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internal/graphicsdriver/metal: Add a comment

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Hajime Hoshi 2021-02-27 04:03:59 +09:00
parent 53352cf2b3
commit 77b198211c
1 changed files with 2 additions and 1 deletions
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3
internal/graphicsdriver/metal/graphics.go
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@ -901,7 +901,8 @@ func (i *Image) ReplacePixels(args []*driver.ReplacePixelsArgs) {
h := maxY - minY h := maxY - minY
// Use a temporary texture to send pixels asynchrounsly, whichever the memory is shared (e.g., iOS) or // Use a temporary texture to send pixels asynchrounsly, whichever the memory is shared (e.g., iOS) or
// managed (e.g., macOS). (#1418) // managed (e.g., macOS). A temporary texture is needed since ReplaceRegion tries to sync the pixel
// data between CPU and GPU, and doing it on the existing texture is inefficient (#1418).
// The texture cannot be reused until sending the pixels finishes, then create new ones for each call. // The texture cannot be reused until sending the pixels finishes, then create new ones for each call.
td := mtl.TextureDescriptor{ td := mtl.TextureDescriptor{
TextureType: mtl.TextureType2D, TextureType: mtl.TextureType2D,