mirror of
https://github.com/open-goal/jak-project
synced 2026-05-25 23:35:33 -04:00
Tyler Wilding
70 lines
2.5 KiB
Common Lisp
Vendored
Generated
70 lines
2.5 KiB
Common Lisp
Vendored
Generated
;;-*-Lisp-*-
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(in-package goal)
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;; definition of type draw-node
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(deftype draw-node (drawable)
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"Node in a bounding volume heirarchy. This is a base class, and there are no children.
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The child is a pointer to the start of inline array of drawables (note: not a drawable-inline-array, literally a bunch of plain drawables)
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The size of this array is child-count. The type is either more draw-nodes, or, some other drawable like tfragment, depending on the flags.
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Different renderers have different restrictions on the tree structure, like max child count, or if all children have the same depth.
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Generally, tfrag/collide use a very rigid equal depth, max 8 children rule, but with shrub, anything goes.
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This is a very awkward data structure to traverse, but it is designed for fast view frustum culling.
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Note that there can be multiple ways to reach drawables in here in some cases - for example you can follow
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this tree, or check one of the depth arrays found in tfrag.
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"
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((child-count uint8 :offset 6)
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(flags uint8 :offset 7)
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(child drawable :offset 8)
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(distance float :offset 12)
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)
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)
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;; definition for method 3 of type draw-node
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(defmethod inspect ((this draw-node))
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(when (not this)
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(set! this this)
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(goto cfg-4)
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)
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(format #t "[~8x] ~A~%" this (-> this type))
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(format #t "~1Tid: ~D~%" (-> this id))
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(format #t "~1Tbsphere: ~`vector`P~%" (-> this bsphere))
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(format #t "~1Tchild-count: ~D~%" (-> this child-count))
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(format #t "~1Tflags: ~D~%" (-> this flags))
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(format #t "~1Tchild: #x~X~%" (-> this child))
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(format #t "~1Tdistance: #x~X~%" (-> this distance))
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(label cfg-4)
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this
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)
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;; definition of type drawable-inline-array-node
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(deftype drawable-inline-array-node (drawable-inline-array)
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((data draw-node 1 :inline)
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(pad uint32)
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)
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)
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;; definition of type draw-node-dma
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(deftype draw-node-dma (structure)
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"DMA buffer layout for draw node culling routine, which copies draw-nodes directly to scratchpad in bulk.
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This would not work with the memory layout of shrub."
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((banka draw-node 32 :inline)
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(bankb draw-node 32 :inline)
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)
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)
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;; definition for method 3 of type draw-node-dma
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(defmethod inspect ((this draw-node-dma))
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(when (not this)
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(set! this this)
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(goto cfg-4)
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)
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(format #t "[~8x] ~A~%" this 'draw-node-dma)
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(format #t "~1Tbanka[32] @ #x~X~%" (-> this banka))
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(format #t "~1Tbankb[32] @ #x~X~%" (-> this bankb))
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(label cfg-4)
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this
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)
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;; failed to figure out what this is:
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0
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