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build.rs
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build.rs
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extern crate bindgen;
use regex::Regex;
use std::env;
use std::path::PathBuf;
const D3D12_AGILITY_SDK_INCLUDE_PATH: &str = "extern\\D3D12AgilitySDK\\include";
const D3D12_AGILITY_SDK_LIB_PATH: &str = "extern\\D3D12AgilitySDK\\bin";
#[cfg(feature = "pix")]
const PIX_INCLUDE_PATH: &str = "extern\\WinPixEventRuntime\\include";
#[cfg(feature = "pix")]
const PIX_LIB_PATH: &str = "extern\\WinPixEventRuntime\\bin";
fn find_d3d12_header() -> Option<String> {
let path = PathBuf::from(D3D12_AGILITY_SDK_INCLUDE_PATH)
.join("d3d12.h")
.to_str()
.expect("Path to Agility SDK is not valid UTF-8")
.to_owned();
eprintln!("Trying to find d3d12.h at {}", path);
Some(path)
}
fn patch_d3d12_header() -> String {
let d3d12_contents = std::fs::read_to_string(
find_d3d12_header().expect("Cannot find d3d12.h"),
)
.expect("Something went wrong reading d3d12.h");
let cpu_regex = Regex::new(concat!(
r"(D3D12_CPU_DESCRIPTOR_HANDLE\s*",
r"\(\s*STDMETHODCALLTYPE\s*\*GetCPUDescriptorHandleForHeapStart\s*\)",
r"\(\s*ID3D12DescriptorHeap\s*\*\s*This\);)"
))
.unwrap();
let patched_contents = cpu_regex.replace_all(
&d3d12_contents,
concat!(
"void(STDMETHODCALLTYPE *GetCPUDescriptorHandleForHeapStart)",
"(\n\tID3D12DescriptorHeap *This, ",
"D3D12_CPU_DESCRIPTOR_HANDLE* pHandle);"
),
);
let gpu_regex = Regex::new(concat!(
r"(D3D12_GPU_DESCRIPTOR_HANDLE\s*",
r"\(\s*STDMETHODCALLTYPE\s*\*GetGPUDescriptorHandleForHeapStart\s*\)",
r"\(\s*ID3D12DescriptorHeap\s*\*\s*This\);)"
))
.unwrap();
let patched_contents = gpu_regex.replace_all(
&patched_contents,
concat!(
"void(STDMETHODCALLTYPE *GetGPUDescriptorHandleForHeapStart)",
"(\n\tID3D12DescriptorHeap *This, ",
"D3D12_GPU_DESCRIPTOR_HANDLE* pHandle);"
),
);
let resource_desc_regex = Regex::new(concat!(
r"(D3D12_RESOURCE_DESC\s*",
r"\(\s*STDMETHODCALLTYPE\s*\*GetDesc\s*\)",
r"\(\s*ID3D12Resource\s*\*\s*This\);)"
))
.unwrap();
let patched_contents = resource_desc_regex.replace_all(
&patched_contents,
concat!(
"void(STDMETHODCALLTYPE *GetDesc)",
"(\n\tID3D12Resource *This, ",
"D3D12_RESOURCE_DESC* pHandle);"
),
);
let resource_desc1_regex = Regex::new(concat!(
r"(D3D12_RESOURCE_DESC1\s*",
r"\(\s*STDMETHODCALLTYPE\s*\*GetDesc1\s*\)",
r"\(\s*ID3D12Resource2\s*\*\s*This\);)"
))
.unwrap();
resource_desc1_regex
.replace_all(
&patched_contents,
concat!(
"void(STDMETHODCALLTYPE *GetDesc1)",
"(\n\tID3D12Resource2 *This, ",
"D3D12_RESOURCE_DESC1* pHandle);"
),
)
.to_string()
}
fn main() {
let workspace_dir = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap());
println!(
"cargo:rustc-link-search={}",
workspace_dir
.join(D3D12_AGILITY_SDK_LIB_PATH)
.to_str()
.unwrap()
);
println!("cargo:rustc-link-lib=d3d12");
println!("cargo:rustc-link-lib=dxgi");
// we have no __uuidof, so let's use oldschool way
println!("cargo:rustc-link-lib=dxguid");
println!(
"cargo:rustc-link-arg=/DEF:{}\\agility.def",
workspace_dir
.join(D3D12_AGILITY_SDK_LIB_PATH)
.to_str()
.unwrap()
);
#[cfg(feature = "devel")]
generate_bindings();
// PIX support is disabled by default not to introduce a dependency for WinPixEventRuntime.dll
#[cfg(feature = "pix")]
{
// Our PIX wrapper has an extra layer - C wrapper around the original C++ interface
// Since without `devel` feature we cannot run bindgen and build it, we have to ship
// the pre-built library
println!(
"cargo:rustc-link-search={}",
workspace_dir.join(PIX_LIB_PATH).to_str().unwrap()
);
println!("cargo:rustc-link-lib=static=pix_wrapper");
println!("cargo:rustc-link-lib=WinPixEventRuntime");
}
// Copy DX12 Agility SDK libs that are needed by examples
let copy_source_path = workspace_dir.join(D3D12_AGILITY_SDK_LIB_PATH);
let profile = env::var("PROFILE").unwrap();
let examples_bin_path =
workspace_dir.join("target").join(profile).join("examples");
let copy_dest_path = examples_bin_path.join("D3D12");
std::fs::create_dir_all(©_dest_path).unwrap_or_else(|err| {
eprintln!(
"Cannot create D3D12 dir to copy Agility SDK dlls: {:?}",
err
);
});
let files_to_copy = [
"D3D12Core.dll",
"D3D12Core.pdb",
"d3d12SDKLayers.dll",
"d3d12SDKLayers.pdb",
];
for file in files_to_copy {
std::fs::copy(copy_source_path.join(file), copy_dest_path.join(file))
.unwrap_or_else(|err| {
eprintln!("cannot copy Agility SDK dlls: {:?}", err);
0
});
}
#[cfg(feature = "pix")]
{
// Copy PIX runtime DLL since it's needed by examples
let pix_dll_name = "WinPixEventRuntime.dll";
std::fs::copy(
&format!("{}\\{}", PIX_LIB_PATH, pix_dll_name),
examples_bin_path.join(pix_dll_name),
)
.unwrap_or_else(|err| {
eprintln!("cannot copy {}: {:?}", pix_dll_name, err);
0
});
// Copy PIX libs to OUT dir
let pix_wrapper_lib_name = "pix_wrapper.lib";
let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
// dll
std::fs::copy(
&format!("{}\\{}", PIX_LIB_PATH, pix_dll_name),
out_path.join(pix_dll_name),
)
.unwrap_or_else(|err| {
eprintln!("cannot copy {}: {:?}", pix_dll_name, err);
0
});
// static wrapper lib
std::fs::copy(
&format!("{}\\{}", PIX_LIB_PATH, pix_wrapper_lib_name),
out_path.join(pix_wrapper_lib_name),
)
.unwrap_or_else(|err| {
eprintln!("cannot copy {}: {:?}", pix_wrapper_lib_name, err);
0
});
}
}
#[cfg(feature = "devel")]
fn generate_bindings() {
// Tell cargo to invalidate the built crate whenever the wrapper changes
println!("cargo:rerun-if-changed=generation\\d3d12_wrapper.h");
let bindings = bindgen::Builder::default()
.clang_arg("-std=c99")
.clang_arg("-DD3D12_IGNORE_SDK_LAYERS")
.header("generation\\d3d12_wrapper.h")
.header_contents("d3d12_patched.h", &patch_d3d12_header())
.layout_tests(false)
.derive_debug(true)
.impl_debug(true)
.derive_default(true)
.derive_eq(true)
.derive_partialeq(true)
.impl_partialeq(true)
.derive_hash(true)
.derive_ord(true)
// DXGI and D3D types, vars and functions
.allowlist_type(".*DXGI.*")
.allowlist_type(".*D3D12.*")
.allowlist_var(".*DXGI.*")
.allowlist_var(".*D3D12.*")
.allowlist_var(".*IID_.*")
.allowlist_var(".*WKPDID_.*")
.allowlist_function(".*DXGI.*")
.allowlist_function(".*D3D12.*")
.allowlist_function("Enum.*")
.allowlist_function("CopyBufferRegion")
// WinAPI functions from <synchapi.h>
.allowlist_function("CreateEventW")
.allowlist_function("WaitForSingleObject")
.allowlist_function("CloseHandle")
.parse_callbacks(Box::new(bindgen::CargoCallbacks))
// Finish the builder and generate the bindings.
.generate()
.expect("Unable to generate bindings");
let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
bindings
.write_to_file(out_path.join("d3d12_bindings.rs"))
.expect("Cannot write bindings");
generate_pix_bindings();
}
#[cfg(feature = "devel")]
fn generate_pix_bindings() {
let workspace_dir = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap());
// Build C wrapper over C++ PIX header
cc::Build::new()
.cpp(true)
.include(workspace_dir.join(PIX_INCLUDE_PATH))
.include(workspace_dir.join(D3D12_AGILITY_SDK_INCLUDE_PATH))
.include(workspace_dir.join("generation"))
.file(workspace_dir.join("generation").join("pix_wrapper.cpp"))
.compile("pix_wrapper");
// Generate Rust bindings to C wrapper
println!(
"cargo:rerun-if-changed={}\\generation\\pix_wrapper.h",
workspace_dir.to_str().unwrap()
);
println!(
"cargo:rerun-if-changed={}\\generation\\pix_wrapper.cpp",
workspace_dir.to_str().unwrap()
);
let bindings = bindgen::Builder::default()
.layout_tests(false)
.clang_arg(&format!(
"-I{}",
workspace_dir
.join(D3D12_AGILITY_SDK_INCLUDE_PATH)
.to_str()
.unwrap()
))
.clang_arg(&format!(
"-I{}",
workspace_dir.join(PIX_INCLUDE_PATH).to_str().unwrap()
))
.header(&format!(
"{}\\generation\\pix_wrapper.h",
workspace_dir.to_str().unwrap()
))
.allowlist_function("pix_.*")
.allowlist_type("ID3D12GraphicsCommandList.*")
.allowlist_type("ID3D12CommandQueue.*")
.parse_callbacks(Box::new(bindgen::CargoCallbacks))
.generate()
.expect("Unable to generate bindings");
let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
bindings
.write_to_file(out_path.join("pix_bindings.rs"))
.expect("Couldn't write bindings");
}