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parroteye

Read values after map on a R16G16B16A16_FLOAT

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   Hi!

 

This is probably a stupid questions, but I try to read back a staging texture on cpu, the format is 16bit float, however to my limited knowledge there is no standard 16bit float in C++, how can I read the values in a meaningful way? 

The mapping procedure work, I tried with 32bit float and I read them fine. 

 

Thank you very much!

 

Jacques 

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You can use the header directxmath_packedvector.h, part of directxmath to do the conversions.

Sixteen bits float on gpu are well documented, you can also write your own conversion. It is one bit sign, 5 exponent and 10 mantissa.

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