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fix: use windows nominal resolution for better performance

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Louis Pontoise authored and lwouis committed 2020-04-30 01:36:38 +09:00
1 parent ad8d870364
commit a7cc3bed0c
2 files changed
+5 -4
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src/api-wrappers/CGWindowID.swift
+1 -2
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@@ -18,8 +18,7 @@ extension CGWindowID {
func screenshot() -> CGImage? {
// CGSHWCaptureWindowList
var windowId_ = self
let options: CGSWindowCaptureOptions = [.captureIgnoreGlobalClipShape, .windowCaptureNominalResolution]
let list = CGSHWCaptureWindowList(cgsMainConnectionId, &windowId_, 1, options).takeRetainedValue() as! [CGImage]
let list = CGSHWCaptureWindowList(cgsMainConnectionId, &windowId_, 1, [.ignoreGlobalClipShape, .nominalResolution]).takeRetainedValue() as! [CGImage]
return list.first
// // CGWindowListCreateImage
src/api-wrappers/PrivateApis.swift
+4 -2
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@@ -13,8 +13,10 @@ typealias CGSSpaceID = UInt64
struct CGSWindowCaptureOptions: OptionSet {
let rawValue: UInt32
static let windowCaptureNominalResolution = CGSWindowCaptureOptions(rawValue: 1 << 0x0200)
static let captureIgnoreGlobalClipShape = CGSWindowCaptureOptions(rawValue: 1 << 0x0800)
static let ignoreGlobalClipShape = CGSWindowCaptureOptions(rawValue: 1 << 11)
// on a retina display, 1px is spread on 4px, so nominalResolution is 1/4 of bestResolution
static let nominalResolution = CGSWindowCaptureOptions(rawValue: 1 << 9)
static let bestResolution = CGSWindowCaptureOptions(rawValue: 1 << 8)
}
enum SLPSMode: UInt32 {