borked
This commit is contained in:
294
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294
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use crate::xr_input::{QuatConv, Vec3Conv};
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use crate::{LEFT_XR_TEXTURE_HANDLE, RIGHT_XR_TEXTURE_HANDLE};
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use bevy::core_pipeline::tonemapping::{DebandDither, Tonemapping};
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use bevy::ecs::system::lifetimeless::Read;
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use bevy::math::Vec3A;
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use bevy::prelude::*;
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use bevy::render::camera::{CameraProjection, CameraRenderGraph, RenderTarget};
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use bevy::render::extract_component::ExtractComponent;
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use bevy::render::primitives::Frustum;
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use bevy::render::view::{ColorGrading, VisibleEntities};
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use openxr::Fovf;
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#[derive(Bundle)]
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pub struct XrCamerasBundle {
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pub left: XrCameraBundle,
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pub right: XrCameraBundle,
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}
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impl XrCamerasBundle {
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pub fn new() -> Self {
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Self::default()
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}
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}
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impl Default for XrCamerasBundle {
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fn default() -> Self {
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Self {
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left: XrCameraBundle::new(Eye::Left),
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right: XrCameraBundle::new(Eye::Right),
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}
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}
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}
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#[derive(Bundle)]
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pub struct XrCameraBundle {
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pub camera: Camera,
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pub camera_render_graph: CameraRenderGraph,
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pub xr_projection: XRProjection,
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pub visible_entities: VisibleEntities,
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pub frustum: Frustum,
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pub transform: Transform,
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pub global_transform: GlobalTransform,
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pub camera_3d: Camera3d,
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pub tonemapping: Tonemapping,
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pub dither: DebandDither,
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pub color_grading: ColorGrading,
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pub xr_camera_type: XrCameraType,
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}
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#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash, Ord, PartialOrd, Component)]
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pub enum XrCameraType {
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Xr(Eye),
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Flatscreen,
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}
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#[derive(Component)]
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pub(super) struct TransformExtract;
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impl ExtractComponent for TransformExtract {
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type Query = Read<Transform>;
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type Filter = ();
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type Out = Transform;
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fn extract_component(item: bevy::ecs::query::QueryItem<'_, Self::Query>) -> Option<Self::Out> {
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info!("extracting Transform");
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Some(*item)
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}
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}
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impl ExtractComponent for XrCameraType {
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type Query = Read<Self>;
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type Filter = ();
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type Out = Self;
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fn extract_component(item: bevy::ecs::query::QueryItem<'_, Self::Query>) -> Option<Self::Out> {
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info!("extracting Cam Type");
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Some(*item)
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}
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}
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#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash, Ord, PartialOrd)]
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pub enum Eye {
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Left = 0,
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Right = 1,
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}
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impl XrCameraBundle {
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pub fn new(eye: Eye) -> Self {
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Self {
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camera: Camera {
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order: -1,
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target: RenderTarget::TextureView(match eye {
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Eye::Left => LEFT_XR_TEXTURE_HANDLE,
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Eye::Right => RIGHT_XR_TEXTURE_HANDLE,
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}),
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viewport: None,
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..default()
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},
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camera_render_graph: CameraRenderGraph::new(bevy::core_pipeline::core_3d::graph::NAME),
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xr_projection: Default::default(),
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visible_entities: Default::default(),
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frustum: Default::default(),
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transform: Default::default(),
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global_transform: Default::default(),
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camera_3d: Default::default(),
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tonemapping: Default::default(),
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dither: DebandDither::Enabled,
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color_grading: Default::default(),
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xr_camera_type: XrCameraType::Xr(eye),
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}
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}
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}
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#[derive(Debug, Clone, Component, Reflect, ExtractComponent)]
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#[reflect(Component, Default)]
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pub struct XRProjection {
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pub near: f32,
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pub far: f32,
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#[reflect(ignore)]
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pub fov: Fovf,
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}
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impl Default for XRProjection {
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fn default() -> Self {
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Self {
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near: 0.1,
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far: 1000.,
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fov: Default::default(),
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}
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}
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}
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impl XRProjection {
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pub fn new(near: f32, far: f32, fov: Fovf) -> Self {
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XRProjection { near, far, fov }
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}
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}
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impl CameraProjection for XRProjection {
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// =============================================================================
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// math code adapted from
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// https://github.com/KhronosGroup/OpenXR-SDK-Source/blob/master/src/common/xr_linear.h
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// Copyright (c) 2017 The Khronos Group Inc.
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// Copyright (c) 2016 Oculus VR, LLC.
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// SPDX-License-Identifier: Apache-2.0
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// =============================================================================
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fn get_projection_matrix(&self) -> Mat4 {
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// symmetric perspective for debugging
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// let x_fov = (self.fov.angle_left.abs() + self.fov.angle_right.abs());
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// let y_fov = (self.fov.angle_up.abs() + self.fov.angle_down.abs());
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// return Mat4::perspective_infinite_reverse_rh(y_fov, x_fov / y_fov, self.near);
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let fov = self.fov;
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let is_vulkan_api = false; // FIXME wgpu probably abstracts this
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let near_z = self.near;
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let far_z = -1.; // use infinite proj
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// let far_z = self.far;
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let tan_angle_left = fov.angle_left.tan();
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let tan_angle_right = fov.angle_right.tan();
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let tan_angle_down = fov.angle_down.tan();
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let tan_angle_up = fov.angle_up.tan();
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let tan_angle_width = tan_angle_right - tan_angle_left;
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// Set to tanAngleDown - tanAngleUp for a clip space with positive Y
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// down (Vulkan). Set to tanAngleUp - tanAngleDown for a clip space with
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// positive Y up (OpenGL / D3D / Metal).
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// const float tanAngleHeight =
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// graphicsApi == GRAPHICS_VULKAN ? (tanAngleDown - tanAngleUp) : (tanAngleUp - tanAngleDown);
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let tan_angle_height = if is_vulkan_api {
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tan_angle_down - tan_angle_up
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} else {
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tan_angle_up - tan_angle_down
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};
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// Set to nearZ for a [-1,1] Z clip space (OpenGL / OpenGL ES).
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// Set to zero for a [0,1] Z clip space (Vulkan / D3D / Metal).
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// const float offsetZ =
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// (graphicsApi == GRAPHICS_OPENGL || graphicsApi == GRAPHICS_OPENGL_ES) ? nearZ : 0;
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// FIXME handle enum of graphics apis
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let offset_z = 0.;
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let mut cols: [f32; 16] = [0.0; 16];
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if far_z <= near_z {
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// place the far plane at infinity
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cols[0] = 2. / tan_angle_width;
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cols[4] = 0.;
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cols[8] = (tan_angle_right + tan_angle_left) / tan_angle_width;
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cols[12] = 0.;
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cols[1] = 0.;
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cols[5] = 2. / tan_angle_height;
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cols[9] = (tan_angle_up + tan_angle_down) / tan_angle_height;
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cols[13] = 0.;
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cols[2] = 0.;
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cols[6] = 0.;
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cols[10] = -1.;
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cols[14] = -(near_z + offset_z);
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cols[3] = 0.;
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cols[7] = 0.;
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cols[11] = -1.;
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cols[15] = 0.;
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// bevy uses the _reverse_ infinite projection
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// https://dev.theomader.com/depth-precision/
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let z_reversal = Mat4::from_cols_array_2d(&[
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[1f32, 0., 0., 0.],
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[0., 1., 0., 0.],
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[0., 0., -1., 0.],
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[0., 0., 1., 1.],
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]);
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return z_reversal * Mat4::from_cols_array(&cols);
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} else {
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// normal projection
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cols[0] = 2. / tan_angle_width;
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cols[4] = 0.;
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cols[8] = (tan_angle_right + tan_angle_left) / tan_angle_width;
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cols[12] = 0.;
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cols[1] = 0.;
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cols[5] = 2. / tan_angle_height;
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cols[9] = (tan_angle_up + tan_angle_down) / tan_angle_height;
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cols[13] = 0.;
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cols[2] = 0.;
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cols[6] = 0.;
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cols[10] = -(far_z + offset_z) / (far_z - near_z);
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cols[14] = -(far_z * (near_z + offset_z)) / (far_z - near_z);
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cols[3] = 0.;
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cols[7] = 0.;
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cols[11] = -1.;
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cols[15] = 0.;
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}
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Mat4::from_cols_array(&cols)
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}
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fn update(&mut self, _width: f32, _height: f32) {}
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fn far(&self) -> f32 {
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self.far
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}
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fn get_frustum_corners(&self, z_near: f32, z_far: f32) -> [Vec3A; 8] {
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let tan_angle_left = self.fov.angle_left.tan();
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let tan_angle_right = self.fov.angle_right.tan();
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let tan_angle_bottom = self.fov.angle_down.tan();
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let tan_angle_top = self.fov.angle_up.tan();
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// NOTE: These vertices are in the specific order required by [`calculate_cascade`].
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[
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Vec3A::new(tan_angle_right, tan_angle_bottom, 1.0) * z_near, // bottom right
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Vec3A::new(tan_angle_right, tan_angle_top, 1.0) * z_near, // top right
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Vec3A::new(tan_angle_left, tan_angle_top, 1.0) * z_near, // top left
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Vec3A::new(tan_angle_left, tan_angle_bottom, 1.0) * z_near, // bottom left
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Vec3A::new(tan_angle_right, tan_angle_bottom, 1.0) * z_far, // bottom right
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Vec3A::new(tan_angle_right, tan_angle_top, 1.0) * z_far, // top right
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Vec3A::new(tan_angle_left, tan_angle_top, 1.0) * z_far, // top left
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Vec3A::new(tan_angle_left, tan_angle_bottom, 1.0) * z_far, // bottom left
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]
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}
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}
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pub fn xr_camera_head_sync(
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views: ResMut<crate::resources::XrViews>,
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mut query: Query<(&mut Transform, &XrCameraType, &mut XRProjection)>,
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) {
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//TODO calculate HMD position
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for (mut transform, camera_type, mut xr_projection) in query.iter_mut() {
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let view_idx = match camera_type {
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XrCameraType::Xr(eye) => *eye as usize,
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// I don't belive we need a flatscrenn cam, that's just a cam without this component
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XrCameraType::Flatscreen => continue,
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};
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let view = match views.get(view_idx) {
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Some(views) => views,
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None => continue,
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};
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xr_projection.fov = view.fov;
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transform.rotation = view.pose.orientation.to_quat();
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transform.translation = view.pose.position.to_vec3();
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}
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}
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197
src/xr_init/mod.rs
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197
src/xr_init/mod.rs
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@@ -0,0 +1,197 @@
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pub mod schedules;
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pub use schedules::*;
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use bevy::{
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prelude::*,
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render::{
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camera::{ManualTextureView, ManualTextureViews},
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extract_resource::{ExtractResource, ExtractResourcePlugin},
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renderer::{RenderAdapter, RenderDevice, RenderInstance},
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},
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window::{PrimaryWindow, RawHandleWrapper},
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};
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use crate::{
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graphics,
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resources::{
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OXrSessionSetupInfo, XrFormat, XrInstance, XrResolution, XrSession, XrSessionRunning,
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XrSwapchain,
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},
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LEFT_XR_TEXTURE_HANDLE, RIGHT_XR_TEXTURE_HANDLE,
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};
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#[derive(Resource, Event, Clone, Copy, PartialEq, Eq, Reflect, Debug, ExtractResource)]
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pub enum XrStatus {
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NoInstance,
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Enabled,
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Enabling,
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Disabled,
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Disabling,
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}
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#[derive(
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Resource, Clone, Copy, PartialEq, Eq, Reflect, Debug, ExtractResource, Default, Deref, DerefMut,
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)]
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pub struct XrShouldRender(bool);
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pub struct XrEarlyInitPlugin;
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pub struct XrInitPlugin;
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pub fn xr_only() -> impl FnMut(Option<Res<XrStatus>>) -> bool {
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resource_exists_and_equals(XrStatus::Enabled)
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}
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pub fn xr_render_only() -> impl FnMut(Option<Res<XrShouldRender>>) -> bool {
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resource_exists_and_equals(XrShouldRender(true))
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}
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impl Plugin for XrEarlyInitPlugin {
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fn build(&self, app: &mut App) {
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app.add_event::<SetupXrData>()
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.add_event::<CleanupXrData>()
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.add_event::<StartXrSession>()
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.add_event::<EndXrSession>();
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}
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}
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impl Plugin for XrInitPlugin {
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fn build(&self, app: &mut App) {
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add_schedules(app);
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app.add_plugins(ExtractResourcePlugin::<XrStatus>::default());
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app.add_plugins(ExtractResourcePlugin::<XrShouldRender>::default());
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app.init_resource::<XrShouldRender>();
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app.add_systems(PreUpdate, setup_xr.run_if(on_event::<SetupXrData>()))
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.add_systems(PreUpdate, cleanup_xr.run_if(on_event::<CleanupXrData>()));
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app.add_systems(
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PostUpdate,
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start_xr_session.run_if(on_event::<StartXrSession>()),
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);
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app.add_systems(
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PostUpdate,
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stop_xr_session.run_if(on_event::<EndXrSession>()),
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);
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app.add_systems(XrSetup, setup_manual_texture_views);
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}
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}
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fn setup_manual_texture_views(
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mut manual_texture_views: ResMut<ManualTextureViews>,
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swapchain: Res<XrSwapchain>,
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xr_resolution: Res<XrResolution>,
|
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xr_format: Res<XrFormat>,
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||||
) {
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info!("Creating Texture views");
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||||
let (left, right) = swapchain.get_render_views();
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let left = ManualTextureView {
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texture_view: left.into(),
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size: **xr_resolution,
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format: **xr_format,
|
||||
};
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||||
let right = ManualTextureView {
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texture_view: right.into(),
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||||
size: **xr_resolution,
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||||
format: **xr_format,
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||||
};
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||||
manual_texture_views.insert(LEFT_XR_TEXTURE_HANDLE, left);
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||||
manual_texture_views.insert(RIGHT_XR_TEXTURE_HANDLE, right);
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||||
}
|
||||
|
||||
pub fn setup_xr(world: &mut World) {
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||||
world.run_schedule(XrPreSetup);
|
||||
world.run_schedule(XrSetup);
|
||||
world.run_schedule(XrPrePostSetup);
|
||||
world.run_schedule(XrPostSetup);
|
||||
*world.resource_mut::<XrStatus>() = XrStatus::Enabled;
|
||||
}
|
||||
fn cleanup_xr(world: &mut World) {
|
||||
world.run_schedule(XrPreCleanup);
|
||||
world.run_schedule(XrCleanup);
|
||||
world.run_schedule(XrPostCleanup);
|
||||
*world.resource_mut::<XrStatus>() = XrStatus::Disabled;
|
||||
}
|
||||
|
||||
#[derive(Event, Clone, Copy, Default)]
|
||||
pub struct StartXrSession;
|
||||
|
||||
#[derive(Event, Clone, Copy, Default)]
|
||||
pub struct EndXrSession;
|
||||
|
||||
#[derive(Event, Clone, Copy, Default)]
|
||||
struct SetupXrData;
|
||||
#[derive(Event, Clone, Copy, Default)]
|
||||
pub(crate) struct CleanupXrData;
|
||||
|
||||
#[allow(clippy::too_many_arguments)]
|
||||
fn start_xr_session(
|
||||
mut commands: Commands,
|
||||
mut setup_xr: EventWriter<SetupXrData>,
|
||||
mut status: ResMut<XrStatus>,
|
||||
instance: Res<XrInstance>,
|
||||
primary_window: Query<&RawHandleWrapper, With<PrimaryWindow>>,
|
||||
setup_info: NonSend<OXrSessionSetupInfo>,
|
||||
render_device: Res<RenderDevice>,
|
||||
render_adapter: Res<RenderAdapter>,
|
||||
render_instance: Res<RenderInstance>,
|
||||
) {
|
||||
info!("start Session");
|
||||
match *status {
|
||||
XrStatus::Disabled => {}
|
||||
XrStatus::NoInstance => {
|
||||
warn!("Trying to start OpenXR Session without instance, ignoring");
|
||||
return;
|
||||
}
|
||||
XrStatus::Enabled | XrStatus::Enabling => {
|
||||
warn!("Trying to start OpenXR Session while one already exists, ignoring");
|
||||
return;
|
||||
}
|
||||
XrStatus::Disabling => {
|
||||
warn!("Trying to start OpenXR Session while one is stopping, ignoring");
|
||||
return;
|
||||
}
|
||||
}
|
||||
let (
|
||||
xr_session,
|
||||
xr_resolution,
|
||||
xr_format,
|
||||
xr_session_running,
|
||||
xr_frame_waiter,
|
||||
xr_swapchain,
|
||||
xr_input,
|
||||
xr_views,
|
||||
xr_frame_state,
|
||||
) = match graphics::start_xr_session(
|
||||
primary_window.get_single().cloned().ok(),
|
||||
&setup_info,
|
||||
&instance,
|
||||
&render_device,
|
||||
&render_adapter,
|
||||
&render_instance,
|
||||
) {
|
||||
Ok(data) => data,
|
||||
Err(err) => {
|
||||
error!("Unable to start OpenXR Session: {}", err);
|
||||
return;
|
||||
}
|
||||
};
|
||||
commands.insert_resource(xr_session);
|
||||
commands.insert_resource(xr_resolution);
|
||||
commands.insert_resource(xr_format);
|
||||
commands.insert_resource(xr_session_running);
|
||||
commands.insert_resource(xr_frame_waiter);
|
||||
commands.insert_resource(xr_swapchain);
|
||||
commands.insert_resource(xr_input);
|
||||
commands.insert_resource(xr_views);
|
||||
commands.insert_resource(xr_frame_state);
|
||||
*status = XrStatus::Enabling;
|
||||
setup_xr.send_default();
|
||||
}
|
||||
|
||||
fn stop_xr_session(session: ResMut<XrSession>, mut status: ResMut<XrStatus>) {
|
||||
match session.request_exit() {
|
||||
Ok(_) => {}
|
||||
Err(err) => {
|
||||
error!("Error while trying to request session exit: {}", err)
|
||||
}
|
||||
}
|
||||
*status = XrStatus::Enabling;
|
||||
}
|
||||
51
src/xr_init/schedules.rs
Normal file
51
src/xr_init/schedules.rs
Normal file
@@ -0,0 +1,51 @@
|
||||
use bevy::{ecs::schedule::{ScheduleLabel, Schedule, ExecutorKind}, app::App};
|
||||
|
||||
#[derive(Debug, ScheduleLabel, Clone, Copy, Hash, PartialEq, Eq)]
|
||||
pub struct XrPreSetup;
|
||||
|
||||
#[derive(Debug, ScheduleLabel, Clone, Copy, Hash, PartialEq, Eq)]
|
||||
pub struct XrSetup;
|
||||
|
||||
#[derive(Debug, ScheduleLabel, Clone, Copy, Hash, PartialEq, Eq)]
|
||||
pub struct XrPrePostSetup;
|
||||
|
||||
#[derive(Debug, ScheduleLabel, Clone, Copy, Hash, PartialEq, Eq)]
|
||||
pub struct XrPostSetup;
|
||||
|
||||
#[derive(Debug, ScheduleLabel, Clone, Copy, Hash, PartialEq, Eq)]
|
||||
pub struct XrPreCleanup;
|
||||
|
||||
#[derive(Debug, ScheduleLabel, Clone, Copy, Hash, PartialEq, Eq)]
|
||||
pub struct XrCleanup;
|
||||
|
||||
#[derive(Debug, ScheduleLabel, Clone, Copy, Hash, PartialEq, Eq)]
|
||||
pub struct XrPostCleanup;
|
||||
|
||||
#[derive(Debug, ScheduleLabel, Clone, Copy, Hash, PartialEq, Eq)]
|
||||
pub struct XrPreRenderUpdate;
|
||||
|
||||
#[derive(Debug, ScheduleLabel, Clone, Copy, Hash, PartialEq, Eq)]
|
||||
pub struct XrRenderUpdate;
|
||||
|
||||
#[derive(Debug, ScheduleLabel, Clone, Copy, Hash, PartialEq, Eq)]
|
||||
pub struct XrPostRenderUpdate;
|
||||
|
||||
pub(super) fn add_schedules(app: &mut App) {
|
||||
let schedules = [
|
||||
Schedule::new(XrPreSetup),
|
||||
Schedule::new(XrSetup),
|
||||
Schedule::new(XrPrePostSetup),
|
||||
Schedule::new(XrPostSetup),
|
||||
Schedule::new(XrPreRenderUpdate),
|
||||
Schedule::new(XrRenderUpdate),
|
||||
Schedule::new(XrPostRenderUpdate),
|
||||
Schedule::new(XrPreCleanup),
|
||||
Schedule::new(XrCleanup),
|
||||
Schedule::new(XrPostCleanup),
|
||||
];
|
||||
for mut schedule in schedules {
|
||||
schedule.set_executor_kind(ExecutorKind::SingleThreaded);
|
||||
schedule.set_apply_final_deferred(true);
|
||||
app.add_schedule(schedule);
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user