Re: Creating a movie

[Kevin Fitch <kfitch@xxxxxxxxxxx>]

Thanks ... actually the glPixelStorei(GL_PACK_ALIGNMENT, 1) seems to 
have helped (well that and I realized that I didnt actually have a 
current GL context, oooops).
kkonaka@xxxxxxxxxxxx wrote:

> hi!
>
> similar code I've written several years ago looks something
> like this; I'm not sure if this really helps -- but anyway:
>
> void readLeft(void *, SoAction *)
> {
>   static int c;
>   unsigned char *p;
>   unsigned char *tail = (unsigned char *) ImageLeft + sizeof ImageLeft;
>
>   // printf("readframe_left_buffer %d\n", c);
>   
>   glPushMatrix();
>   glReadBuffer(GL_FRONT);
>   glPixelStorei(GL_PACK_ALIGNMENT, 1);
>   glReadPixels(0, 0, IMAGEW, IMAGEH, GL_RGBA, GL_UNSIGNED_BYTE, ImageLeft);
>   for (p = (unsigned char *) ImageLeft; p < tail; )
>     *(p++) &= 0xf0;
>   glPopMatrix();
> }
>
>
> (actually I don't remember why I was doing
>     *(p++) &= 0xf0;
> part; maybe it's not necessary at all :p)

My guess is you were doing red/green 3-d glasses stuff.

Kevin