bevy/crates/bevy_gltf/Cargo.toml

57 lines
1.8 KiB
TOML
Raw Normal View History

[package]
name = "bevy_gltf"
version = "0.12.0"
edition = "2021"
2020-08-10 00:24:27 +00:00
description = "Bevy Engine GLTF loading"
homepage = "https://bevyengine.org"
repository = "https://github.com/bevyengine/bevy"
Relicense Bevy under the dual MIT or Apache-2.0 license (#2509) This relicenses Bevy under the dual MIT or Apache-2.0 license. For rationale, see #2373. * Changes the LICENSE file to describe the dual license. Moved the MIT license to docs/LICENSE-MIT. Added the Apache-2.0 license to docs/LICENSE-APACHE. I opted for this approach over dumping both license files at the root (the more common approach) for a number of reasons: * Github links to the "first" license file (LICENSE-APACHE) in its license links (you can see this in the wgpu and rust-analyzer repos). People clicking these links might erroneously think that the apache license is the only option. Rust and Amethyst both use COPYRIGHT or COPYING files to solve this problem, but this creates more file noise (if you do everything at the root) and the naming feels way less intuitive. * People have a reflex to look for a LICENSE file. By providing a single license file at the root, we make it easy for them to understand our licensing approach. * I like keeping the root clean and noise free * There is precedent for putting the apache and mit license text in sub folders (amethyst) * Removed the `Copyright (c) 2020 Carter Anderson` copyright notice from the MIT license. I don't care about this attribution, it might make license compliance more difficult in some cases, and it didn't properly attribute other contributors. We shoudn't replace it with something like "Copyright (c) 2021 Bevy Contributors" because "Bevy Contributors" is not a legal entity. Instead, we just won't include the copyright line (which has precedent ... Rust also uses this approach). * Updates crates to use the new "MIT OR Apache-2.0" license value * Removes the old legion-transform license file from bevy_transform. bevy_transform has been its own, fully custom implementation for a long time and that license no longer applies. * Added a License section to the main readme * Updated our Bevy Plugin licensing guidelines. As a follow-up we should update the website to properly describe the new license. Closes #2373
2021-07-23 21:11:51 +00:00
license = "MIT OR Apache-2.0"
2020-08-10 00:24:27 +00:00
keywords = ["bevy"]
`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
[features]
pbr_transmission_textures = []
[dependencies]
# bevy
bevy_animation = { path = "../bevy_animation", version = "0.12.0", optional = true }
bevy_app = { path = "../bevy_app", version = "0.12.0" }
bevy_asset = { path = "../bevy_asset", version = "0.12.0" }
bevy_core = { path = "../bevy_core", version = "0.12.0" }
bevy_core_pipeline = { path = "../bevy_core_pipeline", version = "0.12.0" }
bevy_ecs = { path = "../bevy_ecs", version = "0.12.0" }
bevy_hierarchy = { path = "../bevy_hierarchy", version = "0.12.0" }
bevy_log = { path = "../bevy_log", version = "0.12.0" }
bevy_math = { path = "../bevy_math", version = "0.12.0" }
bevy_pbr = { path = "../bevy_pbr", version = "0.12.0" }
bevy_reflect = { path = "../bevy_reflect", version = "0.12.0", features = [
"bevy",
] }
bevy_render = { path = "../bevy_render", version = "0.12.0" }
bevy_scene = { path = "../bevy_scene", version = "0.12.0", features = [
"bevy_render",
] }
bevy_transform = { path = "../bevy_transform", version = "0.12.0" }
bevy_tasks = { path = "../bevy_tasks", version = "0.12.0" }
bevy_utils = { path = "../bevy_utils", version = "0.12.0" }
# other
gltf = { version = "1.3.0", default-features = false, features = [
"KHR_lights_punctual",
"KHR_materials_transmission",
"KHR_materials_ior",
"KHR_materials_volume",
"KHR_materials_unlit",
"KHR_materials_emissive_strength",
"extras",
"names",
"utils",
] }
thiserror = "1.0"
base64 = "0.13.0"
percent-encoding = "2.1"
Add morph targets (#8158) # Objective - Add morph targets to `bevy_pbr` (closes #5756) & load them from glTF - Supersedes #3722 - Fixes #6814 [Morph targets][1] (also known as shape interpolation, shape keys, or blend shapes) allow animating individual vertices with fine grained controls. This is typically used for facial expressions. By specifying multiple poses as vertex offset, and providing a set of weight of each pose, it is possible to define surprisingly realistic transitions between poses. Blending between multiple poses also allow composition. Morph targets are part of the [gltf standard][2] and are a feature of Unity and Unreal, and babylone.js, it is only natural to implement them in bevy. ## Solution This implementation of morph targets uses a 3d texture where each pixel is a component of an animated attribute. Each layer is a different target. We use a 2d texture for each target, because the number of attribute×components×animated vertices is expected to always exceed the maximum pixel row size limit of webGL2. It copies fairly closely the way skinning is implemented on the CPU side, while on the GPU side, the shader morph target implementation is a relatively trivial detail. We add an optional `morph_texture` to the `Mesh` struct. The `morph_texture` is built through a method that accepts an iterator over attribute buffers. The `MorphWeights` component, user-accessible, controls the blend of poses used by mesh instances (so that multiple copy of the same mesh may have different weights), all the weights are uploaded to a uniform buffer of 256 `f32`. We limit to 16 poses per mesh, and a total of 256 poses. More literature: * Old babylone.js implementation (vertex attribute-based): https://www.eternalcoding.com/dev-log-1-morph-targets/ * Babylone.js implementation (similar to ours): https://www.youtube.com/watch?v=LBPRmGgU0PE * GPU gems 3: https://developer.nvidia.com/gpugems/gpugems3/part-i-geometry/chapter-3-directx-10-blend-shapes-breaking-limits * Development discord thread https://discord.com/channels/691052431525675048/1083325980615114772 https://user-images.githubusercontent.com/26321040/231181046-3bca2ab2-d4d9-472e-8098-639f1871ce2e.mp4 https://github.com/bevyengine/bevy/assets/26321040/d2a0c544-0ef8-45cf-9f99-8c3792f5a258 ## Acknowledgements * Thanks to `storytold` for sponsoring the feature * Thanks to `superdump` and `james7132` for guidance and help figuring out stuff ## Future work - Handling of less and more attributes (eg: animated uv, animated arbitrary attributes) - Dynamic pose allocation (so that zero-weighted poses aren't uploaded to GPU for example, enables much more total poses) - Better animation API, see #8357 ---- ## Changelog - Add morph targets to bevy meshes - Support up to 64 poses per mesh of individually up to 116508 vertices, animation currently strictly limited to the position, normal and tangent attributes. - Load a morph target using `Mesh::set_morph_targets` - Add `VisitMorphTargets` and `VisitMorphAttributes` traits to `bevy_render`, this allows defining morph targets (a fairly complex and nested data structure) through iterators (ie: single copy instead of passing around buffers), see documentation of those traits for details - Add `MorphWeights` component exported by `bevy_render` - `MorphWeights` control mesh's morph target weights, blending between various poses defined as morph targets. - `MorphWeights` are directly inherited by direct children (single level of hierarchy) of an entity. This allows controlling several mesh primitives through a unique entity _as per GLTF spec_. - Add `MorphTargetNames` component, naming each indices of loaded morph targets. - Load morph targets weights and buffers in `bevy_gltf` - handle morph targets animations in `bevy_animation` (previously, it was a `warn!` log) - Add the `MorphStressTest.gltf` asset for morph targets testing, taken from the glTF samples repo, CC0. - Add morph target manipulation to `scene_viewer` - Separate the animation code in `scene_viewer` from the rest of the code, reducing `#[cfg(feature)]` noise - Add the `morph_targets.rs` example to show off how to manipulate morph targets, loading `MorpStressTest.gltf` ## Migration Guide - (very specialized, unlikely to be touched by 3rd parties) - `MeshPipeline` now has a single `mesh_layouts` field rather than separate `mesh_layout` and `skinned_mesh_layout` fields. You should handle all possible mesh bind group layouts in your implementation - You should also handle properly the new `MORPH_TARGETS` shader def and mesh pipeline key. A new function is exposed to make this easier: `setup_moprh_and_skinning_defs` - The `MeshBindGroup` is now `MeshBindGroups`, cached bind groups are now accessed through the `get` method. [1]: https://en.wikipedia.org/wiki/Morph_target_animation [2]: https://registry.khronos.org/glTF/specs/2.0/glTF-2.0.html#morph-targets --------- Co-authored-by: François <mockersf@gmail.com> Co-authored-by: Carter Anderson <mcanders1@gmail.com>
2023-06-22 20:00:01 +00:00
serde = { version = "1.0", features = ["derive"] }
serde_json = "1"
[lints]
workspace = true