Currently, the first time a raycast is attempted for a model, the raycast will fail and the model's kdtree will asynchronously get built. This breaks the vegetation system, which expects the queries to always work. This adds in a brute-force fallback for use while the kdtree is building. However, other use cases like the Editor mouse cursor selection raycast still should get the current "silent failure" behavior, because otherwise the Editor will lock up for several seconds the first time the mouse moves over an extremely complex model.
* Enable 16 byte alignment for root constants
* Switching to R8G8B8A8_UINT for dummy stream buffers
* Clamping min values for scissor/viewport for fullscreen pass
* Extend MeshFeatureProcessor to allow changing the mesh bbox, which requires re-compute the culling data for that mesh
* Update actor mesh bbox when EMFX actor instance bbox changes.
Also use the actor instance global bbox to compute the local bbox for the skinned render mesh, instead of the using the static bounds based bbox, as not every actor instance is going to be using the static bounds bbox.
* Store per-instance mesh AABB in the right place.
In the MeshInstanceData, which is unique per instance, instead of in the Model, which is shared between all instances.
For greater clarity, also remove Model::m_aabb and the corresponding getter and setter, as it isn't immediately obvious whether this gets the model asset bbox or the mesh instance bbox. Callers should instead be explicit about which bbox they want.
* Bug fix: model asset is not necessarily ready in AcquireMesh
* Remove now-unused forward declaration
* Update MockMeshFeatureProcessor with SetLocalAabb/GetLocalAabb
* ensure brute force ray intersection works in the same space as kd-tree intersection
* add additional tests for ray casts against meshes using brute force approach
* update api and add some additional test cases
* comment tidy-up and other small updates/fixes for ray intersection code
* fix issue with values at the end of a ray
* updates to kd-tree ray intersection
* update tests for kd-tree
* add one more test for kd-tree intersection
* updates to ModelKdTree following review feedback
* improve api doc comment for RayIntersection in ModelKdTree
* updates following review feedback
* update .clang-format to stack parameters if they do not all fit on one line
Gene Walters
Mike Balfour
moudgils
Steve Pham
yuriy0
Tom Hulton-Harrop
jiaweig
greerdv
alexpete