Initial commit

2026-06-02 20:24:26 -07:00 · 2022-01-22 20:13:49 -08:00
parent f9d23e5bcf
commit 687473573d
878 changed files with 70957 additions and 0 deletions
@@ -0,0 +1,96 @@
+// Alloy Physical Shader Framework
+// Copyright 2013-2017 RUST LLC.
+// http://www.alloy.rustltd.com/
+
+/////////////////////////////////////////////////////////////////////////////////
+/// @file Detail.cginc
+/// @brief Surface detail materials and normals.
+/////////////////////////////////////////////////////////////////////////////////
+
+#ifndef ALLOY_SHADERS_FEATURE_DETAIL_CGINC
+#define ALLOY_SHADERS_FEATURE_DETAIL_CGINC
+
+#if !defined(A_DETAIL_ON) && defined(_DETAIL_MULX2)
+    #define A_DETAIL_ON
+#endif
+
+#if !defined(A_DETAIL_MASK_VERTEX_COLOR_ALPHA_ON) && defined(_NORMALMAP)
+    #define A_DETAIL_MASK_VERTEX_COLOR_ALPHA_ON
+#endif
+
+#include "Assets/Alloy/Shaders/Framework/Feature.cginc"
+
+#ifdef A_DETAIL_ON
+    #ifndef A_DETAIL_MASK_OFF
+        /// Mask that controls the detail influence on the base material.
+        /// Expects an alpha data map.
+        sampler2D _DetailMask;
+    #endif
+    
+    /// Controls how much the vertex alpha masks the detail maps.
+    /// Expects values in the range [0,1].
+    half _DetailMaskStrength;
+
+    #ifndef A_DETAIL_COLOR_MAP_OFF
+        /// Detail base color blending mode.
+        /// Expects either 0 or 1.
+        float _DetailMode;
+
+        /// Detail base color map.
+        /// Expects an RGB map with sRGB sampling.
+        A_SAMPLER_2D(_DetailAlbedoMap);
+    #endif
+        
+    #ifndef A_DETAIL_NORMAL_MAP_OFF
+        /// Detail normal map.
+        /// Expects a compressed normal map.
+        A_SAMPLER_2D(_DetailNormalMap);
+    #endif
+
+    /// Controls the detail influence on the base material.
+    /// Expects values in the range [0,1].
+    half _DetailWeight;
+
+    #ifndef A_DETAIL_NORMAL_MAP_OFF
+        /// Normal map XY scale.
+        half _DetailNormalMapScale;
+    #endif
+#endif
+
+void aDetail(
+    inout ASurface s) 
+{
+#ifdef A_DETAIL_ON
+    half mask = s.mask * _DetailWeight;
+    
+    #ifndef A_DETAIL_MASK_OFF
+        #ifdef A_DETAIL_MASK_VERTEX_COLOR_ALPHA_ON
+            half alpha = s.vertexColor.a;
+        #else
+            half alpha = tex2D(_DetailMask, s.baseUv).a;
+        #endif
+
+        mask *= aLerpOneTo(alpha, _DetailMaskStrength);
+    #endif
+    
+    #ifndef A_DETAIL_COLOR_MAP_OFF
+        float2 detailUv = A_TEX_TRANSFORM_UV_SCROLL(s, _DetailAlbedoMap);
+    #else
+        float2 detailUv = A_TEX_TRANSFORM_UV_SCROLL(s, _DetailNormalMap);
+    #endif
+    
+    #ifndef A_DETAIL_COLOR_MAP_OFF
+        half3 detailAlbedo = tex2D(_DetailAlbedoMap, detailUv).rgb;
+        half3 colorScale = _DetailMode < 0.5f ? A_WHITE : unity_ColorSpaceDouble.rgb;
+        
+        s.baseColor *= aLerpWhiteTo(detailAlbedo * colorScale, mask);
+    #endif
+
+    #ifndef A_DETAIL_NORMAL_MAP_OFF
+        half3 detailNormalTangent = UnpackScaleNormal(tex2D(_DetailNormalMap, detailUv), mask * _DetailNormalMapScale);
+        s.normalTangent = A_NT(s, BlendNormals(s.normalTangent, detailNormalTangent));
+    #endif
+#endif
+} 
+
+#endif // ALLOY_SHADERS_FEATURE_DETAIL_CGINC