Implemented SVG support in iced_wgpu.
This commit is contained in:
Malte Veerman
parent
c1b9f66525
commit
8032428428
@ -17,3 +17,4 @@ image = "0.22"
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glam = "0.8"
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font-kit = "0.4"
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log = "0.4"
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resvg = { version = "0.8", features = ["raqote-backend"] }
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@ -28,11 +28,13 @@ mod image;
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mod primitive;
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mod quad;
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mod renderer;
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mod svg;
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mod text;
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mod transformation;
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pub(crate) use crate::image::Image;
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pub(crate) use quad::Quad;
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pub(crate) use svg::Svg;
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pub(crate) use transformation::Transformation;
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pub use primitive::Primitive;
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@ -3,6 +3,8 @@ use iced_native::{
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VerticalAlignment,
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};
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use crate::svg;
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/// A rendering primitive.
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#[derive(Debug, Clone)]
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pub enum Primitive {
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@ -46,6 +48,13 @@ pub enum Primitive {
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/// The bounds of the image
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bounds: Rectangle,
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},
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/// A svg icon primitive
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Svg {
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/// The handle of the icon
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handle: svg::Handle,
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/// The bounds of the icon
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bounds: Rectangle,
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},
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/// A clip primitive
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Clip {
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/// The bounds of the clip
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@ -1,4 +1,4 @@
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use crate::{quad, text, Image, Primitive, Quad, Transformation};
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use crate::{quad, text, Image, Primitive, Quad, Svg, Transformation};
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use iced_native::{
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renderer::{Debugger, Windowed},
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Background, Color, Layout, MouseCursor, Point, Rectangle, Vector, Widget,
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@ -23,6 +23,7 @@ pub struct Renderer {
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queue: Queue,
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quad_pipeline: quad::Pipeline,
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image_pipeline: crate::image::Pipeline,
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svg_pipeline: crate::svg::Pipeline,
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text_pipeline: text::Pipeline,
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}
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@ -31,6 +32,7 @@ struct Layer<'a> {
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offset: Vector<u32>,
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quads: Vec<Quad>,
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images: Vec<Image>,
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svgs: Vec<Svg>,
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text: Vec<wgpu_glyph::Section<'a>>,
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}
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@ -41,6 +43,7 @@ impl<'a> Layer<'a> {
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offset,
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quads: Vec::new(),
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images: Vec::new(),
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svgs: Vec::new(),
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text: Vec::new(),
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}
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}
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@ -64,12 +67,14 @@ impl Renderer {
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let text_pipeline = text::Pipeline::new(&mut device);
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let quad_pipeline = quad::Pipeline::new(&mut device);
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let image_pipeline = crate::image::Pipeline::new(&mut device);
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let svg_pipeline = crate::svg::Pipeline::new(&mut device);
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Self {
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device,
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queue,
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quad_pipeline,
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image_pipeline,
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svg_pipeline,
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text_pipeline,
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}
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}
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@ -128,6 +133,7 @@ impl Renderer {
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self.queue.submit(&[encoder.finish()]);
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self.image_pipeline.trim_cache();
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self.svg_pipeline.trim_cache();
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*mouse_cursor
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}
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@ -237,6 +243,13 @@ impl Renderer {
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scale: [bounds.width, bounds.height],
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});
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}
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Primitive::Svg { handle, bounds } => {
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layer.svgs.push(Svg {
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handle: handle.clone(),
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position: [bounds.x, bounds.y],
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scale: [bounds.width, bounds.height],
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})
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},
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Primitive::Clip {
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bounds,
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offset,
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@ -345,6 +358,25 @@ impl Renderer {
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);
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}
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if layer.svgs.len() > 0 {
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let translated = transformation
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* Transformation::translate(
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-(layer.offset.x as f32),
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-(layer.offset.y as f32),
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);
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self.svg_pipeline.draw(
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&mut self.device,
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encoder,
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&layer.svgs,
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translated,
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bounds,
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target,
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(dpi * 96.0) as u16,
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(dpi * 20.0) as u16,
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);
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}
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if layer.text.len() > 0 {
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for text in layer.text.iter() {
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// Target physical coordinates directly to avoid blurry text
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595
wgpu/src/svg.rs
Normal file
595
wgpu/src/svg.rs
Normal file
@ -0,0 +1,595 @@
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use crate::Transformation;
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use iced_native::{Hasher, Rectangle};
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use std::{
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cell::RefCell,
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collections::{HashMap, HashSet},
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hash::{Hash, Hasher as _},
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mem,
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path::PathBuf,
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rc::Rc,
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};
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use std::fmt::Debug;
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#[derive(Debug)]
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pub struct Pipeline {
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cache: RefCell<Cache>,
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pipeline: wgpu::RenderPipeline,
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uniforms: wgpu::Buffer,
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vertices: wgpu::Buffer,
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indices: wgpu::Buffer,
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instances: wgpu::Buffer,
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constants: wgpu::BindGroup,
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texture_layout: wgpu::BindGroupLayout,
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}
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impl Pipeline {
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pub fn new(device: &wgpu::Device) -> Self {
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let sampler = device.create_sampler(&wgpu::SamplerDescriptor {
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address_mode_u: wgpu::AddressMode::ClampToEdge,
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address_mode_v: wgpu::AddressMode::ClampToEdge,
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address_mode_w: wgpu::AddressMode::ClampToEdge,
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mag_filter: wgpu::FilterMode::Linear,
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min_filter: wgpu::FilterMode::Linear,
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mipmap_filter: wgpu::FilterMode::Linear,
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lod_min_clamp: -100.0,
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lod_max_clamp: 100.0,
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compare_function: wgpu::CompareFunction::Always,
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});
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let constant_layout =
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device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
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bindings: &[
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wgpu::BindGroupLayoutBinding {
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binding: 0,
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visibility: wgpu::ShaderStage::VERTEX,
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ty: wgpu::BindingType::UniformBuffer { dynamic: false },
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},
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wgpu::BindGroupLayoutBinding {
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binding: 1,
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visibility: wgpu::ShaderStage::FRAGMENT,
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ty: wgpu::BindingType::Sampler,
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},
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],
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});
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let uniforms = Uniforms {
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transform: Transformation::identity().into(),
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};
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let uniforms_buffer = device
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.create_buffer_mapped(
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1,
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wgpu::BufferUsage::UNIFORM | wgpu::BufferUsage::COPY_DST,
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)
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.fill_from_slice(&[uniforms]);
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let constant_bind_group =
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device.create_bind_group(&wgpu::BindGroupDescriptor {
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layout: &constant_layout,
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bindings: &[
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wgpu::Binding {
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binding: 0,
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resource: wgpu::BindingResource::Buffer {
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buffer: &uniforms_buffer,
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range: 0..std::mem::size_of::<Uniforms>() as u64,
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},
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},
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wgpu::Binding {
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binding: 1,
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resource: wgpu::BindingResource::Sampler(&sampler),
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},
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],
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});
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let texture_layout =
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device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
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bindings: &[wgpu::BindGroupLayoutBinding {
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binding: 0,
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visibility: wgpu::ShaderStage::FRAGMENT,
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ty: wgpu::BindingType::SampledTexture {
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multisampled: false,
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dimension: wgpu::TextureViewDimension::D2,
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},
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}],
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});
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let layout =
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device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
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bind_group_layouts: &[&constant_layout, &texture_layout],
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});
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let vs = include_bytes!("shader/image.vert.spv");
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let vs_module = device.create_shader_module(
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&wgpu::read_spirv(std::io::Cursor::new(&vs[..]))
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.expect("Read image vertex shader as SPIR-V"),
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);
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let fs = include_bytes!("shader/image.frag.spv");
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let fs_module = device.create_shader_module(
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&wgpu::read_spirv(std::io::Cursor::new(&fs[..]))
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.expect("Read image fragment shader as SPIR-V"),
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);
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let pipeline =
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device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
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layout: &layout,
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vertex_stage: wgpu::ProgrammableStageDescriptor {
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module: &vs_module,
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entry_point: "main",
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},
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fragment_stage: Some(wgpu::ProgrammableStageDescriptor {
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module: &fs_module,
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entry_point: "main",
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}),
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rasterization_state: Some(wgpu::RasterizationStateDescriptor {
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front_face: wgpu::FrontFace::Cw,
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cull_mode: wgpu::CullMode::None,
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depth_bias: 0,
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depth_bias_slope_scale: 0.0,
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depth_bias_clamp: 0.0,
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}),
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primitive_topology: wgpu::PrimitiveTopology::TriangleList,
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color_states: &[wgpu::ColorStateDescriptor {
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format: wgpu::TextureFormat::Bgra8UnormSrgb,
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color_blend: wgpu::BlendDescriptor {
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src_factor: wgpu::BlendFactor::SrcAlpha,
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dst_factor: wgpu::BlendFactor::OneMinusSrcAlpha,
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operation: wgpu::BlendOperation::Add,
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},
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alpha_blend: wgpu::BlendDescriptor {
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src_factor: wgpu::BlendFactor::One,
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dst_factor: wgpu::BlendFactor::OneMinusSrcAlpha,
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operation: wgpu::BlendOperation::Add,
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},
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write_mask: wgpu::ColorWrite::ALL,
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}],
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depth_stencil_state: None,
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index_format: wgpu::IndexFormat::Uint16,
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vertex_buffers: &[
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wgpu::VertexBufferDescriptor {
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stride: mem::size_of::<Vertex>() as u64,
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step_mode: wgpu::InputStepMode::Vertex,
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attributes: &[wgpu::VertexAttributeDescriptor {
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shader_location: 0,
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format: wgpu::VertexFormat::Float2,
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offset: 0,
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}],
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},
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wgpu::VertexBufferDescriptor {
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stride: mem::size_of::<Instance>() as u64,
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step_mode: wgpu::InputStepMode::Instance,
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attributes: &[
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wgpu::VertexAttributeDescriptor {
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shader_location: 1,
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format: wgpu::VertexFormat::Float2,
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offset: 0,
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},
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wgpu::VertexAttributeDescriptor {
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shader_location: 2,
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format: wgpu::VertexFormat::Float2,
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offset: 4 * 2,
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},
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],
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},
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],
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sample_count: 1,
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sample_mask: !0,
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alpha_to_coverage_enabled: false,
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});
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let vertices = device
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.create_buffer_mapped(QUAD_VERTS.len(), wgpu::BufferUsage::VERTEX)
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.fill_from_slice(&QUAD_VERTS);
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let indices = device
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.create_buffer_mapped(QUAD_INDICES.len(), wgpu::BufferUsage::INDEX)
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.fill_from_slice(&QUAD_INDICES);
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let instances = device.create_buffer(&wgpu::BufferDescriptor {
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size: mem::size_of::<Instance>() as u64,
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usage: wgpu::BufferUsage::VERTEX | wgpu::BufferUsage::COPY_DST,
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});
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Pipeline {
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cache: RefCell::new(Cache::new()),
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pipeline,
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uniforms: uniforms_buffer,
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vertices,
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indices,
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instances,
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constants: constant_bind_group,
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texture_layout,
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}
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}
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fn load(&self, handle: &Handle) {
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if !self.cache.borrow().contains(&handle) {
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if !handle.path.is_file() {
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let mem = Memory::NotFound;
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let _ = self.cache.borrow_mut().insert(&handle, mem);
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}
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let mut opt = resvg::Options::default();
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opt.usvg.path = Some(handle.path.clone());
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opt.usvg.dpi = handle.dpi as f64;
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opt.usvg.font_size = handle.font_size as f64;
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let mem = match resvg::usvg::Tree::from_file(&handle.path, &opt.usvg) {
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Ok(tree) => Memory::Host { tree },
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Err(_) => Memory::Invalid
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};
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let _ = self.cache.borrow_mut().insert(&handle, mem);
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}
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}
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pub fn draw(
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&mut self,
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device: &mut wgpu::Device,
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encoder: &mut wgpu::CommandEncoder,
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svgs: &[Svg],
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transformation: Transformation,
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bounds: Rectangle<u32>,
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target: &wgpu::TextureView,
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dpi: u16,
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font_size: u16,
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) {
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let uniforms_buffer = device
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.create_buffer_mapped(1, wgpu::BufferUsage::COPY_SRC)
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.fill_from_slice(&[Uniforms {
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transform: transformation.into(),
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}]);
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encoder.copy_buffer_to_buffer(
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&uniforms_buffer,
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0,
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&self.uniforms,
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0,
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std::mem::size_of::<Uniforms>() as u64,
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);
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// TODO: Batch draw calls using a texture atlas
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// Guillotière[1] by @nical can help us a lot here.
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//
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// [1]: https://github.com/nical/guillotiere
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for svg in svgs {
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let mut handle = svg.handle.clone();
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handle.set_dpi(dpi);
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handle.set_font_size(font_size);
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self.load(&handle);
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if let Some(texture) = self
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.cache
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.borrow_mut()
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.get(&handle)
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.unwrap()
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.upload(device, encoder, &self.texture_layout, svg.scale[0] as u32, svg.scale[1] as u32)
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{
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let instance_buffer = device
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.create_buffer_mapped(1, wgpu::BufferUsage::COPY_SRC)
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.fill_from_slice(&[Instance {
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_position: svg.position,
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_scale: svg.scale,
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}]);
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encoder.copy_buffer_to_buffer(
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&instance_buffer,
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0,
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&self.instances,
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0,
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mem::size_of::<Instance>() as u64,
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);
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{
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let mut render_pass = encoder.begin_render_pass(
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&wgpu::RenderPassDescriptor {
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color_attachments: &[
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wgpu::RenderPassColorAttachmentDescriptor {
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attachment: target,
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resolve_target: None,
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load_op: wgpu::LoadOp::Load,
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store_op: wgpu::StoreOp::Store,
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clear_color: wgpu::Color::TRANSPARENT,
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},
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],
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depth_stencil_attachment: None,
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},
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);
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render_pass.set_pipeline(&self.pipeline);
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render_pass.set_bind_group(0, &self.constants, &[]);
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render_pass.set_bind_group(1, &texture, &[]);
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render_pass.set_index_buffer(&self.indices, 0);
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render_pass.set_vertex_buffers(
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0,
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&[(&self.vertices, 0), (&self.instances, 0)],
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);
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render_pass.set_scissor_rect(
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bounds.x,
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bounds.y,
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bounds.width,
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bounds.height,
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);
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render_pass.draw_indexed(
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0..QUAD_INDICES.len() as u32,
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0,
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0..1 as u32,
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);
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}
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}
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}
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}
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pub fn trim_cache(&mut self) {
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self.cache.borrow_mut().trim();
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}
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}
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#[derive(Debug, Clone, PartialEq)]
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pub struct Handle {
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id: u64,
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path: PathBuf,
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dpi: u16,
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font_size: u16,
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}
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impl Handle {
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/// Returns the unique id of this [`Handle`]
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///
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/// [`Handle`]: struct.Handle.html
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pub fn id(&self) -> u64 {
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self.id
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}
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/// Creates a svg [`Handle`] pointing to the svg icon of the given path.
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///
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/// [`Handle`]: struct.Handle.html
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pub fn from_path<T: Into<PathBuf>>(path: T) -> Handle {
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let path = path.into();
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let dpi = 96;
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let font_size = 20;
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let mut hasher = Hasher::default();
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path.hash(&mut hasher);
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dpi.hash(&mut hasher);
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font_size.hash(&mut hasher);
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Self {
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id: hasher.finish(),
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path,
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dpi,
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font_size,
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}
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}
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|
||||
fn set_dpi(&mut self, dpi: u16) {
|
||||
if self.dpi == dpi {
|
||||
return;
|
||||
}
|
||||
|
||||
self.dpi = dpi;
|
||||
|
||||
let mut hasher = Hasher::default();
|
||||
self.path.hash(&mut hasher);
|
||||
self.dpi.hash(&mut hasher);
|
||||
self.font_size.hash(&mut hasher);
|
||||
|
||||
self.id = hasher.finish();
|
||||
}
|
||||
|
||||
fn set_font_size(&mut self, font_size: u16) {
|
||||
if self.font_size == font_size {
|
||||
return;
|
||||
}
|
||||
|
||||
self.font_size = font_size;
|
||||
|
||||
let mut hasher = Hasher::default();
|
||||
self.path.hash(&mut hasher);
|
||||
self.dpi.hash(&mut hasher);
|
||||
self.font_size.hash(&mut hasher);
|
||||
|
||||
self.id = hasher.finish();
|
||||
}
|
||||
}
|
||||
|
||||
impl Hash for Handle {
|
||||
fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
|
||||
self.id.hash(state);
|
||||
self.dpi.hash(state);
|
||||
self.font_size.hash(state);
|
||||
}
|
||||
}
|
||||
|
||||
enum Memory {
|
||||
Host {
|
||||
tree: resvg::usvg::Tree,
|
||||
},
|
||||
Device {
|
||||
bind_group: Rc<wgpu::BindGroup>,
|
||||
},
|
||||
NotFound,
|
||||
Invalid,
|
||||
}
|
||||
|
||||
impl Memory {
|
||||
fn upload(
|
||||
&mut self,
|
||||
device: &wgpu::Device,
|
||||
encoder: &mut wgpu::CommandEncoder,
|
||||
texture_layout: &wgpu::BindGroupLayout,
|
||||
width: u32,
|
||||
height: u32
|
||||
) -> Option<Rc<wgpu::BindGroup>> {
|
||||
match self {
|
||||
Memory::Host { tree } => {
|
||||
let extent = wgpu::Extent3d {
|
||||
width,
|
||||
height,
|
||||
depth: 1,
|
||||
};
|
||||
|
||||
let texture = device.create_texture(&wgpu::TextureDescriptor {
|
||||
size: extent,
|
||||
array_layer_count: 1,
|
||||
mip_level_count: 1,
|
||||
sample_count: 1,
|
||||
dimension: wgpu::TextureDimension::D2,
|
||||
format: wgpu::TextureFormat::Bgra8UnormSrgb,
|
||||
usage: wgpu::TextureUsage::COPY_DST
|
||||
| wgpu::TextureUsage::SAMPLED,
|
||||
});
|
||||
|
||||
let mut canvas = resvg::raqote::DrawTarget::new(width as i32, height as i32);
|
||||
let opt = resvg::Options::default();
|
||||
let screen_size = resvg::ScreenSize::new(width, height).unwrap();
|
||||
resvg::backend_raqote::render_to_canvas(tree, &opt, screen_size, &mut canvas);
|
||||
let slice = canvas.get_data();
|
||||
let temp_buf = device
|
||||
.create_buffer_mapped(
|
||||
slice.len(),
|
||||
wgpu::BufferUsage::COPY_SRC,
|
||||
)
|
||||
.fill_from_slice(slice);
|
||||
|
||||
encoder.copy_buffer_to_texture(
|
||||
wgpu::BufferCopyView {
|
||||
buffer: &temp_buf,
|
||||
offset: 0,
|
||||
row_pitch: width * 4,
|
||||
image_height: height,
|
||||
},
|
||||
wgpu::TextureCopyView {
|
||||
texture: &texture,
|
||||
array_layer: 0,
|
||||
mip_level: 0,
|
||||
origin: wgpu::Origin3d {
|
||||
x: 0.0,
|
||||
y: 0.0,
|
||||
z: 0.0,
|
||||
},
|
||||
},
|
||||
extent,
|
||||
);
|
||||
|
||||
let bind_group =
|
||||
device.create_bind_group(&wgpu::BindGroupDescriptor {
|
||||
layout: texture_layout,
|
||||
bindings: &[wgpu::Binding {
|
||||
binding: 0,
|
||||
resource: wgpu::BindingResource::TextureView(
|
||||
&texture.create_default_view(),
|
||||
),
|
||||
}],
|
||||
});
|
||||
|
||||
let bind_group = Rc::new(bind_group);
|
||||
|
||||
*self = Memory::Device {
|
||||
bind_group: bind_group.clone(),
|
||||
};
|
||||
|
||||
Some(bind_group)
|
||||
}
|
||||
Memory::Device { bind_group, .. } => Some(bind_group.clone()),
|
||||
Memory::NotFound => None,
|
||||
Memory::Invalid => None,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Debug for Memory {
|
||||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> Result<(), std::fmt::Error> {
|
||||
match self {
|
||||
Memory::Host { .. } => write!(f, "Memory::Host"),
|
||||
Memory::Device { .. } => write!(f, "Memory::Device"),
|
||||
Memory::NotFound => write!(f, "Memory::NotFound"),
|
||||
Memory::Invalid => write!(f, "Memory::Invalid"),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
struct Cache {
|
||||
map: HashMap<u64, Memory>,
|
||||
hits: HashSet<u64>,
|
||||
}
|
||||
|
||||
impl Cache {
|
||||
fn new() -> Self {
|
||||
Self {
|
||||
map: HashMap::new(),
|
||||
hits: HashSet::new(),
|
||||
}
|
||||
}
|
||||
|
||||
fn contains(&self, handle: &Handle) -> bool {
|
||||
self.map.contains_key(&handle.id())
|
||||
}
|
||||
|
||||
fn get(&mut self, handle: &Handle) -> Option<&mut Memory> {
|
||||
let _ = self.hits.insert(handle.id());
|
||||
|
||||
self.map.get_mut(&handle.id())
|
||||
}
|
||||
|
||||
fn insert(&mut self, handle: &Handle, memory: Memory) {
|
||||
let _ = self.map.insert(handle.id(), memory);
|
||||
}
|
||||
|
||||
fn trim(&mut self) {
|
||||
let hits = &self.hits;
|
||||
|
||||
self.map.retain(|k, _| hits.contains(k));
|
||||
self.hits.clear();
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
pub struct Svg {
|
||||
pub handle: Handle,
|
||||
pub position: [f32; 2],
|
||||
pub scale: [f32; 2],
|
||||
}
|
||||
|
||||
#[repr(C)]
|
||||
#[derive(Clone, Copy)]
|
||||
pub struct Vertex {
|
||||
_position: [f32; 2],
|
||||
}
|
||||
|
||||
const QUAD_INDICES: [u16; 6] = [0, 1, 2, 0, 2, 3];
|
||||
|
||||
const QUAD_VERTS: [Vertex; 4] = [
|
||||
Vertex {
|
||||
_position: [0.0, 0.0],
|
||||
},
|
||||
Vertex {
|
||||
_position: [1.0, 0.0],
|
||||
},
|
||||
Vertex {
|
||||
_position: [1.0, 1.0],
|
||||
},
|
||||
Vertex {
|
||||
_position: [0.0, 1.0],
|
||||
},
|
||||
];
|
||||
|
||||
#[repr(C)]
|
||||
#[derive(Clone, Copy)]
|
||||
struct Instance {
|
||||
_position: [f32; 2],
|
||||
_scale: [f32; 2],
|
||||
}
|
||||
|
||||
#[repr(C)]
|
||||
#[derive(Debug, Clone, Copy)]
|
||||
struct Uniforms {
|
||||
transform: [f32; 16],
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user