yes with code from Git, I got "Direct Rendering enabled!" posted on window creation. by changing GL_TRUE to GL_FALSE in gemglxwindow.cpp:303 [1] I don't get this message again but the FPS stay at 60fps (@Cyrille : with pixel_liquide2_57.pd, 1920x1080, framebuffer rendering)
Moreover according to [2], Nvidia's driver are using GLX not DRI but I can't verify this yet. Note that the repo contains an example on how to share texture between 2 process on embedded hardware (EGL) using DRI, maybe this note only apply to embedded Nvidia's driver.
+ a
[1] : https://github.com/avilleret/Gem/blob/master/src/Output/gemglxwindow.cpp#L30... [2] : https://github.com/pcwalton/linux-drm-sharing-test/blob/master/README -- do it yourself http://antoine.villeret.free.fr
2014-10-27 19:17 GMT+01:00 Cyrille Henry ch@chnry.net:
how did you get hardware acceleration without DRI?
cheers c
Le 27/10/2014 18:04, Antoine Villeret a écrit :
why ? how huge ?
I understand that direct rendering could improve performances but I can run very GPU expensive patchs you made without direct rendering and without noticable difference.
So it may be worth a try...
a
do it yourself http://antoine.villeret.free.fr
2014-10-27 11:11 GMT+01:00 Cyrille Henry ch@chnry.net:
Le 27/10/2014 10:41, Antoine Villeret a écrit :
hello,
since texture sharing seems to work between context inside one Gem's instance, I'm now wondering how we can introduce texture sharing between process. According to [1], texture (and more generally display list) can be shared between process if direct rendering is disabled and process are using the same X server. If I understand correctly, the only thing to do is to share the display list structure over process. Could we use shared memory to do that ?
I look into the [gemglxwindow] and [gemglutwindow] code and it looks a bit obscure to me, it uses advanced C++ idioms (PIMPL for the former and CALLBACK4WIN for the latter) that I don't understand well yet. So I want to know if this texture sharing between process is feasible before going deeper.
direct rendering disable? that's look like a huge problem...
cheers c
Cheers
Antoine
[1] : https://www.opengl.org/sdk/docs/man2/xhtml/glXCreateContext.xml
do it yourself http://antoine.villeret.free.fr
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