I'm getting all 0s for my pixel buffer when I use GL_RGBA32F_ARB as the pixel
format.
It works fine with GL_RGBA.
This is how I set it up:
i = new osg::Image();
i->setPixelFormat(GL_RGBA32F_ARB);
i->setDataType(GL_FLOAT);
camera->attach(osg::Camera::BufferComponent(osg::Camera::COLOR_BUFFER0),i.get());
camera->setRenderOrder(osg::Camera::PRE_RENDER);
camera->setRenderTargetImplementation(osg::Camera::PIXEL_BUFFER);
Then when I try to retrieve the pixel values:
if (_image.valid() && _image.get() && _image.get()->data())
{
float *tempData = (float*)_image.get()->data();
for (int i = 0; i < sliceVPX * sliceVPY; i+=4)
{
debug<<Debug::info<<"Pix ["<<i<<"] = "<<tempData[i]<<",
"<<tempData[i+1]<<", "<<tempData[i+2]<<", "<<tempData[i+3]<<"\n";
}
}
I get all zeros.
Can anyone help me out. again using GL_RGBA and GL_UNSIGNED_BYTE works fine.
I'm using OSG 2.2
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http://forum.openscenegraph.org/viewtopic.php?p=8184#8184
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