bevy/crates/bevy_render/src/globals.rs
Zachary Harrold 21786632c3
Remove bevy_core (#16897)
# Objective

- Fixes #16892

## Solution

- Removed `TypeRegistryPlugin` (`Name` is now automatically registered
with a default `App`)
- Moved `TaskPoolPlugin` to `bevy_app`
- Moved `FrameCountPlugin` to `bevy_diagnostic`
- Deleted now-empty `bevy_core`

## Testing

- CI

## Migration Guide

- `TypeRegistryPlugin` no longer exists. If you can't use a default
`App` but still need `Name` registered, do so manually with
`app.register_type::<Name>()`.
- References to `TaskPoolPlugin` and associated types will need to
import it from `bevy_app` instead of `bevy_core`
- References to `FrameCountPlugin` and associated types will need to
import it from `bevy_diagnostic` instead of `bevy_core`

## Notes

This strategy was agreed upon by Cart and several other members in
[Discord](https://discord.com/channels/691052431525675048/692572690833473578/1319137218312278077).
2024-12-19 18:36:51 +00:00

85 lines
2.7 KiB
Rust

use crate::{
extract_resource::ExtractResource,
prelude::Shader,
render_resource::{ShaderType, UniformBuffer},
renderer::{RenderDevice, RenderQueue},
Extract, ExtractSchedule, Render, RenderApp, RenderSet,
};
use bevy_app::{App, Plugin};
use bevy_asset::{load_internal_asset, Handle};
use bevy_diagnostic::FrameCount;
use bevy_ecs::prelude::*;
use bevy_reflect::prelude::*;
use bevy_time::Time;
pub const GLOBALS_TYPE_HANDLE: Handle<Shader> = Handle::weak_from_u128(17924628719070609599);
pub struct GlobalsPlugin;
impl Plugin for GlobalsPlugin {
fn build(&self, app: &mut App) {
load_internal_asset!(app, GLOBALS_TYPE_HANDLE, "globals.wgsl", Shader::from_wgsl);
app.register_type::<GlobalsUniform>();
if let Some(render_app) = app.get_sub_app_mut(RenderApp) {
render_app
.init_resource::<GlobalsBuffer>()
.init_resource::<Time>()
.add_systems(ExtractSchedule, (extract_frame_count, extract_time))
.add_systems(
Render,
prepare_globals_buffer.in_set(RenderSet::PrepareResources),
);
}
}
}
fn extract_frame_count(mut commands: Commands, frame_count: Extract<Res<FrameCount>>) {
commands.insert_resource(**frame_count);
}
fn extract_time(mut commands: Commands, time: Extract<Res<Time>>) {
commands.insert_resource(**time);
}
/// Contains global values useful when writing shaders.
/// Currently only contains values related to time.
#[derive(Default, Clone, Resource, ExtractResource, Reflect, ShaderType)]
#[reflect(Resource, Default)]
pub struct GlobalsUniform {
/// The time since startup in seconds.
/// Wraps to 0 after 1 hour.
time: f32,
/// The delta time since the previous frame in seconds
delta_time: f32,
/// Frame count since the start of the app.
/// It wraps to zero when it reaches the maximum value of a u32.
frame_count: u32,
/// WebGL2 structs must be 16 byte aligned.
#[cfg(all(feature = "webgl", target_arch = "wasm32", not(feature = "webgpu")))]
_wasm_padding: f32,
}
/// The buffer containing the [`GlobalsUniform`]
#[derive(Resource, Default)]
pub struct GlobalsBuffer {
pub buffer: UniformBuffer<GlobalsUniform>,
}
fn prepare_globals_buffer(
render_device: Res<RenderDevice>,
render_queue: Res<RenderQueue>,
mut globals_buffer: ResMut<GlobalsBuffer>,
time: Res<Time>,
frame_count: Res<FrameCount>,
) {
let buffer = globals_buffer.buffer.get_mut();
buffer.time = time.elapsed_secs_wrapped();
buffer.delta_time = time.delta_secs();
buffer.frame_count = frame_count.0;
globals_buffer
.buffer
.write_buffer(&render_device, &render_queue);
}