mirror of https://github.com/sotrh/learn-wgpu
migrated windowless
Ben Hansen
3 years ago
parent
b4dd4654e4
commit
7094e5dd91
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[package]
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name = "instancing"
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version = "0.1.0"
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authors = ["Ben Hansen <bhbenjaminhansen@gmail.com>"]
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edition = "2018"
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[dependencies]
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anyhow = "1.0"
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bytemuck = { version = "1.4", features = [ "derive" ] }
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cgmath = "0.17"
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env_logger = "0.7"
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futures = "0.3"
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image = "0.23"
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log = "0.4"
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tobj = "2.0"
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wgpu = "0.7"
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winit = "0.22"
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[build-dependencies]
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anyhow = "1.0"
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fs_extra = "1.2"
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glob = "0.3"
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shaderc = "0.7"
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use anyhow::*;
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use fs_extra::copy_items;
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use fs_extra::dir::CopyOptions;
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use glob::glob;
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use std::env;
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use std::fs::{read_to_string, write};
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use std::path::PathBuf;
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struct ShaderData {
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src: String,
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src_path: PathBuf,
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spv_path: PathBuf,
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kind: shaderc::ShaderKind,
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}
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impl ShaderData {
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pub fn load(src_path: PathBuf) -> Result<Self> {
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let extension = src_path
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.extension()
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.context("File has no extension")?
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.to_str()
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.context("Extension cannot be converted to &str")?;
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let kind = match extension {
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"vert" => shaderc::ShaderKind::Vertex,
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"frag" => shaderc::ShaderKind::Fragment,
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"comp" => shaderc::ShaderKind::Compute,
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_ => bail!("Unsupported shader: {}", src_path.display()),
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};
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let src = read_to_string(src_path.clone())?;
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let spv_path = src_path.with_extension(format!("{}.spv", extension));
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Ok(Self {
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src,
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src_path,
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spv_path,
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kind,
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})
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}
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}
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fn main() -> Result<()> {
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// Collect all shaders recursively within /src/
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let mut shader_paths = [
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glob("./src/**/*.vert")?,
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glob("./src/**/*.frag")?,
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glob("./src/**/*.comp")?,
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];
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// This could be parallelized
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let shaders = shader_paths
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.iter_mut()
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.flatten()
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.map(|glob_result| ShaderData::load(glob_result?))
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.collect::<Vec<Result<_>>>()
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.into_iter()
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.collect::<Result<Vec<_>>>()?;
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let mut compiler = shaderc::Compiler::new().context("Unable to create shader compiler")?;
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// This can't be parallelized. The [shaderc::Compiler] is not
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// thread safe. Also, it creates a lot of resources. You could
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// spawn multiple processes to handle this, but it would probably
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// be better just to only compile shaders that have been changed
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// recently.
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for shader in shaders {
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// This tells cargo to rerun this script if something in /src/ changes.
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println!(
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"cargo:rerun-if-changed={}",
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shader.src_path.as_os_str().to_str().unwrap()
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);
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let compiled = compiler.compile_into_spirv(
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&shader.src,
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shader.kind,
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&shader.src_path.to_str().unwrap(),
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"main",
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None,
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)?;
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write(shader.spv_path, compiled.as_binary_u8())?;
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}
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// This tells cargo to rerun this script if something in /res/ changes.
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println!("cargo:rerun-if-changed=res/*");
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let out_dir = env::var("OUT_DIR")?;
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let mut copy_options = CopyOptions::new();
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copy_options.overwrite = true;
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let mut paths_to_copy = Vec::new();
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paths_to_copy.push("res/");
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match copy_items(&paths_to_copy, out_dir, ©_options) {
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Ok(_) => {}
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Err(e) => println!("{}", e),
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}
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Ok(())
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}
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# Blender MTL File: 'cube.blend'
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# Material Count: 1
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newmtl Material.001
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Ns 323.999994
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Ka 1.000000 1.000000 1.000000
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Kd 0.800000 0.800000 0.800000
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Ks 0.500000 0.500000 0.500000
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Ke 0.000000 0.000000 0.000000
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Ni 1.450000
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d 1.000000
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illum 2
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map_Bump cube-normal.png
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map_Kd cube-diffuse.jpg
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#version 450
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layout(location=0) in vec3 v_color;
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layout(location=0) out vec4 f_color;
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void main() {
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f_color = vec4(v_color, 1.0);
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}
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#version 450
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layout(location=0) in vec3 a_position;
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layout(location=0) out vec3 v_color;
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layout(set=0, binding=0)
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uniform Uniforms {
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vec3 u_view_position;
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mat4 u_view_proj;
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};
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layout(set=1, binding=0)
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uniform Light {
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vec3 u_position;
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vec3 u_color;
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};
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// Let's keep our light smaller than our other objects
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float scale = 0.25;
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void main() {
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vec3 v_position = a_position * scale + u_position;
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gl_Position = u_view_proj * vec4(v_position, 1);
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v_color = u_color;
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}
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#version 450
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layout(location=0) in vec2 v_tex_coords;
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layout(location=1) in vec3 v_position; // UPDATED!
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layout(location=2) in vec3 v_light_position; // NEW!
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layout(location=3) in vec3 v_view_position; // NEW!
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layout(location=0) out vec4 f_color;
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layout(set = 0, binding = 0) uniform texture2D t_diffuse;
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layout(set = 0, binding = 1) uniform sampler s_diffuse;
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layout(set = 0, binding = 2) uniform texture2D t_normal;
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layout(set = 0, binding = 3) uniform sampler s_normal;
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layout(set = 2, binding = 0) uniform Light {
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vec3 light_position;
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vec3 light_color;
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};
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void main() {
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vec4 object_color = texture(sampler2D(t_diffuse, s_diffuse), v_tex_coords);
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vec4 object_normal = texture(sampler2D(t_normal, s_normal), v_tex_coords);
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float ambient_strength = 0.1;
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vec3 ambient_color = light_color * ambient_strength;
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vec3 normal = normalize(object_normal.rgb * 2.0 - 1.0); // UPDATED!
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vec3 light_dir = normalize(v_light_position - v_position); // UPDATED!
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float diffuse_strength = max(dot(normal, light_dir), 0.0);
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vec3 diffuse_color = light_color * diffuse_strength;
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vec3 view_dir = normalize(v_view_position - v_position); // UPDATED!
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vec3 half_dir = normalize(view_dir + light_dir);
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float specular_strength = pow(max(dot(normal, half_dir), 0.0), 32);
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vec3 specular_color = specular_strength * light_color;
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vec3 result = (ambient_color + diffuse_color + specular_color) * object_color.xyz;
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f_color = vec4(result, object_color.a);
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}
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#version 450
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layout(location=0) in vec3 a_position;
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layout(location=1) in vec2 a_tex_coords;
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layout(location=2) in vec3 a_normal;
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layout(location=3) in vec3 a_tangent;
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layout(location=4) in vec3 a_bitangent;
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layout(location=0) out vec2 v_tex_coords;
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layout(location=1) out vec3 v_position;
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layout(location=2) out vec3 v_light_position;
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layout(location=3) out vec3 v_view_position;
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layout(set=0, binding=0)
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uniform Uniforms {
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vec3 u_view_position;
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mat4 u_view_proj;
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};
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layout(location=5) in vec4 model_matrix_0;
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layout(location=6) in vec4 model_matrix_1;
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layout(location=7) in vec4 model_matrix_2;
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layout(location=8) in vec4 model_matrix_3;
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// NEW!
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layout(set=1, binding=0) uniform Light {
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vec3 light_position;
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vec3 light_color;
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};
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void main() {
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v_tex_coords = a_tex_coords;
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mat3 normal_matrix = mat3(transpose(inverse(model_matrix)));
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vec3 normal = normalize(normal_matrix * a_normal);
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vec3 tangent = normalize(normal_matrix * a_tangent);
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vec3 bitangent = normalize(normal_matrix * a_bitangent);
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// UDPATED!
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mat3 tangent_matrix = transpose(mat3(
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tangent,
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bitangent,
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normal
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));
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vec4 model_space = model_matrix * vec4(a_position, 1.0);
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v_position = model_space.xyz;
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// NEW!
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v_position = tangent_matrix * model_space.xyz;
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v_light_position = tangent_matrix * light_position;
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v_view_position = tangent_matrix * u_view_position;
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gl_Position = u_view_proj * model_space;
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}
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