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Resize support for gfx-cube and framework

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This commit is contained in:
Dzmitry Malyshau 2019-02-21 14:14:42 -05:00
parent 14ee80f463
commit 59fe349633
2 changed files with 29 additions and 15 deletions
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36
gfx-examples/src/cube.rs
View File

@ -88,9 +88,22 @@ struct Cube {
index_buf: wgpu::Buffer,
index_count: usize,
bind_group: wgpu::BindGroup,
uniform_buf: wgpu::Buffer,
pipeline: wgpu::RenderPipeline,
}
impl Cube {
fn generate_matrix(aspect_ratio: f32) -> cgmath::Matrix4<f32> {
let mx_projection = cgmath::perspective(cgmath::Deg(45f32), aspect_ratio, 1.0, 10.0);
let mx_view = cgmath::Matrix4::look_at(
cgmath::Point3::new(1.5f32, -5.0, 3.0),
cgmath::Point3::new(0f32, 0.0, 0.0),
cgmath::Vector3::unit_z(),
);
mx_projection * mx_view
}
}
impl framework::Example for Cube {
fn init(device: &mut wgpu::Device, sc_desc: &wgpu::SwapChainDescriptor) -> Self {
use std::mem;
@ -196,18 +209,9 @@ impl framework::Example for Cube {
size: 64,
usage: wgpu::BufferUsageFlags::UNIFORM | wgpu::BufferUsageFlags::TRANSFER_DST,
});
{
let aspect_ratio = sc_desc.width as f32 / sc_desc.height as f32;
let mx_projection = cgmath::perspective(cgmath::Deg(45f32), aspect_ratio, 1.0, 10.0);
let mx_view = cgmath::Matrix4::look_at(
cgmath::Point3::new(1.5f32, -5.0, 3.0),
cgmath::Point3::new(0f32, 0.0, 0.0),
cgmath::Vector3::unit_z(),
);
let mx_total = mx_projection * mx_view;
let mx_raw: &[f32; 16] = mx_total.as_ref();
uniform_buf.set_sub_data(0, framework::cast_slice(&mx_raw[..]));
}
let mx_total = Self::generate_matrix(sc_desc.width as f32 / sc_desc.height as f32);
let mx_ref: &[f32; 16] = mx_total.as_ref();
uniform_buf.set_sub_data(0, framework::cast_slice(&mx_ref[..]));
// Create bind group
let bind_group = device.create_bind_group(&wgpu::BindGroupDescriptor {
@ -294,11 +298,17 @@ impl framework::Example for Cube {
index_buf,
index_count: index_data.len(),
bind_group,
uniform_buf,
pipeline,
}
}
fn update(&mut self, _event: wgpu::winit::WindowEvent) {
fn update(&mut self, event: wgpu::winit::WindowEvent) {
if let wgpu::winit::WindowEvent::Resized(size) = event {
let mx_total = Self::generate_matrix(size.width as f32 / size.height as f32);
let mx_ref: &[f32; 16] = mx_total.as_ref();
self.uniform_buf.set_sub_data(0, framework::cast_slice(&mx_ref[..]));
}
}
fn render(&mut self, frame: &wgpu::SwapChainOutput, device: &mut wgpu::Device) {

8
gfx-examples/src/framework.rs
View File

@ -70,7 +70,7 @@ pub fn run<E: Example>(title: &str) {
.to_physical(window.get_hidpi_factor());
let surface = instance.create_surface(&window);
let sc_desc = wgpu::SwapChainDescriptor {
let mut sc_desc = wgpu::SwapChainDescriptor {
usage: wgpu::TextureUsageFlags::OUTPUT_ATTACHMENT,
format: wgpu::TextureFormat::B8g8r8a8Unorm,
width: size.width as u32,
@ -91,7 +91,11 @@ pub fn run<E: Example>(title: &str) {
..
} => {
let physical = size.to_physical(window.get_hidpi_factor());
info!("Resized to {:?}", physical);
info!("Resizing to {:?}", physical);
sc_desc.width = physical.width as u32;
sc_desc.height = physical.height as u32;
swap_chain = device.create_swap_chain(&surface, &sc_desc);
example.update(WindowEvent::Resized(size));
}
Event::WindowEvent { event, .. } => match event {
WindowEvent::KeyboardInput {