CHEAT SHEET - GLSL TO UNITY SHADERS

CONVERT FROM GLSL - TO - UNITY SHADERLAB HLSL (CG):
---------------------------------------------------

SYNTAX:
-------
vec<n>                  - float<n>
mat<n>                  - float<n>x<n>
fract                   - frac
mix                     - lerp
mod                     - x-y*floor(x/y)
atan(x,y)               - atan2(y,x)
texture                 - tex2D

TYPE CASTING:
-------------
vec3(1) ok              - float3(1) not ok, float3(1,1,1) or 1
vec3 a = 1 not ok       - float3 a = 1 ok

INITIALIZED GLOBAL VARIABLES:
-----------------------------
vec3 up = vec3(0,1,0)   - static float3 up = float3(0,1,0)

MATRIX MULTIPLICATION:
----------------------
use *                   - use mul()

SPECIFICS:
----------
MAIN FUNCTION   - mainImage             - frag or surf
UV COORDS       - fragCoord/iResolution - i.uv or IN.uv_MainTex
TIME            - iTime                 - _Time.y
MOUSE           - iMouse                -                           *Must manually add*
FINAL COLOR     - fragColor = color     - return color
TEXTURES        - iChannel<n>           -                           *Must manually add*
BOILERPLATE     - None                  -                           *Many*

***
***  Additional trick: instead of  replace "vec" with "float" ,  in HLSL we can define own data types,
***  so you can write following instruction: typedef vector ** <float, 2> vec2; typedef vector <float, 3> vec3;
***