[Bf-committers] Proposed default margin increase for baked textures
Hey everyone, I want to propose a change the default margin value that is currently used when baking textures. The current margin of 2px is no where near enough and really doesn't help anyone due to the fact that it only is enough for the initial baked texture and not for any further mip levels that may be needed. As I'm sure some of you may be aware, you need at least 1px of margin per UV island to be correct for each mip map level as the texture is resized down, in order to stop the background colour from bleeding into the UV islands. I would recommend using a value of 16px as the new default as this would allow for 3 mip levels in addition to the initial bake, as long as the background colour is correct) which should be enough in most cases as the texture is resized down (16px>8px>4px>2px). Ideally of course we would set the margin so high that there is actually no background colour, but I don't think that many people would go for that as some feel that it makes the texture look messy, however irrelevant this may be, some people do care about how their textures look even if you will never see margin on the final mesh. ;) Please take a look at the link below for an example of what an incorrect margin value can look like when viewed on your mesh. http://blenderartists.org/forum/showthread.php?279870-seams-artifacts-with-tangent-normal-map-in-blender-and-unity For clarification, this is applicable to all baked textures, not just normal maps Cheers, -Andy ___ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers
Re: [Bf-committers] Proposed default margin increase for baked textures
I agree completely. I think the default of 2 might have been set by someone who didn't take mip levels into account. To be honest I generally use 32 or 64 as margin depending on texture size (larger texture means more mips). But I suppose 16 as default which I think is also what it is in xNormal seems reasonable. At the very least I'll echo that 2 is no good :) The background color will bleed into the subsequent mip levels too quickly. Cheers, Morten. On Fri, Feb 22, 2013 at 9:18 PM, metalliandy wrote: > Hey everyone, > > I want to propose a change the default margin value that is currently > used when baking textures. > > The current margin of 2px is no where near enough and really doesn't > help anyone due to the fact that it only is enough for the initial baked > texture and not for any further mip levels that may be needed. As I'm > sure some of you may be aware, you need at least 1px of margin per UV > island to be correct for each mip map level as the texture is resized > down, in order to stop the background colour from bleeding into the UV > islands. > I would recommend using a value of 16px as the new default as this would > allow for 3 mip levels in addition to the initial bake, as long as the > background colour is correct) which should be enough in most cases as > the texture is resized down (16px>8px>4px>2px). > Ideally of course we would set the margin so high that there is actually > no background colour, but I don't think that many people would go for > that as some feel that it makes the texture look messy, however > irrelevant this may be, some people do care about how their textures > look even if you will never see margin on the final mesh. ;) > > Please take a look at the link below for an example of what an incorrect > margin value can look like when viewed on your mesh. > > http://blenderartists.org/forum/showthread.php?279870-seams-artifacts-with-tangent-normal-map-in-blender-and-unity > > For clarification, this is applicable to all baked textures, not just > normal maps > > > Cheers, > > -Andy > ___ > Bf-committers mailing list > Bf-committers@blender.org > http://lists.blender.org/mailman/listinfo/bf-committers > ___ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers
Re: [Bf-committers] Proposed default margin increase for baked textures
+1 from me too - I always bump that level up to a min of 16. I could see less if your UV's were really packed in tight, but 16 or higher usually is what does the trick for killing nasty seams for me. One less thing to worry about for most cases would be great. -Sean On Sat, Feb 23, 2013 at 11:01 AM, Morten Mikkelsen wrote: > I agree completely. I think the default of 2 might have been set by someone > who > didn't take mip levels into account. To be honest I generally use 32 or 64 > as margin > depending on texture size (larger texture means more mips). > > But I suppose 16 as default which I think is also what it is in xNormal > seems reasonable. > > At the very least I'll echo that 2 is no good :) The background color will > bleed into the subsequent mip levels > too quickly. > > Cheers, > > Morten. > > > > > > On Fri, Feb 22, 2013 at 9:18 PM, metalliandy > wrote: > > > Hey everyone, > > > > I want to propose a change the default margin value that is currently > > used when baking textures. > > > > The current margin of 2px is no where near enough and really doesn't > > help anyone due to the fact that it only is enough for the initial baked > > texture and not for any further mip levels that may be needed. As I'm > > sure some of you may be aware, you need at least 1px of margin per UV > > island to be correct for each mip map level as the texture is resized > > down, in order to stop the background colour from bleeding into the UV > > islands. > > I would recommend using a value of 16px as the new default as this would > > allow for 3 mip levels in addition to the initial bake, as long as the > > background colour is correct) which should be enough in most cases as > > the texture is resized down (16px>8px>4px>2px). > > Ideally of course we would set the margin so high that there is actually > > no background colour, but I don't think that many people would go for > > that as some feel that it makes the texture look messy, however > > irrelevant this may be, some people do care about how their textures > > look even if you will never see margin on the final mesh. ;) > > > > Please take a look at the link below for an example of what an incorrect > > margin value can look like when viewed on your mesh. > > > > > http://blenderartists.org/forum/showthread.php?279870-seams-artifacts-with-tangent-normal-map-in-blender-and-unity > > > > For clarification, this is applicable to all baked textures, not just > > normal maps > > > > > > Cheers, > > > > -Andy > > ___ > > Bf-committers mailing list > > Bf-committers@blender.org > > http://lists.blender.org/mailman/listinfo/bf-committers > > > ___ > Bf-committers mailing list > Bf-committers@blender.org > http://lists.blender.org/mailman/listinfo/bf-committers > -- ||-- Instant Messengers -- || ICQ at 11133295 || AIM at shatterstar98 || MSN Messenger at shatte...@hotmail.com || Yahoo Y! at the_7th_samuri ||-- ___ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers
Re: [Bf-committers] Proposed default margin increase for baked textures
On Sat, Feb 23, 2013 at 8:30 PM, Sean Olson wrote: > +1 from me too - I always bump that level up to a min of 16. I could see > less if your UV's were really packed in tight, but 16 or higher usually is > what does the trick for killing nasty seams for me. One less thing to > worry about for most cases would be great. > > -Sean Where do you set that? -- Douglas E Knapp Creative Commons Film Group, Helping people make open source movies with open source software! http://douglas.bespin.org/CommonsFilmGroup/phpBB3/index.php Massage in Gelsenkirchen-Buer: http://douglas.bespin.org/tcm/ztab1.htm Please link to me and trade links with me! Open Source Sci-Fi mmoRPG Game project. http://sf-journey-creations.wikispot.org/Front_Page http://code.google.com/p/perspectiveproject/ ___ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers
Re: [Bf-committers] Proposed default margin increase for baked textures
Bake panel> Margin #px :) On 23 Feb 2013, at 21:24, Knapp wrote: > On Sat, Feb 23, 2013 at 8:30 PM, Sean Olson wrote: >> +1 from me too - I always bump that level up to a min of 16. I could see >> less if your UV's were really packed in tight, but 16 or higher usually is >> what does the trick for killing nasty seams for me. One less thing to >> worry about for most cases would be great. >> >> -Sean > > Where do you set that? > > > -- > Douglas E Knapp > > Creative Commons Film Group, Helping people make open source movies > with open source software! > http://douglas.bespin.org/CommonsFilmGroup/phpBB3/index.php > > Massage in Gelsenkirchen-Buer: > http://douglas.bespin.org/tcm/ztab1.htm > Please link to me and trade links with me! > > Open Source Sci-Fi mmoRPG Game project. > http://sf-journey-creations.wikispot.org/Front_Page > http://code.google.com/p/perspectiveproject/ > ___ > Bf-committers mailing list > Bf-committers@blender.org > http://lists.blender.org/mailman/listinfo/bf-committers ___ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers
Re: [Bf-committers] Proposed default margin increase for baked textures
On Sun, Feb 24, 2013 at 1:17 AM, metalliandy...@googlemail.com wrote: > Bake panel> Margin #px :) > > On 23 Feb 2013, at 21:24, Knapp wrote: > >> On Sat, Feb 23, 2013 at 8:30 PM, Sean Olson wrote: >>> +1 from me too - I always bump that level up to a min of 16. I could see >>> less if your UV's were really packed in tight, but 16 or higher usually is >>> what does the trick for killing nasty seams for me. One less thing to >>> worry about for most cases would be great. >>> >>> -Sean >> >> Where do you set that? >> >> >> -- >> Douglas E Knapp Ah, thanks. I see my problem. I have been only working in cycles for some time but this panel only shows up with internal render. PS someone working the manual might want to point that fact out. -- Douglas E Knapp Creative Commons Film Group, Helping people make open source movies with open source software! http://douglas.bespin.org/CommonsFilmGroup/phpBB3/index.php Massage in Gelsenkirchen-Buer: http://douglas.bespin.org/tcm/ztab1.htm Please link to me and trade links with me! Open Source Sci-Fi mmoRPG Game project. http://sf-journey-creations.wikispot.org/Front_Page http://code.google.com/p/perspectiveproject/ ___ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers
Re: [Bf-committers] Proposed default margin increase for baked textures
+1 for the increased default margin as well from me. On Feb 24, 2013, at 3:29 AM, Knapp wrote: > On Sun, Feb 24, 2013 at 1:17 AM, metalliandy...@googlemail.com > wrote: >> Bake panel> Margin #px :) >> >> On 23 Feb 2013, at 21:24, Knapp wrote: >> >>> On Sat, Feb 23, 2013 at 8:30 PM, Sean Olson wrote: +1 from me too - I always bump that level up to a min of 16. I could see less if your UV's were really packed in tight, but 16 or higher usually is what does the trick for killing nasty seams for me. One less thing to worry about for most cases would be great. -Sean >>> >>> Where do you set that? >>> >>> >>> -- >>> Douglas E Knapp > > Ah, thanks. I see my problem. I have been only working in cycles for > some time but this panel only shows up with internal render. PS > someone working the manual might want to point that fact out. > > -- > Douglas E Knapp > > Creative Commons Film Group, Helping people make open source movies > with open source software! > http://douglas.bespin.org/CommonsFilmGroup/phpBB3/index.php > > Massage in Gelsenkirchen-Buer: > http://douglas.bespin.org/tcm/ztab1.htm > Please link to me and trade links with me! > > Open Source Sci-Fi mmoRPG Game project. > http://sf-journey-creations.wikispot.org/Front_Page > http://code.google.com/p/perspectiveproject/ > ___ > Bf-committers mailing list > Bf-committers@blender.org > http://lists.blender.org/mailman/listinfo/bf-committers ___ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers
Re: [Bf-committers] Proposed default margin increase for baked textures
This is trivial but will require yet another version patch. If others agree I could commit it wit h a value of 16. ___ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers
Re: [Bf-committers] Proposed default margin increase for baked textures
Go for it! :) On Sun, Mar 3, 2013 at 7:01 PM, Antony Riakiotakis wrote: > This is trivial but will require yet another version patch. If others > agree I could commit it wit h a value of 16. > ___ > Bf-committers mailing list > Bf-committers@blender.org > http://lists.blender.org/mailman/listinfo/bf-committers > ___ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers
Re: [Bf-committers] Proposed default margin increase for baked textures
On Mon, Mar 4, 2013 at 3:32 PM, Morten Mikkelsen wrote: > Go for it! :) > > > > > On Sun, Mar 3, 2013 at 7:01 PM, Antony Riakiotakis wrote: > >> This is trivial but will require yet another version patch. If others >> agree I could commit it wit h a value of 16. Why version patch?, old files can keep their margin. Just update scene.c's bake_filter for newly added scenes, rna_scene.c's default and startup.blend. -- - Campbell ___ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers
Re: [Bf-committers] Proposed default margin increase for baked textures
Awesome! Thanks! -Andy On 04/03/2013 04:35, Campbell Barton wrote: > On Mon, Mar 4, 2013 at 3:32 PM, Morten Mikkelsen wrote: >> Go for it! :) >> >> >> >> >> On Sun, Mar 3, 2013 at 7:01 PM, Antony Riakiotakis wrote: >> >>> This is trivial but will require yet another version patch. If others >>> agree I could commit it wit h a value of 16. > Why version patch?, old files can keep their margin. > Just update scene.c's bake_filter for newly added scenes, > rna_scene.c's default and startup.blend. > ___ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers
