Re: HELP: Superfast Color Conversion?

Rob Targosz wrote:
> I'm trying to implement an algorithm to convert floating point colors in the
> range 0.0 to 1.0 to integer colors in the range 0x0-0xff. The first attempt
> was something like this (please ignore any typos, I'm paraphrasing...):
>
> unsigned int R = G = B = A = 0;
> void SetColor(float r, float g, float b, float a)
> {
>     R = (float)(r * 255.f);
>     if(R > 255) R = 255;
>     G = (float)(g * 255.f);
>     if(G > 255) G = 255;
>     B = (float)(b * 255.f);
>     if(B > 255) B = 255;
>     A = (float)(a * 255.f);
>     if(A > 255) A = 255;
> }

If the numbers are in the range 0 to 1, why do you need to check each 
component for the result being over 255?

I'd still suggest trying to get what's outside your control into your 
control. Sounds like you're doing a float to int RGBA for a full 
buffer each frame, which would be a bit of work any way you look at it.

	Eyal