KSG-Framework/Common.hlsl

// Hit information, aka ray payload
// This sample only carries a shading color and hit distance.
// Note that the payload should be kept as small as possible,
// and that its size must be declared in the corresponding
// D3D12_RAYTRACING_SHADER_CONFIG pipeline subobjet.

#pragma pack_matrix(row_major)
#define MAX_TRANSPACENT_HITS 5

struct [raypayload] HitInfo
{
    float4 color[MAX_TRANSPACENT_HITS] : write(caller, closesthit, anyhit, miss) : read(caller, anyhit, closesthit, miss);
float distance[MAX_TRANSPACENT_HITS] : write(caller, closesthit, anyhit) : read(caller, anyhit, closesthit);
uint hitCount : write(caller, anyhit, closesthit, miss) : read(caller, anyhit, closesthit, miss);
};

// Attributes output by the raytracing when hitting a surface,
// here the barycentric coordinates
struct Attributes
{
    float2 bary;
};

// global root signature resources
Texture2D<float4> textures[] : register(t0, space1);
SamplerState gSampler : register(s0, space0);

// Raytracing output texture, accessed as a UAV
RWTexture2D<float4> gOutput : register(u0);

RWTexture2D<float4> guiTexture : register(u1);

// Raytracing acceleration structure, accessed as a SRV
RaytracingAccelerationStructure TLAS : register(t0, space0);

cbuffer RayGenerationSettings : register(b0)
{
    int renderGui;
    int useRays;
    float minDistance;
    float maxDistance;
    float4x4 inverseView;
    float4x4 inverseProjection;
}