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uidriver/glfw: Refactoring

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This commit is contained in:
Hajime Hoshi 2020-01-13 18:23:18 +09:00
parent c1adf60e69
commit e797aed6c9
1 changed files with 22 additions and 27 deletions
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49
internal/uidriver/glfw/graphics_darwin.go
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@ -29,40 +29,35 @@ package glfw
import "C" import "C"
import ( import (
"sync"
"github.com/hajimehoshi/ebiten/internal/driver" "github.com/hajimehoshi/ebiten/internal/driver"
"github.com/hajimehoshi/ebiten/internal/graphicsdriver/metal" "github.com/hajimehoshi/ebiten/internal/graphicsdriver/metal"
"github.com/hajimehoshi/ebiten/internal/graphicsdriver/metal/mtl" "github.com/hajimehoshi/ebiten/internal/graphicsdriver/metal/mtl"
"github.com/hajimehoshi/ebiten/internal/graphicsdriver/opengl" "github.com/hajimehoshi/ebiten/internal/graphicsdriver/opengl"
) )
var ( var graphics driver.Graphics
// isMetalSupported represents whether Metal is supported.
isMetalSupported = true
// isMetalSupportedOnce initializes isMetalSupported. func supportsMetal() bool {
// // On old mac devices like iMac 2011, Metal is not supported (#779).
// Use sync.Once instead of init function to avoid init-order dependency (#886). if _, err := mtl.CreateSystemDefaultDevice(); err != nil {
isMetalSupportedOnce sync.Once return 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.getMacOSMinorVersion() <= 11 {
return false
}
return true
}
func init() {
if supportsMetal() {
graphics = metal.Get()
return
}
graphics = opengl.Get()
}
func (*UserInterface) Graphics() driver.Graphics { func (*UserInterface) Graphics() driver.Graphics {
isMetalSupportedOnce.Do(func() { return graphics
// On old mac devices like iMac 2011, Metal is not supported (#779).
if _, err := mtl.CreateSystemDefaultDevice(); err != nil {
isMetalSupported = false
return
}
// 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.getMacOSMinorVersion() <= 11 {
isMetalSupported = false
return
}
})
if isMetalSupported {
return metal.Get()
}
return opengl.Get()
} }