977 lines
30 KiB
Rust
977 lines
30 KiB
Rust
//! Draw meshes of triangles.
|
|
mod msaa;
|
|
|
|
use crate::core::{Rectangle, Size, Transformation};
|
|
use crate::graphics::mesh::{self, Mesh};
|
|
use crate::graphics::Antialiasing;
|
|
use crate::Buffer;
|
|
|
|
use rustc_hash::FxHashMap;
|
|
use std::collections::hash_map;
|
|
use std::sync::atomic::{self, AtomicU64};
|
|
use std::sync::{self, Arc};
|
|
|
|
const INITIAL_INDEX_COUNT: usize = 1_000;
|
|
const INITIAL_VERTEX_COUNT: usize = 1_000;
|
|
|
|
pub type Batch = Vec<Item>;
|
|
|
|
#[derive(Debug)]
|
|
pub enum Item {
|
|
Group {
|
|
transformation: Transformation,
|
|
meshes: Vec<Mesh>,
|
|
},
|
|
Cached {
|
|
transformation: Transformation,
|
|
cache: Cache,
|
|
},
|
|
}
|
|
|
|
#[derive(Debug, Clone)]
|
|
pub struct Cache {
|
|
id: Id,
|
|
batch: Arc<[Mesh]>,
|
|
version: usize,
|
|
}
|
|
|
|
#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
|
|
pub struct Id(u64);
|
|
|
|
impl Cache {
|
|
pub fn new(meshes: Vec<Mesh>) -> Option<Self> {
|
|
static NEXT_ID: AtomicU64 = AtomicU64::new(0);
|
|
|
|
if meshes.is_empty() {
|
|
return None;
|
|
}
|
|
|
|
Some(Self {
|
|
id: Id(NEXT_ID.fetch_add(1, atomic::Ordering::Relaxed)),
|
|
batch: Arc::from(meshes),
|
|
version: 0,
|
|
})
|
|
}
|
|
|
|
pub fn update(&mut self, meshes: Vec<Mesh>) {
|
|
self.batch = Arc::from(meshes);
|
|
self.version += 1;
|
|
}
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
struct Upload {
|
|
layer: Layer,
|
|
transformation: Transformation,
|
|
version: usize,
|
|
batch: sync::Weak<[Mesh]>,
|
|
}
|
|
|
|
#[derive(Debug, Default)]
|
|
pub struct Storage {
|
|
uploads: FxHashMap<Id, Upload>,
|
|
}
|
|
|
|
impl Storage {
|
|
pub fn new() -> Self {
|
|
Self::default()
|
|
}
|
|
|
|
fn get(&self, cache: &Cache) -> Option<&Upload> {
|
|
if cache.batch.is_empty() {
|
|
return None;
|
|
}
|
|
|
|
self.uploads.get(&cache.id)
|
|
}
|
|
|
|
fn prepare(
|
|
&mut self,
|
|
device: &wgpu::Device,
|
|
encoder: &mut wgpu::CommandEncoder,
|
|
belt: &mut wgpu::util::StagingBelt,
|
|
solid: &solid::Pipeline,
|
|
gradient: &gradient::Pipeline,
|
|
cache: &Cache,
|
|
new_transformation: Transformation,
|
|
) {
|
|
match self.uploads.entry(cache.id) {
|
|
hash_map::Entry::Occupied(entry) => {
|
|
let upload = entry.into_mut();
|
|
|
|
if !cache.batch.is_empty()
|
|
&& (upload.version != cache.version
|
|
|| upload.transformation != new_transformation)
|
|
{
|
|
upload.layer.prepare(
|
|
device,
|
|
encoder,
|
|
belt,
|
|
solid,
|
|
gradient,
|
|
&cache.batch,
|
|
new_transformation,
|
|
);
|
|
|
|
upload.batch = Arc::downgrade(&cache.batch);
|
|
upload.version = cache.version;
|
|
upload.transformation = new_transformation;
|
|
}
|
|
}
|
|
hash_map::Entry::Vacant(entry) => {
|
|
let mut layer = Layer::new(device, solid, gradient);
|
|
|
|
layer.prepare(
|
|
device,
|
|
encoder,
|
|
belt,
|
|
solid,
|
|
gradient,
|
|
&cache.batch,
|
|
new_transformation,
|
|
);
|
|
|
|
let _ = entry.insert(Upload {
|
|
layer,
|
|
transformation: new_transformation,
|
|
version: 0,
|
|
batch: Arc::downgrade(&cache.batch),
|
|
});
|
|
|
|
log::debug!(
|
|
"New mesh upload: {} (total: {})",
|
|
cache.id.0,
|
|
self.uploads.len()
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn trim(&mut self) {
|
|
self.uploads
|
|
.retain(|_id, upload| upload.batch.strong_count() > 0);
|
|
}
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
pub struct Pipeline {
|
|
blit: Option<msaa::Blit>,
|
|
solid: solid::Pipeline,
|
|
gradient: gradient::Pipeline,
|
|
layers: Vec<Layer>,
|
|
prepare_layer: usize,
|
|
}
|
|
|
|
impl Pipeline {
|
|
pub fn new(
|
|
device: &wgpu::Device,
|
|
format: wgpu::TextureFormat,
|
|
antialiasing: Option<Antialiasing>,
|
|
) -> Pipeline {
|
|
Pipeline {
|
|
blit: antialiasing.map(|a| msaa::Blit::new(device, format, a)),
|
|
solid: solid::Pipeline::new(device, format, antialiasing),
|
|
gradient: gradient::Pipeline::new(device, format, antialiasing),
|
|
layers: Vec::new(),
|
|
prepare_layer: 0,
|
|
}
|
|
}
|
|
|
|
pub fn prepare(
|
|
&mut self,
|
|
device: &wgpu::Device,
|
|
encoder: &mut wgpu::CommandEncoder,
|
|
belt: &mut wgpu::util::StagingBelt,
|
|
storage: &mut Storage,
|
|
items: &[Item],
|
|
scale: Transformation,
|
|
target_size: Size<u32>,
|
|
) {
|
|
let projection = if let Some(blit) = &mut self.blit {
|
|
blit.prepare(device, encoder, belt, target_size) * scale
|
|
} else {
|
|
Transformation::orthographic(target_size.width, target_size.height)
|
|
* scale
|
|
};
|
|
|
|
for item in items {
|
|
match item {
|
|
Item::Group {
|
|
transformation,
|
|
meshes,
|
|
} => {
|
|
if self.layers.len() <= self.prepare_layer {
|
|
self.layers.push(Layer::new(
|
|
device,
|
|
&self.solid,
|
|
&self.gradient,
|
|
));
|
|
}
|
|
|
|
let layer = &mut self.layers[self.prepare_layer];
|
|
layer.prepare(
|
|
device,
|
|
encoder,
|
|
belt,
|
|
&self.solid,
|
|
&self.gradient,
|
|
meshes,
|
|
projection * *transformation,
|
|
);
|
|
|
|
self.prepare_layer += 1;
|
|
}
|
|
Item::Cached {
|
|
transformation,
|
|
cache,
|
|
} => {
|
|
storage.prepare(
|
|
device,
|
|
encoder,
|
|
belt,
|
|
&self.solid,
|
|
&self.gradient,
|
|
cache,
|
|
projection * *transformation,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn render(
|
|
&mut self,
|
|
encoder: &mut wgpu::CommandEncoder,
|
|
target: &wgpu::TextureView,
|
|
storage: &Storage,
|
|
start: usize,
|
|
batch: &Batch,
|
|
bounds: Rectangle,
|
|
screen_transformation: Transformation,
|
|
) -> usize {
|
|
let mut layer_count = 0;
|
|
|
|
let items = batch.iter().filter_map(|item| match item {
|
|
Item::Group {
|
|
transformation,
|
|
meshes,
|
|
} => {
|
|
let layer = &self.layers[start + layer_count];
|
|
layer_count += 1;
|
|
|
|
Some((
|
|
layer,
|
|
meshes.as_slice(),
|
|
screen_transformation * *transformation,
|
|
))
|
|
}
|
|
Item::Cached {
|
|
transformation,
|
|
cache,
|
|
} => {
|
|
let upload = storage.get(cache)?;
|
|
|
|
Some((
|
|
&upload.layer,
|
|
&cache.batch,
|
|
screen_transformation * *transformation,
|
|
))
|
|
}
|
|
});
|
|
|
|
render(
|
|
encoder,
|
|
target,
|
|
self.blit.as_mut(),
|
|
&self.solid,
|
|
&self.gradient,
|
|
bounds,
|
|
items,
|
|
);
|
|
|
|
layer_count
|
|
}
|
|
|
|
pub fn end_frame(&mut self) {
|
|
self.prepare_layer = 0;
|
|
}
|
|
}
|
|
|
|
fn render<'a>(
|
|
encoder: &mut wgpu::CommandEncoder,
|
|
target: &wgpu::TextureView,
|
|
mut blit: Option<&mut msaa::Blit>,
|
|
solid: &solid::Pipeline,
|
|
gradient: &gradient::Pipeline,
|
|
bounds: Rectangle,
|
|
group: impl Iterator<Item = (&'a Layer, &'a [Mesh], Transformation)>,
|
|
) {
|
|
{
|
|
let (attachment, resolve_target, load) = if let Some(blit) = &mut blit {
|
|
let (attachment, resolve_target) = blit.targets();
|
|
|
|
(
|
|
attachment,
|
|
Some(resolve_target),
|
|
wgpu::LoadOp::Clear(wgpu::Color::TRANSPARENT),
|
|
)
|
|
} else {
|
|
(target, None, wgpu::LoadOp::Load)
|
|
};
|
|
|
|
let mut render_pass =
|
|
encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
|
|
label: Some("iced_wgpu.triangle.render_pass"),
|
|
color_attachments: &[Some(wgpu::RenderPassColorAttachment {
|
|
view: attachment,
|
|
resolve_target,
|
|
ops: wgpu::Operations {
|
|
load,
|
|
store: wgpu::StoreOp::Store,
|
|
},
|
|
})],
|
|
depth_stencil_attachment: None,
|
|
timestamp_writes: None,
|
|
occlusion_query_set: None,
|
|
});
|
|
|
|
for (layer, meshes, transformation) in group {
|
|
layer.render(
|
|
solid,
|
|
gradient,
|
|
meshes,
|
|
bounds,
|
|
transformation,
|
|
&mut render_pass,
|
|
);
|
|
}
|
|
}
|
|
|
|
if let Some(blit) = blit {
|
|
blit.draw(encoder, target);
|
|
}
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
pub struct Layer {
|
|
index_buffer: Buffer<u32>,
|
|
index_strides: Vec<u32>,
|
|
solid: solid::Layer,
|
|
gradient: gradient::Layer,
|
|
}
|
|
|
|
impl Layer {
|
|
fn new(
|
|
device: &wgpu::Device,
|
|
solid: &solid::Pipeline,
|
|
gradient: &gradient::Pipeline,
|
|
) -> Self {
|
|
Self {
|
|
index_buffer: Buffer::new(
|
|
device,
|
|
"iced_wgpu.triangle.index_buffer",
|
|
INITIAL_INDEX_COUNT,
|
|
wgpu::BufferUsages::INDEX | wgpu::BufferUsages::COPY_DST,
|
|
),
|
|
index_strides: Vec::new(),
|
|
solid: solid::Layer::new(device, &solid.constants_layout),
|
|
gradient: gradient::Layer::new(device, &gradient.constants_layout),
|
|
}
|
|
}
|
|
|
|
fn prepare(
|
|
&mut self,
|
|
device: &wgpu::Device,
|
|
encoder: &mut wgpu::CommandEncoder,
|
|
belt: &mut wgpu::util::StagingBelt,
|
|
solid: &solid::Pipeline,
|
|
gradient: &gradient::Pipeline,
|
|
meshes: &[Mesh],
|
|
transformation: Transformation,
|
|
) {
|
|
// Count the total amount of vertices & indices we need to handle
|
|
let count = mesh::attribute_count_of(meshes);
|
|
|
|
// Then we ensure the current attribute buffers are big enough, resizing if necessary.
|
|
// We are not currently using the return value of these functions as we have no system in
|
|
// place to calculate mesh diff, or to know whether or not that would be more performant for
|
|
// the majority of use cases. Therefore we will write GPU data every frame (for now).
|
|
let _ = self.index_buffer.resize(device, count.indices);
|
|
let _ = self.solid.vertices.resize(device, count.solid_vertices);
|
|
let _ = self
|
|
.gradient
|
|
.vertices
|
|
.resize(device, count.gradient_vertices);
|
|
|
|
if self.solid.uniforms.resize(device, count.solids) {
|
|
self.solid.constants = solid::Layer::bind_group(
|
|
device,
|
|
&self.solid.uniforms.raw,
|
|
&solid.constants_layout,
|
|
);
|
|
}
|
|
|
|
if self.gradient.uniforms.resize(device, count.gradients) {
|
|
self.gradient.constants = gradient::Layer::bind_group(
|
|
device,
|
|
&self.gradient.uniforms.raw,
|
|
&gradient.constants_layout,
|
|
);
|
|
}
|
|
|
|
self.index_strides.clear();
|
|
self.index_buffer.clear();
|
|
self.solid.vertices.clear();
|
|
self.solid.uniforms.clear();
|
|
self.gradient.vertices.clear();
|
|
self.gradient.uniforms.clear();
|
|
|
|
let mut solid_vertex_offset = 0;
|
|
let mut solid_uniform_offset = 0;
|
|
let mut gradient_vertex_offset = 0;
|
|
let mut gradient_uniform_offset = 0;
|
|
let mut index_offset = 0;
|
|
|
|
for mesh in meshes {
|
|
let indices = mesh.indices();
|
|
|
|
let uniforms =
|
|
Uniforms::new(transformation * mesh.transformation());
|
|
|
|
index_offset += self.index_buffer.write(
|
|
device,
|
|
encoder,
|
|
belt,
|
|
index_offset,
|
|
indices,
|
|
);
|
|
|
|
self.index_strides.push(indices.len() as u32);
|
|
|
|
match mesh {
|
|
Mesh::Solid { buffers, .. } => {
|
|
solid_vertex_offset += self.solid.vertices.write(
|
|
device,
|
|
encoder,
|
|
belt,
|
|
solid_vertex_offset,
|
|
&buffers.vertices,
|
|
);
|
|
|
|
solid_uniform_offset += self.solid.uniforms.write(
|
|
device,
|
|
encoder,
|
|
belt,
|
|
solid_uniform_offset,
|
|
&[uniforms],
|
|
);
|
|
}
|
|
Mesh::Gradient { buffers, .. } => {
|
|
gradient_vertex_offset += self.gradient.vertices.write(
|
|
device,
|
|
encoder,
|
|
belt,
|
|
gradient_vertex_offset,
|
|
&buffers.vertices,
|
|
);
|
|
|
|
gradient_uniform_offset += self.gradient.uniforms.write(
|
|
device,
|
|
encoder,
|
|
belt,
|
|
gradient_uniform_offset,
|
|
&[uniforms],
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn render<'a>(
|
|
&'a self,
|
|
solid: &'a solid::Pipeline,
|
|
gradient: &'a gradient::Pipeline,
|
|
meshes: &[Mesh],
|
|
bounds: Rectangle,
|
|
transformation: Transformation,
|
|
render_pass: &mut wgpu::RenderPass<'a>,
|
|
) {
|
|
let mut num_solids = 0;
|
|
let mut num_gradients = 0;
|
|
let mut last_is_solid = None;
|
|
|
|
for (index, mesh) in meshes.iter().enumerate() {
|
|
let Some(clip_bounds) = bounds
|
|
.intersection(&(mesh.clip_bounds() * transformation))
|
|
.and_then(Rectangle::snap)
|
|
else {
|
|
match mesh {
|
|
Mesh::Solid { .. } => {
|
|
num_solids += 1;
|
|
}
|
|
Mesh::Gradient { .. } => {
|
|
num_gradients += 1;
|
|
}
|
|
}
|
|
continue;
|
|
};
|
|
|
|
render_pass.set_scissor_rect(
|
|
clip_bounds.x,
|
|
clip_bounds.y,
|
|
clip_bounds.width,
|
|
clip_bounds.height,
|
|
);
|
|
|
|
match mesh {
|
|
Mesh::Solid { .. } => {
|
|
if !last_is_solid.unwrap_or(false) {
|
|
render_pass.set_pipeline(&solid.pipeline);
|
|
|
|
last_is_solid = Some(true);
|
|
}
|
|
|
|
render_pass.set_bind_group(
|
|
0,
|
|
&self.solid.constants,
|
|
&[(num_solids * std::mem::size_of::<Uniforms>())
|
|
as u32],
|
|
);
|
|
|
|
render_pass.set_vertex_buffer(
|
|
0,
|
|
self.solid.vertices.slice_from_index(num_solids),
|
|
);
|
|
|
|
num_solids += 1;
|
|
}
|
|
Mesh::Gradient { .. } => {
|
|
if last_is_solid.unwrap_or(true) {
|
|
render_pass.set_pipeline(&gradient.pipeline);
|
|
|
|
last_is_solid = Some(false);
|
|
}
|
|
|
|
render_pass.set_bind_group(
|
|
0,
|
|
&self.gradient.constants,
|
|
&[(num_gradients * std::mem::size_of::<Uniforms>())
|
|
as u32],
|
|
);
|
|
|
|
render_pass.set_vertex_buffer(
|
|
0,
|
|
self.gradient.vertices.slice_from_index(num_gradients),
|
|
);
|
|
|
|
num_gradients += 1;
|
|
}
|
|
};
|
|
|
|
render_pass.set_index_buffer(
|
|
self.index_buffer.slice_from_index(index),
|
|
wgpu::IndexFormat::Uint32,
|
|
);
|
|
|
|
render_pass.draw_indexed(0..self.index_strides[index], 0, 0..1);
|
|
}
|
|
}
|
|
}
|
|
|
|
fn fragment_target(
|
|
texture_format: wgpu::TextureFormat,
|
|
) -> wgpu::ColorTargetState {
|
|
wgpu::ColorTargetState {
|
|
format: texture_format,
|
|
blend: Some(wgpu::BlendState::ALPHA_BLENDING),
|
|
write_mask: wgpu::ColorWrites::ALL,
|
|
}
|
|
}
|
|
|
|
fn primitive_state() -> wgpu::PrimitiveState {
|
|
wgpu::PrimitiveState {
|
|
topology: wgpu::PrimitiveTopology::TriangleList,
|
|
front_face: wgpu::FrontFace::Cw,
|
|
..Default::default()
|
|
}
|
|
}
|
|
|
|
fn multisample_state(
|
|
antialiasing: Option<Antialiasing>,
|
|
) -> wgpu::MultisampleState {
|
|
wgpu::MultisampleState {
|
|
count: antialiasing.map(Antialiasing::sample_count).unwrap_or(1),
|
|
mask: !0,
|
|
alpha_to_coverage_enabled: false,
|
|
}
|
|
}
|
|
|
|
#[derive(Debug, Clone, Copy, bytemuck::Pod, bytemuck::Zeroable)]
|
|
#[repr(C)]
|
|
pub struct Uniforms {
|
|
transform: [f32; 16],
|
|
/// Uniform values must be 256-aligned;
|
|
/// see: [`wgpu::Limits`] `min_uniform_buffer_offset_alignment`.
|
|
_padding: [f32; 48],
|
|
}
|
|
|
|
impl Uniforms {
|
|
pub fn new(transform: Transformation) -> Self {
|
|
Self {
|
|
transform: transform.into(),
|
|
_padding: [0.0; 48],
|
|
}
|
|
}
|
|
|
|
pub fn entry() -> wgpu::BindGroupLayoutEntry {
|
|
wgpu::BindGroupLayoutEntry {
|
|
binding: 0,
|
|
visibility: wgpu::ShaderStages::VERTEX_FRAGMENT,
|
|
ty: wgpu::BindingType::Buffer {
|
|
ty: wgpu::BufferBindingType::Uniform,
|
|
has_dynamic_offset: true,
|
|
min_binding_size: wgpu::BufferSize::new(
|
|
std::mem::size_of::<Self>() as u64,
|
|
),
|
|
},
|
|
count: None,
|
|
}
|
|
}
|
|
|
|
pub fn min_size() -> Option<wgpu::BufferSize> {
|
|
wgpu::BufferSize::new(std::mem::size_of::<Self>() as u64)
|
|
}
|
|
}
|
|
|
|
mod solid {
|
|
use crate::graphics::mesh;
|
|
use crate::graphics::Antialiasing;
|
|
use crate::triangle;
|
|
use crate::Buffer;
|
|
|
|
#[derive(Debug)]
|
|
pub struct Pipeline {
|
|
pub pipeline: wgpu::RenderPipeline,
|
|
pub constants_layout: wgpu::BindGroupLayout,
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
pub struct Layer {
|
|
pub vertices: Buffer<mesh::SolidVertex2D>,
|
|
pub uniforms: Buffer<triangle::Uniforms>,
|
|
pub constants: wgpu::BindGroup,
|
|
}
|
|
|
|
impl Layer {
|
|
pub fn new(
|
|
device: &wgpu::Device,
|
|
constants_layout: &wgpu::BindGroupLayout,
|
|
) -> Self {
|
|
let vertices = Buffer::new(
|
|
device,
|
|
"iced_wgpu.triangle.solid.vertex_buffer",
|
|
triangle::INITIAL_VERTEX_COUNT,
|
|
wgpu::BufferUsages::VERTEX | wgpu::BufferUsages::COPY_DST,
|
|
);
|
|
|
|
let uniforms = Buffer::new(
|
|
device,
|
|
"iced_wgpu.triangle.solid.uniforms",
|
|
1,
|
|
wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST,
|
|
);
|
|
|
|
let constants =
|
|
Self::bind_group(device, &uniforms.raw, constants_layout);
|
|
|
|
Self {
|
|
vertices,
|
|
uniforms,
|
|
constants,
|
|
}
|
|
}
|
|
|
|
pub fn bind_group(
|
|
device: &wgpu::Device,
|
|
buffer: &wgpu::Buffer,
|
|
layout: &wgpu::BindGroupLayout,
|
|
) -> wgpu::BindGroup {
|
|
device.create_bind_group(&wgpu::BindGroupDescriptor {
|
|
label: Some("iced_wgpu.triangle.solid.bind_group"),
|
|
layout,
|
|
entries: &[wgpu::BindGroupEntry {
|
|
binding: 0,
|
|
resource: wgpu::BindingResource::Buffer(
|
|
wgpu::BufferBinding {
|
|
buffer,
|
|
offset: 0,
|
|
size: triangle::Uniforms::min_size(),
|
|
},
|
|
),
|
|
}],
|
|
})
|
|
}
|
|
}
|
|
|
|
impl Pipeline {
|
|
pub fn new(
|
|
device: &wgpu::Device,
|
|
format: wgpu::TextureFormat,
|
|
antialiasing: Option<Antialiasing>,
|
|
) -> Self {
|
|
let constants_layout = device.create_bind_group_layout(
|
|
&wgpu::BindGroupLayoutDescriptor {
|
|
label: Some("iced_wgpu.triangle.solid.bind_group_layout"),
|
|
entries: &[triangle::Uniforms::entry()],
|
|
},
|
|
);
|
|
|
|
let layout = device.create_pipeline_layout(
|
|
&wgpu::PipelineLayoutDescriptor {
|
|
label: Some("iced_wgpu.triangle.solid.pipeline_layout"),
|
|
bind_group_layouts: &[&constants_layout],
|
|
push_constant_ranges: &[],
|
|
},
|
|
);
|
|
|
|
let shader =
|
|
device.create_shader_module(wgpu::ShaderModuleDescriptor {
|
|
label: Some("iced_wgpu.triangle.solid.shader"),
|
|
source: wgpu::ShaderSource::Wgsl(
|
|
std::borrow::Cow::Borrowed(concat!(
|
|
include_str!("shader/triangle.wgsl"),
|
|
"\n",
|
|
include_str!("shader/triangle/solid.wgsl"),
|
|
)),
|
|
),
|
|
});
|
|
|
|
let pipeline =
|
|
device.create_render_pipeline(
|
|
&wgpu::RenderPipelineDescriptor {
|
|
label: Some("iced_wgpu::triangle::solid pipeline"),
|
|
layout: Some(&layout),
|
|
vertex: wgpu::VertexState {
|
|
module: &shader,
|
|
entry_point: Some("solid_vs_main"),
|
|
buffers: &[wgpu::VertexBufferLayout {
|
|
array_stride: std::mem::size_of::<
|
|
mesh::SolidVertex2D,
|
|
>(
|
|
)
|
|
as u64,
|
|
step_mode: wgpu::VertexStepMode::Vertex,
|
|
attributes: &wgpu::vertex_attr_array!(
|
|
// Position
|
|
0 => Float32x2,
|
|
// Color
|
|
1 => Float32x4,
|
|
),
|
|
}],
|
|
compilation_options:
|
|
wgpu::PipelineCompilationOptions::default(),
|
|
},
|
|
fragment: Some(wgpu::FragmentState {
|
|
module: &shader,
|
|
entry_point: Some("solid_fs_main"),
|
|
targets: &[Some(triangle::fragment_target(format))],
|
|
compilation_options:
|
|
wgpu::PipelineCompilationOptions::default(),
|
|
}),
|
|
primitive: triangle::primitive_state(),
|
|
depth_stencil: None,
|
|
multisample: triangle::multisample_state(antialiasing),
|
|
multiview: None,
|
|
cache: None,
|
|
},
|
|
);
|
|
|
|
Self {
|
|
pipeline,
|
|
constants_layout,
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
mod gradient {
|
|
use crate::graphics::color;
|
|
use crate::graphics::mesh;
|
|
use crate::graphics::Antialiasing;
|
|
use crate::triangle;
|
|
use crate::Buffer;
|
|
|
|
#[derive(Debug)]
|
|
pub struct Pipeline {
|
|
pub pipeline: wgpu::RenderPipeline,
|
|
pub constants_layout: wgpu::BindGroupLayout,
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
pub struct Layer {
|
|
pub vertices: Buffer<mesh::GradientVertex2D>,
|
|
pub uniforms: Buffer<triangle::Uniforms>,
|
|
pub constants: wgpu::BindGroup,
|
|
}
|
|
|
|
impl Layer {
|
|
pub fn new(
|
|
device: &wgpu::Device,
|
|
constants_layout: &wgpu::BindGroupLayout,
|
|
) -> Self {
|
|
let vertices = Buffer::new(
|
|
device,
|
|
"iced_wgpu.triangle.gradient.vertex_buffer",
|
|
triangle::INITIAL_VERTEX_COUNT,
|
|
wgpu::BufferUsages::VERTEX | wgpu::BufferUsages::COPY_DST,
|
|
);
|
|
|
|
let uniforms = Buffer::new(
|
|
device,
|
|
"iced_wgpu.triangle.gradient.uniforms",
|
|
1,
|
|
wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST,
|
|
);
|
|
|
|
let constants =
|
|
Self::bind_group(device, &uniforms.raw, constants_layout);
|
|
|
|
Self {
|
|
vertices,
|
|
uniforms,
|
|
constants,
|
|
}
|
|
}
|
|
|
|
pub fn bind_group(
|
|
device: &wgpu::Device,
|
|
uniform_buffer: &wgpu::Buffer,
|
|
layout: &wgpu::BindGroupLayout,
|
|
) -> wgpu::BindGroup {
|
|
device.create_bind_group(&wgpu::BindGroupDescriptor {
|
|
label: Some("iced_wgpu.triangle.gradient.bind_group"),
|
|
layout,
|
|
entries: &[wgpu::BindGroupEntry {
|
|
binding: 0,
|
|
resource: wgpu::BindingResource::Buffer(
|
|
wgpu::BufferBinding {
|
|
buffer: uniform_buffer,
|
|
offset: 0,
|
|
size: triangle::Uniforms::min_size(),
|
|
},
|
|
),
|
|
}],
|
|
})
|
|
}
|
|
}
|
|
|
|
impl Pipeline {
|
|
pub fn new(
|
|
device: &wgpu::Device,
|
|
format: wgpu::TextureFormat,
|
|
antialiasing: Option<Antialiasing>,
|
|
) -> Self {
|
|
let constants_layout = device.create_bind_group_layout(
|
|
&wgpu::BindGroupLayoutDescriptor {
|
|
label: Some(
|
|
"iced_wgpu.triangle.gradient.bind_group_layout",
|
|
),
|
|
entries: &[triangle::Uniforms::entry()],
|
|
},
|
|
);
|
|
|
|
let layout = device.create_pipeline_layout(
|
|
&wgpu::PipelineLayoutDescriptor {
|
|
label: Some("iced_wgpu.triangle.gradient.pipeline_layout"),
|
|
bind_group_layouts: &[&constants_layout],
|
|
push_constant_ranges: &[],
|
|
},
|
|
);
|
|
|
|
let shader =
|
|
device.create_shader_module(wgpu::ShaderModuleDescriptor {
|
|
label: Some("iced_wgpu.triangle.gradient.shader"),
|
|
source: wgpu::ShaderSource::Wgsl(
|
|
std::borrow::Cow::Borrowed(
|
|
if color::GAMMA_CORRECTION {
|
|
concat!(
|
|
include_str!("shader/triangle.wgsl"),
|
|
"\n",
|
|
include_str!(
|
|
"shader/triangle/gradient.wgsl"
|
|
),
|
|
"\n",
|
|
include_str!("shader/color/oklab.wgsl")
|
|
)
|
|
} else {
|
|
concat!(
|
|
include_str!("shader/triangle.wgsl"),
|
|
"\n",
|
|
include_str!(
|
|
"shader/triangle/gradient.wgsl"
|
|
),
|
|
"\n",
|
|
include_str!(
|
|
"shader/color/linear_rgb.wgsl"
|
|
)
|
|
)
|
|
},
|
|
),
|
|
),
|
|
});
|
|
|
|
let pipeline = device.create_render_pipeline(
|
|
&wgpu::RenderPipelineDescriptor {
|
|
label: Some("iced_wgpu.triangle.gradient.pipeline"),
|
|
layout: Some(&layout),
|
|
vertex: wgpu::VertexState {
|
|
module: &shader,
|
|
entry_point: Some("gradient_vs_main"),
|
|
buffers: &[wgpu::VertexBufferLayout {
|
|
array_stride: std::mem::size_of::<
|
|
mesh::GradientVertex2D,
|
|
>()
|
|
as u64,
|
|
step_mode: wgpu::VertexStepMode::Vertex,
|
|
attributes: &wgpu::vertex_attr_array!(
|
|
// Position
|
|
0 => Float32x2,
|
|
// Colors 1-2
|
|
1 => Uint32x4,
|
|
// Colors 3-4
|
|
2 => Uint32x4,
|
|
// Colors 5-6
|
|
3 => Uint32x4,
|
|
// Colors 7-8
|
|
4 => Uint32x4,
|
|
// Offsets
|
|
5 => Uint32x4,
|
|
// Direction
|
|
6 => Float32x4
|
|
),
|
|
}],
|
|
compilation_options:
|
|
wgpu::PipelineCompilationOptions::default(),
|
|
},
|
|
fragment: Some(wgpu::FragmentState {
|
|
module: &shader,
|
|
entry_point: Some("gradient_fs_main"),
|
|
targets: &[Some(triangle::fragment_target(format))],
|
|
compilation_options:
|
|
wgpu::PipelineCompilationOptions::default(),
|
|
}),
|
|
primitive: triangle::primitive_state(),
|
|
depth_stencil: None,
|
|
multisample: triangle::multisample_state(antialiasing),
|
|
multiview: None,
|
|
cache: None,
|
|
},
|
|
);
|
|
|
|
Self {
|
|
pipeline,
|
|
constants_layout,
|
|
}
|
|
}
|
|
}
|
|
}
|