<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - [softpipe] piglit fbo-generatemipmap-cubemap S3TC_DXT1 regression" href="https://bugs.freedesktop.org/show_bug.cgi?id=77161#c2">Comment # 2</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - [softpipe] piglit fbo-generatemipmap-cubemap S3TC_DXT1 regression" href="https://bugs.freedesktop.org/show_bug.cgi?id=77161">bug 77161</a> from <a class="email" href="mailto:sroland@vmware.com" title="Roland Scheidegger <sroland@vmware.com>"> Roland Scheidegger</a> <pre>I don't think this qualifies as a blocker. Cubemaps aren't quite right on softpipe anyway due to doing face selection per quad (which I suspect is also what's causing this bug, probably pick the wrong face, since it considers the average of all 2x2 pixels to chose the face, no matter if those pixels are actually inside the primitive or not). The driver can do seamless filtering (probably useless here I guess) but the initial face selection is always per quad. If this is what's happening here, this is not easily fixable (don't even have the information which pixels are lit in the sampling code and doing per pixel face selection is anything but trivial though obviously can be done. Or could try to be clever and use per-pixel faces when the derivatives aren't needed). Some cpu based blitter instead of relying on u_blitter for softpipe would also be possible (and be at least an order of magnitude faster). As a side note, I suspect we need to allow some form of casting cube to 2d (array) resources at some point and vice versa, though possibly some drivers can't do it. (d3d10.1 no longer has cube map resources, it's all just 2d (arrays).) This would be less work for everyone (who can do it) and eliminate such issues for free.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>