[Mesa3d-dev] bug when applying scale and bias

[Stephane C. <Ste...@em...>]

Hello.

I tried to use glCopyPixels with some scale and bias,
and I get one-pixel width "stripes" instead of plain rectangles,
as if line adressing in a pixmap was broken.

I changed in swrast/s_copypix.c:198

GLfloat (*rgba)[4] = (GLfloat (*)[4]) tmpImage + row * width * 4;

for:

GLfloat (*rgba)[4] = tmpImage + row * width * 4;

and the bug is fixed. There is a similar statement at line 230,
I suspect it's buggy as well since convImage is in the same
format than tmpImage.

About bug policy: each time I get a bug, I try to find at least
a workaround (at least to be sure it's a bug), if not a fix.
Do I have to submit an entry in the bug database in this case ?

Regards,


--
Stephane Conversy
Ecole des Mines de Nantes