diff options
Diffstat (limited to 'pbr.cginc')
| -rw-r--r-- | pbr.cginc | 53 |
1 files changed, 40 insertions, 13 deletions
@@ -236,26 +236,53 @@ float4 getLitColor( } #endif + direct_light.color = RGBtoHSV(direct_light.color); + indirect_light.specular = RGBtoHSV(indirect_light.specular); + indirect_light.diffuse = RGBtoHSV(indirect_light.diffuse); + if (_Reflection_Probe_Saturation < 1.0) { - direct_light.color = RGBtoHSV(direct_light.color); direct_light.color[1] *= _Reflection_Probe_Saturation; - direct_light.color = HSVtoRGB(direct_light.color); - indirect_light.specular = RGBtoHSV(indirect_light.specular); indirect_light.specular[1] *= _Reflection_Probe_Saturation; - indirect_light.specular = HSVtoRGB(indirect_light.specular); - indirect_light.diffuse = RGBtoHSV(indirect_light.diffuse); indirect_light.diffuse[1] *= _Reflection_Probe_Saturation; - indirect_light.diffuse = HSVtoRGB(indirect_light.diffuse); } - direct_light.color = clamp(direct_light.color, _Min_Brightness, _Max_Brightness); - indirect_light.diffuse = clamp(indirect_light.diffuse, _Min_Brightness, _Max_Brightness); - indirect_light.specular = clamp(indirect_light.specular, _Min_Brightness, _Max_Brightness); +#if defined(_PROXIMITY_DIMMING) + { + float cam_dist = length(_WorldSpaceCameraPos - worldPos); + cam_dist = clamp(cam_dist, _Proximity_Dimming_Min_Dist, + _Proximity_Dimming_Max_Dist); + // Map onto [0, 1] + cam_dist = (cam_dist - _Proximity_Dimming_Min_Dist) / + (_Proximity_Dimming_Max_Dist - _Proximity_Dimming_Min_Dist); + float dim_factor = lerp(_Proximity_Dimming_Factor, 1, cam_dist); + direct_light.color[2] *= dim_factor; + indirect_light.diffuse[2] *= dim_factor; + indirect_light.specular[2] *= dim_factor; + } +#endif - // TODO move back before clamping - direct_light.color *= _Lighting_Factor * _Direct_Lighting_Factor * enable_direct; - indirect_light.specular *= _Lighting_Factor * _Indirect_Specular_Lighting_Factor; - indirect_light.diffuse *= _Lighting_Factor * _Indirect_Diffuse_Lighting_Factor; + direct_light.color[2] *= _Lighting_Factor * _Direct_Lighting_Factor * enable_direct; + indirect_light.specular[2] *= _Lighting_Factor * _Indirect_Specular_Lighting_Factor; + indirect_light.diffuse[2] *= _Lighting_Factor * _Indirect_Diffuse_Lighting_Factor; + + float2 brightnesses = float2( + direct_light.color[2], + indirect_light.diffuse[2]); + // Do this to avoid division by 0. If both light sources are black, + // sum_brightness could be 0; + brightnesses = max(brightnesses, min(_Min_Brightness, .001)); + float sum_brightness = brightnesses[0] + brightnesses[1]; + float2 brightness_proportions = brightnesses / sum_brightness; + sum_brightness = clamp(sum_brightness, _Min_Brightness, _Max_Brightness); + direct_light.color[2] = sum_brightness * brightness_proportions[0]; + indirect_light.diffuse[2] = sum_brightness * brightness_proportions[1]; + + // Specular has to be clamped separately to avoid artifacting. + indirect_light.specular[2] = clamp(indirect_light.specular[2], _Min_Brightness, _Max_Brightness); + + direct_light.color = HSVtoRGB(direct_light.color); + indirect_light.specular = HSVtoRGB(indirect_light.specular); + indirect_light.diffuse = HSVtoRGB(indirect_light.diffuse); // Apply AO indirect_light.diffuse *= ao; |