The VBO renderer needs to generate a buffer with two quads for each
cell, and then transfer it to the GPU. For large monitors, generating
this buffer can get quite slow. Most of the issues come from
IVertexBuilder (VertexConsumer under MojMap) having a lot of overhead.
By emitting a ByteBuffer directly (and doing so with Unsafe to avoid
bounds checks), we can improve performance 10 fold, going from
3fps/300ms for 120 monitors to 111fps/9ms.
See 41fa95bce4 and #1065 for some more
context and other exploratory work. The key thing to note is we _need_ a
separate version of FWFR for emitting to a ByteBuffer, as introducing
polymorphism to it comes with a significant performance hit.
- Move all RenderType instances into a common class.
Cherry-picked from 41fa95bce4408239bc59e032bfa9fdc7418bcb19:
- Render GL_QUADS instead of GL_TRIANGLES.
- Remove any "immediate mode" methods from FWFR. Most use-cases can be
replaced with the global MultiBufferSource and a proper RenderType
(which we weren't using correctly before!).
Only the GUI code (WidgetTerminal) needs to use the immediate mode.
- Pre-convert palette colours to bytes, storing both the coloured and
greyscale versions as a byte array.
Cherry-picked from 3eb601e55402536d752720e9474ab4ecb27d2f5f:
- Pass lightmap variables around the various renderers. Fixes#919 for
1.16!
"Instead, it is a standard program, which its API into the programs that it launches."
becomes
"Instead, it is a standard program, which injects its API into the programs that it launches."
A little shorter and more explicit than constructing the Vector3d
manually. Fixes an issue where sounds were centered on the bottom left
of speakers, not the middle (see cc-tweaked/cc-restitched#85).
See #1061, closes#1064.
Nobody ever seems to implement this correctly (though it's better than
1.12, at least we've not seen any crashes), and this isn't a fight I
care enough about fighting any more.
- Remove the POSITION_COLOR render type. Instead we just render a
background terminal quad as the pocket computer light - it's a little
(lot?) more cheaty, but saves having to create a render type.
- Use the existing position_color_tex shader instead of our copy. I
looked at using RenderType.text, but had a bunch of problems with GUI
terminals. Its possible we can fix it, but didn't want to spend too
much time on it.
- Remove some methods from FixedWidthFontRenderer, inlining them into
the call site.
- Switch back to using GL_QUADS rather than GL_TRIANGLES. I know Lig
will shout at me for this, but the rest of MC uses QUADS, so I don't
think best practice really matters here.
- Fix the TBO backend monitor not rendering monitors with fog.
Unfortunately we can't easily do this to the VBO one without writing
a custom shader (which defeats the whole point of the VBO backend!),
as the distance calculation of most render types expect an
already-transformed position (camera-relative I think!) while we pass
a world-relative one.
- When rendering to a VBO we push vertices to a ByteBuffer directly,
rather than going through MC's VertexConsumer system. This removes
the overhead which comes with VertexConsumer, significantly improving
performance.
- Pre-convert palette colours to bytes, storing both the coloured and
greyscale versions as a byte array. This allows us to remove the
multiple casts and conversions (double -> float -> (greyscale) ->
byte), offering noticeable performance improvements (multiple ms per
frame).
We're using a byte[] here rather than a record of three bytes as
notionally it provides better performance when writing to a
ByteBuffer directly compared to calling .put() four times. [^1]
- Memorize getRenderBoundingBox. This was taking about 5% of the total
time on the render thread[^2], so worth doing.
I don't actually think the allocation is the heavy thing here -
VisualVM says it's toWorldPos being slow. I'm not sure why - possibly
just all the block property lookups? [^2]
Note that none of these changes improve compatibility with Optifine.
Right now there's some serious issues where monitors are writing _over_
blocks in front of them. To fix this, we probably need to remove the
depth blocker and just render characters with a z offset. Will do that
in a separate commit, as I need to evaluate how well that change will
work first.
The main advantage of this commit is the improved performance. In my
stress test with 120 monitors updating every tick, I'm getting 10-20fps
[^3] (still much worse than TBOs, which manages a solid 60-100).
In practice, we'll actually be much better than this. Our network
bandwidth limits means only 40 change in a single tick - and so FPS is
much more reasonable (+60fps).
[^1]: In general, put(byte[]) is faster than put(byte) multiple times.
Just not clear if this is true when dealing with a small (and loop
unrolled) number of bytes.
[^2]: To be clear, this is with 120 monitors and no other block entities
with custom renderers. so not really representative.
[^3]: I wish I could provide a narrower range, but it varies so much
between me restarting the game. Makes it impossible to benchmark
anything!
Forge 4.0.18 deprecated a lot of methods and moved where
RegistryEvent.NewRegistry lives, so we needed to update. This does break
the CC API a little bit (sorry!) though given Forge 1.18.2 is still in
flux, that's probably inevitable.
There's a couple of alternative ways to solve this. Ideally we'd send
our network messages at the same time as MC does
(ChunkManager.playerLoadedChunk), but this'd require a mixin.
Instead we just rely on the fact that if the chunk isn't loaded,
monitors won't have done anything and so we don't need to send their
contents!
Fixes#1047, probably doesn't cause any regressions. I've not seen any
issues on 1.16, but I also hadn't before so ¯\_(ツ)_/¯.
It's now impossible to run the client tests (tests are still there, but
none of the other infrastructure is). We've not run these for months now
due to their severe flakiness :(.
This was added in the 1.13 update and I'm still not sure why. Other mods
seem to get away without it, so I think it's fine to remove.
Also remove the fake net manager, as that's part of Forge nowadays.
Fixes#1044.
- Fixes#1026
- The remaining bytes counter wasn't being decremented, so the code that
splits off smaller packets was unreachable. Thus all file slices were
being put into a single UploadFileMessage packet.
- Fix UpgradeSpeakerPeripheral not calling super.detach (so old
computers were never cleaned up)
- Correctly lock computer accesses inside SpeakerPeripheral
Fixes#1003.
Fingers crossed this is the last bug. Then I can bump the year and push
a new release tomorrow.
