shaders/scene_font.fs

   1 uniform sampler2D uTexGarbage; // unused
   2 uniform sampler2D uTexMain;    // unused
   3 uniform vec3 uCamera;
   4 uniform float uTime;
   5 uniform float uOpacity;
   6 uniform float uColourize;
   7
   8 #include "common_scene.glsl"
   9 #include "motion_vectors_fs.glsl"
  10
  11 vec3 pal( float t ){
  12    vec3 a = vec3(0.30,0.3,0.3);
  13    vec3 b = vec3(0.8);
  14    vec3 c = vec3(0.28,0.3,0.4);
  15    vec3 d = vec3(0.00,0.1,0.1);
  16    return a + b*cos( 6.28318*(c*t+d) );
  17 }
  18
  19 void main(){
  20    compute_motion_vectors();
  21    vec3 vfrag = vec3(0.5,0.5,0.5);
  22    vec3 qnorm = aNorm.xyz;
  23
  24    //vec4 vsamplemain = texture( uTexMain, aUv );
  25    //vfrag = vsamplemain.rgb;
  26
  27    vec4 spread0 = uTime*0.0002*vec4(  17.3,-19.6, 23.2,-47.7 );
  28    vec4 spread1 = uTime*0.0002*vec4( -13.3, 12.6,-28.2, 14.7 );
  29
  30    vec2 p = aCo.xy + vec2(0.3);
  31    float a = atan( p.y/p.x );
  32    vec4 v0 = step( vec4(0.5), fract(vec4(a) + spread0) );
  33    vec4 v1 = step( vec4(0.5), fract(vec4(a) + spread1) );
  34
  35    float d = ( v0.x+v0.y+v0.z+v0.w +
  36                v1.x+v1.y+v1.z+v1.w ) * 0.125;
  37
  38    float dither = fract(dot(vec2(171.0,231.0),gl_FragCoord.xy)/71.0);
  39    float x = d*0.8+length(p)*0.3;
  40    x = (floor(x*8.0) + step(dither, fract(x * 8.0))) / 8.0;
  41
  42    if( x + (uOpacity*2.0-1.0) < 0.5 )
  43       discard;
  44
  45    vfrag = mix( vec3(x), pal( x ), uColourize );
  46
  47    if( g_light_preview == 1 ){
  48       vfrag = vec3(0.5);
  49    }
  50
  51    vfrag = scene_compute_lighting( vfrag, qnorm, aWorldCo );
  52    oColour = vec4( vfrag, 1.0 );
  53 }