Hi again,
I have already set my RTT color buffer as RGBA; the texture attached
to the camera is an osg::TextureCubeMap that I'm setting it up with
texture->setInternalFormat( GL_RGBA );
texture->setSourceFormat( GL_RGBA );
texture->setSourceType( GL_FLOAT );
and using
std::cerr <<
_Cameras[i]->getBufferAttachmentMap()[osg::Camera::COLOR_BUFFER]._internalFormat
<< std::endl;
prints GL_RGBA. I have already set the camera's clear color to an
alpha of 0 with
osg::Vec4 color ( 0.0, 1.0, 0.0, 0.0 );
cam->setClearColor( color);
I have also tried
cam->attach( osg::Camera::COLOR_BUFFER, GL_RGBA );
Before attaching my texture, but probably this isn't related.
-Coz
> You'll need to make sure that the clear colour has an alpha of 0, and
> that you RTT cololur buffer is RGBA.
>
> [...]
>
>> I have a RTT camera for cube mapped reflections; it now works well,
>> except that I want to show only the reflected objects, not the clear
>> color, when applied to an object; I have tried using the clear color's
>> alpha with TexEnv, TexEnvCombine and AlphaFunc but I never got the
>> result I wanted.
>>
>> Any pushes in the right direction?
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