Canvases in the 3D pass: textured quads depth-tested against the model (the model hides them, decals sit on their face), with the section cut applied; Canvas panel (opened after placing a canvas or by Edit Canvas in INSERT): opacity slider, width, angle, flip, visibility, delete

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01AS5Tn3xieewUSg3uxrMVdL

crates/engine/src/cmd/sketch_canvas.rs

@@ -17,7 +17,7 @@ pub static COMMANDS: &[CommandSpec] = &[
         .at("SKETCH", "INSERT")
         .icon("decal")
         .params("path | data; face: [x,y,z] on a planar face (the image is centred there); width?: mm; angle?: deg; opacity?: (default 1)"),
-    CommandSpec::new("canvas.edit", "Edit Canvas", edit_canvas).params("canvas: id or name; center?, width?, angle?: deg, opacity?, flip?, visible?, name?"),
+    CommandSpec::new("canvas.edit", "Edit Canvas", edit_canvas).at("SKETCH", "INSERT").icon("canvas").params("canvas: id or name; center?, width?, angle?: deg, opacity?, flip?, visible?, name?"),
     CommandSpec::new("canvas.calibrate", "Calibrate Canvas", calibrate)
         .params("canvas: id or name; a, b: two points on the canvas plane [x,y]; distance: their true distance (mm): scales the image about a"),
     CommandSpec::new("canvas.delete", "Delete Canvas", delete_canvas).params("canvas: id or name"),

crates/ui-egui/src/gpu.rs

@@ -81,6 +81,23 @@ impl GpuScene {
 
 pub type SceneSlot = Arc<Mutex<Option<GpuScene>>>;
 
+/// A reference image (canvas or decal): a textured quad, depth-tested against the model.
+#[derive(Clone)]
+pub struct GpuImage {
+    pub id: u64,
+    /// Changes when the pixels change (the texture is re-uploaded).
+    pub version: u64,
+    pub size: [u32; 2],
+    /// Straight RGBA8, `size[0] * size[1] * 4` bytes.
+    pub rgba: Arc<Vec<u8>>,
+    /// Bottom-left, bottom-right, top-right, top-left of the image.
+    pub corners: [[f32; 3]; 4],
+    pub opacity: f32,
+}
+
+/// Image vertex: position (3 × f32), uv (2 × f32), opacity (f32).
+const IMG_SIZE: usize = 24;
+
 /// Per-frame parameters.
 pub struct ViewportCallback {
     pub key: u64,
@@ -101,6 +118,8 @@ pub struct ViewportCallback {
     pub clip: [f32; 4],
     /// Colour of the inside of cut bodies (straight sRGBA, 0..1).
     pub cap: [f32; 4],
+    /// Canvases and decals.
+    pub images: Vec<GpuImage>,
 }
 
 struct Batch {
@@ -153,6 +172,13 @@ struct Resources {
     model: Batches,
     highlight: Batches,
     preview: Batches,
+    image: wgpu::RenderPipeline,
+    image_bgl: wgpu::BindGroupLayout,
+    sampler: wgpu::Sampler,
+    /// Textures by image id: (version, bind group).
+    textures: std::collections::HashMap<u64, (u64, wgpu::BindGroup)>,
+    /// This frame's quads: (image id, vertices).
+    quads: Vec<(u64, Batch)>,
 }
 
 const SHADER: &str = r#"
@@ -278,6 +304,35 @@ fn fs_line(i: LOut) -> @location(0) vec4<f32> {
     return out_color(i.c);
 }
 
+struct IOut {
+    @builtin(position) pos: vec4<f32>,
+    @location(0) uv: vec2<f32>,
+    @location(1) a: f32,
+    @location(2) wp: vec3<f32>,
+};
+
+@group(1) @binding(0) var img_t: texture_2d<f32>;
+@group(1) @binding(1) var img_s: sampler;
+
+@vertex
+fn vs_img(@location(0) p: vec3<f32>, @location(1) uv: vec2<f32>, @location(2) a: f32) -> IOut {
+    var o: IOut;
+    o.pos = u.vp * vec4<f32>(p, 1.0);
+    // Pulled toward the eye like lines, so a decal on a face is not lost in it.
+    o.pos.z = o.pos.z - u.screen.z * o.pos.w;
+    o.uv = uv;
+    o.a = a;
+    o.wp = p;
+    return o;
+}
+
+@fragment
+fn fs_img(i: IOut) -> @location(0) vec4<f32> {
+    if (clipped(i.wp)) { discard; }
+    let c = textureSample(img_t, img_s, i.uv);
+    return out_color(vec4<f32>(c.rgb, c.a * i.a));
+}
+
 /// Lines the section never cuts (the grid, highlights drawn on top).
 @fragment
 fn fs_line_all(i: LOut) -> @location(0) vec4<f32> {
@@ -365,7 +420,70 @@ impl Resources {
             })
         };
         let alpha = Some(wgpu::BlendState::ALPHA_BLENDING);
+        let image_bgl = device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
+            label: Some("sc_image"),
+            entries: &[
+                wgpu::BindGroupLayoutEntry {
+                    binding: 0,
+                    visibility: wgpu::ShaderStages::FRAGMENT,
+                    ty: wgpu::BindingType::Texture {
+                        sample_type: wgpu::TextureSampleType::Float { filterable: true },
+                        view_dimension: wgpu::TextureViewDimension::D2,
+                        multisampled: false,
+                    },
+                    count: None,
+                },
+                wgpu::BindGroupLayoutEntry {
+                    binding: 1,
+                    visibility: wgpu::ShaderStages::FRAGMENT,
+                    ty: wgpu::BindingType::Sampler(wgpu::SamplerBindingType::Filtering),
+                    count: None,
+                },
+            ],
+        });
+        let image_layout = device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
+            label: Some("sc_image"),
+            bind_group_layouts: &[Some(&bgl), Some(&image_bgl)],
+            immediate_size: 0,
+        });
+        const IA: [wgpu::VertexAttribute; 3] = wgpu::vertex_attr_array![0 => Float32x3, 1 => Float32x2, 2 => Float32];
+        let image = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
+            label: Some("sc_image"),
+            layout: Some(&image_layout),
+            vertex: wgpu::VertexState {
+                module: &module,
+                entry_point: Some("vs_img"),
+                buffers: &[Some(wgpu::VertexBufferLayout {
+                    array_stride: IMG_SIZE as u64,
+                    step_mode: wgpu::VertexStepMode::Vertex,
+                    attributes: &IA,
+                })],
+                compilation_options: Default::default(),
+            },
+            primitive: wgpu::PrimitiveState { topology: wgpu::PrimitiveTopology::TriangleList, ..Default::default() },
+            depth_stencil: depth(wgpu::CompareFunction::LessEqual, false),
+            multisample: wgpu::MultisampleState { count: t.samples.max(1), mask: !0, alpha_to_coverage_enabled: false },
+            fragment: Some(wgpu::FragmentState {
+                module: &module,
+                entry_point: Some("fs_img"),
+                targets: &[Some(wgpu::ColorTargetState { format: t.format, blend: alpha, write_mask: wgpu::ColorWrites::ALL })],
+                compilation_options: Default::default(),
+            }),
+            multiview_mask: None,
+            cache: None,
+        });
+        let sampler = device.create_sampler(&wgpu::SamplerDescriptor {
+            label: Some("sc_image"),
+            mag_filter: wgpu::FilterMode::Linear,
+            min_filter: wgpu::FilterMode::Linear,
+            ..Default::default()
+        });
         Resources {
+            image,
+            image_bgl,
+            sampler,
+            textures: Default::default(),
+            quads: Vec::new(),
             tri: pipeline("sc_tris", "vs_tri", "fs_solid", tri_layout(), depth(wgpu::CompareFunction::Less, true), None),
             tri_hl: pipeline("sc_tris_hl", "vs_tri", "fs_tri", tri_layout(), depth(wgpu::CompareFunction::LessEqual, false), alpha),
             trans: pipeline("sc_trans", "vs_tri", "fs_tri", tri_layout(), depth(wgpu::CompareFunction::LessEqual, false), alpha),
@@ -419,6 +537,55 @@ impl egui_wgpu::CallbackTrait for ViewportCallback {
         res.highlight.take(device, self.hl_key, &self.hl_slot);
         res.preview.take(device, self.pv_key, &self.pv_slot);
         queue.write_buffer(&res.uniform, 0, &uniform_bytes(self, self.size_px[0], self.size_px[1], res.linear_out));
+        // Images: upload new or changed textures, drop removed ones, rebuild the quads.
+        res.textures.retain(|id, _| self.images.iter().any(|i| i.id == *id));
+        res.quads.clear();
+        for img in &self.images {
+            let [w, h] = img.size;
+            if w == 0 || h == 0 || img.rgba.len() != (w as usize) * (h as usize) * 4 {
+                continue;
+            }
+            if res.textures.get(&img.id).is_none_or(|t| t.0 != img.version) {
+                let size = wgpu::Extent3d { width: w, height: h, depth_or_array_layers: 1 };
+                let tex = device.create_texture(&wgpu::TextureDescriptor {
+                    label: Some("sc_image"),
+                    size,
+                    mip_level_count: 1,
+                    sample_count: 1,
+                    dimension: wgpu::TextureDimension::D2,
+                    format: wgpu::TextureFormat::Rgba8Unorm,
+                    usage: wgpu::TextureUsages::TEXTURE_BINDING | wgpu::TextureUsages::COPY_DST,
+                    view_formats: &[],
+                });
+                queue.write_texture(
+                    wgpu::TexelCopyTextureInfo { texture: &tex, mip_level: 0, origin: wgpu::Origin3d::ZERO, aspect: wgpu::TextureAspect::All },
+                    &img.rgba,
+                    wgpu::TexelCopyBufferLayout { offset: 0, bytes_per_row: Some(4 * w), rows_per_image: Some(h) },
+                    size,
+                );
+                let view = tex.create_view(&Default::default());
+                let bind = device.create_bind_group(&wgpu::BindGroupDescriptor {
+                    label: Some("sc_image"),
+                    layout: &res.image_bgl,
+                    entries: &[
+                        wgpu::BindGroupEntry { binding: 0, resource: wgpu::BindingResource::TextureView(&view) },
+                        wgpu::BindGroupEntry { binding: 1, resource: wgpu::BindingResource::Sampler(&res.sampler) },
+                    ],
+                });
+                res.textures.insert(img.id, (img.version, bind));
+            }
+            let c = img.corners;
+            let uv = [[0.0_f32, 1.0], [1.0, 1.0], [1.0, 0.0], [0.0, 0.0]];
+            let mut bytes = Vec::with_capacity(6 * IMG_SIZE);
+            for k in [0, 1, 2, 0, 2, 3] {
+                for v in c[k].iter().chain(&uv[k]).chain(std::iter::once(&img.opacity)) {
+                    bytes.extend_from_slice(&v.to_le_bytes());
+                }
+            }
+            if let Some(b) = upload(device, "sc_image_quad", &bytes, IMG_SIZE) {
+                res.quads.push((img.id, b));
+            }
+        }
         Vec::new()
     }
 
@@ -452,6 +619,14 @@ impl egui_wgpu::CallbackTrait for ViewportCallback {
         lines(pass, &res.line, &m.lines);
         lines(pass, &res.line, &pv.lines);
         lines(pass, &res.line, &h.lines);
+        for (id, q) in &res.quads {
+            if let Some((_, bind)) = res.textures.get(id) {
+                pass.set_pipeline(&res.image);
+                pass.set_bind_group(1, bind, &[]);
+                pass.set_vertex_buffer(0, q.buffer.slice(..));
+                pass.draw(0..q.count, 0..1);
+            }
+        }
         tris(pass, &res.ghost, &pv.ghost);
         tris(pass, &res.trans, &m.trans);
         tris(pass, &res.trans, &h.trans);

crates/ui-egui/src/lib.rs

@@ -317,7 +317,7 @@ impl SolveApp {
             }
             return;
         }
-        if !sketch_tools::pick_image(self, id) {
+        if !sketch_tools::start_hook(self, id) {
             return;
         }
         if id == "ChangeParameterCommand" {

crates/ui-egui/src/ref_images.rs

@@ -1,55 +1,112 @@
-//! Canvases and decals: the design's reference images, drawn on their planes under the sketch
-//! overlays.
+//! Canvases and decals: the design's reference images. With the GPU viewport they are textured
+//! quads in the 3D pass (the model hides them); the CPU viewport draws them over its image.
 
 use std::cell::RefCell;
 use std::collections::HashMap;
+use std::sync::Arc;
 
 use egui::{Color32, Mesh, Shape, TextureHandle, TextureId, pos2};
+use solvecraft_engine::doc::canvas::Canvas;
 use solvecraft_engine::geom::Vec2;
 
 use crate::SolveApp;
+use crate::gpu::GpuImage;
 use crate::viewport::Proj;
 
 /// Largest texture side; bigger images are scaled down for display.
 const MAX_SIDE: u32 = 2048;
-/// Grid cells per side, so perspective views bend the image only slightly.
+/// Grid cells per side, so perspective views bend the image only slightly (CPU path).
 const CELLS: usize = 8;
 
+/// Decoded pixels: (data length they came from, version, size, RGBA).
+type Decoded = (usize, u64, [u32; 2], Arc<Vec<u8>>);
+
 thread_local! {
-    /// Textures by canvas id, with the length of the data they were made from.
-    static TEX: RefCell<HashMap<u64, (usize, Option<TextureHandle>)>> = RefCell::new(HashMap::new());
+    static PIXELS: RefCell<HashMap<u64, Option<Decoded>>> = RefCell::new(HashMap::new());
+    /// egui textures for the CPU path, by canvas id, with the version they hold.
+    static TEX: RefCell<HashMap<u64, (u64, TextureHandle)>> = RefCell::new(HashMap::new());
+    static VERSION: std::cell::Cell<u64> = const { std::cell::Cell::new(0) };
 }
 
-fn texture(ctx: &egui::Context, id: u64, data: &str, bytes: impl FnOnce() -> Option<Vec<u8>>) -> Option<TextureId> {
-    TEX.with(|t| {
-        let mut t = t.borrow_mut();
-        if let Some((len, h)) = t.get(&id)
-            && *len == data.len()
+fn pixels(c: &Canvas) -> Option<Decoded> {
+    PIXELS.with(|m| {
+        let mut m = m.borrow_mut();
+        if let Some(d) = m.get(&c.id)
+            && d.as_ref().is_none_or(|d| d.0 == c.data.len())
         {
-            return h.as_ref().map(|h| h.id());
+            return d.clone();
         }
-        let img = bytes().and_then(|b| image::load_from_memory(&b).ok()).map(|i| {
+        let d = c.bytes().and_then(|b| image::load_from_memory(&b).ok()).map(|i| {
             let i = if i.width() > MAX_SIDE || i.height() > MAX_SIDE { i.thumbnail(MAX_SIDE, MAX_SIDE) } else { i };
             let rgba = i.to_rgba8();
-            egui::ColorImage::from_rgba_unmultiplied([rgba.width() as usize, rgba.height() as usize], rgba.as_raw())
+            let v = VERSION.with(|v| {
+                v.set(v.get() + 1);
+                v.get()
+            });
+            (c.data.len(), v, [rgba.width(), rgba.height()], Arc::new(rgba.into_raw()))
         });
-        let h = img.map(|img| ctx.load_texture(format!("sc_canvas_{id}"), img, egui::TextureOptions::LINEAR));
-        let out = h.as_ref().map(|h| h.id());
-        t.insert(id, (data.len(), h));
-        out
+        m.insert(c.id, d.clone());
+        d
     })
 }
 
+fn forget_removed(app: &SolveApp) {
+    let doc = &app.session.doc;
+    PIXELS.with(|m| m.borrow_mut().retain(|id, _| doc.canvases.iter().any(|c| c.id == *id)));
+    TEX.with(|t| t.borrow_mut().retain(|id, _| doc.canvases.iter().any(|c| c.id == *id)));
+}
+
+/// The visible canvases as GPU quads.
+pub fn gpu_images(app: &SolveApp) -> Vec<GpuImage> {
+    forget_removed(app);
+    let doc = &app.session.doc;
+    if doc.canvases.is_empty() {
+        return Vec::new();
+    }
+    let (vals, _) = doc.param_values();
+    doc.canvases
+        .iter()
+        .filter(|c| c.visible && c.opacity > 0.0)
+        .filter_map(|c| {
+            let plane = doc.resolve_plane(&vals, &c.plane, 0).ok()?;
+            let (_, version, size, rgba) = pixels(c)?;
+            let corners = c.world_corners(&plane).map(|p| [p.x as f32, p.y as f32, p.z as f32]);
+            Some(GpuImage { id: c.id, version, size, rgba, corners, opacity: c.opacity.clamp(0.0, 1.0) as f32 })
+        })
+        .collect()
+}
+
+fn texture(ctx: &egui::Context, c: &Canvas) -> Option<TextureId> {
+    let (_, version, [w, h], rgba) = pixels(c)?;
+    TEX.with(|t| {
+        let mut t = t.borrow_mut();
+        if let Some((v, h)) = t.get(&c.id)
+            && *v == version
+        {
+            return Some(h.id());
+        }
+        let img = egui::ColorImage::from_rgba_unmultiplied([w as usize, h as usize], &rgba);
+        let handle = ctx.load_texture(format!("sc_canvas_{}", c.id), img, egui::TextureOptions::LINEAR);
+        let id = handle.id();
+        t.insert(c.id, (version, handle));
+        Some(id)
+    })
+}
+
+/// CPU viewport only: the images over the rendered model.
 pub fn show(app: &SolveApp, ui: &egui::Ui, painter: &egui::Painter, proj: &Proj) {
+    if app.viewport.gpu.is_some() {
+        return;
+    }
+    forget_removed(app);
     let doc = &app.session.doc;
     if doc.canvases.is_empty() {
-        TEX.with(|t| t.borrow_mut().clear());
         return;
     }
     let (vals, _) = doc.param_values();
     for c in doc.canvases.iter().filter(|c| c.visible) {
         let Ok(plane) = doc.resolve_plane(&vals, &c.plane, 0) else { continue };
-        let Some(tex) = texture(ui.ctx(), c.id, &c.data, || c.bytes()) else { continue };
+        let Some(tex) = texture(ui.ctx(), c) else { continue };
         let [bl, br, _, tl] = c.corners();
         let (u, v) = (br - bl, tl - bl);
         let tint = Color32::from_white_alpha((c.opacity.clamp(0.0, 1.0) * 255.0) as u8);
@@ -80,5 +137,4 @@ pub fn show(app: &SolveApp, ui: &egui::Ui, painter: &egui::Painter, proj: &Proj)
         }
         painter.add(Shape::mesh(mesh));
     }
-    TEX.with(|t| t.borrow_mut().retain(|id, _| doc.canvases.iter().any(|c| c.id == *id)));
 }

crates/ui-egui/src/sketch_tools.rs

@@ -28,10 +28,20 @@ thread_local! {
     static COMBS: RefCell<Vec<Vec<[Vec3; 2]>>> = const { RefCell::new(Vec::new()) };
     /// The image file a Canvas or Decal tool places.
     static IMAGE: RefCell<Option<String>> = const { RefCell::new(None) };
+    /// The canvas whose panel is open.
+    static CANVAS_PANEL: Cell<Option<u64>> = const { Cell::new(None) };
+    /// The opacity slider while it is dragged: (canvas, value).
+    static OPACITY: Cell<Option<(u64, f64)>> = const { Cell::new(None) };
 }
 
-/// Canvas and Decal start by asking for the image; false when none was chosen.
-pub fn pick_image(app: &SolveApp, id: &str) -> bool {
+/// Commands that start with a step of their own: Canvas and Decal ask for the image first,
+/// Edit Canvas opens the canvas panel. False when the command should not go on.
+pub fn start_hook(app: &SolveApp, id: &str) -> bool {
+    if id == "canvas.edit" {
+        let first = app.session.doc.canvases.first().map(|c| c.id);
+        CANVAS_PANEL.with(|c| c.set(first));
+        return false;
+    }
     if !matches!(id, "FusionAddCanvasCommand" | "FusionAddEditDecalCommand") {
         return true;
     }
@@ -41,6 +51,73 @@ pub fn pick_image(app: &SolveApp, id: &str) -> bool {
     ok
 }
 
+/// The canvas panel: opacity, size, angle, flip, visibility of one canvas.
+fn canvas_panel(app: &mut SolveApp, ctx: &egui::Context) {
+    let Some(id) = CANVAS_PANEL.with(|c| c.get()) else { return };
+    let Some(c) = app.session.doc.canvases.iter().find(|c| c.id == id).cloned() else {
+        CANVAS_PANEL.with(|c| c.set(None));
+        return;
+    };
+    let ids: Vec<(u64, String)> = app.session.doc.canvases.iter().map(|c| (c.id, c.name.clone())).collect();
+    let mut open = true;
+    let mut edit: Option<Value> = None;
+    let mut delete = false;
+    egui::Window::new("Canvas").open(&mut open).collapsible(false).resizable(false).default_pos(egui::pos2(320.0, 160.0)).show(ctx, |ui| {
+        egui::ComboBox::from_id_salt("sc_canvas_pick").selected_text(&c.name).show_ui(ui, |ui| {
+            for (cid, name) in &ids {
+                if ui.selectable_label(*cid == id, name).clicked() {
+                    CANVAS_PANEL.with(|p| p.set(Some(*cid)));
+                }
+            }
+        });
+        egui::Grid::new("sc_canvas_grid").num_columns(2).show(ui, |ui| {
+            ui.label("Opacity");
+            let mut o = OPACITY.with(|v| v.get()).filter(|v| v.0 == id).map(|v| v.1).unwrap_or(c.opacity);
+            let r = ui.add(egui::Slider::new(&mut o, 0.0..=1.0).fixed_decimals(2));
+            OPACITY.with(|v| v.set(Some((id, o))));
+            if r.drag_stopped() || (r.changed() && !r.dragged()) {
+                edit = Some(json!({"canvas": id, "opacity": o}));
+            }
+            ui.end_row();
+            ui.label("Width");
+            let mut w = c.width;
+            if ui.add(egui::DragValue::new(&mut w).range(0.001..=1e6).suffix(" mm").speed(c.width * 0.005)).changed() {
+                edit = Some(json!({"canvas": id, "width": w}));
+            }
+            ui.end_row();
+            ui.label("Angle");
+            let mut a = c.angle.to_degrees();
+            if ui.add(egui::DragValue::new(&mut a).suffix("°").speed(0.5)).changed() {
+                edit = Some(json!({"canvas": id, "angle": a}));
+            }
+            ui.end_row();
+            let mut flip = c.flip;
+            if ui.checkbox(&mut flip, "Flip").changed() {
+                edit = Some(json!({"canvas": id, "flip": flip}));
+            }
+            let mut vis = c.visible;
+            if ui.checkbox(&mut vis, "Visible").changed() {
+                edit = Some(json!({"canvas": id, "visible": vis}));
+            }
+            ui.end_row();
+        });
+        if ui.button("Delete canvas").clicked() {
+            delete = true;
+        }
+    });
+    if let Some(p) = edit {
+        let _ = app.run("canvas.edit", p);
+        OPACITY.with(|v| v.set(None));
+    }
+    if delete {
+        let _ = app.run("canvas.delete", json!({"canvas": id}));
+        open = false;
+    }
+    if !open {
+        CANVAS_PANEL.with(|c| c.set(None));
+    }
+}
+
 fn v3(v: &Value) -> Option<Vec3> {
     Some(Vec3::new(v.get(0)?.as_f64()?, v.get(1)?.as_f64()?, v.get(2)?.as_f64()?))
 }
@@ -428,9 +505,10 @@ pub fn on_click(app: &mut SolveApp, tool: &mut Tool, proj: &Proj, pos: Pos2) {
             } else {
                 json!({"path": path, "plane": plane, "at": [at.x, at.y, at.z]})
             };
-            if app.run(cmd, p).is_ok() {
+            if let Ok(v) = app.run(cmd, p) {
                 IMAGE.with(|i| *i.borrow_mut() = None);
                 app.tool = None;
+                CANVAS_PANEL.with(|c| c.set(v["canvas"].as_u64()));
             }
         }
         Mode::ModelRef => {
@@ -849,6 +927,7 @@ pub fn show(app: &mut SolveApp, ui: &egui::Ui, painter: &egui::Painter, proj: &P
     snap_hint(app, painter, proj);
     combs(app, painter, proj);
     text_entry(app, ui.ctx());
+    canvas_panel(app, ui.ctx());
 }
 
 /// The text-entry box for a placed text.

crates/ui-egui/src/viewport.rs

@@ -1105,6 +1105,7 @@ pub fn show(app: &mut SolveApp, ui: &mut egui::Ui) {
             view_proj: proj.vp.to_f32(),
             back: proj.cam.back().to_f32(),
             size_px: [rect.width() * ppp, rect.height() * ppp],
+            images: crate::ref_images::gpu_images(app),
         };
         painter.add(egui_wgpu::Callback::new_paint_callback(rect, cb));
     } else {