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Date:	Fri, 4 May 2018 20:16:47 +0200 (CEST)
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From:	gedau AT igor2 DOT repo DOT hu
Subject:	Re: Odp: Re: [geda-user] Opengl PCB and mainline PCB - pcb-rnd
	aspects
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Hello Michael,

On Fri, 4 May 2018, michalwd1979 (michalwd1979 AT o2 DOT pl) [via geda-user AT delori=
e.com] wrote:

>Hello Igor,
>
>Thanks for reply. The features of pcb-rnd are impressive and I really like
>the fast development of the branch. I remember back then when we talked
>about opengl and I've tried to merge some of the rendering code but my
>programming skills were good not enough, sorry... =C2=A0
>
>I am not sure if the problem is my >10 years old PC, my hardly tuned gento=
o,
>wrong compile options or just a bad luck, but I always had speed problems
>with anything but Peter's opengl branch (recently mainline pcb become
>similar in rendering speed). Today I've tried fresh compiled pcb-rnd 1.2.8
>with default:
>./configure --prefix=3D/usr/local --buildin-hid_gtk2_gl --disable-hid_gtk2=
_gdk
>make
>
>Loading more complicated 4 layers board to pcb-rnd makes working on it
>impossible. Moving cursor takes about 15s with cpu load at 100%, zooming
>in/out is even slower. I know that my equipment is nothing compared to
>current (even low-end) machines, but still - the same board in mainline or
>opengl pcb moves/zooms in almost no time.
>If You want me to perform more test with different configure options or wa=
nt
>more data about rest of the system, then let me know. Maybe I have somethi=
ng
>very wrong here.
>

Thanks for reporting.

I think there can be two kind of reasons behind this:

1. opengl related issue; Ade, our opengl expert, will contact you about=20
this. Evan could help with gentoo, it might be some gentoo+opengl=20
installation problem.

2. non-opengl related; a few things you could try:

- turn off visible grid (drawing the dots may be slow if your window is=20
large)

- turn on thin drawing mode (to see if the problem is related to polygon=20
rendering)

- please check how it works with software render (gdk); Note: with=20
pcb-rnd, you do not need to disable HIDs, you can let it detect and=20
compile all HIDs it finds, as you can select your hid runtime. (You can=20
even configure your HID preference: which HIDs should be tried in which=20
order if you didn't explicitly specify a HID to run).


Best regards,

Igor2

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