ebiten: take performance profile to consider adding DrawImageOptions.DstRegion and/or DrawImageOptions.SrcRegions #3184
Description
Operating System
- Windows
- macOS
- Linux
- FreeBSD
- OpenBSD
- Android
- iOS
- Nintendo Switch
- PlayStation 5
- Xbox
- Web Browsers
What feature would you like to be added?
See also #2945
We know that (*ebiten.Image).SubImage has some performance penalty: this returns an interface type image.Image and always allocates a heap object. If we change this to return an *ebiten.Image directly, the situation might change. However, even if this returned *ebiten.Image, this still might have a performance penalty as this still creates a new object. What about adding options to specify regions for a source and a destination image when redering an image? Before we introduce this, we need to take performance profile.
This issue is just for taking a profile. If we decide to make new APIs, let's file another issue.
Why is this needed?
To mitigate performance penalty of SubImage.