[WIP] Canvas rendertarget emulation#380

Open

scheibel wants to merge 2 commits intomasterfrom

canvas_rendertarget_emulation

Commits on Jul 5, 2017

Emulate target framebuffer attachments if a render stage requests unsatisfiable attachment types
scheibel
committed

Commits on Jul 6, 2017

Merge branch 'master' into canvas_rendertarget_emulation
scheibel
committed