diff options
Diffstat (limited to 'fog.cginc')
| -rw-r--r-- | fog.cginc | 11 |
1 files changed, 10 insertions, 1 deletions
@@ -156,7 +156,16 @@ Fog00PBR getFog00(v2f i) { // is visible with no factor. float step_size = rcp(_Gimmick_Fog_00_Density) * _Gimmick_Fog_00_Step_Size_Factor; step_size = clamp(step_size, 1E-2, 10); - float dither = rand2(screen_uv*10) * step_size * _Gimmick_Fog_00_Ray_Origin_Randomization; + int2 screen_uv_round = floor(screen_uv * _ScreenParams.xy); + float dither_seed = rand2(float2(screen_uv_round.x, screen_uv_round.y)*.001); + // Smoothly vary over time. Use a triangle wave since it distributes points + // evenly. A sin wave would bunch points up at boundaries. + #if 1 + dither_seed = frac(dither_seed + _Time[0]*2); + dither_seed *= 2; // Map onto [0, 2] + dither_seed = abs(dither_seed - 1); // Shape into triangle wave ranging from 0 to 1 + #endif + float dither = dither_seed * step_size * _Gimmick_Fog_00_Ray_Origin_Randomization; ro += rd * (0.1 + dither); float world_pos_depth_hit_l = length(world_pos_depth_hit - ro); |