QueriedHit

Remarks

⚠ The last two are what RayQueryField.rvn throws away one line after the intrinsic answers them, and this is the reference half of #1169. A hardware Trace answers (t, primitive, instance, hit); the shader keeps t, builds a DistanceFieldHit that has nowhere to put the rest, and every consumer then asks GradientField(hit.position) — a position, which names no triangle. So the honest answer there is the up vector, and SurfaceRadiance(position, normal) picks a card by normal: a constant upward answer picks every horizontal card in the atlas whatever the surface is, which reads as the surface cache being wrong rather than as a normal bug.

⚠ And the CPU half turned out to be smaller than #1169 describes. The issue says "the CPU pair can compute the geometric normal from the same triangle the BVH committed"; Trace already computes it, already faces it at the ray, and already returns the triangle index beside it — QueriedField was discarding both while constructing this. Nothing was computed here; two fields were carried.

Both, rather than only the normal the consumers want. The index is the mechanism the device half has to use — a shader has no cross product to fall back on and must read the vertex buffer the structure was built from — so a referee that carries only the answer cannot referee the step that produces it.

Fields and properties (6)

• public bool Hit

  Whether the query committed a triangle.

• public float Distance

  How far along the ray it stands, or the budget for a miss.

• public Vector3 Position

  Where — on the triangle, or at the budget's end.

• public int Steps

  One. A query is one step, and the field's tracers report their cost, so this reports its.

• public Vector3 Normal

  The committed triangle's geometric normal, facing the ray, or the up vector for a miss.

• public int Primitive

  Which triangle the query committed, as an index into the build's list, or −1 for a miss.

Methods (1)

• public QueriedHit(bool Hit, float Distance, Vector3 Position, int Steps, Vector3 Normal, int Primitive)

  One answer of a QueriedField trace — DistanceFieldHit, by shape.

Used by (3)

• AccelerationStructureDeviceTestsVixen.Graphics.Golden.Tests
• QueriedFieldVixen.Rendering.RayTracing
• QueriedFieldTestsVixen.Rendering.RayTracing.Tests