawRestore _: {
saveCount--;
if (saveCount < 0)
{
throw new Exception("unmatched save/restore in picture");
}
this._restore();
break;
}
case uiDrawTranslate cmd: {
this._translate(cmd.dx, cmd.dy);
break;
}
case uiDrawScale cmd: {
this._scale(cmd.sx, cmd.sy);
break;
}
case uiDrawRotate cmd: {
this._rotate(cmd.radians, cmd.offset);
break;
}
case uiDrawSkew cmd: {
this._skew(cmd.sx, cmd.sy);
break;
}
case uiDrawConcat cmd: {
this._concat(cmd.matrix.Value);
break;
}
case uiDrawResetMatrix _:
this._resetMatrix();
break;
case uiDrawSetMatrix cmd: {
this._setMatrix(cmd.matrix.Value);
break;
}
case uiDrawClipRect cmd: {
this._clipUIRect(cmd.rect.Value);
break;
}
case uiDrawClipRRect cmd: {
this._clipRRect(cmd.rrect);
break;
}
case uiDrawClipPath cmd: {
this._clipPath(cmd.path);
break;
}
case uiDrawPath cmd: {
this._drawPath(cmd.path, cmd.paint);
break;
}
case uiDrawImage cmd: {
this._drawImage(cmd.image, cmd.offset.Value, cmd.paint);
break;
}
case uiDrawImageRect cmd: {
this._drawImageRect(cmd.image, cmd.src, cmd.dst.Value, cmd.paint);
break;
}
case uiDrawImageNine cmd: {
this._drawImageNine(cmd.image, cmd.src, cmd.center.Value, cmd.dst.Value, cmd.paint);
break;
}
case uiDrawPicture cmd: {
this._drawPicture(cmd.picture);
break;
}
case uiDrawTextBlob cmd: {
this._drawTextBlob(cmd.textBlob, cmd.offset.Value, cmd.paint);
break;
}
default:
throw new Exception("unknown drawCmd: " + drawCmd);
}
}
if (saveCount != 0)
{
throw new Exception("unmatched save/restore in picture");
}
if (needsSave)
{
this._restore();
}
}