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gpu-dawn: utilize binary release by default

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2022-02-11 18:17:32 -07:00 • committed by Stephen Gutekanst
parent df61d34811
commit bd749af96e
1 changed files with 18 additions and 12 deletions
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30
gpu-dawn/build.zig
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@ -75,6 +75,10 @@ pub const Options = struct {
/// iteration times when building from source / testing changes to Dawn source code.)
separate_libs: bool = false,
/// The binary release version to use from https://github.com/hexops/mach-gpu-dawn/releases
/// If null, Dawn will be built from source.
binary_version: ?[]const u8 = "release-2e5a4eb",
/// Detects the default options to use for the given target.
pub fn detectDefaults(self: Options, target: std.Target) Options {
const tag = target.os.tag;
@ -106,10 +110,7 @@ pub fn link(b: *Builder, step: *std.build.LibExeObjStep, options: Options) void
ensureSubmodules(b.allocator) catch |err| @panic(@errorName(err));
// TODO(build-system): add flag to link from source
// TODO(build-system): default to binary releases
// linkFromBinary(b, step, opt);
linkFromSource(b, step, opt);
if (options.binary_version != null) linkFromBinary(b, step, opt) else linkFromSource(b, step, opt);
}
fn linkFromSource(b: *Builder, step: *std.build.LibExeObjStep, options: Options) void {
@ -190,7 +191,7 @@ pub fn linkFromBinary(b: *Builder, step: *std.build.LibExeObjStep, options: Opti
};
return linkFromSource(b, step, options);
};
ensureBinaryDownloaded(b.allocator, triple);
ensureBinaryDownloaded(b.allocator, triple, options.binary_version.?);
const current_git_commit = getCurrentGitCommit(b.allocator) catch unreachable;
const base_cache_dir_rel = std.fs.path.join(b.allocator, &.{ "zig-cache", "mach", "gpu-dawn" }) catch unreachable;
@ -203,10 +204,6 @@ pub fn linkFromBinary(b: *Builder, step: *std.build.LibExeObjStep, options: Opti
step.linkSystemLibrary("dawn");
step.linkLibCpp();
// TODO: remove this!
const tmp = std.fs.cwd().realpathAlloc(b.allocator, "zig-out/lib") catch unreachable;
step.addLibraryPath(tmp);
if (options.linux_window_manager != null and options.linux_window_manager.? == .X11) {
step.linkSystemLibrary("X11");
}
@ -220,7 +217,7 @@ pub fn linkFromBinary(b: *Builder, step: *std.build.LibExeObjStep, options: Opti
}
}
pub fn ensureBinaryDownloaded(allocator: std.mem.Allocator, triple: []const u8) void {
pub fn ensureBinaryDownloaded(allocator: std.mem.Allocator, triple: []const u8, version: []const u8) void {
// If zig-cache/mach/gpu-dawn/<git revision> does not exist:
// If on a commit in the main branch => rm -r zig-cache/mach/gpu-dawn/
// else => noop
@ -253,9 +250,18 @@ pub fn ensureBinaryDownloaded(allocator: std.mem.Allocator, triple: []const u8)
const download_dir = std.fs.path.join(allocator, &.{ target_cache_dir, "download" }) catch unreachable;
std.fs.cwd().makePath(download_dir) catch unreachable;
// TODO: replace URL with a release build from mach-gpu-dawn once CI is building it!
// Compose the download URL, e.g.:
// https://github.com/hexops/mach-gpu-dawn/releases/download/release-2e5a4eb/libdawn_x86_64-macos.a.gz
const download_url = std.mem.concat(allocator, u8, &.{
"https://github.com/hexops/mach-gpu-dawn/releases/download/",
version,
"/libdawn_",
triple,
".a.gz",
}) catch unreachable;
const gz_target_file = std.fs.path.join(allocator, &.{ download_dir, "compressed.gz" }) catch unreachable;
downloadFile(allocator, gz_target_file, "https://github.com/microsoft/DirectXShaderCompiler/archive/refs/tags/v1.6.2112.tar.gz") catch unreachable;
downloadFile(allocator, gz_target_file, download_url) catch unreachable;
const target_file = std.fs.path.join(allocator, &.{ target_cache_dir, "libdawn.a" }) catch unreachable;
gzipDecompress(allocator, gz_target_file, target_file) catch unreachable;