Can I use Metal to modify a RAW photo image, and then save it to file?

Question

Created Mar ’21

Replies 2

Boosts 0

Views 1.2k

Participants 2

I got a RAW Image CGImage from file, its pixel format is <CV14BayerRggb 1919379252>

then, convert it to MTLTexture <RGBA16Uint>

then, modify some pixel color and write to another MTLTexture <RGBA16Uint>

then, I want to create a CIImage from output texture,

there raised a error told me create CIImage failed, unsupported texutre format.

Boost

Answer 1

Graphics and Games Engineer OP

Apple

Mar ’21

Accepted Answer

I assume you're getting an error when you call -[CImage imageWithMTLTexture:options:]?

CIImage only supports some basic texture formats and MTLTextureFormatRGBA16Uint isn't one of them. Why have you chosen that format in particular? Can you use RGBA32Float or RGBA16Float instead?

1

Answer 2

PhonJac OP

Mar ’21

You are right, thank you

0