Initial commit

2026-06-03 04:34:26 -07:00 · 2022-01-22 20:13:49 -08:00
parent f9d23e5bcf
commit 687473573d
878 changed files with 70957 additions and 0 deletions
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+// Alloy Physical Shader Framework
+// Copyright 2013-2017 RUST LLC.
+// http://www.alloy.rustltd.com/
+
+/////////////////////////////////////////////////////////////////////////////////
+/// @file VertexBlend.cginc
+/// @brief 3-4 splat blending with vertex color weights.
+/////////////////////////////////////////////////////////////////////////////////
+
+#ifndef ALLOY_SHADERS_FEATURE_VERTEX_BLEND_CGINC
+#define ALLOY_SHADERS_FEATURE_VERTEX_BLEND_CGINC
+
+#if !defined(A_ALPHA_SPLAT_ON) && defined(_SPECGLOSSMAP)
+    #define A_ALPHA_SPLAT_ON
+#endif
+
+#ifdef A_VERTEX_BLEND_ON
+    #ifndef A_VERTEX_COLOR_IS_DATA
+        #define A_VERTEX_COLOR_IS_DATA
+    #endif
+
+    #ifndef A_METALLIC_ON
+        #define A_METALLIC_ON
+    #endif
+
+    #ifndef A_SPECULAR_TINT_ON
+        #define A_SPECULAR_TINT_ON
+    #endif
+
+    #if !defined(A_AMBIENT_OCCLUSION_ON) && !defined(A_ROUGHNESS_SOURCE_BASE_COLOR_ALPHA)
+        #define A_AMBIENT_OCCLUSION_ON
+    #endif
+#endif
+
+#include "Assets/Alloy/Shaders/Framework/Feature.cginc"
+
+#ifdef A_VERTEX_BLEND_ON
+    half _TriplanarBlendSharpness;
+
+    half4 _Splat0Tint;
+    A_SAMPLER_2D(_Splat0);
+    sampler2D _MaterialMap0;
+    sampler2D _Normal0;
+    half _Metallic0;
+    half _SplatSpecularity0;
+    half _SplatSpecularTint0;
+    half _SplatRoughness0;
+    half _SplatOcclusion0;
+    half _SplatBumpScale0;
+
+    half4 _Splat1Tint;
+    A_SAMPLER_2D(_Splat1);
+    sampler2D _MaterialMap1;
+    sampler2D _Normal1;
+    half _Metallic1;
+    half _SplatSpecularity1;
+    half _SplatSpecularTint1;
+    half _SplatRoughness1;
+    half _SplatOcclusion1;
+    half _SplatBumpScale1;
+
+    half4 _Splat2Tint;
+    A_SAMPLER_2D(_Splat2);
+    sampler2D _MaterialMap2;
+    sampler2D _Normal2;
+    half _Metallic2;
+    half _SplatSpecularity2;
+    half _SplatSpecularTint2;
+    half _SplatRoughness2;
+    half _SplatOcclusion2;
+    half _SplatBumpScale2;
+
+    #ifdef A_ALPHA_SPLAT_ON
+        half4 _Splat3Tint;
+        A_SAMPLER_2D(_Splat3);
+        sampler2D _MaterialMap3;
+        sampler2D _Normal3;
+        half _Metallic3;
+        half _SplatSpecularity3;
+        half _SplatSpecularTint3;
+        half _SplatRoughness3;
+        half _SplatOcclusion3;
+        half _SplatBumpScale3;
+    #endif
+#endif
+
+void aVertexBlend(
+    inout ASurface s)
+{
+#ifdef A_VERTEX_BLEND_ON
+    ASplatContext sc = aNewSplatContext(s, _TriplanarBlendSharpness, 1.0f);
+    ASplat sp0 = aNewSplat(sc, A_SAMPLER_2D_INPUT(_Splat0), _MaterialMap0, _Normal0, _Splat0Tint, 0.0h, _Metallic0, _SplatSpecularity0, _SplatSpecularTint0, _SplatRoughness0, _SplatOcclusion0, _SplatBumpScale0);
+    ASplat sp1 = aNewSplat(sc, A_SAMPLER_2D_INPUT(_Splat1), _MaterialMap1, _Normal1, _Splat1Tint, 0.0h, _Metallic1, _SplatSpecularity1, _SplatSpecularTint1, _SplatRoughness1, _SplatOcclusion1, _SplatBumpScale1);
+    ASplat sp2 = aNewSplat(sc, A_SAMPLER_2D_INPUT(_Splat2), _MaterialMap2, _Normal2, _Splat2Tint, 0.0h, _Metallic2, _SplatSpecularity2, _SplatSpecularTint2, _SplatRoughness2, _SplatOcclusion2, _SplatBumpScale2);
+
+    #ifdef A_ALPHA_SPLAT_ON
+        half4 splatControl = s.vertexColor;
+        ASplat sp3 = aNewSplat(sc, A_SAMPLER_2D_INPUT(_Splat3), _MaterialMap3, _Normal3, _Splat3Tint, 0.0h, _Metallic3, _SplatSpecularity3, _SplatSpecularTint3, _SplatRoughness3, _SplatOcclusion3, _SplatBumpScale3);
+    
+        splatControl /= (dot(splatControl, A_ONE4) + A_EPSILON);
+        aApplyTerrainSplats(s, splatControl, sp0, sp1, sp2, sp3);
+    #else
+        half3 splatControl = s.vertexColor.xyz;
+    
+        splatControl /= (dot(splatControl, A_ONE) + A_EPSILON);
+        aApplyTerrainSplats(s, splatControl, sp0, sp1, sp2);
+    #endif
+    
+    aCutout(s);
+#endif
+}
+
+#endif // ALLOY_SHADERS_FEATURE_VERTEX_BLEND_CGINC