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#ifndef MATCAP
#define MATCAP
UNITY_DECLARE_TEX2D_NOSAMPLER(_Matcap);
POI_TEXTURE_NOSAMPLER(_MatcapMask);
float _MatcapBorder;
float4 _MatcapColor;
float _MatcapIntensity;
float _MatcapReplace;
float _MatcapMultiply;
float _MatcapAdd;
float _MatcapEnable;
float _MatcapLightMask;
float _MatcapEmissionStrength;
uint _MatcapNormal;
UNITY_DECLARE_TEX2D_NOSAMPLER(_Matcap2);
POI_TEXTURE_NOSAMPLER(_Matcap2Mask);
float _Matcap2Border;
float4 _Matcap2Color;
float _Matcap2Intensity;
float _Matcap2Replace;
float _Matcap2Multiply;
float _Matcap2Add;
float _Matcap2Enable;
float _Matcap2LightMask;
float _Matcap2EmissionStrength;
uint _Matcap2Normal;
void blendMatcap(inout float4 finalColor, float add, float multiply, float replace, float4 matcapColor, float matcapMask, inout float3 matcapEmission, float emissionStrength
#ifdef POI_LIGHTING
,float matcapLightMask
#endif
#ifdef POI_BLACKLIGHT
,uint blackLightMaskIndex
#endif
)
{
#ifdef POI_LIGHTING
if (matcapLightMask)
{
matcapMask *= lerp(1, poiLight.rampedLightMap, matcapLightMask);
}
#endif
#ifdef POI_BLACKLIGHT
if(blackLightMaskIndex != 4)
{
matcapMask *= blackLightMask[blackLightMaskIndex];
}
#endif
finalColor.rgb = lerp(finalColor.rgb, matcapColor.rgb, replace * matcapMask * matcapColor.a);
finalColor.rgb *= lerp(1, matcapColor.rgb, multiply * matcapMask * matcapColor.a);
finalColor.rgb += matcapColor.rgb * add * matcapMask * matcapColor.a;
matcapEmission += matcapColor.rgb * emissionStrength * matcapMask * matcapColor.a;
}
float3 applyMatcap(inout float4 finalColor)
{
float4 matcap = 0;
float matcapMask = 0;
float4 matcap2 = 0;
float matcap2Mask = 0;
float3 matcapEmission = 0;
// Both matcaps use the same coordinates
half3 worldViewUp = normalize(half3(0, 1, 0) - poiCam.viewDir * dot(poiCam.viewDir, half3(0, 1, 0)));
half3 worldViewRight = normalize(cross(poiCam.viewDir, worldViewUp));
// Matcap 1
half2 matcapUV = half2(dot(worldViewRight, poiMesh.normals[_MatcapNormal]), dot(worldViewUp, poiMesh.normals[_MatcapNormal])) * _MatcapBorder + 0.5;
matcap = UNITY_SAMPLE_TEX2D_SAMPLER(_Matcap, _MainTex, matcapUV) * _MatcapColor;
matcap.rgb *= _MatcapIntensity;
matcapMask = POI2D_SAMPLER_PAN(_MatcapMask, _MainTex, poiMesh.uv[_MatcapMaskUV], _MatcapMaskPan);
blendMatcap(finalColor, _MatcapAdd, _MatcapMultiply, _MatcapReplace, matcap, matcapMask, matcapEmission, _MatcapEmissionStrength
#ifdef POI_LIGHTING
,_MatcapLightMask
#endif
#ifdef POI_BLACKLIGHT
,_BlackLightMaskMatcap
#endif
);
// Matcap 2
UNITY_BRANCH
if (_Matcap2Enable)
{
half2 matcapUV2 = half2(dot(worldViewRight, poiMesh.normals[_Matcap2Normal]), dot(worldViewUp, poiMesh.normals[_Matcap2Normal])) * _Matcap2Border + 0.5;
matcap2 = UNITY_SAMPLE_TEX2D_SAMPLER(_Matcap2, _MainTex, matcapUV2) * _Matcap2Color;
matcap2.rgb *= _Matcap2Intensity;
matcap2Mask = POI2D_SAMPLER_PAN(_Matcap2Mask, _MainTex, poiMesh.uv[_Matcap2MaskUV], _Matcap2MaskPan);
blendMatcap(finalColor, _Matcap2Add, _Matcap2Multiply, _Matcap2Replace, matcap2, matcap2Mask, matcapEmission, _Matcap2EmissionStrength
#ifdef POI_LIGHTING
,_Matcap2LightMask
#endif
#ifdef POI_BLACKLIGHT
,_BlackLightMaskMatcap2
#endif
);
}
return matcapEmission;
}
#endif
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