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spirv: opaque types

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This commit is contained in:
Robin Voetter 2023-09-23 01:31:07 +02:00
parent a241cf90d6
commit 4e22f811e7
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2 changed files with 32 additions and 0 deletions
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7
src/codegen/spirv.zig
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@ -1215,6 +1215,13 @@ pub const DeclGen = struct {
try self.type_map.put(self.gpa, ty.toIntern(), .{ .ty_ref = ty_ref });
return ty_ref;
},
.Opaque => {
return try self.spv.resolve(.{
.opaque_type = .{
.name = .none, // TODO
},
});
},
.Null,
.Undefined,

25
src/codegen/spirv/Cache.zig
View File

@ -81,6 +81,9 @@ const Tag = enum {
/// have member names trailing.
/// data is payload to SimpleStructType
type_struct_simple_with_member_names,
/// Opaque type.
/// data is name string.
type_opaque,
// -- Values
/// Value of type u8
@ -235,6 +238,7 @@ pub const Key = union(enum) {
function_type: FunctionType,
ptr_type: PointerType,
struct_type: StructType,
opaque_type: OpaqueType,
// -- values
int: Int,
@ -289,6 +293,10 @@ pub const Key = union(enum) {
}
};
pub const OpaqueType = struct {
name: String = .none,
};
pub const Int = struct {
/// The type: any bitness integer.
ty: Ref,
@ -539,6 +547,13 @@ fn emit(
}
// TODO: Decorations?
},
.opaque_type => |opaque_type| {
const name = if (self.getString(opaque_type.name)) |name| name else "";
try section.emit(spv.gpa, .OpTypeOpaque, .{
.id_result = result_id,
.literal_string = name,
});
},
.int => |int| {
const int_type = self.lookup(int.ty).int_type;
const ty_id = self.resultId(int.ty);
@ -697,6 +712,11 @@ pub fn resolve(self: *Self, spv: *Module, key: Key) !Ref {
};
}
},
.opaque_type => |opaque_type| Item{
.tag = .type_opaque,
.result_id = result_id,
.data = @intFromEnum(opaque_type.name),
},
.int => |int| blk: {
const int_type = self.lookup(int.ty).int_type;
if (int_type.signedness == .unsigned and int_type.bits == 8) {
@ -874,6 +894,11 @@ pub fn lookup(self: *const Self, ref: Ref) Key {
},
};
},
.type_opaque => .{
.opaque_type = .{
.name = @as(String, @enumFromInt(data)),
},
},
.float16 => .{ .float = .{
.ty = self.get(.{ .float_type = .{ .bits = 16 } }),
.value = .{ .float16 = @as(f16, @bitCast(@as(u16, @intCast(data)))) },