395 lines
14 KiB
HLSL
Executable file
395 lines
14 KiB
HLSL
Executable file
void calcNormal(inout XSLighting i)
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{
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if(_NormalMapMode == 0)
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{
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half3 nMap = UnpackScaleNormal(i.normalMap, _BumpScale);
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half3 detNMap = UnpackScaleNormal(i.detailNormal, _DetailNormalMapScale);
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half3 blendedNormal = lerp(nMap, BlendNormals(nMap, detNMap), i.detailMask.r);
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half3 tspace0 = half3(i.tangent.x, i.bitangent.x, i.normal.x);
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half3 tspace1 = half3(i.tangent.y, i.bitangent.y, i.normal.y);
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half3 tspace2 = half3(i.tangent.z, i.bitangent.z, i.normal.z);
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half3 calcedNormal;
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calcedNormal.x = dot(tspace0, blendedNormal);
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calcedNormal.y = dot(tspace1, blendedNormal);
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calcedNormal.z = dot(tspace2, blendedNormal);
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calcedNormal = normalize(calcedNormal);
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half3 bumpedTangent = cross(i.bitangent, calcedNormal);
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half3 bumpedBitangent = cross(calcedNormal, bumpedTangent);
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i.normal = calcedNormal;
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i.tangent = bumpedTangent;
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i.bitangent = bumpedBitangent;
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}
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else
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{
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float3 vcol = i.color.rgb * 2 - 1;
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half3 tspace0 = half3(i.tangent.x, i.bitangent.x, i.normal.x);
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half3 tspace1 = half3(i.tangent.y, i.bitangent.y, i.normal.y);
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half3 tspace2 = half3(i.tangent.z, i.bitangent.z, i.normal.z);
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half3 calcedNormal;
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calcedNormal.x = dot(tspace0, vcol);
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calcedNormal.y = dot(tspace1, vcol);
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calcedNormal.z = dot(tspace2, vcol);
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//calcedNormal = calcedNormal;
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i.normal = normalize(calcedNormal);
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}
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}
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void InitializeTextureUVs(
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#if defined(Geometry)
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in g2f i,
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#else
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in VertexOutput i,
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#endif
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inout TextureUV t)
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{
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#if defined(PatreonEyeTracking)
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float2 eyeUvOffset = eyeOffsets(i.uv, i.objPos, i.worldPos, i.ntb[0]);
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i.uv = eyeUvOffset;
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i.uv1 = eyeUvOffset;
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#endif
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half2 uvSetAlbedo = (_UVSetAlbedo == 0) ? i.uv : i.uv1;
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t.albedoUV = TRANSFORM_TEX(uvSetAlbedo, _MainTex);
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half2 uvSetClipMap = (_UVSetClipMap == 0) ? i.uv : i.uv1;
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t.clipMapUV = TRANSFORM_TEX(uvSetClipMap, _ClipMap);
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half2 uvSetDissolveMap = (_UVSetDissolve == 0) ? i.uv : i.uv1;
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t.dissolveUV = TRANSFORM_TEX(uvSetDissolveMap, _DissolveTexture);
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#if !defined(UNITY_PASS_SHADOWCASTER)
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half2 uvSetNormalMap = (_UVSetNormal == 0) ? i.uv : i.uv1;
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t.normalMapUV = TRANSFORM_TEX(uvSetNormalMap, _BumpMap);
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half2 uvSetEmissionMap = (_UVSetEmission == 0) ? i.uv : i.uv1;
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t.emissionMapUV = TRANSFORM_TEX(uvSetEmissionMap, _EmissionMap);
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half2 uvSetMetallicGlossMap = (_UVSetMetallic == 0) ? i.uv : i.uv1;
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t.metallicGlossMapUV = TRANSFORM_TEX(uvSetMetallicGlossMap, _MetallicGlossMap);
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half2 uvSetOcclusion = (_UVSetOcclusion == 0) ? i.uv : i.uv1;
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t.occlusionUV = TRANSFORM_TEX(uvSetOcclusion, _OcclusionMap);
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half2 uvSetDetailNormal = (_UVSetDetNormal == 0) ? i.uv : i.uv1;
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t.detailNormalUV = TRANSFORM_TEX(uvSetDetailNormal, _DetailNormalMap);
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half2 uvSetDetailMask = (_UVSetDetMask == 0) ? i.uv : i.uv1;
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t.detailMaskUV = TRANSFORM_TEX(uvSetDetailMask, _DetailMask);
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half2 uvSetSpecularMap = (_UVSetSpecular == 0) ? i.uv : i.uv1;
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t.specularMapUV = TRANSFORM_TEX(uvSetSpecularMap, _SpecularMap);
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half2 uvSetThickness = (_UVSetThickness == 0) ? i.uv : i.uv1;
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t.thicknessMapUV = TRANSFORM_TEX(uvSetThickness, _ThicknessMap);
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half2 uvSetReflectivityMask = (_UVSetReflectivity == 0) ? i.uv : i.uv1;
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t.reflectivityMaskUV = TRANSFORM_TEX(uvSetReflectivityMask, _ReflectivityMask);
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#endif
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}
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float Remap_Float(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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half3 rgb2hsv(half3 c)
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{
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half4 K = half4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
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half4 p = lerp(half4(c.bg, K.wz), half4(c.gb, K.xy), step(c.b, c.g));
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half4 q = lerp(half4(p.xyw, c.r), half4(c.r, p.yzx), step(p.x, c.r));
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float d = q.x - min(q.w, q.y);
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float e = 1.0e-10;
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return half3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
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}
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half3 hsv2rgb(half3 c)
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{
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half4 K = half4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
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half3 p = abs(frac(c.xxx + K.xyz) * 6.0 - K.www);
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return c.z * lerp(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
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}
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void InitializeTextureUVsMerged(
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#if defined(Geometry)
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in g2f i,
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#else
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in VertexOutput i,
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#endif
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inout TextureUV t)
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{
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half2 uvSetAlbedo = (_UVSetAlbedo == 0) ? i.uv : i.uv1;
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t.albedoUV = TRANSFORM_TEX(uvSetAlbedo, _MainTex);
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t.normalMapUV = t.albedoUV;
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t.emissionMapUV = t.albedoUV;
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t.metallicGlossMapUV = t.albedoUV;
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t.occlusionUV = t.albedoUV;
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t.detailNormalUV = t.albedoUV;
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t.detailMaskUV = t.albedoUV;
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t.specularMapUV = t.albedoUV;
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t.thicknessMapUV = t.albedoUV;
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t.reflectivityMaskUV = t.albedoUV;
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t.clipMapUV = t.albedoUV;
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//Dissolve map makes sense to be on a sep. UV always.
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half2 uvSetDissolveMap = (_UVSetDissolve == 0) ? i.uv : i.uv1;
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t.dissolveUV = TRANSFORM_TEX(uvSetDissolveMap, _DissolveTexture);
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}
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bool IsInMirror()
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{
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return unity_CameraProjection[2][0] != 0.f || unity_CameraProjection[2][1] != 0.f;
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}
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inline half Dither8x8Bayer( int x, int y )
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{
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const half dither[ 64 ] = {
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1, 49, 13, 61, 4, 52, 16, 64,
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33, 17, 45, 29, 36, 20, 48, 32,
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9, 57, 5, 53, 12, 60, 8, 56,
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41, 25, 37, 21, 44, 28, 40, 24,
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3, 51, 15, 63, 2, 50, 14, 62,
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35, 19, 47, 31, 34, 18, 46, 30,
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11, 59, 7, 55, 10, 58, 6, 54,
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43, 27, 39, 23, 42, 26, 38, 22};
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int r = y * 8 + x;
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return dither[r] / 64;
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}
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half calcDither(half2 screenPos)
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{
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half dither = Dither8x8Bayer(fmod(screenPos.x, 8), fmod(screenPos.y, 8));
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return dither;
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}
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half2 calcScreenUVs(half4 screenPos)
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{
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half2 uv = screenPos / (screenPos.w + 0.0000000001); //0.0x1 Stops division by 0 warning in console.
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#if UNITY_SINGLE_PASS_STEREO
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uv.xy *= half2(_ScreenParams.x * 2, _ScreenParams.y);
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#else
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uv.xy *= _ScreenParams.xy;
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#endif
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return uv;
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}
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half3 calcViewDir(half3 worldPos)
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{
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half3 viewDir = _WorldSpaceCameraPos - worldPos;
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return normalize(viewDir);
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}
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half3 calcStereoViewDir(half3 worldPos)
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{
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#if UNITY_SINGLE_PASS_STEREO
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half3 cameraPos = half3((unity_StereoWorldSpaceCameraPos[0]+ unity_StereoWorldSpaceCameraPos[1])*.5);
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#else
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half3 cameraPos = _WorldSpaceCameraPos;
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#endif
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half3 viewDir = cameraPos - worldPos;
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return normalize(viewDir);
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}
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half2 matcapSample(half3 worldUp, half3 viewDirection, half3 normalDirection)
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{
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half3 worldViewUp = normalize(worldUp - viewDirection * dot(viewDirection, worldUp));
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half3 worldViewRight = normalize(cross(viewDirection, worldViewUp));
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half2 matcapUV = half2(dot(worldViewRight, normalDirection), dot(worldViewUp, normalDirection)) * 0.5 + 0.5;
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return matcapUV;
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}
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//Reflection direction, worldPos, unity_SpecCube0_ProbePosition, unity_SpecCube0_BoxMin, unity_SpecCube0_BoxMax
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half3 getReflectionUV(half3 direction, half3 position, half4 cubemapPosition, half3 boxMin, half3 boxMax)
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{
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#if UNITY_SPECCUBE_BOX_PROJECTION
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if (cubemapPosition.w > 0) {
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half3 factors = ((direction > 0 ? boxMax : boxMin) - position) / direction;
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half scalar = min(min(factors.x, factors.y), factors.z);
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direction = direction * scalar + (position - cubemapPosition);
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}
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#endif
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return direction;
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}
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half3 getEnvMap(XSLighting i, DotProducts d, float blur, half3 reflDir, half3 indirectLight, half3 wnormal)
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{//This function handls Unity style reflections, Matcaps, and a baked in fallback cubemap.
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half3 envMap = half3(0,0,0);
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#if defined(UNITY_PASS_FORWARDBASE) //Indirect PBR specular should only happen in the forward base pass. Otherwise each extra light adds another indirect sample, which could mean you're getting too much light.
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half3 reflectionUV1 = getReflectionUV(reflDir, i.worldPos, unity_SpecCube0_ProbePosition, unity_SpecCube0_BoxMin, unity_SpecCube0_BoxMax);
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half4 probe0 = UNITY_SAMPLE_TEXCUBE_LOD(unity_SpecCube0, reflectionUV1, blur);
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half3 probe0sample = DecodeHDR(probe0, unity_SpecCube0_HDR);
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half3 indirectSpecular;
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half interpolator = unity_SpecCube0_BoxMin.w;
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UNITY_BRANCH
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if (interpolator < 0.99999)
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{
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half3 reflectionUV2 = getReflectionUV(reflDir, i.worldPos, unity_SpecCube1_ProbePosition, unity_SpecCube1_BoxMin, unity_SpecCube1_BoxMax);
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half4 probe1 = UNITY_SAMPLE_TEXCUBE_SAMPLER_LOD(unity_SpecCube1, unity_SpecCube0, reflectionUV2, blur);
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half3 probe1sample = DecodeHDR(probe1, unity_SpecCube1_HDR);
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indirectSpecular = lerp(probe1sample, probe0sample, interpolator);
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}
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else
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{
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indirectSpecular = probe0sample;
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}
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envMap = indirectSpecular;
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#endif
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return envMap;
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}
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float AlphaAdjust(float alphaToAdj, float3 vColor)
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{
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_ClipAgainstVertexColorGreaterZeroFive = saturate(_ClipAgainstVertexColorGreaterZeroFive); //So the lerp doesn't go crazy
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_ClipAgainstVertexColorLessZeroFive = saturate(_ClipAgainstVertexColorLessZeroFive);
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float modR = vColor.r < 0.5 ? _ClipAgainstVertexColorLessZeroFive.r : _ClipAgainstVertexColorGreaterZeroFive.r;
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float modG = vColor.g < 0.5 ? _ClipAgainstVertexColorLessZeroFive.g : _ClipAgainstVertexColorGreaterZeroFive.g;
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float modB = vColor.b < 0.5 ? _ClipAgainstVertexColorLessZeroFive.b : _ClipAgainstVertexColorGreaterZeroFive.b;
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alphaToAdj *= lerp(0, 1, lerp(1, modR, step(0.01, vColor.r)));
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alphaToAdj *= lerp(0, 1, lerp(1, modG, step(0.01, vColor.g)));
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alphaToAdj *= lerp(0, 1, lerp(1, modB, step(0.01, vColor.b)));
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return alphaToAdj;
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}
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void calcDissolve(inout XSLighting i, inout float4 col)
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{
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#ifdef _ALPHATEST_ON
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half dissolveAmt = Remap_Float(i.dissolveMask.x, float2(0,1), float2(0.1, 0.9));
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half dissolveProgress = saturate(_DissolveProgress + lerp(0, 1-AlphaAdjust(1, i.clipMap.rgb), _UseClipsForDissolve));
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half dissolve = 0;
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if (_DissolveCoordinates == 0)
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{
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dissolve = dissolveAmt - dissolveProgress;
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clip(dissolve);
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}
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if(_DissolveCoordinates == 1)
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{
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half distToCenter = 1-length(i.objPos);
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dissolve = ((distToCenter + dissolveAmt) * 0.5) - dissolveProgress;
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clip(dissolve);
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}
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if(_DissolveCoordinates == 2)
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{
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half distToCenter = (1-i.objPos.y) * 0.5 + 0.5;
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dissolve = ((distToCenter + dissolveAmt) * 0.5) - dissolveProgress;
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clip(dissolve);
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}
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#if !defined(UNITY_PASS_SHADOWCASTER)
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float4 dissCol = _DissolveColor;
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dissCol.rgb = rgb2hsv(dissCol.rgb);
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dissCol.x += fmod(_Hue, 360);
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dissCol.y = saturate(dissCol.y * _Saturation);
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dissCol.z *= _Value;
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dissCol.rgb = hsv2rgb(dissCol.rgb);
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half dissolveEdge = smoothstep(dissolve, dissolve - (_DissolveStrength * 0.01), dissolve * dissolveAmt);
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col.rgb += (1-dissolveEdge) * dissCol.rgb;
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#endif
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#endif
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}
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void calcAlpha(inout XSLighting i)
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{
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i.alpha = 1;
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#ifdef _ALPHABLEND_ON
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i.alpha = i.albedo.a;
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#ifdef UNITY_PASS_SHADOWCASTER
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half dither = calcDither(i.screenUV.xy);
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clip(i.alpha - dither);
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#endif
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#endif
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#ifdef _ALPHATEST_ON
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float modifiedAlpha = lerp(AlphaAdjust(i.albedo.a, i.clipMap.rgb), i.albedo.a, _UseClipsForDissolve);
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if(_BlendMode >= 3)
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{
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half dither = calcDither(i.screenUV.xy);
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i.alpha = modifiedAlpha - (dither * (1-i.albedo.a) * 0.15);
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}
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if(_BlendMode == 2)
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{
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half dither = calcDither(i.screenUV.xy);
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float fadeDist = abs(_FadeDitherDistance);
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float d = distance(_WorldSpaceCameraPos, i.worldPos);
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d = smoothstep(fadeDist, fadeDist + 0.05, d);
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d = lerp(d, 1-d, saturate(step(0, _FadeDitherDistance)));
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dither += lerp(0, d, saturate(_FadeDither));
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clip(modifiedAlpha - dither);
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}
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if(_BlendMode == 1)
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{
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clip(modifiedAlpha - _Cutoff);
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}
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#endif
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}
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// //Halftone functions, finish implementing later.. Not correct right now.
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float2 SphereUV( float3 coords /*viewDir?*/)
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{
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float3 nc = normalize(coords);
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float lat = acos(nc.y);
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float lon = atan2(nc.z, nc.x);
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float2 coord = 1.0 - (float2(lon, lat) * float2(1.0/UNITY_PI, 1.0/UNITY_PI));
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return (coord + float4(0, 1-unity_StereoEyeIndex,1,1.0).xy) * float4(0, 1-unity_StereoEyeIndex,1,1.0).zw;
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}
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half2 rotateUV(half2 uv, half rotation)
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{
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half mid = 0.5;
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return half2(
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cos(rotation) * (uv.x - mid) + sin(rotation) * (uv.y - mid) + mid,
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cos(rotation) * (uv.y - mid) - sin(rotation) * (uv.x - mid) + mid
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);
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}
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half DotHalftone(XSLighting i, half scalar) //Scalar can be anything from attenuation to a dot product
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{
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bool inMirror = IsInMirror();
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half2 uv = SphereUV(calcViewDir(i.worldPos));
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uv.xy *= _HalftoneDotAmount;
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half2 nearest = 2 * frac(100 * uv) - 1;
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half dist = length(nearest);
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half dotSize = 100 * _HalftoneDotSize * scalar;
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half dotMask = step(dotSize, dist);
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return lerp(1, 1-dotMask, smoothstep(0, 0.4, 1/distance(i.worldPos, _WorldSpaceCameraPos)));;
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}
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half LineHalftone(XSLighting i, half scalar)
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{
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// #if defined(DIRECTIONAL)
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// scalar = saturate(scalar + ((1-i.attenuation) * 0.2));
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// #endif
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bool inMirror = IsInMirror();
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half2 uv = SphereUV(calcViewDir(i.worldPos));
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uv = rotateUV(uv, -0.785398);
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uv.x = sin(uv.x * _HalftoneLineAmount * scalar);
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half2 steppedUV = smoothstep(0,0.2,uv.x);
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half lineMask = lerp(1, steppedUV, smoothstep(0, 0.4, 1/distance(i.worldPos, _WorldSpaceCameraPos)));
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return saturate(lineMask);
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}
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// |