Hello Gerrit,

I have tested the new ShadowStage::_sfBlitZBuffer with the new render 
order on both of my machines with the following results:

I have uploaded a zip file with some pngs and gliIntercept log files to:

http://www.streamfile.com/myid/slmfABgTgzaN

This file stays there for only 24 hours.



Ok, lets first talk about a common problem. On start up I got the 
following error:

GL ERROR - Function glGetFloatv(GL_DEPTH_COMPONENT32F,0000000000A69B28) 
generated error GL_INVALID_ENUM

from OSGWindow.cpp code at line 1544.

This error does not noticeable affect the application. Do you know what 
causes this error. Is it a real error or only a shortcoming of the 
gliIntercept tool?



Second, the Nvidia platform.
All corresponding files are prefixed with NVIDIA_. Looking at 
NVIDIA_Geforce GTX 560_1.PNG, you can see that it is not that bad :-) 
But if I look from the bottom of the scene (NVIDIA_Geforce GTX 
560_2.PNG) my greenish box (non OpenSG) vanishes. This does happen only 
with activated shadows. I have no explanation for that.



Third, the ATI platform. All corresponding files are prefixed with ATI_. 
Looking at the ATI_Radeon HD 5700 Series.PNG file, you can see that 
there is something strange happening. The log actually reports an error:

GL ERROR - Function 
glBlitFramebufferEXT(0,0,1091,645,0,0,1091,645,0x4500,GL_NEAREST) 
generated error GL_INVALID_OPERATION

Looking form the bottom of the scene (ATI_Radeon HD 5700 Series_2.PNG) 
does not show the vanishing of the greenish box, but the solids are 
gone, leaving alone the non OpenSG part of the scene.



Hopefully, I have provided enough information to get a basic picture of 
what is happening here.

Best,
Johannes




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