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indexed rendering

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This commit is contained in:
Quaternions 2023-09-06 13:59:33 -07:00
parent 2dba9554ea
commit 75695946a0
1 changed files with 34 additions and 17 deletions
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47
src/main.rs
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@ -12,18 +12,20 @@ struct Vertex {
}
struct Entity {
vertex_count: u32,
vertex_buf: wgpu::Buffer,
index_count: u32,
index_buf: wgpu::Buffer,
}
//temp?
struct ModelData {
transform: glam::Affine3A,
vertex_buf: wgpu::Buffer,
entities: Vec<Entity>,
}
struct Model {
transform: glam::Affine3A,
vertex_buf: wgpu::Buffer,
entities: Vec<Entity>,
bind_group: wgpu::BindGroup,
model_buf: wgpu::Buffer,
@ -165,34 +167,47 @@ fn get_transform_uniform_data(transform:&glam::Affine3A) -> [f32; 4*4] {
fn add_obj(device:&wgpu::Device,modeldatas:& mut Vec<ModelData>,source:&[u8]){
let data = obj::ObjData::load_buf(&source[..]).unwrap();
let mut vertices = Vec::new();
let mut vertex_index = std::collections::HashMap::<obj::IndexTuple,u16>::new();
for object in data.objects {
let mut entities = Vec::<Entity>::new();
for group in object.groups {
vertices.clear();
let mut indices = Vec::new();
for poly in group.polys {
for end_index in 2..poly.0.len() {
for &index in &[0, end_index - 1, end_index] {
let obj::IndexTuple(position_id, _texture_id, normal_id) =
poly.0[index];
let vert = poly.0[index];
if let Some(&i)=vertex_index.get(&vert){
indices.push(i as u16);
}else{
let i=vertices.len() as u16;
vertices.push(Vertex {
pos: data.position[position_id],
normal: data.normal[normal_id.unwrap()],
})
pos: data.position[vert.0],
normal: data.normal[vert.2.unwrap()],
});
vertex_index.insert(vert,i);
indices.push(i);
}
}
}
}
let index_buf = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
label: Some("Index"),
contents: bytemuck::cast_slice(&indices),
usage: wgpu::BufferUsages::INDEX,
});
entities.push(Entity {
index_buf,
index_count: indices.len() as u32,
});
}
let vertex_buf = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
label: Some("Vertex"),
contents: bytemuck::cast_slice(&vertices),
usage: wgpu::BufferUsages::VERTEX,
});
entities.push(Entity {
vertex_count: vertices.len() as u32,
vertex_buf,
});
}
modeldatas.push(ModelData {
transform: glam::Affine3A::default(),
vertex_buf,
entities,
})
}
@ -512,6 +527,7 @@ impl strafe_client::framework::Example for Skybox {
//all of these are being moved here
models.push(Model{
transform: modeldata.transform,
vertex_buf:modeldata.vertex_buf,
entities: modeldata.entities,
bind_group: model_bind_group,
model_buf: model_buf,
@ -700,10 +716,11 @@ impl strafe_client::framework::Example for Skybox {
rpass.set_pipeline(&self.entity_pipeline);
for model in self.models.iter() {
rpass.set_bind_group(1, &model.bind_group, &[]);
rpass.set_vertex_buffer(0, model.vertex_buf.slice(..));
for entity in model.entities.iter() {
rpass.set_vertex_buffer(0, entity.vertex_buf.slice(..));
rpass.draw(0..entity.vertex_count, 0..1);
rpass.set_index_buffer(entity.index_buf.slice(..), wgpu::IndexFormat::Uint16);
rpass.draw_indexed(0..entity.index_count, 0, 0..1);
}
}