When cmgen creates ktx files, it creates a pair: one with an _ibl suffix
and one with _skybox. This convention is now honored by FilamentApp.
Note that we already have several KTX environments in the repo, so you
can clone a fresh repo and do:
gltf_viewer --ibl={FILAMENT}/docs/webgl/pillars_2k DamagedHelmet.gltf
Note that we have several hundred files in samples/envs, we should
consider replacing those or copying the environments in docs/webgl
(which git would internally de-dup, due to content hashing).
(1)
Generating the C file (only used for WebAssembly) causes slowness in the
build so this makes it into an option. Also, we were flushing too often,
which made it even slower.
(2)
Using "static" in a header was causing symbol duplication.
build.sh -p all builds everything which may be too much. -p now
accepts a list of platforms. For instance to build Android and
desktop:
./build.sh -p android,desktop release
View::setRenderQuality gives the ability to control the rendering quality
of a given view. In particular this allows the app to lower the quality
of the HDR color buffer by using R11G11B10F instead of RGB(A)16F.
This shows how resgen can be used for mesh data. It also removes the
MeshAssimp dependency from samples that were meant to be small and
self-contained.
This adds a couple optional features:
1) Preserve file extensions when generating symbols.
This is useful to distinguish foo.vs from foo.fs
2) Append null characters to data blobs.
Useful when treating FOO_DATA as a C string.
We started to write our own implementation of mikktspace, but it
required an unindexed mesh for input. This was awkward because assimp is
already applying a pipeline of operations that includes tangent
generation and indexing. It felt reduandant to add our own pipeline on
top of that (unindexing => tangentgen => reindexing).
Since assimp's CalcTangentsProcess method is already producing
tangents that follow the orientation implied by texture coordinates,
this simply needs to be tweaked to match glTF. (flip the bitangent)
Also fixed a bug for the case where models have neither UV's nor
tangents, where we were calling norm instead of normalize. :)
An assert checking invariants would sometime trigger, the problem
was a logic error that would be exposed by a race when running out
of space in the list.
The root of the problem is that in one place we were not remapping the
-1 offset to nullptr, storing a pointer violating our invariants.
Also added more asserts!!!
