Shader Redstone 3 MANUAL (2019-11-28)

Changes from Shader Redstone 2:

Improved UI (WIP).
Full 3D world to edit.
AA, AO, Vignette and more effects.
Instant energy propagation through Redstone dust (like Minecraft, allows for accurate clocks).
Player movement.

Notes:

Currently Buffer A Can't compile on Windows because ANGLE's DirectX 9 backend (Used by default on Chrome and Firefox on Windows) doesn't fully implement WebGL 2. It tries to force unroll loops which are impossible to unroll in the pathfinding function.
Cannot power a stone block using Redstone dust yet except if it's under it, and that's an extra update.
This was partly inspired by Javascript Redstone Simulator.
I used RNG code from Hash Without Sine 2 (WebGL 2).
I used a SDF font code for the UI from Shadertext Proportional Spacing.

Rules:

Anything which is bright red is lit and anything which is dark red is unlit.
Torches are lit by default.
Dust is unlit by default.
Energy from torches spreads through dust (OR operator).
If a stone block is powered, any torch attached to the block will be off (NOT operator).

Default Controls:

You can move around in the XY plane using WASD by default.
You can zoom up or down using Q and E by default.
You can move quicker using LSHIFT.
You can place blocks using F, and remove using R.
You can switch selected item using LEFT and RIGHT (arrows).
You can change Z layer using DOWN and UP (arrows).

Creating Basic Logic Gates:

The OR gate:

The NOT gate (unary):

The AND gate:

Output should be true only when both inputs are true.

The XOR gate:

Output should be true only when either A or B is set to true.

Full adder circuit: