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// Unity built-in shader source. Copyright (c) 2016 Unity Technologies. MIT license (see license.txt)
#ifndef UNITY_STANDARD_SHADOW_INCLUDED
#define UNITY_STANDARD_SHADOW_INCLUDED
// NOTE: had to split shadow functions into separate file,
// otherwise compiler gives trouble with LIGHTING_COORDS macro (in UnityStandardCore.cginc)
#include "UnityCG.cginc"
#include "UnityShaderVariables.cginc"
#include "UnityInstancing.cginc"
#include "UnityStandardConfig.cginc"
#include "UnityStandardUtils.cginc"
#if (defined(_ALPHABLEND_ON) || defined(_ALPHAPREMULTIPLY_ON)) && defined(UNITY_USE_DITHER_MASK_FOR_ALPHABLENDED_SHADOWS)
#define UNITY_STANDARD_USE_DITHER_MASK 1
#endif
// Need to output UVs in shadow caster, since we need to sample texture and do clip/dithering based on it
#if defined(_ALPHATEST_ON) || defined(_ALPHABLEND_ON) || defined(_ALPHAPREMULTIPLY_ON)
#define UNITY_STANDARD_USE_SHADOW_UVS 1
#endif
// Has a non-empty shadow caster output struct (it's an error to have empty structs on some platforms...)
#if !defined(V2F_SHADOW_CASTER_NOPOS_IS_EMPTY) || defined(UNITY_STANDARD_USE_SHADOW_UVS)
#define UNITY_STANDARD_USE_SHADOW_OUTPUT_STRUCT 1
#endif
#ifdef UNITY_STEREO_INSTANCING_ENABLED
#define UNITY_STANDARD_USE_STEREO_SHADOW_OUTPUT_STRUCT 1
#endif
half4 _Color;
half _Cutoff;
sampler2D _MainTex;
float4 _MainTex_ST;
#ifdef UNITY_STANDARD_USE_DITHER_MASK
sampler3D _DitherMaskLOD;
#endif
// Handle PremultipliedAlpha from Fade or Transparent shading mode
half4 _SpecColor;
half _Metallic;
#ifdef _SPECGLOSSMAP
sampler2D _SpecGlossMap;
#endif
#ifdef _METALLICGLOSSMAP
sampler2D _MetallicGlossMap;
#endif
#if defined(UNITY_STANDARD_USE_SHADOW_UVS) && defined(_PARALLAXMAP)
sampler2D _ParallaxMap;
half _Parallax;
#endif
//MFX
#include "Assets/MaterializeFX/Shaders/cginc/MFX.cginc"
half MetallicSetup_ShadowGetOneMinusReflectivity(half2 uv)
{
half metallicity = _Metallic;
#ifdef _METALLICGLOSSMAP
metallicity = tex2D(_MetallicGlossMap, uv).r;
#endif
return OneMinusReflectivityFromMetallic(metallicity);
}
half RoughnessSetup_ShadowGetOneMinusReflectivity(half2 uv)
{
half metallicity = _Metallic;
#ifdef _METALLICGLOSSMAP
metallicity = tex2D(_MetallicGlossMap, uv).r;
#endif
return OneMinusReflectivityFromMetallic(metallicity);
}
half SpecularSetup_ShadowGetOneMinusReflectivity(half2 uv)
{
half3 specColor = _SpecColor.rgb;
#ifdef _SPECGLOSSMAP
specColor = tex2D(_SpecGlossMap, uv).rgb;
#endif
return (1 - SpecularStrength(specColor));
}
// SHADOW_ONEMINUSREFLECTIVITY(): workaround to get one minus reflectivity based on UNITY_SETUP_BRDF_INPUT
#define SHADOW_JOIN2(a, b) a##b
#define SHADOW_JOIN(a, b) SHADOW_JOIN2(a,b)
#define SHADOW_ONEMINUSREFLECTIVITY SHADOW_JOIN(UNITY_SETUP_BRDF_INPUT, _ShadowGetOneMinusReflectivity)
struct VertexInput
{
float4 vertex : POSITION;
float3 normal : NORMAL;
float2 uv0 : TEXCOORD0;
#if defined(UNITY_STANDARD_USE_SHADOW_UVS) && defined(_PARALLAXMAP)
half4 tangent : TANGENT;
#endif
UNITY_VERTEX_INPUT_INSTANCE_ID
};
#ifdef UNITY_STANDARD_USE_SHADOW_OUTPUT_STRUCT
struct VertexOutputShadowCaster
{
V2F_SHADOW_CASTER_NOPOS
#if defined(UNITY_STANDARD_USE_SHADOW_UVS)
float2 tex : TEXCOORD1;
#if defined(_PARALLAXMAP)
half3 viewDirForParallax : TEXCOORD2;
#endif
#endif
//MFX
float4 mfxUv : TEXCOORD5;
float3 worldPos : TEXCOORD6;
};
#endif
#ifdef UNITY_STANDARD_USE_STEREO_SHADOW_OUTPUT_STRUCT
struct VertexOutputStereoShadowCaster
{
UNITY_VERTEX_OUTPUT_STEREO
//MFX
float4 mfxUv : TEXCOORD5;
float3 worldPos : TEXCOORD6;
};
#endif
// We have to do these dances of outputting SV_POSITION separately from the vertex shader,
// and inputting VPOS in the pixel shader, since they both map to "POSITION" semantic on
// some platforms, and then things don't go well.
void vertShadowCaster (VertexInput v
, out float4 opos : SV_POSITION
#ifdef UNITY_STANDARD_USE_SHADOW_OUTPUT_STRUCT
, out VertexOutputShadowCaster o
#endif
#ifdef UNITY_STANDARD_USE_STEREO_SHADOW_OUTPUT_STRUCT
, out VertexOutputStereoShadowCaster os
#endif
)
{
UNITY_SETUP_INSTANCE_ID(v);
#ifdef UNITY_STANDARD_USE_SHADOW_OUTPUT_STRUCT
UNITY_INITIALIZE_OUTPUT(VertexOutputShadowCaster, o);
#endif
#ifdef UNITY_STANDARD_USE_STEREO_SHADOW_OUTPUT_STRUCT
UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(os);
#endif
TRANSFER_SHADOW_CASTER_NOPOS(o,opos)
#if defined(UNITY_STANDARD_USE_SHADOW_UVS)
o.tex = TRANSFORM_TEX(v.uv0, _MainTex);
#ifdef _PARALLAXMAP
TANGENT_SPACE_ROTATION;
o.viewDirForParallax = mul (rotation, ObjSpaceViewDir(v.vertex));
#endif
#endif
#ifdef UNITY_STANDARD_USE_SHADOW_OUTPUT_STRUCT
//MFX
PassMfxVertex2Fragment(v.uv0.xy, o.mfxUv);
o.worldPos = mul(unity_ObjectToWorld, v.vertex).xyz;
#endif
#ifdef UNITY_STANDARD_USE_STEREO_SHADOW_OUTPUT_STRUCT
//MFX
PassMfxVertex2Fragment(v.uv0.xy, os.mfxUv);
os.worldPos = mul(unity_ObjectToWorld, v.vertex).xyz;
#endif
}
half4 fragShadowCaster (UNITY_POSITION(vpos)
#ifdef UNITY_STANDARD_USE_SHADOW_OUTPUT_STRUCT
, VertexOutputShadowCaster i
#endif
) : SV_Target
{
#if defined(UNITY_STANDARD_USE_SHADOW_UVS)
#if defined(_PARALLAXMAP) && (SHADER_TARGET >= 30)
half3 viewDirForParallax = normalize(i.viewDirForParallax);
fixed h = tex2D (_ParallaxMap, i.tex.xy).g;
half2 offset = ParallaxOffset1Step (h, _Parallax, viewDirForParallax);
i.tex.xy += offset;
#endif
//MFX
half alpha = GetMfxDissolve(i.mfxUv, i.worldPos);
MfxClip(alpha);
// half alpha = tex2D(_MainTex, i.tesx).a * _Color.a;
// #if defined(_ALPHATEST_ON)
// clip (alpha - _Cutoff);
// #endif
// #if defined(_ALPHABLEND_ON) || defined(_ALPHAPREMULTIPLY_ON)
// #if defined(_ALPHAPREMULTIPLY_ON)
// half outModifiedAlpha;
// PreMultiplyAlpha(half3(0, 0, 0), alpha, SHADOW_ONEMINUSREFLECTIVITY(i.tex), outModifiedAlpha);
// alpha = outModifiedAlpha;
// #endif
// #if defined(UNITY_STANDARD_USE_DITHER_MASK)
// // Use dither mask for alpha blended shadows, based on pixel position xy
// // and alpha level. Our dither texture is 4x4x16.
// #ifdef LOD_FADE_CROSSFADE
// #define _LOD_FADE_ON_ALPHA
// alpha *= unity_LODFade.y;
// #endif
// half alphaRef = tex3D(_DitherMaskLOD, float3(vpos.xy*0.25,alpha*0.9375)).a;
// clip (alphaRef - 0.01);
// #else
// clip (alpha - _Cutoff);
// #endif
// #endif
#endif // #if defined(UNITY_STANDARD_USE_SHADOW_UVS)
#ifdef LOD_FADE_CROSSFADE
#ifdef _LOD_FADE_ON_ALPHA
#undef _LOD_FADE_ON_ALPHA
#else
UnityApplyDitherCrossFade(vpos.xy);
#endif
#endif
SHADOW_CASTER_FRAGMENT(i)
}
#endif // UNITY_STANDARD_SHADOW_INCLUDED
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