chunk instances according to limits
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parent
f0b3e87abb
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13
src/main.rs
13
src/main.rs
@ -215,11 +215,14 @@ impl GraphicsData {
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}
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//drain the modeldata vec so entities can be /moved/ to models.entities
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let mut instance_count=0;
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let uniform_buffer_binding_size=<GraphicsData as framework::Example>::required_limits().max_uniform_buffer_binding_size as usize;
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let chunk_size=uniform_buffer_binding_size/MODEL_BUFFER_SIZE_BYTES;
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self.models.reserve(modeldatas.len());
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for (i,modeldata) in modeldatas.drain(..).enumerate() {
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let n_instances=modeldata.instances.len();
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if 0<n_instances{
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let model_uniforms = get_instances_buffer_data(&modeldata.instances);
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instance_count+=n_instances;
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for instances_chunk in modeldata.instances.rchunks(chunk_size){
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let model_uniforms = get_instances_buffer_data(instances_chunk);
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let model_buf = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
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label: Some(format!("Model{} Buf",i).as_str()),
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contents: bytemuck::cast_slice(&model_uniforms),
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@ -258,9 +261,8 @@ impl GraphicsData {
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usage: wgpu::BufferUsages::VERTEX,
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});
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//all of these are being moved here
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instance_count+=n_instances;
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self.models.push(ModelGraphics{
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instances:modeldata.instances,
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instances:instances_chunk.to_vec(),
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vertex_buf,
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entities: modeldata.entities.iter().map(|indices|{
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let index_buf = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
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@ -276,8 +278,6 @@ impl GraphicsData {
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bind_group: model_bind_group,
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model_buf,
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});
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}else{
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println!("WARNING: Model{} has 0 instances",i);
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}
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}
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println!("Graphics Objects: {}",self.models.len());
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@ -286,6 +286,7 @@ impl GraphicsData {
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}
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const MODEL_BUFFER_SIZE:usize=4*4 + 2*2 + 2+2 + 4;//let size=std::mem::size_of::<ModelInstance>();
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const MODEL_BUFFER_SIZE_BYTES:usize=MODEL_BUFFER_SIZE*4;
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fn get_instances_buffer_data(instances:&[ModelInstance]) -> Vec<f32> {
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let mut raw = Vec::with_capacity(MODEL_BUFFER_SIZE*instances.len());
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for (i,mi) in instances.iter().enumerate(){
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