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create ModelGraphicsInstance and include inverse transpose matrix for normals

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This commit is contained in:
Quaternions 2023-09-30 13:00:01 -07:00
parent 602816a618
commit 5cd40afa56
4 changed files with 38 additions and 22 deletions
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2
src/load_roblox.rs
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@ -249,7 +249,7 @@ pub fn generate_indexed_models_roblox(dom:rbx_dom_weak::WeakDom) -> Result<(Inde
} }
}; };
indexed_models[model_id].instances.push(ModelInstance { indexed_models[model_id].instances.push(ModelInstance {
model_transform, transform:model_transform,
color:glam::vec4(color3.r as f32/255f32, color3.g as f32/255f32, color3.b as f32/255f32, 1.0-*transparency), color:glam::vec4(color3.r as f32/255f32, color3.g as f32/255f32, color3.b as f32/255f32, 1.0-*transparency),
}); });
} }

40
src/main.rs
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@ -1,6 +1,6 @@
use std::{borrow::Cow, time::Instant}; use std::{borrow::Cow, time::Instant};
use wgpu::{util::DeviceExt, AstcBlock, AstcChannel}; use wgpu::{util::DeviceExt, AstcBlock, AstcChannel};
use model::{Vertex,ModelInstance}; use model::{Vertex,ModelInstance,ModelGraphicsInstance};
use body::{InputInstruction, PhysicsInstruction}; use body::{InputInstruction, PhysicsInstruction};
use instruction::{TimedInstruction, InstructionConsumer}; use instruction::{TimedInstruction, InstructionConsumer};
@ -18,7 +18,7 @@ struct Entity {
} }
struct ModelGraphics { struct ModelGraphics {
instances: Vec<ModelInstance>, instances: Vec<ModelGraphicsInstance>,
vertex_buf: wgpu::Buffer, vertex_buf: wgpu::Buffer,
entities: Vec<Entity>, entities: Vec<Entity>,
bind_group: wgpu::BindGroup, bind_group: wgpu::BindGroup,
@ -87,7 +87,7 @@ impl GraphicsData {
for model in &indexed_models.models{ for model in &indexed_models.models{
//make aabb and run vertices to get realistic bounds //make aabb and run vertices to get realistic bounds
for model_instance in &model.instances{ for model_instance in &model.instances{
self.physics.models.push(body::ModelPhysics::from_model(&model,model_instance.model_transform)); self.physics.models.push(body::ModelPhysics::from_model(&model,model_instance.transform));
} }
} }
println!("Physics Objects: {}",self.physics.models.len()); println!("Physics Objects: {}",self.physics.models.len());
@ -155,6 +155,14 @@ impl GraphicsData {
//the models received here are supposed to be tightly packed, i.e. no code needs to check if two models are using the same groups. //the models received here are supposed to be tightly packed, i.e. no code needs to check if two models are using the same groups.
let mut unique_texture_models=Vec::with_capacity(indexed_models.models.len()); let mut unique_texture_models=Vec::with_capacity(indexed_models.models.len());
for mut model in indexed_models.models.drain(..){ for mut model in indexed_models.models.drain(..){
//convert ModelInstance into ModelGraphicsInstance
let instances:Vec<ModelGraphicsInstance>=model.instances.iter().map(|instance|{
ModelGraphicsInstance{
transform: glam::Mat4::from(instance.transform),
normal_transform: glam::Mat4::from(instance.transform.inverse()).transpose(),
color: instance.color,
}
}).collect();
//check each group, if it's using a new texture then make a new clone of the model //check each group, if it's using a new texture then make a new clone of the model
let id=unique_texture_models.len(); let id=unique_texture_models.len();
let mut unique_textures=Vec::new(); let mut unique_textures=Vec::new();
@ -174,7 +182,7 @@ impl GraphicsData {
unique_vertices:model.unique_vertices.clone(), unique_vertices:model.unique_vertices.clone(),
texture:group.texture, texture:group.texture,
groups:Vec::new(), groups:Vec::new(),
instances:model.instances.clone(), instances:instances.clone(),
}); });
texture_index texture_index
}; };
@ -297,14 +305,16 @@ impl GraphicsData {
} }
} }
const MODEL_BUFFER_SIZE:usize=4*4 + 4;//let size=std::mem::size_of::<ModelInstance>(); const MODEL_BUFFER_SIZE:usize=4*4 + 4*4 + 4;//let size=std::mem::size_of::<ModelInstance>();
const MODEL_BUFFER_SIZE_BYTES:usize=MODEL_BUFFER_SIZE*4; const MODEL_BUFFER_SIZE_BYTES:usize=MODEL_BUFFER_SIZE*4;
fn get_instances_buffer_data(instances:&[ModelInstance]) -> Vec<f32> { fn get_instances_buffer_data(instances:&[ModelGraphicsInstance]) -> Vec<f32> {
let mut raw = Vec::with_capacity(MODEL_BUFFER_SIZE*instances.len()); let mut raw = Vec::with_capacity(MODEL_BUFFER_SIZE*instances.len());
for (i,mi) in instances.iter().enumerate(){ for (i,mi) in instances.iter().enumerate(){
let mut v = raw.split_off(MODEL_BUFFER_SIZE*i); let mut v = raw.split_off(MODEL_BUFFER_SIZE*i);
//model_transform //model transform
raw.extend_from_slice(&AsRef::<[f32; 4*4]>::as_ref(&glam::Mat4::from(mi.model_transform))[..]); raw.extend_from_slice(&AsRef::<[f32; 4*4]>::as_ref(&mi.transform)[..]);
//normal transform
raw.extend_from_slice(&AsRef::<[f32; 4*4]>::as_ref(&mi.normal_transform)[..]);
//color //color
raw.extend_from_slice(AsRef::<[f32; 4]>::as_ref(&mi.color)); raw.extend_from_slice(AsRef::<[f32; 4]>::as_ref(&mi.color));
raw.append(&mut v); raw.append(&mut v);
@ -350,34 +360,34 @@ impl framework::Example for GraphicsData {
indexed_models.push(primitives::the_unit_cube_lol()); indexed_models.push(primitives::the_unit_cube_lol());
println!("models.len = {:?}", indexed_models.len()); println!("models.len = {:?}", indexed_models.len());
indexed_models[0].instances.push(ModelInstance{ indexed_models[0].instances.push(ModelInstance{
model_transform:glam::Affine3A::from_translation(glam::vec3(10.,0.,-10.)), transform:glam::Affine3A::from_translation(glam::vec3(10.,0.,-10.)),
color:glam::Vec4::ONE, color:glam::Vec4::ONE,
}); });
//quad monkeys //quad monkeys
indexed_models[1].instances.push(ModelInstance{ indexed_models[1].instances.push(ModelInstance{
model_transform:glam::Affine3A::from_translation(glam::vec3(10.,5.,10.)), transform:glam::Affine3A::from_translation(glam::vec3(10.,5.,10.)),
color:glam::Vec4::ONE, color:glam::Vec4::ONE,
}); });
indexed_models[1].instances.push(ModelInstance{ indexed_models[1].instances.push(ModelInstance{
model_transform:glam::Affine3A::from_translation(glam::vec3(20.,5.,10.)), transform:glam::Affine3A::from_translation(glam::vec3(20.,5.,10.)),
color:glam::vec4(1.0,0.0,0.0,1.0), color:glam::vec4(1.0,0.0,0.0,1.0),
}); });
indexed_models[1].instances.push(ModelInstance{ indexed_models[1].instances.push(ModelInstance{
model_transform:glam::Affine3A::from_translation(glam::vec3(10.,5.,20.)), transform:glam::Affine3A::from_translation(glam::vec3(10.,5.,20.)),
color:glam::vec4(0.0,1.0,0.0,1.0), color:glam::vec4(0.0,1.0,0.0,1.0),
}); });
indexed_models[1].instances.push(ModelInstance{ indexed_models[1].instances.push(ModelInstance{
model_transform:glam::Affine3A::from_translation(glam::vec3(20.,5.,20.)), transform:glam::Affine3A::from_translation(glam::vec3(20.,5.,20.)),
color:glam::vec4(0.0,0.0,1.0,1.0), color:glam::vec4(0.0,0.0,1.0,1.0),
}); });
//teapot //teapot
indexed_models[2].instances.push(ModelInstance{ indexed_models[2].instances.push(ModelInstance{
model_transform:glam::Affine3A::from_translation(glam::vec3(-10.,5.,10.)), transform:glam::Affine3A::from_translation(glam::vec3(-10.,5.,10.)),
color:glam::Vec4::ONE, color:glam::Vec4::ONE,
}); });
//ground //ground
indexed_models[3].instances.push(ModelInstance{ indexed_models[3].instances.push(ModelInstance{
model_transform:glam::Affine3A::from_translation(glam::vec3(0.,0.,0.))*glam::Affine3A::from_scale(glam::vec3(160.0, 1.0, 160.0)), transform:glam::Affine3A::from_translation(glam::vec3(0.,0.,0.))*glam::Affine3A::from_scale(glam::vec3(160.0, 1.0, 160.0)),
color:glam::Vec4::ONE, color:glam::Vec4::ONE,
}); });

11
src/model.rs
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@ -41,17 +41,22 @@ pub struct IndexedModelSingleTexture{
pub unique_vertices:Vec<IndexedVertex>, pub unique_vertices:Vec<IndexedVertex>,
pub texture:Option<u32>,//RenderPattern? material/texture/shader/flat color pub texture:Option<u32>,//RenderPattern? material/texture/shader/flat color
pub groups: Vec<IndexedGroupFixedTexture>, pub groups: Vec<IndexedGroupFixedTexture>,
pub instances:Vec<ModelInstance>, pub instances:Vec<ModelGraphicsInstance>,
} }
pub struct ModelSingleTexture{ pub struct ModelSingleTexture{
pub instances: Vec<ModelInstance>, pub instances: Vec<ModelGraphicsInstance>,
pub vertices: Vec<Vertex>, pub vertices: Vec<Vertex>,
pub entities: Vec<Vec<u16>>, pub entities: Vec<Vec<u16>>,
pub texture: Option<u32>, pub texture: Option<u32>,
} }
#[derive(Clone)] #[derive(Clone)]
pub struct ModelGraphicsInstance{
pub transform:glam::Mat4,
pub normal_transform:glam::Mat4,
pub color:glam::Vec4,
}
pub struct ModelInstance{ pub struct ModelInstance{
pub model_transform:glam::Affine3A, pub transform:glam::Affine3A,
pub color:glam::Vec4, pub color:glam::Vec4,
} }
pub struct IndexedModelInstances{ pub struct IndexedModelInstances{

7
src/shader.wgsl
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@ -42,7 +42,8 @@ fn vs_sky(@builtin(vertex_index) vertex_index: u32) -> SkyOutput {
} }
struct ModelInstance{ struct ModelInstance{
model_transform:mat4x4<f32>, transform:mat4x4<f32>,
normal_transform:mat4x4<f32>,
color:vec4<f32>, color:vec4<f32>,
} }
//my fancy idea is to create a megatexture for each model that includes all the textures each intance will need //my fancy idea is to create a megatexture for each model that includes all the textures each intance will need
@ -75,9 +76,9 @@ fn vs_entity_texture(
@location(2) normal: vec3<f32>, @location(2) normal: vec3<f32>,
@location(3) color: vec4<f32>, @location(3) color: vec4<f32>,
) -> EntityOutputTexture { ) -> EntityOutputTexture {
var position: vec4<f32> = model_instances[instance].model_transform * vec4<f32>(pos, 1.0); var position: vec4<f32> = model_instances[instance].transform * vec4<f32>(pos, 1.0);
var result: EntityOutputTexture; var result: EntityOutputTexture;
result.normal = (model_instances[instance].model_transform * vec4<f32>(normal, 0.0)).xyz; result.normal = (model_instances[instance].normal_transform * vec4<f32>(normal, 1.0)).xyz;
result.texture = texture; result.texture = texture;
result.color = color; result.color = color;
result.model_color = model_instances[instance].color; result.model_color = model_instances[instance].color;