/*
    Copyright (c) 2024 Josh Britain (jbritain)
    Licensed under a custom non-commercial license.
    See LICENSE for full terms.

     __   __ __   ______   __  __   ______   __           __   __ __   ______   ______   ______   __   __   ______   ______    
    /\ \ / //\ \ /\  ___\ /\ \/\ \ /\  __ \ /\ \         /\ \ / //\ \ /\  == \ /\  == \ /\  __ \ /\ "-.\ \ /\  ___\ /\  ___\   
    \ \ \'/ \ \ \\ \___  \\ \ \_\ \\ \  __ \\ \ \____    \ \ \'/ \ \ \\ \  __< \ \  __< \ \  __ \\ \ \-.  \\ \ \____\ \  __\   
     \ \__|  \ \_\\/\_____\\ \_____\\ \_\ \_\\ \_____\    \ \__|  \ \_\\ \_____\\ \_\ \_\\ \_\ \_\\ \_\\"\_\\ \_____\\ \_____\ 
      \/_/    \/_/ \/_____/ \/_____/ \/_/\/_/ \/_____/     \/_/    \/_/ \/_____/ \/_/ /_/ \/_/\/_/ \/_/ \/_/ \/_____/ \/_____/ 
 
 



    By jbritain
    https://jbritain.net

*/

#include "/lib/common.glsl"

#ifdef vsh

out vec2 texcoord;

void main() {
  gl_Position = ftransform();
  texcoord = (gl_TextureMatrix[0] * gl_MultiTexCoord0).xy;
}

#endif

// ===========================================================================================

#ifdef fsh
#include "/lib/atmosphere/sky/sky.glsl"
#include "/lib/atmosphere/clouds.glsl"

in vec2 texcoord;

#include "/lib/dh.glsl"

#if GODRAYS > 0
/* RENDERTARGETS: 0,4 */
#else
/* RENDERTARGETS: 0 */
#endif

layout(location = 0) out vec4 color;

void main() {
  color = texture(colortex0, texcoord);

  float depth = texture(depthtex0, texcoord).r;
  vec3 viewPos = screenSpaceToViewSpace(vec3(texcoord, depth));
  dhOverride(depth, viewPos, false);

  #ifdef WORLD_THE_END
  if(depth == 1.0){
    color.rgb = getSky(color.rgb, mat3(gbufferModelViewInverse) * normalize(viewPos), true);
  }
  #endif



}

#endif