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graphicsdriver/metal: Optimization
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parent
2bc1475a15
commit
00e8b701c1
@ -868,15 +868,31 @@ func (i *Image) Pixels() ([]byte, error) {
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return b, nil
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return b, nil
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}
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}
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// needsToSyncBeforeReplaceRegion reports whether syncTexture is needed before calling ReplaceRegion.
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//
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// Before a part region is updated, the texture data needs to be loaded to CPU. Otherwise, the remaining region will
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// be uninitialized (#1213).
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func (i *Image) needsToSyncBeforeReplaceRegion(args []*driver.ReplacePixelsArgs) bool {
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if len(args) == 0 {
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return false
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}
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if len(args) > 1 {
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return true
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}
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if a := args[0]; a.X == 0 && a.Y == 0 && a.Width == i.width && a.Height == i.height {
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return false
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}
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return true
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}
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func (i *Image) ReplacePixels(args []*driver.ReplacePixelsArgs) {
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func (i *Image) ReplacePixels(args []*driver.ReplacePixelsArgs) {
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g := i.graphics
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g := i.graphics
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if g.drawCalled {
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if g.drawCalled {
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g.flush(true, false)
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g.flush(true, false)
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g.drawCalled = false
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g.drawCalled = false
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if i.needsToSyncBeforeReplaceRegion(args) {
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// When mtl.TextureUsageRenderTarget is specified, synchronizing the texture memory before replacing
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i.syncTexture()
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// a region seems necessary (#1213).
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}
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i.syncTexture()
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}
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}
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g.t.Call(func() error {
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g.t.Call(func() error {
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