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optimize: performance of desktop viewer on Windows
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XZB-1248
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Sep 20, 2022
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,26 @@ | ||
| //go:build !windows | ||
| // +build !windows | ||
|
|
||
| package desktop | ||
|
|
||
| import ( | ||
| "github.com/kbinani/screenshot" | ||
| "image" | ||
| ) | ||
|
|
||
| type screen struct { | ||
| displayIndex int | ||
| } | ||
|
|
||
| func (s *screen) init(displayIndex int) { | ||
| s.displayIndex = displayIndex | ||
| } | ||
|
|
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| func (s *screen) capture(img *image.RGBA, _ image.Rectangle) error { | ||
| var err error | ||
| img, err = screenshot.CaptureDisplay(displayIndex) | ||
| return err | ||
| } | ||
|
|
||
| func (s *screen) release() { | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| //go:build windows | ||
| // +build windows | ||
|
|
||
| package desktop | ||
|
|
||
| import ( | ||
| "github.com/kirides/screencapture/d3d" | ||
| "github.com/kirides/screencapture/screenshot" | ||
| "github.com/kirides/screencapture/win" | ||
| "image" | ||
| ) | ||
|
|
||
| type screen struct { | ||
| dxgi bool | ||
| ddup *d3d.OutputDuplicator | ||
| device *d3d.ID3D11Device | ||
| deviceCtx *d3d.ID3D11DeviceContext | ||
| displayIndex int | ||
| } | ||
|
|
||
| func (s *screen) init(displayIndex int) { | ||
| var err error | ||
| s.displayIndex = displayIndex | ||
| s.dxgi = false | ||
| return | ||
| if win.IsValidDpiAwarenessContext(win.DpiAwarenessContextPerMonitorAwareV2) { | ||
| _, err = win.SetThreadDpiAwarenessContext(win.DpiAwarenessContextPerMonitorAwareV2) | ||
| s.dxgi = err == nil | ||
| } | ||
| if s.dxgi { | ||
| s.device, s.deviceCtx, err = d3d.NewD3D11Device() | ||
| s.ddup, err = d3d.NewIDXGIOutputDuplication(s.device, s.deviceCtx, uint(displayIndex)) | ||
| if err != nil { | ||
| s.dxgi = false | ||
| s.device.Release() | ||
| s.deviceCtx.Release() | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func (s *screen) capture(img *image.RGBA, bounds image.Rectangle) error { | ||
| var err error | ||
| if s.dxgi { | ||
| err = s.ddup.GetImage(img, 100) | ||
| if err != nil { | ||
| if err == d3d.ErrNoImageYet { | ||
| return ErrNoImage | ||
| } | ||
| return err | ||
| } | ||
| return nil | ||
| } | ||
| return screenshot.CaptureImg(img, 0, 0, bounds.Dx(), bounds.Dy()) | ||
| } | ||
|
|
||
| func (s *screen) release() { | ||
| if s.ddup != nil { | ||
| s.ddup.Release() | ||
| } | ||
| if s.device != nil { | ||
| s.device.Release() | ||
| } | ||
| if s.deviceCtx != nil { | ||
| s.deviceCtx.Release() | ||
| } | ||
| } |
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