Dave Airlie wrote:
If you take a look at
http://www.skynet.ie/~airlied/butns.png
you'll see the same texture being drawn in two places, however the second
one is corrupt along the triangle join line...
the only difference between the two is the glTranslate called before them
moves the centre point to a different place.. my co-ordinate system is
(-0.5->0.5), on an 800x600 screen. I'm starting to wonder do I need to
change to a 0..800 coordinate and use the 0.375 rule.. as far as I can see
applying a 1.0/800 * 0.375 adjust fixes some cases but breaks others..
any ideas where I'm going wrong? the Mesa SW renderer seems to get it
correct.. am I looking at a chip bug?
As long as the texcoords at all four corners are being translated the
same amount, I wouldn't expect any differences in interpolation along
the shared edge for the two triangles.
If you've got a simple test program, perhaps some of us can test w/
different hardware.
-Brian
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