cocoa-cb: add support for 10bit opengl rendering

this will request a 16bit half-float framebuffer instead if a 8bit
integer framebuffer.

Fixes #3613

1 files changed, 14 insertions, 0 deletions

diff --git a/osdep/macOS_swift_compat.swift b/osdep/macOS_swift_compat.swift
index 381398e1bf..c14aa08282 100644
--- a/osdep/macOS_swift_compat.swift
+++ b/osdep/macOS_swift_compat.swift
@@ -23,6 +23,13 @@ extension NSAppearance.Name {
     static let accessibilityHighContrastVibrantLight: NSAppearance.Name = NSAppearance.Name(rawValue: "NSAppearanceNameAccessibilityVibrantLight")
     static let accessibilityHighContrastVibrantDark: NSAppearance.Name = NSAppearance.Name(rawValue: "NSAppearanceNameAccessibilityVibrantDark")
 }
+
+@available(OSX 10.12, *)
+extension String {
+    static let RGBA16Float: String = kCAContentsFormatRGBA16Float
+    static let RGBA8Uint: String = kCAContentsFormatRGBA8Uint
+    static let gray8Uint: String = kCAContentsFormatGray8Uint
+}
 #endif
 
 extension NSPasteboard.PasteboardType {
@@ -73,6 +80,13 @@ extension Array {
     }
 }
 
+extension Array where Element == [CGLPixelFormatAttribute] {
+
+    func contains(_ obj: [CGLPixelFormatAttribute]) -> Bool {
+        return self.contains(where:{ $0 == obj })
+    }
+}
+
 extension NSWindow.Level {
 
     static func +(left: NSWindow.Level, right: Int) -> NSWindow.Level {