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| -rw-r--r-- | instancing.cginc | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/instancing.cginc b/instancing.cginc new file mode 100644 index 0000000..eb8e25b --- /dev/null +++ b/instancing.cginc @@ -0,0 +1,22 @@ +#ifndef __INSTANCING_INC +#define __INSTANCING_INC + +#include "globals.cginc" +#include "interpolators.cginc" + +void instance_distance_culling(inout v2f i) { +#if defined(_INSTANCE_DISTANCE_CULLING) + // We want to measure the distance from the instance's transform to the camera. + float3 instance_pos = mul(unity_ObjectToWorld, float4(0, 0, 0, 1)).xyz; + float distance = length(_WorldSpaceCameraPos - instance_pos); + if (distance > _Instance_Distance_Culling_Distance) { + discard; + } +#endif // _INSTANCE_DISTANCE_CULLING +} + +void instancing_frag(v2f i) { + instance_distance_culling(i); +} + +#endif // __INSTANCING_INC |