[SDL] help with displaying grayscale buffers

[grapesmoker]

Hi James,

You are correct, I only have one 16-bit value that represents the light
intensity. I should have made that clearer.

I am using Windows XP and the video card I have supports that resolution.
The weirdest thing is that I once got this code to work, but then I changed
something (I don't remember what) and I no longer am able to view the image
the way I want (which would be as a smooth grayscale). I would settle for an
8-bit grayscale too, since the display itself is not for precision
measurements (those are done on the saved images).

Is the image I uploaded visible? I could upload another if it's not. Thanks
for your attempt to help.

Jerry



another james wrote:
> 
> Wait a minute!
> 
> You probably have only (1) 16-bit value to look at simply as a light
> intensity.
> 
> Do you have a video card that can show you 16 bits of resolution of pure
> intensity?
> I think you'd need a card that can do 16 bits on each of the RGB DACs.
> 
> If SDL is structured all the way through to look at RGB color values as 8
> bit values, then you're kinda' screwed.
> 
> What OS are you dealing with?
> 
> James.   :o)
> 
> 

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