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-rw-r--r--engine/src/shader.rs186
1 files changed, 0 insertions, 186 deletions
diff --git a/engine/src/shader.rs b/engine/src/shader.rs
deleted file mode 100644
index 89f7b7c..0000000
--- a/engine/src/shader.rs
+++ /dev/null
@@ -1,186 +0,0 @@
-use std::collections::hash_map::DefaultHasher;
-use std::fs::read_to_string;
-use std::hash::{Hash, Hasher};
-use std::path::{Path, PathBuf};
-
-use ecs::Component;
-
-use crate::shader_preprocessor::{Error as ShaderPreprocessorError, ShaderPreprocessor};
-
-const VERTEX_SHADER_FILE: &str = "vertex.glsl";
-const FRAGMENT_SHADER_FILE: &str = "fragment.glsl";
-
-const SHADER_DIR: &str = "engine";
-
-/// Shader program
-#[derive(Debug, Clone, PartialEq, Eq, Hash, Default, Component)]
-pub struct Program
-{
- shaders: Vec<Shader>,
-}
-
-impl Program
-{
- /// Creates a new shader program with the default shaders.
- ///
- /// # Errors
- /// Returns `Err` if:
- /// - Reading a default shader file Fails
- /// - Preprocessing a shader fails.
- pub fn new() -> Result<Self, Error>
- {
- let mut program = Self { shaders: Vec::new() };
-
- program.push_shader(
- Shader::read_shader_file(
- Kind::Vertex,
- &Path::new(SHADER_DIR).join(VERTEX_SHADER_FILE),
- )?
- .preprocess()?,
- );
-
- program.push_shader(
- Shader::read_shader_file(
- Kind::Fragment,
- &Path::new(SHADER_DIR).join(FRAGMENT_SHADER_FILE),
- )?
- .preprocess()?,
- );
-
- Ok(program)
- }
-
- pub fn push_shader(&mut self, shader: Shader)
- {
- self.shaders.push(shader);
- }
-
- pub fn append_shaders(&mut self, shaders: impl IntoIterator<Item = Shader>)
- {
- self.shaders.extend(shaders);
- }
-
- #[must_use]
- pub fn shaders(&self) -> &[Shader]
- {
- &self.shaders
- }
-
- pub(crate) fn u64_hash(&self) -> u64
- {
- let mut hasher = DefaultHasher::new();
-
- self.hash(&mut hasher);
-
- hasher.finish()
- }
-}
-
-#[derive(Debug, Clone, Hash, PartialEq, Eq)]
-pub struct Shader
-{
- kind: Kind,
- source: String,
- file: PathBuf,
-}
-
-impl Shader
-{
- /// Reads a shader from the specified source file.
- ///
- /// # Errors
- /// Will return `Err` if:
- /// - Reading the file fails
- /// - The shader source is not ASCII
- pub fn read_shader_file(kind: Kind, shader_file: &Path) -> Result<Self, Error>
- {
- let source = read_to_string(shader_file).map_err(|err| Error::ReadFailed {
- source: err,
- shader_file: shader_file.to_path_buf(),
- })?;
-
- if !source.is_ascii() {
- return Err(Error::SourceNotAscii);
- }
-
- Ok(Self {
- kind,
- source,
- file: shader_file.to_path_buf(),
- })
- }
-
- /// Preprocesses the shaders.
- ///
- /// # Errors
- /// Returns `Err` if preprocessing fails.
- pub fn preprocess(self) -> Result<Self, Error>
- {
- let shader_preprocessor = ShaderPreprocessor::new(
- self.file
- .parent()
- .ok_or(Error::SourcePathHasNoParent)?
- .to_path_buf(),
- );
-
- let source_preprocessed = shader_preprocessor
- .preprocess(self.source, &self.file)
- .map_err(|err| Error::PreprocessFailed {
- source: err,
- shader_file: self.file.clone(),
- })?;
-
- Ok(Self {
- kind: self.kind,
- source: source_preprocessed,
- file: self.file.clone(),
- })
- }
-
- #[must_use]
- pub fn kind(&self) -> Kind
- {
- self.kind
- }
-
- #[must_use]
- pub fn source(&self) -> &str
- {
- &self.source
- }
-}
-
-/// Shader kind.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-pub enum Kind
-{
- Vertex,
- Fragment,
-}
-
-/// Shader error
-#[derive(Debug, thiserror::Error)]
-pub enum Error
-{
- #[error("Failed to read shader {}", shader_file.display())]
- ReadFailed
- {
- #[source]
- source: std::io::Error,
- shader_file: PathBuf,
- },
-
- #[error("Shader source is not ASCII")]
- SourceNotAscii,
-
- #[error("Failed to preprocess shader {}", shader_file.display())]
- PreprocessFailed
- {
- #[source]
- source: ShaderPreprocessorError,
- shader_file: PathBuf,
- },
-
- #[error("Shader source path has no parent")]
- SourcePathHasNoParent,
-}