Hi,
Gottfried Gross wrote:
Hi JP,
what I meant is, that I need to call glDrawBuffer (or setDrawBuffer in OSG) to
select the buffer that I want to clear. Sorry, that I did not make it clear.
The following OpenGL code example shows what I want to realize in OSG:
Code:
//for each frame do
id = id mod 2; // Id is switched in[0, 1]
glDrawBuffer(buffers[Id]); // select Buffer
glClearColor( 0.1, 0.2, 0.3,0. 4); // choose color
glClear(GL_COLOR_BUFFER_BIT); // apply color
glDrawBuffer(buffers[2]); // select Buffer
glClearColor(0, 0, 0, 0); // choose color
glClear(GL_COLOR_BUFFER_BIT); // apply color
id += 1;
OK, here is what I would have done. It's probably not the only way, and
I normally tend to using FBOs.
Create a camera for each of the buffers 0-2. Set the clear colour on the
cameras appropriately. Do the swap using an osg::Switch node above the
first two cameras so that only one of them is used per frame (an example
is in osggameoflife).
jp
So I have 3 buffers and want to initialize 2 of them each frame with different
values and also switch one of them each frame. I hope this explains my
problem(s).
Thx,
Gottfried[/code]
------------------
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http://forum.openscenegraph.org/viewtopic.php?p=24023#24023
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