Is it possible to render to one of RenderTexture's mipmap level while sampling from other levels?
The situation is i want to downscale a texture 4 times using shader, i could put all these intermediate results together on a big texture (at level 0, no mip levels) but i don't know how to handle texture cell edges (GL_CLAMP, GL_REPEAT), another way would be to create 4 FBOs but it's not as convenient as using same texture different mipmap levels.
what do you say?
thank you.