971 lines
31 KiB
Rust
971 lines
31 KiB
Rust
#[cfg(feature = "image")]
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mod raster;
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#[cfg(feature = "svg")]
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mod vector;
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#[cfg(feature = "image")]
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use crate::image::raster::Memory;
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use crate::Transformation;
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use iced_native::{image, svg, Rectangle};
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use std::mem;
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#[cfg(any(feature = "image", feature = "svg"))]
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use std::cell::RefCell;
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use guillotiere::{Allocation, AtlasAllocator, Size};
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#[derive(Debug)]
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pub struct Pipeline {
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#[cfg(feature = "image")]
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raster_cache: RefCell<raster::Cache>,
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#[cfg(feature = "svg")]
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vector_cache: RefCell<vector::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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constants: wgpu::BindGroup,
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texture_layout: wgpu::BindGroupLayout,
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texture_array: TextureArray,
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}
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impl Pipeline {
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pub fn new(device: &wgpu::Device, format: wgpu::TextureFormat) -> 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,
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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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wgpu::VertexAttributeDescriptor {
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shader_location: 3,
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format: wgpu::VertexFormat::Float2,
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offset: 4 * 4,
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},
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wgpu::VertexAttributeDescriptor {
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shader_location: 4,
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format: wgpu::VertexFormat::Float2,
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offset: 4 * 6,
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},
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wgpu::VertexAttributeDescriptor {
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shader_location: 5,
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format: wgpu::VertexFormat::Float,
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offset: 4 * 8,
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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 texture_array = TextureArray::new(device);
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Pipeline {
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#[cfg(feature = "image")]
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raster_cache: RefCell::new(raster::Cache::new()),
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#[cfg(feature = "svg")]
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vector_cache: RefCell::new(vector::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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constants: constant_bind_group,
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texture_layout,
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texture_array,
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}
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}
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#[cfg(feature = "image")]
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pub fn dimensions(&self, handle: &image::Handle) -> (u32, u32) {
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let mut cache = self.raster_cache.borrow_mut();
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let memory = cache.load(&handle);
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memory.dimensions()
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}
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#[cfg(feature = "svg")]
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pub fn viewport_dimensions(&self, handle: &svg::Handle) -> (u32, u32) {
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let mut cache = self.vector_cache.borrow_mut();
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let svg = cache.load(&handle);
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svg.viewport_dimensions()
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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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images: &[Image],
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transformation: Transformation,
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bounds: Rectangle<u32>,
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target: &wgpu::TextureView,
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_scale: f32,
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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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let mut instances: Vec<Instance> = Vec::new();
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for image in images {
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match &image.handle {
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Handle::Raster(_handle) => {
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#[cfg(feature = "image")]
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{
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let mut raster_cache = self.raster_cache.borrow_mut();
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if let Memory::Device(allocation) = raster_cache.upload(
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_handle,
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device,
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encoder,
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&mut self.texture_array,
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) {
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add_instances(
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image,
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allocation,
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&mut instances,
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);
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}
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}
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}
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Handle::Vector(_handle) => {
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#[cfg(feature = "svg")]
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{
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let mut vector_cache = self.vector_cache.borrow_mut();
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// Upload rasterized svg to texture atlas
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if let Some(allocation) = vector_cache.upload(
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_handle,
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image.scale,
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_scale,
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device,
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encoder,
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&mut self.texture_array,
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) {
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add_instances(
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image,
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allocation,
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&mut instances,
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);
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}
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}
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}
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}
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}
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let texture = device.create_bind_group(&wgpu::BindGroupDescriptor {
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layout: &self.texture_layout,
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bindings: &[wgpu::Binding {
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binding: 0,
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resource: wgpu::BindingResource::TextureView(
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&self.texture_array.texture.create_default_view(),
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),
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}],
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});
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let instances_buffer = device.create_buffer_mapped(
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instances.len(),
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wgpu::BufferUsage::VERTEX,
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).fill_from_slice(&instances);
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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 {
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r: 0.0,
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g: 0.0,
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b: 0.0,
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a: 0.0,
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},
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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), (&instances_buffer, 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..instances.len() as u32,
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);
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}
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pub fn trim_cache(&mut self) {
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#[cfg(feature = "image")]
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self.raster_cache.borrow_mut().trim(&mut self.texture_array);
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#[cfg(feature = "svg")]
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self.vector_cache.borrow_mut().trim(&mut self.texture_array);
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}
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}
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fn add_instances(
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image: &Image,
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allocation: &ImageAllocation,
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instances: &mut Vec<Instance>,
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) {
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match allocation {
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ImageAllocation::SingleAllocation(allocation) => {
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add_instance(image.position, image.scale, allocation, instances);
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}
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ImageAllocation::MultipleAllocations { mappings, size } => {
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let scaling_x = image.scale[0] / size.0 as f32;
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let scaling_y = image.scale[1] / size.1 as f32;
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for mapping in mappings {
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let allocation = &mapping.allocation;
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let mut position = image.position;
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let mut scale = image.scale;
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position[0] += mapping.src_pos.0 as f32 * scaling_x;
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position[1] += mapping.src_pos.1 as f32 * scaling_y;
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scale[0] = allocation.size().0 as f32 * scaling_x;
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scale[1] = allocation.size().1 as f32 * scaling_y;
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add_instance(position, scale, allocation, instances);
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}
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}
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}
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}
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fn add_instance(
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position: [f32; 2],
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scale: [f32; 2],
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allocation: &ArrayAllocation,
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instances: &mut Vec<Instance>,
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) {
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let x = (allocation.position().0 as f32 + 0.5) / (ATLAS_SIZE as f32);
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let y = (allocation.position().1 as f32 + 0.5) / (ATLAS_SIZE as f32);
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let w = (allocation.size().0 as f32 - 0.5) / (ATLAS_SIZE as f32);
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let h = (allocation.size().1 as f32 - 0.5) / (ATLAS_SIZE as f32);
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let layer = allocation.layer() as f32;
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let instance = Instance {
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_position: position,
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_scale: scale,
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_position_in_atlas: [x, y],
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_scale_in_atlas: [w, h],
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_layer: layer,
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};
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instances.push(instance);
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}
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pub struct Image {
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pub handle: Handle,
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pub position: [f32; 2],
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pub scale: [f32; 2],
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}
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pub enum Handle {
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Raster(image::Handle),
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Vector(svg::Handle),
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}
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#[derive(Debug)]
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pub struct ArrayAllocationMapping {
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src_pos: (u32, u32),
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allocation: ArrayAllocation,
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}
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#[derive(Debug)]
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pub enum ImageAllocation {
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SingleAllocation(ArrayAllocation),
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MultipleAllocations {
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mappings: Vec<ArrayAllocationMapping>,
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size: (u32, u32),
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},
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}
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impl ImageAllocation {
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#[cfg(feature = "image")]
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pub fn size(&self) -> (u32, u32) {
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match self {
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ImageAllocation::SingleAllocation(allocation) => {
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allocation.size()
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}
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ImageAllocation::MultipleAllocations { size, .. } => {
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*size
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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 enum ArrayAllocation {
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AtlasAllocation {
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layer: usize,
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allocation: Allocation,
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},
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WholeLayer {
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layer: usize,
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}
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}
|
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|
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impl ArrayAllocation {
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pub fn size(&self) -> (u32, u32) {
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match self {
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ArrayAllocation::AtlasAllocation { allocation, .. } => {
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let size = allocation.rectangle.size();
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(size.width as u32, size.height as u32)
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}
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ArrayAllocation::WholeLayer { .. } => (ATLAS_SIZE, ATLAS_SIZE)
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}
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}
|
|
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pub fn position(&self) -> (u32, u32) {
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match self {
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ArrayAllocation::AtlasAllocation { allocation, .. } => {
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let min = &allocation.rectangle.min;
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(min.x as u32, min.y as u32)
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}
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ArrayAllocation::WholeLayer { .. } => (0, 0)
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}
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}
|
|
|
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pub fn layer(&self) -> usize {
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match self {
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ArrayAllocation::AtlasAllocation { layer, .. } => *layer,
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ArrayAllocation::WholeLayer { layer } => *layer,
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}
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}
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}
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|
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impl std::fmt::Debug for ArrayAllocation {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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match self {
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ArrayAllocation::AtlasAllocation { layer, .. } => {
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write!(f, "ArrayAllocation::AtlasAllocation {{ layer: {} }}", layer)
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},
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ArrayAllocation::WholeLayer { layer } => {
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write!(f, "ArrayAllocation::WholeLayer {{ layer: {} }}", layer)
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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 enum TextureLayer {
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Whole,
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Atlas(AtlasAllocator),
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Empty,
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}
|
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|
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impl std::fmt::Debug for TextureLayer {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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match self {
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TextureLayer::Whole => write!(f, "TextureLayer::Whole"),
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TextureLayer::Atlas(_) => write!(f, "TextureLayer::Atlas"),
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TextureLayer::Empty => write!(f, "TextureLayer::Empty"),
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}
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}
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}
|
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|
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#[derive(Debug)]
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|
pub struct TextureArray {
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texture: wgpu::Texture,
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texture_array_size: u32,
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layers: Vec<TextureLayer>,
|
|
}
|
|
|
|
impl TextureArray {
|
|
fn new(device: &wgpu::Device) -> Self {
|
|
let (width, height) = (ATLAS_SIZE, ATLAS_SIZE);
|
|
|
|
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::COPY_SRC
|
|
| wgpu::TextureUsage::SAMPLED,
|
|
});
|
|
|
|
TextureArray {
|
|
texture,
|
|
texture_array_size: 1,
|
|
layers: vec!(TextureLayer::Empty),
|
|
}
|
|
}
|
|
|
|
fn allocate(&mut self, size: Size) -> Option<ImageAllocation> {
|
|
// Allocate one layer if allocation fits perfectly
|
|
if size.width == ATLAS_SIZE as i32 && size.height == ATLAS_SIZE as i32 {
|
|
for (i, layer) in self.layers.iter_mut().enumerate() {
|
|
if let TextureLayer::Empty = layer
|
|
{
|
|
*layer = TextureLayer::Whole;
|
|
return Some(ImageAllocation::SingleAllocation(
|
|
ArrayAllocation::WholeLayer { layer: i }
|
|
));
|
|
}
|
|
}
|
|
|
|
self.layers.push(TextureLayer::Whole);
|
|
return Some(ImageAllocation::SingleAllocation(
|
|
ArrayAllocation::WholeLayer { layer: self.layers.len() - 1 }
|
|
));
|
|
}
|
|
|
|
// Split big allocations across multiple layers
|
|
if size.width > ATLAS_SIZE as i32 || size.height > ATLAS_SIZE as i32 {
|
|
let mut mappings = Vec::new();
|
|
|
|
let mut y = 0;
|
|
while y < size.height {
|
|
let height = std::cmp::min(size.height - y, ATLAS_SIZE as i32);
|
|
let mut x = 0;
|
|
|
|
while x < size.width {
|
|
let width = std::cmp::min(size.width - x, ATLAS_SIZE as i32);
|
|
let allocation = self
|
|
.allocate(Size::new(width, height))
|
|
.expect("Allocating texture space");
|
|
|
|
if let ImageAllocation::SingleAllocation(allocation) = allocation {
|
|
let src_pos = (x as u32, y as u32);
|
|
mappings.push(ArrayAllocationMapping { src_pos, allocation });
|
|
}
|
|
|
|
x += width;
|
|
}
|
|
y += height;
|
|
}
|
|
|
|
return Some(ImageAllocation::MultipleAllocations {
|
|
mappings,
|
|
size: (size.width as u32, size.height as u32),
|
|
});
|
|
}
|
|
|
|
// Try allocating on an existing layer
|
|
for (i, layer) in self.layers.iter_mut().enumerate() {
|
|
if let TextureLayer::Atlas(allocator) = layer {
|
|
if let Some(allocation) = allocator.allocate(size.clone()) {
|
|
let array_allocation = ArrayAllocation::AtlasAllocation { layer: i, allocation };
|
|
return Some(ImageAllocation::SingleAllocation(array_allocation));
|
|
}
|
|
}
|
|
}
|
|
|
|
// Create new layer with atlas allocator
|
|
let mut allocator = AtlasAllocator::new(Size::new(ATLAS_SIZE as i32, ATLAS_SIZE as i32));
|
|
if let Some(allocation) = allocator.allocate(size) {
|
|
self.layers.push(TextureLayer::Atlas(allocator));
|
|
|
|
return Some(ImageAllocation::SingleAllocation(
|
|
ArrayAllocation::AtlasAllocation {
|
|
layer: self.layers.len() - 1,
|
|
allocation,
|
|
}
|
|
));
|
|
}
|
|
|
|
// One of the above should have worked
|
|
None
|
|
}
|
|
|
|
fn deallocate(&mut self, allocation: &ImageAllocation) {
|
|
match allocation {
|
|
ImageAllocation::SingleAllocation(allocation) => {
|
|
self.deallocate_single_allocation(allocation);
|
|
}
|
|
ImageAllocation::MultipleAllocations { mappings, .. } => {
|
|
for mapping in mappings {
|
|
self.deallocate_single_allocation(&mapping.allocation);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn deallocate_single_allocation(&mut self, allocation: &ArrayAllocation) {
|
|
if let Some(layer) = self.layers.get_mut(allocation.layer()) {
|
|
match allocation {
|
|
ArrayAllocation::WholeLayer { .. } => {
|
|
*layer = TextureLayer::Empty;
|
|
}
|
|
ArrayAllocation::AtlasAllocation { allocation, .. } => {
|
|
if let TextureLayer::Atlas(allocator) = layer {
|
|
allocator.deallocate(allocation.id);
|
|
|
|
let mut empty_allocator = true;
|
|
allocator.for_each_allocated_rectangle(|_, _| empty_allocator = false);
|
|
|
|
if empty_allocator {
|
|
*layer = TextureLayer::Empty;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn upload<C, I>(
|
|
&mut self,
|
|
image: &I,
|
|
device: &wgpu::Device,
|
|
encoder: &mut wgpu::CommandEncoder,
|
|
) -> ImageAllocation
|
|
where
|
|
I: RawImageData<Chunk = C>,
|
|
C: Copy + 'static,
|
|
{
|
|
let size = Size::new(image.width() as i32, image.height() as i32);
|
|
let allocation = self.allocate(size).expect("Allocating texture space");
|
|
|
|
match &allocation {
|
|
ImageAllocation::SingleAllocation(allocation) => {
|
|
let data = image.data();
|
|
let buffer = device
|
|
.create_buffer_mapped(
|
|
data.len(),
|
|
wgpu::BufferUsage::COPY_SRC,
|
|
)
|
|
.fill_from_slice(data);
|
|
|
|
if allocation.layer() >= self.texture_array_size as usize {
|
|
self.grow(1, device, encoder);
|
|
}
|
|
|
|
self.upload_texture(
|
|
&buffer,
|
|
&allocation,
|
|
encoder,
|
|
);
|
|
}
|
|
ImageAllocation::MultipleAllocations { mappings, .. } => {
|
|
let chunks_per_pixel = 4 / std::mem::size_of::<C>();
|
|
let chunks_per_line = chunks_per_pixel * image.width() as usize;
|
|
|
|
let highest_layer = mappings
|
|
.iter()
|
|
.map(|m| m.allocation.layer() as u32)
|
|
.max()
|
|
.unwrap_or(0);
|
|
|
|
if highest_layer >= self.texture_array_size {
|
|
let grow_by = 1 + highest_layer - self.texture_array_size;
|
|
self.grow(grow_by, device, encoder);
|
|
}
|
|
|
|
for mapping in mappings {
|
|
let sub_width = mapping.allocation.size().0 as usize;
|
|
let sub_height = mapping.allocation.size().1 as usize;
|
|
let sub_line_start = mapping.src_pos.0 as usize * chunks_per_pixel;
|
|
let sub_line_end = (mapping.src_pos.0 as usize + sub_width) * chunks_per_pixel;
|
|
|
|
let mut sub_lines = image
|
|
.data()
|
|
.chunks(chunks_per_line)
|
|
.skip(mapping.src_pos.1 as usize)
|
|
.take(sub_height)
|
|
.map(|line| &line[sub_line_start..sub_line_end]);
|
|
|
|
let buffer = device
|
|
.create_buffer_mapped(
|
|
chunks_per_pixel * sub_width * sub_height,
|
|
wgpu::BufferUsage::COPY_SRC,
|
|
);
|
|
|
|
let mut buffer_lines = buffer.data.chunks_mut(sub_width * chunks_per_pixel);
|
|
|
|
while let (Some(buffer_line), Some(sub_line)) = (buffer_lines.next(), sub_lines.next()) {
|
|
buffer_line.copy_from_slice(sub_line);
|
|
}
|
|
|
|
self.upload_texture(
|
|
&buffer.finish(),
|
|
&mapping.allocation,
|
|
encoder,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
allocation
|
|
}
|
|
|
|
fn upload_texture(
|
|
&mut self,
|
|
buffer: &wgpu::Buffer,
|
|
allocation: &ArrayAllocation,
|
|
encoder: &mut wgpu::CommandEncoder,
|
|
) {
|
|
let array_layer = allocation.layer() as u32;
|
|
|
|
let (width, height) = allocation.size();
|
|
|
|
let extent = wgpu::Extent3d {
|
|
width,
|
|
height,
|
|
depth: 1,
|
|
};
|
|
|
|
let (x, y) = allocation.position();
|
|
|
|
encoder.copy_buffer_to_texture(
|
|
wgpu::BufferCopyView {
|
|
buffer,
|
|
offset: 0,
|
|
row_pitch: 4 * width,
|
|
image_height: height,
|
|
},
|
|
wgpu::TextureCopyView {
|
|
texture: &self.texture,
|
|
array_layer,
|
|
mip_level: 0,
|
|
origin: wgpu::Origin3d {
|
|
x: x as f32,
|
|
y: y as f32,
|
|
z: 0.0,
|
|
},
|
|
},
|
|
extent,
|
|
);
|
|
}
|
|
|
|
fn grow(
|
|
&mut self,
|
|
grow_by: u32,
|
|
device: &wgpu::Device,
|
|
encoder: &mut wgpu::CommandEncoder,
|
|
) {
|
|
if grow_by == 0 {
|
|
return;
|
|
}
|
|
|
|
let old_texture_array_size = self.texture_array_size;
|
|
|
|
let new_texture = device.create_texture(&wgpu::TextureDescriptor {
|
|
size: wgpu::Extent3d {
|
|
width: ATLAS_SIZE,
|
|
height: ATLAS_SIZE,
|
|
depth: 1,
|
|
},
|
|
array_layer_count: old_texture_array_size + grow_by,
|
|
mip_level_count: 1,
|
|
sample_count: 1,
|
|
dimension: wgpu::TextureDimension::D2,
|
|
format: wgpu::TextureFormat::Bgra8UnormSrgb,
|
|
usage: wgpu::TextureUsage::COPY_DST
|
|
| wgpu::TextureUsage::COPY_SRC
|
|
| wgpu::TextureUsage::SAMPLED,
|
|
});
|
|
|
|
for (i, layer) in self.layers.iter().enumerate() {
|
|
if i >= old_texture_array_size as usize {
|
|
break;
|
|
}
|
|
|
|
if let TextureLayer::Empty = layer {
|
|
continue;
|
|
}
|
|
|
|
encoder.copy_texture_to_texture(
|
|
wgpu::TextureCopyView {
|
|
texture: &self.texture,
|
|
array_layer: i as u32,
|
|
mip_level: 0,
|
|
origin: wgpu::Origin3d {
|
|
x: 0.0,
|
|
y: 0.0,
|
|
z: 0.0,
|
|
},
|
|
},
|
|
wgpu::TextureCopyView {
|
|
texture: &new_texture,
|
|
array_layer: i as u32,
|
|
mip_level: 0,
|
|
origin: wgpu::Origin3d {
|
|
x: 0.0,
|
|
y: 0.0,
|
|
z: 0.0,
|
|
},
|
|
},
|
|
wgpu::Extent3d {
|
|
width: ATLAS_SIZE,
|
|
height: ATLAS_SIZE,
|
|
depth: 1,
|
|
}
|
|
);
|
|
}
|
|
|
|
self.texture_array_size += grow_by;
|
|
self.texture = new_texture;
|
|
}
|
|
}
|
|
|
|
trait RawImageData {
|
|
type Chunk;
|
|
|
|
fn data(&self) -> &[Self::Chunk];
|
|
fn width(&self) -> u32;
|
|
fn height(&self) -> u32;
|
|
}
|
|
|
|
#[cfg(feature = "image")]
|
|
impl RawImageData for ::image::ImageBuffer<::image::Bgra<u8>, Vec<u8>> {
|
|
type Chunk = u8;
|
|
|
|
fn data(&self) -> &[Self::Chunk] {
|
|
&self
|
|
}
|
|
|
|
fn width(&self) -> u32 {
|
|
self.dimensions().0
|
|
}
|
|
|
|
fn height(&self) -> u32 {
|
|
self.dimensions().1
|
|
}
|
|
}
|
|
|
|
#[cfg(feature = "svg")]
|
|
impl RawImageData for resvg::raqote::DrawTarget {
|
|
type Chunk = u32;
|
|
|
|
fn data(&self) -> &[Self::Chunk] {
|
|
self.get_data()
|
|
}
|
|
|
|
fn width(&self) -> u32 {
|
|
self.width() as u32
|
|
}
|
|
|
|
fn height(&self) -> u32 {
|
|
self.height() as u32
|
|
}
|
|
}
|
|
|
|
#[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],
|
|
},
|
|
];
|
|
|
|
const ATLAS_SIZE: u32 = 256;
|
|
|
|
#[repr(C)]
|
|
#[derive(Debug, Clone, Copy)]
|
|
struct Instance {
|
|
_position: [f32; 2],
|
|
_scale: [f32; 2],
|
|
_position_in_atlas: [f32; 2],
|
|
_scale_in_atlas: [f32; 2],
|
|
_layer: f32,
|
|
}
|
|
|
|
#[repr(C)]
|
|
#[derive(Debug, Clone, Copy)]
|
|
struct Uniforms {
|
|
transform: [f32; 16],
|
|
}
|