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graphicscommand: Use GL on macOS 10.11 or older (#781)

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This commit is contained in:
Hajime Hoshi 2019-01-12 01:29:20 +09:00
parent 72c1a73cac
commit dc0c6e0907
1 changed files with 24 additions and 4 deletions
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28
internal/graphicscommand/driver_mac.go
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@ -17,6 +17,17 @@
package graphicscommand
// #cgo CFLAGS: -x objective-c
// #cgo LDFLAGS: -framework Foundation
//
// #import <Foundation/Foundation.h>
//
// static int getDarwinMinorVersion() {
// NSOperatingSystemVersion version = [[NSProcessInfo processInfo] operatingSystemVersion];
// return (int)version.minorVersion;
// }
import "C"
import (
"github.com/hajimehoshi/ebiten/internal/graphicsdriver"
"github.com/hajimehoshi/ebiten/internal/graphicsdriver/metal"
@ -24,19 +35,28 @@ import (
"github.com/hajimehoshi/ebiten/internal/graphicsdriver/opengl"
)
// isMetalSupported represents whether Metal is supported.
var isMetalSupported = true
var (
// isMetalSupported represents whether Metal is supported.
isMetalSupported = true
darwinMajorVersion = 0
)
func init() {
// On old mac devices like iMac 2011, Metal is not supported (#779).
if _, err := mtl.CreateSystemDefaultDevice(); err != nil {
isMetalSupported = false
}
// On macOS 10.11 El Capitan, there is a rendering issue on Metal (#781).
// Use the OpenGL in macOS 10.11 or older.
if C.getDarwinMinorVersion() <= 11 {
isMetalSupported = false
}
}
func Driver() graphicsdriver.GraphicsDriver {
if isMetalSupported {
return metal.Get()
} else {
return opengl.Get()
}
return opengl.Get()
}