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improve performance dynamic uniforms

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This commit is contained in:
Carter Anderson 2020-02-04 00:06:17 -08:00
parent c4b10ea4f7
commit 7c2eb63a47
2 changed files with 84 additions and 33 deletions
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89
src/render/render_graph_2/shader.rs
View file

@ -261,8 +261,7 @@ impl<T> ResourceProvider for UniformResourceProvider<T>
where
T: AsUniforms + Send + Sync + 'static,
{
fn initialize(&mut self, renderer: &mut dyn super::Renderer, world: &mut World) {
}
fn initialize(&mut self, renderer: &mut dyn super::Renderer, world: &mut World) {}
fn update(&mut self, renderer: &mut dyn super::Renderer, world: &mut World) {
let query = <Read<T>>::query();
@ -270,62 +269,96 @@ where
// TODO: this breaks down in multiple ways:
// (1) resource_info will be set after the first run so this won't update.
// (2) if we create new buffers, the old bind groups will be invalid
// reset all uniform buffer info counts
for name in self.uniform_buffer_info_names.iter() {
renderer.get_dynamic_uniform_buffer_info_mut(name).unwrap().count = 0;
}
for uniforms in query.iter(world) {
let uniform_layouts = uniforms.get_uniform_layouts();
for (i, uniform_info) in uniforms.get_uniform_infos().iter().enumerate() {
if let None = renderer.get_dynamic_uniform_buffer_info(uniform_info.name) {
let uniform_layout = uniform_layouts[i];
let mut info = DynamicUniformBufferInfo::new();
info.size = uniform_layout.iter().map(|u| u.get_size()).fold(0, |total, current| total + current);
self.uniform_buffer_info_names.insert(uniform_info.name.to_string());
info.size = uniform_layout
.iter()
.map(|u| u.get_size())
.fold(0, |total, current| total + current);
self.uniform_buffer_info_names
.insert(uniform_info.name.to_string());
renderer.add_dynamic_uniform_buffer_info(uniform_info.name, info);
}
let mut info = renderer.get_dynamic_uniform_buffer_info_mut(uniform_info.name)
let mut info = renderer
.get_dynamic_uniform_buffer_info_mut(uniform_info.name)
.unwrap();
info.count += 1;
}
}
// allocate uniform buffers
// for (name, info) in self.dynamic_uniform_buffer_infos.iter_mut() {
// if let Some(_) = renderer.get_resource_info(name) {
// continue;
// }
for name in self.uniform_buffer_info_names.iter() {
if let Some(_) = renderer.get_resource_info(name) {
continue;
}
// // allocate enough space for twice as many entities as there are currently;
// info.capacity = info.count * 2;
// let size = wgpu::BIND_BUFFER_ALIGNMENT * info.capacity;
// renderer.create_buffer(name, size, wgpu::BufferUsage::COPY_DST | wgpu::BufferUsage::UNIFORM)
// }
let info = renderer.get_dynamic_uniform_buffer_info_mut(name).unwrap();
// allocate enough space for twice as many entities as there are currently;
info.capacity = info.count * 2;
let size = wgpu::BIND_BUFFER_ALIGNMENT * info.capacity;
renderer.create_buffer(
name,
size,
wgpu::BufferUsage::COPY_DST | wgpu::BufferUsage::UNIFORM,
);
}
// copy entity uniform data to buffers
for name in self.uniform_buffer_info_names.iter() {
let info = renderer.get_dynamic_uniform_buffer_info_mut(name).unwrap();
info.capacity = info.count;
let size = wgpu::BIND_BUFFER_ALIGNMENT * info.count;
let mut data = vec![Default::default(); size as usize];
// renderer
// .create_buffer_mapped("tmp_uniform_mapped", size as usize, wgpu::BufferUsage::COPY_SRC, &mut |mapped| {
let size = {
let info = renderer.get_dynamic_uniform_buffer_info(name).unwrap();
wgpu::BIND_BUFFER_ALIGNMENT * info.count
};
let alignment = wgpu::BIND_BUFFER_ALIGNMENT as usize;
let mut offset = 0usize;
for (i, (entity, uniforms)) in query.iter_entities(world).enumerate() {
for (i, (entity, _uniforms)) in query.iter_entities(world).enumerate() {
// TODO: check if index has changed. if it has, then entity should be updated
// TODO: only mem-map entities if their data has changed
let info = renderer.get_dynamic_uniform_buffer_info_mut(name).unwrap();
info.offsets.insert(entity, offset as u64);
info.indices.insert(i, entity);
// TODO: try getting ref first
if let Some(uniform_bytes) = uniforms.get_uniform_bytes(name) {
data[offset..(offset + uniform_bytes.len())].copy_from_slice(uniform_bytes.as_slice());
offset += alignment;
}
offset += alignment;
}
// });
// let mut data = vec![Default::default(); size as usize];
renderer.create_buffer_mapped(
"tmp_uniform_mapped",
size as usize,
wgpu::BufferUsage::COPY_SRC,
&mut |mapped| {
let alignment = wgpu::BIND_BUFFER_ALIGNMENT as usize;
let mut offset = 0usize;
for uniforms in query.iter(world) {
// TODO: check if index has changed. if it has, then entity should be updated
// TODO: only mem-map entities if their data has changed
// TODO: try getting ref first
if let Some(uniform_bytes) = uniforms.get_uniform_bytes(name) {
mapped[offset..(offset + uniform_bytes.len())]
.copy_from_slice(uniform_bytes.as_slice());
offset += alignment;
}
}
},
);
// TODO: port me
// let uniform_buffer = self.buffers.get(name);
renderer.create_buffer_with_data(name, &data, wgpu::BufferUsage::UNIFORM);
// renderer.create_buffer_with_data(name, &data, wgpu::BufferUsage::UNIFORM);
renderer.copy_buffer_to_buffer("tmp_uniform_mapped", 0, name, 0, size);
}
}

28
src/render/render_graph_2/wgpu_renderer.rs
View file

@ -33,6 +33,7 @@ pub struct WgpuRenderer {
pub device: wgpu::Device,
pub queue: wgpu::Queue,
pub surface: Option<wgpu::Surface>,
pub encoder: Option<wgpu::CommandEncoder>,
pub swap_chain_descriptor: wgpu::SwapChainDescriptor,
pub render_pipelines: HashMap<String, wgpu::RenderPipeline>,
pub buffers: HashMap<String, wgpu::Buffer>,
@ -72,6 +73,7 @@ impl WgpuRenderer {
device,
queue,
surface: None,
encoder: None,
swap_chain_descriptor,
render_pipelines: HashMap::new(),
buffers: HashMap::new(),
@ -465,18 +467,23 @@ impl Renderer for WgpuRenderer {
}
fn process_render_graph(&mut self, render_graph: &mut RenderGraph, world: &mut World) {
// TODO: this self.encoder handoff is a bit gross, but its here to give resource providers access to buffer copies without
// exposing the wgpu renderer internals to ResourceProvider traits. if this can be made cleaner that would be pretty cool.
self.encoder = Some(self
.device
.create_command_encoder(&wgpu::CommandEncoderDescriptor { todo: 0 }));
for resource_provider in render_graph.resource_providers.iter_mut() {
resource_provider.update(self, world);
}
let mut encoder = self.encoder.take().unwrap();
let mut swap_chain = world.resources.get_mut::<wgpu::SwapChain>().unwrap();
let frame = swap_chain
.get_next_texture()
.expect("Timeout when acquiring next swap chain texture");
let mut encoder = self
.device
.create_command_encoder(&wgpu::CommandEncoderDescriptor { todo: 0 });
// self.setup_dynamic_entity_shader_uniforms(world, render_graph, &mut encoder);
@ -574,12 +581,24 @@ impl Renderer for WgpuRenderer {
fn create_buffer_mapped(&mut self, name: &str, size: usize, buffer_usage: wgpu::BufferUsage, setup_data: &mut dyn FnMut(&mut [u8])) {
let mut mapped = self.device.create_buffer_mapped(size, buffer_usage);
setup_data(&mut mapped.data);
mapped.finish();
let buffer = mapped.finish();
self.add_resource_info(
name,
ResourceInfo::Buffer {
buffer_usage,
size: size as u64,
},
);
self.buffers.insert(name.to_string(), buffer);
}
fn copy_buffer_to_buffer(&mut self, source_buffer: &str, source_offset: u64, destination_buffer: &str, destination_offset: u64, size: u64) {
let source = self.buffers.get(source_buffer).unwrap();
let destination = self.buffers.get(destination_buffer).unwrap();
let encoder = self.encoder.as_mut().unwrap();
encoder.copy_buffer_to_buffer(source, source_offset, destination, destination_offset, size);
}
fn get_dynamic_uniform_buffer_info(&self, name: &str) -> Option<&DynamicUniformBufferInfo> {
self.dynamic_uniform_buffer_info.get(name)
@ -630,7 +649,6 @@ impl<'a, 'b, 'c, 'd> RenderPass for WgpuRenderPass<'a, 'b, 'c, 'd> {
.draw_indexed(indices, base_vertex, instances);
}
// TODO: maybe move setup to renderer.setup_bind_groups(&pipeline_desc);
fn setup_bind_groups(&mut self, entity: Option<&Entity>) {
for (i, bind_group) in self
.pipeline_descriptor