2020-04-25 00:46:54 +00:00
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[package]
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name = "bevy_pbr"
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2024-07-08 12:54:08 +00:00
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version = "0.15.0-dev"
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2021-10-27 00:12:14 +00:00
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edition = "2021"
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2020-08-10 00:24:27 +00:00
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description = "Adds PBR rendering to Bevy Engine"
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homepage = "https://bevyengine.org"
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repository = "https://github.com/bevyengine/bevy"
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2021-07-23 21:11:51 +00:00
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license = "MIT OR Apache-2.0"
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2020-08-10 00:24:27 +00:00
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keywords = ["bevy"]
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2020-04-25 00:46:54 +00:00
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2021-12-22 20:59:48 +00:00
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[features]
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webgl = []
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Update to wgpu 0.19 and raw-window-handle 0.6 (#11280)
# Objective
Keep core dependencies up to date.
## Solution
Update the dependencies.
wgpu 0.19 only supports raw-window-handle (rwh) 0.6, so bumping that was
included in this.
The rwh 0.6 version bump is just the simplest way of doing it. There
might be a way we can take advantage of wgpu's new safe surface creation
api, but I'm not familiar enough with bevy's window management to
untangle it and my attempt ended up being a mess of lifetimes and rustc
complaining about missing trait impls (that were implemented). Thanks to
@MiniaczQ for the (much simpler) rwh 0.6 version bump code.
Unblocks https://github.com/bevyengine/bevy/pull/9172 and
https://github.com/bevyengine/bevy/pull/10812
~~This might be blocked on cpal and oboe updating their ndk versions to
0.8, as they both currently target ndk 0.7 which uses rwh 0.5.2~~ Tested
on android, and everything seems to work correctly (audio properly stops
when minimized, and plays when re-focusing the app).
---
## Changelog
- `wgpu` has been updated to 0.19! The long awaited arcanization has
been merged (for more info, see
https://gfx-rs.github.io/2023/11/24/arcanization.html), and Vulkan
should now be working again on Intel GPUs.
- Targeting WebGPU now requires that you add the new `webgpu` feature
(setting the `RUSTFLAGS` environment variable to
`--cfg=web_sys_unstable_apis` is still required). This feature currently
overrides the `webgl2` feature if you have both enabled (the `webgl2`
feature is enabled by default), so it is not recommended to add it as a
default feature to libraries without putting it behind a flag that
allows library users to opt out of it! In the future we plan on
supporting wasm binaries that can target both webgl2 and webgpu now that
wgpu added support for doing so (see
https://github.com/bevyengine/bevy/issues/11505).
- `raw-window-handle` has been updated to version 0.6.
## Migration Guide
- `bevy_render::instance_index::get_instance_index()` has been removed
as the webgl2 workaround is no longer required as it was fixed upstream
in wgpu. The `BASE_INSTANCE_WORKAROUND` shaderdef has also been removed.
- WebGPU now requires the new `webgpu` feature to be enabled. The
`webgpu` feature currently overrides the `webgl2` feature so you no
longer need to disable all default features and re-add them all when
targeting `webgpu`, but binaries built with both the `webgpu` and
`webgl2` features will only target the webgpu backend, and will only
work on browsers that support WebGPU.
- Places where you conditionally compiled things for webgl2 need to be
updated because of this change, eg:
- `#[cfg(any(not(feature = "webgl"), not(target_arch = "wasm32")))]`
becomes `#[cfg(any(not(feature = "webgl") ,not(target_arch = "wasm32"),
feature = "webgpu"))]`
- `#[cfg(all(feature = "webgl", target_arch = "wasm32"))]` becomes
`#[cfg(all(feature = "webgl", target_arch = "wasm32", not(feature =
"webgpu")))]`
- `if cfg!(all(feature = "webgl", target_arch = "wasm32"))` becomes `if
cfg!(all(feature = "webgl", target_arch = "wasm32", not(feature =
"webgpu")))`
- `create_texture_with_data` now also takes a `TextureDataOrder`. You
can probably just set this to `TextureDataOrder::default()`
- `TextureFormat`'s `block_size` has been renamed to `block_copy_size`
- See the `wgpu` changelog for anything I might've missed:
https://github.com/gfx-rs/wgpu/blob/trunk/CHANGELOG.md
---------
Co-authored-by: François <mockersf@gmail.com>
2024-01-26 18:14:21 +00:00
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webgpu = []
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`StandardMaterial` Light Transmission (#8015)
# Objective
<img width="1920" alt="Screenshot 2023-04-26 at 01 07 34"
src="https://user-images.githubusercontent.com/418473/234467578-0f34187b-5863-4ea1-88e9-7a6bb8ce8da3.png">
This PR adds both diffuse and specular light transmission capabilities
to the `StandardMaterial`, with support for screen space refractions.
This enables realistically representing a wide range of real-world
materials, such as:
- Glass; (Including frosted glass)
- Transparent and translucent plastics;
- Various liquids and gels;
- Gemstones;
- Marble;
- Wax;
- Paper;
- Leaves;
- Porcelain.
Unlike existing support for transparency, light transmission does not
rely on fixed function alpha blending, and therefore works with both
`AlphaMode::Opaque` and `AlphaMode::Mask` materials.
## Solution
- Introduces a number of transmission related fields in the
`StandardMaterial`;
- For specular transmission:
- Adds logic to take a view main texture snapshot after the opaque
phase; (in order to perform screen space refractions)
- Introduces a new `Transmissive3d` phase to the renderer, to which all
meshes with `transmission > 0.0` materials are sent.
- Calculates a light exit point (of the approximate mesh volume) using
`ior` and `thickness` properties
- Samples the snapshot texture with an adaptive number of taps across a
`roughness`-controlled radius enabling “blurry” refractions
- For diffuse transmission:
- Approximates transmitted diffuse light by using a second, flipped +
displaced, diffuse-only Lambertian lobe for each light source.
## To Do
- [x] Figure out where `fresnel_mix()` is taking place, if at all, and
where `dielectric_specular` is being calculated, if at all, and update
them to use the `ior` value (Not a blocker, just a nice-to-have for more
correct BSDF)
- To the _best of my knowledge, this is now taking place, after
964340cdd. The fresnel mix is actually "split" into two parts in our
implementation, one `(1 - fresnel(...))` in the transmission, and
`fresnel()` in the light implementations. A surface with more
reflectance now will produce slightly dimmer transmission towards the
grazing angle, as more of the light gets reflected.
- [x] Add `transmission_texture`
- [x] Add `diffuse_transmission_texture`
- [x] Add `thickness_texture`
- [x] Add `attenuation_distance` and `attenuation_color`
- [x] Connect values to glTF loader
- [x] `transmission` and `transmission_texture`
- [x] `thickness` and `thickness_texture`
- [x] `ior`
- [ ] `diffuse_transmission` and `diffuse_transmission_texture` (needs
upstream support in `gltf` crate, not a blocker)
- [x] Add support for multiple screen space refraction “steps”
- [x] Conditionally create no transmission snapshot texture at all if
`steps == 0`
- [x] Conditionally enable/disable screen space refraction transmission
snapshots
- [x] Read from depth pre-pass to prevent refracting pixels in front of
the light exit point
- [x] Use `interleaved_gradient_noise()` function for sampling blur in a
way that benefits from TAA
- [x] Drill down a TAA `#define`, tweak some aspects of the effect
conditionally based on it
- [x] Remove const array that's crashing under HLSL (unless a new `naga`
release with https://github.com/gfx-rs/naga/pull/2496 comes out before
we merge this)
- [ ] Look into alternatives to the `switch` hack for dynamically
indexing the const array (might not be needed, compilers seem to be
decent at expanding it)
- [ ] Add pipeline keys for gating transmission (do we really want/need
this?)
- [x] Tweak some material field/function names?
## A Note on Texture Packing
_This was originally added as a comment to the
`specular_transmission_texture`, `thickness_texture` and
`diffuse_transmission_texture` documentation, I removed it since it was
more confusing than helpful, and will likely be made redundant/will need
to be updated once we have a better infrastructure for preprocessing
assets_
Due to how channels are mapped, you can more efficiently use a single
shared texture image
for configuring the following:
- R - `specular_transmission_texture`
- G - `thickness_texture`
- B - _unused_
- A - `diffuse_transmission_texture`
The `KHR_materials_diffuse_transmission` glTF extension also defines a
`diffuseTransmissionColorTexture`,
that _we don't currently support_. One might choose to pack the
intensity and color textures together,
using RGB for the color and A for the intensity, in which case this
packing advice doesn't really apply.
---
## Changelog
- Added a new `Transmissive3d` render phase for rendering specular
transmissive materials with screen space refractions
- Added rendering support for transmitted environment map light on the
`StandardMaterial` as a fallback for screen space refractions
- Added `diffuse_transmission`, `specular_transmission`, `thickness`,
`ior`, `attenuation_distance` and `attenuation_color` to the
`StandardMaterial`
- Added `diffuse_transmission_texture`, `specular_transmission_texture`,
`thickness_texture` to the `StandardMaterial`, gated behind a new
`pbr_transmission_textures` cargo feature (off by default, for maximum
hardware compatibility)
- Added `Camera3d::screen_space_specular_transmission_steps` for
controlling the number of “layers of transparency” rendered for
transmissive objects
- Added a `TransmittedShadowReceiver` component for enabling shadows in
(diffusely) transmitted light. (disabled by default, as it requires
carefully setting up the `thickness` to avoid self-shadow artifacts)
- Added support for the `KHR_materials_transmission`,
`KHR_materials_ior` and `KHR_materials_volume` glTF extensions
- Renamed items related to temporal jitter for greater consistency
## Migration Guide
- `SsaoPipelineKey::temporal_noise` has been renamed to
`SsaoPipelineKey::temporal_jitter`
- The `TAA` shader def (controlled by the presence of the
`TemporalAntiAliasSettings` component in the camera) has been replaced
with the `TEMPORAL_JITTER` shader def (controlled by the presence of the
`TemporalJitter` component in the camera)
- `MeshPipelineKey::TAA` has been replaced by
`MeshPipelineKey::TEMPORAL_JITTER`
- The `TEMPORAL_NOISE` shader def has been consolidated with
`TEMPORAL_JITTER`
2023-10-31 20:59:02 +00:00
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pbr_transmission_textures = []
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Implement clearcoat per the Filament and the `KHR_materials_clearcoat` specifications. (#13031)
Clearcoat is a separate material layer that represents a thin
translucent layer of a material. Examples include (from the [Filament
spec]) car paint, soda cans, and lacquered wood. This commit implements
support for clearcoat following the Filament and Khronos specifications,
marking the beginnings of support for multiple PBR layers in Bevy.
The [`KHR_materials_clearcoat`] specification describes the clearcoat
support in glTF. In Blender, applying a clearcoat to the Principled BSDF
node causes the clearcoat settings to be exported via this extension. As
of this commit, Bevy parses and reads the extension data when present in
glTF. Note that the `gltf` crate has no support for
`KHR_materials_clearcoat`; this patch therefore implements the JSON
semantics manually.
Clearcoat is integrated with `StandardMaterial`, but the code is behind
a series of `#ifdef`s that only activate when clearcoat is present.
Additionally, the `pbr_feature_layer_material_textures` Cargo feature
must be active in order to enable support for clearcoat factor maps,
clearcoat roughness maps, and clearcoat normal maps. This approach
mirrors the same pattern used by the existing transmission feature and
exists to avoid running out of texture bindings on platforms like WebGL
and WebGPU. Note that constant clearcoat factors and roughness values
*are* supported in the browser; only the relatively-less-common maps are
disabled on those platforms.
This patch refactors the lighting code in `StandardMaterial`
significantly in order to better support multiple layers in a natural
way. That code was due for a refactor in any case, so this is a nice
improvement.
A new demo, `clearcoat`, has been added. It's based on [the
corresponding three.js demo], but all the assets (aside from the skybox
and environment map) are my original work.
[Filament spec]:
https://google.github.io/filament/Filament.html#materialsystem/clearcoatmodel
[`KHR_materials_clearcoat`]:
https://github.com/KhronosGroup/glTF/blob/main/extensions/2.0/Khronos/KHR_materials_clearcoat/README.md
[the corresponding three.js demo]:
https://threejs.org/examples/webgl_materials_physical_clearcoat.html
## Changelog
### Added
* `StandardMaterial` now supports a clearcoat layer, which represents a
thin translucent layer over an underlying material.
* The glTF loader now supports the `KHR_materials_clearcoat` extension,
representing materials with clearcoat layers.
## Migration Guide
* The lighting functions in the `pbr_lighting` WGSL module now have
clearcoat parameters, if `STANDARD_MATERIAL_CLEARCOAT` is defined.
* The `R` reflection vector parameter has been removed from some
lighting functions, as it was unused.
2024-05-05 22:57:05 +00:00
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pbr_multi_layer_material_textures = []
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2024-07-02 18:02:05 +00:00
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pbr_anisotropy_texture = []
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2024-11-14 07:39:26 +00:00
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experimental_pbr_pcss = []
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2024-02-25 15:19:27 +00:00
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shader_format_glsl = ["bevy_render/shader_format_glsl"]
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trace = ["bevy_render/trace"]
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ios_simulator = ["bevy_render/ios_simulator"]
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2024-03-25 19:08:27 +00:00
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# Enables the meshlet renderer for dense high-poly scenes (experimental)
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2024-10-22 20:14:30 +00:00
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meshlet = ["dep:lz4_flex", "dep:range-alloc", "dep:half", "dep:bevy_tasks"]
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2024-03-25 19:08:27 +00:00
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# Enables processing meshes into meshlet meshes
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Per-meshlet compressed vertex data (#15643)
# Objective
- Prepare for streaming by storing vertex data per-meshlet, rather than
per-mesh (this means duplicating vertices per-meshlet)
- Compress vertex data to reduce the cost of this
## Solution
The important parts are in from_mesh.rs, the changes to the Meshlet type
in asset.rs, and the changes in meshlet_bindings.wgsl. Everything else
is pretty secondary/boilerplate/straightforward changes.
- Positions are quantized in centimeters with a user-provided power of 2
factor (ideally auto-determined, but that's a TODO for the future),
encoded as an offset relative to the minimum value within the meshlet,
and then stored as a packed list of bits using the minimum number of
bits needed for each vertex position channel for that meshlet
- E.g. quantize positions (lossly, throws away precision that's not
needed leading to using less bits in the bitstream encoding)
- Get the min/max quantized value of each X/Y/Z channel of the quantized
positions within a meshlet
- Encode values relative to the min value of the meshlet. E.g. convert
from [min, max] to [0, max - min]
- The new max value in the meshlet is (max - min), which only takes N
bits, so we only need N bits to store each channel within the meshlet
(lossless)
- We can store the min value and that it takes N bits per channel in the
meshlet metadata, and reconstruct the position from the bitstream
- Normals are octahedral encoded and than snorm2x16 packed and stored as
a single u32.
- Would be better to implement the precise variant of octhedral encoding
for extra precision (no extra decode cost), but decided to keep it
simple for now and leave that as a followup
- Tried doing a quantizing and bitstream encoding scheme like I did for
positions, but struggled to get it smaller. Decided to go with this for
simplicity for now
- UVs are uncompressed and take a full 64bits per vertex which is
expensive
- In the future this should be improved
- Tangents, as of the previous PR, are not explicitly stored and are
instead derived from screen space gradients
- While I'm here, split up MeshletMeshSaverLoader into two separate
types
Other future changes include implementing a smaller encoding of triangle
data (3 u8 indices = 24 bits per triangle currently), and more
disk-oriented compression schemes.
References:
* "A Deep Dive into UE5's Nanite Virtualized Geometry"
https://advances.realtimerendering.com/s2021/Karis_Nanite_SIGGRAPH_Advances_2021_final.pdf#page=128
(also available on youtube)
* "Towards Practical Meshlet Compression"
https://arxiv.org/pdf/2404.06359
* "Vertex quantization in Omniforce Game Engine"
https://daniilvinn.github.io/2024/05/04/omniforce-vertex-quantization.html
## Testing
- Did you test these changes? If so, how?
- Converted the stanford bunny, and rendered it with a debug material
showing normals, and confirmed that it's identical to what's on main.
EDIT: See additional testing in the comments below.
- Are there any parts that need more testing?
- Could use some more size comparisons on various meshes, and testing
different quantization factors. Not sure if 4 is a good default. EDIT:
See additional testing in the comments below.
- Also did not test runtime performance of the shaders. EDIT: See
additional testing in the comments below.
- How can other people (reviewers) test your changes? Is there anything
specific they need to know?
- Use my unholy script, replacing the meshlet example
https://paste.rs/7xQHk.rs (must make MeshletMesh fields pub instead of
pub crate, must add lz4_flex as a dev-dependency) (must compile with
meshlet and meshlet_processor features, mesh must have only positions,
normals, and UVs, no vertex colors or tangents)
---
## Migration Guide
- TBD by JMS55 at the end of the release
2024-10-08 18:42:55 +00:00
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meshlet_processor = [
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"meshlet",
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"dep:meshopt",
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"dep:metis",
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"dep:itertools",
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"dep:bitvec",
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]
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2021-12-22 20:59:48 +00:00
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2020-04-25 00:46:54 +00:00
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[dependencies]
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2021-05-17 22:29:10 +00:00
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# bevy
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2024-07-08 12:54:08 +00:00
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bevy_app = { path = "../bevy_app", version = "0.15.0-dev" }
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bevy_asset = { path = "../bevy_asset", version = "0.15.0-dev" }
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bevy_color = { path = "../bevy_color", version = "0.15.0-dev" }
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bevy_core_pipeline = { path = "../bevy_core_pipeline", version = "0.15.0-dev" }
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2024-07-15 15:06:02 +00:00
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bevy_derive = { path = "../bevy_derive", version = "0.15.0-dev" }
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2024-07-08 12:54:08 +00:00
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bevy_ecs = { path = "../bevy_ecs", version = "0.15.0-dev" }
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2024-11-10 06:54:38 +00:00
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bevy_image = { path = "../bevy_image", version = "0.15.0-dev" }
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2024-07-08 12:54:08 +00:00
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bevy_math = { path = "../bevy_math", version = "0.15.0-dev" }
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bevy_reflect = { path = "../bevy_reflect", version = "0.15.0-dev", features = [
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2023-11-21 01:04:14 +00:00
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"bevy",
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] }
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2024-07-08 12:54:08 +00:00
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bevy_render = { path = "../bevy_render", version = "0.15.0-dev" }
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2024-07-15 15:06:02 +00:00
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bevy_tasks = { path = "../bevy_tasks", version = "0.15.0-dev", optional = true }
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2024-07-08 12:54:08 +00:00
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bevy_transform = { path = "../bevy_transform", version = "0.15.0-dev" }
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bevy_utils = { path = "../bevy_utils", version = "0.15.0-dev" }
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bevy_window = { path = "../bevy_window", version = "0.15.0-dev" }
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2021-05-17 22:29:10 +00:00
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Meshlet continuous LOD (#12755)
Adds a basic level of detail system to meshlets. An extremely brief
summary is as follows:
* In `from_mesh.rs`, once we've built the first level of clusters, we
group clusters, simplify the new mega-clusters, and then split the
simplified groups back into regular sized clusters. Repeat several times
(ideally until you can't anymore). This forms a directed acyclic graph
(DAG), where the children are the meshlets from the previous level, and
the parents are the more simplified versions of their children. The leaf
nodes are meshlets formed from the original mesh.
* In `cull_meshlets.wgsl`, each cluster selects whether to render or not
based on the LOD bounding sphere (different than the culling bounding
sphere) of the current meshlet, the LOD bounding sphere of its parent
(the meshlet group from simplification), and the simplification error
relative to its children of both the current meshlet and its parent
meshlet. This kind of breaks two pass occlusion culling, which will be
fixed in a future PR by using an HZB from the previous frame to get the
initial list of occluders.
Many, _many_ improvements to be done in the future
https://github.com/bevyengine/bevy/issues/11518, not least of which is
code quality and speed. I don't even expect this to work on many types
of input meshes. This is just a basic implementation/draft for
collaboration.
Arguable how much we want to do in this PR, I'll leave that up to
maintainers. I've erred on the side of "as basic as possible".
References:
* Slides 27-77 (video available on youtube)
https://advances.realtimerendering.com/s2021/Karis_Nanite_SIGGRAPH_Advances_2021_final.pdf
*
https://blog.traverseresearch.nl/creating-a-directed-acyclic-graph-from-a-mesh-1329e57286e5
*
https://jglrxavpok.github.io/2024/01/19/recreating-nanite-lod-generation.html,
https://jglrxavpok.github.io/2024/03/12/recreating-nanite-faster-lod-generation.html,
https://jglrxavpok.github.io/2024/04/02/recreating-nanite-runtime-lod-selection.html,
and https://github.com/jglrxavpok/Carrot
*
https://github.com/gents83/INOX/tree/master/crates/plugins/binarizer/src
* https://cs418.cs.illinois.edu/website/text/nanite.html
---------
Co-authored-by: Ricky Taylor <rickytaylor26@gmail.com>
Co-authored-by: vero <email@atlasdostal.com>
Co-authored-by: François <mockersf@gmail.com>
Co-authored-by: atlas dostal <rodol@rivalrebels.com>
Co-authored-by: Patrick Walton <pcwalton@mimiga.net>
2024-04-23 21:43:53 +00:00
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2021-05-17 22:29:10 +00:00
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# other
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2023-06-01 08:41:42 +00:00
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bitflags = "2.3"
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2024-03-17 18:43:05 +00:00
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fixedbitset = "0.5"
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2024-12-06 17:03:55 +00:00
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thiserror = { version = "2", default-features = false }
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derive_more = { version = "1", default-features = false, features = ["from"] }
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2024-10-22 20:14:30 +00:00
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# meshlet
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lz4_flex = { version = "0.11", default-features = false, features = [
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"frame",
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], optional = true }
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2024-07-29 22:11:29 +00:00
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range-alloc = { version = "0.1.3", optional = true }
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2024-10-22 20:14:30 +00:00
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half = { version = "2", features = ["bytemuck"], optional = true }
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2024-11-04 15:20:22 +00:00
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meshopt = { version = "0.4", optional = true }
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Meshlet continuous LOD (#12755)
Adds a basic level of detail system to meshlets. An extremely brief
summary is as follows:
* In `from_mesh.rs`, once we've built the first level of clusters, we
group clusters, simplify the new mega-clusters, and then split the
simplified groups back into regular sized clusters. Repeat several times
(ideally until you can't anymore). This forms a directed acyclic graph
(DAG), where the children are the meshlets from the previous level, and
the parents are the more simplified versions of their children. The leaf
nodes are meshlets formed from the original mesh.
* In `cull_meshlets.wgsl`, each cluster selects whether to render or not
based on the LOD bounding sphere (different than the culling bounding
sphere) of the current meshlet, the LOD bounding sphere of its parent
(the meshlet group from simplification), and the simplification error
relative to its children of both the current meshlet and its parent
meshlet. This kind of breaks two pass occlusion culling, which will be
fixed in a future PR by using an HZB from the previous frame to get the
initial list of occluders.
Many, _many_ improvements to be done in the future
https://github.com/bevyengine/bevy/issues/11518, not least of which is
code quality and speed. I don't even expect this to work on many types
of input meshes. This is just a basic implementation/draft for
collaboration.
Arguable how much we want to do in this PR, I'll leave that up to
maintainers. I've erred on the side of "as basic as possible".
References:
* Slides 27-77 (video available on youtube)
https://advances.realtimerendering.com/s2021/Karis_Nanite_SIGGRAPH_Advances_2021_final.pdf
*
https://blog.traverseresearch.nl/creating-a-directed-acyclic-graph-from-a-mesh-1329e57286e5
*
https://jglrxavpok.github.io/2024/01/19/recreating-nanite-lod-generation.html,
https://jglrxavpok.github.io/2024/03/12/recreating-nanite-faster-lod-generation.html,
https://jglrxavpok.github.io/2024/04/02/recreating-nanite-runtime-lod-selection.html,
and https://github.com/jglrxavpok/Carrot
*
https://github.com/gents83/INOX/tree/master/crates/plugins/binarizer/src
* https://cs418.cs.illinois.edu/website/text/nanite.html
---------
Co-authored-by: Ricky Taylor <rickytaylor26@gmail.com>
Co-authored-by: vero <email@atlasdostal.com>
Co-authored-by: François <mockersf@gmail.com>
Co-authored-by: atlas dostal <rodol@rivalrebels.com>
Co-authored-by: Patrick Walton <pcwalton@mimiga.net>
2024-04-23 21:43:53 +00:00
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metis = { version = "0.2", optional = true }
|
Update itertools requirement from 0.12 to 0.13 (#13526)
Updates the requirements on
[itertools](https://github.com/rust-itertools/itertools) to permit the
latest version.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/rust-itertools/itertools/blob/master/CHANGELOG.md">itertools's
changelog</a>.</em></p>
<blockquote>
<h2>0.13.0</h2>
<h3>Breaking</h3>
<ul>
<li>Removed implementation of <code>DoubleEndedIterator</code> for
<code>ConsTuples</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/853">#853</a>)</li>
<li>Made <code>MultiProduct</code> fused and fixed on an empty iterator
(<a
href="https://redirect.github.com/rust-itertools/itertools/issues/835">#835</a>,
<a
href="https://redirect.github.com/rust-itertools/itertools/issues/834">#834</a>)</li>
<li>Changed <code>iproduct!</code> to return tuples for maxi one
iterator too (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/870">#870</a>)</li>
<li>Changed <code>PutBack::put_back</code> to return the old value (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/880">#880</a>)</li>
<li>Removed deprecated <code>repeat_call, Itertools::{foreach, step,
map_results, fold_results}</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/878">#878</a>)</li>
<li>Removed <code>TakeWhileInclusive::new</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/912">#912</a>)</li>
</ul>
<h3>Added</h3>
<ul>
<li>Added <code>Itertools::{smallest_by, smallest_by_key, largest,
largest_by, largest_by_key}</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/654">#654</a>,
<a
href="https://redirect.github.com/rust-itertools/itertools/issues/885">#885</a>)</li>
<li>Added <code>Itertools::tail</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/899">#899</a>)</li>
<li>Implemented <code>DoubleEndedIterator</code> for
<code>ProcessResults</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/910">#910</a>)</li>
<li>Implemented <code>Debug</code> for <code>FormatWith</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/931">#931</a>)</li>
<li>Added <code>Itertools::get</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/891">#891</a>)</li>
</ul>
<h3>Changed</h3>
<ul>
<li>Deprecated <code>Itertools::group_by</code> (renamed
<code>chunk_by</code>) (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/866">#866</a>,
<a
href="https://redirect.github.com/rust-itertools/itertools/issues/879">#879</a>)</li>
<li>Deprecated <code>unfold</code> (use <code>std::iter::from_fn</code>
instead) (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/871">#871</a>)</li>
<li>Optimized <code>GroupingMapBy</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/873">#873</a>,
<a
href="https://redirect.github.com/rust-itertools/itertools/issues/876">#876</a>)</li>
<li>Relaxed <code>Fn</code> bounds to <code>FnMut</code> in
<code>diff_with, Itertools::into_group_map_by</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/886">#886</a>)</li>
<li>Relaxed <code>Debug/Clone</code> bounds for <code>MapInto</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/889">#889</a>)</li>
<li>Documented the <code>use_alloc</code> feature (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/887">#887</a>)</li>
<li>Optimized <code>Itertools::set_from</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/888">#888</a>)</li>
<li>Removed badges in <code>README.md</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/890">#890</a>)</li>
<li>Added "no-std" categories in <code>Cargo.toml</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/894">#894</a>)</li>
<li>Fixed <code>Itertools::k_smallest</code> on short unfused iterators
(<a
href="https://redirect.github.com/rust-itertools/itertools/issues/900">#900</a>)</li>
<li>Deprecated <code>Itertools::tree_fold1</code> (renamed
<code>tree_reduce</code>) (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/895">#895</a>)</li>
<li>Deprecated <code>GroupingMap::fold_first</code> (renamed
<code>reduce</code>) (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/902">#902</a>)</li>
<li>Fixed <code>Itertools::k_smallest(0)</code> to consume the iterator,
optimized <code>Itertools::k_smallest(1)</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/909">#909</a>)</li>
<li>Specialized <code>Combinations::nth</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/914">#914</a>)</li>
<li>Specialized <code>MergeBy::fold</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/920">#920</a>)</li>
<li>Specialized <code>CombinationsWithReplacement::nth</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/923">#923</a>)</li>
<li>Specialized <code>FlattenOk::{fold, rfold}</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/927">#927</a>)</li>
<li>Specialized <code>Powerset::nth</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/924">#924</a>)</li>
<li>Documentation fixes (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/882">#882</a>,
<a
href="https://redirect.github.com/rust-itertools/itertools/issues/936">#936</a>)</li>
<li>Fixed <code>assert_equal</code> for iterators longer than
<code>i32::MAX</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/932">#932</a>)</li>
<li>Updated the <code>must_use</code> message of non-lazy
<code>KMergeBy</code> and <code>TupleCombinations</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/939">#939</a>)</li>
</ul>
<h3>Notable Internal Changes</h3>
<ul>
<li>Tested iterator laziness (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/792">#792</a>)</li>
<li>Created <code>CONTRIBUTING.md</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/767">#767</a>)</li>
</ul>
<h2>0.12.1</h2>
<h3>Added</h3>
<ul>
<li>Documented iteration order guarantee for
<code>Itertools::[tuple_]combinations</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/822">#822</a>)</li>
<li>Documented possible panic in <code>iterate</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/842">#842</a>)</li>
<li>Implemented <code>Clone</code> and <code>Debug</code> for
<code>Diff</code> (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/845">#845</a>)</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/rust-itertools/itertools/commit/d5084d15e959b85d89a49e5cd33ad6267bc541a3"><code>d5084d1</code></a>
Prepare v0.13.0 release (<a
href="https://redirect.github.com/rust-itertools/itertools/issues/937">#937</a>)</li>
<li><a
href="https://github.com/rust-itertools/itertools/commit/d7c99d55daeaa76f482444e95beb99f5744ced4e"><code>d7c99d5</code></a>
<code>TupleCombinations</code> is not lazy but must be used
nonetheless</li>
<li><a
href="https://github.com/rust-itertools/itertools/commit/074c7fcc07c2bfd60f238585c05134ea3eb43f77"><code>074c7fc</code></a>
<code>KMergeBy</code> is not lazy but must be used nonetheless</li>
<li><a
href="https://github.com/rust-itertools/itertools/commit/2ad9e07ae860bb891e48b35edfea5b3286dcb4ab"><code>2ad9e07</code></a>
<code>assert_equal</code>: fix
<code>clippy::default_numeric_fallback</code></li>
<li><a
href="https://github.com/rust-itertools/itertools/commit/0d4efc84323399b47b09ae9da1ff3fdfc2cf95e1"><code>0d4efc8</code></a>
Remove free function <code>get</code></li>
<li><a
href="https://github.com/rust-itertools/itertools/commit/05cc0ee256e84d665e34209053ebc62ef7e4463d"><code>05cc0ee</code></a>
<code>get(s..=usize::MAX)</code> should be fine when <code>s !=
0</code></li>
<li><a
href="https://github.com/rust-itertools/itertools/commit/3c16f14baa5515376adcd8c530f6d3d275b14f44"><code>3c16f14</code></a>
<code>get</code>: when is it ESI and/or DEI</li>
<li><a
href="https://github.com/rust-itertools/itertools/commit/4dd6ba0e7c44bb287dff1098d8fb6ab77c32bf87"><code>4dd6ba0</code></a>
<code>get</code>: panics if the range includes
<code>usize::MAX</code></li>
<li><a
href="https://github.com/rust-itertools/itertools/commit/7a9ce56fc59489668178d696db76afb3580a359c"><code>7a9ce56</code></a>
<code>get(r: Range)</code> as <code>Skip\<Take></code></li>
<li><a
href="https://github.com/rust-itertools/itertools/commit/f676f2f96451220c827c62f714d79ce6454d0184"><code>f676f2f</code></a>
Remove the unspecified check about
<code>.get(exhausted_range_inclusive)</code></li>
<li>Additional commits viewable in <a
href="https://github.com/rust-itertools/itertools/compare/v0.12.0...v0.13.0">compare
view</a></li>
</ul>
</details>
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`@dependabot rebase`.
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<br />
You can trigger Dependabot actions by commenting on this PR:
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Signed-off-by: dependabot[bot] <support@github.com>
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2024-05-27 16:35:52 +00:00
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itertools = { version = "0.13", optional = true }
|
Per-meshlet compressed vertex data (#15643)
# Objective
- Prepare for streaming by storing vertex data per-meshlet, rather than
per-mesh (this means duplicating vertices per-meshlet)
- Compress vertex data to reduce the cost of this
## Solution
The important parts are in from_mesh.rs, the changes to the Meshlet type
in asset.rs, and the changes in meshlet_bindings.wgsl. Everything else
is pretty secondary/boilerplate/straightforward changes.
- Positions are quantized in centimeters with a user-provided power of 2
factor (ideally auto-determined, but that's a TODO for the future),
encoded as an offset relative to the minimum value within the meshlet,
and then stored as a packed list of bits using the minimum number of
bits needed for each vertex position channel for that meshlet
- E.g. quantize positions (lossly, throws away precision that's not
needed leading to using less bits in the bitstream encoding)
- Get the min/max quantized value of each X/Y/Z channel of the quantized
positions within a meshlet
- Encode values relative to the min value of the meshlet. E.g. convert
from [min, max] to [0, max - min]
- The new max value in the meshlet is (max - min), which only takes N
bits, so we only need N bits to store each channel within the meshlet
(lossless)
- We can store the min value and that it takes N bits per channel in the
meshlet metadata, and reconstruct the position from the bitstream
- Normals are octahedral encoded and than snorm2x16 packed and stored as
a single u32.
- Would be better to implement the precise variant of octhedral encoding
for extra precision (no extra decode cost), but decided to keep it
simple for now and leave that as a followup
- Tried doing a quantizing and bitstream encoding scheme like I did for
positions, but struggled to get it smaller. Decided to go with this for
simplicity for now
- UVs are uncompressed and take a full 64bits per vertex which is
expensive
- In the future this should be improved
- Tangents, as of the previous PR, are not explicitly stored and are
instead derived from screen space gradients
- While I'm here, split up MeshletMeshSaverLoader into two separate
types
Other future changes include implementing a smaller encoding of triangle
data (3 u8 indices = 24 bits per triangle currently), and more
disk-oriented compression schemes.
References:
* "A Deep Dive into UE5's Nanite Virtualized Geometry"
https://advances.realtimerendering.com/s2021/Karis_Nanite_SIGGRAPH_Advances_2021_final.pdf#page=128
(also available on youtube)
* "Towards Practical Meshlet Compression"
https://arxiv.org/pdf/2404.06359
* "Vertex quantization in Omniforce Game Engine"
https://daniilvinn.github.io/2024/05/04/omniforce-vertex-quantization.html
## Testing
- Did you test these changes? If so, how?
- Converted the stanford bunny, and rendered it with a debug material
showing normals, and confirmed that it's identical to what's on main.
EDIT: See additional testing in the comments below.
- Are there any parts that need more testing?
- Could use some more size comparisons on various meshes, and testing
different quantization factors. Not sure if 4 is a good default. EDIT:
See additional testing in the comments below.
- Also did not test runtime performance of the shaders. EDIT: See
additional testing in the comments below.
- How can other people (reviewers) test your changes? Is there anything
specific they need to know?
- Use my unholy script, replacing the meshlet example
https://paste.rs/7xQHk.rs (must make MeshletMesh fields pub instead of
pub crate, must add lz4_flex as a dev-dependency) (must compile with
meshlet and meshlet_processor features, mesh must have only positions,
normals, and UVs, no vertex colors or tangents)
---
## Migration Guide
- TBD by JMS55 at the end of the release
2024-10-08 18:42:55 +00:00
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bitvec = { version = "1", optional = true }
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2021-05-17 22:29:10 +00:00
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# direct dependency required for derive macro
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2024-04-05 02:11:41 +00:00
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bytemuck = { version = "1", features = ["derive", "must_cast"] }
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Use GpuArrayBuffer for MeshUniform (#9254)
# Objective
- Reduce the number of rebindings to enable batching of draw commands
## Solution
- Use the new `GpuArrayBuffer` for `MeshUniform` data to store all
`MeshUniform` data in arrays within fewer bindings
- Sort opaque/alpha mask prepass, opaque/alpha mask main, and shadow
phases also by the batch per-object data binding dynamic offset to
improve performance on WebGL2.
---
## Changelog
- Changed: Per-object `MeshUniform` data is now managed by
`GpuArrayBuffer` as arrays in buffers that need to be indexed into.
## Migration Guide
Accessing the `model` member of an individual mesh object's shader
`Mesh` struct the old way where each `MeshUniform` was stored at its own
dynamic offset:
```rust
struct Vertex {
@location(0) position: vec3<f32>,
};
fn vertex(vertex: Vertex) -> VertexOutput {
var out: VertexOutput;
out.clip_position = mesh_position_local_to_clip(
mesh.model,
vec4<f32>(vertex.position, 1.0)
);
return out;
}
```
The new way where one needs to index into the array of `Mesh`es for the
batch:
```rust
struct Vertex {
@builtin(instance_index) instance_index: u32,
@location(0) position: vec3<f32>,
};
fn vertex(vertex: Vertex) -> VertexOutput {
var out: VertexOutput;
out.clip_position = mesh_position_local_to_clip(
mesh[vertex.instance_index].model,
vec4<f32>(vertex.position, 1.0)
);
return out;
}
```
Note that using the instance_index is the default way to pass the
per-object index into the shader, but if you wish to do custom rendering
approaches you can pass it in however you like.
---------
Co-authored-by: robtfm <50659922+robtfm@users.noreply.github.com>
Co-authored-by: Elabajaba <Elabajaba@users.noreply.github.com>
2023-07-30 13:17:08 +00:00
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radsort = "0.1"
|
Implement minimal reflection probes (fixed macOS, iOS, and Android). (#11366)
This pull request re-submits #10057, which was backed out for breaking
macOS, iOS, and Android. I've tested this version on macOS and Android
and on the iOS simulator.
# Objective
This pull request implements *reflection probes*, which generalize
environment maps to allow for multiple environment maps in the same
scene, each of which has an axis-aligned bounding box. This is a
standard feature of physically-based renderers and was inspired by [the
corresponding feature in Blender's Eevee renderer].
## Solution
This is a minimal implementation of reflection probes that allows
artists to define cuboid bounding regions associated with environment
maps. For every view, on every frame, a system builds up a list of the
nearest 4 reflection probes that are within the view's frustum and
supplies that list to the shader. The PBR fragment shader searches
through the list, finds the first containing reflection probe, and uses
it for indirect lighting, falling back to the view's environment map if
none is found. Both forward and deferred renderers are fully supported.
A reflection probe is an entity with a pair of components, *LightProbe*
and *EnvironmentMapLight* (as well as the standard *SpatialBundle*, to
position it in the world). The *LightProbe* component (along with the
*Transform*) defines the bounding region, while the
*EnvironmentMapLight* component specifies the associated diffuse and
specular cubemaps.
A frequent question is "why two components instead of just one?" The
advantages of this setup are:
1. It's readily extensible to other types of light probes, in particular
*irradiance volumes* (also known as ambient cubes or voxel global
illumination), which use the same approach of bounding cuboids. With a
single component that applies to both reflection probes and irradiance
volumes, we can share the logic that implements falloff and blending
between multiple light probes between both of those features.
2. It reduces duplication between the existing *EnvironmentMapLight* and
these new reflection probes. Systems can treat environment maps attached
to cameras the same way they treat environment maps applied to
reflection probes if they wish.
Internally, we gather up all environment maps in the scene and place
them in a cubemap array. At present, this means that all environment
maps must have the same size, mipmap count, and texture format. A
warning is emitted if this restriction is violated. We could potentially
relax this in the future as part of the automatic mipmap generation
work, which could easily do texture format conversion as part of its
preprocessing.
An easy way to generate reflection probe cubemaps is to bake them in
Blender and use the `export-blender-gi` tool that's part of the
[`bevy-baked-gi`] project. This tool takes a `.blend` file containing
baked cubemaps as input and exports cubemap images, pre-filtered with an
embedded fork of the [glTF IBL Sampler], alongside a corresponding
`.scn.ron` file that the scene spawner can use to recreate the
reflection probes.
Note that this is intentionally a minimal implementation, to aid
reviewability. Known issues are:
* Reflection probes are basically unsupported on WebGL 2, because WebGL
2 has no cubemap arrays. (Strictly speaking, you can have precisely one
reflection probe in the scene if you have no other cubemaps anywhere,
but this isn't very useful.)
* Reflection probes have no falloff, so reflections will abruptly change
when objects move from one bounding region to another.
* As mentioned before, all cubemaps in the world of a given type
(diffuse or specular) must have the same size, format, and mipmap count.
Future work includes:
* Blending between multiple reflection probes.
* A falloff/fade-out region so that reflected objects disappear
gradually instead of vanishing all at once.
* Irradiance volumes for voxel-based global illumination. This should
reuse much of the reflection probe logic, as they're both GI techniques
based on cuboid bounding regions.
* Support for WebGL 2, by breaking batches when reflection probes are
used.
These issues notwithstanding, I think it's best to land this with
roughly the current set of functionality, because this patch is useful
as is and adding everything above would make the pull request
significantly larger and harder to review.
---
## Changelog
### Added
* A new *LightProbe* component is available that specifies a bounding
region that an *EnvironmentMapLight* applies to. The combination of a
*LightProbe* and an *EnvironmentMapLight* offers *reflection probe*
functionality similar to that available in other engines.
[the corresponding feature in Blender's Eevee renderer]:
https://docs.blender.org/manual/en/latest/render/eevee/light_probes/reflection_cubemaps.html
[`bevy-baked-gi`]: https://github.com/pcwalton/bevy-baked-gi
[glTF IBL Sampler]: https://github.com/KhronosGroup/glTF-IBL-Sampler
2024-01-19 07:33:52 +00:00
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smallvec = "1.6"
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2024-03-07 02:30:15 +00:00
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nonmax = "0.5"
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Micro-optimize `queue_material_meshes`, primarily to remove bit manipulation. (#12791)
This commit makes the following optimizations:
## `MeshPipelineKey`/`BaseMeshPipelineKey` split
`MeshPipelineKey` has been split into `BaseMeshPipelineKey`, which lives
in `bevy_render` and `MeshPipelineKey`, which lives in `bevy_pbr`.
Conceptually, `BaseMeshPipelineKey` is a superclass of
`MeshPipelineKey`. For `BaseMeshPipelineKey`, the bits start at the
highest (most significant) bit and grow downward toward the lowest bit;
for `MeshPipelineKey`, the bits start at the lowest bit and grow upward
toward the highest bit. This prevents them from colliding.
The goal of this is to avoid having to reassemble bits of the pipeline
key for every mesh every frame. Instead, we can just use a bitwise or
operation to combine the pieces that make up a `MeshPipelineKey`.
## `specialize_slow`
Previously, all of `specialize()` was marked as `#[inline]`. This
bloated `queue_material_meshes` unnecessarily, as a large chunk of it
ended up being a slow path that was rarely hit. This commit refactors
the function to move the slow path to `specialize_slow()`.
Together, these two changes shave about 5% off `queue_material_meshes`:
## Migration Guide
- The `primitive_topology` field on `GpuMesh` is now an accessor method:
`GpuMesh::primitive_topology()`.
- For performance reasons, `MeshPipelineKey` has been split into
`BaseMeshPipelineKey`, which lives in `bevy_render`, and
`MeshPipelineKey`, which lives in `bevy_pbr`. These two should be
combined with bitwise-or to produce the final `MeshPipelineKey`.
2024-04-01 21:58:53 +00:00
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static_assertions = "1"
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2023-11-18 20:58:48 +00:00
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[lints]
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workspace = true
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2024-03-08 20:03:09 +00:00
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[package.metadata.docs.rs]
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2024-07-29 23:10:16 +00:00
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rustdoc-args = ["-Zunstable-options", "--generate-link-to-definition"]
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2024-03-08 20:03:09 +00:00
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all-features = true
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