forked from BilalY/Rasagar
47 lines
1.5 KiB
HLSL
47 lines
1.5 KiB
HLSL
|
#include "Packages/com.unity.rendering.light-transport/Runtime/UnifiedRayTracing/FetchGeometry.hlsl"
|
||
|
|
#include "Packages/com.unity.rendering.light-transport/Runtime/UnifiedRayTracing/TraceRay.hlsl"
|
||
|
|
|
||
|
|
UNIFIED_RT_DECLARE_ACCEL_STRUCT(_AccelStruct);
|
||
|
|
|
||
|
|
struct RayWithFlags
|
||
|
|
{
|
||
|
|
float3 origin;
|
||
|
|
float tMin;
|
||
|
|
float3 direction;
|
||
|
|
float tMax;
|
||
|
|
uint culling;
|
||
|
|
uint instanceMask;
|
||
|
|
uint padding;
|
||
|
|
uint padding2;
|
||
|
|
};
|
||
|
|
|
||
|
|
StructuredBuffer<RayWithFlags> _Rays;
|
||
|
|
RWStructuredBuffer<UnifiedRT::Hit> _Hits;
|
||
|
|
RWStructuredBuffer<UnifiedRT::HitGeomAttributes> _HitAttributes;
|
||
|
|
|
||
|
|
void RayGenExecute(UnifiedRT::DispatchInfo dispatchInfo)
|
||
|
|
{
|
||
|
|
|
||
|
|
RayWithFlags rayWithFlags = _Rays[dispatchInfo.globalThreadIndex];
|
||
|
|
UnifiedRT::Ray ray;
|
||
|
|
ray.origin = rayWithFlags.origin;
|
||
|
|
ray.direction = rayWithFlags.direction;
|
||
|
|
ray.tMin = rayWithFlags.tMin;
|
||
|
|
ray.tMax = rayWithFlags.tMax;
|
||
|
|
|
||
|
|
UnifiedRT::RayTracingAccelStruct accelStruct = UNIFIED_RT_GET_ACCEL_STRUCT(_AccelStruct);
|
||
|
|
UnifiedRT::Hit hitResult = UnifiedRT::TraceRayClosestHit(dispatchInfo, accelStruct, rayWithFlags.instanceMask, ray, rayWithFlags.culling);
|
||
|
|
if (hitResult.IsValid())
|
||
|
|
{
|
||
|
|
UnifiedRT::HitGeomAttributes hitAttribs = UnifiedRT::FetchHitGeomAttributes(hitResult);
|
||
|
|
_HitAttributes[dispatchInfo.globalThreadIndex] = hitAttribs;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
_HitAttributes[dispatchInfo.globalThreadIndex] = (UnifiedRT::HitGeomAttributes)0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
_Hits[dispatchInfo.globalThreadIndex] = hitResult;
|
||
|
|
}
|