forked from 1b-agent/opencadstudio-upstream
HakanandClaude Opus 4.7
e9488f99dd
LWDISPLAY (Show Lineweight) flipping the toggle no longer triggers a full retessellate. `render_style_for` always bakes the entity's resolved (layer- inherited) lineweight, and the wire shader reads `Uniforms.lwdisplay_enable` to either honour the per-vertex half_width or collapse the quad to a 1 px line. Side effect: PDF export now uses the real lineweight regardless of LWDISPLAY, matching AutoCAD's plot semantics (LWDISPLAY only affects screen render). Co-Authored-By: Claude Opus 4.7 <[email protected]>
541 lines
20 KiB
Rust
541 lines
20 KiB
Rust
// GPU rendering primitives, shader::Program / shader::Primitive impls,
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// and entity render-style helpers for the Scene.
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use acadrust::tables::LineType;
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use acadrust::types::{Color as AcadColor, LineWeight};
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use acadrust::{CadDocument, EntityType, Handle};
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use glam::Mat4;
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use iced::mouse;
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use iced::widget::shader::{self, Viewport};
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use iced::{Rectangle, Size};
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use std::sync::Arc;
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use super::pipeline::viewcube::{hover_id, VIEWCUBE_PX};
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use super::pipeline::Pipeline;
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use super::tessellate;
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use super::{HatchModel, ImageModel, MeshLodSet, Scene, Uniforms, WireModel};
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// ── PaperViewportPipeline / PaperViewportPrimitive ────────────────────────
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//
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// Newtype wrappers around Pipeline / Primitive so that the active-MSPACE
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// viewport widget gets its own Iced storage entry (keyed by TypeId of the
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// Pipeline type). This prevents the shared-pipeline prepare() overwrite
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// that occurs when PaperSheet and the viewport widget both use `Pipeline`.
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/// Dedicated pipeline for the MSPACE active-viewport shader widget.
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pub struct PaperViewportPipeline(pub(super) Pipeline);
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impl iced::widget::shader::Pipeline for PaperViewportPipeline {
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fn new(
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device: &iced::wgpu::Device,
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queue: &iced::wgpu::Queue,
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format: iced::wgpu::TextureFormat,
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) -> Self {
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Self(Pipeline::new(device, queue, format))
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}
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}
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/// Primitive returned by `PaperViewportPane`; delegates everything to the
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/// inner `Primitive` via the dedicated `PaperViewportPipeline`.
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#[derive(Debug)]
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pub struct PaperViewportPrimitive(pub(super) Primitive);
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impl shader::Primitive for PaperViewportPrimitive {
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type Pipeline = PaperViewportPipeline;
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fn prepare(
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&self,
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pipeline: &mut PaperViewportPipeline,
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device: &iced::wgpu::Device,
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queue: &iced::wgpu::Queue,
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bounds: &Rectangle,
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viewport: &Viewport,
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) {
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self.0
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.prepare(&mut pipeline.0, device, queue, bounds, viewport);
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}
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fn render(
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&self,
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pipeline: &PaperViewportPipeline,
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encoder: &mut iced::wgpu::CommandEncoder,
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target: &iced::wgpu::TextureView,
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clip: &Rectangle<u32>,
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) {
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self.0.render(&pipeline.0, encoder, target, clip);
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}
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}
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// ── Camera hover state (shader::Program::State) ───────────────────────────
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#[derive(Clone, Default)]
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pub struct CameraState {
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pub hover_region: Option<usize>,
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}
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// ── GPU primitive ─────────────────────────────────────────────────────────
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#[derive(Debug)]
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pub struct Primitive {
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pub(super) wires: Arc<Vec<WireModel>>,
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/// 3DFACE entity wires — separated so they are uploaded to the dedicated
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/// face3d pipeline (fill + batched edges) instead of N individual WireGpu.
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pub(super) face3d_wires: Arc<Vec<WireModel>>,
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pub(super) hatches: Arc<Vec<HatchModel>>,
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/// Wipeout fills — rendered in a separate pass AFTER wires.
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pub(super) wipeout_hatches: Arc<Vec<HatchModel>>,
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pub(super) images: Arc<Vec<ImageModel>>,
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pub(super) meshes: Arc<Vec<MeshLodSet>>,
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pub(super) uniforms: Uniforms,
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/// Camera rotation matrix derived from the quaternion.
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/// Used by the ViewCube pipeline — no gimbal lock.
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pub(super) cam_rotation: Mat4,
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pub(super) hover_region: Option<usize>,
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/// Background color used to clear the MSAA buffer at the start of each frame.
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pub(super) bg_color: [f32; 4],
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pub(super) show_viewcube: bool,
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/// Header.fill_mode (FILLMODE): when false, hatch / wipeout / face3d-fill
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/// uploads short-circuit so the renderer draws only wireframe.
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pub(super) fill_mode: bool,
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pub(super) geometry_epoch: u64,
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/// Camera generation captured when this Primitive was assembled. Paired
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/// with `geometry_epoch` so the wire buffers re-upload when the view
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/// changes (frustum culling produces a different wire list).
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pub(super) camera_generation: u64,
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}
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// ── shader::Primitive impl ────────────────────────────────────────────────
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impl shader::Primitive for Primitive {
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type Pipeline = Pipeline;
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fn prepare(
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&self,
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pipeline: &mut Pipeline,
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device: &iced::wgpu::Device,
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queue: &iced::wgpu::Queue,
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bounds: &Rectangle,
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viewport: &Viewport,
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) {
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let phys = viewport.physical_size();
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let full_size = Size::new(phys.width, phys.height);
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// MSAA and depth textures are sized to the shader widget's clip bounds,
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// not the full surface — so the MSAA resolve can't overwrite other widgets.
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let scale = viewport.scale_factor() as f32;
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let clip_size = Size::new(
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(bounds.width * scale).ceil() as u32,
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(bounds.height * scale).ceil() as u32,
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);
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pipeline.ensure_depth_texture(device, clip_size);
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pipeline.viewcube.ensure_depth_texture(device, full_size);
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pipeline.upload_uniforms(queue, &self.uniforms);
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let cur_key = (self.geometry_epoch, self.camera_generation);
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let fill_mode = self.fill_mode;
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if cur_key != pipeline.cached_epoch {
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// Static buffers (hatches/images/meshes) only need refresh on a
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// real geometry change, not on every camera tick.
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if self.geometry_epoch != pipeline.cached_epoch.0 {
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if fill_mode {
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pipeline.upload_hatches(device, &self.hatches[..]);
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pipeline.upload_wipeouts(device, &self.wipeout_hatches[..]);
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} else {
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pipeline.upload_hatches(device, &[]);
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pipeline.upload_wipeouts(device, &[]);
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}
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pipeline.upload_images(device, queue, &self.images[..]);
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pipeline.upload_meshes(device, &self.meshes[..]);
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}
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// Wires re-upload on every camera change because the visible
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// subset shifts under frustum culling.
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pipeline.upload_wires(device, &self.wires[..]);
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if fill_mode {
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pipeline.upload_face3d(device, &self.face3d_wires[..], &self.wires[..]);
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} else {
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// Edges still need to draw, but no fill_tris are forwarded.
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pipeline.upload_face3d(device, &self.face3d_wires[..], &[]);
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}
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pipeline.cached_epoch = cur_key;
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}
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pipeline.compute_wire_scissors(self.uniforms.view_proj, clip_size.width, clip_size.height);
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pipeline.compute_wipeout_scissors(self.uniforms.view_proj, clip_size.width, clip_size.height);
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pipeline.compute_image_scissors(self.uniforms.view_proj, clip_size.width, clip_size.height);
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pipeline.compute_hatch_lod(queue, self.uniforms.view_proj, clip_size.width, clip_size.height);
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pipeline.compute_wipeout_lod(self.uniforms.view_proj, clip_size.width, clip_size.height);
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pipeline.compute_mesh_lod(self.uniforms.view_proj, clip_size.width, clip_size.height);
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if self.show_viewcube {
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pipeline.viewcube.upload(
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queue,
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self.cam_rotation,
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bounds.width as u32,
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bounds.height as u32,
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self.hover_region,
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);
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}
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}
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fn render(
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&self,
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pipeline: &Pipeline,
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encoder: &mut iced::wgpu::CommandEncoder,
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target: &iced::wgpu::TextureView,
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clip: &Rectangle<u32>,
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) {
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pipeline.render(encoder, target, *clip, self.bg_color);
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if self.show_viewcube {
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pipeline.viewcube.render(encoder, target, *clip);
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}
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}
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}
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// ── Render-style helpers (impl Scene) ────────────────────────────────────
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impl Scene {
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/// Returns (entity_color, pattern_length, pattern, line_weight_px, aci).
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pub(super) fn render_style(&self, e: &EntityType) -> ([f32; 4], f32, [f32; 8], f32, u8) {
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let (color, pl, pat, lw, aci) = render_style_for(&self.document, e);
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let bg = if self.current_layout == "Model" {
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self.bg_color
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} else {
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self.paper_bg_color
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};
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(adapt_to_bg(color, bg), pl, pat, lw, aci)
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}
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}
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// ── Document-only render-style helpers (no &self, safe to call from parallel contexts) ──
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/// Resolves the effective linetype name for an entity, falling back to the
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/// layer's linetype when the entity's own linetype is "ByLayer".
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pub(super) fn linetype_name_for<'a>(document: &'a CadDocument, e: &'a EntityType) -> &'a str {
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let elt = &e.common().linetype;
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if elt.is_empty() || elt.eq_ignore_ascii_case("bylayer") {
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document
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.layers
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.get(&e.common().layer)
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.map(|l| l.line_type.as_str())
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.unwrap_or("Continuous")
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} else {
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elt.as_str()
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}
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}
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/// Returns `(entity_color, pattern_length, pattern, line_weight_px, aci)` for
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/// an entity, resolving ByLayer color and linetype from the document.
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pub(super) fn render_style_for(
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document: &CadDocument,
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e: &EntityType,
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) -> ([f32; 4], f32, [f32; 8], f32, u8) {
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let layer_name = &e.common().layer;
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let (entity_color, aci) = {
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let ec = &e.common().color;
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let resolved = if *ec == AcadColor::ByLayer {
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document
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.layers
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.get(layer_name)
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.map(|l| &l.color)
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.unwrap_or(&AcadColor::WHITE)
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} else {
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ec
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};
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let aci = match resolved {
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AcadColor::Index(i) => *i,
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_ => 0,
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};
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let [r, g, b, _] = tessellate::aci_to_rgba(resolved);
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let alpha = 1.0 - e.common().transparency.as_percent() as f32;
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([r, g, b, alpha], aci)
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};
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let lt_name = linetype_name_for(document, e);
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// Effective scale = global LTSCALE × per-entity scale (both default to 1.0).
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let lt_scale = document.header.linetype_scale as f32 * e.common().linetype_scale as f32;
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let (pattern_length, pattern) = resolve_pattern(&document.line_types, lt_name, lt_scale);
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let line_weight_px = {
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// LWDISPLAY is no longer evaluated here — the toggle is now applied in
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// the wire shader via `Uniforms.lwdisplay_enable`, so we always bake the
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// entity's resolved (layer-inherited) weight. Toggling lineweight
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// visibility costs only a uniform write, not a retessellate.
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let ew = &e.common().line_weight;
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let resolved = match ew {
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LineWeight::ByLayer | LineWeight::ByBlock | LineWeight::Default => document
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.layers
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.get(layer_name)
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.map(|l| &l.line_weight)
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.unwrap_or(&LineWeight::Default),
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_ => ew,
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};
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const MM_TO_PX: f32 = 96.0 / 25.4;
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resolved
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.millimeters()
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.map(|mm| (mm as f32 * MM_TO_PX).max(1.0))
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.unwrap_or(1.0)
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};
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(entity_color, pattern_length, pattern, line_weight_px, aci)
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}
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/// Like `render_style_for` but resolves ByBlock properties by inheriting from
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/// the INSERT entity's already-resolved style. Call this for exploded block
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/// sub-entities so that ByBlock color/linetype/lineweight propagate correctly.
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pub(super) fn render_style_for_block_sub(
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document: &CadDocument,
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e: &EntityType,
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insert_color: [f32; 4],
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insert_pat_len: f32,
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insert_pat: [f32; 8],
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insert_lw_px: f32,
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) -> ([f32; 4], f32, [f32; 8], f32, u8) {
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let (color, pat_len, pat, lw_px, aci) = render_style_for(document, e);
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let common = e.common();
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let final_color = if common.color == AcadColor::ByBlock {
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insert_color
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} else {
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color
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};
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let (final_pat_len, final_pat) = if common.linetype.eq_ignore_ascii_case("byblock") {
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(insert_pat_len, insert_pat)
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} else {
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(pat_len, pat)
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};
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let final_lw = if matches!(common.line_weight, LineWeight::ByBlock) {
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insert_lw_px
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} else {
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lw_px
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};
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(final_color, final_pat_len, final_pat, final_lw, aci)
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}
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/// Adapt white→black or black→white based on background luminance.
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/// White entities on light backgrounds become black, black entities on dark
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/// backgrounds become white. All other colors pass through unchanged.
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pub(super) fn adapt_to_bg(color: [f32; 4], bg: [f32; 4]) -> [f32; 4] {
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let lum = 0.299 * bg[0] + 0.587 * bg[1] + 0.114 * bg[2];
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let is_white = color[0] > 0.95 && color[1] > 0.95 && color[2] > 0.95;
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let is_black = color[0] < 0.05 && color[1] < 0.05 && color[2] < 0.05;
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if is_white && lum > 0.5 {
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[0.0, 0.0, 0.0, color[3]]
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} else if is_black && lum <= 0.5 {
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[1.0, 1.0, 1.0, color[3]]
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} else {
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color
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}
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}
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// ── Primitive builder helpers (called by ViewportPane's shader::Program impl) ──
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impl Scene {
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/// Build a full-scene Primitive for the model or paper view (the camera
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/// stored in `self.camera` is used as-is).
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pub(super) fn build_primitive(
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&self,
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hover_region: Option<usize>,
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bounds: Rectangle,
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show_viewcube: bool,
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) -> Primitive {
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let cam = self.camera.borrow();
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self.selection.borrow_mut().vp_size = (bounds.width, bounds.height);
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// Record the active widget's aspect so view_world_aabb() can compute
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// a correct culling rectangle before entity_wires_arc() runs.
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if bounds.height > 0.0 {
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self.set_render_aspect(bounds.width / bounds.height);
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self.set_render_pixel_scale(bounds.width, bounds.height);
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}
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let entity_arc = self.entity_wires_arc();
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let (face3d_wires, other_wires) = split_face3d_wires(&entity_arc, &self.document);
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let all_wires = if self.interim_wire.is_none() && self.preview_wires.is_empty() {
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Arc::new(other_wires)
|
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} else {
|
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let mut v = other_wires;
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if let Some(iw) = &self.interim_wire {
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v.push(iw.clone());
|
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}
|
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v.extend(self.preview_wires.iter().cloned());
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Arc::new(v)
|
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};
|
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|
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let bg_color = if self.current_layout == "Model" {
|
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self.bg_color
|
||
} else {
|
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self.paper_bg_color
|
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};
|
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Primitive {
|
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wires: all_wires,
|
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face3d_wires: Arc::new(face3d_wires),
|
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hatches: self.hatch_models_arc(),
|
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wipeout_hatches: self.wipeout_models_arc(),
|
||
images: self.images_arc(),
|
||
meshes: self.meshes_arc(),
|
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uniforms: Uniforms::new(&cam, bounds, self.document.header.lineweight_display),
|
||
cam_rotation: cam.view_rotation_mat(),
|
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hover_region,
|
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bg_color,
|
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show_viewcube,
|
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fill_mode: self.document.header.fill_mode,
|
||
geometry_epoch: self.geometry_epoch,
|
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camera_generation: self.camera_generation,
|
||
}
|
||
}
|
||
|
||
/// Build a Primitive that renders model-space content through a specific
|
||
/// paper-space viewport's camera, applying its layer-freeze list.
|
||
pub(super) fn build_viewport_primitive(
|
||
&self,
|
||
vp_handle: Handle,
|
||
hover_region: Option<usize>,
|
||
bounds: Rectangle,
|
||
) -> Primitive {
|
||
let cam = match self.camera_for_viewport(vp_handle) {
|
||
Some(c) => c,
|
||
None => return self.build_primitive(hover_region, bounds, false),
|
||
};
|
||
|
||
let base_arc = self.model_wires_for_viewport_arc(vp_handle);
|
||
let (face3d_wires, other_wires) = split_face3d_wires(&base_arc, &self.document);
|
||
let all_wires = if self.interim_wire.is_none() && self.preview_wires.is_empty() {
|
||
Arc::new(other_wires)
|
||
} else {
|
||
let mut v = other_wires;
|
||
if let Some(iw) = &self.interim_wire {
|
||
v.push(iw.clone());
|
||
}
|
||
v.extend(self.preview_wires.iter().cloned());
|
||
Arc::new(v)
|
||
};
|
||
|
||
Primitive {
|
||
wires: all_wires,
|
||
face3d_wires: Arc::new(face3d_wires),
|
||
hatches: self.hatch_models_arc(),
|
||
wipeout_hatches: self.wipeout_models_arc(),
|
||
images: self.images_arc(),
|
||
meshes: self.meshes_arc(),
|
||
uniforms: Uniforms::new(&cam, bounds, self.document.header.lineweight_display),
|
||
cam_rotation: cam.view_rotation_mat(),
|
||
hover_region,
|
||
bg_color: self.bg_color,
|
||
show_viewcube: false,
|
||
fill_mode: self.document.header.fill_mode,
|
||
geometry_epoch: self.geometry_epoch,
|
||
camera_generation: self.camera_generation,
|
||
}
|
||
}
|
||
|
||
/// Wrap `build_viewport_primitive()` in `PaperViewportPrimitive` for use
|
||
/// by `PaperViewportPane`, which needs its own dedicated pipeline type.
|
||
pub(super) fn build_active_viewport_primitive(
|
||
&self,
|
||
vp_handle: Handle,
|
||
hover_region: Option<usize>,
|
||
bounds: Rectangle,
|
||
) -> PaperViewportPrimitive {
|
||
PaperViewportPrimitive(self.build_viewport_primitive(vp_handle, hover_region, bounds))
|
||
}
|
||
|
||
/// Update viewcube hover state from cursor position within `bounds`.
|
||
pub(super) fn update_viewcube_state(
|
||
&self,
|
||
state: &mut CameraState,
|
||
bounds: Rectangle,
|
||
cursor: mouse::Cursor,
|
||
) {
|
||
let pos = cursor.position_in(bounds);
|
||
let cam_rotation = self.camera.borrow().view_rotation_mat();
|
||
if let Some(p) = pos {
|
||
state.hover_region = hover_id(
|
||
p.x,
|
||
p.y,
|
||
bounds.width,
|
||
bounds.height,
|
||
cam_rotation,
|
||
VIEWCUBE_PX,
|
||
);
|
||
} else {
|
||
state.hover_region = None;
|
||
}
|
||
}
|
||
|
||
pub(super) fn viewcube_mouse_interaction(&self, state: &CameraState) -> mouse::Interaction {
|
||
if state.hover_region.is_some() {
|
||
mouse::Interaction::Pointer
|
||
} else {
|
||
mouse::Interaction::default()
|
||
}
|
||
}
|
||
}
|
||
|
||
// ── Linetype pattern helper ───────────────────────────────────────────────
|
||
|
||
pub(super) fn resolve_pattern(
|
||
table: &acadrust::tables::Table<LineType>,
|
||
name: &str,
|
||
scale: f32,
|
||
) -> (f32, [f32; 8]) {
|
||
let solid = (0.0, [0.0f32; 8]);
|
||
if name.eq_ignore_ascii_case("continuous")
|
||
|| name.eq_ignore_ascii_case("bylayer")
|
||
|| name.eq_ignore_ascii_case("byblock")
|
||
|| name.is_empty()
|
||
{
|
||
return solid;
|
||
}
|
||
let lt = match table.get(name) {
|
||
Some(lt) => lt,
|
||
None => return solid,
|
||
};
|
||
if lt.is_continuous() || lt.elements.is_empty() {
|
||
return solid;
|
||
}
|
||
|
||
let mut pat = [0.0f32; 8];
|
||
let mut pat_len = 0.0f32;
|
||
for (i, el) in lt.elements.iter().take(8).enumerate() {
|
||
let raw = el.length as f32 * scale;
|
||
let encoded = if raw == 0.0 {
|
||
0.01 * scale.max(0.01)
|
||
} else {
|
||
raw
|
||
};
|
||
pat[i] = encoded;
|
||
pat_len += encoded.abs();
|
||
}
|
||
if pat_len < 1e-6 {
|
||
return solid;
|
||
}
|
||
(pat_len, pat)
|
||
}
|
||
|
||
/// Partition a wire list into (face3d_wires, other_wires).
|
||
///
|
||
/// Uses a document handle lookup so no changes to WireModel are needed.
|
||
/// O(N) per geometry epoch — acceptable since it runs once per epoch.
|
||
fn split_face3d_wires(
|
||
wires: &[WireModel],
|
||
document: &acadrust::CadDocument,
|
||
) -> (Vec<WireModel>, Vec<WireModel>) {
|
||
let mut face3d = Vec::new();
|
||
let mut others = Vec::new();
|
||
for w in wires {
|
||
let is_face3d = w
|
||
.name
|
||
.parse::<u64>()
|
||
.ok()
|
||
.and_then(|v| document.get_entity(Handle::new(v)))
|
||
.map(|e| matches!(e, EntityType::Face3D(_)))
|
||
.unwrap_or(false);
|
||
if is_face3d {
|
||
face3d.push(w.clone());
|
||
} else {
|
||
others.push(w.clone());
|
||
}
|
||
}
|
||
(face3d, others)
|
||
}
|