add glitter uv channel

1 files changed, 3 insertions, 1 deletions

diff --git a/glitter.cginc b/glitter.cginc
index a8e6aad..e8df133 100644
--- a/glitter.cginc
+++ b/glitter.cginc
@@ -7,6 +7,7 @@
 

 struct GlitterParams {

     float4 color;

+    float2 uv_channel;

     uint layers;

     float cell_size;

     float size;

@@ -38,7 +39,8 @@ float4 getGlitter(v2f i, GlitterParams params, float3 normal) {
   float c_acc = 0;

   [loop]

   for (uint layer_i = 0; layer_i < params.layers; layer_i++) {

-    float2 p = i.uv01.xy + glitter_offset_vectors[layer_i] * params.cell_size * 0.5;

+    float2 uv = get_uv_by_channel(i, params.uv_channel);

+    float2 p = uv + glitter_offset_vectors[layer_i] * params.cell_size * 0.5;

 

     float3 cell_id = float3(floor(p / params.cell_size), layer_i);

     float cell_rand = rand3(cell_id*.0001);