Hi, Every One.
I have a pre render camera in my scene graph. and i have set the clear
mask by GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT, set the color mask by
four tures parameters. and the clear color by osg::Vec4(0.0, 0.0, 0.0,
0.0)(other clear colors I have tried also); And then I attach the camera to
a texture or a image( also have four color channels ).
Every thing is OK except the result of alpha channel. there is always
1.0(It should be 0.0 because of the clear color), I don't know why.
Merry ChristMas And Happy New Year.
Best Wishes.
David.
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