forked from 1b-agent/opencadstudio-upstream
Hakan Seven
44efb8fd53
Preserve frame geometry for selection while separating viewport and plot visibility across supported reference entities. Refs #642
1142 lines
49 KiB
Rust
1142 lines
49 KiB
Rust
// Wire GPU buffers — instanced quad rendering for thick lines.
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//
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// Each segment [A→B] is one INSTANCE; the vertex shader expands a 6-vertex
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// unit quad whose corners are derived from `@builtin(vertex_index)`. This
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// cuts upload bandwidth by ~6.5× versus the old layout (which duplicated
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// the segment payload across six vertex records).
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//
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// NaN sentinel: text glyphs pack multiple disconnected strokes into one
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// WireModel, separated by [NaN, NaN, NaN] points. Segments where either
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// endpoint contains NaN are silently skipped during emission.
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//
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// Instance layout (step_mode = Instance):
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// pos_a [f32; 3] — segment start (high half, world / offset-relative)
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// pos_a_low [f32; 3] — segment start low residual (double-single pair)
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// pos_b [f32; 3] — segment end (high)
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// pos_b_low [f32; 3] — segment end low residual
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// color [u8; 4] — RGBA, Unorm8x4 → vec4<f32> in shader
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// distance_a f32 — arc-length at endpoint A
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// distance_b f32 — arc-length at endpoint B
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// half_width f32 — half line width in pixels
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// pattern_length f32 — dash pattern total length
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// pat0 [f32; 4] — pattern elements 0-3
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// pat1 [f32; 4] — pattern elements 4-7
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// draw_depth f32 — normalized draw-order depth bias
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// The high+low pair encodes the f64 source so the relative-to-eye shader
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// stays precise at UTM-scale coordinates and after a cross-drawing paste.
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use crate::scene::model::wire_model::WireModel;
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use iced::wgpu;
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/// Allocate a VERTEX buffer with `mapped_at_creation` and write `data` directly
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/// into the mapped slice. Skips the intermediate staging copy that
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/// `create_buffer_init` performs and avoids holding a second `Vec` worth of
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/// memory during upload — meaningful on cold open where wire buffers can run
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/// into the hundreds of MB.
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fn instance_buffer_mapped<T: bytemuck::Pod>(
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device: &wgpu::Device,
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label: &str,
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data: &[T],
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) -> wgpu::Buffer {
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let bytes: &[u8] = bytemuck::cast_slice(data);
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// wgpu rejects size-0 buffers; the renderer already guards `instance_count`
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// before issuing a draw, so a placeholder allocation is fine here.
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let size = bytes.len().max(std::mem::size_of::<T>()) as u64;
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let buf = device.create_buffer(&wgpu::BufferDescriptor {
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label: Some(label),
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size,
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usage: wgpu::BufferUsages::VERTEX,
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mapped_at_creation: true,
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});
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{
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let mut view = buf.slice(..).get_mapped_range_mut();
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if !bytes.is_empty() {
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view.slice(..bytes.len()).copy_from_slice(bytes);
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}
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}
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buf.unmap();
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buf
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}
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// ── Instance layout ───────────────────────────────────────────────────────
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// ── Storage path: slim per-segment instance + shared constants ──────────────
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//
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// Every segment of a wire used to carry the wire's color / line-weight / dash
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// pattern / draw-depth (~44 B) on each instance — re-fetched once per segment
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// even though it's constant along the wire. On native we hoist those into a
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// per-wire `WireConst` storage buffer indexed by `wire_id`, so the instance
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// keeps only the per-segment data (endpoints + arc-length distances). Cuts the
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// instance from 104 B to one 64-byte cache line and removes the redundant
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// per-segment re-fetch of the shared constants. WebGL2 has no vertex-stage
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// storage buffers, so the compatibility path keeps the self-contained fat
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// instance.
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#[repr(C)]
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#[derive(Copy, Clone, bytemuck::Pod, bytemuck::Zeroable)]
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pub struct WireInstance {
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pub pos_a: [f32; 3],
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pub pos_a_low: [f32; 3],
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pub pos_b: [f32; 3],
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pub pos_b_low: [f32; 3],
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pub distance_a: f32,
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pub distance_b: f32,
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/// Index into the per-wire `WireConst` storage buffer (group 1).
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pub wire_id: u32,
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/// Endpoint width / the per-wire maximum width, normalized by the vertex
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/// fetch unit. `[0, 0]` means use the constant width. Ratios retain the
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/// full f32 world-width scale in `WireConst` while making every instance
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/// exactly one 64-byte cache line.
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pub taper_ratio: [u16; 2],
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}
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impl WireInstance {
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pub fn layout<'a>() -> wgpu::VertexBufferLayout<'a> {
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// Must match `InstanceIn` in wire_indexed.wgsl.
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const ATTRS: &[wgpu::VertexAttribute] = &[
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wgpu::VertexAttribute { offset: std::mem::offset_of!(WireInstance, pos_a) as u64, shader_location: 0, format: wgpu::VertexFormat::Float32x3 },
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wgpu::VertexAttribute { offset: std::mem::offset_of!(WireInstance, pos_b) as u64, shader_location: 1, format: wgpu::VertexFormat::Float32x3 },
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wgpu::VertexAttribute { offset: std::mem::offset_of!(WireInstance, pos_a_low) as u64, shader_location: 2, format: wgpu::VertexFormat::Float32x3 },
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wgpu::VertexAttribute { offset: std::mem::offset_of!(WireInstance, pos_b_low) as u64, shader_location: 3, format: wgpu::VertexFormat::Float32x3 },
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wgpu::VertexAttribute { offset: std::mem::offset_of!(WireInstance, distance_a) as u64, shader_location: 4, format: wgpu::VertexFormat::Float32 },
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wgpu::VertexAttribute { offset: std::mem::offset_of!(WireInstance, distance_b) as u64, shader_location: 5, format: wgpu::VertexFormat::Float32 },
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wgpu::VertexAttribute { offset: std::mem::offset_of!(WireInstance, wire_id) as u64, shader_location: 6, format: wgpu::VertexFormat::Uint32 },
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wgpu::VertexAttribute { offset: std::mem::offset_of!(WireInstance, taper_ratio) as u64, shader_location: 7, format: wgpu::VertexFormat::Unorm16x2 },
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];
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wgpu::VertexBufferLayout {
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array_stride: std::mem::size_of::<WireInstance>() as u64,
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step_mode: wgpu::VertexStepMode::Instance,
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attributes: ATTRS,
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}
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}
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}
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/// Per-wire constants shared by every segment of a wire (storage path). std430
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/// layout: three vec4 then eight scalars = 80 B, matching `WireConst` in
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/// wire_indexed.wgsl. `align_end` / `align_total` carry the "A"-type endpoint
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/// alignment (see `wire_distances`); 0.0 total = no alignment.
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#[repr(C)]
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#[derive(Copy, Clone, bytemuck::Pod, bytemuck::Zeroable)]
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pub struct WireConst {
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pub color: [f32; 4],
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pub pat0: [f32; 4],
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pub pat1: [f32; 4],
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pub half_width: f32,
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pub pattern_length: f32,
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pub draw_depth: f32,
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pub align_end: f32,
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pub align_total: f32,
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/// World-space half-width for a wide-polyline band. `0.0` = a normal wire
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/// (uses `half_width`, screen pixels). Non-zero = the vertex shader expands
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/// the quad by `world_half_width / world_per_pixel` so the band tracks zoom
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/// in drawing units.
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pub world_half_width: f32,
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pub _pad1: f32,
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pub _pad2: f32,
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}
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impl WireConst {
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/// Bind-group layout for the per-wire storage buffer (group 1 of the wire /
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/// xray pipelines). Read-only storage, visible to the vertex stage.
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pub fn bind_group_layout(device: &wgpu::Device) -> wgpu::BindGroupLayout {
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device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
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label: Some("wire_const.bgl"),
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entries: &[wgpu::BindGroupLayoutEntry {
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binding: 0,
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visibility: wgpu::ShaderStages::VERTEX,
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ty: wgpu::BindingType::Buffer {
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ty: wgpu::BufferBindingType::Storage { read_only: true },
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has_dynamic_offset: false,
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min_binding_size: None,
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},
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count: None,
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}],
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})
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}
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}
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// ── Packed compatibility instance (no vertex-stage storage) ────────────────
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//
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// Selected at runtime for devices whose storage-buffer limits are insufficient,
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// or when --compat-renderer is set.
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#[repr(C)]
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#[derive(Copy, Clone, bytemuck::Pod, bytemuck::Zeroable)]
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pub struct PackedWireInstance {
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pub pos_a: [f32; 3],
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pub pos_a_low: [f32; 3],
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pub pos_b: [f32; 3],
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pub pos_b_low: [f32; 3],
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/// RGBA packed as `Unorm8x4` — the vertex shader receives a `vec4<f32>`
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/// in [0, 1] after the GPU does the conversion. 8 bits per channel is
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/// indistinguishable from f32 at 8-bit display output.
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pub color: [u8; 4],
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pub distance_a: f32,
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pub distance_b: f32,
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pub half_width: f32,
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pub pattern_length: f32,
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pub pat0: [f32; 4],
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pub pat1: [f32; 4],
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/// Normalized draw-order depth in (0,1); applied as a small clip-z bias
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/// in the shader so this wire orders against other entity types.
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pub draw_depth: f32,
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/// "A"-type endpoint alignment (see `wire_distances`): the end-dash length
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/// and the total wire length. `align_total == 0.0` = not aligned.
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pub align_end: f32,
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pub align_total: f32,
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/// World-space half-width for a wide-polyline band (see `WireConst`). `0.0`
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/// = a normal wire (uses `half_width`, screen pixels).
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pub world_half_width: f32,
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/// Per-endpoint world half-width for a tapered band (0 = use the constant
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/// `world_half_width`). The shader interpolates across the segment.
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pub world_hw_a: f32,
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pub world_hw_b: f32,
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}
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impl PackedWireInstance {
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pub fn layout<'a>() -> wgpu::VertexBufferLayout<'a> {
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// Offsets come from the struct layout (must match the shader location
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// indices in wire.wgsl). Scalars ride in PACKED vec4/vec2 attributes —
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// WebGL2 / WebGPU cap vertex attributes at 16 and the one-scalar-per-
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// location layout had grown to 17, so the pipeline failed to build and
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// the web viewport drew no lines at all (#414). The struct fields are
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// laid out so each packed group is contiguous.
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const ATTRS: &[wgpu::VertexAttribute] = &[
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wgpu::VertexAttribute { offset: std::mem::offset_of!(PackedWireInstance, pos_a) as u64, shader_location: 0, format: wgpu::VertexFormat::Float32x3 },
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wgpu::VertexAttribute { offset: std::mem::offset_of!(PackedWireInstance, pos_b) as u64, shader_location: 1, format: wgpu::VertexFormat::Float32x3 },
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wgpu::VertexAttribute { offset: std::mem::offset_of!(PackedWireInstance, color) as u64, shader_location: 2, format: wgpu::VertexFormat::Unorm8x4 },
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// dists = (distance_a, distance_b, half_width, pattern_length)
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wgpu::VertexAttribute { offset: std::mem::offset_of!(PackedWireInstance, distance_a) as u64, shader_location: 3, format: wgpu::VertexFormat::Float32x4 },
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wgpu::VertexAttribute { offset: std::mem::offset_of!(PackedWireInstance, pat0) as u64, shader_location: 4, format: wgpu::VertexFormat::Float32x4 },
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wgpu::VertexAttribute { offset: std::mem::offset_of!(PackedWireInstance, pat1) as u64, shader_location: 5, format: wgpu::VertexFormat::Float32x4 },
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// misc = (draw_depth, align_end, align_total, world_half_width)
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wgpu::VertexAttribute { offset: std::mem::offset_of!(PackedWireInstance, draw_depth) as u64, shader_location: 6, format: wgpu::VertexFormat::Float32x4 },
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wgpu::VertexAttribute { offset: std::mem::offset_of!(PackedWireInstance, pos_a_low) as u64, shader_location: 7, format: wgpu::VertexFormat::Float32x3 },
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wgpu::VertexAttribute { offset: std::mem::offset_of!(PackedWireInstance, pos_b_low) as u64, shader_location: 8, format: wgpu::VertexFormat::Float32x3 },
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// taper = (world_hw_a, world_hw_b)
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wgpu::VertexAttribute { offset: std::mem::offset_of!(PackedWireInstance, world_hw_a) as u64, shader_location: 9, format: wgpu::VertexFormat::Float32x2 },
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];
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wgpu::VertexBufferLayout {
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array_stride: std::mem::size_of::<PackedWireInstance>() as u64,
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step_mode: wgpu::VertexStepMode::Instance,
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attributes: ATTRS,
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}
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}
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}
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/// Wire and hatch pipelines switch together: the fast path uses storage
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/// buffers; the compatibility path carries wire constants in packed vertex
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/// attributes and hatch data in a texture.
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#[derive(Debug, Clone, Copy, PartialEq, Eq)]
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pub enum WirePipelineMode {
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IndexedStorage,
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Packed,
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}
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fn select_pipeline(
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capabilities: super::device_capabilities::DeviceCapabilities,
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forced: bool,
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) -> WirePipelineMode {
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if forced || !capabilities.supports_wire_storage() {
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WirePipelineMode::Packed
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} else {
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WirePipelineMode::IndexedStorage
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}
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}
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impl WirePipelineMode {
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pub fn select(
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capabilities: super::device_capabilities::DeviceCapabilities,
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forced: bool,
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) -> Self {
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select_pipeline(capabilities, forced)
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}
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pub fn uses_storage(self) -> bool {
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match self {
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Self::IndexedStorage => true,
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Self::Packed => false,
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}
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}
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pub fn layout<'a>(self) -> wgpu::VertexBufferLayout<'a> {
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match self {
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Self::IndexedStorage => WireInstance::layout(),
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Self::Packed => PackedWireInstance::layout(),
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}
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}
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}
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// ── GPU handle ────────────────────────────────────────────────────────────
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#[derive(Clone)]
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pub struct WireGpu {
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pub instance_buffer: wgpu::Buffer,
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/// First instance in a shared arena buffer. Standalone buffers start at 0.
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pub first_instance: u32,
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pub instance_count: u32,
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/// `true` when the source `WireModel` also carries `fill_tris`
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/// (i.e. it is a 3D mesh face — PolyfaceMesh / PolygonMesh — whose
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/// outline lives in `points`). The wire pass skips these instances
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/// in shaded modes so the surface reads as a clean solid; pure
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/// wireframe / HiddenLine / *WithEdges modes draw them.
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pub is_3d_mesh_edge: bool,
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/// Per-wire constants storage (group 1), shared across all chunks of one
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/// build. `None` on web (the fat instance carries the constants inline) and
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/// for empty buffers. The draw loop binds it as group 1 when present.
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pub const_bind_group: Option<std::sync::Arc<wgpu::BindGroup>>,
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}
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#[repr(C)]
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#[derive(Copy, Clone, bytemuck::Pod, bytemuck::Zeroable)]
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pub struct BlockWireVertex {
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pub pos_a: [f32; 3],
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pub pos_a_low: [f32; 3],
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pub pos_b: [f32; 3],
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pub pos_b_low: [f32; 3],
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pub distances: [f32; 2],
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pub taper_ratio: [u16; 2],
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}
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impl BlockWireVertex {
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pub fn layout<'a>() -> wgpu::VertexBufferLayout<'a> {
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const ATTRS: &[wgpu::VertexAttribute] = &[
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wgpu::VertexAttribute { offset: std::mem::offset_of!(BlockWireVertex, pos_a) as u64, shader_location: 0, format: wgpu::VertexFormat::Float32x3 },
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wgpu::VertexAttribute { offset: std::mem::offset_of!(BlockWireVertex, pos_b) as u64, shader_location: 1, format: wgpu::VertexFormat::Float32x3 },
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wgpu::VertexAttribute { offset: std::mem::offset_of!(BlockWireVertex, pos_a_low) as u64, shader_location: 2, format: wgpu::VertexFormat::Float32x3 },
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wgpu::VertexAttribute { offset: std::mem::offset_of!(BlockWireVertex, pos_b_low) as u64, shader_location: 3, format: wgpu::VertexFormat::Float32x3 },
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wgpu::VertexAttribute { offset: std::mem::offset_of!(BlockWireVertex, distances) as u64, shader_location: 4, format: wgpu::VertexFormat::Float32x2 },
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wgpu::VertexAttribute { offset: std::mem::offset_of!(BlockWireVertex, taper_ratio) as u64, shader_location: 5, format: wgpu::VertexFormat::Unorm16x2 },
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];
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wgpu::VertexBufferLayout {
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array_stride: std::mem::size_of::<Self>() as u64,
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step_mode: wgpu::VertexStepMode::Vertex,
|
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attributes: ATTRS,
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}
|
||
}
|
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}
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#[repr(C)]
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#[derive(Copy, Clone, bytemuck::Pod, bytemuck::Zeroable)]
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pub struct BlockWireInstance {
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pub translation: [f32; 3],
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pub translation_low: [f32; 3],
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pub depth: [f32; 2],
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}
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impl BlockWireInstance {
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pub fn layout<'a>() -> wgpu::VertexBufferLayout<'a> {
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const ATTRS: &[wgpu::VertexAttribute] = &[
|
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wgpu::VertexAttribute { offset: std::mem::offset_of!(BlockWireInstance, translation) as u64, shader_location: 6, format: wgpu::VertexFormat::Float32x3 },
|
||
wgpu::VertexAttribute { offset: std::mem::offset_of!(BlockWireInstance, translation_low) as u64, shader_location: 7, format: wgpu::VertexFormat::Float32x3 },
|
||
wgpu::VertexAttribute { offset: std::mem::offset_of!(BlockWireInstance, depth) as u64, shader_location: 8, format: wgpu::VertexFormat::Float32x2 },
|
||
];
|
||
wgpu::VertexBufferLayout {
|
||
array_stride: std::mem::size_of::<Self>() as u64,
|
||
step_mode: wgpu::VertexStepMode::Instance,
|
||
attributes: ATTRS,
|
||
}
|
||
}
|
||
}
|
||
|
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#[derive(Clone)]
|
||
pub struct BlockWireGpu {
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||
pub vertex_buffer: wgpu::Buffer,
|
||
pub instance_buffer: wgpu::Buffer,
|
||
pub vertex_count: u32,
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||
pub instance_count: u32,
|
||
pub is_3d_mesh_edge: bool,
|
||
pub const_bind_group: std::sync::Arc<wgpu::BindGroup>,
|
||
}
|
||
|
||
pub fn block_const_bind_group_layout(device: &wgpu::Device) -> wgpu::BindGroupLayout {
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device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
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||
label: Some("block_wire_const.bgl"),
|
||
entries: &[wgpu::BindGroupLayoutEntry {
|
||
binding: 0,
|
||
visibility: wgpu::ShaderStages::VERTEX,
|
||
ty: wgpu::BindingType::Buffer {
|
||
ty: wgpu::BufferBindingType::Uniform,
|
||
has_dynamic_offset: false,
|
||
min_binding_size: None,
|
||
},
|
||
count: None,
|
||
}],
|
||
})
|
||
}
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||
|
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/// Expand one `WireModel` into its per-segment instance stream (1 instance per
|
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/// finite segment). Pulled out so both the single-wire and batched paths share
|
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/// the same emission logic, and so the batched path can `par_iter` across
|
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/// wires on cold open.
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fn pack_color(color: [f32; 4]) -> [u8; 4] {
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[
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(color[0].clamp(0.0, 1.0) * 255.0 + 0.5) as u8,
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(color[1].clamp(0.0, 1.0) * 255.0 + 0.5) as u8,
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(color[2].clamp(0.0, 1.0) * 255.0 + 0.5) as u8,
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(color[3].clamp(0.0, 1.0) * 255.0 + 0.5) as u8,
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||
]
|
||
}
|
||
|
||
/// Cumulative arc-length per point (NaN-break aware) plus the `"A"`-type
|
||
/// alignment pair `(align_end, align_total)`. Shared by the wasm and native
|
||
/// emission paths.
|
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///
|
||
/// AutoCAD-style linetypes are implicitly `A` (aligned): a dashed line must
|
||
/// begin AND end on a solid dash, keeping the interior dashes at their nominal
|
||
/// length and stretching/shrinking only the two end dashes symmetrically to
|
||
/// absorb the leftover (so parallel lines share an identical interior). We
|
||
/// express that on the GPU by handing the shader the total wire length
|
||
/// (`align_total`) and the end-dash length (`align_end`); the pattern walk then
|
||
/// forces the two end regions lit and phases the interior to resume right after
|
||
/// the first dash. `align_total == 0.0` disables it and the shader falls back to
|
||
/// the legacy centred repeating pattern.
|
||
///
|
||
/// Alignment applies only to a single continuous run (`!has_break`) whose
|
||
/// pattern begins with a dash. NaN-separated (plinegen=false) polylines and
|
||
/// non-dash-first patterns keep the legacy centred phase.
|
||
fn wire_distances(wire: &WireModel) -> (Vec<f32>, f32, f32) {
|
||
let n = wire.points.len();
|
||
let mut dists = vec![0.0_f32; n];
|
||
let mut has_break = false;
|
||
// Accumulate arc-length in f64 from double-single deltas (high + low). An
|
||
// f32-high-only delta `q[0] - p[0]` quantises ~0.1 at UTM coordinates
|
||
// (−1.2M), which shifts the dash phase and drifts parallel lines out of sync
|
||
// — the reason MLINE elements were CPU-dashed. `points_low` may be empty for
|
||
// non-RTE wires → treat the low half as zero (same as the old behaviour).
|
||
let mut acc = 0.0_f64;
|
||
for i in 1..n {
|
||
let p = wire.points[i - 1];
|
||
let q = wire.points[i];
|
||
if !p[0].is_finite() || !q[0].is_finite() {
|
||
has_break = true;
|
||
// plinegen=false: reset to 0 at the first real point after a NaN separator.
|
||
if !wire.plinegen && !p[0].is_finite() && q[0].is_finite() {
|
||
acc = 0.0;
|
||
}
|
||
dists[i] = acc as f32;
|
||
} else {
|
||
let pl = wire.points_low.get(i - 1).copied().unwrap_or([0.0; 3]);
|
||
let ql = wire.points_low.get(i).copied().unwrap_or([0.0; 3]);
|
||
let dx = (q[0] as f64 - p[0] as f64) + (ql[0] as f64 - pl[0] as f64);
|
||
let dy = (q[1] as f64 - p[1] as f64) + (ql[1] as f64 - pl[1] as f64);
|
||
let dz = (q[2] as f64 - p[2] as f64) + (ql[2] as f64 - pl[2] as f64);
|
||
acc += (dx * dx + dy * dy + dz * dz).sqrt();
|
||
dists[i] = acc as f32;
|
||
}
|
||
}
|
||
|
||
let pat_len = wire.pattern_length;
|
||
if pat_len <= 1e-6 || has_break || n < 2 {
|
||
return (dists, 0.0, 0.0);
|
||
}
|
||
let total = dists[n - 1];
|
||
if total <= 1e-6 {
|
||
return (dists, 0.0, 0.0);
|
||
}
|
||
|
||
// DGN line styles draw the pattern from the START vertex with continuous
|
||
// phase and are NOT end-aligned. The raw arc-length distances already put
|
||
// dist 0 at the first vertex, so a dash-first pattern begins a dash exactly
|
||
// there. Return before the A-type / centring logic that standard linetypes
|
||
// use (see `WireModel::dash_from_start`).
|
||
if wire.dash_from_start {
|
||
return (dists, 0.0, 0.0);
|
||
}
|
||
|
||
// Shared "A"-type for MLINE elements: the caller fixes the begin/end
|
||
// solid-dash length (`dash_align_end`, derived once from the multiline's
|
||
// centre-line length) so every parallel element runs the SAME interior phase
|
||
// — the shader's interior walk depends on `align_end`, not on the wire's own
|
||
// length — while `align_total` stays this wire's own length, so each element
|
||
// still ends on a dash at its own endpoint.
|
||
if let Some(ae) = wire.dash_align_end {
|
||
if total <= pat_len {
|
||
// Shorter than one full period → solid (matches the per-wire path).
|
||
return (dists, total, total);
|
||
}
|
||
return (dists, ae.clamp(1e-4, total * 0.5), total);
|
||
}
|
||
|
||
// Align only a proper alternating pattern that BEGINS with a dash followed
|
||
// by a gap — every standard linetype does (DASHED/DASHDOT/CENTER/HIDDEN/…).
|
||
// Gap-first, dot-first, single-element, or consecutive-dash patterns keep
|
||
// the legacy centred phase: the A-type interior-resume assumes the element
|
||
// after the leading dash is a gap, and force-lighting an end dash on a
|
||
// non-dash-start would paint over a leading blank.
|
||
if wire.pattern[0] > 0.0 && wire.pattern[1] < 0.0 {
|
||
let a = wire.pattern[0];
|
||
let p = pat_len;
|
||
if total <= p {
|
||
// Shorter than one full pattern period → drawn as a single solid
|
||
// dash spanning the whole line (aligned linetypes can't fit a
|
||
// dash-gap-dash in less than one period).
|
||
return (dists, total, total);
|
||
}
|
||
// "A" alignment for a dash-first pattern of period P laid out as
|
||
// [D] [gap] ([dash] [gap])*(k-1) [D]
|
||
// gives L = 2D + (k-1)a + k(P-a) => D = (L - k*P + a) / 2.
|
||
// Pick the interior period count k so the end dash D stays near nominal a.
|
||
let mut k = ((total - a) / p).round().max(1.0);
|
||
let mut d_end = (total - k * p + a) * 0.5;
|
||
if d_end <= 1e-4 {
|
||
// End dash underflowed (period ≫ first dash); drop one period so the
|
||
// ends stay visible.
|
||
k = (k - 1.0).max(0.0);
|
||
d_end = (total - k * p + a) * 0.5;
|
||
}
|
||
let d_end = d_end.clamp(1e-4, total * 0.5);
|
||
return (dists, d_end, total);
|
||
}
|
||
|
||
// Legacy centred phase for non-aligned patterns (behaviour unchanged from
|
||
// before A-type). The shader reads phase as `dist % pattern_length`, so a
|
||
// constant offset shifts it; place the wire midpoint at the first dash's
|
||
// centre so the two ends stay symmetric.
|
||
let first_dash = wire
|
||
.pattern
|
||
.iter()
|
||
.copied()
|
||
.find(|&v| v > 0.0)
|
||
.unwrap_or_else(|| wire.pattern[0].abs());
|
||
let offset = first_dash * 0.5 + total * 0.5;
|
||
for d in dists.iter_mut() {
|
||
*d += offset;
|
||
}
|
||
(dists, 0.0, 0.0)
|
||
}
|
||
|
||
#[inline]
|
||
fn finite3(p: [f32; 3]) -> bool {
|
||
p[0].is_finite() && p[1].is_finite() && p[2].is_finite()
|
||
}
|
||
|
||
/// Emit packed per-segment instances (each carries the wire's constants).
|
||
pub(crate) fn emit_wire_packed(
|
||
wire: &WireModel,
|
||
color: [f32; 4],
|
||
draw_depth: f32,
|
||
) -> Vec<PackedWireInstance> {
|
||
let color_u8 = pack_color(color);
|
||
let pat0 = [wire.pattern[0], wire.pattern[1], wire.pattern[2], wire.pattern[3]];
|
||
let pat1 = [wire.pattern[4], wire.pattern[5], wire.pattern[6], wire.pattern[7]];
|
||
let half_width = wire.line_weight_px * 0.5;
|
||
let n = wire.points.len();
|
||
let seg_count = n.saturating_sub(1);
|
||
if seg_count == 0 {
|
||
return Vec::new();
|
||
}
|
||
let (dists, align_end, align_total) = wire_distances(wire);
|
||
let low = |i: usize| -> [f32; 3] { wire.points_low.get(i).copied().unwrap_or([0.0; 3]) };
|
||
let tw = |i: usize| -> f32 { wire.taper_widths.get(i).copied().unwrap_or(0.0) * 0.5 };
|
||
let mut instances: Vec<PackedWireInstance> = Vec::with_capacity(seg_count);
|
||
for i in 0..seg_count {
|
||
let a = wire.points[i];
|
||
let b = wire.points[i + 1];
|
||
if !finite3(a) || !finite3(b) {
|
||
continue;
|
||
}
|
||
instances.push(PackedWireInstance {
|
||
pos_a: a,
|
||
pos_a_low: low(i),
|
||
pos_b: b,
|
||
pos_b_low: low(i + 1),
|
||
color: color_u8,
|
||
distance_a: dists[i],
|
||
distance_b: dists[i + 1],
|
||
half_width,
|
||
pattern_length: wire.pattern_length,
|
||
pat0,
|
||
pat1,
|
||
draw_depth,
|
||
align_end,
|
||
align_total,
|
||
world_half_width: wire.world_width * 0.5,
|
||
world_hw_a: tw(i),
|
||
world_hw_b: tw(i + 1),
|
||
});
|
||
}
|
||
instances
|
||
}
|
||
|
||
/// Storage path: emit slim instances (positions + distances + `wire_id`)
|
||
/// plus the one `WireConst` record every segment of this wire shares.
|
||
pub(crate) fn emit_wire_native(
|
||
wire: &WireModel,
|
||
wire_id: u32,
|
||
color: [f32; 4],
|
||
draw_depth: f32,
|
||
) -> (Vec<WireInstance>, WireConst) {
|
||
let (dists, align_end, align_total) = wire_distances(wire);
|
||
let cst = WireConst {
|
||
color,
|
||
pat0: [wire.pattern[0], wire.pattern[1], wire.pattern[2], wire.pattern[3]],
|
||
pat1: [wire.pattern[4], wire.pattern[5], wire.pattern[6], wire.pattern[7]],
|
||
half_width: wire.line_weight_px * 0.5,
|
||
pattern_length: wire.pattern_length,
|
||
draw_depth,
|
||
align_end,
|
||
align_total,
|
||
world_half_width: wire.world_width * 0.5,
|
||
_pad1: 0.0,
|
||
_pad2: 0.0,
|
||
};
|
||
let n = wire.points.len();
|
||
let seg_count = n.saturating_sub(1);
|
||
if seg_count == 0 {
|
||
return (Vec::new(), cst);
|
||
}
|
||
let low = |i: usize| -> [f32; 3] { wire.points_low.get(i).copied().unwrap_or([0.0; 3]) };
|
||
// Store an endpoint/max-width ratio. The shared f32 maximum keeps drawing
|
||
// units and range out of the packed field; UNORM16 contributes only a
|
||
// relative error below 1/65535. Preserve zero as the existing constant
|
||
// width fallback sentinel.
|
||
let taper_ratio = |i: usize| -> u16 {
|
||
let width = wire.taper_widths.get(i).copied().unwrap_or(0.0);
|
||
if width <= 0.0 || wire.world_width <= 0.0 {
|
||
0
|
||
} else {
|
||
((width / wire.world_width).clamp(0.0, 1.0) * u16::MAX as f32)
|
||
.round()
|
||
.max(1.0) as u16
|
||
}
|
||
};
|
||
let mut instances: Vec<WireInstance> = Vec::with_capacity(seg_count);
|
||
for i in 0..seg_count {
|
||
let a = wire.points[i];
|
||
let b = wire.points[i + 1];
|
||
if !finite3(a) || !finite3(b) {
|
||
continue;
|
||
}
|
||
instances.push(WireInstance {
|
||
pos_a: a,
|
||
pos_a_low: low(i),
|
||
pos_b: b,
|
||
pos_b_low: low(i + 1),
|
||
distance_a: dists[i],
|
||
distance_b: dists[i + 1],
|
||
wire_id,
|
||
taper_ratio: [taper_ratio(i), taper_ratio(i + 1)],
|
||
});
|
||
}
|
||
(instances, cst)
|
||
}
|
||
|
||
/// Looks up a wire's draw-order depth from the per-entity map using the
|
||
/// handle encoded in its `name`. Falls back to 0.0 (transient / preview
|
||
/// wires that carry no document handle). A wire carrying a block-local
|
||
/// `depth_override` (a wide-polyline band inside a block) composes it into
|
||
/// the insert's own sub-range so the band orders against its block siblings.
|
||
pub(crate) fn wire_draw_depth(
|
||
wire: &WireModel,
|
||
depth_map: &rustc_hash::FxHashMap<u64, [f32; 2]>,
|
||
) -> f32 {
|
||
let base = wire
|
||
.name
|
||
.parse::<u64>()
|
||
.ok()
|
||
.and_then(|h| depth_map.get(&h).copied());
|
||
match (base, wire.depth_override) {
|
||
(Some([d, half]), Some(local)) => d + local * half,
|
||
(Some([d, _]), None) => d,
|
||
(None, _) => 0.0,
|
||
}
|
||
}
|
||
|
||
impl BlockWireGpu {
|
||
pub fn from_wires(
|
||
device: &wgpu::Device,
|
||
wires: &[&WireModel],
|
||
depth_map: &rustc_hash::FxHashMap<u64, [f32; 2]>,
|
||
color_override: Option<[f32; 4]>,
|
||
const_bgl: &wgpu::BindGroupLayout,
|
||
) -> Vec<Self> {
|
||
use wgpu::util::DeviceExt;
|
||
|
||
let mut slots: rustc_hash::FxHashMap<(u64, bool), usize> =
|
||
rustc_hash::FxHashMap::default();
|
||
let mut groups: Vec<(bool, Vec<&WireModel>)> = Vec::new();
|
||
for &wire in wires {
|
||
if color_override.is_none() && !wire.display_visible {
|
||
continue;
|
||
}
|
||
let Some(instance) = wire.render_instance else {
|
||
continue;
|
||
};
|
||
if wire.points.len() < 2 {
|
||
continue;
|
||
}
|
||
let mesh_edge = color_override.is_none() && wire.fill_is_3d;
|
||
let key = (instance.source_id, mesh_edge);
|
||
let slot = *slots.entry(key).or_insert_with(|| {
|
||
let slot = groups.len();
|
||
groups.push((mesh_edge, Vec::new()));
|
||
slot
|
||
});
|
||
groups[slot].1.push(wire);
|
||
}
|
||
|
||
let mut out = Vec::new();
|
||
for (mesh_edge, group) in groups {
|
||
let Some(&source) = group.first() else {
|
||
continue;
|
||
};
|
||
let Some(base) = source.render_instance else {
|
||
continue;
|
||
};
|
||
let color = color_override.unwrap_or(source.color);
|
||
let (segments, mut constant) = emit_wire_native(source, 0, color, 0.0);
|
||
if segments.is_empty() {
|
||
continue;
|
||
}
|
||
constant.draw_depth = 0.0;
|
||
let mut vertices = Vec::with_capacity(segments.len() * 6);
|
||
for segment in segments {
|
||
let vertex = BlockWireVertex {
|
||
pos_a: segment.pos_a,
|
||
pos_a_low: segment.pos_a_low,
|
||
pos_b: segment.pos_b,
|
||
pos_b_low: segment.pos_b_low,
|
||
distances: [segment.distance_a, segment.distance_b],
|
||
taper_ratio: segment.taper_ratio,
|
||
};
|
||
vertices.extend_from_slice(&[vertex; 6]);
|
||
}
|
||
let vertex_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
|
||
label: Some("block_wire.vertices"),
|
||
contents: bytemuck::cast_slice(&vertices),
|
||
usage: wgpu::BufferUsages::VERTEX,
|
||
});
|
||
let const_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
|
||
label: Some("block_wire.const"),
|
||
contents: bytemuck::bytes_of(&constant),
|
||
usage: wgpu::BufferUsages::UNIFORM,
|
||
});
|
||
let const_bind_group = std::sync::Arc::new(device.create_bind_group(
|
||
&wgpu::BindGroupDescriptor {
|
||
label: Some("block_wire.const.bg"),
|
||
layout: const_bgl,
|
||
entries: &[wgpu::BindGroupEntry {
|
||
binding: 0,
|
||
resource: const_buffer.as_entire_binding(),
|
||
}],
|
||
},
|
||
));
|
||
let instances: Vec<BlockWireInstance> = group
|
||
.iter()
|
||
.filter_map(|wire| {
|
||
let instance = wire.render_instance?;
|
||
let delta = [
|
||
instance.translation[0] - base.translation[0],
|
||
instance.translation[1] - base.translation[1],
|
||
instance.translation[2] - base.translation[2],
|
||
];
|
||
let high = delta.map(|value| value as f32);
|
||
Some(BlockWireInstance {
|
||
translation: high,
|
||
translation_low: [
|
||
(delta[0] - high[0] as f64) as f32,
|
||
(delta[1] - high[1] as f64) as f32,
|
||
(delta[2] - high[2] as f64) as f32,
|
||
],
|
||
depth: [
|
||
if mesh_edge {
|
||
0.0
|
||
} else {
|
||
wire_draw_depth(wire, depth_map)
|
||
},
|
||
0.0,
|
||
],
|
||
})
|
||
})
|
||
.collect();
|
||
let max_instances = ((device.limits().max_buffer_size as usize / 10) * 9
|
||
/ std::mem::size_of::<BlockWireInstance>())
|
||
.max(1);
|
||
for chunk in instances.chunks(max_instances) {
|
||
out.push(Self {
|
||
vertex_buffer: vertex_buffer.clone(),
|
||
instance_buffer: instance_buffer_mapped(
|
||
device,
|
||
"block_wire.instances",
|
||
chunk,
|
||
),
|
||
vertex_count: vertices.len() as u32,
|
||
instance_count: chunk.len() as u32,
|
||
is_3d_mesh_edge: mesh_edge,
|
||
const_bind_group: const_bind_group.clone(),
|
||
});
|
||
}
|
||
}
|
||
out
|
||
}
|
||
}
|
||
|
||
/// Build the shared per-wire `WireConst` storage buffer and its bind group
|
||
/// (storage path). All chunks from one build reference the same
|
||
/// buffer via their global `wire_id`, so a single bind group is cloned into
|
||
/// each chunk.
|
||
fn build_const_bind_group(
|
||
device: &wgpu::Device,
|
||
bgl: &wgpu::BindGroupLayout,
|
||
consts: &[WireConst],
|
||
) -> std::sync::Arc<wgpu::BindGroup> {
|
||
use wgpu::util::DeviceExt;
|
||
// wgpu rejects zero-sized buffers; pad with one zeroed record when empty.
|
||
let one = [<WireConst as bytemuck::Zeroable>::zeroed()];
|
||
let data: &[WireConst] = if consts.is_empty() { &one } else { consts };
|
||
let buf = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
|
||
label: Some("wire_const.buf"),
|
||
contents: bytemuck::cast_slice(data),
|
||
usage: wgpu::BufferUsages::STORAGE,
|
||
});
|
||
let bg = device.create_bind_group(&wgpu::BindGroupDescriptor {
|
||
label: Some("wire_const.bg"),
|
||
layout: bgl,
|
||
entries: &[wgpu::BindGroupEntry {
|
||
binding: 0,
|
||
resource: buf.as_entire_binding(),
|
||
}],
|
||
});
|
||
std::sync::Arc::new(bg)
|
||
}
|
||
|
||
impl WireGpu {
|
||
/// Build a small selection/hover overlay from borrowed resident wires while
|
||
/// overriding their colour. Avoids deep-cloning every point/text/fill array
|
||
/// of a large selected polyline or block before packing the overlay.
|
||
pub fn from_highlight_refs(
|
||
device: &wgpu::Device,
|
||
wires: &[&WireModel],
|
||
color: [f32; 4],
|
||
depth_map: &rustc_hash::FxHashMap<u64, [f32; 2]>,
|
||
const_bgl: Option<&wgpu::BindGroupLayout>,
|
||
) -> Vec<Self> {
|
||
if let Some(const_bgl) = const_bgl {
|
||
const MAX_INSTANCES: usize =
|
||
268_435_456 / std::mem::size_of::<WireInstance>();
|
||
use crate::par::prelude::*;
|
||
let per: Vec<(Vec<WireInstance>, WireConst)> = wires
|
||
.par_iter()
|
||
.enumerate()
|
||
.map(|(idx, &wire)| {
|
||
emit_wire_native(wire, idx as u32, color, wire_draw_depth(wire, depth_map))
|
||
})
|
||
.collect();
|
||
let mut instances =
|
||
Vec::with_capacity(per.iter().map(|(items, _)| items.len()).sum());
|
||
let mut consts = Vec::with_capacity(per.len());
|
||
for (mut items, constant) in per {
|
||
instances.append(&mut items);
|
||
consts.push(constant);
|
||
}
|
||
if instances.is_empty() {
|
||
return Vec::new();
|
||
}
|
||
let bind_group = build_const_bind_group(device, const_bgl, &consts);
|
||
return instances
|
||
.chunks(MAX_INSTANCES)
|
||
.map(|chunk| Self {
|
||
instance_buffer: instance_buffer_mapped(
|
||
device,
|
||
"wire.highlight.ibuf",
|
||
chunk,
|
||
),
|
||
first_instance: 0,
|
||
instance_count: chunk.len() as u32,
|
||
is_3d_mesh_edge: false,
|
||
const_bind_group: Some(bind_group.clone()),
|
||
})
|
||
.collect();
|
||
}
|
||
|
||
let _ = const_bgl;
|
||
const MAX_PACKED_INSTANCES: usize =
|
||
268_435_456 / std::mem::size_of::<PackedWireInstance>();
|
||
let per: Vec<Vec<PackedWireInstance>> = wires
|
||
.iter()
|
||
.map(|wire| {
|
||
emit_wire_packed(wire, color, wire_draw_depth(wire, depth_map))
|
||
})
|
||
.collect();
|
||
let mut instances = Vec::with_capacity(per.iter().map(Vec::len).sum());
|
||
for mut items in per {
|
||
instances.append(&mut items);
|
||
}
|
||
instances
|
||
.chunks(MAX_PACKED_INSTANCES)
|
||
.map(|chunk| Self {
|
||
instance_buffer: instance_buffer_mapped(
|
||
device,
|
||
"wire.highlight.compat.ibuf",
|
||
chunk,
|
||
),
|
||
first_instance: 0,
|
||
instance_count: chunk.len() as u32,
|
||
is_3d_mesh_edge: false,
|
||
const_bind_group: None,
|
||
})
|
||
.collect()
|
||
}
|
||
|
||
/// Equivalent of [`from_run`] for an already partitioned set of borrowed
|
||
/// wires. Used when one arena partition exceeds the 256 MB buffer limit:
|
||
/// the compatible partition stays patchable while only the oversized side
|
||
/// uses chunked resident buffers.
|
||
pub fn from_run_refs(
|
||
device: &wgpu::Device,
|
||
wires: &[&WireModel],
|
||
depth_map: &rustc_hash::FxHashMap<u64, [f32; 2]>,
|
||
mesh_edge: bool,
|
||
const_bgl: Option<&wgpu::BindGroupLayout>,
|
||
) -> Vec<Self> {
|
||
let Some(const_bgl) = const_bgl else {
|
||
const MAX_INSTANCES: usize =
|
||
268_435_456 / std::mem::size_of::<PackedWireInstance>();
|
||
use crate::par::prelude::*;
|
||
let per: Vec<Vec<PackedWireInstance>> = wires
|
||
.par_iter()
|
||
.map(|&wire| {
|
||
let depth = if mesh_edge {
|
||
0.0
|
||
} else {
|
||
wire_draw_depth(wire, depth_map)
|
||
};
|
||
emit_wire_packed(wire, wire.color, depth)
|
||
})
|
||
.collect();
|
||
let mut instances =
|
||
Vec::with_capacity(per.iter().map(Vec::len).sum());
|
||
for mut items in per {
|
||
instances.append(&mut items);
|
||
}
|
||
return instances
|
||
.chunks(MAX_INSTANCES)
|
||
.map(|chunk| Self {
|
||
instance_buffer: instance_buffer_mapped(
|
||
device,
|
||
"wire.run.hybrid.compat.ibuf",
|
||
chunk,
|
||
),
|
||
first_instance: 0,
|
||
instance_count: chunk.len() as u32,
|
||
is_3d_mesh_edge: mesh_edge,
|
||
const_bind_group: None,
|
||
})
|
||
.collect();
|
||
};
|
||
const MAX_INSTANCES: usize =
|
||
268_435_456 / std::mem::size_of::<WireInstance>();
|
||
use crate::par::prelude::*;
|
||
let per: Vec<(Vec<WireInstance>, WireConst)> = wires
|
||
.par_iter()
|
||
.enumerate()
|
||
.map(|(idx, &wire)| {
|
||
let depth = if mesh_edge {
|
||
0.0
|
||
} else {
|
||
wire_draw_depth(wire, depth_map)
|
||
};
|
||
emit_wire_native(wire, idx as u32, wire.color, depth)
|
||
})
|
||
.collect();
|
||
let mut instances: Vec<WireInstance> =
|
||
Vec::with_capacity(per.iter().map(|(items, _)| items.len()).sum());
|
||
let mut consts = Vec::with_capacity(per.len());
|
||
for (mut items, constant) in per {
|
||
instances.append(&mut items);
|
||
consts.push(constant);
|
||
}
|
||
if instances.is_empty() {
|
||
return Vec::new();
|
||
}
|
||
let bind_group = build_const_bind_group(device, const_bgl, &consts);
|
||
instances
|
||
.chunks(MAX_INSTANCES)
|
||
.map(|chunk| Self {
|
||
instance_buffer: instance_buffer_mapped(device, "wire.run.hybrid.ibuf", chunk),
|
||
first_instance: 0,
|
||
instance_count: chunk.len() as u32,
|
||
is_3d_mesh_edge: mesh_edge,
|
||
const_bind_group: Some(bind_group.clone()),
|
||
})
|
||
.collect()
|
||
}
|
||
|
||
/// Merge a run of WireModels that share scissor + mesh-edge state into one
|
||
/// (or, past the 256 MB GPU limit, a few) instance buffer(s), then stamp
|
||
/// the shared `scissor` / `mesh_edge` onto each so the draw loop treats the
|
||
/// whole run as a single batch.
|
||
///
|
||
/// Unlike [`from_batch`], instance order is **guaranteed** to follow wire
|
||
/// order (parallel `collect` is index-ordered; the flatten is sequential).
|
||
/// The main wire pass depends on that — depth-biased overlap *and* alpha
|
||
/// blending both resolve in submission order, so a reorder would change the
|
||
/// image for transparent / coincident wires.
|
||
pub fn from_run(
|
||
device: &wgpu::Device,
|
||
wires: &[WireModel],
|
||
depth_map: &rustc_hash::FxHashMap<u64, [f32; 2]>,
|
||
mesh_edge: bool,
|
||
const_bgl: Option<&wgpu::BindGroupLayout>,
|
||
) -> Vec<Self> {
|
||
if let Some(const_bgl) = const_bgl {
|
||
const MAX_INSTANCES: usize =
|
||
268_435_456 / std::mem::size_of::<WireInstance>();
|
||
use crate::par::prelude::*;
|
||
// Global `wire_id` = wire index; one shared WireConst buffer for all
|
||
// chunks. Indexed `collect` preserves wire order (the pass relies on
|
||
// submission order for depth-biased / transparent overlap).
|
||
let per: Vec<(Vec<WireInstance>, WireConst)> = wires
|
||
.par_iter()
|
||
.enumerate()
|
||
.map(|(idx, w)| {
|
||
// 3D mesh outline edges are real geometry occluded by true
|
||
// depth — they must NOT take the draw-order z-bias (which
|
||
// pulls 2D wires toward the camera), or the hidden edges of a
|
||
// small / distant mesh peek through its own shaded fill.
|
||
let dd = if mesh_edge { 0.0 } else { wire_draw_depth(w, depth_map) };
|
||
emit_wire_native(w, idx as u32, w.color, dd)
|
||
})
|
||
.collect();
|
||
let mut instances: Vec<WireInstance> =
|
||
Vec::with_capacity(per.iter().map(|(v, _)| v.len()).sum());
|
||
let mut consts: Vec<WireConst> = Vec::with_capacity(per.len());
|
||
for (mut v, c) in per {
|
||
instances.append(&mut v);
|
||
consts.push(c);
|
||
}
|
||
if instances.is_empty() {
|
||
return vec![];
|
||
}
|
||
let bg = build_const_bind_group(device, const_bgl, &consts);
|
||
return instances
|
||
.chunks(MAX_INSTANCES)
|
||
.map(|chunk| {
|
||
let buf = instance_buffer_mapped(device, "wire.run.ibuf", chunk);
|
||
Self {
|
||
instance_buffer: buf,
|
||
first_instance: 0,
|
||
instance_count: chunk.len() as u32,
|
||
is_3d_mesh_edge: mesh_edge,
|
||
const_bind_group: Some(bg.clone()),
|
||
}
|
||
})
|
||
.collect();
|
||
}
|
||
|
||
let _ = const_bgl;
|
||
const MAX_PACKED_INSTANCES: usize =
|
||
268_435_456 / std::mem::size_of::<PackedWireInstance>();
|
||
let per: Vec<Vec<PackedWireInstance>> = wires
|
||
.iter()
|
||
.map(|w| {
|
||
let dd = if mesh_edge { 0.0 } else { wire_draw_depth(w, depth_map) };
|
||
emit_wire_packed(w, w.color, dd)
|
||
})
|
||
.collect();
|
||
let mut instances: Vec<PackedWireInstance> =
|
||
Vec::with_capacity(per.iter().map(Vec::len).sum());
|
||
for mut v in per {
|
||
instances.append(&mut v);
|
||
}
|
||
if instances.is_empty() {
|
||
return vec![];
|
||
}
|
||
instances
|
||
.chunks(MAX_PACKED_INSTANCES)
|
||
.map(|chunk| {
|
||
let buf = instance_buffer_mapped(device, "wire.run.compat.ibuf", chunk);
|
||
Self {
|
||
instance_buffer: buf,
|
||
first_instance: 0,
|
||
instance_count: chunk.len() as u32,
|
||
is_3d_mesh_edge: mesh_edge,
|
||
const_bind_group: None,
|
||
}
|
||
})
|
||
.collect()
|
||
}
|
||
|
||
/// Merge multiple WireModels into GPU instance buffers, chunked to fit the
|
||
/// 256 MB GPU limit. Each wire keeps its own color and pattern — they live
|
||
/// per-instance.
|
||
pub fn from_batch(
|
||
device: &wgpu::Device,
|
||
wires: &[WireModel],
|
||
depth_map: &rustc_hash::FxHashMap<u64, [f32; 2]>,
|
||
const_bgl: Option<&wgpu::BindGroupLayout>,
|
||
) -> Vec<Self> {
|
||
let total_segs: usize = wires.iter().map(|w| w.points.len().saturating_sub(1)).sum();
|
||
if total_segs == 0 {
|
||
return vec![];
|
||
}
|
||
if let Some(const_bgl) = const_bgl {
|
||
// GPU max buffer size is 256 MB; chunk to stay within the limit.
|
||
const MAX_INSTANCES: usize =
|
||
268_435_456 / std::mem::size_of::<WireInstance>();
|
||
use crate::par::prelude::*;
|
||
// `block_cache` groups wires by style upstream; order within a batch
|
||
// doesn't affect correctness, but indexed `collect` gives each wire a
|
||
// stable `wire_id` into the shared WireConst buffer.
|
||
let per: Vec<(Vec<WireInstance>, WireConst)> = wires
|
||
.par_iter()
|
||
.enumerate()
|
||
.map(|(idx, w)| {
|
||
emit_wire_native(w, idx as u32, w.color, wire_draw_depth(w, depth_map))
|
||
})
|
||
.collect();
|
||
let mut instances: Vec<WireInstance> =
|
||
Vec::with_capacity(per.iter().map(|(v, _)| v.len()).sum());
|
||
let mut consts: Vec<WireConst> = Vec::with_capacity(per.len());
|
||
for (mut v, c) in per {
|
||
instances.append(&mut v);
|
||
consts.push(c);
|
||
}
|
||
if instances.is_empty() {
|
||
return vec![];
|
||
}
|
||
let bg = build_const_bind_group(device, const_bgl, &consts);
|
||
return instances
|
||
.chunks(MAX_INSTANCES)
|
||
.enumerate()
|
||
.map(|(i, chunk)| {
|
||
let label = format!("wire.batch.ibuf.{i}");
|
||
let instance_buffer = instance_buffer_mapped(device, &label, chunk);
|
||
Self {
|
||
instance_buffer,
|
||
first_instance: 0,
|
||
instance_count: chunk.len() as u32,
|
||
is_3d_mesh_edge: false,
|
||
const_bind_group: Some(bg.clone()),
|
||
}
|
||
})
|
||
.collect();
|
||
}
|
||
|
||
let _ = const_bgl;
|
||
const MAX_PACKED_INSTANCES: usize =
|
||
268_435_456 / std::mem::size_of::<PackedWireInstance>();
|
||
let instances: Vec<PackedWireInstance> = wires
|
||
.iter()
|
||
.flat_map(|w| emit_wire_packed(w, w.color, wire_draw_depth(w, depth_map)))
|
||
.collect();
|
||
if instances.is_empty() {
|
||
return vec![];
|
||
}
|
||
instances
|
||
.chunks(MAX_PACKED_INSTANCES)
|
||
.enumerate()
|
||
.map(|(i, chunk)| {
|
||
let label = format!("wire.batch.compat.ibuf.{i}");
|
||
let instance_buffer = instance_buffer_mapped(device, &label, chunk);
|
||
Self {
|
||
instance_buffer,
|
||
first_instance: 0,
|
||
instance_count: chunk.len() as u32,
|
||
is_3d_mesh_edge: false,
|
||
const_bind_group: None,
|
||
}
|
||
})
|
||
.collect()
|
||
}
|
||
}
|