forked from mirror/vulkan-zig
Remove SPIR-V stuff
After experimenting somewhat, i realize this is gonna require more effort than i thought it was gonna be. This is probably also not the right repository for it.
This commit is contained in:
Robin Voetter
@@ -1,73 +0,0 @@
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const std = @import("std");
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const reg = @import("registry.zig");
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const renderSpirv = @import("render.zig").render;
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const Allocator = std.mem.Allocator;
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pub fn mergeRegistries(allocator: *Allocator, core: reg.CoreRegistry, extensions: []const reg.ExtensionRegistry) !reg.CoreRegistry {
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var merged = core;
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var total_instructions = core.instructions.len;
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var total_operand_kinds = core.operand_kinds.len;
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for (extensions) |ext| {
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total_instructions += ext.instructions.len;
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total_operand_kinds += ext.operand_kinds.len;
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}
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merged.instructions = try allocator.alloc(reg.Instruction, total_instructions);
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merged.operand_kinds = try allocator.alloc(reg.OperandKind, total_operand_kinds);
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// Assume the core and extension registries contain no common operand kinds and instructions.
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for (core.instructions) |inst, i| merged.instructions[i] = inst;
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for (core.operand_kinds) |operand_kind, i| merged.operand_kinds[i] = operand_kind;
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var inst_i = core.instructions.len;
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var oper_i = core.operand_kinds.len;
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for (extensions) |ext| {
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for (ext.instructions) |inst| {
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merged.instructions[inst_i] = inst;
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inst_i += 1;
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}
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for (ext.operand_kinds) |operand_kind| {
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merged.operand_kinds[oper_i] = operand_kind;
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oper_i += 1;
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}
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}
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return merged;
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}
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pub fn generate(allocator: *Allocator, spec_jsons: []const []const u8, writer: anytype) !void {
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var arena = std.heap.ArenaAllocator.init(allocator);
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defer arena.deinit();
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// Exactly one of the passed specs must be core - the others must be exensions.
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var core_registry: reg.CoreRegistry = undefined;
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const num_ext_registries = spec_jsons.len - 1;
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const ext_registries = try arena.allocator.alloc(reg.ExtensionRegistry, num_ext_registries);
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var ext_registry_i: usize = 0;
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for (spec_jsons) |spec_json| {
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var tokens = std.json.TokenStream.init(spec_json);
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const registry = try std.json.parse(reg.Registry, &tokens, .{.allocator = &arena.allocator});
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switch (registry) {
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.core => |parsed_core_registry| core_registry = parsed_core_registry,
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.extension => |parsed_ext_registry| {
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if (ext_registry_i == num_ext_registries) {
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return error.NoCoreRegistry;
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}
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ext_registries[ext_registry_i] = parsed_ext_registry;
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ext_registry_i += 1;
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},
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}
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}
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if (ext_registry_i != num_ext_registries) {
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return error.MultipleCoreRegistries;
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}
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const merged = try mergeRegistries(&arena.allocator, core_registry, ext_registries);
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try renderSpirv(writer, &arena.allocator, &merged);
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}
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@@ -1,71 +0,0 @@
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// See https://www.khronos.org/registry/spir-v/specs/unified1/MachineReadableGrammar.html
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pub const Registry = union(enum) {
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core: CoreRegistry,
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extension: ExtensionRegistry,
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};
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pub const CoreRegistry = struct {
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copyright: [][]const u8,
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magic_number: []const u8, // Hexadecimal representation of the magic number
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major_version: u32,
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minor_version: u32,
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revision: u32,
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instructions: []Instruction,
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operand_kinds: []OperandKind,
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};
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pub const ExtensionRegistry = struct {
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copyright: [][]const u8,
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version: u32,
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revision: u32,
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instructions: []Instruction,
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operand_kinds: []OperandKind = &[_]OperandKind{},
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};
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pub const Instruction = struct {
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opname: []const u8,
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opcode: u32,
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operands: []Operand = &[_]Operand{},
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capabilities: [][]const u8 = &[_][]const u8{},
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extensions: [][]const u8 = &[_][]const u8{},
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};
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pub const Operand = struct {
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kind: []const u8,
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/// Either
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/// - null: exactly once.
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/// - "?": zero or once.
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/// - "*": zero or more.
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quantifier: ?[]const u8 = null,
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name: []const u8 = "",
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};
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pub const OperandCategory = enum {
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// Note: non-canonical casing to match Spir-V JSON spec/
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BitEnum,
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ValueEnum,
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Id,
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Literal,
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Composite,
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};
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pub const OperandKind = struct {
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category: OperandCategory,
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kind: []const u8,
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doc: []const u8 = "",
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enumerants: ?[]Enumerant = null,
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bases: ?[]const []const u8 = null,
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};
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pub const Enumerant = struct {
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enumerant: []const u8,
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value: union(enum) {
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bitflag: []const u8, // Hexadecimal representation of the value
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int: u31,
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},
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capabilities: [][]const u8 = &[_][]const u8{},
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extensions: [][]const u8 = &[_][]const u8{}, // Valid for .ValueEnum
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parameters: []Operand = &[_]Operand{}, // `quantifier` will always be `null`.
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};
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@@ -1,69 +0,0 @@
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const std = @import("std");
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const reg = @import("registry.zig");
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const IdRenderer = @import("../id_render.zig").IdRenderer;
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const Allocator = std.mem.Allocator;
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// The SPIR-V spec doesn't contain any tag information like vulkan.xml does,
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// so the tags are just hardcoded. They are retrieved from
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// https://github.com/KhronosGroup/SPIRV-Registry/tree/master/extensions
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const tags = [_][]const u8{
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"AMD",
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"EXT",
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"GOOGLE",
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"INTEL",
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"KHR",
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"NV",
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};
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const preamble =
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\\
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\\ This file is generated from the SPIR-V JSON registry
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;
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fn stripOpPrefix(name: []const u8) []const u8 {
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// Some instructions (those from the core) are prefixed with 'Op'
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const prefix = "Op";
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return if (std.mem.startsWith(u8, name, prefix))
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name[prefix.len ..]
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else
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name;
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}
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fn Renderer(comptime WriterType: type) type {
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return struct {
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const Self = @This();
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writer: WriterType,
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registry: *const reg.CoreRegistry,
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id_renderer: IdRenderer,
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fn render(self: *Self) !void {
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for (self.registry.copyright) |line| {
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try self.writer.print("// {}\n", .{ line });
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}
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try self.writer.writeAll(preamble);
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try self.renderOpcodes();
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}
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fn renderOpcodes(self: *Self) !void {
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try self.writer.writeAll("pub const Opcode = enum(u16) {\n");
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for (self.registry.instructions) |instr| {
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try self.id_renderer.renderWithCase(self.writer, .snake, stripOpPrefix(instr.opname));
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try self.writer.print(" = {},\n", .{ instr.opcode });
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}
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try self.writer.writeAll("};\n");
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}
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};
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}
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pub fn render(writer: anytype, allocator: *Allocator, registry: *const reg.CoreRegistry) !void {
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const id_renderer = IdRenderer.init(allocator, &tags);
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defer id_renderer.deinit();
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var renderer = Renderer(@TypeOf(writer)) {
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.writer = writer,
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.registry = registry,
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.id_renderer = id_renderer,
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};
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try renderer.render();
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}
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