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edits
Changes
→To Do
*save tile number along with x and y pos for each camera
'''Refocuser'''
*GLSL optimizations - https://www.opengl.org/wiki/GLSL_Optimizations
*GLSL reference (OpenGL 3.3, GLSL 1.5) https://www.khronos.org/files/opengl-quick-reference-card.pdf
*read multiple, arbitrary textures, including tile num for each camera (along with x and y pos)