Work in Progress. Forked from cerastes
The gltf -> hmd conversion has been signficantly rewritten. The new
implementation is in GltfToHmd.hx and GltfData.hx replacing the old
versions in Data.hx, Parser.hx, and HMDOut.hx.
V2 was primarily created to clean up the code and avoid intermediate steps between gltf parsing and hmd output. It is also a bit faster than v1.
- in gltf files without tangents, v2 is ~41% faster than v1.
- in gltf files with embedded tangents (no need to run mikkt) v2 is ~18% faster.
- ~65% of time is spent running mikktspace when needed
- ~13% of time is spent reading input files
- take these numbers with a grain of salt, the benchmarking is not thorough yet.
Add -D heaps_gltf_use_v2 to your hxml to use V2.
Simply include these two lines in your hxml:
-lib heaps-gltf
--macro hxd.fmt.gltf.Macros.build()
--macro addMetadata('@:build(hxd.fmt.gltf.Macros.patchModelCache())', 'h3d.prim.ModelCache')
The second macro is only needed for some gltf files:
Gltf allows embedding materials simply as colors, which is not supported by HMD. So, there's some gross patching of heaps going on here. See Macros.hx.
If you want prefer to completely ignore these materials, then add
-D heaps_gltf_disable_material_color to your hxml. This will prevent the
glTF to HMD conversion from outputting the materials. You will also need to
clear the resource cache for any gltf files embedding these materials.
haxe sample.hxml && hl build/sample.hl
Avocado.gltf and other example resources are public domain assets from glTF-Sample-Models.