Hi,
I need to draw a large dynamic texture rectangle (1920x1080 video) on a screen 1280x1024. when I display the texture at the native size, i don’t see all the texture. Can I expect better performance If don’t draw all the rectangle texture but just a 1280x1024 rectangle (if I adjust the texture coordinate ) or the graphic card do an automatic outside parts clipping ? I use fragment shader on the texture and I don’t wants that fragment shader operate on outside screen pixel .
regards