58 lines
1.9 KiB
Rust
58 lines
1.9 KiB
Rust
use {
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crate::open,
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anyhow::{Context, anyhow, bail},
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shaderc::{CompileOptions, ResolvedInclude},
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std::{io::Write, path::Path},
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};
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const ROOT: &str = "src/gfx_apis/vulkan/shaders";
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pub fn main() -> anyhow::Result<()> {
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println!("cargo:rerun-if-changed={}", ROOT);
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compile_simple("fill.frag")?;
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compile_simple("fill.vert")?;
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compile_simple("tex.vert")?;
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compile_simple("tex.frag")?;
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compile_simple("out.vert")?;
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compile_simple("out.frag")?;
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compile_simple("legacy/fill.frag")?;
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compile_simple("legacy/fill.vert")?;
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compile_simple("legacy/tex.vert")?;
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compile_simple("legacy/tex.frag")?;
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Ok(())
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}
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fn compile_simple(name: &str) -> anyhow::Result<()> {
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let out = format!("{name}.spv").replace("/", "_");
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compile_shader(name, &out).with_context(|| name.to_string())
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}
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fn compile_shader(name: &str, out: &str) -> anyhow::Result<()> {
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let root = Path::new(ROOT).join(Path::new(name).parent().unwrap());
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let read = |path: &str| std::fs::read_to_string(root.join(path));
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let mut options = CompileOptions::new().unwrap();
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options.set_include_callback(|name, _, _, _| {
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Ok(ResolvedInclude {
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resolved_name: name.to_string(),
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content: read(name).map_err(|e| anyhow!(e).to_string())?,
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})
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});
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let stage = match Path::new(name)
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.extension()
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.and_then(|e| e.to_str())
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.unwrap_or("")
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{
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"frag" => shaderc::ShaderKind::Fragment,
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"vert" => shaderc::ShaderKind::Vertex,
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n => bail!("Unknown shader stage {}", n),
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};
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let src = std::fs::read_to_string(format!("{}/{}", ROOT, name))?;
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let compiler = shaderc::Compiler::new().unwrap();
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let binary = compiler
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.compile_into_spirv(&src, stage, name, "main", Some(&options))
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.unwrap();
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let mut file = open(out)?;
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file.write_all(binary.as_binary_u8())?;
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file.flush()?;
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Ok(())
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}
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