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jPCT-AE - a 3d engine for Android => Support => Topic started by: MichaelJPCT on August 27, 2023, 09:04:18 am

Title: blitting - rotated ? subtractive ?
Post by: MichaelJPCT on August 27, 2023, 09:04:18 am

i wish blitting can be 90 degree rotated and can be subtractive in color.
rotated blitting can be used to mimic the rotation of screen without setting it from Android , and without using different textures.
subtractive color is easier to achieve dark text on light color background, without using different textures. ( i currently use textures with white text on black background and no alpha, additive makes the text look good on dark background)
are these possible?

Title: Re: blitting - rotated ? subtractive ?
Post by: AeroShark333 on August 28, 2023, 09:43:39 pm

I think both are achievable using some workarounds.
The 90° rotated texture could be done using 3 ways:
1st: load the texture's bitmap 90° rotated
2nd: use Overlay to rotate the texture layer
3rd: use a blitting shader to draw your texture 90° rotated

For the subtractive color, I believe you'd need to use a blitting shader too

I'm not sure if a RenderTexture is needed for a blitting shader to work