Re: [osg-users] cross axes

Hi Gianni Thank you for your reply. It's ok I finally got it working. Jonathan On Wed, Aug 11, 2010 at 9:34 AM, Gianni Ambrosio ga...@vi-grade.com wrote: Sorry Jonathan for the delay. Unfortunately I don't remember exactly which modifications I did but if you need I can give you my actual

Re: [osg-users] cross axes

Hi Gianni, I'm trying to get working your example with the modification suggested by David but the axis appears to be drawn outside of my window. If I disable Can you tell me what modification did you perform on your NodeCallback implementation to get it working? Thanks Jonathan On 7/1/10,

Re: [osg-users] Howto use osg with a given OpenGL rendering context?

Hi, is this approach allows the use of FBO? thanks Jonathan On Wed, Feb 25, 2009 at 7:03 AM, Robert Osfield robert.osfi...@gmail.comwrote: Hi Mattias, The quickest way to graft and osgViewer::Viewer into an existing graphics context is to use the GraphicsWindowEmbedded functionality. See

Re: [osg-users] problem with blending when using floating point FBO

Glad you got it working! Is there a reason you didn't just attach an osg::Texture to your camera and set the number of samples greater than 1 in the attach call? Well I did attach a texture to my camera and set the number of samples greater than 1...see: osg::ref_ptrosg::TextureRectangle

Re: [osg-users] problem with blending when using floating point FBO

Ok I was able to get it working by getting the resolved fbo using the RenderStage::getMultisampleResolveFramebufferObject method. Here a subset of my code in the draw callback: osgViewer::Renderer * renderer = static_castosgViewer::Renderer*(renderInfo.getCurrentCamera()-getRenderer());

Re: [osg-users] problem with blending when using floating point FBO

glReadPixels does not work with a multisample FBO (check glGetError after your glReadPixels to see); yes you are right, I get a GL_INVALID_OPERATION after the call of glReadPixels you have to use glBlitFramebuffer to copy the multisample FBO to a FBO without multisampling to resolve the samples

Re: [osg-users] problem with blending when using floating point FBO

The result is an FBO without multisampling whose buffers are filled by combining the multiple samples from the multisample FBO together. Ok so the FBO multisampling is supported but not directly as it said on http://www.opengl.org/wiki/GL_EXT_framebuffer_object_More_about_FBOs Are multisample

Re: [osg-users] problem with blending when using floating point FBO

How did you test that setting both to 4 didn't work? This is how I tested it: // Reading back the FBO does not work when it is disabled after render -- set this property of the // renderStage to false. A workaround is to enable glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, frameBufferObjectID) in

Re: [osg-users] problem with blending when using floating point FBO

, 2009 at 11:09 AM, Jonathan Richard jonathan.richa...@gmail.com wrote: Ok thank you for the advice. I'm not very familiar with the shader programming yet, but I'm suppose to get into it soon. The problem that I see is how to get access to the facet from the shader. If I'm into a fragment shader

Re: [osg-users] problem with blending when using floating point FBO

As =1. Thanks, Jonathan 2009/5/26 J.P. Delport jpdelp...@csir.co.za Hi, Jonathan Richard wrote: |// Tell to sort the mesh before displaying it |AFAIK OSG does not sort at the triangle level, there is an option to make the sorting happen at a primitive level, but I think

[osg-users] 16 bits per component off-screen rendering

Hi, I would like to perform 16 bits per component off-screen rendering. In particular I need that each color channel (RGBA) be in 16 bits. I red that it maybe possible by using the framebuffer object extension. Can someone can confirm to me that this is possible? Does OpenSceneGraph 2.2 support

[osg-users] how to force a setClearColor call

Hi, I'm using a sceneView and I would like to execute a sceneView-setClearColor between the cull and the draw but it seems that the calls has no effect on the first draw. It has effect only on the next draw. Is it possible to force the setClearColor to be apply on the next draw? Thanks

[osg-users] infinite loop

Hi, does the osgProducer::Viewer (I use osg 1.2) is suppose to work if the WGL_ARB_PIXEL_FORNAT is not supported? It seems fall in an infinite loop ( in the method VisualChooser::choose( Display *dpy, int screen, bool strict_adherence) ) when this extension is not supported. The variable failed

Re: [osg-users] infinite loop

. Curiously I don't recall any reports of inifinite loops under 1.2. What hardware are you working on? Have you tried updating the OpenGL drivers? Robert. On 10/3/07, Jonathan Richard [EMAIL PROTECTED] wrote: Hi, does the osgProducer::Viewer (I use osg 1.2) is suppose to work

Re: [osg-users] using Mesa instead of opengl

Did you use glut on top of Mesa? Does glut support 16 bits/32 bits color channel? If not do you know another toolkit that can be use instead of glut? Thanks Jo On 9/25/07, J.P. Delport [EMAIL PROTECTED] wrote: Hi, we have used it with OSMesa to get float colour channels. jp Jonathan

[osg-users] using Mesa instead of opengl

Hi, did someone try to run open scene graph with Mesa instead of opengl? Is it working? Or is it possible to use 16 bits color channel with opengl instead of 8 bits color channel? Thanks Jo ___ osg-users mailing list osg-users@lists.openscenegraph.org