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Add better debug view for Global SDF to include surface hit normal

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Wojtek Figat
2025-11-04 13:27:47 +01:00
parent 85b134b7be
commit 387c3ea2f4
1 changed files with 8 additions and 2 deletions
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10
Source/Shaders/GlobalSignDistanceField.shader
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@@ -311,6 +311,7 @@ float4 PS_Debug(Quad_VS2PS input) : SV_Target
float3 viewRay = lerp(lerp(ViewFrustumWorldRays[3], ViewFrustumWorldRays[0], input.TexCoord.x), lerp(ViewFrustumWorldRays[2], ViewFrustumWorldRays[1], input.TexCoord.x), 1 - input.TexCoord.y).xyz; float3 viewRay = lerp(lerp(ViewFrustumWorldRays[3], ViewFrustumWorldRays[0], input.TexCoord.x), lerp(ViewFrustumWorldRays[2], ViewFrustumWorldRays[1], input.TexCoord.x), 1 - input.TexCoord.y).xyz;
viewRay = normalize(viewRay - ViewWorldPos); viewRay = normalize(viewRay - ViewWorldPos);
trace.Init(ViewWorldPos, viewRay, ViewNearPlane, ViewFarPlane); trace.Init(ViewWorldPos, viewRay, ViewNearPlane, ViewFarPlane);
trace.NeedsHitNormal = true;
GlobalSDFHit hit = RayTraceGlobalSDF(GlobalSDF, GlobalSDFTex, GlobalSDFMip, trace); GlobalSDFHit hit = RayTraceGlobalSDF(GlobalSDF, GlobalSDFTex, GlobalSDFMip, trace);
// Debug draw // Debug draw
@@ -321,9 +322,14 @@ float4 PS_Debug(Quad_VS2PS input) : SV_Target
else else
{ {
// Debug draw SDF normals // Debug draw SDF normals
float dst; color.rgb = normalize(hit.HitNormal) * 0.5f + 0.5f;
color.rgb = normalize(SampleGlobalSDFGradient(GlobalSDF, GlobalSDFTex, hit.GetHitPosition(trace), dst)) * 0.5f + 0.5f;
} }
#elif 1
else
{
// Composite with SDF normals
color.rgb *= saturate(normalize(hit.HitNormal) * 0.5f + 0.7f) + 0.1f;
}
#endif #endif
return float4(color, 1); return float4(color, 1);
} }