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internal/graphicsdriver/metal: improve an error message for Metal initialization

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Updates #2732
This commit is contained in:
Hajime Hoshi 2023-08-26 12:43:16 +09:00
parent 4116fd3eb4
commit 592d6c57b7
1 changed files with 10 additions and 5 deletions
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15
internal/graphicsdriver/metal/graphics_darwin.go
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@ -75,14 +75,19 @@ const (
noStencil
)
var systemDefaultDevice mtl.Device
var (
systemDefaultDevice mtl.Device
systemDefaultDeviceErr error
)
func init() {
// mtl.CreateSystemDefaultDevice must be called on the main thread (#2147).
d, err := mtl.CreateSystemDefaultDevice()
if err == nil {
systemDefaultDevice = d
if err != nil {
systemDefaultDeviceErr = err
return
}
systemDefaultDevice = d
}
// NewGraphics creates an implementation of graphicsdriver.Graphics for Metal.
@ -91,8 +96,8 @@ func NewGraphics() (graphicsdriver.Graphics, error) {
// On old mac devices like iMac 2011, Metal is not supported (#779).
// TODO: Is there a better way to check whether Metal is available or not?
// It seems OK to call MTLCreateSystemDefaultDevice multiple times, so this should be fine.
if systemDefaultDevice == (mtl.Device{}) {
return nil, fmt.Errorf("metal: mtl.CreateSystemDefaultDevice failed")
if systemDefaultDeviceErr != nil {
return nil, fmt.Errorf("metal: mtl.CreateSystemDefaultDevice failed: %w", systemDefaultDeviceErr)
}
g := &Graphics{}