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https://github.com/obsproject/obs-studio.git
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66 lines
2.4 KiB
Swift
66 lines
2.4 KiB
Swift
/******************************************************************************
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Copyright (C) 2024 by Patrick Heyer <PatTheMav@users.noreply.github.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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******************************************************************************/
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import Foundation
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import Metal
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class MetalStageBuffer {
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let device: MetalDevice
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let buffer: MTLBuffer
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let format: MTLPixelFormat
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let width: Int
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let height: Int
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init?(device: MetalDevice, width: Int, height: Int, format: MTLPixelFormat) {
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self.device = device
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self.width = width
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self.height = height
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self.format = format
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guard let bytesPerPixel = format.bytesPerPixel,
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let buffer = device.device.makeBuffer(
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length: width * height * bytesPerPixel,
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options: .storageModeShared
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)
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else {
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return nil
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}
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self.buffer = buffer
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}
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/// Gets an opaque pointer for the ``MetalStageBuffer`` instance and increases its reference count by one
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/// - Returns: `OpaquePointer` to class instance
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///
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/// > Note: Use this method when the instance is to be shared via an `OpaquePointer` and needs to be retained. Any
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/// opaque pointer shared this way needs to be converted into a retained reference again to ensure automatic
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/// deinitialization by the Swift runtime.
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func getRetained() -> OpaquePointer {
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let retained = Unmanaged.passRetained(self).toOpaque()
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return OpaquePointer(retained)
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}
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/// Gets an opaque pointer for the ``MetalStageBuffer`` instance without increasing its reference count
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/// - Returns: `OpaquePointer` to class instance
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func getUnretained() -> OpaquePointer {
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let unretained = Unmanaged.passUnretained(self).toOpaque()
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return OpaquePointer(unretained)
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}
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}
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