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graphicsdriver/metal: Bug fix: avoid using mtl.LoadActionDontCare

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Fixes #1019
This commit is contained in:
Hajime Hoshi 2020-02-11 20:28:15 +09:00
parent 38d8cbf6af
commit 9298b044e3
1 changed files with 5 additions and 7 deletions
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12
internal/graphicsdriver/metal/driver.go
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@ -587,13 +587,11 @@ func (d *Driver) Draw(indexLen int, indexOffset int, mode driver.CompositeMode,
d.view.update()
rpd := mtl.RenderPassDescriptor{}
if d.dst.screen {
rpd.ColorAttachments[0].LoadAction = mtl.LoadActionDontCare
rpd.ColorAttachments[0].StoreAction = mtl.StoreActionStore
} else {
rpd.ColorAttachments[0].LoadAction = mtl.LoadActionLoad
rpd.ColorAttachments[0].StoreAction = mtl.StoreActionStore
}
// Even though the destination pixels are not used, mtl.LoadActionDontCare might cause glitches
// (#1019). Always using mtl.LoadActionLoad is safe.
rpd.ColorAttachments[0].LoadAction = mtl.LoadActionLoad
rpd.ColorAttachments[0].StoreAction = mtl.StoreActionStore
var t mtl.Texture
if d.dst.screen {
if d.screenDrawable == (ca.MetalDrawable{}) {