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use slope fov

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This commit is contained in:
Quaternions 2023-08-31 22:47:55 -07:00
parent 7c247b6949
commit e25a2d7a7a
1 changed files with 16 additions and 2 deletions
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18
src/main.rs
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@ -1,5 +1,5 @@
use bytemuck::{Pod, Zeroable};
use std::{borrow::Cow, f32::consts,time::Instant};
use std::{borrow::Cow, time::Instant};
use wgpu::{util::DeviceExt, AstcBlock, AstcChannel};
const IMAGE_SIZE: u32 = 128;
@ -25,6 +25,7 @@ struct Camera {
friction: f32,
screen_size: (u32, u32),
offset: glam::Vec3,
fov: f32,
yaw: f32,
pitch: f32,
controls: u32,
@ -70,10 +71,22 @@ fn get_control_dir(controls: u32) -> glam::Vec3{
return control_dir
}
#[inline]
fn perspective_rh(fov_y_slope: f32, aspect_ratio: f32, z_near: f32, z_far: f32) -> glam::Mat4 {
//glam_assert!(z_near > 0.0 && z_far > 0.0);
let r = z_far / (z_near - z_far);
glam::Mat4::from_cols(
glam::Vec4::new(1.0/(fov_y_slope * aspect_ratio), 0.0, 0.0, 0.0),
glam::Vec4::new(0.0, 1.0/fov_y_slope, 0.0, 0.0),
glam::Vec4::new(0.0, 0.0, r, -1.0),
glam::Vec4::new(0.0, 0.0, r * z_near, 0.0),
)
}
impl Camera {
fn to_uniform_data(&self) -> [f32; 16 * 3 + 4] {
let aspect = self.screen_size.0 as f32 / self.screen_size.1 as f32;
let proj = glam::Mat4::perspective_rh(consts::FRAC_PI_2, aspect, 1.0, 200.0);
let proj = perspective_rh(self.fov, aspect, 1.0, 200.0);
let view = (glam::Mat4::from_translation(self.pos+self.offset) * glam::Mat4::from_euler(glam::EulerRot::YXZ, self.yaw, self.pitch, 0f32)).inverse();
let proj_inv = proj.inverse();
@ -217,6 +230,7 @@ impl strafe_client::framework::Example for Skybox {
friction: 90.0,
screen_size: (config.width, config.height),
offset: glam::Vec3::new(0.0,4.5,0.0),
fov: 1.0, //fov_slope = tan(fov_y/2)
pitch: 0.0,
yaw: 0.0,
mv: 2.7,