Hi there,
I'm trying to copy the render of a viewport into a texture with a
TextureGrabForeground to do some multipass.. here's my code..
ImagePtr img = Image::create();
addRefCP(img);
beginEditCP(img);
img->set(Image::OSG_RGBA_PF,1);
endEditCP(img);
TextureChunkPtr tex = TextureChunk::create();
addRefCP(tex);
beginEditCP(tex);
tex->setImage(img);
tex->setMinFilter(GL_NEAREST);
tex->setMagFilter(GL_NEAREST);
tex->setInternalFormat(GL_RGBA8);
tex->setExternalFormat(GL_RGBA);
tex->setScale(true);
endEditCP(tex);
TextureGrabForegroundPtr tg = TextureGrabForeground::create();
addRefCP(tg);
beginEditCP(tg);
tg->setTexture(tex);
endEditCP(tg);
is there something wrong in these lines? Cause the alpha channel is
1.0 everywhere.. even if the shader i used to render the viewport in
the previous step has a global alpha of 0.5!
Thanks,
Stefano
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