forked from 1b-agent/opencadstudio-upstream
Hakan SevenandClaude Opus 4.8
66f7d24bc9
Add a transparency_enable uniform read by the wire shader: when the new TPY pill is off, every line is forced opaque; when on, baked entity transparency shows through. Toggling is a uniform write, no retessellate (same mechanism as the lineweight-display toggle). Pill is toggleable from the status-bar customization menu. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
51 lines
1.9 KiB
Rust
51 lines
1.9 KiB
Rust
use crate::scene::camera::Camera;
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use iced::Rectangle;
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#[derive(Copy, Clone, Debug, bytemuck::Pod, bytemuck::Zeroable)]
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#[repr(C)]
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pub struct Uniforms {
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pub view_proj: glam::Mat4,
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pub camera_pos: glam::Vec4,
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pub viewport_size: [f32; 2],
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/// World units per screen pixel at the current zoom. Used by the
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/// hatch shader to substitute solid fill when pattern line spacing
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/// falls below ~2 px (Phase 3.3 LOD).
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pub world_per_pixel: f32,
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/// LWDISPLAY toggle (1.0 = show lineweights, 0.0 = force 1 px).
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/// Read by the wire shader so the toggle does not require a retessellate.
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pub lwdisplay_enable: f32,
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/// 1.0 → mesh fragment shader replaces the interpolated vertex
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/// normal with `normalize(cross(dpdx(pos), dpdy(pos)))` so each
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/// triangle gets a uniform shade (FlatShaded mode); 0.0 → keeps the
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/// per-vertex normal interpolation (GouraudShaded-style).
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pub flat_shade: f32,
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/// Transparency-display toggle (1.0 = honour entity transparency,
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/// 0.0 = force opaque). Read by the wire shader so the toggle does not
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/// require a retessellate.
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pub transparency_enable: f32,
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/// Pads the struct to 112 B (next multiple of 16) so wgpu's uniform
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/// alignment rules are satisfied.
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pub _pad: [f32; 2],
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}
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impl Uniforms {
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pub fn new(camera: &Camera, bounds: Rectangle, lwdisplay_enable: bool) -> Self {
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let half_h = camera.ortho_size();
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let world_per_pixel = if bounds.height > 0.0 {
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(2.0 * half_h) / bounds.height
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} else {
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0.0
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};
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Self {
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view_proj: camera.view_proj(bounds),
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camera_pos: camera.position_vec4(),
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viewport_size: [bounds.width, bounds.height],
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world_per_pixel,
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lwdisplay_enable: if lwdisplay_enable { 1.0 } else { 0.0 },
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flat_shade: 0.0,
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transparency_enable: 1.0,
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_pad: [0.0; 2],
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}
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}
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}
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