On 02/16/2011 10:44 AM, Eric Sokolowsky wrote:
Hello,
Does anyone have suggestions on getting the textured version brighter,
hopefully as bright as the DrawPixels version?
The textured version is probably getting dimmer because of the linear
magnification filter. Since your background is black, any pixels in the
image that are partially covering a pixel on the screen are getting
mixed with the black background and the overall luminance is lessened
because of that. The DrawPixels version is obviously blocky because
you're drawing without any kind of magnification filter. If you
switched the mag filter settings on the texture version to GL_NEAREST
instead of GL_LINEAR, I imagine your results will look very much like
the DrawPixels version.
Of course, the real problems is that you're rendering the given image to
a resolution that is significantly larger than its actual size.
Ideally, you'd want to enlarge the original image to as close to the
target resolution as you can before using the texturing operations to
draw it to the screen. I don't know the source of the image, so I don't
know if it's possible or practical to do this, but that would be the
best solution.
--"J"
_______________________________________________
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
