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Compute vertex position in shader

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This commit is contained in:
Jim Eckerlein 2023-09-24 15:10:19 +02:00
parent bc9bb28b1c
commit 3f467d1212
6 changed files with 60 additions and 128 deletions
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61
wgpu/src/quad.rs
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@ -9,7 +9,6 @@ use crate::graphics::color;
use crate::graphics::{self, Transformation};
use bytemuck::{Pod, Zeroable};
use wgpu::util::DeviceExt;
use std::mem;
@ -23,8 +22,6 @@ pub struct Pipeline {
solid: solid::Pipeline,
gradient: gradient::Pipeline,
constant_layout: wgpu::BindGroupLayout,
vertices: wgpu::Buffer,
indices: wgpu::Buffer,
layers: Vec<Layer>,
prepare_layer: usize,
}
@ -48,23 +45,7 @@ impl Pipeline {
}],
});
let vertices =
device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
label: Some("iced_wgpu::quad vertex buffer"),
contents: bytemuck::cast_slice(&VERTICES),
usage: wgpu::BufferUsages::VERTEX,
});
let indices =
device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
label: Some("iced_wgpu::quad index buffer"),
contents: bytemuck::cast_slice(&INDICES),
usage: wgpu::BufferUsages::INDEX,
});
Self {
vertices,
indices,
solid: solid::Pipeline::new(device, format, &constant_layout),
gradient: gradient::Pipeline::new(device, format, &constant_layout),
layers: Vec::new(),
@ -105,11 +86,6 @@ impl Pipeline {
bounds.width,
bounds.height,
);
render_pass.set_index_buffer(
self.indices.slice(..),
wgpu::IndexFormat::Uint16,
);
render_pass.set_vertex_buffer(0, self.vertices.slice(..));
let mut solid_offset = 0;
let mut gradient_offset = 0;
@ -311,43 +287,6 @@ fn color_target_state(
})]
}
#[repr(C)]
#[derive(Clone, Copy, bytemuck::Zeroable, bytemuck::Pod)]
pub struct Vertex {
_position: [f32; 2],
}
impl Vertex {
fn buffer_layout<'a>() -> wgpu::VertexBufferLayout<'a> {
wgpu::VertexBufferLayout {
array_stride: mem::size_of::<Self>() as u64,
step_mode: wgpu::VertexStepMode::Vertex,
attributes: &[wgpu::VertexAttribute {
shader_location: 0,
format: wgpu::VertexFormat::Float32x2,
offset: 0,
}],
}
}
}
const INDICES: [u16; 6] = [0, 1, 2, 0, 2, 3];
const VERTICES: [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(Debug, Clone, Copy, bytemuck::Zeroable, bytemuck::Pod)]
struct Uniforms {