More decal features

1 files changed, 2 insertions, 2 deletions

diff --git a/math.cginc b/math.cginc
index 5becd0e..9d95588 100755
--- a/math.cginc
+++ b/math.cginc
@@ -105,8 +105,8 @@ float luminance(float3 rgb) {
   return dot(float3(0.2126, 0.7152, 0.0722), rgb);
 }
 
-float4 alpha_blend(float4 src, float4 dst) {
-  return float4(src.rgb * src.a + dst.rgb * (1 - src.a), src.a + dst.a * (1 - src.a));
+float4 alpha_blend(float4 front, float4 back) {
+  return float4(front.rgb * front.a + back.rgb * (1 - front.a), front.a + back.a * (1 - front.a));
 }
 
 #endif  // __MATH_INC