[Bug 61690] Graphic issue on PCSX2 with Gallium 0.4 on AMD RS780

https://bugs.freedesktop.org/show_bug.cgi?id=61690

--- Comment #8 from gregory.hainaut@gmail.com --- Created attachment 76525 --> https://bugs.freedesktop.org/attachment.cgi?id=76525&action=edit texture good

Hello Alex,

I'm a developper of PCSX2 and made some tests on my side. I think I understand the cause of the bad rendering.

At the beginning of the program we upload a float texure (see attachment). I ask Lukk to dump the texture with glGetTexImage (see attachment). If you compare both textures, we will see that some floats were rounded. I upload Lukk's texture and I can confirm you that we got same rendering issue.

The upload of the texture is fine on my HD5770 with mesa 8.0.5. So the issue feel chip specific.

Cheers.