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Shader compilation utility

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This commit is contained in:
Robin Voetter
2020-07-04 04:18:56 +02:00
parent e9f286a5d4
commit 72917ccdb3
3 changed files with 68 additions and 7 deletions
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14
generator/vulkan/build-integration.zig
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@@ -10,16 +10,17 @@ pub const GenerateStep = struct {
spec_path: []const u8,
full_out_path: []const u8,
// relative_out_path is relative to builder.cache_root
pub fn init(builder: *Builder, spec_path: []const u8, relative_out_path: []const u8) *GenerateStep {
// out_path is relative to builder.cache_root
pub fn init(builder: *Builder, spec_path: []const u8, out_path: []const u8) *GenerateStep {
const self = builder.allocator.create(GenerateStep) catch unreachable;
self.* = .{
.step = Step.init(.Custom, "vulkan-generate", builder.allocator, make),
.builder = builder,
.spec_path = spec_path,
.full_out_path = path.join(builder.allocator, &[_][]const u8{
self.builder.build_root,
builder.cache_root,
relative_out_path,
out_path,
}) catch unreachable,
};
return self;
@@ -28,16 +29,15 @@ pub const GenerateStep = struct {
fn make(step: *Step) !void {
const self = @fieldParentPtr(GenerateStep, "step", step);
const cwd = std.fs.cwd();
var out_buffer = std.ArrayList(u8).init(self.builder.allocator);
const spec = try std.fs.cwd().readFileAlloc(self.builder.allocator, self.spec_path, std.math.maxInt(usize));
const spec = try cwd.readFileAlloc(self.builder.allocator, self.spec_path, std.math.maxInt(usize));
try generate(self.builder.allocator, spec, out_buffer.writer());
const tree = try std.zig.parse(self.builder.allocator, out_buffer.items);
const dir = path.dirname(self.full_out_path).?;
try std.fs.cwd().makePath(dir);
const output_file = std.fs.cwd().createFile(self.full_out_path, .{}) catch unreachable;
try cwd.makePath(dir);
const output_file = cwd.createFile(self.full_out_path, .{}) catch unreachable;
_ = try std.zig.render(self.builder.allocator, output_file.outStream(), tree);
}
};