/Shadertoy2GM

This javascript webapp converts GLSL code from shadertoy.com to Gamemaker GLSL ES as well as output other necessary code to run.

Primary LanguageJavaScript

logoShadertoy2GM

This javascript webapp converts GLSL code from shadertoy.com to Gamemaker GLSL ES as well as output other necessary code to run.

What does it do?

  • Adds varying vec2 fragCoord;
  • Replaces void MainImage() with void main(void).
  • Replaces fragColor with gl_FragColor.
  • Replaces all instances of texture to texture2D.
  • Replaces all instances of iChannel0 to gm_BaseTexture.
  • Replaces all instances of iTime to iGlobalTime.
  • Adds uniform vec3 iResolution; if iResolution.xy is found, else...
  • ...Adds uniform float iResolution; if iResolution is found
  • Adds uniform float iGlobalTime;.
  • Edits the pow(x, y) function to pow(abs(x), y)
  • Outputs vertex, fragment, create event, and draw event.
  • Warns of incompatible commands.

This works for simple shaders. More complex shaders require more manual work on your part.

Shader Inputs Supported
iResolution ✔
iTime ✔
iTimeDelta ❌
iFrame ❌
iChannelTime ❌
iChannelResolution ❌
iMouse ❌
iChannel0 ✔
iDate ❌
iSampleRate ❌

What did I learn?

✔️JavaScript text processing.

Any feedback is welcome! :)

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