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Try to draw multiple rectangles

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This commit is contained in:
Bob Shelline 2020-11-04 20:37:07 -07:00
parent d7a902e3aa
commit ae868c2aa3
3 changed files with 66 additions and 32 deletions
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34
editor/src/lib.rs
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@ -11,6 +11,7 @@
// re-enable this when working on performance optimizations than have it block PRs.
#![allow(clippy::large_enum_variant)]
use crate::rect::Rect;
use crate::vertex::Vertex;
use std::error::Error;
use std::io;
@ -21,6 +22,7 @@ use winit::event::{ElementState, ModifiersState, VirtualKeyCode};
use winit::event_loop::ControlFlow;
pub mod ast;
mod rect;
pub mod text_state;
mod vertex;
@ -219,17 +221,39 @@ fn run_event_loop() -> Result<(), Box<dyn Error>> {
.expect("Failed to acquire next swap chain texture")
.output;
// Test Rectangle
let test_rect_1 = Rect {
top: 0.9,
left: -0.8,
width: 0.2,
height: 0.3,
color: [0.0, 1.0, 1.0],
};
let test_rect_2 = Rect {
top: 0.0,
left: 0.0,
width: 0.5,
height: 0.5,
color: [1.0, 1.0, 0.0],
};
let mut rectangles = Vec::new();
rectangles.extend_from_slice(&test_rect_1.as_array());
rectangles.extend_from_slice(&test_rect_2.as_array());
let mut rect_index_buffers = Vec::new();
rect_index_buffers.extend_from_slice(&Rect::INDEX_BUFFER);
rect_index_buffers.extend_from_slice(&Rect::INDEX_BUFFER);
// Vertex Buffer for drawing rectangles
let vertex_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
label: Some("Vertex Buffer"),
contents: bytemuck::cast_slice(&vertex::vertex_buffer_test()),
contents: bytemuck::cast_slice(&rectangles),
usage: wgpu::BufferUsage::VERTEX,
});
// Index Buffer for drawing rectangles
let index_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
label: Some("Index Buffer"),
contents: bytemuck::cast_slice(&vertex::index_buffer_test()),
contents: bytemuck::cast_slice(&rect_index_buffers),
usage: wgpu::BufferUsage::INDEX,
});
@ -262,9 +286,9 @@ fn run_event_loop() -> Result<(), Box<dyn Error>> {
render_pass.set_index_buffer(index_buffer.slice(..));
render_pass.draw_indexed(
0..((&vertex::index_buffer_test()).len() as u32), // Draw all of the vertices from our test data.
0, // Base Vertex
0..1, // Instances
0..((&rect_index_buffers).len() as u32), // Draw all of the vertices from our test data.
0, // Base Vertex
0..1, // Instances
);
}