mirror of
https://gitlab.com/veloren/veloren.git
synced 2024-08-30 18:12:32 +00:00
1212 lines
47 KiB
Rust
1212 lines
47 KiB
Rust
pub mod camera;
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pub mod debug;
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pub mod figure;
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pub mod lod;
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pub mod math;
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pub mod particle;
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pub mod simple;
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pub mod terrain;
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pub use self::{
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camera::{Camera, CameraMode},
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debug::{Debug, DebugShape, DebugShapeId},
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figure::FigureMgr,
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lod::Lod,
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particle::ParticleMgr,
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terrain::{SpriteRenderContextLazy, Terrain},
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};
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use crate::{
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audio::{ambient::AmbientMgr, music::MusicMgr, sfx::SfxMgr, AudioFrontend},
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render::{
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create_skybox_mesh, CloudsLocals, Consts, Drawer, GlobalModel, Globals, GlobalsBindGroup,
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Light, Model, PointLightMatrix, PostProcessLocals, Renderer, Shadow, ShadowLocals,
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SkyboxVertex,
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},
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settings::Settings,
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window::{AnalogGameInput, Event},
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};
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use client::Client;
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use common::{
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comp,
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outcome::Outcome,
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resources::DeltaTime,
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terrain::{BlockKind, TerrainChunk},
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vol::ReadVol,
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};
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use common_base::{prof_span, span};
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use common_state::State;
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use comp::item::Reagent;
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use hashbrown::HashMap;
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use num::traits::{Float, FloatConst};
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use specs::{Entity as EcsEntity, Join, WorldExt};
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use vek::*;
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const ZOOM_CAP: f32 = 10000.0;
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// TODO: Don't hard-code this.
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const CURSOR_PAN_SCALE: f32 = 0.005;
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const MAX_LIGHT_COUNT: usize = 20; // 31 (total shadow_mats is limited to 128 with default max_uniform_buffer_binding_size)
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const MAX_SHADOW_COUNT: usize = 24;
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const NUM_DIRECTED_LIGHTS: usize = 1;
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const LIGHT_DIST_RADIUS: f32 = 64.0; // The distance beyond which lights may not emit light from their origin
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const SHADOW_DIST_RADIUS: f32 = 8.0;
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const SHADOW_MAX_DIST: f32 = 96.0; // The distance beyond which shadows may not be visible
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/// The minimum sin γ we will use before switching to uniform mapping.
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const EPSILON_UPSILON: f64 = -1.0;
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const SHADOW_NEAR: f32 = 0.25; // Near plane for shadow map point light rendering.
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const SHADOW_FAR: f32 = 128.0; // Far plane for shadow map point light rendering.
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/// Above this speed is considered running
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/// Used for first person camera effects
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const RUNNING_THRESHOLD: f32 = 0.7;
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/// is_daylight, array of active lights.
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pub type LightData<'a> = (bool, &'a [Light]);
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struct EventLight {
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light: Light,
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timeout: f32,
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fadeout: fn(f32) -> f32,
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}
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struct Skybox {
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model: Model<SkyboxVertex>,
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}
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pub struct Scene {
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data: GlobalModel,
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globals_bind_group: GlobalsBindGroup,
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camera: Camera,
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camera_input_state: Vec2<f32>,
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event_lights: Vec<EventLight>,
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skybox: Skybox,
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terrain: Terrain<TerrainChunk>,
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pub debug: Debug,
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pub lod: Lod,
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loaded_distance: f32,
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/// x coordinate is sea level (minimum height for any land chunk), and y
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/// coordinate is the maximum height above the mnimimum for any land
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/// chunk.
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map_bounds: Vec2<f32>,
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select_pos: Option<Vec3<i32>>,
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light_data: Vec<Light>,
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particle_mgr: ParticleMgr,
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figure_mgr: FigureMgr,
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pub sfx_mgr: SfxMgr,
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music_mgr: MusicMgr,
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ambient_mgr: AmbientMgr,
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}
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pub struct SceneData<'a> {
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pub client: &'a Client,
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pub state: &'a State,
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pub player_entity: specs::Entity,
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pub target_entity: Option<specs::Entity>,
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pub loaded_distance: f32,
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pub view_distance: u32,
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pub tick: u64,
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pub gamma: f32,
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pub exposure: f32,
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pub ambiance: f32,
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pub mouse_smoothing: bool,
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pub sprite_render_distance: f32,
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pub particles_enabled: bool,
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pub figure_lod_render_distance: f32,
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pub is_aiming: bool,
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}
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impl<'a> SceneData<'a> {
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pub fn get_sun_dir(&self) -> Vec3<f32> { Globals::get_sun_dir(self.state.get_time_of_day()) }
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pub fn get_moon_dir(&self) -> Vec3<f32> { Globals::get_moon_dir(self.state.get_time_of_day()) }
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}
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/// Approximate a scalar field of view angle using the parameterization from
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/// section 4.3 of Lloyd's thesis:
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///
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/// W_e = 2 n_e tan θ
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///
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/// where
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///
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/// W_e = 2 is the width of the image plane (for our projections, since they go
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/// from -1 to 1) n_e = near_plane is the near plane for the view frustum
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/// θ = (fov / 2) is the half-angle of the FOV (the one passed to
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/// Mat4::projection_rh_zo).
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///
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/// Although the widths for the x and y image planes are the same, they are
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/// different in this framework due to the introduction of an aspect ratio:
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///
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/// y'(p) = 1.0 / tan(fov / 2) * p.y / -p.z
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/// x'(p) = 1.0 / (aspect * tan(fov / 2)) * p.x / -p.z
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///
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/// i.e.
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///
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/// y'(x, y, -near, w) = 1 / tan(fov / 2) p.y / near
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/// x'(x, y, -near, w) = 1 / (aspect * tan(fov / 2)) p.x / near
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///
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/// W_e,y = 2 * near_plane * tan(fov / 2)
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/// W_e,x = 2 * near_plane * aspect * W_e,y
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///
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/// Θ_x = atan(W_e_y / 2 / near_plane) = atanfov / t()
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///
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/// i.e. we have an "effective" W_e_x of
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///
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/// 2 = 2 * near_plane * tan Θ
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///
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/// atan(1 / near_plane) = θ
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///
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/// y'
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/// x(-near)
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/// W_e = 2 * near_plane *
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///
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/// W_e_y / n_e = tan (fov / 2)
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/// W_e_x = 2 n
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fn compute_scalar_fov<F: Float>(_near_plane: F, fov: F, aspect: F) -> F {
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let two = F::one() + F::one();
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let theta_y = fov / two;
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let theta_x = (aspect * theta_y.tan()).atan();
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theta_x.min(theta_y)
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}
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/// Compute a near-optimal warping parameter that helps minimize error in a
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/// shadow map.
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///
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/// See section 5.2 of Brandon Lloyd's thesis:
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///
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/// [http://gamma.cs.unc.edu/papers/documents/dissertations/lloyd07.pdf](Logarithmic Perspective Shadow Maps).
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///
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/// η =
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/// 0 γ < γ_a
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/// -1 + (η_b + 1)(1 + cos(90 (γ - γ_a)/(γ_b - γ_a))) γ_a ≤ γ < γ_b
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/// η_b + (η_c - η_b) sin(90 (γ - γ_b)/(γ_c - γ_b)) γ_b ≤ γ < γ_c
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/// η_c γ_c ≤ γ
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///
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/// NOTE: Equation's described behavior is *wrong!* I have pieced together a
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/// slightly different function that seems to more closely satisfy the author's
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/// intent:
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///
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/// η =
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/// -1 γ < γ_a
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/// -1 + (η_b + 1) (γ - γ_a)/(γ_b - γ_a) γ_a ≤ γ < γ_b
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/// η_b + (η_c - η_b) sin(90 (γ - γ_b)/(γ_c - γ_b)) γ_b ≤ γ < γ_c
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/// η_c γ_c ≤ γ
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///
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/// There are other alternatives that may have more desirable properties, such
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/// as:
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///
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/// η =
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/// -1 γ < γ_a
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/// -1 + (η_b + 1)(1 - cos(90 (γ - γ_a)/(γ_b - γ_a))) γ_a ≤ γ < γ_b
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/// η_b + (η_c - η_b) sin(90 (γ - γ_b)/(γ_c - γ_b)) γ_b ≤ γ < γ_c
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/// η_c γ_c ≤ γ
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fn compute_warping_parameter<F: Float + FloatConst>(
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gamma: F,
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(gamma_a, gamma_b, gamma_c): (F, F, F),
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(eta_b, eta_c): (F, F),
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) -> F {
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if gamma < gamma_a {
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-F::one()
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/* F::zero() */
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} else if gamma_a <= gamma && gamma < gamma_b {
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/* -F::one() + (eta_b + F::one()) * (F::one() + (F::FRAC_PI_2() * (gamma - gamma_a) / (gamma_b - gamma_a)).cos()) */
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-F::one() + (eta_b + F::one()) * (F::one() - (F::FRAC_PI_2() * (gamma - gamma_a) / (gamma_b - gamma_a)).cos())
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// -F::one() + (eta_b + F::one()) * ((gamma - gamma_a) / (gamma_b - gamma_a))
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} else if gamma_b <= gamma && gamma < gamma_c {
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eta_b + (eta_c - eta_b) * (F::FRAC_PI_2() * (gamma - gamma_b) / (gamma_c - gamma_b)).sin()
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} else {
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eta_c
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}
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// NOTE: Just in case we go out of range due to floating point imprecision.
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.max(-F::one()).min(F::one())
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}
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/// Compute a near-optimal warping parameter that falls off quickly enough
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/// when the warp angle goes past the minimum field of view angle, for
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/// perspective projections.
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///
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/// For F_p (perspective warping) and view fov angle θ,the parameters are:
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///
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/// γ_a = θ / 3
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/// γ_b = θ
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/// γ_c = θ + 0.3(90 - θ)
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///
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/// η_b = -0.2
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/// η_c = 0
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///
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/// See compute_warping_parameter.
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fn compute_warping_parameter_perspective<F: Float + FloatConst>(
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gamma: F,
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near_plane: F,
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fov: F,
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aspect: F,
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) -> F {
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let theta = compute_scalar_fov(near_plane, fov, aspect);
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let two = F::one() + F::one();
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let three = two + F::one();
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let ten = three + three + three + F::one();
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compute_warping_parameter(
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gamma,
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(
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theta / three,
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theta,
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theta + (three / ten) * (F::FRAC_PI_2() - theta),
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),
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(-two / ten, F::zero()),
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)
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}
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impl Scene {
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/// Create a new `Scene` with default parameters.
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pub fn new(
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renderer: &mut Renderer,
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lazy_init: &mut SpriteRenderContextLazy,
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client: &Client,
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settings: &Settings,
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) -> Self {
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let resolution = renderer.resolution().map(|e| e as f32);
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let sprite_render_context = lazy_init(renderer);
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let data = GlobalModel {
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globals: renderer.create_consts(&[Globals::default()]),
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lights: renderer.create_consts(&[Light::default(); MAX_LIGHT_COUNT]),
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shadows: renderer.create_consts(&[Shadow::default(); MAX_SHADOW_COUNT]),
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shadow_mats: renderer.create_shadow_bound_locals(&[ShadowLocals::default()]),
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point_light_matrices: Box::new([PointLightMatrix::default(); MAX_LIGHT_COUNT * 6 + 6]),
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};
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let lod = Lod::new(renderer, client, settings);
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let globals_bind_group = renderer.bind_globals(&data, lod.get_data());
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let terrain = Terrain::new(renderer, &data, lod.get_data(), sprite_render_context);
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Self {
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data,
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globals_bind_group,
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camera: Camera::new(resolution.x / resolution.y, CameraMode::ThirdPerson),
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camera_input_state: Vec2::zero(),
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event_lights: Vec::new(),
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skybox: Skybox {
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model: renderer.create_model(&create_skybox_mesh()).unwrap(),
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},
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terrain,
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debug: Debug::new(),
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lod,
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loaded_distance: 0.0,
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map_bounds: Vec2::new(
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client.world_data().min_chunk_alt(),
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client.world_data().max_chunk_alt(),
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),
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select_pos: None,
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light_data: Vec::new(),
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particle_mgr: ParticleMgr::new(renderer),
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figure_mgr: FigureMgr::new(renderer),
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sfx_mgr: SfxMgr::default(),
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music_mgr: MusicMgr::default(),
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ambient_mgr: AmbientMgr::default(),
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}
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}
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/// Get a reference to the scene's globals.
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pub fn globals(&self) -> &Consts<Globals> { &self.data.globals }
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/// Get a reference to the scene's camera.
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pub fn camera(&self) -> &Camera { &self.camera }
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/// Get a reference to the scene's terrain.
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pub fn terrain(&self) -> &Terrain<TerrainChunk> { &self.terrain }
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/// Get a reference to the scene's lights.
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pub fn lights(&self) -> &Vec<Light> { &self.light_data }
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/// Get a reference to the scene's particle manager.
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pub fn particle_mgr(&self) -> &ParticleMgr { &self.particle_mgr }
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/// Get a reference to the scene's figure manager.
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pub fn figure_mgr(&self) -> &FigureMgr { &self.figure_mgr }
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/// Get a mutable reference to the scene's camera.
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pub fn camera_mut(&mut self) -> &mut Camera { &mut self.camera }
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/// Set the block position that the player is interacting with
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pub fn set_select_pos(&mut self, pos: Option<Vec3<i32>>) { self.select_pos = pos; }
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pub fn select_pos(&self) -> Option<Vec3<i32>> { self.select_pos }
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/// Handle an incoming user input event (e.g.: cursor moved, key pressed,
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/// window closed).
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///
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/// If the event is handled, return true.
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pub fn handle_input_event(&mut self, event: Event, client: &Client) -> bool {
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match event {
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// When the window is resized, change the camera's aspect ratio
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Event::Resize(dims) => {
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self.camera.set_aspect_ratio(dims.x as f32 / dims.y as f32);
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true
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},
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// Panning the cursor makes the camera rotate
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Event::CursorPan(delta) => {
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self.camera.rotate_by(Vec3::from(delta) * CURSOR_PAN_SCALE);
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true
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},
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// Zoom the camera when a zoom event occurs
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Event::Zoom(delta) => {
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// when zooming in the distance the camera travelles should be based on the
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// final distance. This is to make sure the camera travelles the
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// same distance when zooming in and out
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let cap = (!client.is_moderator()).then_some(ZOOM_CAP);
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if delta < 0.0 {
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self.camera.zoom_switch(
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// Thank you Imbris for doing the math
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delta * (0.05 + self.camera.get_distance() * 0.01) / (1.0 - delta * 0.01),
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cap,
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);
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} else {
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self.camera
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.zoom_switch(delta * (0.05 + self.camera.get_distance() * 0.01), cap);
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}
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true
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},
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Event::AnalogGameInput(input) => match input {
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AnalogGameInput::CameraX(d) => {
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self.camera_input_state.x = d;
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true
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},
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AnalogGameInput::CameraY(d) => {
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self.camera_input_state.y = d;
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true
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},
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_ => false,
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},
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// All other events are unhandled
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_ => false,
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}
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}
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pub fn handle_outcome(
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&mut self,
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outcome: &Outcome,
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scene_data: &SceneData,
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audio: &mut AudioFrontend,
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) {
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span!(_guard, "handle_outcome", "Scene::handle_outcome");
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self.particle_mgr.handle_outcome(outcome, scene_data);
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self.sfx_mgr
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.handle_outcome(outcome, audio, scene_data.client);
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match outcome {
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Outcome::Explosion {
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pos,
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power,
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is_attack,
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reagent,
|
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..
|
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} => self.event_lights.push(EventLight {
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light: Light::new(
|
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*pos,
|
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match reagent {
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Some(Reagent::Blue) => Rgb::new(0.15, 0.4, 1.0),
|
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Some(Reagent::Green) => Rgb::new(0.0, 1.0, 0.0),
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Some(Reagent::Purple) => Rgb::new(0.7, 0.0, 1.0),
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Some(Reagent::Red) => {
|
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if *is_attack {
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Rgb::new(1.0, 0.5, 0.0)
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} else {
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Rgb::new(1.0, 0.0, 0.0)
|
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}
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},
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Some(Reagent::White) => Rgb::new(1.0, 1.0, 1.0),
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Some(Reagent::Yellow) => Rgb::new(1.0, 1.0, 0.0),
|
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None => Rgb::new(1.0, 0.5, 0.0),
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},
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power
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* if *is_attack || reagent.is_none() {
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2.5
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} else {
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5.0
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},
|
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),
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timeout: match reagent {
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Some(_) => 1.0,
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None => 0.5,
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},
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fadeout: |timeout| timeout * 2.0,
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}),
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Outcome::ProjectileShot { .. } => {},
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_ => {},
|
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}
|
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}
|
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/// Maintain data such as GPU constant buffers, models, etc. To be called
|
||
/// once per tick.
|
||
pub fn maintain(
|
||
&mut self,
|
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renderer: &mut Renderer,
|
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audio: &mut AudioFrontend,
|
||
scene_data: &SceneData,
|
||
client: &Client,
|
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) {
|
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span!(_guard, "maintain", "Scene::maintain");
|
||
// Get player position.
|
||
let ecs = scene_data.state.ecs();
|
||
|
||
let player_pos = ecs
|
||
.read_storage::<comp::Pos>()
|
||
.get(scene_data.player_entity)
|
||
.map_or(Vec3::zero(), |pos| pos.0);
|
||
|
||
let player_rolling = ecs
|
||
.read_storage::<comp::CharacterState>()
|
||
.get(scene_data.player_entity)
|
||
.map_or(false, |cs| cs.is_dodge());
|
||
|
||
let is_running = ecs
|
||
.read_storage::<comp::Vel>()
|
||
.get(scene_data.player_entity)
|
||
.map(|v| v.0.magnitude_squared() > RUNNING_THRESHOLD.powi(2))
|
||
.unwrap_or(false);
|
||
|
||
let on_ground = ecs
|
||
.read_storage::<comp::PhysicsState>()
|
||
.get(scene_data.player_entity)
|
||
.map(|p| p.on_ground.is_some());
|
||
|
||
let (player_height, player_eye_height) = scene_data
|
||
.state
|
||
.ecs()
|
||
.read_storage::<comp::Body>()
|
||
.get(scene_data.player_entity)
|
||
.map_or((1.0, 0.0), |b| (b.height(), b.eye_height()));
|
||
|
||
// Add the analog input to camera
|
||
self.camera
|
||
.rotate_by(Vec3::from([self.camera_input_state.x, 0.0, 0.0]));
|
||
self.camera
|
||
.rotate_by(Vec3::from([0.0, self.camera_input_state.y, 0.0]));
|
||
|
||
// Alter camera position to match player.
|
||
let tilt = self.camera.get_orientation().y;
|
||
let dist = self.camera.get_distance();
|
||
|
||
let up = match self.camera.get_mode() {
|
||
CameraMode::FirstPerson => {
|
||
if player_rolling {
|
||
player_height * 0.42
|
||
} else if is_running && on_ground.unwrap_or(false) {
|
||
player_eye_height + (scene_data.state.get_time() as f32 * 17.0).sin() * 0.05
|
||
} else {
|
||
player_eye_height
|
||
}
|
||
},
|
||
CameraMode::ThirdPerson if scene_data.is_aiming => player_height * 1.16,
|
||
CameraMode::ThirdPerson => player_eye_height,
|
||
CameraMode::Freefly => 0.0,
|
||
};
|
||
|
||
match self.camera.get_mode() {
|
||
CameraMode::FirstPerson | CameraMode::ThirdPerson => {
|
||
self.camera.set_focus_pos(
|
||
player_pos + Vec3::unit_z() * (up - tilt.min(0.0).sin() * dist * 0.6),
|
||
);
|
||
},
|
||
CameraMode::Freefly => {},
|
||
};
|
||
|
||
// Tick camera for interpolation.
|
||
self.camera.update(
|
||
scene_data.state.get_time(),
|
||
scene_data.state.get_delta_time(),
|
||
scene_data.mouse_smoothing,
|
||
);
|
||
|
||
// Compute camera matrices.
|
||
self.camera.compute_dependents(&*scene_data.state.terrain());
|
||
let camera::Dependents {
|
||
view_mat,
|
||
view_mat_inv,
|
||
proj_mat,
|
||
proj_mat_inv,
|
||
cam_pos,
|
||
..
|
||
} = self.camera.dependents();
|
||
|
||
// Update chunk loaded distance smoothly for nice shader fog
|
||
let loaded_distance =
|
||
(0.98 * self.loaded_distance + 0.02 * scene_data.loaded_distance).max(0.01);
|
||
|
||
// Reset lights ready for the next tick
|
||
let lights = &mut self.light_data;
|
||
lights.clear();
|
||
|
||
// Maintain the particles.
|
||
self.particle_mgr
|
||
.maintain(renderer, scene_data, &self.terrain, lights);
|
||
|
||
// Update light constants
|
||
lights.extend(
|
||
(
|
||
&scene_data.state.ecs().read_storage::<comp::Pos>(),
|
||
scene_data
|
||
.state
|
||
.ecs()
|
||
.read_storage::<crate::ecs::comp::Interpolated>()
|
||
.maybe(),
|
||
&scene_data
|
||
.state
|
||
.ecs()
|
||
.read_storage::<comp::LightAnimation>(),
|
||
&scene_data.state.ecs().read_storage::<comp::Health>(),
|
||
)
|
||
.join()
|
||
.filter(|(pos, _, light_anim, h)| {
|
||
light_anim.col != Rgb::zero()
|
||
&& light_anim.strength > 0.0
|
||
&& (pos.0.distance_squared(player_pos) as f32)
|
||
< loaded_distance.powi(2) + LIGHT_DIST_RADIUS
|
||
&& !h.is_dead
|
||
})
|
||
.map(|(pos, interpolated, light_anim, _)| {
|
||
// Use interpolated values if they are available
|
||
let pos = interpolated.map_or(pos.0, |i| i.pos);
|
||
Light::new(pos + light_anim.offset, light_anim.col, light_anim.strength)
|
||
})
|
||
.chain(
|
||
self.event_lights
|
||
.iter()
|
||
.map(|el| el.light.with_strength((el.fadeout)(el.timeout))),
|
||
),
|
||
);
|
||
lights.sort_by_key(|light| light.get_pos().distance_squared(player_pos) as i32);
|
||
lights.truncate(MAX_LIGHT_COUNT);
|
||
renderer.update_consts(&mut self.data.lights, lights);
|
||
|
||
// Update event lights
|
||
let dt = ecs.fetch::<DeltaTime>().0;
|
||
self.event_lights.drain_filter(|el| {
|
||
el.timeout -= dt;
|
||
el.timeout <= 0.0
|
||
});
|
||
|
||
// Update shadow constants
|
||
let mut shadows = (
|
||
&scene_data.state.ecs().read_storage::<comp::Pos>(),
|
||
scene_data
|
||
.state
|
||
.ecs()
|
||
.read_storage::<crate::ecs::comp::Interpolated>()
|
||
.maybe(),
|
||
scene_data.state.ecs().read_storage::<comp::Scale>().maybe(),
|
||
&scene_data.state.ecs().read_storage::<comp::Body>(),
|
||
&scene_data.state.ecs().read_storage::<comp::Health>(),
|
||
)
|
||
.join()
|
||
.filter(|(_, _, _, _, health)| !health.is_dead)
|
||
.filter(|(pos, _, _, _, _)| {
|
||
(pos.0.distance_squared(player_pos) as f32)
|
||
< (loaded_distance.min(SHADOW_MAX_DIST) + SHADOW_DIST_RADIUS).powi(2)
|
||
})
|
||
.map(|(pos, interpolated, scale, _, _)| {
|
||
Shadow::new(
|
||
// Use interpolated values pos if it is available
|
||
interpolated.map_or(pos.0, |i| i.pos),
|
||
scale.map_or(1.0, |s| s.0),
|
||
)
|
||
})
|
||
.collect::<Vec<_>>();
|
||
shadows.sort_by_key(|shadow| shadow.get_pos().distance_squared(player_pos) as i32);
|
||
shadows.truncate(MAX_SHADOW_COUNT);
|
||
renderer.update_consts(&mut self.data.shadows, &shadows);
|
||
|
||
// Remember to put the new loaded distance back in the scene.
|
||
self.loaded_distance = loaded_distance;
|
||
|
||
// Update light projection matrices for the shadow map.
|
||
let time_of_day = scene_data.state.get_time_of_day();
|
||
let focus_pos = self.camera.get_focus_pos();
|
||
let focus_off = focus_pos.map(|e| e.trunc());
|
||
|
||
// Update global constants.
|
||
renderer.update_consts(&mut self.data.globals, &[Globals::new(
|
||
view_mat,
|
||
proj_mat,
|
||
cam_pos,
|
||
focus_pos,
|
||
self.loaded_distance,
|
||
self.lod.get_data().tgt_detail as f32,
|
||
self.map_bounds,
|
||
time_of_day,
|
||
scene_data.state.get_time(),
|
||
renderer.resolution().as_(),
|
||
Vec2::new(SHADOW_NEAR, SHADOW_FAR),
|
||
lights.len(),
|
||
shadows.len(),
|
||
NUM_DIRECTED_LIGHTS,
|
||
scene_data
|
||
.state
|
||
.terrain()
|
||
.get((cam_pos + focus_off).map(|e| e.floor() as i32))
|
||
.ok()
|
||
// Don't block the camera's view in solid blocks if the player is a moderator
|
||
.filter(|b| !(b.is_filled() && client.is_moderator()))
|
||
.map(|b| b.kind())
|
||
.unwrap_or(BlockKind::Air),
|
||
self.select_pos.map(|e| e - focus_off.map(|e| e as i32)),
|
||
scene_data.gamma,
|
||
scene_data.exposure,
|
||
scene_data.ambiance,
|
||
self.camera.get_mode(),
|
||
scene_data.sprite_render_distance as f32 - 20.0,
|
||
)]);
|
||
renderer.update_clouds_locals(CloudsLocals::new(proj_mat_inv, view_mat_inv));
|
||
renderer.update_postprocess_locals(PostProcessLocals::new(proj_mat_inv, view_mat_inv));
|
||
|
||
// Maintain LoD.
|
||
self.lod.maintain(renderer);
|
||
|
||
// Maintain debug shapes
|
||
self.debug.maintain(renderer);
|
||
|
||
// Maintain the terrain.
|
||
let (_visible_bounds, visible_light_volume, visible_psr_bounds) = self.terrain.maintain(
|
||
renderer,
|
||
scene_data,
|
||
focus_pos,
|
||
self.loaded_distance,
|
||
&self.camera,
|
||
);
|
||
|
||
// Maintain the figures.
|
||
let _figure_bounds = self.figure_mgr.maintain(
|
||
renderer,
|
||
scene_data,
|
||
visible_psr_bounds,
|
||
&self.camera,
|
||
Some(&self.terrain),
|
||
);
|
||
|
||
let sun_dir = scene_data.get_sun_dir();
|
||
let is_daylight = sun_dir.z < 0.0;
|
||
if renderer.pipeline_modes().shadow.is_map() && (is_daylight || !lights.is_empty()) {
|
||
let fov = self.camera.get_effective_fov();
|
||
let aspect_ratio = self.camera.get_aspect_ratio();
|
||
|
||
let view_dir = ((focus_pos.map(f32::fract)) - cam_pos).normalized();
|
||
let (point_shadow_res, _directed_shadow_res) = renderer.get_shadow_resolution();
|
||
// NOTE: The aspect ratio is currently always 1 for our cube maps, since they
|
||
// are equal on all sides.
|
||
let point_shadow_aspect = point_shadow_res.x as f32 / point_shadow_res.y as f32;
|
||
// Construct matrices to transform from world space to light space for the sun
|
||
// and moon.
|
||
let directed_light_dir = math::Vec3::from(sun_dir);
|
||
|
||
// Optimal warping for directed lights:
|
||
//
|
||
// n_opt = 1 / sin y (z_n + √(z_n + (f - n) sin y))
|
||
//
|
||
// where n is near plane, f is far plane, y is the tilt angle between view and
|
||
// light direction, and n_opt is the optimal near plane.
|
||
// We also want a way to transform and scale this matrix (* 0.5 + 0.5) in order
|
||
// to transform it correctly into texture coordinates, as well as
|
||
// OpenGL coordinates. Note that the matrix for directional light
|
||
// is *already* linear in the depth buffer.
|
||
//
|
||
// Also, observe that we flip the texture sampling matrix in order to account
|
||
// for the fact that DirectX renders top-down.
|
||
let texture_mat = Mat4::<f32>::scaling_3d::<Vec3<f32>>(Vec3::new(0.5, -0.5, 1.0))
|
||
* Mat4::translation_3d(Vec3::new(1.0, -1.0, 0.0));
|
||
// We need to compute these offset matrices to transform world space coordinates
|
||
// to the translated ones we use when multiplying by the light space
|
||
// matrix; this helps avoid precision loss during the
|
||
// multiplication.
|
||
let look_at = math::Vec3::from(cam_pos);
|
||
// We upload view matrices as well, to assist in linearizing vertex positions.
|
||
// (only for directional lights, so far).
|
||
let mut directed_shadow_mats = Vec::with_capacity(6);
|
||
let new_dir = math::Vec3::from(view_dir);
|
||
let new_dir = new_dir.normalized();
|
||
let up: math::Vec3<f32> = math::Vec3::unit_y();
|
||
let light_view_mat = math::Mat4::look_at_rh(look_at, look_at + directed_light_dir, up);
|
||
{
|
||
// NOTE: Light view space, right-handed.
|
||
let v_p_orig =
|
||
math::Vec3::from(light_view_mat * math::Vec4::from_direction(new_dir));
|
||
let mut v_p = v_p_orig.normalized();
|
||
let cos_gamma = new_dir
|
||
.map(f64::from)
|
||
.dot(directed_light_dir.map(f64::from));
|
||
let sin_gamma = (1.0 - cos_gamma * cos_gamma).sqrt();
|
||
let gamma = sin_gamma.asin();
|
||
let view_mat = math::Mat4::from_col_array(view_mat.into_col_array());
|
||
// coordinates are transformed from world space (right-handed) to view space
|
||
// (right-handed).
|
||
let bounds1 = math::fit_psr(
|
||
view_mat.map_cols(math::Vec4::from),
|
||
visible_light_volume.iter().copied(),
|
||
math::Vec4::homogenized,
|
||
);
|
||
let n_e = f64::from(-bounds1.max.z);
|
||
let factor = compute_warping_parameter_perspective(
|
||
gamma,
|
||
n_e,
|
||
f64::from(fov),
|
||
f64::from(aspect_ratio),
|
||
);
|
||
|
||
v_p.z = 0.0;
|
||
v_p.normalize();
|
||
let l_r: math::Mat4<f32> = if factor > EPSILON_UPSILON {
|
||
// NOTE: Our coordinates are now in left-handed space, but v_p isn't; however,
|
||
// v_p has no z component, so we don't have to adjust it for left-handed
|
||
// spaces.
|
||
math::Mat4::look_at_lh(math::Vec3::zero(), math::Vec3::unit_z(), v_p)
|
||
} else {
|
||
math::Mat4::identity()
|
||
};
|
||
// Convert from right-handed to left-handed coordinates.
|
||
let directed_proj_mat = math::Mat4::new(
|
||
1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, -1.0, 0.0, 0.0, 0.0, 0.0, 1.0,
|
||
);
|
||
|
||
let light_all_mat = l_r * directed_proj_mat * light_view_mat;
|
||
// coordinates are transformed from world space (right-handed) to rotated light
|
||
// space (left-handed).
|
||
let bounds0 = math::fit_psr(
|
||
light_all_mat,
|
||
visible_light_volume.iter().copied(),
|
||
math::Vec4::homogenized,
|
||
);
|
||
// Vague idea: project z_n from the camera view to the light view (where it's
|
||
// tilted by γ).
|
||
//
|
||
// NOTE: To transform a normal by M, we multiply by the transpose of the inverse
|
||
// of M. For the cases below, we are transforming by an
|
||
// already-inverted matrix, so the transpose of its inverse is
|
||
// just the transpose of the original matrix.
|
||
let (z_0, z_1) = {
|
||
let f_e = f64::from(-bounds1.min.z).max(n_e);
|
||
// view space, right-handed coordinates.
|
||
let p_z = bounds1.max.z;
|
||
// rotated light space, left-handed coordinates.
|
||
let p_y = bounds0.min.y;
|
||
let p_x = bounds0.center().x;
|
||
// moves from view-space (right-handed) to world space (right-handed)
|
||
let view_inv = view_mat.inverted();
|
||
// moves from rotated light space (left-handed) to world space (right-handed).
|
||
let light_all_inv = light_all_mat.inverted();
|
||
|
||
// moves from view-space (right-handed) to world-space (right-handed).
|
||
let view_point = view_inv
|
||
* math::Vec4::from_point(
|
||
-math::Vec3::unit_z() * p_z, /* + math::Vec4::unit_w() */
|
||
);
|
||
let view_plane = view_mat.transposed() * -math::Vec4::unit_z();
|
||
|
||
// moves from rotated light space (left-handed) to world space (right-handed).
|
||
let light_point = light_all_inv
|
||
* math::Vec4::from_point(
|
||
math::Vec3::unit_y() * p_y, /* + math::Vec4::unit_w() */
|
||
);
|
||
let light_plane = light_all_mat.transposed() * math::Vec4::unit_y();
|
||
|
||
// moves from rotated light space (left-handed) to world space (right-handed).
|
||
let shadow_point = light_all_inv
|
||
* math::Vec4::from_point(
|
||
math::Vec3::unit_x() * p_x, /* + math::Vec4::unit_w() */
|
||
);
|
||
let shadow_plane = light_all_mat.transposed() * math::Vec4::unit_x();
|
||
|
||
// Find the point at the intersection of the three planes; note that since the
|
||
// equations are already in right-handed world space, we don't need to negate
|
||
// the z coordinates.
|
||
let solve_p0 = math::Mat4::new(
|
||
view_plane.x,
|
||
view_plane.y,
|
||
view_plane.z,
|
||
0.0,
|
||
light_plane.x,
|
||
light_plane.y,
|
||
light_plane.z,
|
||
0.0,
|
||
shadow_plane.x,
|
||
shadow_plane.y,
|
||
shadow_plane.z,
|
||
0.0,
|
||
0.0,
|
||
0.0,
|
||
0.0,
|
||
1.0,
|
||
);
|
||
|
||
// in world-space (right-handed).
|
||
let plane_dist = math::Vec4::new(
|
||
view_plane.dot(view_point),
|
||
light_plane.dot(light_point),
|
||
shadow_plane.dot(shadow_point),
|
||
1.0,
|
||
);
|
||
let p0_world = solve_p0.inverted() * plane_dist;
|
||
// in rotated light-space (left-handed).
|
||
let p0 = light_all_mat * p0_world;
|
||
let mut p1 = p0;
|
||
// in rotated light-space (left-handed).
|
||
p1.y = bounds0.max.y;
|
||
|
||
// transforms from rotated light-space (left-handed) to view space
|
||
// (right-handed).
|
||
let view_from_light_mat = view_mat * light_all_inv;
|
||
// z0 and z1 are in view space (right-handed).
|
||
let z0 = view_from_light_mat * p0;
|
||
let z1 = view_from_light_mat * p1;
|
||
|
||
// Extract the homogenized forward component (right-handed).
|
||
//
|
||
// NOTE: I don't think the w component should be anything but 1 here, but
|
||
// better safe than sorry.
|
||
(
|
||
f64::from(z0.homogenized().dot(-math::Vec4::unit_z())).clamp(n_e, f_e),
|
||
f64::from(z1.homogenized().dot(-math::Vec4::unit_z())).clamp(n_e, f_e),
|
||
)
|
||
};
|
||
|
||
// all of this is in rotated light-space (left-handed).
|
||
let mut light_focus_pos: math::Vec3<f32> = math::Vec3::zero();
|
||
light_focus_pos.x = bounds0.center().x;
|
||
light_focus_pos.y = bounds0.min.y;
|
||
light_focus_pos.z = bounds0.center().z;
|
||
|
||
let d = f64::from(bounds0.max.y - bounds0.min.y).abs();
|
||
|
||
let w_l_y = d;
|
||
|
||
// NOTE: See section 5.1.2.2 of Lloyd's thesis.
|
||
// NOTE: Since z_1 and z_0 are in the same coordinate space, we don't have to
|
||
// worry about the handedness of their ratio.
|
||
let alpha = z_1 / z_0;
|
||
let alpha_sqrt = alpha.sqrt();
|
||
let directed_near_normal = if factor < 0.0 {
|
||
// Standard shadow map to LiSPSM
|
||
(1.0 + alpha_sqrt - factor * (alpha - 1.0)) / ((alpha - 1.0) * (factor + 1.0))
|
||
} else {
|
||
// LiSPSM to PSM
|
||
((alpha_sqrt - 1.0) * (factor * alpha_sqrt + 1.0)).recip()
|
||
};
|
||
|
||
// Equation 5.14 - 5.16
|
||
let y_ = |v: f64| w_l_y * (v + directed_near_normal).abs();
|
||
let directed_near = y_(0.0) as f32;
|
||
let directed_far = y_(1.0) as f32;
|
||
light_focus_pos.y = if factor > EPSILON_UPSILON {
|
||
light_focus_pos.y - directed_near
|
||
} else {
|
||
light_focus_pos.y
|
||
};
|
||
// Left-handed translation.
|
||
let w_v: math::Mat4<f32> = math::Mat4::translation_3d(-math::Vec3::new(
|
||
light_focus_pos.x,
|
||
light_focus_pos.y,
|
||
light_focus_pos.z,
|
||
));
|
||
let shadow_view_mat: math::Mat4<f32> = w_v * light_all_mat;
|
||
let w_p: math::Mat4<f32> = {
|
||
if factor > EPSILON_UPSILON {
|
||
// Projection for y
|
||
let near = directed_near;
|
||
let far = directed_far;
|
||
let left = -1.0;
|
||
let right = 1.0;
|
||
let bottom = -1.0;
|
||
let top = 1.0;
|
||
let s_x = 2.0 * near / (right - left);
|
||
let o_x = (right + left) / (right - left);
|
||
let s_z = 2.0 * near / (top - bottom);
|
||
let o_z = (top + bottom) / (top - bottom);
|
||
|
||
let s_y = (far + near) / (far - near);
|
||
let o_y = -2.0 * far * near / (far - near);
|
||
|
||
math::Mat4::new(
|
||
s_x, o_x, 0.0, 0.0, 0.0, s_y, 0.0, o_y, 0.0, o_z, s_z, 0.0, 0.0, 1.0,
|
||
0.0, 0.0,
|
||
)
|
||
} else {
|
||
math::Mat4::identity()
|
||
}
|
||
};
|
||
|
||
let shadow_all_mat: math::Mat4<f32> = w_p * shadow_view_mat;
|
||
// coordinates are transformed from world space (right-handed)
|
||
// to post-warp light space (left-handed), then homogenized.
|
||
let math::Aabb::<f32> {
|
||
min:
|
||
math::Vec3 {
|
||
x: xmin,
|
||
y: ymin,
|
||
z: zmin,
|
||
},
|
||
max:
|
||
math::Vec3 {
|
||
x: xmax,
|
||
y: ymax,
|
||
z: zmax,
|
||
},
|
||
} = math::fit_psr(
|
||
shadow_all_mat,
|
||
visible_light_volume.iter().copied(),
|
||
math::Vec4::homogenized,
|
||
);
|
||
let s_x = 2.0 / (xmax - xmin);
|
||
let s_y = 2.0 / (ymax - ymin);
|
||
let s_z = 1.0 / (zmax - zmin);
|
||
let o_x = -(xmax + xmin) / (xmax - xmin);
|
||
let o_y = -(ymax + ymin) / (ymax - ymin);
|
||
let o_z = -zmin / (zmax - zmin);
|
||
let directed_proj_mat = Mat4::new(
|
||
s_x, 0.0, 0.0, o_x, 0.0, s_y, 0.0, o_y, 0.0, 0.0, s_z, o_z, 0.0, 0.0, 0.0, 1.0,
|
||
);
|
||
|
||
let shadow_all_mat: Mat4<f32> =
|
||
Mat4::from_col_arrays(shadow_all_mat.into_col_arrays());
|
||
|
||
let directed_texture_proj_mat = texture_mat * directed_proj_mat;
|
||
let shadow_locals = ShadowLocals::new(
|
||
directed_proj_mat * shadow_all_mat,
|
||
directed_texture_proj_mat * shadow_all_mat,
|
||
);
|
||
|
||
renderer.update_consts(&mut self.data.shadow_mats, &[shadow_locals]);
|
||
}
|
||
directed_shadow_mats.push(light_view_mat);
|
||
// This leaves us with five dummy slots, which we push as defaults.
|
||
directed_shadow_mats
|
||
.extend_from_slice(&[math::Mat4::default(); 6 - NUM_DIRECTED_LIGHTS] as _);
|
||
// Now, construct the full projection matrices in the first two directed light
|
||
// slots.
|
||
let mut shadow_mats = Vec::with_capacity(6 * (lights.len() + 1));
|
||
shadow_mats.resize_with(6, PointLightMatrix::default);
|
||
// Now, we tackle point lights.
|
||
// First, create a perspective projection matrix at 90 degrees (to cover a whole
|
||
// face of the cube map we're using); we use a negative near plane to exactly
|
||
// match OpenGL's behavior if we use a left-handed coordinate system everywhere
|
||
// else.
|
||
let shadow_proj = camera::perspective_rh_zo_general(
|
||
90.0f32.to_radians(),
|
||
point_shadow_aspect,
|
||
1.0 / SHADOW_NEAR,
|
||
1.0 / SHADOW_FAR,
|
||
);
|
||
// NOTE: We negate here to emulate a right-handed projection with a negative
|
||
// near plane, which produces the correct transformation to exactly match
|
||
// OpenGL's rendering behavior if we use a left-handed coordinate
|
||
// system everywhere else.
|
||
let shadow_proj = shadow_proj * Mat4::scaling_3d(-1.0);
|
||
|
||
// Next, construct the 6 orientations we'll use for the six faces, in terms of
|
||
// their (forward, up) vectors.
|
||
let orientations = [
|
||
(Vec3::new(1.0, 0.0, 0.0), Vec3::new(0.0, -1.0, 0.0)),
|
||
(Vec3::new(-1.0, 0.0, 0.0), Vec3::new(0.0, -1.0, 0.0)),
|
||
(Vec3::new(0.0, 1.0, 0.0), Vec3::new(0.0, 0.0, 1.0)),
|
||
(Vec3::new(0.0, -1.0, 0.0), Vec3::new(0.0, 0.0, -1.0)),
|
||
(Vec3::new(0.0, 0.0, 1.0), Vec3::new(0.0, -1.0, 0.0)),
|
||
(Vec3::new(0.0, 0.0, -1.0), Vec3::new(0.0, -1.0, 0.0)),
|
||
];
|
||
|
||
// NOTE: We could create the shadow map collection at the same time as the
|
||
// lights, but then we'd have to sort them both, which wastes time. Plus, we
|
||
// want to prepend our directed lights.
|
||
shadow_mats.extend(lights.iter().flat_map(|light| {
|
||
// Now, construct the full projection matrix by making the light look at each
|
||
// cube face.
|
||
let eye = Vec3::new(light.pos[0], light.pos[1], light.pos[2]) - focus_off;
|
||
orientations.iter().map(move |&(forward, up)| {
|
||
// NOTE: We don't currently try to linearize point lights or need a separate
|
||
// transform for them.
|
||
PointLightMatrix::new(shadow_proj * Mat4::look_at_lh(eye, eye + forward, up))
|
||
})
|
||
}));
|
||
|
||
for (i, val) in shadow_mats.into_iter().enumerate() {
|
||
self.data.point_light_matrices[i] = val
|
||
}
|
||
}
|
||
|
||
// Remove unused figures.
|
||
self.figure_mgr.clean(scene_data.tick);
|
||
|
||
// Maintain audio
|
||
self.sfx_mgr.maintain(
|
||
audio,
|
||
scene_data.state,
|
||
scene_data.player_entity,
|
||
&self.camera,
|
||
&self.terrain,
|
||
client,
|
||
);
|
||
self.music_mgr.maintain(audio, scene_data.state, client);
|
||
self.ambient_mgr
|
||
.maintain(audio, scene_data.state, client, &self.camera);
|
||
}
|
||
|
||
pub fn global_bind_group(&self) -> &GlobalsBindGroup { &self.globals_bind_group }
|
||
|
||
/// Render the scene using the provided `Drawer`.
|
||
pub fn render<'a>(
|
||
&'a self,
|
||
drawer: &mut Drawer<'a>,
|
||
state: &State,
|
||
player_entity: EcsEntity,
|
||
tick: u64,
|
||
scene_data: &SceneData,
|
||
) {
|
||
span!(_guard, "render", "Scene::render");
|
||
let sun_dir = scene_data.get_sun_dir();
|
||
let is_daylight = sun_dir.z < 0.0;
|
||
let focus_pos = self.camera.get_focus_pos();
|
||
let cam_pos = self.camera.dependents().cam_pos + focus_pos.map(|e| e.trunc());
|
||
|
||
let camera_data = (&self.camera, scene_data.figure_lod_render_distance);
|
||
|
||
// would instead have this as an extension.
|
||
if drawer.pipeline_modes().shadow.is_map() && (is_daylight || !self.light_data.is_empty()) {
|
||
if is_daylight {
|
||
prof_span!("directed shadows");
|
||
if let Some(mut shadow_pass) = drawer.shadow_pass() {
|
||
// Render terrain directed shadows.
|
||
self.terrain
|
||
.render_shadows(&mut shadow_pass.draw_terrain_shadows(), focus_pos);
|
||
|
||
// Render figure directed shadows.
|
||
self.figure_mgr.render_shadows(
|
||
&mut shadow_pass.draw_figure_shadows(),
|
||
state,
|
||
tick,
|
||
camera_data,
|
||
);
|
||
}
|
||
}
|
||
|
||
// Render terrain point light shadows.
|
||
{
|
||
prof_span!("point shadows");
|
||
drawer.draw_point_shadows(
|
||
&self.data.point_light_matrices,
|
||
self.terrain.chunks_for_point_shadows(focus_pos),
|
||
)
|
||
}
|
||
}
|
||
|
||
prof_span!(guard, "main pass");
|
||
if let Some(mut first_pass) = drawer.first_pass() {
|
||
self.figure_mgr.render_player(
|
||
&mut first_pass.draw_figures(),
|
||
state,
|
||
player_entity,
|
||
tick,
|
||
camera_data,
|
||
);
|
||
|
||
self.terrain.render(&mut first_pass, focus_pos);
|
||
|
||
self.figure_mgr.render(
|
||
&mut first_pass.draw_figures(),
|
||
state,
|
||
player_entity,
|
||
tick,
|
||
camera_data,
|
||
);
|
||
|
||
self.lod.render(&mut first_pass);
|
||
|
||
// Render the skybox.
|
||
first_pass.draw_skybox(&self.skybox.model);
|
||
|
||
// Draws translucent terrain and sprites
|
||
self.terrain.render_translucent(
|
||
&mut first_pass,
|
||
focus_pos,
|
||
cam_pos,
|
||
scene_data.sprite_render_distance,
|
||
);
|
||
|
||
// Render particle effects.
|
||
self.particle_mgr
|
||
.render(&mut first_pass.draw_particles(), scene_data);
|
||
|
||
// Render debug shapes
|
||
self.debug.render(&mut first_pass.draw_debug());
|
||
}
|
||
drop(guard);
|
||
}
|
||
|
||
pub fn maintain_debug_hitboxes(
|
||
&mut self,
|
||
client: &Client,
|
||
settings: &Settings,
|
||
hitboxes: &mut HashMap<specs::Entity, DebugShapeId>,
|
||
) {
|
||
let ecs = client.state().ecs();
|
||
let mut current_entities = hashbrown::HashSet::new();
|
||
if settings.interface.toggle_hitboxes {
|
||
let positions = ecs.read_component::<comp::Pos>();
|
||
let colliders = ecs.read_component::<comp::Collider>();
|
||
let orientations = ecs.read_component::<comp::Ori>();
|
||
let groups = ecs.read_component::<comp::Group>();
|
||
for (entity, pos, collider, ori, group) in (
|
||
&ecs.entities(),
|
||
&positions,
|
||
&colliders,
|
||
&orientations,
|
||
groups.maybe(),
|
||
)
|
||
.join()
|
||
{
|
||
match collider {
|
||
comp::Collider::CapsulePrism {
|
||
p0,
|
||
p1,
|
||
radius,
|
||
z_min,
|
||
z_max,
|
||
} => {
|
||
current_entities.insert(entity);
|
||
let shape_id = hitboxes.entry(entity).or_insert_with(|| {
|
||
self.debug.add_shape(DebugShape::CapsulePrism {
|
||
p0: *p0,
|
||
p1: *p1,
|
||
radius: *radius,
|
||
height: *z_max - *z_min,
|
||
})
|
||
});
|
||
let hb_pos = [pos.0.x, pos.0.y, pos.0.z + *z_min, 0.0];
|
||
let color = if group == Some(&comp::group::ENEMY) {
|
||
[1.0, 0.0, 0.0, 0.5]
|
||
} else if group == Some(&comp::group::NPC) {
|
||
[0.0, 0.0, 1.0, 0.5]
|
||
} else {
|
||
[0.0, 1.0, 0.0, 0.5]
|
||
};
|
||
let ori = ori.to_quat();
|
||
let hb_ori = [ori.x, ori.y, ori.z, ori.w];
|
||
self.debug.set_context(*shape_id, hb_pos, color, hb_ori);
|
||
},
|
||
comp::Collider::Voxel { .. } | comp::Collider::Point => {
|
||
// ignore terrain-like or point-hitboxes
|
||
},
|
||
}
|
||
}
|
||
}
|
||
hitboxes.retain(|k, v| {
|
||
let keep = current_entities.contains(k);
|
||
if !keep {
|
||
self.debug.remove_shape(*v);
|
||
}
|
||
keep
|
||
});
|
||
}
|
||
}
|