Re: [Kicad-developers] Blured text on OpenGL
Hi, There were no recent changes to bitmap fonts. Perhaps we could try the solution Michael had suggested, but no promises on the dates. Regards, Orson On 08/30/2016 06:11 PM, Mário Luzeiro wrote: > Hi all, > > I had a feeling yesterday, on the openGL mode that looks different: low-res > blurred interpolated font. > I may was a bit blurred myself, but I found other users complaining about the > same: > > https://forum.kicad.info/t/switch-of-blurring-of-pad-text-in-new-opengl-engine/3837 > > Any one noticed? Any changes that can causing this? > > I can send a screenshot latter, but from what I remember from memory, it > looks the openGL? was choosing the wrong (the low-res) map of the texture and > not the proper hi-res. > > Mario Luzeiro > ___ > Mailing list: https://launchpad.net/~kicad-developers > Post to : kicad-developers@lists.launchpad.net > Unsubscribe : https://launchpad.net/~kicad-developers > More help : https://help.launchpad.net/ListHelp > signature.asc Description: OpenPGP digital signature ___ Mailing list: https://launchpad.net/~kicad-developers Post to : kicad-developers@lists.launchpad.net Unsubscribe : https://launchpad.net/~kicad-developers More help : https://help.launchpad.net/ListHelp
Re: [Kicad-developers] Blured text on OpenGL
Hey, I think a signed distance field font rendering is a very good compromise between speed and quality. I had suggested that earlier, but it seemed others would not be as convinced... Michael Am 30.08.2016 um 20:41 schrieb Mário Luzeiro: Hi Lorenzo, I was aware of that change / improvement, but for some reason (maybe because I changed for another laptop/screen) it was more noticeable for me theses days. Sorry for the noise ;) Mario From: Kicad-developers [kicad-developers-bounces+mrluzeiro=ua...@lists.launchpad.net] on behalf of Lorenzo Marcantonio [lomar...@tin.it] Sent: 30 August 2016 19:13 To: Kicad Developers Subject: Re: [Kicad-developers] Blured text on OpenGL On Tue, Aug 30, 2016 at 04:11:57PM +, Mário Luzeiro wrote: Hi all, I had a feeling yesterday, on the openGL mode that looks different: low-res blurred interpolated font. I may was a bit blurred myself, but I found other users complaining about the same: https://forum.kicad.info/t/switch-of-blurring-of-pad-text-in-new-opengl-engine/3837 Any one noticed? Any changes that can causing this? Probably it's the new bitmapped font... consumer GPUs are optimized for munching textures, not vectors, so on very busy board the vectorial font was too slow to handle. Now is done with quads (4 vertices) AFAIK, one for each character. In comparison the vector text need to send to the GPU something like 6 vertices for each line segment in the font, more or less an order of magnitude of difference! The cons is that now since the font is bitmapped the resolution is finite and what you call blur is the bilinear filtering of the character images... This should explain the reason, for the details maybe the developers that did it have more informations. -- Lorenzo Marcantonio ___ Mailing list: https://launchpad.net/~kicad-developers Post to : kicad-developers@lists.launchpad.net Unsubscribe : https://launchpad.net/~kicad-developers More help : https://help.launchpad.net/ListHelp ___ Mailing list: https://launchpad.net/~kicad-developers Post to : kicad-developers@lists.launchpad.net Unsubscribe : https://launchpad.net/~kicad-developers More help : https://help.launchpad.net/ListHelp
Re: [Kicad-developers] Blured text on OpenGL
Hi Lorenzo, I was aware of that change / improvement, but for some reason (maybe because I changed for another laptop/screen) it was more noticeable for me theses days. Sorry for the noise ;) Mario From: Kicad-developers [kicad-developers-bounces+mrluzeiro=ua...@lists.launchpad.net] on behalf of Lorenzo Marcantonio [lomar...@tin.it] Sent: 30 August 2016 19:13 To: Kicad Developers Subject: Re: [Kicad-developers] Blured text on OpenGL On Tue, Aug 30, 2016 at 04:11:57PM +, Mário Luzeiro wrote: > Hi all, > > I had a feeling yesterday, on the openGL mode that looks different: low-res > blurred interpolated font. > I may was a bit blurred myself, but I found other users complaining about the > same: > > https://forum.kicad.info/t/switch-of-blurring-of-pad-text-in-new-opengl-engine/3837 > > Any one noticed? Any changes that can causing this? Probably it's the new bitmapped font... consumer GPUs are optimized for munching textures, not vectors, so on very busy board the vectorial font was too slow to handle. Now is done with quads (4 vertices) AFAIK, one for each character. In comparison the vector text need to send to the GPU something like 6 vertices for each line segment in the font, more or less an order of magnitude of difference! The cons is that now since the font is bitmapped the resolution is finite and what you call blur is the bilinear filtering of the character images... This should explain the reason, for the details maybe the developers that did it have more informations. -- Lorenzo Marcantonio ___ Mailing list: https://launchpad.net/~kicad-developers Post to : kicad-developers@lists.launchpad.net Unsubscribe : https://launchpad.net/~kicad-developers More help : https://help.launchpad.net/ListHelp
Re: [Kicad-developers] Blured text on OpenGL
On Tue, Aug 30, 2016 at 04:11:57PM +, Mário Luzeiro wrote: > Hi all, > > I had a feeling yesterday, on the openGL mode that looks different: low-res > blurred interpolated font. > I may was a bit blurred myself, but I found other users complaining about the > same: > > https://forum.kicad.info/t/switch-of-blurring-of-pad-text-in-new-opengl-engine/3837 > > Any one noticed? Any changes that can causing this? Probably it's the new bitmapped font... consumer GPUs are optimized for munching textures, not vectors, so on very busy board the vectorial font was too slow to handle. Now is done with quads (4 vertices) AFAIK, one for each character. In comparison the vector text need to send to the GPU something like 6 vertices for each line segment in the font, more or less an order of magnitude of difference! The cons is that now since the font is bitmapped the resolution is finite and what you call blur is the bilinear filtering of the character images... This should explain the reason, for the details maybe the developers that did it have more informations. -- Lorenzo Marcantonio signature.asc Description: PGP signature ___ Mailing list: https://launchpad.net/~kicad-developers Post to : kicad-developers@lists.launchpad.net Unsubscribe : https://launchpad.net/~kicad-developers More help : https://help.launchpad.net/ListHelp
[Kicad-developers] Blured text on OpenGL
Hi all, I had a feeling yesterday, on the openGL mode that looks different: low-res blurred interpolated font. I may was a bit blurred myself, but I found other users complaining about the same: https://forum.kicad.info/t/switch-of-blurring-of-pad-text-in-new-opengl-engine/3837 Any one noticed? Any changes that can causing this? I can send a screenshot latter, but from what I remember from memory, it looks the openGL? was choosing the wrong (the low-res) map of the texture and not the proper hi-res. Mario Luzeiro ___ Mailing list: https://launchpad.net/~kicad-developers Post to : kicad-developers@lists.launchpad.net Unsubscribe : https://launchpad.net/~kicad-developers More help : https://help.launchpad.net/ListHelp
