addShaderToyUniforms method
void
addShaderToyUniforms()
**** ADD SHADERTORY UNIFORMS
this will add
vec4 iMouse
vec3 iResolution
float iTime
Sampler2D iChannel0-3
These are automatically set when using setShaderToy
Implementation
void addShaderToyUniforms() {
return _addShaderToyUniforms();
}