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January 12, 2023 14:53
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| //Propertices related of Tone map. | |
| [Header(TONE MAPPER)]//// Neutral tonemapping (Hable/Hejl/Frostbite) | |
| [Toggle] _toggleToneMapper("Tone Mapper" , FLOAT) = 0 | |
| _a("Segment A" , Range(0.1, 1)) = 0.2 | |
| _b("Segment B" , Range(0.1, 1)) = 0.29 | |
| _c("Segment C" , Range(0.1, 1)) = 0.24 | |
| _d("Segment D" , Range(0.1, 1)) = 0.272 | |
| _e("Segment E" , Range(0.01, 0.1)) = 0.02 | |
| _f("Segment F" , Range(0.1, 1)) = 0.3 | |
| _WhiteLevel("ToneMappe White Level" , Range(1.3, 5.3)) = 2.3 | |
| //==================================================================== | |
| //adding to variable for On off toggle | |
| uniform half _toggleToneMapper; | |
| //===================================================================== | |
| // Neutral tonemapping (Hable/Hejl/Frostbite) | |
| // Adding to Neutral tone map function inside shader. | |
| FLOAT3 NeutralCurve(FLOAT3 x, FLOAT a, FLOAT b, FLOAT c, FLOAT d, FLOAT e, FLOAT f) | |
| { | |
| return ((x * (a * x + c * b) + d * e) / (x * (a * x + b) + d * f)) - e / f; | |
| } | |
| FLOAT3 NeutralTonemap(FLOAT3 x) | |
| { | |
| // Tonemap | |
| const FLOAT a = _a; | |
| const FLOAT b = _b; | |
| const FLOAT c = _c; | |
| const FLOAT d = _d; | |
| const FLOAT e = _e; | |
| const FLOAT f = _f; | |
| const FLOAT whiteLevel = _WhiteLevel; | |
| const FLOAT whiteClip = 1; | |
| half3 whiteScale = (1.0).xxx / NeutralCurve(whiteLevel, a, b, c, d, e, f); | |
| x = NeutralCurve(x * whiteScale, a, b, c, d, e, f); | |
| x *= whiteScale; | |
| // Post-curve white point adjustment | |
| x /= whiteClip.xxx; | |
| return x; | |
| } | |
| //======================================================================================= | |
| // Use to if branch with NeutralTonemap function for last output result of finalColor. | |
| if (_toggleToneMapper) | |
| { | |
| finalColor = NeutralTonemap(finalColor); | |
| } |
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