#version 120
/*
Sildur's Enhanced Default:
https://www.patreon.com/Sildur
https://sildurs-shaders.github.io/
https://twitter.com/Sildurs_shaders
https://www.curseforge.com/minecraft/customization/sildurs-enhanced-default

Permissions:
You are not allowed to edit, copy code or share my shaderpack under a different name or claim it as yours.
*/

#define composite0
#include "shaders.settings"

varying vec2 texcoord;
varying vec4 color;
#ifdef Godrays
varying vec2 lightPos;
#endif
uniform vec3 sunPosition;
uniform mat4 gbufferProjection;

void main() {
	gl_Position = ftransform();
	texcoord = (gl_MultiTexCoord0).xy;
#ifdef Godrays	
	vec4 tpos = vec4(sunPosition,1.0)*gbufferProjection;
	tpos = vec4(tpos.xyz/tpos.w,1.0);
	vec2 pos1 = tpos.xy/tpos.z;
	lightPos = pos1*0.5+0.5;
#endif

	color = gl_Color;
}