Prefix to compile Shadertoy shaders to Vulkan/SPIR-V

prefix.shader

// pasting this in front of most shadertoys allows them to be compiled with:
// glslangValidator -V inputFile.frag -o outputFile.spv
#version 430
layout(binding = 1, std140) uniform glob {
uniform vec3	iResolution;
uniform float	iGlobalTime;
uniform float	iTimeDelta;
uniform int	iFrame;
uniform float	iFrameRate;
uniform float	iChannelTime[4];
uniform vec3	iChannelResolution[4];
uniform vec4	iMouse;
uniform vec4	iDate;
uniform float	iSampleRate;
};
uniform sampler2D	iChannel0;
uniform sampler2D	iChannel1;
uniform sampler2D	iChannel2;
uniform sampler2D	iChannel3;
void mainImage( out vec4 fragColor, in vec2 fragCoord );
in vec2 _fragCoord;
out vec4 _fragColor;
void main() { mainImage (_fragColor, _fragCoord); }
#define texture2D texture