Hi,
On 14/07/2011 16:08, Bolstad, Mark wrote:
I like the idea of combining the passes into one, but if I had a blue
object and had to mask it into the red channel, wouldn't it just be black?
I had talked to a professor who had suggested a one-line fragment shader
to do RGB-> Luminance and use Color Masking to write into the
appropriate channel. Would rendering straight into a Luminance texture
with Color Masking work?
In reality, this is actually more complicated in that it's not three
objects, but three separate frames of animation. So the main loop is:
while(1)
{
advance sim
frame(); // Render to red
advance sim
frame(); // Render to green
advance sim
frame(); // Render to blue
Render RTT texture to display.
}
Thanks for the suggestions and any further advice.
I think you're at the stage where you should just try :)
Trying it out in my head I'm quite sure rendering to 3 luminance and
then combining in extra step would work. Fragment shader that
distributes colours to all channels with color masks should also work.
jp
Mark
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On Jul 14, 2011, at 8:58 AM, Jean-Sébastien Guay wrote:
Hi Mark, JP,
I think easiest would
be to render to 3 luminance textures and then combine in another step
into rgb.
Why not render 3 passes into the same RGB texture but just write to
one channel per pass using color masking? You'd save the combine pass.
J-S
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