Misaki
35dc7b15a6
Added new stocking surface feature; Fixed the issue that diffuse bsdf is not energy conserving. Fixed the bug that shader can not render alpha clip properly;
298 lines
8.3 KiB
HLSL
298 lines
8.3 KiB
HLSL
#ifndef UTS_COMMON
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#define UTS_COMMON
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl"
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#define inverselerp(a, b, x) saturate(((x) - (a)) / ((b) - (a)))
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#define APPLY_WEIGHT(x, y, t) lerp(x, x * y, t)
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float2 GetWHRatio()
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{
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return float2(_ScreenParams.y / _ScreenParams.x, 1);
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}
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float StepAntiAliasing(float x, float y)
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{
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float v = x - y;
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return saturate(v / fwidth(v) + HALF_MIN); //fwidth(x) = abs(ddx(x) + ddy(x))
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}
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float Remap(float In, float2 InMinMax, float2 OutMinMax)
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{
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return OutMinMax.x + (In - InMinMax.x) * (OutMinMax.y - OutMinMax.x) / (InMinMax.y - InMinMax.x);
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}
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float3 ToonMaping(float3 x)
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{
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x = x * (2.51 * x + 0.03) / (x * (2.43 * x + 0.59) + 0.14);
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return x;
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}
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float3 GetSmoothedWorldNormal(float2 uv, float3x3 t_tbn)
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{
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float3 normal = float3(uv, 0);
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normal.z = sqrt(1.0 - saturate(dot(normal.xy, normal.xy)));
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return mul(normal, t_tbn);
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}
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float3 UtsComputeDiffuseColor(float3 baseColor, float metallic, float min)
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{
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#if _PBR_MODE_OFF
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return baseColor;
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#else
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return baseColor * (max(min, 1.0 - metallic));
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#endif
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}
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float3 UtsComputeDiffuseColor(float3 baseColor, float metallic)
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{
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return UtsComputeDiffuseColor(baseColor, metallic, 0.0);
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}
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float Random(float2 uv)
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{
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return frac(sin(dot(uv, float2(12.9898, 78.233))) * 43758.5453);
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}
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float unity_noise_interpolate (float a, float b, float t)
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{
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return (1.0-t)*a + (t*b);
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}
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float ValueNoise (float2 uv)
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{
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float2 i = floor(uv);
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float2 f = frac(uv);
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f = f * f * (3.0 - 2.0 * f);
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uv = abs(frac(uv) - 0.5);
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float2 c0 = i + float2(0.0, 0.0);
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float2 c1 = i + float2(1.0, 0.0);
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float2 c2 = i + float2(0.0, 1.0);
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float2 c3 = i + float2(1.0, 1.0);
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float r0 = Random(c0);
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float r1 = Random(c1);
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float r2 = Random(c2);
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float r3 = Random(c3);
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float bottomOfGrid = unity_noise_interpolate(r0, r1, f.x);
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float topOfGrid = unity_noise_interpolate(r2, r3, f.x);
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float t = unity_noise_interpolate(bottomOfGrid, topOfGrid, f.y);
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return t;
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}
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float SimpleNoise(float2 UV, float Scale)
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{
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float t = 0.0;
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float freq = pow(2.0, float(0));
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float amp = pow(0.5, float(3-0));
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t += ValueNoise(float2(UV.x*Scale/freq, UV.y*Scale/freq))*amp;
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freq = pow(2.0, float(1));
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amp = pow(0.5, float(3-1));
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t += ValueNoise(float2(UV.x*Scale/freq, UV.y*Scale/freq))*amp;
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freq = pow(2.0, float(2));
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amp = pow(0.5, float(3-2));
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t += ValueNoise(float2(UV.x*Scale/freq, UV.y*Scale/freq))*amp;
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return t;
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}
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#define SampleRampSignalLine(texture, u) (SAMPLE_TEXTURE2D_LOD(texture, s_linear_clamp_sampler, float2(u, 0.5), 0))
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// Exposure
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float3 ApplyCurrentExposureMultiplier(float3 color)
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{
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return color * lerp(GetCurrentExposureMultiplier(), 1, _ToonIgnoreExposureMultiplier);
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}
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float3 ConvertFromEV100(float3 EV100)
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{
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float3 value = pow(2, EV100) * 2.5f;
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return value;
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}
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float3 ConvertToEV100(float3 value)
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{
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return log2(value * 0.4f);
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}
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float WeightSample(PositionInputs positionInput)
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{
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// Center-weighted
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const float2 kCenter = _ScreenParams.xy * 0.5;
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const float weight = pow(length((kCenter.xy - positionInput.positionSS.xy) / _ScreenParams.xy), 1.0);
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return 1.0 - saturate(weight);
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}
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float3 ApplyCompensation(float3 originalColor)
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{
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float3 ev100_Color = ConvertToEV100(originalColor) + _ToonEvAdjustmentCompensation * 0.5f;
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float3 resultColor = max(0, ConvertFromEV100(ev100_Color));
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return resultColor;
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}
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float3 GetExposureAdjustedColor(float3 originalColor)
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{
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if (_ToonEvAdjustmentCurve != 0)
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{
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float3 ev100_Color = ConvertToEV100(originalColor);
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ev100_Color = clamp(ev100_Color, _ToonEvAdjustmentValueMin, _ToonEvAdjustmentValueMax);
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float3 ev100_remap = (ev100_Color - _ToonEvAdjustmentValueMin) * (128 - 1) / (_ToonEvAdjustmentValueMax - _ToonEvAdjustmentValueMin);
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ev100_remap = clamp(ev100_remap, 0.0, 127.0);
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int3 ev100_idx = (int3)ev100_remap;
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float3 ev100_lerp = ev100_remap - ev100_idx;
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float3 ev100_remapped;
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ev100_remapped.r = _ToonEvAdjustmentValueArray[ev100_idx.r] + (_ToonEvAdjustmentValueArray[ev100_idx.r + 1] - _ToonEvAdjustmentValueArray[ev100_idx.r]) * ev100_lerp.r;
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ev100_remapped.g = _ToonEvAdjustmentValueArray[ev100_idx.g] + (_ToonEvAdjustmentValueArray[ev100_idx.g + 1] - _ToonEvAdjustmentValueArray[ev100_idx.g]) * ev100_lerp.g;
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ev100_remapped.b = _ToonEvAdjustmentValueArray[ev100_idx.b] + (_ToonEvAdjustmentValueArray[ev100_idx.b + 1] - _ToonEvAdjustmentValueArray[ev100_idx.b]) * ev100_lerp.b;
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float3 resultColor = ConvertFromEV100(ev100_remapped);
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return resultColor;
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}
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else // else is neccessary to avoid warrnings.
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{
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return originalColor;
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}
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}
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void ApplyExposureAdjustment(inout float3 color)
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{
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color = GetExposureAdjustedColor(color);
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color = ApplyCompensation(color);
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}
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// ----------------------------------------------------------------------------
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// Transform
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// ----------------------------------------------------------------------------
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float3 ProjectOnPlane(float3 vec, float3 normal)
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{
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return vec - normal * dot(vec, normal);
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}
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float2 RotateUV(float2 _uv, float _radian, float2 _piv, float _time)
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{
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float RotateUV_ang = _radian;
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float RotateUV_cos = cos(_time * RotateUV_ang);
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float RotateUV_sin = sin(_time * RotateUV_ang);
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return(mul(_uv - _piv, float2x2(RotateUV_cos, -RotateUV_sin, RotateUV_sin, RotateUV_cos)) + _piv);
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}
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// Anti-perspective form Colin: Counteract perspective effects by replacing regular depth with uniform depth
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uniform float _AntiPerspectiveIntensity;
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void AntiPerspective(inout float4 clipPos)
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{
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float centerVSz = mul(UNITY_MATRIX_V, float4(UNITY_MATRIX_M._m03_m13_m23, 1.0)).z;
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clipPos.xy *= lerp(1.0, abs(clipPos.w) / - centerVSz, _AntiPerspectiveIntensity);
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}
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// ASE
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float2 UnStereo(float2 UV)
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{
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#if UNITY_SINGLE_PASS_STEREO
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float4 scaleOffset = unity_StereoScaleOffset[ unity_StereoEyeIndex ];
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UV.xy = (UV.xy - scaleOffset.zw) / scaleOffset.xy;
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#endif
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return UV;
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}
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// ----------------------------------------------------------------------------
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// Color
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// ----------------------------------------------------------------------------
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float3 ShiftColorPurity(float3 color, float purity)
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{
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return lerp(Luminance(color), color, purity);
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}
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void AlphaGammaCorrection(inout float a1, inout float a2, inout float a3, inout float a4)
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{
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float4 a = float4(a1, a2, a3, a4);
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a = pow(abs(a), 1 / 1.48);
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a1 = a.x;
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a2 = a.y;
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a3 = a.z;
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a4 = a.w;
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}
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void AlphaGammaCorrection(inout float alpha)
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{
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alpha = pow(abs(alpha), 1 / 1.48);
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}
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void AlphaGammaCorrection(inout float alpha, inout float alpha2)
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{
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AlphaGammaCorrection(alpha, alpha2, alpha, alpha);
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}
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void AlphaGammaCorrection(inout float alpha, inout float alpha2, inout float alpha3)
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{
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AlphaGammaCorrection(alpha, alpha2, alpha3, alpha3);
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}
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// ----------------------------------------------------------------------------
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// Depth
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// ----------------------------------------------------------------------------
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float LinearEyeDepth(float z)
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{
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return LinearEyeDepth(z, _ZBufferParams);
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}
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// https://forum.unity.com/threads/what-does-unity-exactly-do-when-we-modify-z-buffer-value-using-sv_depth.526406/
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float LinearEyeDepthToOutDepth(float z)
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{
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return(1 - _ZBufferParams.w * z) / (_ZBufferParams.z * z);
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}
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// Returns the forward (Right) direction of the current view in the world space.
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float3 GetViewRightDir()
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{
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float4x4 viewMat = GetWorldToViewMatrix();
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return viewMat[0].xyz;
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}
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// ASE
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float3 InvertDepthDirHD(float3 In)
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{
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float3 result = In;
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#if !defined(ASE_SRP_VERSION) || ASE_SRP_VERSION <= 70301 || ASE_SRP_VERSION == 70503 || ASE_SRP_VERSION >= 80301
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result *= float3(1, 1, -1);
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#endif
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return result;
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}
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float4x4 unity_CameraProjection;
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float4x4 unity_CameraInvProjection;
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float4x4 unity_WorldToCamera;
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float4x4 unity_CameraToWorld;
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// ASE
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float3 GetWorldPosFromDepthBuffer(float2 clipPos01, float cameraDepth)
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{
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#ifdef UNITY_REVERSED_Z
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float depth = (1.0 - cameraDepth);
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#else
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float depth = cameraDepth;
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#endif
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float3 screenPos_DepthBuffer = (float3(clipPos01, depth));
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float4 clipPos = (float4((screenPos_DepthBuffer * 2.0 - 1.0), 1.0));
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float4 viewPos = mul(unity_CameraInvProjection, clipPos);
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float3 viewPosNorm = viewPos.xyz / viewPos.w;
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float3 localInvertDepthDirHD = InvertDepthDirHD(viewPosNorm);
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return mul(unity_CameraToWorld, float4(localInvertDepthDirHD, 1.0)).xyz;
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}
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#endif
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