Hi,
I'm having trouble attaching integer format textures to an FBO camera. The
following code:
Code:
#include "stdafx.h"
#include <osgViewer/Viewer>
#include <osg/Texture2D>
int main(int argc, char* argv[])
{
osg::ref_ptr<osg::Texture2D> targetTex = new osg::Texture2D;
targetTex->setTextureSize(800, 600);
targetTex->setFilter(osg::Texture2D::MIN_FILTER, osg::Texture2D::NEAREST);
targetTex->setFilter(osg::Texture2D::MAG_FILTER, osg::Texture2D::NEAREST);
targetTex->setInternalFormat(GL_R32UI);
targetTex->setSourceFormat(GL_RED);
targetTex->setSourceType(GL_UNSIGNED_INT);
osg::Camera* rttCamera = new osg::Camera;
rttCamera->setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OBJECT);
rttCamera->attach(osg::Camera::COLOR_BUFFER, targetTex);
osgViewer::Viewer viewer;
viewer.setSceneData(rttCamera);
return viewer.run();
}
will produce:
Code:
RenderStage::runCameraSetUp(), FBO setup failed, FBO status= 0x8cd6
Warning: detected OpenGL error 'invalid operation' at start of State::apply()
RenderStage::runCameraSetUp(), FBO setup failed, FBO status= 0x8cd6
If I replace the format selection lines with:
Code:
targetTex->setInternalFormat(GL_R32F);
targetTex->setSourceFormat(GL_RED);
targetTex->setSourceType(GL_FLOAT);
everything returns to normal (no errors).
Am I missing something obvious? I am using version 3.1.4 and I have a GTX 480
with OpenGL 4.3 driver support (I have compute shaders working, so I should be
relatively up to speed!).
Thank you!
Cheers,
Michael
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=53878#53878
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