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graphicsdriver/metal: Set and reset screenDrawable more correctly

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This commit is contained in:
Hajime Hoshi 2019-04-20 15:47:27 +09:00
parent a064955a13
commit 72be1bde24
1 changed files with 13 additions and 11 deletions
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22
internal/graphicsdriver/metal/driver.go
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@ -312,16 +312,25 @@ func Get() *Driver {
}
func (d *Driver) Begin() {
mainthread.Run(func() error {
// NSAutoreleasePool is required to release drawable correctly (#847).
// https://developer.apple.com/library/archive/documentation/3DDrawing/Conceptual/MTLBestPracticesGuide/Drawables.html
mainthread.Run(func() error {
d.pool = C.allocAutoreleasePool()
drawable, err := d.ml.NextDrawable()
if err != nil {
// Drawable is nil. This can happen at the initial state. Let's wait and see.
return nil
}
d.screenDrawable = drawable
return nil
})
}
func (d *Driver) End() {
mainthread.Run(func() error {
d.screenDrawable = ca.MetalDrawable{}
C.releaseAutoreleasePool(d.pool)
d.pool = nil
return nil
@ -361,6 +370,8 @@ func (d *Driver) flush(wait bool) {
return nil
}
// TODO: Calling PresentDrawable here is odd since flush is not related to preseinging.
// Call it at End().
if d.screenDrawable != (ca.MetalDrawable{}) {
d.cb.PresentDrawable(d.screenDrawable)
}
@ -370,7 +381,6 @@ func (d *Driver) flush(wait bool) {
}
d.cb = mtl.CommandBuffer{}
d.screenDrawable = ca.MetalDrawable{}
return nil
})
@ -622,16 +632,8 @@ func (d *Driver) Draw(indexLen int, indexOffset int, mode graphics.CompositeMode
}
var t mtl.Texture
if d.dst.screen {
if d.screenDrawable == (ca.MetalDrawable{}) {
drawable, err := d.ml.NextDrawable()
if err != nil {
return err
}
d.screenDrawable = drawable
}
t = d.screenDrawable.Texture()
} else {
d.screenDrawable = ca.MetalDrawable{}
t = d.dst.texture
}
rpd.ColorAttachments[0].Texture = t