begin scaling sdf ssn by alpha blend amount

1 files changed, 8 insertions, 6 deletions

diff --git a/decals.cginc b/decals.cginc
index bb4a0bd..1fb2e7d 100644
--- a/decals.cginc
+++ b/decals.cginc
@@ -207,6 +207,14 @@ float3 calculateSdfSsn(DecalParams params, float2 decal_uv, float4 decal_albedo)
         decal_albedo *= params.color;                                                               \

     }

 

+#define APPLY_DECAL_SDF_SSN_ON(i, albedo, normal_tangent, metallic, smoothness, emission, params) \

+    { \

+        float3 sdf_normal_ts = calculateSdfSsn(params, decal_uv, decal_albedo); \

+        sdf_normal_ts.xy *= 1.0f - albedo.a; \

+        sdf_normal_ts = normalize(sdf_normal_ts); \

+        normal_tangent = blendNormalsHill12(normal_tangent, sdf_normal_ts); \

+    }

+

 #define APPLY_DECAL_CLAMP_ON(i, albedo, normal_tangent, metallic, smoothness, emission, params)         \

     {                                                                                               \

         float eps = 1e-4;                                                                           \

@@ -261,12 +269,6 @@ float3 calculateSdfSsn(DecalParams params, float2 decal_uv, float4 decal_albedo)
 

 #define APPLY_DECAL_REFLECTIONS_OFF(i, albedo, normal_tangent, metallic, smoothness, emission, params) {}

 

-#define APPLY_DECAL_SDF_SSN_ON(i, albedo, normal_tangent, metallic, smoothness, emission, params) \

-    { \

-        float3 sdf_normal_ts = calculateSdfSsn(params, decal_uv, decal_albedo); \

-        normal_tangent = blendNormalsHill12(normal_tangent, sdf_normal_ts); \

-    }

-

 #define APPLY_DECAL_SDF_SSN_OFF(i, albedo, normal_tangent, metallic, smoothness, emission, params) {}

 

 void applyDecals(in v2f i, inout float4 albedo, inout float3 normal_tangent, inout float metallic, inout float smoothness, inout float3 emission) {