[Impeller] Improve scaling of very large images #128885
Description
Steps:
- Find a very high resolution image that exceeds the max limits of a texture size, for example https://github.com/zesage/panorama/blob/master/example/assets/panorama.jpg
- Try to load that image (with or without actually rendering it) on an Impeller enabled app.
[VERBOSE-2:validation.cc(49)] Break on 'ImpellerValidationBreak' to inspect point of failure: Requested texture size (20266, 10134) exceeds maximum supported size of (16384, 16384)
[VERBOSE-2:validation.cc(49)] Break on 'ImpellerValidationBreak' to inspect point of failure: Could not create multisample color texture.
One option would be to always downscale to at least the max texture size, even if the user did not request downscaling of the image.
It may be worth creating some kind of package that automatically breaks up super large images into tiles for users who really want/need to render very high resolution images at scale.