Re: [osg-users] colours in Android OSG
Hi Jorge and thanks for your reply. The file I am loading in the viewers is cell.osg (attached), which on Windows/Linux appears like screen_shot_0_0.jpg In the OSG android viewer example it appears like osgAndroidLightOn.jpg and if I toggle the light with the corresponding button I get osgAndroidLightOff.jpg. no message in LogCat about lights, the only message is about arial.ttf missing. I know I am probably showing how daft I am, but I thought the viewers would have shown the same model in the same way. Thanks Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47289#47289 Attachments: http://forum.openscenegraph.org//files/osgandroidlightoff_208.jpg http://forum.openscenegraph.org//files/osgandroidlighton_123.jpg http://forum.openscenegraph.org//files/screen_shot_0_0_185.jpg http://forum.openscenegraph.org//files/cell_100.osg ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] colours in Android OSG
Thanks Jason,
true, I was using ShapeDrawables. However, I was already working on converting
the geometries to use osg::Geometry. I have not done the cylinders yet; however
I have converted the cubes, and, unfortunately the results are exactly the
same. The code used to generate the cube geometry is pretty basic. Here it is:
Code:
osg::Geometry* CCubicPore::createCubeGeometry( const osg::Vec3 halfLengths,
const osg::Vec4 color)
{
const float xMin( -halfLengths[ 0 ] );
const float xMax( halfLengths[ 0 ] );
const float yMin( -halfLengths[ 1 ] );
const float yMax( halfLengths[ 1 ] );
const float zMin( -halfLengths[ 2 ] );
const float zMax( halfLengths[ 2 ] );
osg::Geometry* cube = new osg::Geometry();
osg::ref_ptr osg::Vec3Array vertices = osg::ref_ptr osg::Vec3Array (
new osg::Vec3Array );
osg::ref_ptr osg::Vec3Array normals = osg::ref_ptr osg::Vec3Array (
new osg::Vec3Array );
osg::ref_ptr osg::Vec4Array colors = osg::ref_ptr osg::Vec4Array (
new osg::Vec4Array );
// front face
vertices-push_back( osg::Vec3(xMin,yMin,zMax) );
vertices-push_back( osg::Vec3(xMax,yMin,zMax) );
vertices-push_back( osg::Vec3(xMax,yMax,zMax) );
vertices-push_back( osg::Vec3(xMin,yMax,zMax) );
normals-push_back( osg::Vec3( 0.0, 0.0, -1.0 ) );
// back face
vertices-push_back( osg::Vec3(xMax,yMin,zMin) );
vertices-push_back( osg::Vec3(xMin,yMin,zMin) );
vertices-push_back( osg::Vec3(xMin,yMax,zMin) );
vertices-push_back( osg::Vec3(xMax,yMax,zMin) );
normals-push_back( osg::Vec3( 0.0, 0.0, 1.0 ) );
// left
vertices-push_back( osg::Vec3(xMin,yMax,zMax) );
vertices-push_back( osg::Vec3(xMin,yMax,zMin) );
vertices-push_back( osg::Vec3(xMin,yMin,zMin) );
vertices-push_back( osg::Vec3(xMin,yMin,zMax) );
normals-push_back( osg::Vec3( -1.0, 0.0, 0.0 ) );
// right
vertices-push_back( osg::Vec3(xMax,yMax,zMin) );
vertices-push_back( osg::Vec3(xMax,yMax,zMax) );
vertices-push_back( osg::Vec3(xMax,yMin,zMax) );
vertices-push_back( osg::Vec3(xMax,yMin,zMin) );
normals-push_back( osg::Vec3( 1.0, 0.0, 0.0 ) );
// bottom
vertices-push_back( osg::Vec3(xMax,yMin,zMax) );
vertices-push_back( osg::Vec3(xMin,yMin,zMax) );
vertices-push_back( osg::Vec3(xMin,yMin,zMin) );
vertices-push_back( osg::Vec3(xMax,yMin,zMin) );
normals-push_back( osg::Vec3( 0.0, -1.0, 0.0 ) );
// top
vertices-push_back( osg::Vec3(xMax,yMax,zMax) );
vertices-push_back( osg::Vec3(xMax,yMax,zMin) );
vertices-push_back( osg::Vec3(xMin,yMax,zMin) );
vertices-push_back( osg::Vec3(xMin,yMax,zMax) );
normals-push_back( osg::Vec3( 0.0, 1.0, 0.0 ) );
cube-addPrimitiveSet( new osg::DrawArrays( osg::PrimitiveSet::QUADS, 0,
vertices-size() ) );
cube-setVertexArray( vertices );
cube-setTexCoordArray( 0, vertices );
cube-setNormalArray( normals );
cube-setNormalBinding( osg::Geometry::BIND_PER_PRIMITIVE );
colors-push_back( color );
cube-setColorArray( colors );
cube-setColorBinding( osg::Geometry::BIND_OVERALL );
return cube;
}
then I use osg::PositionAttitudeTransform to move the cubes to the correct
position.
Cheers,
Maurizio
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Re: [osg-users] colours in Android OSG
Unfortunately not. I am not getting this at all. The colour info is there, as you can see if I turn the light off, but as soon as the default headlight is turned on it all goes grey. Oh well thanks for the help anyway. Obviously this is not my thing at all! :) Cheers, Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47300#47300 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] colours in Android OSG
Thanks guys, you are helping loads. I will try that tomorrow. What about GLES2? Cheers Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47307#47307 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] colours in Android OSG
if I use osg::Material I get no colours and a warning in logcat Warning: detected OpenGL error 'invalid enumerant' at after RenderBin::draw(..) -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47311#47311 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] colours in Android OSG
Hi, this is probably a daft question, but as I am a noob to the Android-OSG combo, I hope you will be gentle. I have built the android osgAndroidExampleGiLES1 and I tried to load, one of my osg models (nothing fancy, just a bunch of cubes and cylinders). These models display perfectly in the Viewer in Linux or Windows, and the cubes and cylinders, have their right colours, with the right shades and all. However, in the Android viewer all is grey (even though the shades are fine). If I turn the light off in the Android viewer then the colours appear, but they are flat, no shades, no way to even recognise the edges of the cubes or anything at all. I am guessing it has something to do with lighting, but I cannot work out what the difference between the android viewer and the linux/windows one. Can anyone point me in the right direction? Much appreciated Thank you! Cheers, Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47272#47272 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Android GLES2 example help
Thanks for your kind reply. I have found only 2 instances of LOCAL_ARM_NEON := true one in /PlatformSpecifics/Android/Android.mk.modules.in and one in the Android.mk file of the example. I commented them out but the final result is the same. Am I missing any more of these? Any other suggestion would be welcome. thanks again. Cheers, Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=45023#45023 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Android GLES2 example help
Hi, I have been going through the Android/O,SG tutorial. I compiled OSG for Android on my Debian machine, which seems to have completed correctly and I am now trying to run the GLES2 example on my Samsung gti5500 with android gingerbread. I replaced OSG_ANDROID_DIR with the correct directory and I added the OSG includes to LOCAL_C_INCLUDES. I have also added -L/home/maurizio/android-ndk-r7/sources/cxx-stl/gnu-libstdc++/libs/armeabi to LOCAL_LD_FLAGS, in order to avoid a linker errors. Both the C++ and Java part of the example seem to compile without errors, but when I try to run the app on my phone it force closes and the log is Code: 01-21 17:36:38.784: D/libEGL(9462): loaded /system/lib/egl/libGLES_android.so 01-21 17:36:38.964: D/libEGL(9462): loaded /system/lib/egl/libEGL_adreno200.so 01-21 17:36:39.134: D/libEGL(9462): loaded /system/lib/egl/libGLESv1_CM_adreno200.so 01-21 17:36:39.134: D/libEGL(9462): loaded /system/lib/egl/libGLESv2_adreno200.so 01-21 17:36:39.154: W/EGLview(9462): creating OpenGL ES 2.0 context 01-21 17:36:39.384: D/dalvikvm(9462): Trying to load lib /mnt/asec/osg.AndroidExample-2/lib/libosgNativeLib.so 0x40518a70 01-21 17:36:40.294: W/dalvikvm(9462): Exception Ljava/lang/UnsatisfiedLinkError; thrown while initializing Losg/AndroidExample/osgNativeLib; 01-21 17:36:40.514: W/dalvikvm(9462): threadid=9: thread exiting with uncaught exception (group=0x40018560) 01-21 17:36:40.674: E/AndroidRuntime(9462): FATAL EXCEPTION: GLThread 10 01-21 17:36:40.674: E/AndroidRuntime(9462): java.lang.ExceptionInInitializerError 01-21 17:36:40.674: E/AndroidRuntime(9462): at osg.AndroidExample.EGLview$Renderer.onSurfaceChanged(EGLview.java:319) 01-21 17:36:40.674: E/AndroidRuntime(9462): at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1357) 01-21 17:36:40.674: E/AndroidRuntime(9462): at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1119) 01-21 17:36:40.674: E/AndroidRuntime(9462): Caused by: java.lang.UnsatisfiedLinkError: Cannot load library: reloc_library[1311]: 5394 cannot locate '_ZTv0_n12_NSt19basic_istringstreamIcSt11char_traitsIcESaIcEED1Ev'... 01-21 17:36:40.674: E/AndroidRuntime(9462): at java.lang.Runtime.loadLibrary(Runtime.java:434) 01-21 17:36:40.674: E/AndroidRuntime(9462): at java.lang.System.loadLibrary(System.java:554) 01-21 17:36:40.674: E/AndroidRuntime(9462): at osg.AndroidExample.osgNativeLib.clinit(osgNativeLib.java:6) 01-21 17:36:40.674: E/AndroidRuntime(9462): ... 3 more The learning curve of this is actually pretty steep, and I am not sure what am I doing wrong and I would really appreciate any help or pointers in the right direction. Thank you! Cheers, Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=44958#44958 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] [osgPlugins] collada export
Hi all, I was trying to find a way to export my model created with OSG so that I can play with it in Blender. The only solution at the moment seems the Collada plugin. So I compiled collada-dom 2.2, then I tried 2.1, and I even found some Ubuntu pre-compiled collada-dom/libminizip installers, and then I recompiled OSG 2.8.2 in turn with each of these versions of collada-dom. Results with all of them is that I can open .dae files with osgviewer, which makes me believe that the plugin is installed and working correctly. However if I add osgDB::writeNodeFile( *root, file.osg ) to the code that generates my model, this results in the complete model which i can then view with osgviewer; if I add osgDB::writeNodeFile( *root, file.dae ) the resulting .dae file is very small (few kBytes, against the 3 or 4 Mbytes of the .osg file) and when I open it with osgviewer, there is nothing there. Am I missing something obvious here? Same happens if i try to convert the .osg file to .dae using os gconv. Would there be anyone so kind to use a working version of osgconv on a .osg file in order to convert it to .dae for me? It would be very much appreciated Thank you! Cheers, Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=18999#18999 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] recent update-texture issue
some more info: the texture is generated with:
Code:
osg::TextureCubeMap* generateTexture()
{
// 2D image texture
osg::TextureCubeMap* texture = new osg::TextureCubeMap;
// load images
osg::Image* frontTextureImage =
osgDB::readImageFile(./texture/frontLarge.png);
osg::Image* backTextureImage =
osgDB::readImageFile(./texture/backLarge.png);
osg::Image* leftTextureImage =
osgDB::readImageFile(./texture/leftLarge.png);
osg::Image* rightTextureImage =
osgDB::readImageFile(./texture/rightLarge.png);
osg::Image* topTextureImage =
osgDB::readImageFile(./texture/topLarge.png);
osg::Image* bottomTextureImage =
osgDB::readImageFile(./texture/bottomLarge.png);
// Assign the texture to the imagesread from file:
texture-setImage(osg::TextureCubeMap::POSITIVE_X,leftTextureImage);
texture-setImage(osg::TextureCubeMap::NEGATIVE_X,rightTextureImage);//swapped
left and right to be consistent with OSG's throats orientation
texture-setImage(osg::TextureCubeMap::POSITIVE_Y,backTextureImage);
texture-setImage(osg::TextureCubeMap::NEGATIVE_Y,frontTextureImage);
texture-setImage(osg::TextureCubeMap::POSITIVE_Z,topTextureImage);
texture-setImage(osg::TextureCubeMap::NEGATIVE_Z,bottomTextureImage);
return texture;
}
and in the main I have:
Code:
osg::TexGen *tg = new osg::TexGen;
tg-setMode(osg::TexGen::OBJECT_LINEAR);
// Create a StateSet with default settings:
osg::StateSet* stateOne = new osg::StateSet();
stateOne-setTextureAttributeAndModes(0,generateTexture(),osg::StateAttribute::ON);
stateOne-setTextureAttributeAndModes(0, tg, osg::StateAttribute::OVERRIDE
| osg::StateAttribute::ON);
Can anyone suggest why would this stop working properly after the update?
Cheers,
Maurizio.
PS the frontLarge.png does not display correctly in the forum preview.
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Re: [osg-users] how to improve frame rate of my scene with lots of cubes and cylinders?
Hi, Should this be done within VertexShader using GLSL? I tried to create a light following the osglight example, but it did not make any difference. Cheers, Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=18417#18417 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] how to improve frame rate of my scene with lots of cubes and cylinders?
Hi, Thanks Peter for your very helpful reply. I have sorted that issue thank to your pointers. Now I have only one more question then I promise I won't bother you anymore. It seems that when I generate my model using the simple geometries I created and using VertexShader, the resulting cube, for example, has a very flat uniform colour, where it is impossible to distinguish the various faces. This does not happen when using the shapeDrawable cube or cylinder and so on. Would any of you mind pointing me in the right direction of how to resolve this? Thank you! Cheers, Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=18364#18364 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] how to improve frame rate of my scene with lots of cubes and cylinders?
Hi all, Finally I found some time to play with this. Thanks to your words of wisdom, I have decided to create my cylinder geometry. I used the drawinstanced example as a template and I managed to generate the cylinders, translate them and rotate them as I want. However I notice that when I get closer to these cylinders, they disappear, while ojects created using ShapeDrawable do not disappear. I do not know anything about GLSL (or OpenGL or OpenSceneGraph for that matter) and I was wondering if anyone could tell me why this is happening, if there is a way to fix it and if that would affect performance. Thank you very much! Cheers, Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=18248#18248 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] how to improve frame rate of my scene with lots of cubes and cylinders?
Thanks for your replies!! I have been reading through this forum and googled a lot and it seems the best solution for my problem would be to create a simplified cylinder geometry (which I have done), divide all the cylinders into bins (by diameter, as they will have all the same length), and use geometry instancing to create several instances of the representative cylinder for each bin, translatated and rotated so that they would appear in the correct position in the scene. Would this sound sensible to you? Unfortunately this is were the learning curve gets a little steep though. I cannot seem to figure out how to use geometry instancing just by reading the drawinstanced example. Is there any tutorial around? or any other examples that would be helpful. Thanks again, Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=17786#17786 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Quad buffer stereo issue
Hi, Just an update. I was looking for a stereo VRML viewer and I found White Dune. Well the strange thing is that when I start White Dune with the stereo mode enabled, then also osgviewer works perfectly without flickering of the image between the left and right picture. As soon as I close WhiteDune then osgviewer goes back to the strange behaviour described in the previous post. Is there anyone who can make sense out of this? Thank you for your help! Cheers, Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=17098#17098 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] [osgPlugins] can't compile VRML plugin
Hi, I was following the tutorial here (http://www.openscenegraph.org/projects/osg/wiki/Support/PlatformSpecifics/VisualStudio/VisualStudioPlugins) I compiled OpenVRML without any issue. but when it comes to using CMake on the VRML plugin I downloaded here (http://www.openscenegraph.org/projects/osg/browser/OpenSceneGraph/trunk/src/osgPlugins/vrml?rev=8591) the tutorial stops making sense..I cannot find where I should be specifying the ...\OpenVRML\home-built\include directory in OPENVRML_INCLUDE_DIR and ...\OpenVRML\home-built\lib\openvrml.lib library in OPENVRML_LIBRARY. . When I generate I end up with an VC++ solution that does not include any of the original source files, and as such when I compile it with VC++ (2005) the compilation is skipped (as there is nothing to compile). I apologise if these are stupid issues but I am new to OSG and to CMake as well. Thank you! Cheers, Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=17102#17102 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Quad buffer stereo issue
Hi, I am completely new to OpenSceneGraph and I bumped into this issue that I hope you may be able to help me with. I have installed from binaries on our quad core vista 64 bit computer with Nvidia Quadro FX4600 graphic card. I tested with Code: osgviewer cow.osg and all works as it should. However, my aim is to display VRML files using a stereoscopic system by Planar. Well, when I try Code: osgviewer cow.osg --stereo QUAD_BUFFER the top screen works fine but the bottom screen seems to be displaying both the left and right images switching very quickly between the 2. It actually worked perfectly once, when it also gave me this warning message (which never appeared when it was not working right): Code: Warning:GraphicsWindowWin32::grabFocus() Failed grabbing the focus Am I missing something obvious? Thank you in advance for your help! Cheers, Maurizio -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=16973#16973 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
