I have done a little work on gemframebuffer recently. I added a message for changing the background color and also uncommented some of the glMatrix() code. It is close to rendering properly but has the following problems:
- OSX only works with exact powers of two for size - separator doesn't work in chains following gemframebuffer - all geos are textured with the contents of gemframebuffer
I'm kind of slow when it comes to correctly setting and unsetting the glMatrix calls, so that is probably where the problem lies. It seems trickier with basically having a completely different rendering target inside of another one too.
Testing patch attached.
chris clepper wrote:
I have done a little work on gemframebuffer recently. I added a message for changing the background color and also uncommented some of the glMatrix() code. It is close to rendering properly but has the following problems:
cool, i want mirrors!
- OSX only works with exact powers of two for size
true for linux too.
- separator doesn't work in chains following gemframebuffer
it does work, but in your example patch the left subchain is rendered _before_ the right ([separator]ed) subchain, that's why the [separator] does not have any effect. either use [separator]s for _all_ subchains, or use [t a a] (it's like in pd ;-))
- all geos are textured with the contents of gemframebuffer
it does work, but you have to glDisable() things you have glEnable()d ;-)
Testing patch attached.
i attached a "fixed" version.
mf.asdr IOhannes
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On 9/20/06, IOhannes m zmoelnig zmoelnig@iem.at wrote:
- separator doesn't work in chains following gemframebuffer
it does work, but in your example patch the left subchain is rendered _before_ the right ([separator]ed) subchain, that's why the [separator] does not have any effect. either use [separator]s for _all_ subchains, or use [t a a] (it's like in pd ;-))
I caught that after sending it.
- all geos are textured with the contents of gemframebuffer
it does work, but you have to glDisable() things you have glEnable()d ;-)
That is part of the the multitexture that I don't get. Would it not be better to pass that directly to pix_multitexture rather than have a fake postrender glDisable()?
Testing patch attached.
i attached a "fixed" version.
Thanks.
It looks like the glFrustum call in gemframebuffer is messing up the matrices. Resize the example patch to 640x480 to see it happen. I think it is too late to reset the frustum in postrender() so each gemhead after is wrong. Maybe each gemhead has to set it using the GemMan settings? There might be another solution as well.
Setting the viewport and frustum in gemhead does seem to work. However, I think this would require pretty extensive testing since it changes an essential rendering object.
I will be gone until next Tuesday which would be a good time for someone to come up with an alternative solution.
On 9/20/06, chris clepper cgclepper@gmail.com wrote:
It looks like the glFrustum call in gemframebuffer is messing up the matrices. Resize the example patch to 640x480 to see it happen. I think it is too late to reset the frustum in postrender() so each gemhead after is wrong. Maybe each gemhead has to set it using the GemMan settings? There might be another solution as well.
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chris clepper -
IOhannes m zmoelnig