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58 lines
1.6 KiB
58 lines
1.6 KiB
use bytemuck::__core::ops::Range;
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use bytemuck::{Zeroable, Pod};
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use cgmath::Point3;
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use std::sync::Arc;
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use wgpu::TextureView;
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use crate::components::{RangeCopy, Position};
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use crate::render::OPENGL_TO_WGPU_MATRIX;
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#[repr(C)]
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#[derive(Clone, Copy)]
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pub struct LightRaw {
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proj: [[f32; 4]; 4],
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pos: [f32; 4],
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color: [f32; 4],
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}
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unsafe impl Pod for LightRaw {}
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unsafe impl Zeroable for LightRaw {}
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#[derive(Clone, Debug)]
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pub struct DirectionalLight {
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pub color: wgpu::Color,
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pub fov: f32,
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pub depth: RangeCopy<f32>,
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pub target_view: Arc<TextureView>,
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}
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impl DirectionalLight {
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pub fn to_raw(&self, pos: &Position) -> LightRaw {
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use cgmath::{Deg, EuclideanSpace, Matrix4, PerspectiveFov, Point3, Vector3};
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let point3d = Point3::new(pos.x, pos.y, pos.z);
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let point3d_2 = Point3::new(pos.x, pos.y - 1.0, pos.z);
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let mx_view = Matrix4::look_at(point3d, point3d_2, Vector3::unit_z());
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let projection = PerspectiveFov {
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fovy: Deg(self.fov).into(),
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aspect: 1.0,
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near: self.depth.start,
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far: self.depth.end,
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};
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let mx_correction = OPENGL_TO_WGPU_MATRIX;
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let mx_view_proj =
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mx_correction * cgmath::Matrix4::from(projection.to_perspective()) * mx_view;
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LightRaw {
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proj: *mx_view_proj.as_ref(),
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pos: [pos.x, pos.y, pos.z, 1.0],
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color: [
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self.color.r as f32,
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self.color.g as f32,
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self.color.b as f32,
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1.0,
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],
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}
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}
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} |