Bugs item #3281206, was opened at 2011-04-08 21:07 Message generated for change (Comment added) made by nobody You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3281206...

Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: rendering (e.g. display) Group: any operating system Status: Pending Resolution: None Priority: 7 Private: No Submitted By: Matteo Sisti Sette (sistisette) Assigned to: Nobody/Anonymous (nobody) Summary: thin white primitive borders are shown despite texture

Initial Comment: Sometimes, depending on their size and/or position, rectangles (and I guess other polygons too but I mainly work with rectangles) are shown with a thin white border even if they are textured with a pix that has no white pixel in the proximity of the border, e.g. a completely black image or an image whose pixels close to the border are all black or transparent.

This has been there for years, I've always seen this happen since I use gem, across many versions. This happens both with Linux and Windows, i don't know on Mac OS.

If a rectangle is moving or changing size, the borders appear and disappear. Most of the time they are absent, I mean the values of position and size that cause the borders to appear are just a small fraction of the total.

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Comment By: Nobody/Anonymous (nobody) Date: 2011-08-16 16:24

Message: What hardware/driver is this specific to? What's the workaround in gem.conf?

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Comment By: IOhannes m zmölnig (zmoelnig) Date: 2011-08-16 16:01

Message: given that the problem is hardware/driver specific, there is a workaround _and_ the workaround can be done globally using gem.conf (in >=0.93), i think this can be closed.

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Comment By: Matteo Sisti Sette (sistisette) Date: 2011-04-23 15:39

Message: Does the hardware really interpolate textures the wrong way? Are we sure Gem is asking the hardware the right thing? If "repeat" is the fix, i suspect it may mask the issue (i.e. make it less evident in some but not all situations) rather than fix it, but I haven't tried it actually.

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Comment By: Cyrille Henry (nusmuk) Date: 2011-04-08 22:35

Message: This is not a gem problem. it's the way the hardware interpolate a texture. i don't remember the exact configuration, but changing the default value of "quality" and/or "repeat" of pix_texture change can fix this problem. since it's not gem fault, and gem offer a solution, i think this can be closed.

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Comment By: Matteo Sisti Sette (sistisette) Date: 2011-04-08 21:10

Message: I hope it is ok to rise the priority. Though this is an old bug, it is a real showstopper in a range of situations.

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You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3281206...