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Seele/res/shaders/raytracing/RayGen.slang
T
2024-07-10 21:07:10 +02:00

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import Common;
import RayTracingData;
[shader("raygeneration")]
void main()
{
const float2 pixelCenter = float2(DispatchRaysIndex().xy) + float2(0.5);
const float2 inUV = pixelCenter / float2(DispatchRaysDimensions().xy);
float2 d = inUV * 2.0 - 1.0;
float4 origin = mul(pViewParams.inverseViewMatrix, float4(0, 0, 0, 1));
float4 target = mul(pViewParams.inverseProjection, float4(d.x, d.y, 1, 1));
float4 direction = mul(pViewParams.inverseViewMatrix, float4(normalize(target.xyz), 0));
float tmin = 0.0001;
float tmax = 10000.0;
uint max_rays = 24;
float4 color = float4(0, 0, 0, 0);
float expectedDistance = -1;
float3 payload;
RayDesc desc = {
origin.xyz,
tmin,
direction.xyz,
tmax,
};
TraceRay(pRayTracingParams.scene, RAY_FLAG_FORCE_OPAQUE, 0xff, 0, 0, 0, desc, payload);
pRayTracingParams.image[DispatchRaysIndex().xy] = float4(payload, 1.0f);
}