forked from mirror/vulkan-zig
77 lines
2.8 KiB
Zig
77 lines
2.8 KiB
Zig
const std = @import("std");
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const vkgen = @import("generator/index.zig");
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const Step = std.build.Step;
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const Builder = std.build.Builder;
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const path = std.fs.path;
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pub const ResourceGenStep = struct {
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step: Step,
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shader_step: *vkgen.ShaderCompileStep,
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builder: *Builder,
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full_out_path: []const u8,
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resources: std.ArrayList(u8),
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pub fn init(builder: *Builder, out: []const u8) *ResourceGenStep {
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const self = builder.allocator.create(ResourceGenStep) catch unreachable;
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self.* = .{
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.step = Step.init(.Custom, "resources", builder.allocator, make),
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.shader_step = vkgen.ShaderCompileStep.init(builder, &[_][]const u8{"glslc", "--target-env=vulkan1.2"}),
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.builder = builder,
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.full_out_path = path.join(builder.allocator, &[_][]const u8{
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self.builder.build_root,
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builder.cache_root,
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out,
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}) catch unreachable,
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.resources = std.ArrayList(u8).init(builder.allocator),
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};
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self.step.dependOn(&self.shader_step.step);
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return self;
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}
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pub fn addShader(self: *ResourceGenStep, name: []const u8, source: []const u8) void {
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self.resources.writer().print(
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"pub const {} = @embedFile(\"{}\");\n",
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.{name, self.shader_step.add(source)}
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) catch unreachable;
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}
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fn make(step: *Step) !void {
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const self = @fieldParentPtr(ResourceGenStep, "step", step);
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const cwd = std.fs.cwd();
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const dir = path.dirname(self.full_out_path).?;
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try cwd.makePath(dir);
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try cwd.writeFile(self.full_out_path, self.resources.items);
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}
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};
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pub fn build(b: *Builder) void {
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var test_step = b.step("test", "Run all the tests");
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test_step.dependOn(&b.addTest("generator/index.zig").step);
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const target = b.standardTargetOptions(.{});
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const mode = b.standardReleaseOptions();
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const example_exe = b.addExecutable("example", "examples/main.zig");
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example_exe.setTarget(target);
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example_exe.setBuildMode(mode);
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example_exe.install();
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example_exe.linkSystemLibrary("c");
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example_exe.linkSystemLibrary("glfw");
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const gen = vkgen.VkGenerateStep.init(b, "examples/vk.xml", "vk.zig");
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example_exe.step.dependOn(&gen.step);
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example_exe.addPackagePath("vulkan", gen.full_out_path);
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const res = ResourceGenStep.init(b, "resources.zig");
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res.addShader("triangle_vert", "examples/shaders/triangle.vert");
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res.addShader("triangle_frag", "examples/shaders/triangle.frag");
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example_exe.step.dependOn(&res.step);
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example_exe.addPackagePath("resources", res.full_out_path);
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const example_run_cmd = example_exe.run();
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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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