352 lines
10 KiB
HLSL
352 lines
10 KiB
HLSL
//Unity Toon Shader/HDRP
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//nobuyuki@unity3d.com
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//toshiyuki@unity3d.com (Universal RP/HDRP)
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#ifndef UCTS_HDRP_INCLUDED
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#define UCTS_HDRP_INCLUDED
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#define UCTS_HDRP 1
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#define UTS_LAYER_VISIBILITY
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#ifndef DIRECTIONAL
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# define DIRECTIONAL
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#endif
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#define FP_BUFFER 1
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#if FP_BUFFER
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#define SATURATE_IF_SDR(x) (x)
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#define SATURATE_BASE_COLOR_IF_SDR(x) (x)
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#else
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#define SATURATE_IF_SDR(x) saturate(x)
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#define SATURATE_BASE_COLOR_IF_SDR(x) saturate(x)
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#endif
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struct UTSData
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{
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float3 viewDirection;
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float3 normalDirection;
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fixed cameraDir;
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float cameraRoll;
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fixed signMirror;
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};
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//#define UTSDATA_ZERO_INITIALIZE (UTSData)
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struct UTSLightData
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{
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float3 lightDirection;
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float3 lightColor;
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float diffuseDimmer;
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float specularDimmer;
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float3 shadowTint;
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float penumbraTint;
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float shadowValue;
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};
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struct UTSAggregateLighting
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{
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float3 directDiffuse;
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float3 directSpecular;
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float3 indirectDiffuse;
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float3 indirectSpecular;
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};
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float3 AccumulateAggregateLighting(UTSAggregateLighting aggregateLighting)
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{
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return SATURATE_IF_SDR(aggregateLighting.directDiffuse + aggregateLighting.directSpecular) + aggregateLighting.indirectDiffuse + aggregateLighting.indirectSpecular;
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}
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#if defined(UNITY_PASS_PREPASSBASE) || defined(UNITY_PASS_DEFERRED) || defined(UNITY_PASS_SHADOWCASTER)
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#undef FOG_LINEAR
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#undef FOG_EXP
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#undef FOG_EXP2
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#endif
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#if 1
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// Legacy for compatibility with existing shaders
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inline bool IsGammaSpace()
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{
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#ifdef UNITY_COLORSPACE_GAMMA
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return true;
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#else
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return false;
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#endif
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}
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// normal should be normalized, w=1.0
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half3 SHEvalLinearL0L1(half4 normal)
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{
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half3 x;
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// Linear (L1) + constant (L0) polynomial terms
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x.r = dot(unity_SHAr, normal);
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x.g = dot(unity_SHAg, normal);
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x.b = dot(unity_SHAb, normal);
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return x;
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}
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// normal should be normalized, w=1.0
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half3 SHEvalLinearL2(half4 normal)
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{
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half3 x1, x2;
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// 4 of the quadratic (L2) polynomials
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half4 vB = normal.xyzz * normal.yzzx;
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x1.r = dot(unity_SHBr, vB);
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x1.g = dot(unity_SHBg, vB);
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x1.b = dot(unity_SHBb, vB);
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// Final (5th) quadratic (L2) polynomial
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half vC = normal.x * normal.x - normal.y * normal.y;
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x2 = unity_SHC.rgb * vC;
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return x1 + x2;
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}
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// normal should be normalized, w=1.0
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// output in active color space
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half3 ShadeSH9(half4 normal)
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{
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// Linear + constant polynomial terms
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half3 res = SHEvalLinearL0L1(normal);
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// Quadratic polynomials
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res += SHEvalLinearL2(normal);
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# ifdef UNITY_COLORSPACE_GAMMA
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res = LinearToGammaSpace(res);
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# endif
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return res;
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}
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float3 DecodeLightProbe(float3 N) {
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return ShadeSH9(float4(N, 1));
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}
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inline float GammaToLinearSpaceExact(float value)
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{
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if (value <= 0.04045F)
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return value / 12.92F;
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else if (value < 1.0F)
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return pow((value + 0.055F) / 1.055F, 2.4F);
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else
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return pow(value, 2.2F);
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}
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inline float3 GammaToLinearSpace(float3 sRGB)
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{
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// Approximate version from http://chilliant.blogspot.com.au/2012/08/srgb-approximations-for-hlsl.html?m=1
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return sRGB * (sRGB * (sRGB * 0.305306011h + 0.682171111h) + 0.012522878h);
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// Precise version, useful for debugging.
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//return half3(GammaToLinearSpaceExact(sRGB.r), GammaToLinearSpaceExact(sRGB.g), GammaToLinearSpaceExact(sRGB.b));
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}
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inline float LinearToGammaSpaceExact(float value)
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{
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if (value <= 0.0F)
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return 0.0F;
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else if (value <= 0.0031308F)
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return 12.92F * value;
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else if (value < 1.0F)
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return 1.055F * pow(value, 0.4166667F) - 0.055F;
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else
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return pow(value, 0.45454545F);
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}
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inline float3 LinearToGammaSpace(float3 linRGB)
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{
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linRGB = max(linRGB, float3(0.h, 0.h, 0.h));
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// An almost-perfect approximation from http://chilliant.blogspot.com.au/2012/08/srgb-approximations-for-hlsl.html?m=1
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return max(1.055h * pow(linRGB, 0.416666667h) - 0.055h, 0.h);
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// Exact version, useful for debugging.
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//return half3(LinearToGammaSpaceExact(linRGB.r), LinearToGammaSpaceExact(linRGB.g), LinearToGammaSpaceExact(linRGB.b));
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}
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#if defined(FOG_LINEAR) || defined(FOG_EXP) || defined(FOG_EXP2)
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#define UNITY_FOG_COORDS(idx) UNITY_FOG_COORDS_PACKED(idx, float1)
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#if (SHADER_TARGET < 30) || defined(SHADER_API_MOBILE)
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// mobile or SM2.0: calculate fog factor per-vertex
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#define UNITY_TRANSFER_FOG(o,outpos) UNITY_CALC_FOG_FACTOR((outpos).z); o.fogCoord.x = unityFogFactor
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#else
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// SM3.0 and PC/console: calculate fog distance per-vertex, and fog factor per-pixel
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#define UNITY_TRANSFER_FOG(o,outpos) o.fogCoord.x = (outpos).z
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#endif
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#else
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#define UNITY_FOG_COORDS(idx)
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#define UNITY_TRANSFER_FOG(o,outpos)
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#endif
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#define UNITY_FOG_LERP_COLOR(col,fogCol,fogFac) col.rgb = lerp((fogCol).rgb, (col).rgb, saturate(fogFac))
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#if defined(FOG_LINEAR) || defined(FOG_EXP) || defined(FOG_EXP2)
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#if (SHADER_TARGET < 30) || defined(SHADER_API_MOBILE)
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// mobile or SM2.0: fog factor was already calculated per-vertex, so just lerp the color
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#define UNITY_APPLY_FOG_COLOR(coord,col,fogCol) UNITY_FOG_LERP_COLOR(col,fogCol,(coord).x)
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#else
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// SM3.0 and PC/console: calculate fog factor and lerp fog color
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#define UNITY_APPLY_FOG_COLOR(coord,col,fogCol) UNITY_CALC_FOG_FACTOR((coord).x); UNITY_FOG_LERP_COLOR(col,fogCol,unityFogFactor)
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#endif
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#else
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#define UNITY_APPLY_FOG_COLOR(coord,col,fogCol)
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#endif
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#ifdef UNITY_PASS_FORWARDADD
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#define UNITY_APPLY_FOG(coord,col) UNITY_APPLY_FOG_COLOR(coord,col,fixed4(0,0,0,0))
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#else
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#define UNITY_APPLY_FOG(coord,col) UNITY_APPLY_FOG_COLOR(coord,col,unity_FogColor)
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#endif
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#endif //#if false
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#ifdef DIRECTIONAL
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#define LIGHTING_COORDS(idx1,idx2) SHADOW_COORDS(idx1)
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#define TRANSFER_VERTEX_TO_FRAGMENT(a) TRANSFER_SHADOW(a)
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#define LIGHT_ATTENUATION(a) SHADOW_ATTENUATION(a)
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#endif
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// Transforms 2D UV by scale/bias property
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//#define TRANSFORM_TEX(tex,name) (tex.xy * name##_ST.xy + name##_ST.zw)
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#define UCTS_TEXTURE2D(tex,name) SAMPLE_TEXTURE2D(tex,sampler##tex,TRANSFORM_TEX(name, tex));
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inline float4 UnityObjectToClipPosInstanced(in float3 pos)
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{
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// return mul(UNITY_MATRIX_VP, mul(unity_ObjectToWorldArray[unity_InstanceID], float4(pos, 1.0)));
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// todo. right?
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return mul(UNITY_MATRIX_VP, mul(UNITY_MATRIX_M, float4(pos, 1.0)));
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}
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inline float4 UnityObjectToClipPosInstanced(float4 pos)
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{
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return UnityObjectToClipPosInstanced(pos.xyz);
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}
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#define UnityObjectToClipPos UnityObjectToClipPosInstanced
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inline float3 UnityObjectToWorldNormal( in float3 norm )
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{
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#ifdef UNITY_ASSUME_UNIFORM_SCALING
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return UnityObjectToWorldDir(norm);
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#else
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// mul(IT_M, norm) => mul(norm, I_M) => {dot(norm, I_M.col0), dot(norm, I_M.col1), dot(norm, I_M.col2)}
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return normalize(mul(norm, (float3x3)UNITY_MATRIX_M));
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#endif
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}
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// normal should be normalized, w=1.0
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float3 SHEvalLinearL0L1 (float4 normal)
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{
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float3 x;
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// Linear (L1) + constant (L0) polynomial terms
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x.r = dot(unity_SHAr,normal);
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x.g = dot(unity_SHAg,normal);
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x.b = dot(unity_SHAb,normal);
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return x;
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}
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// normal should be normalized, w=1.0
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float3 SHEvalLinearL2 (float4 normal)
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{
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float3 x1, x2;
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// 4 of the quadratic (L2) polynomials
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float4 vB = normal.xyzz * normal.yzzx;
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x1.r = dot(unity_SHBr,vB);
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x1.g = dot(unity_SHBg,vB);
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x1.b = dot(unity_SHBb,vB);
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// Final (5th) quadratic (L2) polynomial
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half vC = normal.x*normal.x - normal.y*normal.y;
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x2 = unity_SHC.rgb * vC;
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return x1 + x2;
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}
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// normal should be normalized, w=1.0
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// output in active color space
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float3 ShadeSH9 (float4 normal)
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{
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// Linear + constant polynomial terms
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float3 res = SHEvalLinearL0L1 (normal);
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// Quadratic polynomials
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res += SHEvalLinearL2 (normal);
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# ifdef UNITY_COLORSPACE_GAMMA
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res = LinearToGammaSpace (res);
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# endif
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return res;
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}
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float rateR = 0.299;
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float rateG = 0.587;
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float rateB = 0.114;
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float3 SampleBakedGI_UTS(float3 positionRWS, float3 normalWS, float2 uvStaticLightmap, float2 uvDynamicLightmap, bool needToIncludeAPV = false)
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{
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float3 bakeDiffuseLighting = float3(0, 0, 0);
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float3 backBakeDiffuseLighting = float3(0, 0, 0);
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float3 backNormalWS = float3(0, 0, 0);
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#if !defined(_SURFACE_TYPE_TRANSPARENT) && (SHADERPASS != SHADERPASS_RAYTRACING_INDIRECT) && (SHADERPASS != SHADERPASS_RAYTRACING_GBUFFER)
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if (_IndirectDiffuseMode != INDIRECTDIFFUSEMODE_OFF
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#if (SHADERPASS == SHADERPASS_GBUFER)
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&& _IndirectDiffuseMode != INDIRECTDIFFUSEMODE_MIXED && _ReflectionsMode != REFLECTIONSMODE_MIXED
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#endif
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)
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return bakeDiffuseLighting;
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#endif
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#if defined(LIGHTMAP_ON) || defined(DYNAMICLIGHTMAP_ON)
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EvaluateLightmap(positionRWS, normalWS, backNormalWS, uvStaticLightmap, uvDynamicLightmap, bakeDiffuseLighting, backBakeDiffuseLighting);
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#elif (defined(PROBE_VOLUMES_L1) || defined(PROBE_VOLUMES_L2))
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if (needToIncludeAPV)
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{
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EvaluateAdaptiveProbeVolume(GetAbsolutePositionWS(positionRWS), normalWS, backNormalWS, GetWorldSpaceNormalizeViewDir(positionRWS), 0.0, bakeDiffuseLighting, backBakeDiffuseLighting);
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}
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#else
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EvaluateLightProbeBuiltin(positionRWS, normalWS, backNormalWS, bakeDiffuseLighting, backBakeDiffuseLighting);
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#if defined(SHADER_STAGE_RAY_TRACING)
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bakeDiffuseLighting *= _RayTracingAmbientProbeDimmer;
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backBakeDiffuseLighting *= _RayTracingAmbientProbeDimmer;
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#endif
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#endif
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return bakeDiffuseLighting;
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}
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float3 SampleBakedGI_UTS_OutLine(float3 positionRWS, float3 normalWS, float2 uvStaticLightmap, float2 uvDynamicLightmap)
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{
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float3 bakeDiffuseLighting = float3(0, 0, 0);
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float3 backBakeDiffuseLighting = float3(0, 0, 0);
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float3 backNormalWS = float3(0, 0, 0);
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#if defined(LIGHTMAP_ON) || defined(DYNAMICLIGHTMAP_ON)
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EvaluateLightmap(positionRWS, normalWS, backNormalWS, uvStaticLightmap, uvDynamicLightmap, bakeDiffuseLighting, backBakeDiffuseLighting);
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#elif (defined(PROBE_VOLUMES_L1) || defined(PROBE_VOLUMES_L2))
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EvaluateAdaptiveProbeVolume(GetAbsolutePositionWS(positionRWS), normalWS, backNormalWS, GetWorldSpaceNormalizeViewDir(positionRWS), 0.0, bakeDiffuseLighting, backBakeDiffuseLighting);
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#else
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EvaluateLightProbeBuiltin(positionRWS, normalWS, backNormalWS, bakeDiffuseLighting, backBakeDiffuseLighting);
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#if defined(SHADER_STAGE_RAY_TRACING)
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bakeDiffuseLighting *= _RayTracingAmbientProbeDimmer;
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backBakeDiffuseLighting *= _RayTracingAmbientProbeDimmer;
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#endif
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#endif
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return bakeDiffuseLighting;
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}
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#endif //#ifndef UCTS_HDRP_INCLUDED |