SelectionModifier

wgpu_3dgs_editor

Struct SelectionModifier 

Source 
pub struct SelectionModifier<G: GaussianPod, M: Modifier<G>> {
    pub selection_expr: SelectionExpr,
    pub selection_buffer: SelectionBuffer,
    pub selection: SelectionBundle<G>,
    pub modifier: M,
}
Expand description

A struct to handle custom selection and custom modifier together.

§Overview

This modifier holdes a SelectionBundle and a Modifier along with necessary buffers, and applies the selection followed by the basic modifier in order.

The Modifier can use the SelectionModifier::selection_buffer to determine which Gaussians to modify.

§Usage

You can supply your own selection bundles and modifier when creating a SelectionModifier.

The creation expects a modifier factory function instead of a modifier, so that the modifier can be created with a reference to the selection buffer.

// Create your selection bundles
let selection_bundles = vec![
  SelectionBundle::<GaussianPod>::create_sphere_bundle(&device), // The built-in sphere selection bundle as example
];

struct MyCustomModifier(ComputeBundle);

impl MyCustomModifier {
    pub fn new(device: &wgpu::Device, /* Your buffers */, selection: &SelectionBuffer) -> Self {
        // Build your compute bundle here,
        // and include the selection buffer to only modify selected Gaussians
        let compute_bundle = ComputeBundleBuilder::new().build(&device, /* Your buffers */);
        Self(compute_bundle)
    }
}

impl Modifier<GaussianPod> for MyCustomModifier {
    fn apply(
        &self,
        device: &wgpu::Device,
        encoder: &mut wgpu::CommandEncoder,
        gaussians: &GaussiansBuffer<GaussianPod>,
        model_transform: &ModelTransformBuffer,
        gaussian_transform: &GaussianTransformBuffer,
    ) {
        self.0.dispatch(encoder, gaussians.len() as u32);
    }
}

let selection_modifier = SelectionModifier::new(
    &device,
    &gaussians_buffer,
    selection_bundles,
    |selection_buffer| { // The factory closure
        BasicModifier::new_with_selection(
            device,
            // Your buffers,
            selection_buffer,
        )
    },
);

Alternatively, you can use a modifier closure instead of a struct (but be reminded this could harm readability of your code).

let selection_modifier = SelectionModifier::<GaussianPod>::new(
    &device,
    &gaussians_buffer,
    selection_bundles,
    |selection_buffer| { // The factory closure
        // Build your compute bundle here,
        // and include the selection buffer to only modify selected Gaussians
        let modifier_bundle = ComputeBundleBuilder::new().build(&device, /* Your buffers */);

        // This function signature has blanket impl of the modifier trait
        move |_device: &wgpu::Device,
              encoder: &mut wgpu::CommandEncoder,
              gaussians: &gs::core::GaussiansBuffer<GaussianPod>,
              _model_transform: &gs::core::ModelTransformBuffer,
              _gaussian_transform: &gs::core::GaussianTransformBuffer| {
            modifier_bundle.dispatch(encoder, gaussians.len() as u32);
        }
    },
);

Fields§

§selection_expr: SelectionExpr§selection_buffer: SelectionBuffer§selection: SelectionBundle<G>§modifier: M

Implementations§

Source§

impl<G: GaussianPod, M: Modifier<G>> SelectionModifier<G, M>

Source

pub fn new( device: &Device, gaussians_buffer: &GaussiansBuffer<G>, selection_bundles: Vec<ComputeBundle<()>>, modifier: impl FnOnce(&SelectionBuffer) -> M, ) -> Self

Create a new selection modifier.

bundles are used for SelectionExpr::Unary, SelectionExpr::Binary, or SelectionExpr::Selection, they must have the same bind group 0 as the SelectionBundle::GAUSSIANS_BIND_GROUP_LAYOUT_DESCRIPTOR, see documentation of SelectionBundle for more details.

Examples found in repository?
examples/custom_modify_selection.rs (lines 294-309)
53async fn main() {
54    env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("info")).init();
55
56    let args = Args::parse();
57    let model_path = &args.model;
58    let pos = Vec3::from_slice(&args.pos);
59    let radius = args.radius;
60
61    log::debug!("Creating wgpu instance");
62    let instance = wgpu::Instance::new(&wgpu::InstanceDescriptor::default());
63
64    log::debug!("Requesting adapter");
65    let adapter = instance
66        .request_adapter(&wgpu::RequestAdapterOptions::default())
67        .await
68        .expect("adapter");
69
70    log::debug!("Requesting device");
71    let (device, queue) = adapter
72        .request_device(&wgpu::DeviceDescriptor {
73            label: Some("Device"),
74            required_features: wgpu::Features::empty(),
75            required_limits: adapter.limits(),
76            memory_hints: wgpu::MemoryHints::default(),
77            trace: wgpu::Trace::Off,
78        })
79        .await
80        .expect("device");
81
82    log::debug!("Creating gaussians");
83    let f = std::fs::File::open(model_path).expect("ply file");
84    let mut reader = std::io::BufReader::new(f);
85    let gaussians = gs::core::Gaussians::read_ply(&mut reader).expect("gaussians");
86
87    log::debug!("Creating editor");
88    let editor = gs::Editor::<GaussianPod>::new(&device, &gaussians);
89
90    log::debug!("Creating buffers");
91    let pos_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
92        label: Some("Position Buffer"),
93        contents: bytemuck::bytes_of(&pos),
94        usage: wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST,
95    });
96
97    let radius_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
98        label: Some("Radius Buffer"),
99        contents: bytemuck::bytes_of(&radius),
100        usage: wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST,
101    });
102
103    const BIND_GROUP_LAYOUT_DESCRIPTOR: wgpu::BindGroupLayoutDescriptor =
104        wgpu::BindGroupLayoutDescriptor {
105            label: Some("Bind Group Layout"),
106            entries: &[
107                // Position uniform buffer
108                wgpu::BindGroupLayoutEntry {
109                    binding: 0,
110                    visibility: wgpu::ShaderStages::COMPUTE,
111                    ty: wgpu::BindingType::Buffer {
112                        ty: wgpu::BufferBindingType::Uniform,
113                        has_dynamic_offset: false,
114                        min_binding_size: None,
115                    },
116                    count: None,
117                },
118                // Radius uniform buffer
119                wgpu::BindGroupLayoutEntry {
120                    binding: 1,
121                    visibility: wgpu::ShaderStages::COMPUTE,
122                    ty: wgpu::BindingType::Buffer {
123                        ty: wgpu::BufferBindingType::Uniform,
124                        has_dynamic_offset: false,
125                        min_binding_size: None,
126                    },
127                    count: None,
128                },
129                // Selection buffer (only in modifier pipeline)
130                wgpu::BindGroupLayoutEntry {
131                    binding: 2,
132                    visibility: wgpu::ShaderStages::COMPUTE,
133                    ty: wgpu::BindingType::Buffer {
134                        ty: wgpu::BufferBindingType::Storage { read_only: true },
135                        has_dynamic_offset: false,
136                        min_binding_size: None,
137                    },
138                    count: None,
139                },
140            ],
141        };
142
143    log::debug!("Creating cylinder selection compute bundle");
144    let cylinder_selection_bundle = gs::core::ComputeBundleBuilder::new()
145        .label("Selection")
146        .bind_group_layouts([
147            &gs::SelectionBundle::<GaussianPod>::GAUSSIANS_BIND_GROUP_LAYOUT_DESCRIPTOR,
148            &wgpu::BindGroupLayoutDescriptor {
149                entries: &BIND_GROUP_LAYOUT_DESCRIPTOR.entries[..2],
150                ..BIND_GROUP_LAYOUT_DESCRIPTOR
151            },
152        ])
153        .main_shader("package::selection".parse().unwrap())
154        .entry_point("main")
155        .wesl_compile_options(wesl::CompileOptions {
156            features: GaussianPod::wesl_features(),
157            ..Default::default()
158        })
159        .resolver({
160            let mut resolver =
161                wesl::StandardResolver::new("examples/shader/custom_modify_selection");
162            resolver.add_package(&gs::core::shader::PACKAGE);
163            resolver
164        })
165        .build_without_bind_groups(&device)
166        .map_err(|e| log::error!("{e}"))
167        .expect("selection bundle");
168
169    log::debug!("Creating custom modifier");
170    #[allow(dead_code)]
171    let modifier_factory = |selection_buffer: &gs::SelectionBuffer| /* -> impl gs::Modifier<GaussianPod> */ {
172            log::debug!("Creating custom modifier compute bundle");
173            let modifier_bundle = gs::core::ComputeBundleBuilder::new()
174                .label("Modifier")
175                .bind_group_layouts([
176                    &gs::MODIFIER_GAUSSIANS_BIND_GROUP_LAYOUT_DESCRIPTOR,
177                    &BIND_GROUP_LAYOUT_DESCRIPTOR,
178                ])
179                .resolver({
180                    let mut resolver =
181                        wesl::StandardResolver::new("examples/shader/custom_modify_selection");
182                    resolver.add_package(&gs::core::shader::PACKAGE);
183                    resolver.add_package(&gs::shader::PACKAGE);
184                    resolver
185                })
186                .main_shader("package::modifier".parse().unwrap())
187                .entry_point("main")
188                .wesl_compile_options(wesl::CompileOptions {
189                    features: GaussianPod::wesl_features(),
190                    ..Default::default()
191                })
192                .build(
193                    &device,
194                    [
195                        vec![
196                            editor.gaussians_buffer.buffer().as_entire_binding(),
197                            editor.model_transform_buffer.buffer().as_entire_binding(),
198                            editor
199                                .gaussian_transform_buffer
200                                .buffer()
201                                .as_entire_binding(),
202                        ],
203                        vec![
204                            pos_buffer.as_entire_binding(),
205                            radius_buffer.as_entire_binding(),
206                            selection_buffer.buffer().as_entire_binding(),
207                        ],
208                    ],
209                )
210                .map_err(|e| log::error!("{e}"))
211                .expect("modifier bundle");
212
213            // This is a modifier closure because this function signature has blanket impl of the modifier trait
214            move |_device: &wgpu::Device,
215                  encoder: &mut wgpu::CommandEncoder,
216                  gaussians: &gs::core::GaussiansBuffer<GaussianPod>,
217                  _model_transform: &gs::core::ModelTransformBuffer,
218                  _gaussian_transform: &gs::core::GaussianTransformBuffer| {
219                  modifier_bundle.dispatch(encoder, gaussians.len() as u32);
220            }
221        };
222
223    #[allow(dead_code)]
224    struct Modifier<G: gs::core::GaussianPod>(gs::core::ComputeBundle, std::marker::PhantomData<G>);
225
226    impl<G: gs::core::GaussianPod> Modifier<G> {
227        #[allow(dead_code)]
228        fn new(
229            device: &wgpu::Device,
230            editor: &gs::Editor<G>,
231            pos_buffer: &wgpu::Buffer,
232            radius_buffer: &wgpu::Buffer,
233            selection_buffer: &gs::SelectionBuffer,
234        ) -> Self {
235            log::debug!("Creating custom modifier compute bundle");
236            let modifier_bundle = gs::core::ComputeBundleBuilder::new()
237                .label("Modifier")
238                .bind_group_layouts([
239                    &gs::MODIFIER_GAUSSIANS_BIND_GROUP_LAYOUT_DESCRIPTOR,
240                    &BIND_GROUP_LAYOUT_DESCRIPTOR,
241                ])
242                .resolver({
243                    let mut resolver =
244                        wesl::StandardResolver::new("examples/shader/custom_modify_selection");
245                    resolver.add_package(&gs::core::shader::PACKAGE);
246                    resolver.add_package(&gs::shader::PACKAGE);
247                    resolver
248                })
249                .main_shader("package::modifier".parse().unwrap())
250                .entry_point("main")
251                .wesl_compile_options(wesl::CompileOptions {
252                    features: GaussianPod::wesl_features(),
253                    ..Default::default()
254                })
255                .build(
256                    &device,
257                    [
258                        vec![
259                            editor.gaussians_buffer.buffer().as_entire_binding(),
260                            editor.model_transform_buffer.buffer().as_entire_binding(),
261                            editor
262                                .gaussian_transform_buffer
263                                .buffer()
264                                .as_entire_binding(),
265                        ],
266                        vec![
267                            pos_buffer.as_entire_binding(),
268                            radius_buffer.as_entire_binding(),
269                            selection_buffer.buffer().as_entire_binding(),
270                        ],
271                    ],
272                )
273                .map_err(|e| log::error!("{e}"))
274                .expect("modifier bundle");
275
276            Self(modifier_bundle, std::marker::PhantomData)
277        }
278    }
279
280    impl<G: gs::core::GaussianPod> gs::Modifier<G> for Modifier<G> {
281        fn apply(
282            &self,
283            _device: &wgpu::Device,
284            encoder: &mut wgpu::CommandEncoder,
285            gaussians: &gs::core::GaussiansBuffer<G>,
286            _model_transform: &gs::core::ModelTransformBuffer,
287            _gaussian_transform: &gs::core::GaussianTransformBuffer,
288        ) {
289            self.0.dispatch(encoder, gaussians.len() as u32);
290        }
291    }
292
293    log::debug!("Creating selection modifier");
294    let mut selection_modifier = gs::SelectionModifier::<GaussianPod, _>::new(
295        &device,
296        &editor.gaussians_buffer,
297        vec![cylinder_selection_bundle],
298        modifier_factory,
299        // Uncomment the following line to use modifier struct instead of closure
300        // |selection_buffer| {
301        //     Modifier::new(
302        //         &device,
303        //         &editor,
304        //         &pos_buffer,
305        //         &radius_buffer,
306        //         selection_buffer,
307        //     )
308        // },
309    );
310
311    log::debug!("Creating selection expression");
312    selection_modifier.selection_expr = gs::SelectionExpr::selection(
313        0,
314        vec![
315            selection_modifier.selection.bundles[0]
316                .create_bind_group(
317                    &device,
318                    1, // index 0 is the Gaussians buffer, so we use 1,
319                    [
320                        pos_buffer.as_entire_binding(),
321                        radius_buffer.as_entire_binding(),
322                    ],
323                )
324                .expect("selection expr bind group"),
325        ],
326    );
327
328    log::info!("Starting editing process");
329    let time = std::time::Instant::now();
330
331    log::debug!("Editing Gaussians");
332    let mut encoder = device.create_command_encoder(&wgpu::CommandEncoderDescriptor {
333        label: Some("Edit Encoder"),
334    });
335
336    editor.apply(
337        &device,
338        &mut encoder,
339        [&selection_modifier as &dyn gs::Modifier<GaussianPod>],
340    );
341
342    queue.submit(Some(encoder.finish()));
343
344    #[allow(unused_must_use)]
345    device.poll(wgpu::PollType::Wait);
346
347    log::info!("Editing process completed in {:?}", time.elapsed());
348
349    log::debug!("Downloading Gaussians");
350    let modified_gaussians = gs::core::Gaussians {
351        gaussians: editor
352            .gaussians_buffer
353            .download_gaussians(&device, &queue)
354            .await
355            .expect("gaussians download"),
356    };
357
358    log::debug!("Writing modified Gaussians to output file");
359    let output_file = std::fs::File::create(&args.output).expect("output file");
360    let mut writer = std::io::BufWriter::new(output_file);
361    modified_gaussians
362        .write_ply(&mut writer)
363        .expect("write modified Gaussians to output file");
364
365    log::info!("Modified Gaussians written to {}", args.output);
366}
Source

pub fn apply_with( &self, device: &Device, encoder: &mut CommandEncoder, gaussians: &GaussiansBuffer<G>, model_transform: &ModelTransformBuffer, gaussian_transform: &GaussianTransformBuffer, selection_expr: &SelectionExpr, selection_buffer: &SelectionBuffer, )

Apply the selection and the modifier with the given expression and buffer.

SelectionModifier::apply is the equivalent of applying this function with SelectionModifier::selection_expr and SelectionModifier::selection_buffer.

Source§

impl<G: GaussianPod> SelectionModifier<G, BasicModifier<G, WithSelection>>

Source

pub fn new_with_basic_modifier( device: &Device, gaussians_buffer: &GaussiansBuffer<G>, model_transform: &ModelTransformBuffer, gaussian_transform: &GaussianTransformBuffer, selection_bundles: Vec<ComputeBundle<()>>, ) -> Self

Create a new selection modifier with BasicModifier.

bundles are used for SelectionExpr::Unary, SelectionExpr::Binary, or SelectionExpr::Selection, they must have the same bind group 0 as the SelectionBundle::GAUSSIANS_BIND_GROUP_LAYOUT_DESCRIPTOR, see documentation of SelectionBundle for more details.

Examples found in repository?
examples/modify_selection.rs (lines 173-179)
125async fn main() {
126    env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("info")).init();
127
128    let args = Args::parse();
129    let model_path = &args.model;
130    let pos = Vec3::from_slice(&args.pos);
131    let rot = Quat::from_slice(&args.rot);
132    let scale = Vec3::from_slice(&args.scale);
133    let shape = match args.shape {
134        Shape::Sphere => gs::SelectionBundle::<GaussianPod>::create_sphere_bundle,
135        Shape::Box => gs::SelectionBundle::<GaussianPod>::create_box_bundle,
136    };
137    let repeat = args.repeat;
138    let offset = Vec3::from_slice(&args.offset);
139
140    log::debug!("Creating wgpu instance");
141    let instance = wgpu::Instance::new(&wgpu::InstanceDescriptor::default());
142
143    log::debug!("Requesting adapter");
144    let adapter = instance
145        .request_adapter(&wgpu::RequestAdapterOptions::default())
146        .await
147        .expect("adapter");
148
149    log::debug!("Requesting device");
150    let (device, queue) = adapter
151        .request_device(&wgpu::DeviceDescriptor {
152            label: Some("Device"),
153            required_features: wgpu::Features::empty(),
154            required_limits: adapter.limits(),
155            memory_hints: wgpu::MemoryHints::default(),
156            trace: wgpu::Trace::Off,
157        })
158        .await
159        .expect("device");
160
161    log::debug!("Creating gaussians");
162    let f = std::fs::File::open(model_path).expect("ply file");
163    let mut reader = std::io::BufReader::new(f);
164    let gaussians = gs::core::Gaussians::read_ply(&mut reader).expect("gaussians");
165
166    log::debug!("Creating editor");
167    let editor = gs::Editor::<GaussianPod>::new(&device, &gaussians);
168
169    log::debug!("Creating shape selection compute bundle");
170    let shape_selection = shape(&device);
171
172    log::debug!("Creating basic selection modifier");
173    let mut basic_selection_modifier = gs::SelectionModifier::new_with_basic_modifier(
174        &device,
175        &editor.gaussians_buffer,
176        &editor.model_transform_buffer,
177        &editor.gaussian_transform_buffer,
178        vec![shape_selection],
179    );
180
181    log::debug!("Configuring modifiers");
182    match args.override_rgb {
183        true => basic_selection_modifier
184            .modifier
185            .basic_color_modifiers_buffer
186            .update_with_override_rgb(
187                &queue,
188                Vec3::from_slice(&args.rgb_or_hsv),
189                args.alpha,
190                args.contrast,
191                args.exposure,
192                args.gamma,
193            ),
194        false => basic_selection_modifier
195            .modifier
196            .basic_color_modifiers_buffer
197            .update_with_hsv_modifiers(
198                &queue,
199                Vec3::from_slice(&args.rgb_or_hsv),
200                args.alpha,
201                args.contrast,
202                args.exposure,
203                args.gamma,
204            ),
205    }
206
207    log::debug!("Creating shape selection buffers");
208    let shape_selection_buffers = (0..repeat)
209        .map(|i| {
210            let offset_pos = pos + offset * i as f32;
211            let buffer = gs::InvTransformBuffer::new(&device);
212            buffer.update_with_scale_rot_pos(&queue, scale, rot, offset_pos);
213            buffer
214        })
215        .collect::<Vec<_>>();
216
217    log::debug!("Creating shape selection bind groups");
218    let shape_selection_bind_groups = shape_selection_buffers
219        .iter()
220        .map(|buffer| {
221            basic_selection_modifier.selection.bundles[0]
222                .create_bind_group(
223                    &device,
224                    // index 0 is the Gaussians buffer, so we use 1,
225                    // see docs of create_sphere_bundle or create_box_bundle
226                    1,
227                    [buffer.buffer().as_entire_binding()],
228                )
229                .expect("bind group")
230        })
231        .collect::<Vec<_>>();
232
233    log::debug!("Creating selection expression");
234    basic_selection_modifier.selection_expr = shape_selection_bind_groups.into_iter().fold(
235        gs::SelectionExpr::Identity,
236        |acc, bind_group| {
237            acc.union(gs::SelectionExpr::selection(
238                0, // the 0 here is the bundle index in the selection bundle
239                vec![bind_group],
240            ))
241        },
242    );
243
244    log::info!("Starting editing process");
245    let time = std::time::Instant::now();
246
247    log::debug!("Editing Gaussians");
248    let mut encoder = device.create_command_encoder(&wgpu::CommandEncoderDescriptor {
249        label: Some("Edit Encoder"),
250    });
251
252    editor.apply(
253        &device,
254        &mut encoder,
255        [&basic_selection_modifier as &dyn gs::Modifier<GaussianPod>],
256    );
257
258    queue.submit(Some(encoder.finish()));
259
260    #[allow(unused_must_use)]
261    device.poll(wgpu::PollType::Wait);
262
263    log::info!("Editing process completed in {:?}", time.elapsed());
264
265    log::debug!("Downloading Gaussians");
266    let modified_gaussians = gs::core::Gaussians {
267        gaussians: editor
268            .gaussians_buffer
269            .download_gaussians(&device, &queue)
270            .await
271            .expect("gaussians download"),
272    };
273
274    log::debug!("Writing modified Gaussians to output file");
275    let output_file = std::fs::File::create(&args.output).expect("output file");
276    let mut writer = std::io::BufWriter::new(output_file);
277    modified_gaussians
278        .write_ply(&mut writer)
279        .expect("write modified Gaussians to output file");
280
281    log::info!("Modified Gaussians written to {}", args.output);
282}

Trait Implementations§

Source§

impl<G: Debug + GaussianPod, M: Debug + Modifier<G>> Debug for SelectionModifier<G, M>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<G: GaussianPod, M: Modifier<G>> Modifier<G> for SelectionModifier<G, M>

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fn apply( &self, device: &Device, encoder: &mut CommandEncoder, gaussians: &GaussiansBuffer<G>, model_transform: &ModelTransformBuffer, gaussian_transform: &GaussianTransformBuffer, )

Apply the modifier to the Gaussians.

Auto Trait Implementations§

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impl<G, M> Freeze for SelectionModifier<G, M>
where M: Freeze,

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impl<G, M> !RefUnwindSafe for SelectionModifier<G, M>

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impl<G, M> Send for SelectionModifier<G, M>
where M: Send,

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impl<G, M> Sync for SelectionModifier<G, M>
where M: Sync,

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impl<G, M> Unpin for SelectionModifier<G, M>
where M: Unpin, G: Unpin,

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impl<G, M> !UnwindSafe for SelectionModifier<G, M>

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Downcast<T> for T

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fn downcast(&self) -> &T

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impl<T> From<T> for T

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fn from(t: T) -> T

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impl<T, U> Into<U> for T
where U: From<T>,

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Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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where U: Into<T>,

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type Error = Infallible

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Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

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Performs the conversion.
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where T: WasmNotSend + WasmNotSync,

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impl<T> WasmNotSync for T
where T: Sync,