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Refactor OrientedBoundingBox to use Transform for transformation instead of Matrix (for large worlds)

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This commit is contained in:
Wojtek Figat
2022-06-16 10:51:59 +02:00
parent 995e5bc6ff
commit 9ba117cde3
16 changed files with 168 additions and 780 deletions
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14
Source/Engine/Renderer/GI/GlobalSurfaceAtlasPass.cpp
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@@ -1074,8 +1074,10 @@ void GlobalSurfaceAtlasPass::RasterizeActor(Actor* actor, void* actorObject, con
}
// Write to objects buffer (this must match unpacking logic in HLSL)
Matrix localToWorldBounds;
object->Bounds.Transformation.GetWorld(localToWorldBounds);
Matrix worldToLocalBounds;
Matrix::Invert(object->Bounds.Transformation, worldToLocalBounds);
Matrix::Invert(localToWorldBounds, worldToLocalBounds);
uint32 objectAddress = _objectsBuffer->Data.Count() / sizeof(Float4);
auto* objectData = _objectsBuffer->WriteReserve<Float4>(GLOBAL_SURFACE_ATLAS_OBJECT_DATA_STRIDE);
objectData[0] = *(Float4*)&actorObjectBounds;
@@ -1103,13 +1105,13 @@ void GlobalSurfaceAtlasPass::RasterizeActor(Actor* actor, void* actorObject, con
yAxis = tileIndex == 2 || tileIndex == 3 ? Float3::Right : Float3::Up;
Float3::Cross(yAxis, zAxis, xAxis);
Float3 localSpaceOffset = -zAxis * object->Bounds.Extents;
Float3::TransformNormal(xAxis, object->Bounds.Transformation, xAxis);
Float3::TransformNormal(yAxis, object->Bounds.Transformation, yAxis);
Float3::TransformNormal(zAxis, object->Bounds.Transformation, zAxis);
xAxis = object->Bounds.Transformation.LocalToWorldVector(xAxis);
yAxis = object->Bounds.Transformation.LocalToWorldVector(yAxis);
zAxis = object->Bounds.Transformation.LocalToWorldVector(zAxis);
xAxis.NormalizeFast();
yAxis.NormalizeFast();
zAxis.NormalizeFast();
Float3::Transform(localSpaceOffset, object->Bounds.Transformation, tile->ViewPosition);
object->Bounds.Transformation.LocalToWorld(localSpaceOffset, tile->ViewPosition);
tile->ViewDirection = zAxis;
// Create view matrix
@@ -1122,7 +1124,7 @@ void GlobalSurfaceAtlasPass::RasterizeActor(Actor* actor, void* actorObject, con
OrientedBoundingBox viewBounds(object->Bounds);
viewBounds.Transform(tile->ViewMatrix);
Float3 viewExtent;
Float3::TransformNormal(viewBounds.Extents, viewBounds.Transformation, viewExtent);
viewExtent = viewBounds.Transformation.LocalToWorldVector(viewBounds.Extents);
tile->ViewBoundsSize = viewExtent.GetAbsolute() * 2.0f;
// Per-tile data