82 lines
3.1 KiB
Zig
82 lines
3.1 KiB
Zig
const std = @import("std");
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pub fn build(b: *std.Build) !void {
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const optimize = b.standardOptimizeOption(.{});
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const target = b.standardTargetOptions(.{});
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const glfw = @import("libs/mach-glfw/build.zig");
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const gpu_dawn = @import("libs/mach-gpu-dawn/build.zig");
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const gpu = Sdk(.{
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.gpu_dawn = gpu_dawn,
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});
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const gpu_dawn_options = gpu_dawn.Options{
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.from_source = b.option(bool, "dawn-from-source", "Build Dawn from source") orelse false,
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.debug = b.option(bool, "dawn-debug", "Use a debug build of Dawn") orelse false,
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};
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const test_step = b.step("test", "Run library tests");
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test_step.dependOn(&(try gpu.testStep(b, optimize, target, .{ .gpu_dawn_options = gpu_dawn_options })).step);
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const example = b.addExecutable(.{
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.name = "gpu-hello-triangle",
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.root_source_file = .{ .path = "examples/main.zig" },
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.target = target,
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.optimize = optimize,
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});
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example.addModule("gpu", gpu.module(b));
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example.addModule("glfw", glfw.module(b));
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try gpu.link(b, example, .{ .gpu_dawn_options = gpu_dawn_options });
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try glfw.link(b, example, .{});
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b.installArtifact(example);
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const example_run_cmd = b.addRunArtifact(example);
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example_run_cmd.step.dependOn(b.getInstallStep());
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const example_run_step = b.step("run-example", "Run the example");
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example_run_step.dependOn(&example_run_cmd.step);
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}
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pub fn Sdk(comptime deps: anytype) type {
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return struct {
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pub fn testStep(b: *std.Build, optimize: std.builtin.OptimizeMode, target: std.zig.CrossTarget, options: Options) !*std.build.RunStep {
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const main_tests = b.addTest(.{
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.name = "gpu-tests",
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.root_source_file = .{ .path = sdkPath("/src/main.zig") },
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.target = target,
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.optimize = optimize,
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});
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try link(b, main_tests, options);
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b.installArtifact(main_tests);
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return b.addRunArtifact(main_tests);
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}
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pub const Options = struct {
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gpu_dawn_options: deps.gpu_dawn.Options = .{},
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};
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var _module: ?*std.build.Module = null;
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pub fn module(b: *std.Build) *std.build.Module {
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if (_module) |m| return m;
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_module = b.createModule(.{
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.source_file = .{ .path = sdkPath("/src/main.zig") },
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});
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return _module.?;
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}
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pub fn link(b: *std.Build, step: *std.build.CompileStep, options: Options) !void {
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if (step.target.toTarget().cpu.arch != .wasm32) {
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try deps.gpu_dawn.link(b, step, options.gpu_dawn_options);
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step.addCSourceFile(sdkPath("/src/mach_dawn.cpp"), &.{"-std=c++17"});
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step.addIncludePath(sdkPath("/src"));
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}
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}
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fn sdkPath(comptime suffix: []const u8) []const u8 {
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if (suffix[0] != '/') @compileError("suffix must be an absolute path");
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return comptime blk: {
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const root_dir = std.fs.path.dirname(@src().file) orelse ".";
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break :blk root_dir ++ suffix;
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};
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}
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};
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}
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