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Add depth buffer support for egui-wgpu's render pass (#2002)

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* add a depth texture for wgpu callbacks

* egui-wgpu: use depth from native_options

* add wgpu caveat to depth_buffer docstring
This commit is contained in:
Romet Tagobert
2022-09-06 15:37:07 +03:00
committed by GitHub
parent 162210f90e
commit 64aac30f36
4 changed files with 70 additions and 5 deletions
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6
crates/eframe/src/epi.rs
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@@ -259,6 +259,10 @@ pub struct NativeOptions {
/// Sets the number of bits in the depth buffer.
///
/// `egui` doesn't need the depth buffer, so the default value is 0.
///
/// On `wgpu` backends, due to limited depth texture format options, this
/// will be interpreted as a boolean (non-zero = true) for whether or not
/// specifically a `Depth32Float` buffer is used.
pub depth_buffer: u8,
/// Sets the number of bits in the stencil buffer.
@@ -266,7 +270,7 @@ pub struct NativeOptions {
/// `egui` doesn't need the stencil buffer, so the default value is 0.
pub stencil_buffer: u8,
/// Specify wether or not hardware acceleration is preferred, required, or not.
/// Specify whether or not hardware acceleration is preferred, required, or not.
///
/// Default: [`HardwareAcceleration::Preferred`].
pub hardware_acceleration: HardwareAcceleration,

9
crates/eframe/src/native/run.rs
View File

@@ -683,6 +683,12 @@ mod wgpu_integration {
storage: Option<Box<dyn epi::Storage>>,
window: winit::window::Window,
) {
let mut limits = wgpu::Limits::downlevel_webgl2_defaults();
if self.native_options.depth_buffer > 0 {
// When using a depth buffer, we have to be able to create a texture large enough for the entire surface.
limits.max_texture_dimension_2d = 8192;
}
#[allow(unsafe_code, unused_mut, unused_unsafe)]
let painter = unsafe {
let mut painter = egui_wgpu::winit::Painter::new(
@@ -691,10 +697,11 @@ mod wgpu_integration {
wgpu::DeviceDescriptor {
label: None,
features: wgpu::Features::default(),
limits: wgpu::Limits::downlevel_webgl2_defaults(),
limits,
},
wgpu::PresentMode::Fifo,
self.native_options.multisampling.max(1) as _,
self.native_options.depth_buffer,
);
painter.set_window(Some(&window));
painter