kicad-developers team mailing list archive

[Maciej Sumiński <maciej.suminski@xxxxxxx>]

I have just enabled regular OpenGL mipmapping, but I do not see a
significant difference. I consider the mentioned text (net name on pad
1, C2) to be just too small to make it readable. If you compare the
original font and legacy view, they have the same problem and I am not
sure we can do much about it.

Regards,
Orson

On 04/14/2016 04:23 PM, Mário Luzeiro wrote:
> ya I think so :)
> 
> My suggestion was:
> Lets say you create that big texture with 32px
> now you create a new texture (half of the size?) for 16px size
> ... etc
> 
> When render the text, you have to select the right size / texture
> If you are rendering at size 0.5 .. to 1.0 you will use the 32px texture
> but if you are rendering <0.5 you will use the 16px texture at scale 1:1
> .. something like that ..
> 
> This would be like a manual "midmapping"
> 
> In another way, in my opinion, the best approach would be: you will never scale the original texture scale, and render it always on the original size, so there will be no resize artifacts. (and in this case you would need different textures sizes for different discrete sizes)
> 
> but if you manage to enable the midmapping in opengl and see that it works OKs.. so I guess that it "will work for now"
> .. but mind that the openGL midmapping may be an overwriten quality option by the system configuration.
> 
> my 2 cents (of €uro)! :P
> Mario
> 
> ________________________________________
> From: Maciej Sumiński [maciej.suminski@xxxxxxx]
> Sent: 14 April 2016 14:38
> To: Mário Luzeiro; KiCad Developers
> Subject: Re: [Kicad-developers] Bitmap fonts
> 
> On 04/14/2016 12:25 PM, Mário Luzeiro wrote:
>>> But I like your idea, mipmapping could enhance the result.
>>
>> I was expecting that the openGL midmapping could help.. but.. looking in your screenshots and thinking generally, It would be better to proper render the anti-aliased font in a set of textures.
>> "render anti-aliased font for the different sizes" != "midmapping" (I guess!)
>>
>> So you have to manually select the texture font and scale to apply to the char square.
>> You may try to do it dynamically (probably as you are already doing it)
> 
> I am not sure if I understand correctly. Do you propose just a few font
> sizes available as separate textures? E.g. there are atlases for font
> sizes: 8px, 16px, 24px, 32px and we use exclusively these values?
> 
> Cheers,
> Orson
>

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