Custom material attributes are enforced to start with a lowercase
letter, so I think it makes sense to be consistent and use the same for
custom scene fields and mesh attributes as well. It's not enforced in
any way but the tests should reflect that choice so new code that gets
written based on these inherits that practice.
Originally I thought I'd save plugins some time if I just give them the
custom indices directly, without being wrapped in a SceneField /
MeshAttribute enum. But in practice that didn't really save anything,
made the interfaces more error-prone due to there being no concrete type
anymore, and all code that delegates to nested importers or converters
had to re-wrap the IDs again, which is *again* error-prone.
Bumping the interface strings because this is a breaking change for the
implementations. Not for users tho, there nothing changes.
In some cases it's needed to release (or copy) the data first and
only then access the field properties through the SceneData to
(optionally) re-route the field views to a new data location. But since
releaseData() was implicitly erasing field data as well, this wasn't
possible and the only other option was to release the field data first
and then access them through the low-level SceneFieldData API with all
convenience lost.
This makes the release*Data() APIs a bit dangerous to use, but that
should be fine -- those aren't meant to be used by regular code anyway.
Similar caveat is with MaterialData already.
Especially the part about non-owned data was lacking, with basically no
information about what are offset-only attributes and fields actually
good for.
Instead of saying "which is not supported" in each assert, which is
vague and might imply that "it eventually will be supported", document
the actual reason in a single place, which is the MeshAttributeData docs.
It looked like it was last touched in 2012. Not great. Also, with this I
can finally stop explaining the four-byte-aligned-row defaults to people
and can just point them to docs.
Useful for creating pixel formats with different channel count,
adding/removing the sRGB bit and such. Counterpart to
vertexFormat(VertexFormat, UnsignedInt, bool) that got added back in
2020.06 already.
Doing so usually points to some error in user code, so directly disallow
it, instead of returning false. Such behavior is consistent with
pixelFormatChannelCount() and other helper APIs.
The perf cost is just too great for these to be enabled always. The only
place where the assertions are kept always is in the batch APIs -- there
it's assumed the function is called on large enough data to offset this
overhead, plus since it's often dealing with large blocks of data the
memory safety is more important than various FP drifts which were the
usual case why other assertions were firing.
The assertion message printed being/end range, which was extremely
uninformative as it didn't show sizes and strides. That form made sense
for reporting if the views weren't contained in the data arrays, but not
here.
Additionally, the existing assertion didn't check stride, which means
that a mapping with 2 items and stride 8 was treated as being equal to a
mapping with 4 items and stride 4. On the other hand, it didn't behave
correctly for offset-only fields, those were always treated as different
from pointer fields even if they were actually matching.
A counterpart / inverse to Verbose, is meant to be used by plugins to
suppress all warnings.
This flag was already used by the ShaderConverter APIs. Fonts don't have
any flags (and don't have any verbose output or warnings at the moment
either), so there it isn't added; audio importers are in a maintenance
mode with no new features added as I'll be eventually merging them with
the general importer interface in Trade.
I was abusing the API and passing a negative pitch there to not have to
invert the image by hand. It stopped working in 2.23 when they hardened
the argument checking and, while working correctly, this feature was
accidental and undocumented.
Unfortunately it broke silently, because the API returned nullptr and
SDL_SetWindowIcon(..., nullptr) is then resetting an icon to nothing. So
I'm adding an internal assertion there now. Hopefully it doesn't start
blowing up for some reason again, heh.
For more robust handling of non-owning *Data instanced and refcounting
in Python bindings I need to differentiate between, say, a MeshData
referencing global memory (such as Primitives::cubeSolid()) and MeshData
referencing just some temporary allocation or another MeshData (such as
the output of MeshTools::filterOnlyAttributes()).
It compiles on GLES2 as well, but there it hits the massive PITA of
being unable to render to LUMINANXCE formats and GL_RED formats not
really being available everywhere.
I don't have the patience to fix that, and almost nobody needs to use
ES2 platforms nowadays, so this isn't really a priority.
So one can directly read it back on GLES without having to wrap the
texture in a framebuffer again.
This change also puts the framebuffer completeness check *before* the
clear() and bind() which makes it no longer emit a GL error. The error
is still silent though, which isn't nice. Gotta fix that eventually as
well.
The UBO definitons are not tied to GL in any way, so they should be
available always. MeshTools::generateLine() now is as well, and this
made the tests fail to link on ES2 builds due to the debug operator not
being present.
This is unfortunately a breaking change to compileLines(), which now
takes the output of generateLines() instead of a line mesh. There's a
new assertion that'll blow up if the code is used the previous way,
sorry for the breakage.
What's however very useful about this change is that now it's possible
to take those generated line meshes and concatenate() them together,
achieving what's otherwise not implemented yet, such as drawing several
disconnected line strips or loops together.
It's all still partially private (the custom mesh attribute names are)
and I'm marking both APIs as experimental now to hint that it's not in
the final form/functionality yet. In particular, the data layout
optimizations described in the shader docs aren't used by these tools
yet, and if/once the line-specific vertex attributes become builtin,
compileLines() will not need to exist anymore as compile() will handle
that directly.
Vladimír Vondruš