mpv/video/out/mac/metal_layer.swift

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/*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* mpv is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
import Cocoa
import QuartzCore
class MetalLayer: CAMetalLayer {
unowned var common: MacCommon
// workaround for a MoltenVK workaround that sets the drawableSize to 1x1 to forcefully complete
// the presentation, this causes flicker and the drawableSize possibly staying at 1x1
override var drawableSize: CGSize {
get { return super.drawableSize }
set {
if Int(newValue.width) > 1 && Int(newValue.height) > 1 {
super.drawableSize = newValue
}
}
}
init(common com: MacCommon) {
common = com
super.init()
pixelFormat = .rgba16Float
backgroundColor = NSColor.black.cgColor
}
// necessary for when the layer containing window changes the screen
override init(layer: Any) {
guard let oldLayer = layer as? MetalLayer else {
fatalError("init(layer: Any) passed an invalid layer")
}
common = oldLayer.common
super.init()
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}