Hi,
Basically I wanted to know if calling glClear with all buffers bits to clear is faster than clearing them all individually.
So:
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
is faster thabn:
glClear(GL_COLOR_BUFFER_BIT);glClear(GL_DEPTH_BUFFER_BIT);
glClear(GL_COLOR_BUFFER_BIT);
glClear(GL_DEPTH_BUFFER_BIT);
Cheers!
It depends on where the clears are.
If they are before any glDraw...() calls in the render pass, then they will be combined. On Mali this is a free "start of tile" initialization. If they are after any draws then they will not be combined, and will be a "not free" shader-based clear.
Thanks! This is what I wanted to confirm. The individual glClears are one after the other without any other GL call in between.