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Clip and cull Mesh2D primitives in iced_wgpu

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This commit is contained in:
Héctor Ramón Jiménez 2020-04-28 04:41:09 +02:00
parent 69c60d372c
commit e65585ae17
5 changed files with 45 additions and 25 deletions
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23
wgpu/src/triangle.rs
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@ -201,15 +201,15 @@ impl Pipeline {
target_width: u32,
target_height: u32,
transformation: Transformation,
meshes: &[(Vector, &Mesh2D)],
bounds: Rectangle<u32>,
scale_factor: f32,
meshes: &[(Vector, Rectangle<u32>, &Mesh2D)],
) {
// This looks a bit crazy, but we are just counting how many vertices
// and indices we will need to handle.
// TODO: Improve readability
let (total_vertices, total_indices) = meshes
.iter()
.map(|(_, mesh)| (mesh.vertices.len(), mesh.indices.len()))
.map(|(_, _, mesh)| (mesh.vertices.len(), mesh.indices.len()))
.fold((0, 0), |(total_v, total_i), (v, i)| {
(total_v + v, total_i + i)
});
@ -230,7 +230,7 @@ impl Pipeline {
let mut last_index = 0;
// We upload everything upfront
for (origin, mesh) in meshes {
for (origin, _, mesh) in meshes {
let transform = (transformation
* Transformation::translate(origin.x, origin.y))
.into();
@ -316,16 +316,19 @@ impl Pipeline {
});
render_pass.set_pipeline(&self.pipeline);
render_pass.set_scissor_rect(
bounds.x,
bounds.y,
bounds.width,
bounds.height,
);
for (i, (vertex_offset, index_offset, indices)) in
offsets.into_iter().enumerate()
{
let bounds = meshes[i].1 * scale_factor;
render_pass.set_scissor_rect(
bounds.x,
bounds.y,
bounds.width,
bounds.height,
);
render_pass.set_bind_group(
0,
&self.constants,