It still not working (I debug fbos powered by glslDevil)
As my RTT loop implements a minimization of a selected channel I also test an
assumption that ping pong textures would not be required for my use.
I have then wrote an implementation that read/write the same texture.
only one camera attached to a fbo binded on outtexture
and childs are myGeometry2 that perform occlusion queries whose stateset use
the same outputtexture as input Texture sampler...
But curiously I have a strange issue:
It work if I use 1 only occQuery but not with several...
->Debugging fbos with glsldevil shows me a correct execution of the process but
when i launch it outside the display seems to get stuck
unless i cout some stuff during display and switch alt-TAB between commandline
and osgviewer windows:
It's seems that curiously queries results are made up to date only with this
hack...
Anyone have experienced this kind of problem?
[quote="mp3butcher"]For the moment I do a silly thing in order to create FBOs
attached to the current contextID:
I init it at the first drawImplementation call like it:
All vars are pointers in order to be modified inside drawimplementation
Code:
myGeometry::initFBOs{
*_ext=osg::FBOExtensions::instance(contextID,true);
*fbos=new GLuint[2];
(*_ext)->glGenRenderbuffersEXT(2, *fbos);
(*_ext)->glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, (*fbos)[0]);
//Dont know if its needed for my use
//(* _ext)->glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT,
256, 256);
//(* _ext)->glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,
GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, (*fbos)[0]);
(*_ext)->glFramebufferTexture2DEXT(GL_DRAW_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_RECTANGLE,
_OutTexture2->getTextureObject(contextID)->_id, 0);
(*_ext)->glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
(*_ext)->glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, (*fbos)[1]);
//(*_ext)->glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT,
256, 256);
//(*_ext)->glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,
GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT,(*fbos)[ 1]);
(*_ext)->glFramebufferTexture2DEXT(GL_DRAW_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_RECTANGLE,
_fimpass->_OutTexture->getTextureObject(contextID)->_id, 0);
(*_ext)->glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
}
Am I wrong?
Frederic Bouvier wrote:
> Hi Julien,
>
> aren't you supposed to attach a texture to the framebuffer ? I don't see a
> call to glFramebufferTexture2D or something equivalent in your code.
> In OSG term, it's the Camera::attach method that should be called.
>
> -Fred
:-*
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=28609#28609
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