shaders/model_character_view.fs

   1 uniform sampler2D uTexMain;
   2 uniform sampler2D uTexSceneDepth;
   3 uniform vec3 uCamera;
   4 uniform vec3 uInverseRatioDepth;
   5 uniform vec3 uInverseRatioMain;
   6
   7 in vec4 aColour;
   8 in vec2 aUv;
   9 in vec3 aNorm;
  10 in vec3 aCo;
  11 in vec3 aWorldCo;
  12
  13 #include "common_world.glsl"
  14 #include "motion_vectors_fs.glsl"
  15
  16 float linear_depth( float depth, float near, float far )
  17 {
  18    float z = depth * 2.0 - 1.0;
  19    return (2.0 * near * far) / (far + near - z * (far - near));
  20 }
  21
  22 void main()
  23 {
  24    compute_motion_vectors();
  25
  26    vec3 qnorm     = normalize(floor(aNorm*2.0)*0.5) + vec3(0.001,0.0,0.0);
  27    vec3 diffuse   = texture( uTexMain, aUv ).rgb;
  28    vec3 composite = world_compute_lighting( diffuse, qnorm, aWorldCo, 1.0 );
  29
  30    float dist    = distance( aWorldCo, uCamera ) - 0.08;
  31    float opacity = clamp( dist*dist, 0.0, 1.0 );
  32
  33    vec2 back_coord = gl_FragCoord.xy*uInverseRatioMain.xy*uInverseRatioDepth.xy;
  34    float back_depth = texture( uTexSceneDepth, back_coord ).r;
  35    float front_depth = gl_FragCoord.z/gl_FragCoord.w;
  36
  37    back_depth = linear_depth( back_depth, 0.1, 2100.0 );
  38    float diff = back_depth - front_depth;
  39
  40    vec2 ssuv = gl_FragCoord.xy;
  41    vec3 vDither = vec3( dot( vec2( 171.0, 231.0 ), ssuv) );
  42    float dither = fract( vDither.g / 71.0 ) - 0.5;
  43
  44    if( step(0.0,diff)+dither<0.3 )
  45       discard;
  46
  47    oColour = vec4( composite, opacity );
  48 }