NeoChrom/GPU2D registers documentation

[robvos]

Will this peripheral ever be documented in detail? i.e. registers, interrupts, etc.

Or even a lightweight/low level library would be acceptable.

We may choose STM32U5 for a product but not if we are forced to use TouchGFX for good performance.

[Jack3]

I know how to correctly draw rotated bitmaps with GPU2D, and RGBA8888 bitmaps with alpha transparency, as in the image below.

If the bitmap does not have alpha transparency, we still can draw it with alpha transparency with DMA2D, but of course DMA2D cannot rotate it to an arbitrary angle.
Bitmaps can be rotated to any angle by GPU2D.
If those images already have alpha transparency, it will be shown that way.

But can GPU2D draw any bitmap, even those without alpha transparency, with any programmed arbitrary alpha transparency?

What nema functions can be used for this?

Thank you very much in advance for any help.