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Shadertoy compatibility

RITEG.V2 is designed to be almost compatible with Shadertoy shaders and pipelines. In fact, here's an example of a pipeline that has been directly copy-pasted from RITEG

Semi-supported uniform values

  • iMouse is always filled with zero values as if the host machine had no mouse attached while running Shadertoy in browser
  • iDate is always filled with zero values as if it was day 00 of month 00 of year 0000

RITEG extensions

  • There is a #define RITEG 1 macro present
  • If the RITEG macro is defined, there is an additional 16-float array named iParam 
#ifdef RITEG
#define BLOCK_WIDTH     iParam[0]
#define BLOCK_HEIGHT    iParam[1]
#define SIZE_RATIO_X    iParam[2]
#define SIZE_RATIO_Y    iParam[3]
#else
#define BLOCK_WIDTH     8.0
#define BLOCK_HEIGHT    8.0
#define SIZE_RATIO_X    0.5
#define SIZE_RATIO_Y    0.5
#endif