// MinecraftPT — Sky_End_FS
// End dimension sky rendering pass.

#include "/Lib/Settings.glsl"
#include "/Lib/BasicFunctions/LightingConstants.glsl"
#include "/Lib/Utilities.glsl"
#include "/Lib/IndividualFunctions/EndSky.glsl"

uniform sampler2D depthtex0;

layout(location = 0) out vec4 colorOut;

void main(){
	ivec2 texelCoord = ivec2(gl_FragCoord.xy);

	float depth = texelFetch(depthtex0, texelCoord, 0).r;
	if (depth < 1.0){
		discard;
	}

	vec4 viewPos = gbufferProjectionInverse * vec4(vec2(texelCoord) / screenSize * 2.0 - 1.0, 1.0, 1.0);
	vec3 viewDir = normalize(viewPos.xyz / viewPos.w);
	vec3 worldDir = normalize(mat3(gbufferModelViewInverse) * viewDir);

	vec3 color = GetEndSky(worldDir, GetSunDirWorld());

	colorOut = vec4(color, 1.0);
}