shaders/scene_override.fs

   1 uniform sampler2D uTexGarbage;
   2 uniform sampler2D uTexMain;
   3 uniform vec3 uCamera;
   4 uniform vec4 uPlane;
   5
   6 uniform vec4 uPlayerPos; /* w: distance to uSpawnPos */
   7 uniform vec4 uSpawnPos;  /* w: inverse distance to uPlayerPos */
   8 uniform bool uAlphatest;
   9 uniform vec4 uMapInfo; /* x: min, y: max, z: iso line amount */
  10
  11 #include "light_clearskies_stddef.glsl"
  12 #include "common_scene.glsl"
  13 #include "motion_vectors_fs.glsl"
  14
  15 vec2 smin( float a, float b, float k ){
  16    float h = max( k-abs(a-b), 0.0 )/k;
  17    float m = h*h*0.5;
  18    float s = m*k*(1.0/2.0);
  19
  20    if( a < b )
  21       return vec2(a-s,m);
  22    else
  23       return vec2(b-s,1.0-m);
  24 }
  25
  26 void main(){
  27    vec2 ssuv = gl_FragCoord.xy;
  28    vec3 vDither = vec3( dot( vec2( 171.0, 231.0 ), ssuv) );
  29    float dither = fract( vDither.g / 71.0 ) - 0.5;
  30
  31    float dcam = (-8.0+distance( aCo, uCamera ))/4.0;
  32    float dy0 = aCo.y - uMapInfo.x;
  33    float dy1 = uMapInfo.y - aCo.y;
  34
  35    if( min(min(dy0,dy1)*0.5, dcam) + dither < 0.51 )
  36       discard;
  37
  38    compute_motion_vectors();
  39
  40    vec3 vfrag = vec3(0.898,0.811,0.716);
  41    vec3 qnorm = aNorm.xyz;
  42
  43    qnorm = normalize(floor(aNorm.xyz*4.0)*0.25);
  44    qnorm += vec3(0.001,0.0,0.0);
  45
  46    if( uAlphatest ){
  47       vec4 vSample = texture( uTexMain, aUv );
  48       if( vSample.a < 0.5 )
  49          discard;
  50    }
  51    else{
  52    }
  53
  54    vfrag = scene_compute_lighting( vfrag, qnorm, aWorldCo );
  55
  56    // dots
  57    float d0 = distance( aCo, uPlayerPos.xyz )*2.0;
  58    float d1 = distance( aCo, uSpawnPos.xyz );
  59
  60    vec2 dm = smin( d0, d1, 10.0 );
  61    float dd = fract(dm.x*0.2-g_realtime*0.5) *
  62                max(0.0,1.0-dm.x*0.04) *
  63                max(0.0,qnorm.y);
  64    vec3 emit = mix(vec3(1.0,0.0,0.0),vec3(0.0,1.0,0.0),dm.y)*dd;
  65
  66    // line
  67    vec3 v0 = (uSpawnPos.xyz-uPlayerPos.xyz)*uSpawnPos.w;
  68    float t = clamp( dot(aCo-uPlayerPos.xyz,v0), 0.0, uPlayerPos.w );
  69    vec3 p0 = uPlayerPos.xyz + v0*t;
  70    float d3 = distance(p0,aCo);
  71    emit += vec3(fract(t*0.2-g_realtime+d3*0.2)*max(0.0,1.0-d3*0.2));
  72
  73    vfrag += emit;
  74
  75    if( uMapInfo.z > 0.0 ){
  76       float height = fract( aCo.y * 0.1 );
  77       float lg = 2.0*length(vec2(dFdx(height), dFdy(height)));
  78       vfrag *= 1.0f+(lg*0.2*uMapInfo.z);
  79    }
  80
  81    oColour = vec4( vfrag, 1.0 );
  82    //oColour = vec4( vfrag, 1.0 );
  83 }