public struct VirtualShadowLevelOne virtual map: a projection, where its pages start, and how coarse its texels are.
No guide page documents this yet — the page shows what the code says about itself.
Remarks
A clipmap level and a spot light are the same record, which is what keeps the page table, the marking pass and the lookup from having two of everything. What differs is how a pixel chooses one — a clipmap level is chosen by comparing texel sizes, a spot's only level is chosen by being inside its frustum — and that is one branch in one function rather than a second address space.
Sixteen-byte rows on both sides, as every record a shader reads is. The matrix is first because it is the only member with an alignment worth arranging around.
Fields and properties (7)
public Matrix4x4 ViewProjectionWorld to this map's clip space.
public uint FirstWhere this map's pages start in the global page numbering.
public uint KindVirtualShadowKind, as the shader reads it.
public float TexelWorldSizeHow many world units one of this map's shadow texels covers. Zero for a spot.
public uint LightWhich light this map belongs to, for a host that wants to attribute a page.
public Int2 OriginWhere this map's page grid sits in the light's own endless page grid.
public Int2 PaddingEight bytes of tail padding the shader declares and never reads.
Used by (6)
- ArrangementVixen.Graphics.Golden.Tests
- VirtualShadowAtlasVixen.Rendering
- VirtualShadowLookupDeviceTestsVixen.Graphics.Golden.Tests
- VirtualShadowMapTestsVixen.Rendering.Tests
- VirtualShadowRendererVixen.Rendering
- VirtualShadowRendererTestsVixen.Rendering.Tests