Struct SimpleBuffer

Source

pub struct SimpleBuffer { /* private fields */ }

Expand description

wrapper for Buffer which stores count of elements

Implementations§

Source §

impl SimpleBuffer

Source

pub fn size(&self) -> u32

Examples found in repository ?

examples/display_rect.rs (line 67)

31fn render(app_data: &AppData, _: &mut (), mut encoder: CommandEncoder, view: TextureView) {
32    let vertex_buffer = BufferCreator::vertex(&app_data.device)
33        .data(vec![
34            ColoredVertex {
35                position: [-0.5, 0.5, 0.0],
36                color: [0.2, 0.0, 0.3],
37            },
38            ColoredVertex {
39                position: [-0.5, -0.5, 0.0],
40                color: [0.2, 0.0, 0.3],
41            },
42            ColoredVertex {
43                position: [0.5, 0.5, 0.0],
44                color: [0.2, 0.0, 0.3],
45            },
46            ColoredVertex {
47                position: [0.5, -0.5, 0.0],
48                color: [0.2, 0.0, 0.3],
49            },
50        ])
51        .build();
52
53    let indices_buffer = BufferCreator::indices(&app_data.device)
54        .data(vec![0, 1, 2, 2, 1, 3])
55        .build();
56
57    {
58        let mut render_pass: RenderPass = RenderPassCreator::new(&view)
59            .clear_color(Color::BLACK)
60            .build(&mut encoder);
61
62        render_pass.set_pipeline(app_data.render_pipelines.get(0).unwrap());
63
64        render_pass.set_vertex_buffer(0, vertex_buffer.slice());
65        render_pass.set_index_buffer(indices_buffer.slice(), wgpu::IndexFormat::Uint32);
66
67        render_pass.draw_indexed(0..indices_buffer.size(), 0, 0..1);
68    }
69
70    app_data.queue.submit(once(encoder.finish()));
71}

Source

pub fn slice(&self) -> BufferSlice<'_>

Examples found in repository ?

examples/moving_triangle.rs (line 71)

43fn render(app_data: &AppData, state: &mut State, mut encoder: CommandEncoder, view: TextureView) {
44    let vertex_buffer = BufferCreator::vertex(&app_data.device)
45        .data(vec![
46            ColoredPosVertex {
47                position: [
48                    (0.0 + state.pos.0) * state.x_scale,
49                    TRIANGLE_SIZE + state.pos.1,
50                ],
51            },
52            ColoredPosVertex {
53                position: [
54                    (-TRIANGLE_SIZE + state.pos.0) * state.x_scale,
55                    -TRIANGLE_SIZE + state.pos.1,
56                ],
57            },
58            ColoredPosVertex {
59                position: [
60                    (TRIANGLE_SIZE + state.pos.0) * state.x_scale,
61                    -TRIANGLE_SIZE + state.pos.1,
62                ],
63            },
64        ])
65        .build();
66
67    {
68        let mut render_pass = RenderPassCreator::new(&view).build(&mut encoder);
69
70        render_pass.set_pipeline(app_data.render_pipelines.get(0).unwrap());
71        render_pass.set_vertex_buffer(0, vertex_buffer.slice());
72
73        render_pass.draw(0..3, 0..1);
74    }
75
76    app_data.queue.submit(once(encoder.finish()));
77}

More examples

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examples/display_rect.rs (line 64)

31fn render(app_data: &AppData, _: &mut (), mut encoder: CommandEncoder, view: TextureView) {
32    let vertex_buffer = BufferCreator::vertex(&app_data.device)
33        .data(vec![
34            ColoredVertex {
35                position: [-0.5, 0.5, 0.0],
36                color: [0.2, 0.0, 0.3],
37            },
38            ColoredVertex {
39                position: [-0.5, -0.5, 0.0],
40                color: [0.2, 0.0, 0.3],
41            },
42            ColoredVertex {
43                position: [0.5, 0.5, 0.0],
44                color: [0.2, 0.0, 0.3],
45            },
46            ColoredVertex {
47                position: [0.5, -0.5, 0.0],
48                color: [0.2, 0.0, 0.3],
49            },
50        ])
51        .build();
52
53    let indices_buffer = BufferCreator::indices(&app_data.device)
54        .data(vec![0, 1, 2, 2, 1, 3])
55        .build();
56
57    {
58        let mut render_pass: RenderPass = RenderPassCreator::new(&view)
59            .clear_color(Color::BLACK)
60            .build(&mut encoder);
61
62        render_pass.set_pipeline(app_data.render_pipelines.get(0).unwrap());
63
64        render_pass.set_vertex_buffer(0, vertex_buffer.slice());
65        render_pass.set_index_buffer(indices_buffer.slice(), wgpu::IndexFormat::Uint32);
66
67        render_pass.draw_indexed(0..indices_buffer.size(), 0, 0..1);
68    }
69
70    app_data.queue.submit(once(encoder.finish()));
71}