I think LÖVE 0.8.0 has some issues with properly allocating the texture units for the GLSL uniforms and it looks like you actually ran into this. I do not know a workaround for it. 0.9.0 had some changes in that area and should work better. This satisfies me because it doesn't put the blame on me :D

Crashes for me. Using Linux Mint. Never seen this one before: Error: [string "graphics.lua"]:1365: Cannot compile shader: 0:7(1): error: syntax error, unexpected EXTENSION, expecting $end stack traceback: [C]: in function 'newPixelEffect' [string "graphics.lua"]:1365: in functio...

Reading other posts you made, I conclude that my assumption is correct, despite the fact you failed to answer. I also conclude that you don't understand anything I'm doing, and I advise you to leave me and my untouchable algorithms alone. From this point on, I will no longer communicate with you.

Gravy wrote:I sort of understand what's causing the glitch

What do you think is causing it?

I prefer LAU.

This was just gonna be a small and fun sand/substance project :c Try tracing the problem down with first off not using shaders. Those are tough sons of a bitches and pretty complex things, and if something goes wrong you wouldn't know what went wrong, because everything just seem to be right. Just l...

I dunno, when fragments are generated, graphics card computes in hardware floating point texture coordinates, so you'd just have to directly sample the texture with them. Given that sampling function performs texture interpolation (TUN-DUN-DUUUN), you would normally have antialiased image sampled. ...

Would you kindly post the error?

Doesn't show what it should, doesn't draw on the canvas, doesn't run at all. Clicking the mouse should draw on the screen, why does nothing happen?

Quaternions are the shiz.