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  Byte vs. Float based RGBA  (Read 1058 times)
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Offline monty_hall

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« Posted 2009-04-01 18:36:55 »

It would seem to me 4 bytes vs. 16 would at least be more compact in terms of storage.  When would I want to send float based color values?  If precision is needed for color interpolation I would think that the card's internal registers would convert the individual color comonents to a float. 


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Monty Hall
Offline princec

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« Reply #1 - Posted 2009-04-01 19:03:13 »

Don't use floats for colours, basically.

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Offline Riven
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« Reply #2 - Posted 2009-04-01 19:07:53 »

It's basically only valid to use them when you're sending something else than colors to the GPU, typically in GPGPU applications.

Or when you're using HDR, and you're rendering to a FBO backed by a texture.

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