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use iced_wgpu::wgpu;
use iced_winit::core::Color;
pub struct Scene {
pipeline: wgpu::RenderPipeline,
}
impl Scene {
pub fn new(
device: &wgpu::Device,
texture_format: wgpu::TextureFormat,
) -> Scene {
let pipeline = build_pipeline(device, texture_format);
Scene { pipeline }
}
pub fn clear<'a>(
target: &'a wgpu::TextureView,
encoder: &'a mut wgpu::CommandEncoder,
background_color: Color,
) -> wgpu::RenderPass<'a> {
encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
label: None,
color_attachments: &[Some(wgpu::RenderPassColorAttachment {
view: target,
resolve_target: None,
ops: wgpu::Operations {
load: wgpu::LoadOp::Clear({
let [r, g, b, a] = background_color.into_linear();
wgpu::Color {
r: r as f64,
g: g as f64,
b: b as f64,
a: a as f64,
}
}),
store: wgpu::StoreOp::Store,
},
})],
depth_stencil_attachment: None,
timestamp_writes: None,
occlusion_query_set: None,
})
}
pub fn draw<'a>(&'a self, render_pass: &mut wgpu::RenderPass<'a>) {
render_pass.set_pipeline(&self.pipeline);
render_pass.draw(0..3, 0..1);
}
}
fn build_pipeline(
device: &wgpu::Device,
texture_format: wgpu::TextureFormat,
) -> wgpu::RenderPipeline {
let (vs_module, fs_module) = (
device.create_shader_module(wgpu::include_wgsl!("shader/vert.wgsl")),
device.create_shader_module(wgpu::include_wgsl!("shader/frag.wgsl")),
);
let pipeline_layout =
device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
label: None,
push_constant_ranges: &[],
bind_group_layouts: &[],
});
device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
label: None,
layout: Some(&pipeline_layout),
vertex: wgpu::VertexState {
module: &vs_module,
entry_point: "main",
buffers: &[],
},
fragment: Some(wgpu::FragmentState {
module: &fs_module,
entry_point: "main",
targets: &[Some(wgpu::ColorTargetState {
format: texture_format,
blend: Some(wgpu::BlendState {
color: wgpu::BlendComponent::REPLACE,
alpha: wgpu::BlendComponent::REPLACE,
}),
write_mask: wgpu::ColorWrites::ALL,
})],
}),
primitive: wgpu::PrimitiveState {
topology: wgpu::PrimitiveTopology::TriangleList,
front_face: wgpu::FrontFace::Ccw,
..Default::default()
},
depth_stencil: None,
multisample: wgpu::MultisampleState {
count: 1,
mask: !0,
alpha_to_coverage_enabled: false,
},
multiview: None,
})
}
|
