public static void ResetCommands(RenderChain renderChain, VisualElement ve)
{
if (ve.renderChainData.firstCommand != null)
{
renderChain.OnRenderCommandsRemoved(ve.renderChainData.firstCommand, ve.renderChainData.lastCommand);
}
var prev = ve.renderChainData.firstCommand != null ? ve.renderChainData.firstCommand.prev : null;
var next = ve.renderChainData.lastCommand != null ? ve.renderChainData.lastCommand.next : null;
Debug.Assert(prev == null || prev.owner != ve);
Debug.Assert(next == null || next == ve.renderChainData.firstClosingCommand || next.owner != ve);
if (prev != null)
{
prev.next = next;
}
if (next != null)
{
next.prev = prev;
}
if (ve.renderChainData.firstCommand != null)
{
var c = ve.renderChainData.firstCommand;
while (c != ve.renderChainData.lastCommand)
{
var nextC = c.next;
renderChain.FreeCommand(c);
c = nextC;
}
renderChain.FreeCommand(c); // Last command
}
ve.renderChainData.firstCommand = ve.renderChainData.lastCommand = null;
prev = ve.renderChainData.firstClosingCommand != null ? ve.renderChainData.firstClosingCommand.prev : null;
next = ve.renderChainData.lastClosingCommand != null ? ve.renderChainData.lastClosingCommand.next : null;
Debug.Assert(prev == null || prev.owner != ve);
Debug.Assert(next == null || next.owner != ve);
if (prev != null)
{
prev.next = next;
}
if (next != null)
{
next.prev = prev;
}
if (ve.renderChainData.firstClosingCommand != null)
{
renderChain.OnRenderCommandsRemoved(ve.renderChainData.firstClosingCommand, ve.renderChainData.lastClosingCommand);
var c = ve.renderChainData.firstClosingCommand;
while (c != ve.renderChainData.lastClosingCommand)
{
var nextC = c.next;
renderChain.FreeCommand(c);
c = nextC;
}
renderChain.FreeCommand(c); // Last closing command
}
ve.renderChainData.firstClosingCommand = ve.renderChainData.lastClosingCommand = null;
}
