Re: [osg-users] Mipmapping for downsampling
Okay, one last try: 1. Have you tried showing the last mip-level (i.e. avg. lum) in a separate window so you can check the value? 2. Have you double checked your actual tone-mapping? (say by providing the average luminance via uniform)? I'm asking this rather silly questions, because last time I looked for an error I simply assumed the error to be in a step where indeed it was not ;-) cheers Sebastian Thank you Sebastian for your support. I appreciate it. More or less. I don't know the exact wording from the specification, but the mipmapping should actually do a bilinear interpolation for 4 neighbouring texels per mip level. I've found many examples that used the last LOD for average lum. This is what I expecting from the mipmapping to implement my tone mapping algorithm. That looks okay. I suppose you are using FrameBuffer Objects and this the setup code for the texture. Exactly, I'm using FBO to render-to-texture. Code: mainCamera-setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OBJECT, osg::Camera::PIXEL_BUFFER_RTT); Have you simply tried the 1000.0 (it is clamped to the last level)? Yes I've tried it. But still the issue. Can you maybe provide a screenshot of your artifacts? Actually a screenshot will not help you as there is no really artifact. Basically the screen is flashing. Some particularly views give a brighter image as no tone mapping was disable. At this moment if I move just a bit the image come back darker as expected from my tone mapping. It's little bit weird... I'm wondering if it is actually the mipmapping or if it is conflicting with an other stuff. Thanks a lot, Kenzo -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50322#50322 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] FBO and mipmaps
Hi
in camera interfaces there are attach method which have parameter to specify
either to generate mipmaps or not for texture rendertarget attachmant, it does
not behave correctly?
Cheers,
Sergey.
27.09.2012, 01:55, Kenzo Lespagnol kenzo.lespag...@cm-labs.com:
Hi Aurelien,
I'm also using FBO and mipmaps and I would like to know if you're solved your
problem. I'm assuming FBO doesn't generate mipmap automatically as described
is this document http://www.songho.ca/opengl/gl_fbo.html.
So I created a drawcallback to my render-to-texture geometry and add this
code:
Code:
struct DrawCallback : public osg::Drawable::DrawCallback
{
DrawCallback(osg::Texture* texture)
: osg::Drawable::DrawCallback()
, _texture(texture)
{}
~DrawCallback()
{}
void drawImplementation(osg::RenderInfo ri,const osg::Drawable* dr) const
{
dr-drawImplementation(ri);
osg::FBOExtensions* fbo_ext =
osg::FBOExtensions::instance(ri.getContextID(),true);
ri.getState()-setActiveTextureUnit(0);
ri.getState()-applyTextureAttribute(0, _texture.get());
fbo_ext-glGenerateMipmapEXT(_texture-getTextureTarget());
}
osg::ref_ptrosg::Texture _texture;
};
I'm not sure about the final result as I've still some bugs. So I'm very
interesting by your solution.
Regards,
Kenzo
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Re: [osg-users] osg, macosx-x86_64 imageio plugin color byte swap problem
Hi Guys
Sorry to raise this again, but I'm currently having the same issue. Basically I
am opening files, doing some bits and bobs to them and reexporting. Just for
completeness I do alter the texture stateattributes, but not in a way I would
think would matter. Here's what I'm doing
Code:
if(_localiseImagePaths){
std::string fileName =
osgDB::getSimpleFileName(texture-getImage(0)-getFileName());
std::string localPath = images/+fileName;
texture-getImage(0)-setFileName(localPath);
}
//disable resize of textures
texture-setResizeNonPowerOfTwoHint(false);
//clamp to edge required for IPhone NPOT support
texture-setWrap(osg::Texture::WRAP_S,
osg::Texture::CLAMP_TO_EDGE);
texture-setWrap(osg::Texture::WRAP_T,
osg::Texture::CLAMP_TO_EDGE);
Then when done I export with the following options to make sure the files are
written as external files for whatever format I'm using.
Code:
osg::ref_ptrosgDB::Options opts = new osgDB::Options();
opts-setOptionString(OutputTextureFiles noTexturesInIVEFile
WriteImageHint=WriteOut);
But when I look at the exported images, or load the exported model file the
image red and blue components seem to be flipped.
I've had a little dig and did start to think it was because some of my images
don't have alpha channels, but I've tested images with alpha channels with no
luck.
I've attached a model that will produce the problem when loaded and reexported
with the above options (on my end at least)
I'm using osg version 3.1.3 and running on OSX 10.7.4, with OSX sdk 10.8, XCode
4.5. I've also tried both 32 and 64 bit builds with no luck.
Any help would be greatly appreciated.
Cheers
Tom
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Re: [osg-users] osg, macosx-x86_64 imageio plugin color byte swap problem
Oops Sorry, the last attached file had a bad png that the plugin can't load. I copied over it with a backup after the colors got swapped and forgot to run it through gimp which seems to sort it. Also I just tested embedding the image into the osgb file, which worked fine. Thanks Tom -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50327#50327 Attachments: http://forum.openscenegraph.org//files/boxmanmodel2_102.zip ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Warning: detected OpenGL error 'invalid enumerant' at After Renderer::compile
On viewing a map.ive file (which I converted from .dem to .ive using osgdem.exe) with osgviewer, the map is being shown with its elevations, but is completely white. I can't see the raster map which is supposed to be draped on it. This is in Linux (osg built with the latest git clone). On windows, when I use osgviewer to view the same map.ive, I see it with its elevations and the raster map draped on it. The error I see in RHEL when I close the viewer is Warning: detected OpenGL error 'invalid enumerant' at After Renderer::compile. The cow.osg file is rendering perfectly fine with all reflections visible on the cow. I haven't yet installed the graphics drivers for my NVidia card, so the framerate is low, but I don't see why the raster doesn't render when the cow does. On typing glxinfo, I get this: name of display: :0.0 display: :0 screen: 0 direct rendering: Yes server glx vendor string: SGI server glx version string: 1.4 client glx vendor string: Mesa Project and SGI client glx version string: 1.4 GLX version: 1.4 OpenGL vendor string: Mesa Project OpenGL renderer string: Software Rasterizer OpenGL version string: 2.1 Mesa 7.11 OpenGL shading language version string: 1.20 (deleted a lot of the blah blah that got printed with the glxinfo command) -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50328#50328 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Warning: detected OpenGL error 'invalid enumerant' at After Renderer::compile
On viewing a map.ive file (which I converted from .dem to .ive using osgdem.exe) with osgviewer, the map is being shown with its elevations, but is completely white. I can't see the raster map which is supposed to be draped on it. This is in Linux (osg built with the latest git clone). On windows, when I use osgviewer to view the same map.ive, I see it with its elevations and the raster map draped on it. The error I see in RHEL when I close the viewer is Warning: detected OpenGL error 'invalid enumerant' at After Renderer::compile. The cow.osg file is rendering perfectly fine with all reflections visible on the cow. I haven't yet installed the graphics drivers for my NVidia card, so the framerate is low, but I don't see why the raster doesn't render when the cow does. On typing glxinfo, I get this: name of display: :0.0 display: :0 screen: 0 direct rendering: Yes server glx vendor string: SGI server glx version string: 1.4 client glx vendor string: Mesa Project and SGI client glx version string: 1.4 GLX version: 1.4 OpenGL vendor string: Mesa Project OpenGL renderer string: Software Rasterizer OpenGL version string: 2.1 Mesa 7.11 OpenGL shading language version string: 1.20 (deleted a lot of the blah blah that got printed with the glxinfo command) Help? How can I get the raster portion of the map to get displayed? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50329#50329 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Polytope - Intersections sorted by distance of localIntersectionPoint and the reference plane
Hi again, After thinking about it here is what I think the answer is. Let's say our polytope intersects two circles (or rectangles) A and B, each at two points A1, A2 and B1, B2 The center point of A1 and A2 is computed, denote by centerA12 The center point of B1 and B2 is computed, denote by centerB12 Then the distance is measured from centerA12, and centerB12 to the reference plane. By default the reference plane is the last plane in teh polytope - meaning, if the polytope is made out of 5 half-planes, the last one is the default reference plane (the last one, as the last one in the data structure the half-planes are stored). The polytope intersector then stores the nodes sorted by the distance as described above. Still need to understand what happens if one of the circles is completely inside the polytope, what is the order of such an object in the sorting scheme. Also, another question I was asking myself, was about duplicate reporting. Let's say I have a parent and a child node both at the same location. When the polytope intersector intersects both, are they reported as 2 different intersections (each having their own path, which is the same except of one node)? (I would say yes) Cheers, Ron -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50330#50330 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Warning: detected OpenGL error 'invalid enumerant' at After Renderer::compile
Update your gfx driver and see what happens. Perhaps you map file is built using an OGL feature your current driver doesn't support. Maybe NPOT textures or something? -- Chris 'Xenon' Hanson, omo sanza lettere. xe...@alphapixel.com http://www.alphapixel.com/ Training • Consulting • Contracting 3D • Scene Graphs (Open Scene Graph/OSG) • OpenGL 2 • OpenGL 3 • OpenGL 4 • GLSL • OpenGL ES 1 • OpenGL ES 2 • OpenCL Digital Imaging • GIS • GPS • Telemetry • Cryptography • Digital Audio • LIDAR • Kinect • Embedded • Mobile • iPhone/iPad/iOS • Android ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Qt crashes on key press
On Wednesday 26 Sep 2012 11:33:44 Max Sergeev wrote: Allright, I think I've got another, more global question: is there a way to make OSG ignore all keypresses, all keyboard events? Just like this, so it would not react on S, W or even Escape keypresses You can stop a Viewer from exiting on Escape by calling viewer.setKeyEventSetsDone(0); on it. The osgvnc example is using this, for instance. See the ViewerBase documentation for more information about this. HTH, Magnus -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50309#50309 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osg, macosx-x86_64 imageio plugin color byte swap problem
Hi Again So I've done some more digging and seems I'm hitting a case they may be known to not work. So in the function CreateCGImageFromOSGData under the case for GL_BGRA I am entering the else of the if statement. if(GL_UNSIGNED_INT_8_8_8_8_REV == osg_image.getDataType()). In there is this with the following code and comment // FIXME: Don't know how to handle this case bitmap_info = kCGImageAlphaPremultipliedLast; What's weird is all my images seem to take this path even if I think they are pure rgb images. I've found this function vImagePermuteChannels_ARGB, which I think can help me out, I just need to decide when to do it, to not break everyone else's functionality. Cheers Tom -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50333#50333 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] FBO and mipmaps
Hi Sergey, When I attach a texture to the camera should I specify also the number of desired mipmap levels? Code: slaveCameraLogAveragedLum-attach(osg::Camera::COLOR_BUFFER0, logAveragedLumTexture.get(), numMipMap, 0, /*mipmap*/true); In the documentation it is said The level parameter controls the mip map level of the texture that is attached Am I understanding correctly this parameter? Hi in camera interfaces there are attach method which have parameter to specify either to generate mipmaps or not for texture rendertarget attachmant, it does not behave correctly? Cheers, Sergey. Thank you! Cheers, Kenzo[/code] -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50334#50334 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Bug in Qt thread integration
Hi, We have a large app that uses Qt for its 2D UI and OSG for 3D rendering and UI. So it seemed like a good idea to turn on the Qt-OpenThreads integration by enabling BUILD_OPENTHREADS_WITH_QT. However, I discovered that OpenThreads::Thread::CurrentThread() (in src/OpenThreads/qt/QtThread.cpp) does: Code: QtThreadPrivateData* pd = static_castQtThreadPrivateData*(QThread::currentThread()); If this is called when the current thread is a QThread that's not an OpenThreads Thread, the cast isn't valid and Bad Things(TM) will happen. This happens in our application (and when we're lucky we get a seg fault). We can disable BUILD_OPENTHREADS_WITH_QT without significant problem, but I wanted to report the bug and suggest that the documentation be changed to tell people not to enable this until it's fixed. BTW, we are using Qt 4.8.1 on RHEL5, but it looks like this problem could occur on any platform. Thank you! Cheers, Chris -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50335#50335 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] FBO and mipmaps
Hi This parameter allows you to directly attach specified mipmap level of texture to fbo. If you just need to render to texture and let it generate mipmaps you should attach level 0. You can set desired number of generated mipmap levels by logAveragedLumTexture-setNumMipmapLevels(numLevels). Cheers, Sergey. 27.09.2012, 19:51, Kenzo Lespagnol kenzo.lespag...@cm-labs.com: Hi Sergey, When I attach a texture to the camera should I specify also the number of desired mipmap levels? Code: slaveCameraLogAveragedLum-attach(osg::Camera::COLOR_BUFFER0, logAveragedLumTexture.get(), numMipMap, 0, /*mipmap*/true); In the documentation it is said The level parameter controls the mip map level of the texture that is attached Am I understanding correctly this parameter? Hi in camera interfaces there are attach method which have parameter to specify either to generate mipmaps or not for texture rendertarget attachmant, it does not behave correctly? Cheers, Sergey. Thank you! Cheers, Kenzo[/code] -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50334#50334 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Bug in Qt thread integration
Hi,
I'm surprised that QThread::currentThread() can return something else than a
QThread instance.
But if this is really the case, the following should solve the issue :
Code:
QThread* pQThread = dynamic_cast QThread* (QThread::currentThread());
if (pQThread != NULL)
{
QtThreadPrivateData* pd = static_cast QtThreadPrivateData (pQThread);
}
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Re: [osg-users] How to ignore keyboard events
Magnus Kessler wrote: On Wednesday 26 Sep 2012 11:33:44 Max Sergeev wrote: You can stop a Viewer from exiting on Escape by calling viewer.setKeyEventSetsDone(0); on it. The osgvnc example is using this, for instance. See the ViewerBase documentation for more information about this. Thanks for the answer, it does block the Escape key I suppose, but still didnt solve my problem: qt controls on click of Escape key still change their positions and become unclickable. I thought there could be some more global way, like blocking the key events for whole application -- like they just are not clicked. Will do check the example and documentation you suggested, thanks. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50340#50340 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
