Project_WL/Assets/_MK/MKToon/Shader/Lib/Common.hlsl

455 lines
16 KiB
HLSL

//////////////////////////////////////////////////////
// MK Toon Common //
// //
// Created by Michael Kremmel //
// www.michaelkremmel.de //
// Copyright © 2020 All rights reserved. //
//////////////////////////////////////////////////////
#ifndef MK_TOON_COMMON
#define MK_TOON_COMMON
#if defined(MK_URP)
#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
#elif defined(MK_LWRP)
#include "Packages/com.unity.render-pipelines.lightweight/ShaderLibrary/Core.hlsl"
#else
#include "UnityCG.cginc"
#endif
#include "Config.hlsl"
#include "Pipeline.hlsl"
/////////////////////////////////////////////////////////////////////////////////////////////
// COMMON
/////////////////////////////////////////////////////////////////////////////////////////////
#define MK_NOISE_MULT 2.0h
inline float Stutter(float t, float f)
{
return frac(SafeDivide(round(t * f), f));
}
inline float2 Stutter(float t, float2 f)
{
return frac(SafeDivide(round(t * f), f));
}
inline float3 Stutter(float t, float3 f)
{
return frac(SafeDivide(round(t * f), f));
}
inline half ScaleToFitResolution(half2 referenceAspect, half2 referenceResolution, half2 resolution)
{
half aspect = SafeDivide(resolution.x, resolution.y);
half scaledAspect = SafeDivide(max(referenceAspect.x, referenceAspect.y), aspect);
half scaledResolution = lerp((resolution.y / referenceResolution.y), (resolution.x / referenceResolution.x), saturate(resolution.y / resolution.x));
scaledAspect = lerp(1.0 / scaledAspect, scaledAspect, saturate(aspect));
return scaledAspect * scaledResolution;
}
inline half ScaleToFitOrthograpicSize(float clipScale)
{
half orthographicScale = 1;
UNITY_FLATTEN
if(unity_OrthoParams.w > 0)
orthographicScale = clipScale / unity_OrthoParams.y;
return orthographicScale;
}
inline half ScaleToFitOrthographicUV(float clipScale)
{
//#if defined(MK_MULTI_PASS_STEREO_SCALING) || defined(UNITY_SINGLE_PASS_STEREO) || defined(UNITY_STEREO_INSTANCING_ENABLED) || defined(UNITY_STEREO_MULTIVIEW_ENABLED)
#if (defined(USING_STEREO_MATRICES) || defined(MK_MULTI_PASS_STEREO_SCALING))
const half scaleFactor = 2.0;
#else
const half scaleFactor = 1.0;
#endif
half orhtographicUVScale = 1;
UNITY_FLATTEN
if(unity_OrthoParams.w > 0)
orhtographicUVScale = 2.0 * clipScale * unity_OrthoParams.y;
#ifdef UNITY_SINGLE_PASS_STEREO
return half2(0.5h, 1) * (orhtographicUVScale * scaleFactor);
#else
return orhtographicUVScale * scaleFactor;
#endif
}
inline float ComputeLinearDepthToEyeDepth(float eyeDepth)
{
#if UNITY_REVERSED_Z
return _ProjectionParams.z - (_ProjectionParams.z - _ProjectionParams.y) * eyeDepth;
#else
return _ProjectionParams.y + (_ProjectionParams.z - _ProjectionParams.y) * eyeDepth;
#endif
}
inline half SoftFade(float near, float far, float4 ndc, float4 uvScreen)
{
//near OR far has to be > 0.0
float rawDepth = SampleDepth(uvScreen.xy);
float sceneDepth = (unity_OrthoParams.w == 0) ? ComputeLinearDepth(rawDepth) : ComputeLinearDepthToEyeDepth(rawDepth);
float depth = ComputeLinearDepth(ndc.z);
return saturate(far * ((sceneDepth - near) - depth));
}
inline half SoftFade(float near, float far, float4 ndc)
{
//near OR far has to be > 0.0
float sceneDepth = ComputeLinearDepth(SampleDepth(ndc.xy));
float depth = ComputeLinearDepth(SafeDivide(ndc.z, ndc.w));
return saturate(far * ((sceneDepth - near) - depth));
}
inline half CameraFade(float near, float far, float4 ndc)
{
float depth = ComputeLinearDepth(SafeDivide(ndc.z, ndc.w));
//Remap to 0 - 1
far = Rcp(far - near);
return saturate((depth - near) * far);
}
inline void MixAlbedoDetail(inout half3 albedo, in half4 detail)
{
#if defined(MK_DETAIL_BLEND_MIX)
albedo = lerp(albedo, detail.rgb, _DetailMix * detail.a);
#elif defined(MK_DETAIL_BLEND_ADD)
albedo += lerp(0.0h, detail.rgb, _DetailMix * detail.a);
#else //MK_DETAIL_BLEND_MULTIPLY
albedo *= lerp(1.0h, detail.rgb, _DetailMix * detail.a);
#endif
}
inline half2 Parallax(half3 viewTangent, half height, half parallax, half bias)
{
return SafeDivide(viewTangent.xy, viewTangent.z + bias) * (height * parallax - parallax * 0.5);
}
inline half3 UnpackRawNormal(half4 rawNormal, half bumpiness)
{
half3 unpackedNormal;
#if defined(UNITY_NO_DXT5nm)
unpackedNormal = rawNormal.rgb * 2.0 - 1.0;
#else
rawNormal.r *= rawNormal.a;
unpackedNormal = half3(2.0 * rawNormal.a - 1.0, 2.0 * rawNormal.g - 1.0, 0.0);
#endif
unpackedNormal.xy *= bumpiness;
#if !defined(UNITY_NO_DXT5nm)
//unpackedNormal.z = sqrt(1.0 - dot(unpackedNormal.xy, unpackedNormal.xy));
unpackedNormal.z = 1.0 - 0.5 * dot(unpackedNormal.xy, unpackedNormal.xy); //approximation
#endif
return unpackedNormal;
}
inline half2 UnpackDudv(DECLARE_TEXTURE_2D_ARGS(dudvMap, samplerTex), float2 uv, float3 blendUV)
{
//somehow a range of [-1, 1] is not possible unless the texture is packed as a normal map
//therefore its encoded as a normal map and should also be imported as a normal map
//Normal map or Dudv map can be used
return UnpackRawNormal(SAMPLE_TEX2D_FLIPBOOK(dudvMap, samplerTex, uv, blendUV), 1).rg;
}
inline half3 UnpackNormalMap(DECLARE_TEXTURE_2D_ARGS(normalMap, samplerTex), float2 uv, float3 blendUV, half bumpiness)
{
half4 rawNormal = SAMPLE_TEX2D_FLIPBOOK(normalMap, samplerTex, uv, blendUV);
return UnpackRawNormal(rawNormal, bumpiness);
}
inline half3 UnpackNormalMap(DECLARE_TEXTURE_2D_ARGS(normalMap, samplerTex), float2 uv, half bumpiness)
{
half4 rawNormal = SampleTex2D(PASS_TEXTURE_2D(normalMap, samplerTex), uv);
return UnpackRawNormal(rawNormal, bumpiness);
}
inline half3 NormalMappingWorld(DECLARE_TEXTURE_2D_ARGS(normalMap, samplerTex), float2 uv, float3 blendUV, half bumpiness, half3x3 tbn)
{
return MKSafeNormalize(mul(UnpackNormalMap(PASS_TEXTURE_2D(normalMap, samplerTex), uv, blendUV, bumpiness), tbn));
}
inline half3 NormalMappingWorld(DECLARE_TEXTURE_2D_ARGS(normalMap, samplerTex), float2 uvMain, float3 blendUV, half bumpiness, DECLARE_TEXTURE_2D_ARGS(detailNormalMap, samplerTex2), float2 uvDetail, half bumpinessDetail, half3x3 tbn)
{
half3 normalTangent = UnpackNormalMap(PASS_TEXTURE_2D(normalMap, samplerTex), uvMain, blendUV, bumpiness);
half3 normalDetailTangent = UnpackNormalMap(PASS_TEXTURE_2D(detailNormalMap, samplerTex2), uvDetail, blendUV, bumpinessDetail);
return MKSafeNormalize(mul(MKSafeNormalize(half3(normalTangent.xy + normalDetailTangent.xy, lerp(normalTangent.z, normalDetailTangent.z, 0.5))), tbn));
}
//threshold based lighting type
inline half Cel(half threshold, half smoothnessMin, half smoothnessMax, half value)
{
#ifdef MK_LOCAL_ANTIALIASING
half ddx = fwidth(value);
return smoothstep(threshold - smoothnessMin - ddx, threshold + smoothnessMax + ddx, value);
#else
return smoothstep(threshold - smoothnessMin, threshold + smoothnessMax, value);
#endif
}
inline half SmoothFloor(half v, half smoothness)
{
half roughness = 1.0 - smoothness;
half scale = cos(PI_TWO*max((frac(v) - roughness) / smoothness, 0.5));
half bias = (scale + 1) * 0.5;
return floor(v) + bias;
}
//level based lighting type
inline half Banding(half v, half levels, half smoothnessMin, half smoothnessMax, half threshold, half fade)
{
#ifdef MK_LEGACY_BANDED_LIGHTING
levels--;
threshold = lerp(threshold, threshold * levels, fade);
half vl = v * lerp(1, levels, fade);
half levelStep = Rcp(levels);
half bands = Cel(threshold, smoothnessMin, smoothnessMax, vl);
bands += Cel(levelStep + threshold, smoothnessMin, smoothnessMax, vl);
bands += Cel(levelStep * 2 + threshold, smoothnessMin, smoothnessMax, vl) * step(3, levels);
bands += Cel(levelStep * 3 + threshold, smoothnessMin, smoothnessMax, vl) * step(4, levels);
bands += Cel(levelStep * 4 + threshold, smoothnessMin, smoothnessMax, vl) * step(5, levels);
bands += Cel(levelStep * 5 + threshold, smoothnessMin, smoothnessMax, vl) * step(6, levels);
return bands * levelStep;
#else
levels--;
half smoothness = smoothnessMin + smoothnessMax;
#ifdef MK_LOCAL_ANTIALIASING
//TODO proper hardware AA still missing...
smoothness = max(smoothness, 0.005);
#endif
v = max(0.0, v - threshold * 0.5);
half offset = (2.0 / levels) + fade + 1 - smoothness * Rcp(levels);
half level = offset * v;
half banding = SmoothFloor(level * levels, smoothness);
return saturate(banding / levels);
#endif
}
//Rampcolor when dissolving
inline half3 DissolveRamp(half dissolveValue, DECLARE_TEXTURE_2D_ARGS(dissolveBorderRampTex, samplerTex), half4 dissolveBorderColor, half dissolveBorderSize, half dissolveAmount, half2 uv, half3 baseCol)
{
half sv = dissolveBorderSize * dissolveAmount;
return lerp(baseCol, dissolveBorderColor.rgb * SampleTex2D(PASS_TEXTURE_2D(dissolveBorderRampTex, samplerTex), half2(dissolveValue * Rcp(sv), T_V)).rgb, dissolveBorderColor.a * step(dissolveValue, sv));
}
//Color when dissolving
inline half3 DissolveColor(half dissolveValue, half4 dissolveBorderColor, half dissolveBorderSize, half dissolveAmount, half3 baseCol)
{
return lerp(baseCol, dissolveBorderColor.rgb, dissolveBorderColor.a * step(dissolveValue, dissolveBorderSize * dissolveAmount));
}
//Unity Shader Graph based Hue
inline void UnitySGHue(float3 In, float Offset, out float3 Out)
{
float4 K = float4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
float4 P = lerp(float4(In.bg, K.wz), float4(In.gb, K.xy), step(In.b, In.g));
float4 Q = lerp(float4(P.xyw, In.r), float4(In.r, P.yzx), step(P.x, In.r));
float D = Q.x - min(Q.w, Q.y);
float E = 1e-10;
float3 hsv = float3(abs(Q.z + (Q.w - Q.y)/(6.0 * D + E)), D / (Q.x + E), Q.x);
float hue = hsv.x + Offset;
hsv.x = (hue < 0)
? hue + 1
: (hue > 1)
? hue - 1
: hue;
float4 K2 = float4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
float3 P2 = abs(frac(hsv.xxx + K2.xyz) * 6.0 - K2.www);
Out = hsv.z * lerp(K2.xxx, saturate(P2 - K2.xxx), hsv.y);
}
//Contrast - Saturation - Brightness
inline half3 ColorGrading(half3 color, half brightness, half saturation, half contrast)
{
half3 hueColor;
UnitySGHue(color, _Hue, hueColor);
color = hueColor;
//
half3 bc = color * brightness;
half i = dot(bc, REL_LUMA);
#ifdef MK_FORWARD_ADD_PASS
color = lerp(half3(0.0, 0.0, 0.0), lerp(half3(i, i, i), bc, saturation), contrast);
#else
color = lerp(half3(0.5, 0.5, 0.5), lerp(half3(i, i, i), bc, saturation), contrast);
#endif
return color;
}
inline float NoiseSimple(float3 v, float2 uv)
{
#ifdef MK_LEGACY_NOISE
return frac(sin(dot(v, REL_LUMA * 123456.54321)) * 987654.56789);
#else
return MK_NOISE_MULT * tex2Dlod(_NoiseMap, float4(uv.xy, 0, 0)).r;
#endif
}
inline half Drawn(half value, half artistic, half artisticClampMin, half artisticClampMax)
{
//currently implemented as soft pattern, see repo for hard pattern prototype
#ifdef MK_LOCAL_ANTIALIASING
half ddx = fwidth(value);
return lerp(artisticClampMin, 1, value) * smoothstep(artistic - HALF_MIN - ddx, artistic + ddx, clamp(value, artisticClampMin, artisticClampMax));
//return lerp(artisticClampMin, 1, value) * smoothstep(artistic - T_H - ddx, artistic, clamp(value, artisticClampMin, artisticClampMax));
#else
return lerp(artisticClampMin, 1, value) * smoothstep(artistic - HALF_MIN, artistic, clamp(value, artisticClampMin, artisticClampMax));
#endif
}
inline half Drawn(half value, half artistic, half artisticClampMax)
{
return Drawn(value, artistic, 0, artisticClampMax);
}
inline half Hatching(half3 dark, half3 bright, half value, half threshold)
{
//value of 0 = black, no strokes visible
half stepMax = clamp(value, threshold, 1.0h) * 6.0h;
half3 darkCoeff, brightCoeff;
#ifdef MK_LOCAL_ANTIALIASING
half ddx = fwidth(value);
darkCoeff = saturate(stepMax - half3(0, 1, 2) - ddx); //half3(0, 1, 2)); 7 step
brightCoeff = saturate(stepMax - half3(3, 4, 5) - ddx);
#else
darkCoeff = saturate(stepMax - half3(0, 1, 2)); //half3(0, 1, 2)); 7 step
brightCoeff = saturate(stepMax - half3(3, 4, 5));
#endif
//step wise coeff
darkCoeff.xy -= darkCoeff.yz;
darkCoeff.z -= brightCoeff.x;
brightCoeff.xy -= brightCoeff.yz;
//last step = 0 (7max)
//lerped coeff
//darkCoeff = lerp(darkCoeff, half3(darkCoeff.yz, brightCoeff.x), 0.5);
//brightCoeff = lerp(brightCoeff, half3(brightCoeff.yz, 0), 0.5);
half3 d = dark * darkCoeff;
half3 b = bright * brightCoeff;
return d.b + d.g + d.r + b.b + b.g + b.r + bright.r * max(0, value - 1.0);
}
inline half Sketch(half vMin, half vMax, half value)
{
#ifdef MK_LOCAL_ANTIALIASING
half ddx = fwidth(value);
return max(lerp(vMin - T_V - ddx, vMax, value), 0);
#else
return max(lerp(vMin - T_V, vMax, value), 0);
#endif
}
inline half Sketch(half vMax, half value)
{
return lerp(0, vMax, value);
}
//Half Lambert - Valve
inline half HalfWrap(half value, half wrap)
{
return FastPow2(value * wrap + (1.0 - wrap));
}
inline half HalfWrap(half value)
{
return FastPow2(value * 0.5 + 0.5);
}
//Unity based HSV - RGB
inline half3 RGBToHSV(half3 c)
{
const half4 K = half4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
half4 p = lerp(half4(c.bg, K.wz), half4(c.gb, K.xy), step(c.b, c.g));
half4 q = lerp(half4(p.xyw, c.r), half4(c.r, p.yzx), step(p.x, c.r));
half d = q.x - min(q.w, q.y);
const half e = 1.0e-4;
return half3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
}
inline half3 HSVToRGB(half3 c)
{
const half4 K = half4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
half3 p = abs(frac(c.xxx + K.xyz) * 6.0 - K.www);
return c.z * lerp(K.xxx, saturate(p - K.xxx), c.y);
}
inline float3 VertexAnimationSine(float3 positionObject, half intensity, half3 frequency)
{
#ifdef MK_VERTEX_ANIMATION_STUTTER
positionObject += sin((positionObject.zxx + Stutter(MK_TIME.y, frequency.zyx)) * frequency.zyx) * intensity;
#else
positionObject += sin((positionObject.zxx + MK_TIME.y) * frequency.zyx) * intensity;
#endif
return positionObject;
}
inline float3 VertexAnimationPulse(float3 positionObject, half3 normalObject, half intensity, half3 frequency)
{
#ifdef MK_VERTEX_ANIMATION_STUTTER
//positionObject += SafeNormalizenormalObject * sin(Stutter(MK_TIME.y, frequency.xyz) * frequency.xyz) * intensity;
float3 scaleAnimation = 1.0 + sin(Stutter(MK_TIME.y, frequency.xyz) * frequency.xyz) * intensity;
float3x3 scale = float3x3
(
scaleAnimation.x, 0, 0,
0, scaleAnimation.y, 0,
0, 0, scaleAnimation.z
);
positionObject = mul(scale, positionObject.xyz);
#else
//positionObject += normalObject * sin((MK_TIME.y) * frequency.xyz) * intensity;
float3 scaleAnimation = 1.0 + sin((MK_TIME.y) * frequency.xyz) * intensity;
float3x3 scale = float3x3
(
scaleAnimation.x, 0, 0,
0, scaleAnimation.y, 0,
0, 0, scaleAnimation.z
);
positionObject = mul(scale, positionObject.xyz);
#endif
return positionObject;
}
inline float3 VertexAnimationNoise(float3 positionObject, float2 uv, half3 normalObject, half intensity, half3 frequency)
{
#ifdef MK_VERTEX_ANIMATION_STUTTER
positionObject += normalObject * sin(Stutter(NoiseSimple(positionObject, normalObject.xz) * MK_TIME.y, frequency.xyz) * frequency.xyz) * intensity;
#else
positionObject += normalObject * sin((NoiseSimple(positionObject, normalObject.xz) * MK_TIME.y) * frequency.xyz) * intensity;
#endif
return positionObject;
}
#if !defined(MK_VERTEX_ANIMATION_SINE)
#define PASS_VERTEX_ANIMATION_ARG(vertexAnimationMap, uv, intensity, frequency, positionObject, normalObject) vertexAnimationMap, uv, intensity, frequency, positionObject, normalObject
#else
#define PASS_VERTEX_ANIMATION_ARG(vertexAnimationMap, uv, intensity, frequency, positionObject, normalObject) vertexAnimationMap, uv, intensity, frequency, positionObject
#endif
inline float3 VertexAnimation
(
sampler2D vertexAnimationMap
, float2 uv
, half intensity
, float3 frequency
, float3 positionObject
#ifndef MK_VERTEX_ANIMATION_SINE
, half3 normalObject
#endif
)
{
#ifdef MK_VERTEX_ANIMATION_MAP
intensity *= tex2Dlod(vertexAnimationMap, float4(uv, 0, 0)).r;
#endif
#if defined(MK_VERTEX_ANIMATION_PULSE)
return VertexAnimationPulse(positionObject, normalObject, intensity, frequency);
#elif defined(MK_VERTEX_ANIMATION_NOISE)
return VertexAnimationNoise(positionObject, uv, normalObject, intensity, frequency);
#else
return VertexAnimationSine(positionObject, intensity, frequency);
#endif
}
#endif