Merged svg pipeline into image

1 files changed, 0 insertions, 559 deletions

diff --git a/wgpu/src/svg.rs b/wgpu/src/svg.rs
deleted file mode 100644
index f2161489..00000000
--- a/wgpu/src/svg.rs
+++ /dev/null
@@ -1,559 +0,0 @@
-use crate::Transformation;
-use iced_native::{Hasher, Rectangle};
-
-use std::{
-    cell::RefCell,
-    collections::{HashMap, HashSet},
-    fmt::Debug,
-    hash::{Hash, Hasher as _},
-    mem,
-    path::PathBuf,
-    rc::Rc,
-    u32,
-};
-
-#[derive(Debug)]
-pub struct Pipeline {
-    cache: RefCell<Cache>,
-
-    pipeline: wgpu::RenderPipeline,
-    uniforms: wgpu::Buffer,
-    vertices: wgpu::Buffer,
-    indices: wgpu::Buffer,
-    instances: wgpu::Buffer,
-    constants: wgpu::BindGroup,
-    texture_layout: wgpu::BindGroupLayout,
-}
-
-impl Pipeline {
-    pub fn new(device: &wgpu::Device) -> Self {
-        let sampler = device.create_sampler(&wgpu::SamplerDescriptor {
-            address_mode_u: wgpu::AddressMode::ClampToEdge,
-            address_mode_v: wgpu::AddressMode::ClampToEdge,
-            address_mode_w: wgpu::AddressMode::ClampToEdge,
-            mag_filter: wgpu::FilterMode::Linear,
-            min_filter: wgpu::FilterMode::Linear,
-            mipmap_filter: wgpu::FilterMode::Linear,
-            lod_min_clamp: -100.0,
-            lod_max_clamp: 100.0,
-            compare_function: wgpu::CompareFunction::Always,
-        });
-
-        let constant_layout =
-            device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
-                bindings: &[
-                    wgpu::BindGroupLayoutBinding {
-                        binding: 0,
-                        visibility: wgpu::ShaderStage::VERTEX,
-                        ty: wgpu::BindingType::UniformBuffer { dynamic: false },
-                    },
-                    wgpu::BindGroupLayoutBinding {
-                        binding: 1,
-                        visibility: wgpu::ShaderStage::FRAGMENT,
-                        ty: wgpu::BindingType::Sampler,
-                    },
-                ],
-            });
-
-        let uniforms = Uniforms {
-            transform: Transformation::identity().into(),
-        };
-
-        let uniforms_buffer = device
-            .create_buffer_mapped(
-                1,
-                wgpu::BufferUsage::UNIFORM | wgpu::BufferUsage::COPY_DST,
-            )
-            .fill_from_slice(&[uniforms]);
-
-        let constant_bind_group =
-            device.create_bind_group(&wgpu::BindGroupDescriptor {
-                layout: &constant_layout,
-                bindings: &[
-                    wgpu::Binding {
-                        binding: 0,
-                        resource: wgpu::BindingResource::Buffer {
-                            buffer: &uniforms_buffer,
-                            range: 0..std::mem::size_of::<Uniforms>() as u64,
-                        },
-                    },
-                    wgpu::Binding {
-                        binding: 1,
-                        resource: wgpu::BindingResource::Sampler(&sampler),
-                    },
-                ],
-            });
-
-        let texture_layout =
-            device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
-                bindings: &[wgpu::BindGroupLayoutBinding {
-                    binding: 0,
-                    visibility: wgpu::ShaderStage::FRAGMENT,
-                    ty: wgpu::BindingType::SampledTexture {
-                        multisampled: false,
-                        dimension: wgpu::TextureViewDimension::D2,
-                    },
-                }],
-            });
-
-        let layout =
-            device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
-                bind_group_layouts: &[&constant_layout, &texture_layout],
-            });
-
-        let vs = include_bytes!("shader/image.vert.spv");
-        let vs_module = device.create_shader_module(
-            &wgpu::read_spirv(std::io::Cursor::new(&vs[..]))
-                .expect("Read image vertex shader as SPIR-V"),
-        );
-
-        let fs = include_bytes!("shader/image.frag.spv");
-        let fs_module = device.create_shader_module(
-            &wgpu::read_spirv(std::io::Cursor::new(&fs[..]))
-                .expect("Read image fragment shader as SPIR-V"),
-        );
-
-        let pipeline =
-            device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
-                layout: &layout,
-                vertex_stage: wgpu::ProgrammableStageDescriptor {
-                    module: &vs_module,
-                    entry_point: "main",
-                },
-                fragment_stage: Some(wgpu::ProgrammableStageDescriptor {
-                    module: &fs_module,
-                    entry_point: "main",
-                }),
-                rasterization_state: Some(wgpu::RasterizationStateDescriptor {
-                    front_face: wgpu::FrontFace::Cw,
-                    cull_mode: wgpu::CullMode::None,
-                    depth_bias: 0,
-                    depth_bias_slope_scale: 0.0,
-                    depth_bias_clamp: 0.0,
-                }),
-                primitive_topology: wgpu::PrimitiveTopology::TriangleList,
-                color_states: &[wgpu::ColorStateDescriptor {
-                    format: wgpu::TextureFormat::Bgra8UnormSrgb,
-                    color_blend: wgpu::BlendDescriptor {
-                        src_factor: wgpu::BlendFactor::SrcAlpha,
-                        dst_factor: wgpu::BlendFactor::OneMinusSrcAlpha,
-                        operation: wgpu::BlendOperation::Add,
-                    },
-                    alpha_blend: wgpu::BlendDescriptor {
-                        src_factor: wgpu::BlendFactor::One,
-                        dst_factor: wgpu::BlendFactor::OneMinusSrcAlpha,
-                        operation: wgpu::BlendOperation::Add,
-                    },
-                    write_mask: wgpu::ColorWrite::ALL,
-                }],
-                depth_stencil_state: None,
-                index_format: wgpu::IndexFormat::Uint16,
-                vertex_buffers: &[
-                    wgpu::VertexBufferDescriptor {
-                        stride: mem::size_of::<Vertex>() as u64,
-                        step_mode: wgpu::InputStepMode::Vertex,
-                        attributes: &[wgpu::VertexAttributeDescriptor {
-                            shader_location: 0,
-                            format: wgpu::VertexFormat::Float2,
-                            offset: 0,
-                        }],
-                    },
-                    wgpu::VertexBufferDescriptor {
-                        stride: mem::size_of::<Instance>() as u64,
-                        step_mode: wgpu::InputStepMode::Instance,
-                        attributes: &[
-                            wgpu::VertexAttributeDescriptor {
-                                shader_location: 1,
-                                format: wgpu::VertexFormat::Float2,
-                                offset: 0,
-                            },
-                            wgpu::VertexAttributeDescriptor {
-                                shader_location: 2,
-                                format: wgpu::VertexFormat::Float2,
-                                offset: 4 * 2,
-                            },
-                        ],
-                    },
-                ],
-                sample_count: 1,
-                sample_mask: !0,
-                alpha_to_coverage_enabled: false,
-            });
-
-        let vertices = device
-            .create_buffer_mapped(QUAD_VERTS.len(), wgpu::BufferUsage::VERTEX)
-            .fill_from_slice(&QUAD_VERTS);
-
-        let indices = device
-            .create_buffer_mapped(QUAD_INDICES.len(), wgpu::BufferUsage::INDEX)
-            .fill_from_slice(&QUAD_INDICES);
-
-        let instances = device.create_buffer(&wgpu::BufferDescriptor {
-            size: mem::size_of::<Instance>() as u64,
-            usage: wgpu::BufferUsage::VERTEX | wgpu::BufferUsage::COPY_DST,
-        });
-
-        Pipeline {
-            cache: RefCell::new(Cache::new()),
-
-            pipeline,
-            uniforms: uniforms_buffer,
-            vertices,
-            indices,
-            instances,
-            constants: constant_bind_group,
-            texture_layout,
-        }
-    }
-
-    fn load(&self, handle: &Handle) {
-        if !self.cache.borrow().contains(&handle) {
-            if !handle.path.is_file() {
-                let mem = Memory::NotFound;
-
-                let _ = self.cache.borrow_mut().insert(&handle, mem);
-            }
-
-            let mut opt = resvg::Options::default();
-            opt.usvg.path = Some(handle.path.clone());
-
-            let mem =
-                match resvg::usvg::Tree::from_file(&handle.path, &opt.usvg) {
-                    Ok(tree) => Memory::Host { tree },
-                    Err(_) => Memory::Invalid,
-                };
-
-            let _ = self.cache.borrow_mut().insert(&handle, mem);
-        }
-    }
-
-    pub fn draw(
-        &mut self,
-        device: &mut wgpu::Device,
-        encoder: &mut wgpu::CommandEncoder,
-        svgs: &[Svg],
-        transformation: Transformation,
-        bounds: Rectangle<u32>,
-        target: &wgpu::TextureView,
-        dpi: f32,
-    ) {
-        let uniforms_buffer = device
-            .create_buffer_mapped(1, wgpu::BufferUsage::COPY_SRC)
-            .fill_from_slice(&[Uniforms {
-                transform: transformation.into(),
-            }]);
-
-        encoder.copy_buffer_to_buffer(
-            &uniforms_buffer,
-            0,
-            &self.uniforms,
-            0,
-            std::mem::size_of::<Uniforms>() as u64,
-        );
-
-        // TODO: Batch draw calls using a texture atlas
-        // Guillotière[1] by @nical can help us a lot here.
-        //
-        // [1]: https://github.com/nical/guillotiere
-        for svg in svgs {
-            self.load(&svg.handle);
-
-            if let Some(texture) =
-                self.cache.borrow_mut().get(&svg.handle).unwrap().upload(
-                    device,
-                    encoder,
-                    &self.texture_layout,
-                    (svg.scale[0] * dpi) as u32,
-                    (svg.scale[1] * dpi) as u32,
-                )
-            {
-                let instance_buffer = device
-                    .create_buffer_mapped(1, wgpu::BufferUsage::COPY_SRC)
-                    .fill_from_slice(&[Instance {
-                        _position: svg.position,
-                        _scale: svg.scale,
-                    }]);
-
-                encoder.copy_buffer_to_buffer(
-                    &instance_buffer,
-                    0,
-                    &self.instances,
-                    0,
-                    mem::size_of::<Instance>() as u64,
-                );
-
-                {
-                    let mut render_pass = encoder.begin_render_pass(
-                        &wgpu::RenderPassDescriptor {
-                            color_attachments: &[
-                                wgpu::RenderPassColorAttachmentDescriptor {
-                                    attachment: target,
-                                    resolve_target: None,
-                                    load_op: wgpu::LoadOp::Load,
-                                    store_op: wgpu::StoreOp::Store,
-                                    clear_color: wgpu::Color::TRANSPARENT,
-                                },
-                            ],
-                            depth_stencil_attachment: None,
-                        },
-                    );
-
-                    render_pass.set_pipeline(&self.pipeline);
-                    render_pass.set_bind_group(0, &self.constants, &[]);
-                    render_pass.set_bind_group(1, &texture, &[]);
-                    render_pass.set_index_buffer(&self.indices, 0);
-                    render_pass.set_vertex_buffers(
-                        0,
-                        &[(&self.vertices, 0), (&self.instances, 0)],
-                    );
-                    render_pass.set_scissor_rect(
-                        bounds.x,
-                        bounds.y,
-                        bounds.width,
-                        bounds.height,
-                    );
-
-                    render_pass.draw_indexed(
-                        0..QUAD_INDICES.len() as u32,
-                        0,
-                        0..1 as u32,
-                    );
-                }
-            }
-        }
-    }
-
-    pub fn trim_cache(&mut self) {
-        self.cache.borrow_mut().trim();
-    }
-}
-
-#[derive(Debug, Clone, PartialEq)]
-pub struct Handle {
-    id: u64,
-    path: PathBuf,
-}
-
-impl Handle {
-    /// Returns the unique id of this [`Handle`]
-    ///
-    /// [`Handle`]: struct.Handle.html
-    pub fn id(&self) -> u64 {
-        self.id
-    }
-
-    /// Creates a svg [`Handle`] pointing to the svg icon of the given path.
-    ///
-    /// [`Handle`]: struct.Handle.html
-    pub fn from_path<T: Into<PathBuf>>(path: T) -> Handle {
-        let path = path.into();
-        let mut hasher = Hasher::default();
-        path.hash(&mut hasher);
-
-        Self {
-            id: hasher.finish(),
-            path,
-        }
-    }
-}
-
-impl Hash for Handle {
-    fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
-        self.id.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 } => {
-                println!("{} {}", width, height);
-
-                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],
-}