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Runs, however buggy

pull/1/head
Milk.H 2023-03-08 15:09:25 +01:00
parent 0df79f7509
commit 219fc7f57f
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GPG Key ID: 3D9DAE46AAC37BD8
5 changed files with 96 additions and 91 deletions
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1
Cargo.toml
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@ -8,7 +8,6 @@ edition = "2021"
[dependencies]
field-offset = "0.3.4"
image = "0.24.5"
gl = "0.14.0"
cgmath = "0.18.0"
tobj = "2.0.0"
glow = "0.12.1"

25
src/main.rs
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@ -3,6 +3,7 @@ use glfw;
use glfw::{Action, Context, Key};
use cgmath::{Matrix4, vec3, Point3, Deg, perspective};
use cgmath::prelude::*;
use std::rc::Rc;
const SCR_WIDTH: u32 = 1600;
const SCR_HEIGHT: u32 = 900;
const TITLE: &str = "GLFWtest";
@ -56,13 +57,13 @@ fn main() {
let mut lastFrame: f32 = 0.0;
//gl::load_with(|ptr| window.get_proc_address(ptr) as *const _);
let gl = std::rc::Rc::new(glow::Context::from_loader_function(|s| window.get_proc_address(s) as *const _));
let gl = std::rc::Rc::new(unsafe{glow::Context::from_loader_function(|s| window.get_proc_address(s) as *const _)});
let (ourshader, ourModel) = unsafe {
gl::Enable(gl::DEPTH_TEST);
gl.enable(glow::DEPTH_TEST);
let ourShader = shader::shader::new("model", gl);
let ourShader = shader::shader::new("model", Rc::clone(&gl));
let ourModel = model::Model::new("resources/models/TestCarModel/CarW4.obj");
let ourModel = model::Model::new("resources/models/TestCarModel/CarW4.obj", Rc::clone(&gl));
(ourShader, ourModel)
};
@ -72,7 +73,6 @@ fn main() {
let projection: Matrix4<f32> = perspective(Deg(45.0), SCR_WIDTH as f32/ SCR_HEIGHT as f32, 0.1, 100.0);
println!("entering main loop");
unsafe {gl::StencilOp(gl::KEEP, gl::KEEP, gl::REPLACE);}
while !window.should_close() {
let currentFrame = glfw.get_time() as f32;
deltaTime = currentFrame - lastFrame;
@ -81,23 +81,23 @@ fn main() {
processInput(&mut window, deltaTime, &mut camera);
unsafe {
gl::Enable(gl::DEPTH_TEST);
gl::Clear(gl::COLOR_BUFFER_BIT | gl::DEPTH_BUFFER_BIT);
gl.enable(glow::DEPTH_TEST);
gl.clear(glow::COLOR_BUFFER_BIT | glow::DEPTH_BUFFER_BIT);
// outline
ourshader.Use();
let Projection: Matrix4<f32> = perspective(Deg(camera.Zoom), SCR_WIDTH as f32 / SCR_HEIGHT as f32, 0.1, 100.0);
let view = camera.GetViewMatrix();
ourshader.setMat4(&CString::new("projection").unwrap(), &projection);
ourshader.setMat4(&CString::new("view").unwrap(), &view);
ourshader.setMat4("projection", &projection);
ourshader.setMat4("view", &view);
//let mut model = Matrix4::<f32>::from_translation(vec3(0.0, -0.3, 0.0));
let mut model: Matrix4<f32> = Matrix4::from_axis_angle(vec3(0.0, -1.0, 0.0).normalize(),
cgmath::Rad(glfw.get_time() as f32));
model = model * Matrix4::from_scale(0.2);
ourshader.setMat4(&CString::new("model").unwrap(), &model);
ourshader.setMat4("model", &model);
ourModel.Draw(&ourshader);
@ -131,7 +131,7 @@ fn main() {
}
*/
}
/*
fn process_events(events: &Receiver<(f64, glfw::WindowEvent)>,
firstMouse: &mut bool,
lastX: &mut f32,
@ -142,7 +142,7 @@ fn process_events(events: &Receiver<(f64, glfw::WindowEvent)>,
glfw::WindowEvent::FramebufferSize(width, height) => {
// make sure the viewport matches the new window dimensions; note that width and
// height will be significantly larger than specified on retina displays.
unsafe { gl::Viewport(0, 0, width, height) }
unsafe { gl.viewport(0, 0, width, height) }
}
glfw::WindowEvent::CursorPos(xpos, ypos) => {
let (xpos, ypos) = (xpos as f32, ypos as f32);
@ -167,3 +167,4 @@ fn process_events(events: &Receiver<(f64, glfw::WindowEvent)>,
}
}
}
*/

55
src/model.rs
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@ -3,10 +3,10 @@
use std::os::raw::c_void;
use std::path::Path;
use std::rc::Rc;
use cgmath::{vec2, vec3};
use gl;
use image;
use glow::*;
use image::DynamicImage::*;
use image::GenericImage;
use tobj;
@ -24,9 +24,9 @@ pub struct Model {
impl Model {
/// constructor, expects a filepath to a 3D model.
pub fn new(path: &str) -> Model {
pub fn new(path: &str, gl: std::rc::Rc<glow::Context>) -> Model {
let mut model = Model::default();
model.loadModel(path);
model.loadModel(path, Rc::clone(&gl));
model
}
@ -37,7 +37,7 @@ impl Model {
}
// loads a model from file and stores the resulting meshes in the meshes vector.
fn loadModel(&mut self, path: &str) {
fn loadModel(&mut self, path: &str, gl: std::rc::Rc<glow::Context>) {
let path = Path::new(path);
// retrieve the directory path of the filepath
@ -53,9 +53,6 @@ impl Model {
let mut vertices: Vec<Vertex> = Vec::with_capacity(num_vertices);
let indices: Vec<u32> = mesh.indices.clone();
println!("num vertices = {}", num_vertices);
println!("num normals = {}", &mesh.normals.len());
println!("num TexCoords = {}", &mesh.texcoords.len());
let (p, n, t) = (&mesh.positions, &mesh.normals, &mesh.texcoords);
for i in 0..num_vertices {
vertices.push(Vertex {
@ -73,28 +70,28 @@ impl Model {
// 1. diffuse map
if !material.diffuse_texture.is_empty() {
let texture = self.loadMaterialTexture(&material.diffuse_texture, "texture_diffuse");
let texture = self.loadMaterialTexture(&material.diffuse_texture, "texture_diffuse", Rc::clone(&gl));
textures.push(texture);
}
// 2. specular map
if !material.specular_texture.is_empty() {
let texture = self.loadMaterialTexture(&material.specular_texture, "texture_specular");
let texture = self.loadMaterialTexture(&material.specular_texture, "texture_specular", Rc::clone(&gl));
textures.push(texture);
}
// 3. normal map
if !material.normal_texture.is_empty() {
let texture = self.loadMaterialTexture(&material.normal_texture, "texture_normal");
let texture = self.loadMaterialTexture(&material.normal_texture, "texture_normal", Rc::clone(&gl));
textures.push(texture);
}
// NOTE: no height maps
}
self.meshes.push(Mesh::new(vertices, indices, textures));
self.meshes.push(Mesh::new(vertices, indices, textures, Rc::clone(&gl)));
}
}
fn loadMaterialTexture(&mut self, path: &str, typeName: &str) -> Texture {
fn loadMaterialTexture(&mut self, path: &str, typeName: &str, gl: Rc<glow::Context>) -> Texture {
{
let texture = self.textures_loaded.iter().find(|t| t.path == path);
if let Some(texture) = texture {
@ -103,7 +100,7 @@ impl Model {
}
let texture = Texture {
id: unsafe { TextureFromFile(path, &self.directory) },
id: unsafe { TextureFromFile(path, &self.directory, std::rc::Rc::clone(&gl)) },
type_: typeName.into(),
path: path.into()
};
@ -112,33 +109,31 @@ impl Model {
}
}
unsafe fn TextureFromFile(path: &str, directory: &str) -> u32 {
unsafe fn TextureFromFile(path: &str, directory: &str, gl: Rc<glow::Context>) -> glow::NativeTexture {
let filename = format!("{}/{}", directory, path);
let mut textureID = 0;
gl::GenTextures(1, &mut textureID);
let mut textureID = gl.create_texture().unwrap();
let img = image::open(&Path::new(&filename)).expect("Texture failed to load");
let img = img.flipv();
let format = match img {
ImageLuma8(_) => gl::RED,
ImageLumaA8(_) => gl::RG,
ImageRgb8(_) => gl::RGB,
ImageRgba8(_) => gl::RGBA,
ImageLuma8(_) => glow::RED,
ImageLumaA8(_) => glow::RG,
ImageRgb8(_) => glow::RGB,
ImageRgba8(_) => glow::RGBA,
_ => panic!("really weird image type"),
};
let data = img.as_bytes();
gl::BindTexture(gl::TEXTURE_2D, textureID);
gl::TexImage2D(gl::TEXTURE_2D, 0, format as i32, img.width() as i32, img.height() as i32,
0, format, gl::UNSIGNED_BYTE, &data[0] as *const u8 as *const c_void);
gl::GenerateMipmap(gl::TEXTURE_2D);
gl.bind_texture(glow::TEXTURE_2D, Some(textureID));
gl.tex_image_2d(glow::TEXTURE_2D, 0, format as i32, img.width() as i32, img.height() as i32,
0, format, glow::UNSIGNED_BYTE, Some(&data));
gl.generate_mipmap(glow::TEXTURE_2D);
gl::TexParameteri(gl::TEXTURE_2D, gl::TEXTURE_WRAP_S, gl::REPEAT as i32);
gl::TexParameteri(gl::TEXTURE_2D, gl::TEXTURE_WRAP_T, gl::REPEAT as i32);
gl::TexParameteri(gl::TEXTURE_2D, gl::TEXTURE_MIN_FILTER, gl::LINEAR_MIPMAP_LINEAR as i32);
gl::TexParameteri(gl::TEXTURE_2D, gl::TEXTURE_MAG_FILTER, gl::LINEAR as i32);
gl.tex_parameter_i32(glow::TEXTURE_2D, glow::TEXTURE_WRAP_S, glow::REPEAT as i32);
gl.tex_parameter_i32(glow::TEXTURE_2D, glow::TEXTURE_WRAP_T, glow::REPEAT as i32);
gl.tex_parameter_i32(glow::TEXTURE_2D, glow::TEXTURE_MIN_FILTER, glow::LINEAR_MIPMAP_LINEAR as i32);
gl.tex_parameter_i32(glow::TEXTURE_2D, glow::TEXTURE_MAG_FILTER, glow::LINEAR as i32);
textureID
}

96
src/model/mesh.rs
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@ -8,7 +8,7 @@ use std::ptr;
use cgmath::{ Vector3, Vector2 };
use cgmath::prelude::*;
use gl;
use glow::*;
use field_offset::offset_of;
use crate::shader::shader;
@ -43,7 +43,7 @@ impl Default for Vertex {
#[derive(Clone)]
pub struct Texture {
pub id: u32,
pub id: glow::NativeTexture,
pub type_: String,
pub path: String,
}
@ -53,22 +53,28 @@ pub struct Mesh {
pub vertices: Vec<Vertex>,
pub indices: Vec<u32>,
pub textures: Vec<Texture>,
pub VAO: u32,
pub VAO: glow::VertexArray,
/* Render data */
VBO: u32,
EBO: u32,
VBO: glow::Buffer,
EBO: glow::Buffer,
}
impl Mesh {
pub fn new(vertices: Vec<Vertex>, indices: Vec<u32>, textures: Vec<Texture>) -> Mesh {
pub fn new(vertices: Vec<Vertex>, indices: Vec<u32>, textures: Vec<Texture>,gl: std::rc::Rc<glow::Context>) -> Mesh {
let mut mesh =
{
unsafe {
let mut mesh = Mesh {
vertices, indices, textures,
VAO: 0, VBO: 0, EBO: 0
VAO: gl.create_vertex_array().unwrap(), VBO: gl.create_buffer().unwrap(), EBO: gl.create_buffer().unwrap()
};
mesh
}
};
// now that we have all the required data, set the vertex buffers and its attribute pointers.
unsafe { mesh.setupMesh() }
unsafe { mesh.setupMesh(gl) }
mesh
}
@ -80,7 +86,7 @@ impl Mesh {
let mut normalNr = 0;
let mut heightNr = 0;
for (i, texture) in self.textures.iter().enumerate() {
gl::ActiveTexture(gl::TEXTURE0 + i as u32); // active proper texture unit before binding
shader.gl.active_texture(glow::TEXTURE0 + i as u32); // active proper texture unit before binding
// retrieve texture number (the N in diffuse_textureN)
let name = &texture.type_;
let number = match name.as_str() {
@ -103,60 +109,66 @@ impl Mesh {
_ => panic!("unknown texture type")
};
// now set the sampler to the correct texture unit
let sampler = CString::new(format!("{}{}", name, number)).unwrap();
gl::Uniform1i(gl::GetUniformLocation(shader.ID, sampler.as_ptr()), i as i32);
let sampler = String::from(format!("{}{}", name, number));
shader.setInt(&sampler, i as i32);
// and finally bind the texture
gl::BindTexture(gl::TEXTURE_2D, texture.id);
shader.gl.bind_texture(glow::TEXTURE_2D, Some(texture.id));
}
// draw mesh
gl::BindVertexArray(self.VAO);
gl::DrawElements(gl::TRIANGLES, self.indices.len() as i32, gl::UNSIGNED_INT, ptr::null());
gl::BindVertexArray(0);
shader.gl.bind_vertex_array(Some(self.VAO));
shader.gl.draw_elements(glow::TRIANGLES, self.indices.len() as i32, glow::UNSIGNED_INT, 0);
shader.gl.bind_vertex_array(None);
// always good practice to set everything back to defaults once configured.
gl::ActiveTexture(gl::TEXTURE0);
shader.gl.active_texture(glow::TEXTURE0);
}
unsafe fn setupMesh(&mut self) {
unsafe fn setupMesh(&mut self, gl: std::rc::Rc<glow::Context>) {
// create buffers/arrays
gl::GenVertexArrays(1, &mut self.VAO);
gl::GenBuffers(1, &mut self.VBO);
gl::GenBuffers(1, &mut self.EBO);
gl::BindVertexArray(self.VAO);
gl.bind_vertex_array(Some(self.VAO));
// load data into vertex buffers
gl::BindBuffer(gl::ARRAY_BUFFER, self.VBO);
gl.bind_buffer(glow::ARRAY_BUFFER, Some(self.VBO));
// A great thing about structs with repr(C) is that their memory layout is sequential for all its items.
// The effect is that we can simply pass a pointer to the struct and it translates perfectly to a glm::vec3/2 array which
// again translates to 3/2 floats which translates to a byte array.
let size = (self.vertices.len() * size_of::<Vertex>()) as isize;
let data = &self.vertices[0] as *const Vertex as *const c_void;
gl::BufferData(gl::ARRAY_BUFFER, size, data, gl::STATIC_DRAW);
//let size = (self.vertices.len() * size_of::<Vertex>()) as isize;
//let data = &self.vertices[0] as *const Vertex as *const c_void;
let data: &[u8] = core::slice::from_raw_parts(
self.vertices.as_ptr() as *const u8,
self.vertices.len() * core::mem::size_of::<f32>(),
);
gl::BindBuffer(gl::ELEMENT_ARRAY_BUFFER, self.EBO);
let size = (self.indices.len() * size_of::<u32>()) as isize;
let data = &self.indices[0] as *const u32 as *const c_void;
gl::BufferData(gl::ELEMENT_ARRAY_BUFFER, size, data, gl::STATIC_DRAW);
gl.buffer_data_u8_slice(glow::ARRAY_BUFFER, data, glow::STATIC_DRAW);
gl.bind_buffer(glow::ELEMENT_ARRAY_BUFFER, Some(self.EBO));
let data: &[u8] = core::slice::from_raw_parts(
self.indices.as_ptr() as *const u8,
self.indices.len() * core::mem::size_of::<f32>(),
);
gl.buffer_data_u8_slice(glow::ELEMENT_ARRAY_BUFFER, data, glow::STATIC_DRAW);
// set the vertex attribute pointers
let size = size_of::<Vertex>() as i32;
// vertex Positions
gl::EnableVertexAttribArray(0);
gl::VertexAttribPointer(0, 3, gl::FLOAT, gl::FALSE, size, offset_of!(Vertex => Position).get_byte_offset() as *const c_void);
gl.enable_vertex_attrib_array(0);
gl.vertex_attrib_pointer_f32(0, 3, glow::FLOAT, false, size, offset_of!(Vertex => Position).get_byte_offset() as i32);
// vertex normals
gl::EnableVertexAttribArray(1);
gl::VertexAttribPointer(1, 3, gl::FLOAT, gl::FALSE, size, offset_of!(Vertex => Normal).get_byte_offset() as *const c_void);
gl.enable_vertex_attrib_array(1);
gl.vertex_attrib_pointer_f32(1, 3, glow::FLOAT, false, size, offset_of!(Vertex => Normal).get_byte_offset() as i32);
// vertex texture coords
gl::EnableVertexAttribArray(2);
gl::VertexAttribPointer(2, 2, gl::FLOAT, gl::FALSE, size, offset_of!(Vertex => TexCoords).get_byte_offset() as *const c_void);
gl.enable_vertex_attrib_array(2);
gl.vertex_attrib_pointer_f32(2, 2, glow::FLOAT, false, size, offset_of!(Vertex => TexCoords).get_byte_offset() as i32);
// vertex tangent
gl::EnableVertexAttribArray(3);
gl::VertexAttribPointer(3, 3, gl::FLOAT, gl::FALSE, size, offset_of!(Vertex => Tangent).get_byte_offset() as *const c_void);
gl.enable_vertex_attrib_array(3);
gl.vertex_attrib_pointer_f32(3, 3, glow::FLOAT, false, size, offset_of!(Vertex => Tangent).get_byte_offset() as i32);
// vertex bitangent
gl::EnableVertexAttribArray(4);
gl::VertexAttribPointer(4, 3, gl::FLOAT, gl::FALSE, size, offset_of!(Vertex => Bitangent).get_byte_offset() as *const c_void);
gl.enable_vertex_attrib_array(4);
gl.vertex_attrib_pointer_f32(4, 3, glow::FLOAT, false, size, offset_of!(Vertex => Bitangent).get_byte_offset() as i32);
gl::BindVertexArray(0);
gl.bind_vertex_array(None);
}
}

10
src/shader.rs
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@ -1,16 +1,14 @@
use glow::*;
use std::fs;
use std::ffi::{CString, CStr};
use std::rc::Rc;
use std::str;
use cgmath::prelude::*;
/// Shader Struct for creating and using shaders in the Context of engine
///
pub struct shader {
pub ID: NativeProgram,
gl: Rc<glow::Context>
pub gl: Rc<glow::Context>
}
@ -61,7 +59,7 @@ use cgmath::prelude::*;
shader {
ID: shader_program,
gl: Rc::clone(&gl),
};
}
}
}
@ -70,9 +68,9 @@ use cgmath::prelude::*;
// return program
/// uses Shader
pub fn Use(&self, gl: glow::Context)
pub fn Use(&self)
{
unsafe {gl.use_program(Some(self.ID));}
unsafe {self.gl.use_program(Some(self.ID));}
}
// BOILERPLATE JUMPSCARE