Oh my god.!!!!!
Thank you ! Mr.Valentine.You are very kind.
Yes. my 2x2 rectangle is just example.
and i don't need 3D(quad) object. just only 2D.(super fast...)
so i'm question setpixel.
because First. Big texture(1920x1080) create.
and texture setPixel (10x10 or 4x4 or ...rectangle).
Last only one draw call texture.
This is example. i want many rectangle one draw.
I don't need 3D. just 2D fast draw.
Thank you for your advice.