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 "light_clearskies_stddef.glsl"
   9 #include "common_scene.glsl"
  10 #include "motion_vectors_fs.glsl"
  11
  12 vec3 pal( float t ){
  13    vec3 a = vec3(0.30,0.3,0.3);
  14    vec3 b = vec3(0.8);
  15    vec3 c = vec3(0.28,0.3,0.4);
  16    vec3 d = vec3(0.00,0.1,0.1);
  17    return a + b*cos( 6.28318*(c*t+d) );
  18 }
  19
  20 void main(){
  21    compute_motion_vectors();
  22    vec3 vfrag = vec3(0.5,0.5,0.5);
  23    vec3 qnorm = aNorm.xyz;
  24
  25    //vec4 vsamplemain = texture( uTexMain, aUv );
  26    //vfrag = vsamplemain.rgb;
  27
  28    vec4 spread0 = uTime*0.0002*vec4(  17.3,-19.6, 23.2,-47.7 );
  29    vec4 spread1 = uTime*0.0002*vec4( -13.3, 12.6,-28.2, 14.7 );
  30
  31    vec2 p = aCo.xy + vec2(0.3);
  32    float a = atan( p.y/p.x );
  33    vec4 v0 = step( vec4(0.5), fract(vec4(a) + spread0) );
  34    vec4 v1 = step( vec4(0.5), fract(vec4(a) + spread1) );
  35
  36    float d = ( v0.x+v0.y+v0.z+v0.w +
  37                v1.x+v1.y+v1.z+v1.w ) * 0.125;
  38
  39    float dither = fract(dot(vec2(171.0,231.0),gl_FragCoord.xy)/71.0);
  40    float x = d*0.8+length(p)*0.3;
  41    x = (floor(x*8.0) + step(dither, fract(x * 8.0))) / 8.0;
  42
  43    if( x + (uOpacity*2.0-1.0) < 0.5 )
  44       discard;
  45
  46    vfrag = mix( vec3(x), pal( x ), uColourize );
  47
  48    if( g_light_preview == 1 ){
  49       vfrag = vec3(0.5);
  50    }
  51
  52    vfrag = scene_compute_lighting( vfrag, qnorm, aWorldCo );
  53    oColour = vec4( vfrag, 1.0 );
  54 }