Hi Andreas,
and what has to be done now?
Yvonne Jung has send me the FBOViewport pre alpha code, which I used
before. There was an example program which work at that time. Now, it
also doesn't work.
But I found out, that there is an nvidia graphics driver problem. With
the latest driver 93.71, all programs which use the fbo extension don't
work and display errors like:
I need GL_EXT_framebuffer_object-Extension!
It seems, that nvidia changed some extensions or does not suppport fbos
anymore or in another way. In the previous driver 91.31, normal opengl
programs which are using fbos are working. But the OpenSG programs do
not work. In the older driver 84.21 at least Yvonnes example works. And
if this is not enough, they changed from driver to driver some GLSL
instructions (for example from textureRect to texture2DRect). Strange
things which do headaches to me.
regards
Oliver
Andreas Zieringer schrieb:
Hi Oliver,
looks like a missing glPopAttrib or glPopMatrix.
Andreas
Hi,
it is a nearly a year ago that I stopped working with OpenSG.
Now I'm back :-) , and I want to compile my program on which I worked
last with the new OpenSG 1.8a dailybuild (today's binary, windows,
vs2005). Last year, I used the OpenSG 1.6 with an FBOViewport which I
compiled for myself, because the FBOViewport hasn't been integrated yet.
I compiled it on Suse Linux and it worked: I have input float textures
and rendered to an out texture (also with float values)!
Ok, now the FBOViewport is integrated and I have some problems running
my old program on windows. When I start using the FBOViewport I get an
error (every frame) and I don't know, if it is an OpenSG error or not.
And I don't know how to fix it. Last year I used an NVIDIA Geforce 6600
GT and now I'm using the NVIDIA Geforce 7600 GT.
Here's the error:
WARNING: FBO render post OpenGL Error: stack overflow!
When I'm using another 'pure' OpenGL program with the FBO extension
(render to a float texture, similar to my OpenSG program), everything is
working without errors.
I hope, anyone can help me.
regards
Oliver
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