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Entities wait for meshes to load

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This commit is contained in:
Carter Anderson 2020-05-15 19:32:49 -07:00
parent bf7f222318
commit ad66f87ff6
1 changed files with 9 additions and 3 deletions
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12
crates/bevy_render/src/mesh.rs
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@ -3,7 +3,7 @@ use crate::{
state_descriptors::{IndexFormat, PrimitiveTopology},
VertexBufferDescriptor, VertexBufferDescriptors, VertexFormat,
},
render_resource::{BufferInfo, BufferUsage, RenderResourceAssignments},
render_resource::{BufferInfo, BufferUsage, RenderResourceAssignments, EntitiesWaitingForAssets},
renderer::{RenderResourceContext, RenderResources},
shader::AsUniforms,
Renderable, Vertex,
@ -333,6 +333,8 @@ fn setup_mesh_resource(
render_resources: &dyn RenderResourceContext,
render_resource_assignments: &mut RenderResourceAssignments,
vertex_buffer_descriptor: &VertexBufferDescriptor,
entities_waiting_for_assets: &EntitiesWaitingForAssets,
entity: Entity,
handle: Handle<Mesh>,
meshes: &Assets<Mesh>,
) {
@ -372,6 +374,7 @@ fn setup_mesh_resource(
(vertex_buffer, Some(index_buffer))
} else {
// mesh doesn't exist. it probably hasn't loaded yet
entities_waiting_for_assets.add(entity);
return;
}
};
@ -387,16 +390,19 @@ pub fn mesh_resource_provider_system(resources: &mut Resources) -> Box<dyn Sched
SystemBuilder::new("mesh_resource_provider")
.read_resource::<RenderResources>()
.read_resource::<Assets<Mesh>>()
.read_resource::<EntitiesWaitingForAssets>()
.with_query(<(Read<Handle<Mesh>>, Write<Renderable>)>::query())
.build(
move |_, world, (render_resource_context, meshes /* asset_batchers*/), query| {
move |_, world, (render_resource_context, meshes, entities_waiting_for_assets), query| {
let render_resources = &*render_resource_context.context;
// TODO: remove this once batches are pipeline specific and deprecate assigned_meshes draw target
for (handle, mut renderable) in query.iter_mut(world) {
for (entity, (handle, mut renderable)) in query.iter_entities_mut(world) {
setup_mesh_resource(
render_resources,
&mut renderable.render_resource_assignments,
&vertex_buffer_descriptor,
entities_waiting_for_assets,
entity,
*handle,
&meshes,
);