Hi Robert,
Robert Osfield wrote:
I will investigate what had gone a miss.
I have now tracked down the problem to a bug in the reassignment of
TextureObject to a new TextureObjectSet, this is now fixed along with
a couple of other bugs due to the unrefAfterApply not being disabled
when the texture pool is enabled. These fixes are now checked into
svn/trunk.
I am currently seeing GL errors reported when running osgmovie of the form:
Warning: detected OpenGL error 'invalid enumerant' after applying
attribute TextureRectangle 0x1fdb4e0
With the onscreen image being corrupted, while if I select a Texture2D
using the osgmovie command line option --texture2D I get:
Warning: detected OpenGL error 'invalid enumerant' after applying
attribute Texture2D 0x1c724e0
But the onscreen image is correct. If comment out the assignment of
the PixelBufferObject in the ImageStream constructor the on screen
errors and the console warnings all disappear so it looks to be a PBO
issue of some kind. I've only tried out this on my ATI card so far so
it could be driver issue.
What results do you get with the bug fixes I've just checked in?
I've just updated and now I get a single corrupted image flashed onto
the screen and then a segfault.
$ osgmovie --mouse --interactive --shaders -e ffmpeg file.avi
image->s()640 image-t()=480 aspectRatio=1
_maxTexturePoolSize=0
_maxBufferObjectPoolSize=0
Created new TextureObject, _numOfTextureObjects 1
GLBufferObjectSet::GLBufferObjectSet _profile._size=1228800
Segmentation fault
If I run in gdb the corrupted image stays, but I'll have to recompile
with debug info to give you a more sensible backtrace. Tomorrow... have
to go now.
jp
---8<---
Created new TextureObject, _numOfTextureObjects 1
GLBufferObjectSet::GLBufferObjectSet _profile._size=1228800
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb2952b90 (LWP 22742)]
0xb6d69e60 in ?? () from /usr/lib/libGLcore.so.1
(gdb) bt
#0 0xb6d69e60 in ?? () from /usr/lib/libGLcore.so.1
Cannot access memory at address 0xa04
(gdb) thread
[Current thread is 5 (Thread 0xb2952b90 (LWP 22742))]
(gdb) info threads
* 5 Thread 0xb2952b90 (LWP 22742) 0xb6d69e60 in ?? ()
from /usr/lib/libGLcore.so.1
4 Thread 0xb3c81b90 (LWP 22741) 0xb7fe1424 in __kernel_vsyscall ()
3 Thread 0xb4482b90 (LWP 22740) 0xb7fe1424 in __kernel_vsyscall ()
2 Thread 0xb4c83b90 (LWP 22739) 0xb7fe1424 in __kernel_vsyscall ()
1 Thread 0xb62a8950 (LWP 22736) 0xb7fe1424 in __kernel_vsyscall ()
Robert.
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