diff options
| -rw-r--r-- | fog.cginc | 54 |
1 files changed, 7 insertions, 47 deletions
@@ -70,18 +70,6 @@ float map(float3 p, float lod) { return saturate(density); } -float3 get_normal(float3 p, float map_p, float lod) { - float3 e = float3(0.001, 0, 0); - float center = map_p; - - // Prevent NaN - float e2 = 1E-9; - return normalize(float3( - map(p + e.xyz, lod) - center, - map(p + e.yxz, lod) - center, - map(p + e.zyx, lod) - center) + e2); -} - void getEmitterData(float3 p, float step_size, float3 em_loc, float3 em_normal, float2 emitter_scale, out float3 em_color, out float em_weight) @@ -178,6 +166,13 @@ Fog00PBR getFog00(v2f i) { #define FOG_MAX_LOOP 128 step_count = min(step_count, FOG_MAX_LOOP); +#if defined(_GIMMICK_FOG_00_EMITTER_TEXTURE) + const float3 em_loc = _Gimmick_Fog_00_Emitter0_Location; + const float3 em_normal = normalize(_Gimmick_Fog_00_Emitter0_Normal); + const float em_scale_x = _Gimmick_Fog_00_Emitter0_Scale_X; + const float em_scale_y = _Gimmick_Fog_00_Emitter0_Scale_Y; +#endif + float3 normal = i.normal; float ao = 0; for (uint ii = 0; ii < step_count; ii++) { @@ -190,50 +185,15 @@ Fog00PBR getFog00(v2f i) { #if defined(_GIMMICK_FOG_00_EMITTER_TEXTURE) { - const float3 em_loc = _Gimmick_Fog_00_Emitter0_Location; - const float3 em_normal = normalize(_Gimmick_Fog_00_Emitter0_Normal); - const float em_scale_x = _Gimmick_Fog_00_Emitter0_Scale_X; - const float em_scale_y = _Gimmick_Fog_00_Emitter0_Scale_Y; - float3 em_color; float em_weight; getEmitterData(p, step_size, em_loc, em_normal, float2(em_scale_x, em_scale_y), em_color, em_weight); -#if defined(_GIMMICK_FOG_00_EMITTER_1) - const float3 em1_loc = _Gimmick_Fog_00_Emitter1_Location; - const float3 em1_normal = normalize(_Gimmick_Fog_00_Emitter1_Normal); - const float em1_scale_x = _Gimmick_Fog_00_Emitter1_Scale_X; - const float em1_scale_y = _Gimmick_Fog_00_Emitter1_Scale_Y; - float3 em1_color; - float em1_weight; - getEmitterData(p, step_size, em1_loc, em1_normal, float2(em1_scale_x, em1_scale_y), em1_color, em1_weight); - em_color += em1_color; - em_weight += em1_weight; -#endif -#if defined(_GIMMICK_FOG_00_EMITTER_2) - const float3 em2_loc = _Gimmick_Fog_00_Emitter2_Location; - const float3 em2_normal = normalize(_Gimmick_Fog_00_Emitter2_Normal); - const float em2_scale_x = _Gimmick_Fog_00_Emitter2_Scale_X; - const float em2_scale_y = _Gimmick_Fog_00_Emitter2_Scale_Y; - float3 em2_color; - float em2_weight; - getEmitterData(p, step_size, em2_loc, em2_normal, float2(em2_scale_x, em2_scale_y), em2_color, em2_weight); - em_color += em2_color; - em_weight += em2_weight; -#endif c.rgb = lerp(c.rgb, em_color, em_weight); } #endif acc += c * (1.0 - acc.a); - // Performance hack: stop blending normals after enough accumulation. -#if 0 - if (acc.a < _Gimmick_Fog_00_Normal_Cutoff) { - float3 n = get_normal(p, map_p); - float n_interp = saturate(c.a * (1.0 - acc.a) * rcp(_Gimmick_Fog_00_Normal_Cutoff)); - normal = MY_BLEND_NORMALS(normal, n, n_interp); - } -#endif if (acc.a > _Gimmick_Fog_00_Alpha_Cutoff) { acc /= acc.a; break; |