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Begin work on supporting writing different vertex counts

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This commit is contained in:
Joshua Goins 2023-12-10 14:52:49 -05:00
parent fc2d2f73cf
commit 5f1721fe14
1 changed files with 59 additions and 0 deletions
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59
src/model.rs
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@ -340,6 +340,7 @@ pub struct MDL {
file_header: ModelFileHeader,
vertex_declarations: Vec<VertexDeclaration>,
model_data: ModelData,
header_offset: u64,
pub lods: Vec<Lod>,
pub affected_bone_names: Vec<String>,
@ -573,6 +574,7 @@ impl MDL {
file_header: model_file_header,
vertex_declarations,
model_data: model,
header_offset,
lods,
affected_bone_names,
material_names
@ -588,6 +590,63 @@ impl MDL {
// Update vertex count in header
self.model_data.meshes[part.mesh_index as usize].vertex_count = part.vertices.len() as u16;
self.model_data.meshes[part.mesh_index as usize].index_count = part.indices.len() as u16 as u32;
// update values
for i in 0..self.file_header.lod_count {
let mut vertex_offset = 0;
for j in self.model_data.lods[i as usize].mesh_index
..self.model_data.lods[i as usize].mesh_index + self.model_data.lods[i as usize].mesh_count
{
let mesh = &mut self.model_data.meshes[j as usize];
for i in 0..mesh.vertex_stream_count as usize {
mesh.vertex_buffer_offsets[i] = vertex_offset;
vertex_offset += mesh.vertex_count as u32 * mesh.vertex_buffer_strides[i] as u32;
}
}
}
for lod in &mut self.model_data.lods {
let mut total_vertex_buffer_size = 0;
// still slightly off?
for j in lod.mesh_index
..lod.mesh_index + lod.mesh_count
{
let vertex_count = self.model_data.meshes[j as usize].vertex_count;
let mut total_vertex_stride: u32 = 0;
for i in 0..self.model_data.meshes[j as usize].vertex_stream_count as usize {
total_vertex_stride += self.model_data.meshes[j as usize].vertex_buffer_strides[i] as u32;
}
total_vertex_buffer_size += vertex_count as u32 * total_vertex_stride;
}
lod.vertex_buffer_size = total_vertex_buffer_size; // sizeof Vertex
}
// update lod values
let mut data_offset = self.header_offset as u32;
for lod in &mut self.model_data.lods {
lod.vertex_data_offset = data_offset;
data_offset = lod.vertex_data_offset + lod.vertex_buffer_size;
lod.index_data_offset = data_offset;
data_offset = lod.index_data_offset + lod.index_buffer_size;
}
for i in 0..self.lods.len() {
self.file_header.vertex_buffer_size[i] = self.model_data.lods[i].vertex_buffer_size;
}
for i in 0..self.lods.len() {
self.file_header.vertex_offsets[i] = self.model_data.lods[i].vertex_data_offset;
}
}
pub fn write_to_buffer(&self) -> Option<ByteBuffer> {