[osg-users] Dilemma with the usage of object Shaders in differend views ...
Hi folks, actually i am working on object shading with OSG (i.e. Dot3). All works fine with single views. Now i am using the osgViewer::Composite viewer and getting some dielemma with the usage of object based shaders in differend views based on the same scene graph. I.e.: I've a single scene node with an object X where i bind the shaders (at the object StateSet) for execution. In a single view no problem. If i use this scene in multiple views (i.e. A, B) i've the dilemma, that i've to use diffrend shader params on the same shader instance. In each rendering pass the params of the camera are differend from the point of view of the views, if the views are rendered. But the shader has no knowledge about this, it uses only a single uniform to hook bind param ... I've thought about the following sollutions: 1. Using for each view a single shader instance at the same object StateSet. Is this usefull? If the scene is complex i could get a huge count of shaders which have to be executed. Additionally i'm not sure, if the binding of the unused shaders produces render artifacts or perfomance issues... 2. Using a callback mechanism which switches this values at the shader before rendering How i could achieve this aim in best way? Has anyone a better solution? Best regards, Christian ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] nVidia card textures memory
I currently don't have the hardware to deal with it, so it was more a theoretical question. Moreover, the second card doesn't have to be a graphics card, so PBO has no meaning for it. Anyway, since I know nothing about PBOs, I'll try to dig into it a little, and if they are easier to map to PCIE address, I'll share this knowledge. Same if one day I'll use multiple graphics card. Thanks again, Guy. From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Osfield Sent: Monday, April 07, 2008 6:16 PM To: OpenSceneGraph Users Subject: Re: [osg-users] nVidia card textures memory Hi Guy, I don't know of any extensions for mapping/copying memory from one card to another directly. NVidia will have such code in their drivers, but its something that is hidden from the OpenGL. However, there are still OpenGL features that can help out a little. First up Frame Buffer Objects are perfect for capturing images, the OSG has full support for FBO's and its pretty straight forward to use just by setting a single line in osg::Camera. See osgdistortion or osgprerender examples. Next up to copy the data from one card to another you'll need to do a read pixels, which ordinarily is pretty slow, so here it'd be best to use Pixel Buffer Objects , agaiin its something the OSG supports, but so far I've only ever used it for sending imagery to a graphics card. You will also need a second PBO to get the data to the second card. I'm afraid there isn't an OSG example showing how to do this part so you are one your own. If you get it all working then it'd be a nice OSG example to have is you fancy contributing the final solution back. Robert. On Mon, Apr 7, 2008 at 3:20 PM, Guy [EMAIL PROTECTED] wrote: Hello, First I know my question has nothing to do with OSG, but a lot of OSG users might come across this subject and any guidance would be most appreciated. The questions I ask regard the nVidia textures memory and how to access it. 1. I'd like to pass data from nVidia texture memory to other card, on the PCI-Express bus. Is it possible and how to get Texture memory address and to map it to PCIE address? Or if there is a possibility to make the card render to memory address which is already mapped to PCIE address? 2. I'd like to run some image processing code on the whole screen (no matter what applications are running on and what they display). For that matter, I need to get the screen image, run my algorithm and display the result full screen. The problems with that are: 2.1 After one frame that *I* draw, the next time I'll get the screen image it might include changes *I* have done to the data. 2.2 Getting the screen data is slow. So the more complicate way to do it is to make all the applications running, draw to an off-screen memory buffer, process that buffer and display it. Or plug-in image processing code, somewhere on the card, after the driver drawing call functions and before the data it presented on screen. My questions are: 1. Is it possible to access the display buffer data on the nVidia card just before it is displayed on screen? (plug-in my code) 2. Would setting the apps drawing to n'th nVidia virtual desktop to that trick? And then again, does the nVidia card has address of memory buffer for each n'th virtual desktop? Thanks, Guy. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] HDR with osg
Hi guys!
I try to implement HDR. And I got some problem when I compute average
luminance
I have to render it to 1X1 texture and here is the main problem
When I setup viewport with setVewport(0,0,1,1) - I've got clearcolor i.e.
(1,0,0,0)
When I setup viewport with setVewport(0,0,2,2) - I've got average luminance
- but here I've got 2X2 texture but I need 1X1 texture
What should I do?
Here is my source (luminance2 texture has size of 4X4)
osg::ref_ptrosg::Texture2D finalluminance = new osg::Texture2D;
finalluminance-setTextureSize( 2, 2);
finalluminance-setInternalFormat(GL_RGBA16F_ARB);
finalluminance-setSourceFormat(GL_RGBA);
finalluminance-setSourceType(GL_FLOAT);
finalluminance-setFilter(osg::Texture2D::MIN_FILTER,osg::Texture2D::LINEAR)
;
finalluminance-setFilter(osg::Texture2D::MAG_FILTER,osg::Texture2D::LINEAR)
;
finalluminance-setWrap(osg::Texture::WRAP_S,
osg::Texture::CLAMP);
finalluminance-setWrap(osg::Texture::WRAP_T,
osg::Texture::CLAMP);
osg::ref_ptrosg::Camera luminance3Camera = new osg::Camera;
osg::ref_ptrosg::Geode geode = new osg::Geode;
osg::ref_ptrosg::Geometry geom
=osg::createTexturedQuadGeometry(osg::Vec3(0,0,-1),osg::Vec3(1.0,0.0,-1.0),o
sg::Vec3(0.0,1.0,-1.0));
geom-getOrCreateStateSet()-setMode(GL_LIGHTING,osg::StateAttribute::OFF);
geode-addDrawable(geom.get());
luminance3Camera-setName(luminance3);
luminance3Camera-setClearColor(osg::Vec4f(1.0f,0.0f,0.0f,1.0f));
luminance3Camera-setProjectionMatrix(osg::Matrix::ortho2D(0,1,0,1));
luminance3Camera-setReferenceFrame(osg::Transform::ABSOLUTE_RF);
luminance3Camera-setViewMatrix(osg::Matrix::identity());
luminance3Camera-setViewport(0,0,2,2);
luminance3Camera-setRenderOrder(osg::Camera::POST_RENDER,13);
luminance3Camera-setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OB
JECT);
luminance3Camera-attach(osg::Camera::COLOR_BUFFER,finalluminance.get());
luminance3Camera-addChild(geode.get());
osg::ref_ptrosg::StateSet luminance3stateset
=luminance3Camera-getOrCreateStateSet();
luminance3stateset-setTextureAttributeAndModes(0,luminance2.get(),osg::Stat
eAttribute::ON);
luminance3stateset-setAttribute(clamp,
osg::StateAttribute::ON);
root-addChild(luminance3Camera.get());
osg::Program* luminance3prg = new osg::Program;
luminance3stateset-setAttribute(luminance3prg);
luminance3prg-addShader(osg::Shader::readShaderFile(osg::Shader::VERTEX,
osgDB::findDataFile(Shaders/downLumExp_vp.glsl)));
luminance3prg-addShader(osg::Shader::readShaderFile(osg::Shader::FRAGMENT,
osgDB::findDataFile(Shaders/downLumExp.glsl)));
osg::Uniform* DownSampler = new
osg::Uniform(DownSampler,0);
luminance3stateset-addUniform(DownSampler);
here is downLumExp.glsl
/*FRAGMENT_SHADER*/
uniform sampler2D DownSampler;
const vec2 samples[16]={
-0.375, -0.375, -0.125, -0.375, 0.125, -0.375, 0.375, -0.375, -0.375,
-0.125, -0.125, -0.125, 0.125, -0.125, 0.375, -0.125, -0.375, 0.125, -0.125,
0.125, 0.125, 0.125, 0.375, 0.125, -0.375, 0.375, -0.125, 0.375, 0.125,
0.375, 0.375, 0.375
};
void main(void)
{
float lum = 0.0;
float maximum = 0.0;
vec4 color;
vec2 sample;
for(int i = 0; i 16; i++)
{
sample = vec2(samples[i].x,samples[i].y);
color = texture2D(DownSampler, gl_TexCoord[0].xy + sample);
maximum = max( maximum, color.g );
lum += color.r;
}
lum *= 0.0625;
lum = exp(lum);
gl_FragColor = vec4(lum, maximum, 0.0, 1.0);
}
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] META_Object definition
Hi all, I've started to inherit from some of the core osg classes to modify their functionality and I noticed the use of this META_Object definition in headers. Now I traced this back to its definition in osg::Object and I just wanted to clarify its use. To give a bit of background I am currently inheriting from osgParticle::ParticleSystem in order to override it's update function. Am I right in thinking that the META_Object call is just a convenience definition that define the set of copy operations? If so, does it need to be included in the classes I create that inherit from the osg library? Regards to you all, Kim. * To view the terms under which this email is distributed, please go to http://www.hull.ac.uk/legal/email_disclaimer.html *___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] why arent the .h postfix used in openscenegraph?
It seems that the header files in C++ standard do not need the .h postfix. In VS.NET 2005, you can open menu Tools-Options-Text Editor-File Extension, and choose the checkbox at right-bottom to solve this problem. Good luck, Bo Jiang - Original Message - From: [EMAIL PROTECTED] To: osg-users@lists.openscenegraph.org Sent: Tuesday, April 08, 2008 7:54 PM Subject: [osg-users] why arent the .h postfix used in openscenegraph? why arent the .h postfix used in openscenegraph? Because of this i get no syntax highlighting in visual studio.net ERlend -- ___ 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] Problem with readPixels
Hi,
Thank you for this quick answer.
I found two ways to do what I wanted :
-by adding the following line before the rendering loop (
while(!viewer-done())...):
viewer-getCamera()-attach(osg::Camera::COLOR_BUFFER, image);
So image is filled by a thread which has the graphics context current
Then the image is stored after the command viewer-frame() by using the
function osgDB::writeImageFile(...).
-by using the method setPostDrawCallback which is necessary if we want to
modify the rendered image before the storage.
Thanks a lot.
Jean-Baptiste
2008/4/1, Robert Osfield [EMAIL PROTECTED]:
Hi Jean-Baptiste,
The most likely cause of the OpenGL error is that your code that is
calling glReadPixels doesn't have the graphics context current. You
have to call OpenGL from the thread that has the graphics context
current. The easist way to do his is to attach a Camera post draw
callback, this will be called from the appropriate graphics threads.
If you are using 2.3.x or SVN then use Camera final draw calback as
it's called later in the draw pipeline.
Robert.
On Tue, Apr 1, 2008 at 6:47 PM, Jean-Baptiste Authesserre
[EMAIL PROTECTED] wrote:
Hi everyone,
I am trying to get screenshots of a generated scene with OSG. In order
to do
that I am using the method readPixels of the class osg::image. But it
seems
that the function glReadPixels used by readPixels fails. Here is a part
of
the code:
//start the rendering
float * depthBufferRaw;
osg::Image * depthBuffer= new osg::Image();
unsigned char * tmp;
int height=1280;
int width=1024;
int i;
depthBufferRaw = (float *) calloc(height*width, sizeof(float));
while(!viewer-done())
{
viewer-frame();
//Get values of the color buffer
depthBuffer-readPixels(0,0,width,height,
GL_LUMINANCE,GL_UNSIGNED_BYTE);
tmp = depthBuffer-data();
for (i=0; iheight*width; i++)
depthBufferRaw[i]=(float) tmp[i];
//save as image
...
}
With the above code, i get an array (depthBufferRaw) with constant
values
whereas i see on my screen a scene with different objects and colors.
Thanks
to debug mode of VS2003, i can verify that depthBuffer-_data has been
allocated.
The source code of the osg::image method readPixels is the following:
void Image::readPixels(int x,int y,int width,int height,GLenum
format,GLenum
type)
{
allocateImage(width,height,1,format,type);
glPixelStorei(GL_PACK_ALIGNMENT,_packing);
glReadPixels(x,y,width,height,format,type,_data);
}
So, it seems that glReadPixels failed. I tried to show this by using
directly glReadPixels in my implementation with glGetError.
Strangely glGetError returns the value 1282 (GL_INVALID_OPERATION)
whatever the position of the call to this function in my code. And when
i
tried to use this function in a loop as :
while (errCode != GL_NO_ERROR)
errCode = glGetError();
I obtain an infinite loop.
My questions are the following:
-Is that possible to use glGetError with OSG?
-Has anybody an idea of why the method readPixels fails in this case?
Thanks in advance!
Jean-Baptiste
___
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
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] why arent the .h postfix used in openscenegraph?
Hi ERlend, why arent the .h postfix used in openscenegraph? Because of this i get no syntax highlighting in visual studio.net This is a philosophical choice, the motivations of which have been discussed to death so please search the archives. To get syntax highlighting on the headers, see http://www.openscenegraph.org/projects/osg/wiki/Support/PlatformSpecifics/VisualStudio Near the end of the page there is a section Extensionless headers and syntax highlighting on Visual Studio 7, 8 or 9. (just updated to remove references to the .reg files, which we don't distribute anymore) To quote: Go to Tools-Options, then Text Editor-File Extension, check Map Extensionless Files To at the bottom and select Microsoft Visual C++ in the list to the right. There is also a text file called VisualStudio_Syntax_Highlighting.txt in the PlatformSpecifics\Windows directory of the OSG distribution that says basically the same thing. Hope this helps, J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] http://www.cm-labs.com/ http://whitestar02.webhop.org/ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Two separated subgraphs, 2nd trial
Hi Oliver, On Tue, Apr 8, 2008 at 1:13 PM, Oliver Kutter [EMAIL PROTECTED] wrote: Hi, isn't there anybody, who can answer my question (see below)? I've just re-read you post and can't think of anything to say - as I really don't know what specifically is amiss. I'd guess others don't know either. Try providing a screen shot to tell us what looks wrong then we might be able to help you. Robert. regards Oliver Oliver Kutter schrieb: Hi guys, I have a question concerning the openscenegraph example osghud. I have a similar scene like this example except that I don't want to display hud text. Instead I want to render some small coordinate system axes like the ones in 3d studio max in the left bottom corner. I still use openscenegraph 1.2, but I think this is not important for my problem. Now my graph looks like this: I have a sceneview with a camera, a root node and the main scene as a child of the root node. Now I constructed my stuff like the osghud example: I added a new camera to the root node as a new subgraph and then I added my coordinates system axes model as a child to that camera so that the axes and the main scene are not connected. I set up the viewport of that camera (2nd viewport) to the left bottom corner with size (100,100) similar to 3d studio max. Finally, my axes are displayed in the 2nd viewport, but not in the main scene. That is correct so far. Now my problem is that not only the axes but also the main scene is displayed in the 2nd viewport. This shouldn't be like that because the main scene is not a child of the 2nd camera. What am I doing wrong? These are my parameters which I set to the camera: osg::ref_ptrosg::Node _axes = osgDB::readNodeFile(../data/osg/coordinate_axes.osg); _camera-setProjectionMatrix(osg::Matrix::perspective(50.0, 1, 0.1, 1.0)); _camera-setViewport(0,0,100,100); _camera-setReferenceFrame(osg::Transform::ABSOLUTE_RF); _camera-setRenderOrder(osg::CameraNode::POST_RENDER); _camera-setClearMask(GL_DEPTH_BUFFER_BIT); _camera-addChild(_axes.get()); _root-addChild(_camera.get()); best regards, Oliver -- ___ osg-users mailing [EMAIL PROTECTED]://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 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Glenum pixelFormat
Hi All, I'm trying to make a osg::Image, but in allocateImage(...) and setImage(...) I need : Pixel format, Internal texture format, AllocationMode... But I didn't find any possible values ?! Where can I find it ? thanks Regards, Vincent. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Is it possible to extend OSG to support CGFX?
Hi Robert, Many thanks! I've found the link that answers my question. If anybody is interested take a look at: http://ati.amd.com/developer/rendermonkey/features.html#COLLADA_OpenGL_Effe cts http://ati.amd.com/developer/rendermonkey/features.html#COLLADA_OpenGL_Effec ts -Jerome Date: Mon, 7 Apr 2008 17:08:47 +0100 From: Robert Osfield [EMAIL PROTECTED] Subject: Re: [osg-users] Is it possible to extend OSG to support CGFX ? To: OpenSceneGraph Users osg-users@lists.openscenegraph.org Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=iso-8859-1 Hi Jerome, You'll need to extend the OSG to do this, but the OSG is designed to be extensible so this needn't be a show stopper. Avenues of investigation would be to look at osgNV project and the effects support in Collada. AMD/ATI recently release a viewer that renders effects RenderMonkey via COLLADA as well. Robert. On Mon, Apr 7, 2008 at 4:49 PM, Jerome Hummel mailto:[EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Hi, I am currently evaluating OSG and am new to it so I apologize in advance if my question has a straightforward answer. I could not find any answer in the osg archives. It seems osg currently support glsl shader but I would like to represent fixed function graphics state also in addition to shader parameters (just like cgfx does). So basically a simple converter to glsl wouldn't do the trick. I would like to be able to apply a CGFX shader (or DX FX Shader) on an osg scene. osgFX seems to add support for effects and techniques. Would this nodekit be the answer to my question ? How easy is it to add support for a new file format. Would I need to create a new node kit ? Thanks in advance, Regards, Jerome ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Shader question concerning GL_LIGHTING etc.
Hi Yefei, Am I really reduced to modifying the core of OSG to add uniforms and set their values whenever a relevant GL call is being made? To add to what Mike and Leif said, you don't have to modify OSG. You could just write a visitor that does what you want, i.e. traverse the graph, checking for the state you need to set uniforms for, and then applying them. The same visitor could accumulate state from the root and when reaching a leaf node (geode), apply the right shader for the accumulated state. With a bit of work you can get a solution that's pretty general and works well, and which is also pretty optimal. Hope this helps, J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] http://www.cm-labs.com/ http://whitestar02.webhop.org/ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] why arent the .h postfix used in openscenegraph?
On Tue, Apr 8, 2008 at 12:54 PM, [EMAIL PROTECTED] wrote: why arent the .h postfix used in openscenegraph? Because of this i get no syntax highlighting in visual studio.net The OpenSceneGraph is written in C++ rather than C so it uses Standard C++ style headers rather than C style headers. I believe you can enable syntax high lighting in VS from the GUI, have a look through the archives for details. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] why arent the .h postfix used in openscenegraph?
I figured out the syntax bit but arent .h c++ standard for include files?? From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Osfield Sent: 8. april 2008 14:44 To: OpenSceneGraph Users Subject: Re: [osg-users] why arent the .h postfix used in openscenegraph? On Tue, Apr 8, 2008 at 12:54 PM, [EMAIL PROTECTED]mailto:[EMAIL PROTECTED] wrote: why arent the .h postfix used in openscenegraph? Because of this i get no syntax highlighting in visual studio.nethttp://studio.net The OpenSceneGraph is written in C++ rather than C so it uses Standard C++ style headers rather than C style headers. I believe you can enable syntax high lighting in VS from the GUI, have a look through the archives for details. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] error while loading .3ds file
Hi, My problem is that when i try to load a 3ds file, i get the following message : could not find plugin to read object from file ...3ds I don't think that this is an error of coding because it worked with previous versions, visual studio said that it loaded the osgdb_3dsd.dll file. can you tell me where to search ? _ Avec Hotmail, vos e-mails vous suivent partout ! Mettez Hotmail sur votre mobile ! http://www.messengersurvotremobile.com/?d=hotmail___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] HDR with osg
Hi,
Roman Grigoriev wrote:
Hi guys!
I try to implement HDR. And I got some problem when I compute average
luminance
I have to render it to 1X1 texture and here is the main problem
When I setup viewport with setVewport(0,0,1,1) – I’ve got clearcolor
i.e. (1,0,0,0)
Is this for a 1x1 target, or for your 2x2 target? I guess your shader is
not executed at all. What are you doing in the vertex shader? I have not
tried 1x1 textures myself.
When I setup viewport with setVewport(0,0,2,2) - I’ve got average
luminance – but here I’ve got 2X2 texture but I need 1X1 texture
At some texture size (search gpgpu.org or experiment) it becomes faster
to copy the texture to CPU and do final calculation there.
What should I do?
Debug more :) See if your shader is executed for 1x1 case at all. Turn
on more OSG (see OSG_NOTIFY_LEVEL) messages to see if there are not
other problems, e.g. non-power of two texture resampling. Try texture
rectangles...
jp
Here is my source (luminance2 texture has size of 4X4)
osg::ref_ptrosg::Texture2D finalluminance = new osg::Texture2D;
finalluminance-setTextureSize( 2, 2);
finalluminance-setInternalFormat(GL_RGBA16F_ARB);
finalluminance-setSourceFormat(GL_RGBA);
finalluminance-setSourceType(GL_FLOAT);
finalluminance-setFilter(osg::Texture2D::MIN_FILTER,osg::Texture2D::LINEAR);
finalluminance-setFilter(osg::Texture2D::MAG_FILTER,osg::Texture2D::LINEAR);
finalluminance-setWrap(osg::Texture::WRAP_S,
osg::Texture::CLAMP);
finalluminance-setWrap(osg::Texture::WRAP_T,
osg::Texture::CLAMP);
osg::ref_ptrosg::Camera luminance3Camera = new osg::Camera;
osg::ref_ptrosg::Geode geode = new osg::Geode;
osg::ref_ptrosg::Geometry geom
=osg::createTexturedQuadGeometry(osg::Vec3(0,0,-1),osg::Vec3(1.0,0.0,-1.0),osg::Vec3(0.0,1.0,-1.0));
geom-getOrCreateStateSet()-setMode(GL_LIGHTING,osg::StateAttribute::OFF);
geode-addDrawable(geom.get());
luminance3Camera-setName(luminance3);
luminance3Camera-setClearColor(osg::Vec4f(1.0f,0.0f,0.0f,1.0f));
luminance3Camera-setProjectionMatrix(osg::Matrix::ortho2D(0,1,0,1));
luminance3Camera-setReferenceFrame(osg::Transform::ABSOLUTE_RF);
luminance3Camera-setViewMatrix(osg::Matrix::identity());
luminance3Camera-setViewport(0,0,2,2);
luminance3Camera-setRenderOrder(osg::Camera::POST_RENDER,13);
luminance3Camera-setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OBJECT);
luminance3Camera-attach(osg::Camera::COLOR_BUFFER,finalluminance.get());
luminance3Camera-addChild(geode.get());
osg::ref_ptrosg::StateSet luminance3stateset
=luminance3Camera-getOrCreateStateSet();
luminance3stateset-setTextureAttributeAndModes(0,luminance2.get(),osg::StateAttribute::ON);
luminance3stateset-setAttribute(clamp,
osg::StateAttribute::ON);
root-addChild(luminance3Camera.get());
osg::Program* luminance3prg = new osg::Program;
luminance3stateset-setAttribute(luminance3prg);
luminance3prg-addShader(osg::Shader::readShaderFile(osg::Shader::VERTEX,
osgDB::findDataFile(Shaders/downLumExp_vp.glsl)));
luminance3prg-addShader(osg::Shader::readShaderFile(osg::Shader::FRAGMENT,
osgDB::findDataFile(Shaders/downLumExp.glsl)));
osg::Uniform* DownSampler = new
osg::Uniform(DownSampler,0);
luminance3stateset-addUniform(DownSampler);
here is downLumExp.glsl
/*FRAGMENT_SHADER*/
uniform sampler2D DownSampler;
const vec2 samples[16]={
-0.375, -0.375, -0.125, -0.375, 0.125, -0.375, 0.375, -0.375, -0.375,
-0.125, -0.125, -0.125, 0.125, -0.125, 0.375, -0.125, -0.375, 0.125,
-0.125, 0.125, 0.125, 0.125, 0.375, 0.125, -0.375, 0.375, -0.125, 0.375,
0.125, 0.375, 0.375, 0.375
};
void main(void)
{
float lum = 0.0;
float maximum = 0.0;
vec4 color;
vec2 sample;
for(int i = 0; i 16; i++)
{
sample = vec2(samples[i].x,samples[i].y);
color = texture2D(DownSampler, gl_TexCoord[0].xy +
sample);
maximum = max( maximum, color.g );
lum += color.r;
}
lum *= 0.0625;
lum = exp(lum);
gl_FragColor = vec4(lum, maximum, 0.0, 1.0);
}
Re: [osg-users] Glenum pixelFormat
Hi Vincent, The format values are OpenGL enums. For examples have a look at the plugins that load osg::Images. Robert. On Tue, Apr 8, 2008 at 1:54 PM, Vincent Bourdier [EMAIL PROTECTED] wrote: Hi All, I'm trying to make a osg::Image, but in allocateImage(...) and setImage(...) I need : Pixel format, Internal texture format, AllocationMode... But I didn't find any possible values ?! Where can I find it ? thanks Regards, Vincent. ___ 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] why arent the .h postfix used in openscenegraph?
On Tue, Apr 8, 2008 at 1:47 PM, [EMAIL PROTECTED] wrote: I figured out the syntax bit but arent .h c++ standard for include files?? Have you come across the Standard C++ headers at all yet? .h are standard for C, but not C++. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] why arent the .h postfix used in openscenegraph?
Hi, I figured out the syntax bit but arent .h c++ standard for include files?? #include iostream #include string #include vector #include osg/Geode You can still use .h (I do, as do most others) but OSG elected to go the same route as the Standard C++ Library. See The C++ Programming Language by Bjarne Stroustrup for details. J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] http://www.cm-labs.com/ http://whitestar02.webhop.org/ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Quicktime plugin live streaming documentation/examples
Hi any demo / example ? regards 2008/4/3, Mike Greene [EMAIL PROTECTED]: Colin, Success! Using the later version of VDIG that you referenced, I was able to get a live stream to work with osgmovie. I'm using a KOCOM camera running video through a Canopus ADVC 110 A/D video convertor into a firewire cable. This is on Windows XP, OSG 2.3.5, Visual Studio 2005 debug, Quicktime SDK 7.3. Mike Greene ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Adrian Egli ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] why arent the .h postfix used in openscenegraph?
Allright.. I didn't know that was the standard, allways used and seen .h used. :) Thanks for your answer. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jean-Sébastien Guay Sent: 8. april 2008 15:19 To: OpenSceneGraph Users Subject: Re: [osg-users] why arent the .h postfix used in openscenegraph? Hi, I figured out the syntax bit but arent .h c++ standard for include files?? #include iostream #include string #include vector #include osg/Geode You can still use .h (I do, as do most others) but OSG elected to go the same route as the Standard C++ Library. See The C++ Programming Language by Bjarne Stroustrup for details. J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] http://www.cm-labs.com/ http://whitestar02.webhop.org/ ___ 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] Two separated subgraphs, 2nd trial
Hi, ok, I made some screenshots, which I will explain in detail. First I show you the structure of the graph. This is how I set up the graph: http://getwww.uni-paderborn.de/~kutter/structure.jpg http://getwww.uni-paderborn.de/%7Ekutter/structure.jpg As you can see, the camera and the coordinate system axes are in a 2nd subgraph. Now, some screenshot from the application: First, what you see in the main window is our lab with a robot at (0,0,0). The small viewport bottom left is the view from the 2nd camera. http://getwww.uni-paderborn.de/~kutter/scene1.jpg http://getwww.uni-paderborn.de/%7Ekutter/scene1.jpg As you can see in the next image, the coordinate system axes, which are a child of the 2nd camera, are not shown in the main viewport but in the viewport of the 2nd camera. But the main scene (lab with robot) is also shown in the 2nd viewport. I don't know why. http://getwww.uni-paderborn.de/~kutter/scene2.jpg http://getwww.uni-paderborn.de/%7Ekutter/scene2.jpg I used GL_DEPTH_BUFFER_BIT to ensure that the background of the 2nd viewport is not visible, so that the main scene is visible through the 2nd viewport, as you can see here. http://getwww.uni-paderborn.de/~kutter/scene3.jpg http://getwww.uni-paderborn.de/%7Ekutter/scene3.jpg Now I want only the coordinate system axes to be shown in the 2nd viewport. I hope you can help me now. And I hope you can see the images. regards, Oliver http://getwww.uni-paderborn.de/%7Ekutter/scene1.jpg http://getwww.uni-paderborn.de/%7Ekutter/scene2.jpg http://getwww.uni-paderborn.de/%7Ekutter/scene3.jpg http://getwww.uni-paderborn.de/%7Ekutter/structure.jpg Robert Osfield schrieb: Hi Oliver, On Tue, Apr 8, 2008 at 1:13 PM, Oliver Kutter [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: Hi, isn't there anybody, who can answer my question (see below)? I've just re-read you post and can't think of anything to say - as I really don't know what specifically is amiss. I'd guess others don't know either. Try providing a screen shot to tell us what looks wrong then we might be able to help you. Robert. regards Oliver Oliver Kutter schrieb: Hi guys, I have a question concerning the openscenegraph example osghud. I have a similar scene like this example except that I don't want to display hud text. Instead I want to render some small coordinate system axes like the ones in 3d studio max in the left bottom corner. I still use openscenegraph 1.2, but I think this is not important for my problem. Now my graph looks like this: I have a sceneview with a camera, a root node and the main scene as a child of the root node. Now I constructed my stuff like the osghud example: I added a new camera to the root node as a new subgraph and then I added my coordinates system axes model as a child to that camera so that the axes and the main scene are not connected. I set up the viewport of that camera (2nd viewport) to the left bottom corner with size (100,100) similar to 3d studio max. Finally, my axes are displayed in the 2nd viewport, but not in the main scene. That is correct so far. Now my problem is that not only the axes but also the main scene is displayed in the 2nd viewport. This shouldn't be like that because the main scene is not a child of the 2nd camera. What am I doing wrong? These are my parameters which I set to the camera: osg::ref_ptrosg::Node _axes = osgDB::readNodeFile(../data/osg/coordinate_axes.osg); _camera-setProjectionMatrix(osg::Matrix::perspective(50.0, 1, 0.1, 1.0)); _camera-setViewport(0,0,100,100); _camera-setReferenceFrame(osg::Transform::ABSOLUTE_RF); _camera-setRenderOrder(osg::CameraNode::POST_RENDER); _camera-setClearMask(GL_DEPTH_BUFFER_BIT); _camera-addChild(_axes.get()); _root-addChild(_camera.get()); best regards, Oliver ___ osg-users mailing list osg-users@lists.openscenegraph.org mailto:osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org mailto: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 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] why arent the .h postfix used in openscenegraph?
On Tue, Apr 8, 2008 at 2:31 PM, [EMAIL PROTECTED] wrote: Allright.. I didn't know that was the standard, allways used and seen .h used. :) The problems with standards is that their are jut so many to choose from... .h is most common for C++ simply from C heritage, but in the early days of C++ loads of others sprung up in the absence of any clear definition so .H, .hxx, .hpp and many other variants all turn up in the wild, there a many of these convoluted variations none of which really make any sense once you take a step back. When Standard C++ finally made it out it didn't use any of these convoluted attempts at something different from C's .h, rather it just dropped the extension entirely. Compilers just open files that are specified via #include without making any assumptions, so you can use absolutely anything you want, you could use .CPlusPlusHeaderFile if you wished and it'll still compile. Back in the late nineties I made the choice about extensionless header for the OSG as it aligns itself with what the Standard C++ headers convention, rather than going for one of the many .yetanotherabitaryc++headerextensions that were proliferating at the time. Back then I wouldn't have thought that it'd take more than a decade for IDE's to automatically realise that an extension C++ header file is a C++ header file for all the sophistication of modern software some really dumb arse things aren't possible... Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Two separated subgraphs, 2nd trial
Hi Wojtek, thanks for the hint. Our project supports camera views from the robots position. But the robots cameranodes are not placed directly beyond the root node, but as leaves of the graph. So I've implemented a function which does it automatically, and with all cameranodes. So that was the problem. regards Oliver Wojciech Lewandowski schrieb: Hi Oliver, I have read your email. And, I too, have no idea what might be wrong. I bet its something beyond the code excerpt you had given. My only guess is that scene is somehow added to second camera. Do you clone this second hud camera from main camera maybe ? Could this be possible that you somehow added scene model into axes.osg ? I am afraid I am unable to figure it out. Maybe you can post more lines of your code ? Cheers, Wojtek - Original Message - *From:* Oliver Kutter mailto:[EMAIL PROTECTED] *To:* OpenSceneGraph Users mailto:osg-users@lists.openscenegraph.org *Sent:* Tuesday, April 08, 2008 3:53 PM *Subject:* Re: [osg-users] Two separated subgraphs, 2nd trial Hi, ok, I made some screenshots, which I will explain in detail. First I show you the structure of the graph. This is how I set up the graph: http://getwww.uni-paderborn.de/~kutter/structure.jpg http://getwww.uni-paderborn.de/%7Ekutter/structure.jpg As you can see, the camera and the coordinate system axes are in a 2nd subgraph. Now, some screenshot from the application: First, what you see in the main window is our lab with a robot at (0,0,0). The small viewport bottom left is the view from the 2nd camera. http://getwww.uni-paderborn.de/~kutter/scene1.jpg http://getwww.uni-paderborn.de/%7Ekutter/scene1.jpg As you can see in the next image, the coordinate system axes, which are a child of the 2nd camera, are not shown in the main viewport but in the viewport of the 2nd camera. But the main scene (lab with robot) is also shown in the 2nd viewport. I don't know why. http://getwww.uni-paderborn.de/~kutter/scene2.jpg http://getwww.uni-paderborn.de/%7Ekutter/scene2.jpg I used GL_DEPTH_BUFFER_BIT to ensure that the background of the 2nd viewport is not visible, so that the main scene is visible through the 2nd viewport, as you can see here. http://getwww.uni-paderborn.de/~kutter/scene3.jpg http://getwww.uni-paderborn.de/%7Ekutter/scene3.jpg Now I want only the coordinate system axes to be shown in the 2nd viewport. I hope you can help me now. And I hope you can see the images. regards, Oliver Robert Osfield schrieb: Hi Oliver, On Tue, Apr 8, 2008 at 1:13 PM, Oliver Kutter [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: Hi, isn't there anybody, who can answer my question (see below)? I've just re-read you post and can't think of anything to say - as I really don't know what specifically is amiss. I'd guess others don't know either. Try providing a screen shot to tell us what looks wrong then we might be able to help you. Robert. regards Oliver Oliver Kutter schrieb: Hi guys, I have a question concerning the openscenegraph example osghud. I have a similar scene like this example except that I don't want to display hud text. Instead I want to render some small coordinate system axes like the ones in 3d studio max in the left bottom corner. I still use openscenegraph 1.2, but I think this is not important for my problem. Now my graph looks like this: I have a sceneview with a camera, a root node and the main scene as a child of the root node. Now I constructed my stuff like the osghud example: I added a new camera to the root node as a new subgraph and then I added my coordinates system axes model as a child to that camera so that the axes and the main scene are not connected. I set up the viewport of that camera (2nd viewport) to the left bottom corner with size (100,100) similar to 3d studio max. Finally, my axes are displayed in the 2nd viewport, but not in the main scene. That is correct so far. Now my problem is that not only the axes but also the main scene is displayed in the 2nd viewport. This shouldn't be like that because the main scene is not a child of the 2nd camera. What am I doing wrong? These are my parameters which I set to the camera: osg::ref_ptrosg::Node _axes = osgDB::readNodeFile(../data/osg/coordinate_axes.osg); _camera-setProjectionMatrix(osg::Matrix::perspective(50.0, 1, 0.1, 1.0)); _camera-setViewport(0,0,100,100); _camera-setReferenceFrame(osg::Transform::ABSOLUTE_RF); _camera-setRenderOrder(osg::CameraNode::POST_RENDER);
Re: [osg-users] Quicktime plugin live streaming documentation/examples
Hi Adrian, I've not documented anything on the wiki yet but below is how the result was achieved on Windows XP. See my previous post for any more detail. The demo/example is really just a quad with your live feed playing - so a I've just tweaked osgmovie here to force load the plug-in from a .live association and then interpret the file basename to get a device and input ID - ugly but working... 0. If you have NO QuickTime driver for your device then install http://www.abstractplane.com/products/vdig.jsp Use the latest version and do the manual install from the zip. You will jave to live with the demo mode or fork out some $$$. If your capture device has a QuickTime driver then you do not need this VDIG for Windows thing eg BlackMagic Intensity Pro. 1. Modify the osgmovie.cpp and make sure that the .live extension is associated with the osgdb_qt plugin: osgDB::Registry::instance()-addFileExtensionAlias(live,qt); 2. run osgmovie --devices If you have any live feed devices associated with a QuickTime driver then this will spit out some command line options and associations. It will also spit out any pseudo Windows VDIG wrapped Direct Show devices in the same way eg: ... 4:1.liveBlackmagic HDTV 720Intensity HDTV 720p 59.94 ... 1:4.liveHauppauge WinTV 418 Video Capture (4E384A6E048F0)S-Video 3 UYVY @ 720x480 ... 3. run osgmovie and pass it a pseudo file name that will be translated by the plug-in to point at an input device eg $ osgmovie x:y.live This will force load the osgdb_qt plug-in, and then attempt to decode the x:y.live where x and y are the input and channel of your input - eg 5:0.live I plan to submit to Robert an osgvideo example which wraps some of this up a bit better. Cheers, Colin. Adrian Egli OpenSceneGraph (3D) wrote: Hi any demo / example ? regards 2008/4/3, Mike Greene [EMAIL PROTECTED] mailto:[EMAIL PROTECTED]: Colin, Success! Using the later version of VDIG that you referenced, I was able to get a live stream to work with osgmovie. I'm using a KOCOM camera running video through a Canopus ADVC 110 A/D video convertor into a firewire cable. This is on Windows XP, OSG 2.3.5, Visual Studio 2005 debug, Quicktime SDK 7.3. Mike Greene ___ osg-users mailing list osg-users@lists.openscenegraph.org mailto:osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Adrian Egli ___ 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] Dilemma with the usage of object Shaders in differend views ...
Hello, I think attaching a shader to each view instead of to object X would be fine. If you want to use the callback I think you should create a pre-draw callback to the object, which I'm not sure possible. The update callbacks won't help you since it run on all the scene before the rendering and then only the last setting of the shader will be set, and it also might affect performance. So I still think attaching shaders to the views would do what you want. Guy. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Tuesday, April 08, 2008 10:55 AM To: osg-users@lists.openscenegraph.org Subject: [osg-users] Dilemma with the usage of object Shaders in differend views ... Hi folks, actually i am working on object shading with OSG (i.e. Dot3). All works fine with single views. Now i am using the osgViewer::Composite viewer and getting some dielemma with the usage of object based shaders in differend views based on the same scene graph. I.e.: I've a single scene node with an object X where i bind the shaders (at the object StateSet) for execution. In a single view no problem. If i use this scene in multiple views (i.e. A, B) i've the dilemma, that i've to use diffrend shader params on the same shader instance. In each rendering pass the params of the camera are differend from the point of view of the views, if the views are rendered. But the shader has no knowledge about this, it uses only a single uniform to hook bind param ... I've thought about the following sollutions: 1. Using for each view a single shader instance at the same object StateSet. Is this usefull? If the scene is complex i could get a huge count of shaders which have to be executed. Additionally i'm not sure, if the binding of the unused shaders produces render artifacts or perfomance issues... 2. Using a callback mechanism which switches this values at the shader before rendering How i could achieve this aim in best way? Has anyone a better solution? Best regards, Christian ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] why arent the .h postfix used in openscenegraph? (UNCLASSIFIED)
Classification: UNCLASSIFIED Caveats: NONE The problems with standards is that their are jut so many to choose from... What? That classic chesnut goes: The GREAT thing about standards is that there are so many to choose from. I should have sent this in OOXML format. Mike Dorsett - Software Engineer - SAIC -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Osfield Sent: Tuesday, April 08, 2008 9:56 AM To: OpenSceneGraph Users Subject: Re: [osg-users] why arent the .h postfix used in openscenegraph? On Tue, Apr 8, 2008 at 2:31 PM, [EMAIL PROTECTED] wrote: Allright.. I didn't know that was the standard, allways used and seen .h used. :) The problems with standards is that their are jut so many to choose from... .h is most common for C++ simply from C heritage, but in the early days of C++ loads of others sprung up in the absence of any clear definition so .H, .hxx, .hpp and many other variants all turn up in the wild, there a many of these convoluted variations none of which really make any sense once you take a step back. When Standard C++ finally made it out it didn't use any of these convoluted attempts at something different from C's .h, rather it just dropped the extension entirely. Compilers just open files that are specified via #include without making any assumptions, so you can use absolutely anything you want, you could use .CPlusPlusHeaderFile if you wished and it'll still compile. Back in the late nineties I made the choice about extensionless header for the OSG as it aligns itself with what the Standard C++ headers convention, rather than going for one of the many .yetanotherabitaryc++headerextensions that were proliferating at the time. Back then I wouldn't have thought that it'd take more than a decade for IDE's to automatically realise that an extension C++ header file is a C++ header file for all the sophistication of modern software some really dumb arse things aren't possible... Robert. Classification: UNCLASSIFIED Caveats: NONE ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] cessnafire particle setup
Hi , Does anyone happen to have the code (or settings) to recreate the fire/smoke shown in cessnafire? biv ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Two separated subgraphs, 2nd trial
Hi Oliver, I have read your email. And, I too, have no idea what might be wrong. I bet its something beyond the code excerpt you had given. My only guess is that scene is somehow added to second camera. Do you clone this second hud camera from main camera maybe ? Could this be possible that you somehow added scene model into axes.osg ? I am afraid I am unable to figure it out. Maybe you can post more lines of your code ? Cheers, Wojtek - Original Message - From: Oliver Kutter To: OpenSceneGraph Users Sent: Tuesday, April 08, 2008 3:53 PM Subject: Re: [osg-users] Two separated subgraphs, 2nd trial Hi, ok, I made some screenshots, which I will explain in detail. First I show you the structure of the graph. This is how I set up the graph: http://getwww.uni-paderborn.de/~kutter/structure.jpg As you can see, the camera and the coordinate system axes are in a 2nd subgraph. Now, some screenshot from the application: First, what you see in the main window is our lab with a robot at (0,0,0). The small viewport bottom left is the view from the 2nd camera. http://getwww.uni-paderborn.de/~kutter/scene1.jpg As you can see in the next image, the coordinate system axes, which are a child of the 2nd camera, are not shown in the main viewport but in the viewport of the 2nd camera. But the main scene (lab with robot) is also shown in the 2nd viewport. I don't know why. http://getwww.uni-paderborn.de/~kutter/scene2.jpg I used GL_DEPTH_BUFFER_BIT to ensure that the background of the 2nd viewport is not visible, so that the main scene is visible through the 2nd viewport, as you can see here. http://getwww.uni-paderborn.de/~kutter/scene3.jpg Now I want only the coordinate system axes to be shown in the 2nd viewport. I hope you can help me now. And I hope you can see the images. regards, Oliver Robert Osfield schrieb: Hi Oliver, On Tue, Apr 8, 2008 at 1:13 PM, Oliver Kutter [EMAIL PROTECTED] wrote: Hi, isn't there anybody, who can answer my question (see below)? I've just re-read you post and can't think of anything to say - as I really don't know what specifically is amiss. I'd guess others don't know either. Try providing a screen shot to tell us what looks wrong then we might be able to help you. Robert. regards Oliver Oliver Kutter schrieb: Hi guys, I have a question concerning the openscenegraph example osghud. I have a similar scene like this example except that I don't want to display hud text. Instead I want to render some small coordinate system axes like the ones in 3d studio max in the left bottom corner. I still use openscenegraph 1.2, but I think this is not important for my problem. Now my graph looks like this: I have a sceneview with a camera, a root node and the main scene as a child of the root node. Now I constructed my stuff like the osghud example: I added a new camera to the root node as a new subgraph and then I added my coordinates system axes model as a child to that camera so that the axes and the main scene are not connected. I set up the viewport of that camera (2nd viewport) to the left bottom corner with size (100,100) similar to 3d studio max. Finally, my axes are displayed in the 2nd viewport, but not in the main scene. That is correct so far. Now my problem is that not only the axes but also the main scene is displayed in the 2nd viewport. This shouldn't be like that because the main scene is not a child of the 2nd camera. What am I doing wrong? These are my parameters which I set to the camera: osg::ref_ptrosg::Node _axes = osgDB::readNodeFile(../data/osg/coordinate_axes.osg); _camera-setProjectionMatrix(osg::Matrix::perspective(50.0, 1, 0.1, 1.0)); _camera-setViewport(0,0,100,100); _camera-setReferenceFrame(osg::Transform::ABSOLUTE_RF); _camera-setRenderOrder(osg::CameraNode::POST_RENDER); _camera-setClearMask(GL_DEPTH_BUFFER_BIT); _camera-addChild(_axes.get()); _root-addChild(_camera.get()); best regards, Oliver ___ 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 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] HDR with osg
Hello.
1x1 texture should be rendered and call the shaders. I did it once in
multipass program that ran some algorithm on the GPU.
Be sure that you use orthographic projection and the viewport to be 1x1:
camera-setProjectionMatrixAsOrtho2D(0,1,0,1);
camera-setViewport(0, 0, 1, 1);
Guy.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of J.P.
Delport
Sent: Tuesday, April 08, 2008 3:11 PM
To: OpenSceneGraph Users
Subject: Re: [osg-users] HDR with osg
Hi,
Roman Grigoriev wrote:
Hi guys!
I try to implement HDR. And I got some problem when I compute average
luminance
I have to render it to 1X1 texture and here is the main problem
When I setup viewport with setVewport(0,0,1,1) - I've got clearcolor
i.e. (1,0,0,0)
Is this for a 1x1 target, or for your 2x2 target? I guess your shader is
not executed at all. What are you doing in the vertex shader? I have not
tried 1x1 textures myself.
When I setup viewport with setVewport(0,0,2,2) - I've got average
luminance - but here I've got 2X2 texture but I need 1X1 texture
At some texture size (search gpgpu.org or experiment) it becomes faster
to copy the texture to CPU and do final calculation there.
What should I do?
Debug more :) See if your shader is executed for 1x1 case at all. Turn
on more OSG (see OSG_NOTIFY_LEVEL) messages to see if there are not
other problems, e.g. non-power of two texture resampling. Try texture
rectangles...
jp
Here is my source (luminance2 texture has size of 4X4)
osg::ref_ptrosg::Texture2D finalluminance = new osg::Texture2D;
finalluminance-setTextureSize( 2, 2);
finalluminance-setInternalFormat(GL_RGBA16F_ARB);
finalluminance-setSourceFormat(GL_RGBA);
finalluminance-setSourceType(GL_FLOAT);
finalluminance-setFilter(osg::Texture2D::MIN_FILTER,osg::Texture2D::LIN
EAR);
finalluminance-setFilter(osg::Texture2D::MAG_FILTER,osg::Texture2D::LIN
EAR);
finalluminance-setWrap(osg::Texture::WRAP_S,
osg::Texture::CLAMP);
finalluminance-setWrap(osg::Texture::WRAP_T,
osg::Texture::CLAMP);
osg::ref_ptrosg::Camera luminance3Camera = new osg::Camera;
osg::ref_ptrosg::Geode geode = new osg::Geode;
osg::ref_ptrosg::Geometry geom
=osg::createTexturedQuadGeometry(osg::Vec3(0,0,-1),osg::Vec3(1.0,0.0,-1.
0),osg::Vec3(0.0,1.0,-1.0));
geom-getOrCreateStateSet()-setMode(GL_LIGHTING,osg::StateAttribute::OF
F);
geode-addDrawable(geom.get());
luminance3Camera-setName(luminance3);
luminance3Camera-setClearColor(osg::Vec4f(1.0f,0.0f,0.0f,1.0f));
luminance3Camera-setProjectionMatrix(osg::Matrix::ortho2D(0,1,0,1));
luminance3Camera-setReferenceFrame(osg::Transform::ABSOLUTE_RF);
luminance3Camera-setViewMatrix(osg::Matrix::identity());
luminance3Camera-setViewport(0,0,2,2);
luminance3Camera-setRenderOrder(osg::Camera::POST_RENDER,13);
luminance3Camera-setRenderTargetImplementation(osg::Camera::FRAME_BUFFE
R_OBJECT);
luminance3Camera-attach(osg::Camera::COLOR_BUFFER,finalluminance.get())
;
luminance3Camera-addChild(geode.get());
osg::ref_ptrosg::StateSet luminance3stateset
=luminance3Camera-getOrCreateStateSet();
luminance3stateset-setTextureAttributeAndModes(0,luminance2.get(),osg::
StateAttribute::ON);
luminance3stateset-setAttribute(clamp,
osg::StateAttribute::ON);
root-addChild(luminance3Camera.get());
osg::Program* luminance3prg = new
osg::Program;
luminance3stateset-setAttribute(luminance3prg);
luminance3prg-addShader(osg::Shader::readShaderFile(osg::Shader::VERTEX
,
osgDB::findDataFile(Shaders/downLumExp_vp.glsl)));
luminance3prg-addShader(osg::Shader::readShaderFile(osg::Shader::FRAGME
NT,
osgDB::findDataFile(Shaders/downLumExp.glsl)));
osg::Uniform* DownSampler = new
osg::Uniform(DownSampler,0);
luminance3stateset-addUniform(DownSampler);
here is downLumExp.glsl
/*FRAGMENT_SHADER*/
uniform sampler2D DownSampler;
const vec2 samples[16]={
-0.375, -0.375, -0.125, -0.375, 0.125, -0.375, 0.375, -0.375, -0.375,
-0.125, -0.125, -0.125, 0.125, -0.125, 0.375, -0.125, -0.375, 0.125,
-0.125, 0.125, 0.125, 0.125, 0.375, 0.125, -0.375, 0.375, -0.125,
0.375,
0.125, 0.375, 0.375, 0.375
};
void main(void)
{
float lum = 0.0;
float maximum = 0.0;
vec4 color;
vec2 sample;
for(int i = 0; i 16; i++)
Re: [osg-users] why arent the .h postfix used in openscenegraph?
Thanks for your elaborated insight on the history of headers! :) Btw. I guess you meant extentionless at the end? :) Erlend From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Osfield Sent: 8. april 2008 16:56 To: OpenSceneGraph Users Subject: Re: [osg-users] why arent the .h postfix used in openscenegraph? On Tue, Apr 8, 2008 at 2:31 PM, [EMAIL PROTECTED]mailto:[EMAIL PROTECTED] wrote: Allright.. I didn't know that was the standard, allways used and seen .h used. :) The problems with standards is that their are jut so many to choose from... .h is most common for C++ simply from C heritage, but in the early days of C++ loads of others sprung up in the absence of any clear definition so .H, .hxx, .hpp and many other variants all turn up in the wild, there a many of these convoluted variations none of which really make any sense once you take a step back. When Standard C++ finally made it out it didn't use any of these convoluted attempts at something different from C's .h, rather it just dropped the extension entirely. Compilers just open files that are specified via #include without making any assumptions, so you can use absolutely anything you want, you could use .CPlusPlusHeaderFile if you wished and it'll still compile. Back in the late nineties I made the choice about extensionless header for the OSG as it aligns itself with what the Standard C++ headers convention, rather than going for one of the many .yetanotherabitaryc++headerextensions that were proliferating at the time. Back then I wouldn't have thought that it'd take more than a decade for IDE's to automatically realise that an extension C++ header file is a C++ header file for all the sophistication of modern software some really dumb arse things aren't possible... Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Two separated subgraphs, 2nd trial
Maybe you could send your whole file. The code you inlined here seem right. Guy. From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Osfield Sent: Tuesday, April 08, 2008 2:51 PM To: OpenSceneGraph Users Subject: Re: [osg-users] Two separated subgraphs, 2nd trial Hi Oliver, On Tue, Apr 8, 2008 at 1:13 PM, Oliver Kutter [EMAIL PROTECTED] wrote: Hi, isn't there anybody, who can answer my question (see below)? I've just re-read you post and can't think of anything to say - as I really don't know what specifically is amiss. I'd guess others don't know either. Try providing a screen shot to tell us what looks wrong then we might be able to help you. Robert. regards Oliver Oliver Kutter schrieb: Hi guys, I have a question concerning the openscenegraph example osghud. I have a similar scene like this example except that I don't want to display hud text. Instead I want to render some small coordinate system axes like the ones in 3d studio max in the left bottom corner. I still use openscenegraph 1.2, but I think this is not important for my problem. Now my graph looks like this: I have a sceneview with a camera, a root node and the main scene as a child of the root node. Now I constructed my stuff like the osghud example: I added a new camera to the root node as a new subgraph and then I added my coordinates system axes model as a child to that camera so that the axes and the main scene are not connected. I set up the viewport of that camera (2nd viewport) to the left bottom corner with size (100,100) similar to 3d studio max. Finally, my axes are displayed in the 2nd viewport, but not in the main scene. That is correct so far. Now my problem is that not only the axes but also the main scene is displayed in the 2nd viewport. This shouldn't be like that because the main scene is not a child of the 2nd camera. What am I doing wrong? These are my parameters which I set to the camera: osg::ref_ptrosg::Node _axes = osgDB::readNodeFile(../data/osg/coordinate_axes.osg); _camera-setProjectionMatrix(osg::Matrix::perspective(50.0, 1, 0.1, 1.0)); _camera-setViewport(0,0,100,100); _camera-setReferenceFrame(osg::Transform::ABSOLUTE_RF); _camera-setRenderOrder(osg::CameraNode::POST_RENDER); _camera-setClearMask(GL_DEPTH_BUFFER_BIT); _camera-addChild(_axes.get()); _root-addChild(_camera.get()); best regards, Oliver ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Dilemma with the usage of object Shaders in differend views ...
Hello Guy, I think attaching a shader to each view instead of to object X would be fine. I'm not sure if this may be the right thing. Correct me if I'm wrong but this causes in some other issues: 1. I lost the reference to the specifiv object states like Textures, Geometries etc. How does the shader should access this values by differend objects? 2. If i bind it to the view, each object is rendered with this shader. So i shouldn't have the ability to separate shaders and effects between objects ... If you want to use the callback I think you should create a pre-draw callback to the object, which I'm not sure possible. The update callbacks won't help you since it run on all the scene before the rendering and then only the last setting of the shader will be set, and it also might affect performance. So I still think attaching shaders to the views would do what you want. Ok, this is an argument i've to agree. But if If i overload the render method of the composite viewer i could implement callbacks (better update sequences) for each object before calling the parent rendering method, so this should be possible. But i am not sure about possible perfomance lacks ... Best regards, Chrsitian Guy wrote: Hello, I think attaching a shader to each view instead of to object X would be fine. If you want to use the callback I think you should create a pre-draw callback to the object, which I'm not sure possible. The update callbacks won't help you since it run on all the scene before the rendering and then only the last setting of the shader will be set, and it also might affect performance. So I still think attaching shaders to the views would do what you want. Guy. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Tuesday, April 08, 2008 10:55 AM To: osg-users@lists.openscenegraph.org Subject: [osg-users] Dilemma with the usage of object Shaders in differend views ... Hi folks, actually i am working on object shading with OSG (i.e. Dot3). All works fine with single views. Now i am using the osgViewer::Composite viewer and getting some dielemma with the usage of object based shaders in differend views based on the same scene graph. I.e.: I've a single scene node with an object X where i bind the shaders (at the object StateSet) for execution. In a single view no problem. If i use this scene in multiple views (i.e. A, B) i've the dilemma, that i've to use diffrend shader params on the same shader instance. In each rendering pass the params of the camera are differend from the point of view of the views, if the views are rendered. But the shader has no knowledge about this, it uses only a single uniform to hook bind param ... I've thought about the following sollutions: 1. Using for each view a single shader instance at the same object StateSet. Is this usefull? If the scene is complex i could get a huge count of shaders which have to be executed. Additionally i'm not sure, if the binding of the unused shaders produces render artifacts or perfomance issues... 2. Using a callback mechanism which switches this values at the shader before rendering How i could achieve this aim in best way? Has anyone a better solution? Best regards, Christian ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ 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] Two separated subgraphs, 2nd trial
Hi Guy, everything is fine, I found the error. I already mentioned in a previous email. thanks, Oliver Guy schrieb: Maybe you could send your whole file. The code you inlined here seem right. Guy. *From:* [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] *On Behalf Of *Robert Osfield *Sent:* Tuesday, April 08, 2008 2:51 PM *To:* OpenSceneGraph Users *Subject:* Re: [osg-users] Two separated subgraphs, 2nd trial Hi Oliver, On Tue, Apr 8, 2008 at 1:13 PM, Oliver Kutter [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: Hi, isn't there anybody, who can answer my question (see below)? I've just re-read you post and can't think of anything to say - as I really don't know what specifically is amiss. I'd guess others don't know either. Try providing a screen shot to tell us what looks wrong then we might be able to help you. Robert. regards Oliver Oliver Kutter schrieb: Hi guys, I have a question concerning the openscenegraph example osghud. I have a similar scene like this example except that I don't want to display hud text. Instead I want to render some small coordinate system axes like the ones in 3d studio max in the left bottom corner. I still use openscenegraph 1.2, but I think this is not important for my problem. Now my graph looks like this: I have a sceneview with a camera, a root node and the main scene as a child of the root node. Now I constructed my stuff like the osghud example: I added a new camera to the root node as a new subgraph and then I added my coordinates system axes model as a child to that camera so that the axes and the main scene are not connected. I set up the viewport of that camera (2nd viewport) to the left bottom corner with size (100,100) similar to 3d studio max. Finally, my axes are displayed in the 2nd viewport, but not in the main scene. That is correct so far. Now my problem is that not only the axes but also the main scene is displayed in the 2nd viewport. This shouldn't be like that because the main scene is not a child of the 2nd camera. What am I doing wrong? These are my parameters which I set to the camera: osg::ref_ptrosg::Node _axes = osgDB::readNodeFile(../data/osg/coordinate_axes.osg); _camera-setProjectionMatrix(osg::Matrix::perspective(50.0, 1, 0.1, 1.0)); _camera-setViewport(0,0,100,100); _camera-setReferenceFrame(osg::Transform::ABSOLUTE_RF); _camera-setRenderOrder(osg::CameraNode::POST_RENDER); _camera-setClearMask(GL_DEPTH_BUFFER_BIT); _camera-addChild(_axes.get()); _root-addChild(_camera.get()); best regards, Oliver ___ osg-users mailing list osg-users@lists.openscenegraph.org mailto:osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org mailto: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 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Glenum pixelFormat
Here is what I've found in gl.h:
/* PixelFormat */
#define GL_COLOR_INDEX0x1900
#define GL_STENCIL_INDEX 0x1901
#define GL_DEPTH_COMPONENT0x1902
#define GL_RED0x1903
#define GL_GREEN 0x1904
#define GL_BLUE 0x1905
#define GL_ALPHA 0x1906
#define GL_RGB0x1907
#define GL_RGBA 0x1908
#define GL_LUMINANCE 0x1909
#define GL_LUMINANCE_ALPHA0x190A
/* texture */
#define GL_ALPHA4 0x803B
#define GL_ALPHA8 0x803C
#define GL_ALPHA120x803D
#define GL_ALPHA160x803E
#define GL_LUMINANCE4 0x803F
#define GL_LUMINANCE8 0x8040
#define GL_LUMINANCE120x8041
#define GL_LUMINANCE160x8042
#define GL_LUMINANCE4_ALPHA4 0x8043
#define GL_LUMINANCE6_ALPHA2 0x8044
#define GL_LUMINANCE8_ALPHA8 0x8045
#define GL_LUMINANCE12_ALPHA4 0x8046
#define GL_LUMINANCE12_ALPHA120x8047
#define GL_LUMINANCE16_ALPHA160x8048
#define GL_INTENSITY 0x8049
#define GL_INTENSITY4 0x804A
#define GL_INTENSITY8 0x804B
#define GL_INTENSITY120x804C
#define GL_INTENSITY160x804D
#define GL_R3_G3_B2 0x2A10
#define GL_RGB4 0x804F
#define GL_RGB5 0x8050
#define GL_RGB8 0x8051
#define GL_RGB10 0x8052
#define GL_RGB12 0x8053
#define GL_RGB16 0x8054
#define GL_RGBA2 0x8055
#define GL_RGBA4 0x8056
#define GL_RGB5_A10x8057
#define GL_RGBA8 0x8058
#define GL_RGB10_A2 0x8059
#define GL_RGBA12 0x805A
#define GL_RGBA16 0x805B
#define GL_TEXTURE_RED_SIZE 0x805C
#define GL_TEXTURE_GREEN_SIZE 0x805D
#define GL_TEXTURE_BLUE_SIZE 0x805E
#define GL_TEXTURE_ALPHA_SIZE 0x805F
#define GL_TEXTURE_LUMINANCE_SIZE 0x8060
#define GL_TEXTURE_INTENSITY_SIZE 0x8061
#define GL_PROXY_TEXTURE_1D 0x8063
#define GL_PROXY_TEXTURE_2D 0x8064
For internal texture format there are also definitions in osg/Texture
In osg/Image:
enum AllocationMode {
NO_DELETE,
USE_NEW_DELETE,
USE_MALLOC_FREE
};
Good luck,
Guy.
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Vincent
Bourdier
Sent: Tuesday, April 08, 2008 2:55 PM
To: osg
Subject: [osg-users] Glenum pixelFormat
Hi All,
I'm trying to make a osg::Image, but in allocateImage(...) and
setImage(...) I need :
Pixel format,
Internal texture format,
AllocationMode...
But I didn't find any possible values ?!
Where can I find it ?
thanks
Regards,
Vincent.
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] why arent the .h postfix used in openscenegraph?
Oh no! The header file extension discussion, _again_? :-) Well, I sat out of it last time, so I'll throw my greatly-devalued US$0.02 into the fray this time... .h are standard for C, but not C++. Arguably, a mistake in the genesis of C++. Stroustrup has publicly stated his concise definition of C++ as C with classes. Using such a definition, there was no need for C++ to redefine header file extensions; no such change was necessary to merely add classes to C. As others have stated, the compiler doesn't care about the header extension and enforces no standard extension. Therefore, those of us in OSG can do whatever we want. Indeed, the osgPlugins routinely use a .h extension for their header files. The absence of an extension creates problems for code editors that present non-intuitive interfaces for controlling syntax highlighting. Appending .h to OSG headers would eliminate this confusion. Paul Martz Skew Matrix Software LLC http://www.skew-matrix.com http://www.skew-matrix.com/ +1 303 859 9466 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] cessnafire particle setup
These files contain the fire and the smoke trail. Good luck, Guy. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Gerrick Bivins Sent: Tuesday, April 08, 2008 5:00 PM To: OpenSceneGraph Users Subject: [osg-users] cessnafire particle setup Hi , Does anyone happen to have the code (or settings) to recreate the fire/smoke shown in cessnafire? biv ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g fire.osg Description: fire.osg tail of fire.osg Description: tail of fire.osg ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Glenum pixelFormat
Thanks Guy
I've looked at gl.h too to find that.
Thanks a lot.
Regard.
Vincent.
2008/4/8, Guy [EMAIL PROTECTED]:
Here is what I've found in gl.h:
/* PixelFormat */
#define GL_COLOR_INDEX0x1900
#define GL_STENCIL_INDEX 0x1901
#define GL_DEPTH_COMPONENT0x1902
#define GL_RED0x1903
#define GL_GREEN 0x1904
#define GL_BLUE 0x1905
#define GL_ALPHA 0x1906
#define GL_RGB0x1907
#define GL_RGBA 0x1908
#define GL_LUMINANCE 0x1909
#define GL_LUMINANCE_ALPHA0x190A
/* texture */
#define GL_ALPHA4 0x803B
#define GL_ALPHA8 0x803C
#define GL_ALPHA120x803D
#define GL_ALPHA160x803E
#define GL_LUMINANCE4 0x803F
#define GL_LUMINANCE8 0x8040
#define GL_LUMINANCE120x8041
#define GL_LUMINANCE160x8042
#define GL_LUMINANCE4_ALPHA4 0x8043
#define GL_LUMINANCE6_ALPHA2 0x8044
#define GL_LUMINANCE8_ALPHA8 0x8045
#define GL_LUMINANCE12_ALPHA4 0x8046
#define GL_LUMINANCE12_ALPHA120x8047
#define GL_LUMINANCE16_ALPHA160x8048
#define GL_INTENSITY 0x8049
#define GL_INTENSITY4 0x804A
#define GL_INTENSITY8 0x804B
#define GL_INTENSITY120x804C
#define GL_INTENSITY160x804D
#define GL_R3_G3_B2 0x2A10
#define GL_RGB4 0x804F
#define GL_RGB5 0x8050
#define GL_RGB8 0x8051
#define GL_RGB10 0x8052
#define GL_RGB12 0x8053
#define GL_RGB16 0x8054
#define GL_RGBA2 0x8055
#define GL_RGBA4 0x8056
#define GL_RGB5_A10x8057
#define GL_RGBA8 0x8058
#define GL_RGB10_A2 0x8059
#define GL_RGBA12 0x805A
#define GL_RGBA16 0x805B
#define GL_TEXTURE_RED_SIZE 0x805C
#define GL_TEXTURE_GREEN_SIZE 0x805D
#define GL_TEXTURE_BLUE_SIZE 0x805E
#define GL_TEXTURE_ALPHA_SIZE 0x805F
#define GL_TEXTURE_LUMINANCE_SIZE 0x8060
#define GL_TEXTURE_INTENSITY_SIZE 0x8061
#define GL_PROXY_TEXTURE_1D 0x8063
#define GL_PROXY_TEXTURE_2D 0x8064
For internal texture format there are also definitions in osg/Texture
In osg/Image:
enum AllocationMode {
NO_DELETE,
USE_NEW_DELETE,
USE_MALLOC_FREE
};
Good luck,
Guy.
--
*From:* [EMAIL PROTECTED] [mailto:
[EMAIL PROTECTED] *On Behalf Of *Vincent
Bourdier
*Sent:* Tuesday, April 08, 2008 2:55 PM
*To:* osg
*Subject:* [osg-users] Glenum pixelFormat
Hi All,
I'm trying to make a osg::Image, but in allocateImage(...) and
setImage(...) I need :
Pixel format,
Internal texture format,
AllocationMode...
But I didn't find any possible values ?!
Where can I find it ?
thanks
Regards,
Vincent.
___
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] Dilemma with the usage of object Shaders in differend views ...
Well, the shader doesn't know of the stateset of the object (textures attached) if you don't set it explicitly. Otherwise, the shader can be inherited and at ObjectX you can add a uniform for the sampler. You are right that all the objects will be rendered with the same shader. If you set different shader for each object, I would like some clarification about your original question. Do you want different shader per object but with some common features that are different for each view?? If so, keep the shader as they were (differently setted) on the objects in the single view. Add to all the shaders uniforms for the View properties, and set the uniforms values differently at each View node. Hope it helps, Guy. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Christian Heine Sent: Tuesday, April 08, 2008 5:39 PM To: OpenSceneGraph Users Subject: Re: [osg-users] Dilemma with the usage of object Shaders in differend views ... Hello Guy, I think attaching a shader to each view instead of to object X would be fine. I'm not sure if this may be the right thing. Correct me if I'm wrong but this causes in some other issues: 1. I lost the reference to the specifiv object states like Textures, Geometries etc. How does the shader should access this values by differend objects? 2. If i bind it to the view, each object is rendered with this shader. So i shouldn't have the ability to separate shaders and effects between objects ... If you want to use the callback I think you should create a pre-draw callback to the object, which I'm not sure possible. The update callbacks won't help you since it run on all the scene before the rendering and then only the last setting of the shader will be set, and it also might affect performance. So I still think attaching shaders to the views would do what you want. Ok, this is an argument i've to agree. But if If i overload the render method of the composite viewer i could implement callbacks (better update sequences) for each object before calling the parent rendering method, so this should be possible. But i am not sure about possible perfomance lacks ... Best regards, Chrsitian Guy wrote: Hello, I think attaching a shader to each view instead of to object X would be fine. If you want to use the callback I think you should create a pre-draw callback to the object, which I'm not sure possible. The update callbacks won't help you since it run on all the scene before the rendering and then only the last setting of the shader will be set, and it also might affect performance. So I still think attaching shaders to the views would do what you want. Guy. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Tuesday, April 08, 2008 10:55 AM To: osg-users@lists.openscenegraph.org Subject: [osg-users] Dilemma with the usage of object Shaders in differend views ... Hi folks, actually i am working on object shading with OSG (i.e. Dot3). All works fine with single views. Now i am using the osgViewer::Composite viewer and getting some dielemma with the usage of object based shaders in differend views based on the same scene graph. I.e.: I've a single scene node with an object X where i bind the shaders (at the object StateSet) for execution. In a single view no problem. If i use this scene in multiple views (i.e. A, B) i've the dilemma, that i've to use diffrend shader params on the same shader instance. In each rendering pass the params of the camera are differend from the point of view of the views, if the views are rendered. But the shader has no knowledge about this, it uses only a single uniform to hook bind param ... I've thought about the following sollutions: 1. Using for each view a single shader instance at the same object StateSet. Is this usefull? If the scene is complex i could get a huge count of shaders which have to be executed. Additionally i'm not sure, if the binding of the unused shaders produces render artifacts or perfomance issues... 2. Using a callback mechanism which switches this values at the shader before rendering How i could achieve this aim in best way? Has anyone a better solution? Best regards, Christian ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org
Re: [osg-users] Two separated subgraphs, 2nd trial
Yes, I've noticed too late... Sorry. Guy. From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Oliver Kutter Sent: Tuesday, April 08, 2008 5:48 PM To: OpenSceneGraph Users Subject: Re: [osg-users] Two separated subgraphs, 2nd trial Hi Guy, everything is fine, I found the error. I already mentioned in a previous email. thanks, Oliver Guy schrieb: Maybe you could send your whole file. The code you inlined here seem right. Guy. From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Osfield Sent: Tuesday, April 08, 2008 2:51 PM To: OpenSceneGraph Users Subject: Re: [osg-users] Two separated subgraphs, 2nd trial Hi Oliver, On Tue, Apr 8, 2008 at 1:13 PM, Oliver Kutter [EMAIL PROTECTED] wrote: Hi, isn't there anybody, who can answer my question (see below)? I've just re-read you post and can't think of anything to say - as I really don't know what specifically is amiss. I'd guess others don't know either. Try providing a screen shot to tell us what looks wrong then we might be able to help you. Robert. regards Oliver Oliver Kutter schrieb: Hi guys, I have a question concerning the openscenegraph example osghud. I have a similar scene like this example except that I don't want to display hud text. Instead I want to render some small coordinate system axes like the ones in 3d studio max in the left bottom corner. I still use openscenegraph 1.2, but I think this is not important for my problem. Now my graph looks like this: I have a sceneview with a camera, a root node and the main scene as a child of the root node. Now I constructed my stuff like the osghud example: I added a new camera to the root node as a new subgraph and then I added my coordinates system axes model as a child to that camera so that the axes and the main scene are not connected. I set up the viewport of that camera (2nd viewport) to the left bottom corner with size (100,100) similar to 3d studio max. Finally, my axes are displayed in the 2nd viewport, but not in the main scene. That is correct so far. Now my problem is that not only the axes but also the main scene is displayed in the 2nd viewport. This shouldn't be like that because the main scene is not a child of the 2nd camera. What am I doing wrong? These are my parameters which I set to the camera: osg::ref_ptrosg::Node _axes = osgDB::readNodeFile(../data/osg/coordinate_axes.osg); _camera-setProjectionMatrix(osg::Matrix::perspective(50.0, 1, 0.1, 1.0)); _camera-setViewport(0,0,100,100); _camera-setReferenceFrame(osg::Transform::ABSOLUTE_RF); _camera-setRenderOrder(osg::CameraNode::POST_RENDER); _camera-setClearMask(GL_DEPTH_BUFFER_BIT); _camera-addChild(_axes.get()); _root-addChild(_camera.get()); best regards, Oliver ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Shader question concerning GL_LIGHTING etc.
Hi, J-S, Mike, Leif, Thanks for the replies. J-S, using the node visitor indeed seems like the best solution. I'll try that out for sure. Cheers, Yefei -Original Message- From: [EMAIL PROTECTED] [mailto:osg-users- [EMAIL PROTECTED] On Behalf Of Jean-Sébastien Guay Sent: Tuesday, April 08, 2008 7:39 AM To: OpenSceneGraph Users Subject: Re: [osg-users] Shader question concerning GL_LIGHTING etc. Hi Yefei, Am I really reduced to modifying the core of OSG to add uniforms and set their values whenever a relevant GL call is being made? To add to what Mike and Leif said, you don't have to modify OSG. You could just write a visitor that does what you want, i.e. traverse the graph, checking for the state you need to set uniforms for, and then applying them. The same visitor could accumulate state from the root and when reaching a leaf node (geode), apply the right shader for the accumulated state. With a bit of work you can get a solution that's pretty general and works well, and which is also pretty optimal. Hope this helps, J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] http://www.cm-labs.com/ http://whitestar02.webhop.org/ ___ 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] Dilemma with the usage of object Shaders in differendviews ...
See the glsl_quickref.pdf there are several OSG-specific built-in uniforms such as osg_ViewMatrix. Also see glsl_simple.osg for example of a single shader parameterized with different uniforms. -- mew -Original Message- From: [EMAIL PROTECTED] [mailto:osg-users- [EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] revolution.org Sent: Tuesday, April 08, 2008 3:55 AM To: osg-users@lists.openscenegraph.org Subject: [osg-users] Dilemma with the usage of object Shaders in differendviews ... Hi folks, actually i am working on object shading with OSG (i.e. Dot3). All works fine with single views. Now i am using the osgViewer::Composite viewer and getting some dielemma with the usage of object based shaders in differend views based on the same scene graph. I.e.: I've a single scene node with an object X where i bind the shaders (at the object StateSet) for execution. In a single view no problem. If i use this scene in multiple views (i.e. A, B) i've the dilemma, that i've to use diffrend shader params on the same shader instance. In each rendering pass the params of the camera are differend from the point of view of the views, if the views are rendered. But the shader has no knowledge about this, it uses only a single uniform to hook bind param ... I've thought about the following sollutions: 1. Using for each view a single shader instance at the same object StateSet. Is this usefull? If the scene is complex i could get a huge count of shaders which have to be executed. Additionally i'm not sure, if the binding of the unused shaders produces render artifacts or perfomance issues... 2. Using a callback mechanism which switches this values at the shader before rendering How i could achieve this aim in best way? Has anyone a better solution? Best regards, Christian ___ 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] why arent the .h postfix used in openscenegraph?
Gordon, don't you have a FAQ on your website for this? So we can just answer with a quick link? -- mew -Original Message- From: [EMAIL PROTECTED] [mailto:osg-users- [EMAIL PROTECTED] On Behalf Of Gordon Tomlinson Sent: Tuesday, April 08, 2008 9:14 AM To: 'OpenSceneGraph Users' Subject: Re: [osg-users] why arent the .h postfix used in openscenegraph? See http://www.openscenegraph.org/index.php?page=PlatformSpecifics.VisualSt udio -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Tuesday, April 08, 2008 9:31 AM To: osg-users@lists.openscenegraph.org Subject: Re: [osg-users] why arent the .h postfix used in openscenegraph? Allright.. I didn't know that was the standard, allways used and seen .h used. :) Thanks for your answer. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jean-Sébastien Guay Sent: 8. april 2008 15:19 To: OpenSceneGraph Users Subject: Re: [osg-users] why arent the .h postfix used in openscenegraph? Hi, I figured out the syntax bit but arent .h c++ standard for include files?? #include iostream #include string #include vector #include osg/Geode You can still use .h (I do, as do most others) but OSG elected to go the same route as the Standard C++ Library. See The C++ Programming Language by Bjarne Stroustrup for details. J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] http://www.cm-labs.com/ http://whitestar02.webhop.org/ ___ 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 ___ 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] cessnafire particle setup
Thanks Guy! biv On Apr 8, 2008, at 11:56 AM, Guy wrote: These files contain the fire and the smoke trail. Good luck, Guy. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Gerrick Bivins Sent: Tuesday, April 08, 2008 5:00 PM To: OpenSceneGraph Users Subject: [osg-users] cessnafire particle setup Hi , Does anyone happen to have the code (or settings) to recreate the fire/smoke shown in cessnafire? biv ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g fire.osgtail of fire.osg___ 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] cessnafire particle setup
You cam always use osgEdit to get the part of an .osg file that you want and save it in the osg format. Cheers, Nicolas. 2008/4/8, Gerrick Bivins [EMAIL PROTECTED]: Thanks Guy! biv On Apr 8, 2008, at 11:56 AM, Guy wrote: These files contain the fire and the smoke trail. Good luck, Guy. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Gerrick Bivins Sent: Tuesday, April 08, 2008 5:00 PM To: OpenSceneGraph Users Subject: [osg-users] cessnafire particle setup Hi , Does anyone happen to have the code (or settings) to recreate the fire/smoke shown in cessnafire? biv ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g fire.osgtail of fire.osg___ 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 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] why arent the .h postfix used in openscenegraph?
On Tue, Apr 8, 2008 at 4:58 PM, Paul Martz [EMAIL PROTECTED] wrote: As others have stated, the compiler doesn't care about the header extension and enforces no standard extension. Therefore, those of us in OSG can do whatever we want. Indeed, the osgPlugins routinely use a .h extension for their header files. The absence of an extension creates problems for code editors that present non-intuitive interfaces for controlling syntax highlighting. Appending .h to OSG headers would eliminate this confusion. There is a key difference between plugins and the includes is that plugins are not at all public so consistency is less critical, where as the include directories are the public face to the library so that everything has to be consistent, and in the OSG case its consistent with Standard C++ headers. As for using .h for telling editors that its a C++ file... well some editors interpret it as C file and apply different syntax highlighting than they do if its a C++ file. This is the reason why so many silly extensions for C++ files came into existence. Frankly if a modern C++ IDE doesn't interpret an extension header as C++ then its pretty dumb as the standard library itself has extensionless headers, one really has to question how well it supports Standard C++ if doesn't properly handle this basic fact of C++. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Directory not found
Hi, everyone.
I've opened the examples that came with OSG and, after correctly
configuring VS2005 (following step-by-step the installation process), I was
able to compile them. I've tried then, to create a new and very simple
project (with the same paths already configured), with the following code:
#include osg/Node
int main()
{
osg::Node* node = new osg::Node();
}
And the following error was displayed:
Cannot open include file: 'osg/Node': No such file or directory
What am I missing?
Thanks,
Renan M Z Mendes
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Directory not found
Hi Renan,
You just need to add the path to your OSG include files into your build
system.
Robert.
On Tue, Apr 8, 2008 at 7:59 PM, Renan Mendes [EMAIL PROTECTED]
wrote:
Hi, everyone.
I've opened the examples that came with OSG and, after correctly
configuring VS2005 (following step-by-step the installation process), I was
able to compile them. I've tried then, to create a new and very simple
project (with the same paths already configured), with the following code:
#include osg/Node
int main()
{
osg::Node* node = new osg::Node();
}
And the following error was displayed:
Cannot open include file: 'osg/Node': No such file or directory
What am I missing?
Thanks,
Renan M Z Mendes
___
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] Debugging hangs on Cygwin compiled version [just won't let sleeping dogs lie]
Hi Brain, The stack trace is for basic mutex initialization, threading itself hasn't been kicked off my osgconv. Perhaps it'd be useful to just write a simple bit of code with an OpenThreads::Mutex that is created in a local scope to see if cywin is able to construct it OK, next up I'd try a ReentrantMutex to see if these reveals problems. Robert. On Tue, Apr 8, 2008 at 5:50 PM, Brian Keener [EMAIL PROTECTED] wrote: Robert, The cygwin group has made a few changes in their threading I noticed and also a couple changes to the debugger so I decided to give OSG a try just to see if we get closer. I did a little better getter a backtrace with a few things I picked up but still have a couple questions. Enclosed is a backtrace of the osgconvd at the point is generates a SIGSEGV. Not sure if this is much help at this point but I was curious if you can give me some idea what it might be using that causes the ??. I know that probably means I am working with a stripped non debug version of something - I'm just not sure what or how to find out. I am working with a debug version of the Cygwin Dll and the OSG application and libraries and I was able to do an strace of osgconvd running but I haven't had a chance to wade through it yet. Any ideas how I might carry this further. -- Brian Keener [EMAIL PROTECTED] /usr/local/bin/osgPlugins-2.3.7 $ gdb osgconvd GNU gdb 6.5.50.20060706-cvs (cygwin-special) Copyright (C) 2006 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type show copying to see the conditions. There is absolutely no warranty for GDB. Type show warranty for details. This GDB was configured as i686-pc-cygwin... (gdb) set args cow.osg brian.osg (gdb) set cygwin-exceptions on (gdb) run Starting program: /usr/local/bin/osgconvd.exe cow.osg brian.osg Loaded symbols for /cygdrive/c/WINDOWS/system32/ntdll.dll Loaded symbols for /cygdrive/c/WINDOWS/system32/kernel32.dll Loaded symbols for /usr/local/bin/cygosgDBd-2.3.7.dll Loaded symbols for /usr/local/bin/cygOpenThreadsd-2.2.1.dll Loaded symbols for /usr/bin/cygwin1.dll Loaded symbols for /cygdrive/c/WINDOWS/system32/advapi32.dll Loaded symbols for /cygdrive/c/WINDOWS/system32/rpcrt4.dll Loaded symbols for /cygdrive/c/WINDOWS/system32/secur32.dll Loaded symbols for /usr/local/bin/cygosgd-2.3.7.dll Loaded symbols for /cygdrive/c/WINDOWS/system32/glu32.dll Loaded symbols for /cygdrive/c/WINDOWS/system32/msvcrt.dll Loaded symbols for /cygdrive/c/WINDOWS/system32/opengl32.dll Loaded symbols for /cygdrive/c/WINDOWS/system32/gdi32.dll Loaded symbols for /cygdrive/c/WINDOWS/system32/user32.dll Loaded symbols for /cygdrive/c/WINDOWS/system32/ddraw.dll Loaded symbols for /cygdrive/c/WINDOWS/system32/dciman32.dll Loaded symbols for /usr/local/bin/cygosgUtild-2.3.7.dll Loaded symbols for /usr/local/bin/cygosgViewerd-2.3.7.dll Loaded symbols for /usr/local/bin/cygosgGAd-2.3.7.dll Loaded symbols for /usr/local/bin/cygosgTextd-2.3.7.dll Program received signal SIGSEGV, Segmentation fault. 0x610d5de9 in pthread_mutexattr_init (attr=0x23cb50) at /usr/develop/src/src/src/winsup/cygwin/thread.cc:123 123 if ((*object)-magic != magic) (gdb) thread apply all bt Thread 2 (thread 3936.0xe64): #0 0x7c90eb94 in ntdll!LdrAccessResource () from /cygdrive/c/WINDOWS/system32/ntdll.dll #1 0x7c90e288 in ntdll!ZwReadFile () from /cygdrive/c/WINDOWS/system32/ntdll.dll #2 0x7c801875 in ReadFile () from /cygdrive/c/WINDOWS/system32/kernel32.dll #3 0x0730 in ?? () #4 0x in ?? () Thread 1 (thread 3936.0xacc): #0 0x610d5de9 in pthread_mutexattr_init (attr=0x23cb50) at /usr/develop/src/src/src/winsup/cygwin/thread.cc:123 #1 0x610b2c98 in _sigfe () at /usr/develop/src/src/src/winsup/cygwin/cygerrno.h:31 #2 0x0023cb90 in ?? () #3 0x0004 in ?? () #4 0x0001 in ?? () #5 0x0028 in ?? () #6 0x0023cbb8 in ?? () #7 0x00ade1af in OpenThreads::ReentrantMutex::ReentrantMutex (this=0xc25ab0) at /usr/src/OpenSceneGraph/include/OpenThreads/ReentrantMutex:29 #8 0x00ade1af in OpenThreads::ReentrantMutex::ReentrantMutex (this=0xc25ab0) at /usr/src/OpenSceneGraph/include/OpenThreads/ReentrantMutex:29 ---Type return to continue, or q return to quit--- #9 0x00a474e7 in __static_initialization_and_destruction_0 ( __initialize_p=1, __priority=65535) at /usr/src/OpenSceneGraph/src/osg/GraphicsContext.cpp:188 #10 0x00a475ee in global constructors keyed to _ZN3osg15GraphicsContext27setWind owingSystemInterfaceEPNS0_24WindowingSystemInterfaceE () at /usr/src/OpenSceneGraph/src/osg/GraphicsContext.cpp:290 #11 0x61020493 in per_module::run_ctors (this=0x0) at /usr/develop/src/src/src/winsup/cygwin/dll_init.cc:54 #12 0x0001 in ?? () #13 0x610204e0 in dll::init (this=0x610208bc) at
Re: [osg-users] Building VirtualPlanetBuilder and osgdem on Windows
Hi Mike, The suggested dependency package, osgtoy.svn.sourceforge.net/svnroot/osgtoy/3rdParty/branches/ does not include GDAL. That's the 3rd party dependencies for OSG, not for VPB. OSG has no dependency on GDAL. Is there a new dependency package somewhere that contains ALL the necessary components and that has been checkout on Windows with the latest svn versions? Use FWTools (http://fwtools.maptools.org/) in addition to the OSG 3rd party dependencies. J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] http://www.cm-labs.com/ http://whitestar02.webhop.org/ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] why arent the .h postfix used in openscenegraph?
I agree that a C++ IDE should do the right thing for extensionless files and assume they are C++ -- especially in the case where they are listed as headers in the currently open project, for crying out loud :-). However, C++ IDEs aren't the only problem... Consider any one of dozens of general purpose text editors with support for source code syntax highlighting, which someone might use not just for editing extensionless headers, but also for editing raw text files with extensionless names like readme, passwd, and mnttab. Obviously I don't want C++ syntax highlighting in just any old file that happens to not have an extension. Files with extensionless names have existed long before C++, and many are still around today that have nothing to do with C++. It was a mistake for C++ to try to claim extensionless files as their own, a mistake that currently plagues us on this list in the form of quarterly discussions on the subject. Although adding .h extensions to OSG headers would go a long way towards eliminating this regular discussion topic, I'm certainly not calling for a change: I'm an old timer, who grew up writing code with black teletype text on rolls of white paper and punched cards (later, green CRT text on a black background), so I could care less whether syntax highlighting is available. Besides, as we all know, changing the headers to use .h is well-nigh impossible at this point, it would completely alienate the existing user base. However, I think lacking the .h extension is a mistake that I would rectify, were I to write a next-generation scene graph. -Paul _ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Osfield Sent: Tuesday, April 08, 2008 12:58 PM To: OpenSceneGraph Users Subject: Re: [osg-users] why arent the .h postfix used in openscenegraph? On Tue, Apr 8, 2008 at 4:58 PM, Paul Martz [EMAIL PROTECTED] wrote: As others have stated, the compiler doesn't care about the header extension and enforces no standard extension. Therefore, those of us in OSG can do whatever we want. Indeed, the osgPlugins routinely use a .h extension for their header files. The absence of an extension creates problems for code editors that present non-intuitive interfaces for controlling syntax highlighting. Appending .h to OSG headers would eliminate this confusion. There is a key difference between plugins and the includes is that plugins are not at all public so consistency is less critical, where as the include directories are the public face to the library so that everything has to be consistent, and in the OSG case its consistent with Standard C++ headers. As for using .h for telling editors that its a C++ file... well some editors interpret it as C file and apply different syntax highlighting than they do if its a C++ file. This is the reason why so many silly extensions for C++ files came into existence. Frankly if a modern C++ IDE doesn't interpret an extension header as C++ then its pretty dumb as the standard library itself has extensionless headers, one really has to question how well it supports Standard C++ if doesn't properly handle this basic fact of C++. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Building VirtualPlanetBuilder and osgdem on Windows
Robert Osfield wrote : Hi Mike, Could you try the SVN version of VPB as this may fix the CSLSetNameValue issue. The other errors suggest that your Windows files as different than other Windows users have. Could you specify the OS version etc. Robert. Well, I downloaded the April 1, 2008 SVN version. I'm using Windows XP Pro and Visual Studio 2005. The suggested dependency package, osgtoy.svn.sourceforge.net/svnroot/osgtoy/3rdParty/branches/ does not include GDAL. If I download the latest GDAL, the included Visual Studio 2005 (Version 8) build solution does not work correctly. Is there a new dependency package somewhere that contains ALL the necessary components and that has been checkout on Windows with the latest svn versions? Mike Greene ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] why arent the '.h' postfix used in openscenegraph?
The reasons for having extensionless header files have long been a question that I've never commented on (not just regarding OSG). Perhaps the people writing the standards were trying to boycott certain command line tools such as grep that can really benefit from having files with extensions... Who knows? Anyway, I never complained about it because, as the old saying goes, never look a gift horse in the mouth. I'll gladly put up with header files without the .h if it means getting to use a free tool like OSG. My 2 cents... Brian On Tue Apr 8 15:48 , Paul Martz sent: I agree that a C++ IDE should do the right thing for extensionless files and assume they are C++ -- especially in the case where they are listed as headers in the currently open project, for crying out loud :-). However, C++ IDEs aren't the only problem...  Consider any one of dozens of general purpose text editors with support for source code syntax highlighting, which someone might use not just for editing extensionless headers, but also for editing raw text files with extensionless names like readme, passwd, and mnttab. Obviously I don't want C++ syntax highlighting in just any old file that happens to not have an extension. Files with extensionless names have existed long before C++, and many are still around today that have nothing to do with C++. It was a mistake for C++ to try to claim extensionless files as their own, a mistake that currently plagues us on this list in the form of quarterly discussions on the subject.  Although adding .h extensions to OSG headers would go a long way towards eliminating this regular discussion topic, I'm certainly not calling for a change: I'm an old timer, who grew up writing code with black teletype text on rolls of white paper and punched cards (later, green CRT text on a black background), so I could care less whether syntax highlighting is available. Besides, as we all know, changing the headers to use .h is well-nigh impossible at this point, it would completely alienate the existing user base. However, I think lacking the .h extension is a mistake that I would rectify, were I to write a next-generation scene graph.   -Paul   From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Osfield Sent: Tuesday, April 08, 2008 12:58 PM To: OpenSceneGraph Users Subject: Re: [osg-users] why arent the .h postfix used in openscenegraph? On Tue, Apr 8, 2008 at 4:58 PM, Paul Martz [EMAIL PROTECTED] wrote: As others have stated, the compiler doesn't care about the header extension and enforces no standard extension. Therefore, those of us in OSG can do whatever we want. Indeed, the osgPlugins routinely use a .h extension for their header files. The absence of an extension creates problems for code editors that present non-intuitive interfaces for controlling syntax highlighting. Appending .h to OSG headers would eliminate this confusion. There is a key difference between plugins and the includes is that plugins are not at all public so consistency is less critical, where as the include directories are the public face to the library so that everything has to be consistent, and in the OSG case its consistent with Standard C++ headers. As for using .h for telling editors that its a C++ file... well some editors interpret it as C file and apply different syntax highlighting than they do if its a C++ file. This is the reason why so many silly extensions for C++ files came into existence.  Frankly if a modern C++ IDE doesn't interpret an extension header as C++ then its pretty dumb as the standard library itself has extensionless headers, one really has to question how well it supports Standard C++ if doesn't properly handle this basic fact of C++. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Directory not found
Sorry to ask you this, but is it in Project-Properties-References-Add Path? Renan ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] load image file and store as a node
Hi, So I was looking at: http://www.openscenegraph.org/index.php?page=UserGuides.Plugins Specifically: a)osg::ref_ptrNode node = osgDB::readNodeFile(cow.osg); and b)osg::ref_ptrImage image = osgDB::readImageFile(lz.rgb); I would like to load an image file (.bmp), which I believe I can do with a), but than I need to save it as a node. Is this possible? Thanks! -Bryan ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Directory not found
Hi Renan, It is in Project-Properties-Configuration-C/C++-General-Additional include directories Libraries path(s) are added at: Project-Properties-Configuration-Linker-General-Additional library directories Libraries (osg.lib osgDB.lib etc) go in: Project-Properties-Configuration-Linker-Input-Additional dependencies The paths can also be added to the MSVC environment: Tools-Options-Projects and solutions-VC++ Directories or Add paths to your environment variables INCLUDE and LIB In unsure you can always look at project settings on the OSG examples and applications, for example applications osgviewer in the main OpenSceneGraph.sln Mattias On Tue, Apr 8, 2008 at 10:28 PM, Renan Mendes [EMAIL PROTECTED] wrote: Sorry to ask you this, but is it in Project-Properties-References-Add Path? Renan ___ 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] vpb: flipped/mirrored elevation
Hi Robert et al, Turning off InterpolatedTerrainSampling does it for my sample data. That is - it did it using gdal 1.2.6. Following J-S advice I also tried using the gdal binaries from FWTools and then all is fine even with TerrainSampling. Just thought there was a point in notifying the Win32/vpb part of the community that the (old) 3rdParty_Win32binaries...zip might be flawing a bit. Mattias On Wed, Apr 2, 2008 at 10:00 AM, Robert Osfield [EMAIL PROTECTED] wrote: Hi Mattias, I regret the day that I added the manual coordinate system options to osgdem... its causes as much support as the rest of the VPB put together. Basically VPB is designed for use with geospatial imagery and dem's, fudging things using non geospatial data is a right pain as VPB really doesn't have proper coordinate system info to work with. So if you can use geospatial imagery, its much simpler w.r.t osgdem command line options and the vagaries of different data source being orientated in different ways is removed. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Directory not found
Hi, Mattias. Thanks for the information. Before that, I was having to use the examples' projects to create my own project, for I didn't know the whole configuration process. I've got one simple question, tough. You've said in your last email that: The paths can also be added to the MSVC environment: Tools-Options-Projects and solutions-VC++ Directories That's what I had done before. But what is it for? It seems that compiler won't look for the files needed in the places there specified. I could really use some information on this. Thanks again, and sorry for the trouble. Renan M Z Mendes ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] why arent the .h postfix used in openscenegraph?
On Tue, Apr 8, 2008 at 3:48 PM, Paul Martz [EMAIL PROTECTED] wrote: Consider any one of dozens of general purpose text editors with support for source code syntax highlighting, which someone might use not just for editing extensionless headers, but also for editing raw text files with extensionless names like readme, passwd, and mnttab. Obviously I don't want C++ syntax highlighting in just any old file that happens to not have an extension. Files with extensionless names have existed long before C++, and many are still around today that have nothing to do with C++. It was a mistake for C++ to try to claim extensionless files as their own, a mistake that currently plagues us on this list in the form of quarterly discussions on the subject. FWIW, there's no actual requirement in C++ that extensionless headers are actually without extension. It would be perfectly reasonable for #include foo to actually include a file named foo.hxx . The headers need not even exist. Also, competent format verification schemes do NOT look at the file extension. Example: /usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/include/g++-v4 $ file algorithm algorithm: ASCII C++ program text Although adding .h extensions to OSG headers would go a long way towards eliminating this regular discussion topic, I'm certainly not calling for a change: I'm an old timer, who grew up writing code with black teletype text on rolls of white paper and punched cards (later, green CRT text on a black background), so I could care less whether syntax highlighting is available. Besides, as we all know, changing the headers to use .h is well-nigh impossible at this point, it would completely alienate the existing user base. However, I think lacking the .h extension is a mistake that I would rectify, were I to write a next-generation scene graph. I consider it much more worthwhile to use something that's *not* .h, so that C++ headers are distinguished from those usable in both C and C++ and better match the source file names. Personally I prefer .hxx, to go along with .cxx source files, but since .cpp is so common, .hpp is perhaps a better choice. (Even if cpp does mean C Preprocessor.) *.?pp is a nice convenient glob, and even more so than can be done with *.h headers. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
