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Provide some margin to static buffers when growing

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Héctor Ramón Jiménez 2023-02-09 06:54:51 +01:00
parent 0715d7d0c7
commit 2097a56b58
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GPG key ID: 140CC052C94F138E
2 changed files with 9 additions and 6 deletions
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13
wgpu/src/buffer/static.rs
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@ -2,8 +2,7 @@ use bytemuck::{Pod, Zeroable};
use std::marker::PhantomData;
use std::mem;
//128 triangles/indices
const DEFAULT_STATIC_BUFFER_COUNT: wgpu::BufferAddress = 1_000;
const DEFAULT_COUNT: wgpu::BufferAddress = 128;
/// A generic buffer struct useful for items which have no alignment requirements
/// (e.g. Vertex, Index buffers) & no dynamic offsets.
@ -25,7 +24,7 @@ impl<T: Pod + Zeroable> Buffer<T> {
label: &'static str,
usages: wgpu::BufferUsages,
) -> Self {
let size = (mem::size_of::<T>() as u64) * DEFAULT_STATIC_BUFFER_COUNT;
let size = (mem::size_of::<T>() as u64) * DEFAULT_COUNT;
Self {
offsets: Vec::new(),
@ -57,9 +56,13 @@ impl<T: Pod + Zeroable> Buffer<T> {
let size = (mem::size_of::<T>() * new_count) as u64;
if self.size < size {
self.size =
(mem::size_of::<T>() * (new_count + new_count / 2)) as u64;
self.gpu =
Self::gpu_buffer(device, self.label, self.size, self.usages);
self.offsets.clear();
self.size = size;
self.gpu = Self::gpu_buffer(device, self.label, size, self.usages);
true
} else {
false

2
wgpu/src/triangle.rs
View file

@ -43,7 +43,7 @@ impl Layer {
Self {
index_buffer: Buffer::new(
device,
"iced_wgpu::triangle vertex buffer",
"iced_wgpu::triangle index buffer",
wgpu::BufferUsages::INDEX | wgpu::BufferUsages::COPY_DST,
),
index_strides: Vec::new(),