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package main
import "core:fmt"
import "core:mem"
import "core:os"
import "core:strings"
import shader "../../shader"
Scratch_Scope :: struct {
arena: mem.Dynamic_Arena,
old_allocator: mem.Allocator,
old_temp_allocator: mem.Allocator,
}
scratch_begin :: proc(scope: ^Scratch_Scope) {
scope.old_allocator = context.allocator
scope.old_temp_allocator = context.temp_allocator
mem.dynamic_arena_init(&scope.arena, context.allocator, context.allocator, alignment = 64)
allocator := mem.dynamic_arena_allocator(&scope.arena)
context.allocator = allocator
context.temp_allocator = allocator
}
scratch_end :: proc(scope: ^Scratch_Scope) {
context.allocator = scope.old_allocator
context.temp_allocator = scope.old_temp_allocator
mem.dynamic_arena_destroy(&scope.arena)
scope^ = {}
}
main :: proc() {
args := os.args[1:]
if len(args) == 0 {
print_usage()
os.exit(1)
}
command := args[0]
rest := args[1:]
switch command {
case "compile":
cmd_compile(rest)
case "check":
cmd_check(rest)
case "dump-ast":
cmd_dump_ast(rest)
case "dump-ir":
cmd_dump_ir(rest)
case "reflect":
cmd_reflect(rest)
case "help", "--help", "-h":
print_usage()
case:
fmt.eprintfln("unknown command: %s", command)
print_usage()
os.exit(1)
}
}
cmd_compile :: proc(args: []string) {
input_file := ""
output_file := ""
target := shader.Target.GLSL_450
include_dirs := make([dynamic]string)
debug := false
entry := ""
i := 0
for i < len(args) {
arg := args[i]
if arg == "-o" && i + 1 < len(args) {
i += 1
output_file = args[i]
} else if arg == "--debug" {
debug = true
} else if strings.has_prefix(arg, "--entry=") {
entry = arg[len("--entry="):]
} else if strings.has_prefix(arg, "--target=") {
target_str := arg[len("--target="):]
switch target_str {
case "glsl": target = .GLSL_450
case "glsl-opengl": target = .GLSL_450_OPENGL
case "hlsl": target = .HLSL_SM6
case "msl": target = .MSL_2_4
case "wgsl": target = .WGSL
case "spirv": target = .SPIR_V
case "dxbc": target = .DXBC_SM5
case:
fmt.eprintfln("unknown target: %s", target_str)
os.exit(1)
}
} else if strings.has_prefix(arg, "--include-dir=") {
append(&include_dirs, arg[len("--include-dir="):])
} else if len(arg) > 0 && arg[0] != '-' {
input_file = arg
} else {
fmt.eprintfln("unknown option: %s", arg)
os.exit(1)
}
i += 1
}
if input_file == "" {
fmt.eprintln("error: no input file specified")
os.exit(1)
}
source_data, read_err := os.read_entire_file(input_file, context.allocator)
if read_err != nil {
fmt.eprintfln("error: could not read file: %s", input_file)
os.exit(1)
}
source := string(source_data)
defer delete(source_data)
options := shader.Compile_Options{
target = target,
include_dirs = include_dirs[:],
debug = debug,
entry = entry,
}
result := shader.compile(source, options, input_file)
defer shader.destroy_compile_result(&result)
// Print diagnostics
for d in result.diagnostics {
msg := shader.format_diagnostic_with_source(d, source)
fmt.eprintln(msg)
delete(msg)
}
if !result.success {
os.exit(1)
}
if output_file != "" {
ok := os.write_entire_file(output_file, result.output)
if ok != nil {
fmt.eprintfln("error: could not write file: %s", output_file)
os.exit(1)
}
fmt.printfln("wrote %s", output_file)
} else {
fmt.print(string(result.output))
}
}
cmd_check :: proc(args: []string) {
input_file := ""
include_dirs := make([dynamic]string)
for arg in args {
if strings.has_prefix(arg, "--include-dir=") {
append(&include_dirs, arg[len("--include-dir="):])
} else if len(arg) > 0 && arg[0] != '-' {
input_file = arg
}
}
if input_file == "" {
fmt.eprintln("error: no input file specified")
os.exit(1)
}
source_data, read_err := os.read_entire_file(input_file, context.allocator)
if read_err != nil {
fmt.eprintfln("error: could not read file: %s", input_file)
os.exit(1)
}
source := string(source_data)
defer delete(source_data)
scratch: Scratch_Scope
scratch_begin(&scratch)
defer scratch_end(&scratch)
_, _, diags := shader.compile_check(source, input_file)
has_errors := false
for d in diags {
fmt.eprintln(shader.format_diagnostic_with_source(d, source))
if d.level == .Error do has_errors = true
}
if has_errors {
os.exit(1)
} else {
fmt.printfln("%s: ok", input_file)
}
}
cmd_dump_ast :: proc(args: []string) {
input_file := ""
for arg in args {
if len(arg) > 0 && arg[0] != '-' {
input_file = arg
}
}
if input_file == "" {
fmt.eprintln("error: no input file specified")
os.exit(1)
}
source_data, read_err := os.read_entire_file(input_file, context.allocator)
if read_err != nil {
fmt.eprintfln("error: could not read file: %s", input_file)
os.exit(1)
}
source := string(source_data)
defer delete(source_data)
scratch: Scratch_Scope
scratch_begin(&scratch)
defer scratch_end(&scratch)
mod, diags := shader.compile_dump_ast(source, input_file)
has_errors := false
for d in diags {
fmt.eprintln(shader.format_diagnostic_with_source(d, source))
if d.level == .Error do has_errors = true
}
if has_errors do os.exit(1)
fmt.print(shader.ast_to_string(mod))
}
cmd_dump_ir :: proc(args: []string) {
input_file := ""
for arg in args {
if len(arg) > 0 && arg[0] != '-' {
input_file = arg
}
}
if input_file == "" {
fmt.eprintln("error: no input file specified")
os.exit(1)
}
source_data, read_err := os.read_entire_file(input_file, context.allocator)
if read_err != nil {
fmt.eprintfln("error: could not read file: %s", input_file)
os.exit(1)
}
source := string(source_data)
defer delete(source_data)
scratch: Scratch_Scope
scratch_begin(&scratch)
defer scratch_end(&scratch)
ir_module, diags := shader.compile_lower(source, input_file)
has_errors := false
for d in diags {
fmt.eprintln(shader.format_diagnostic_with_source(d, source))
if d.level == .Error do has_errors = true
}
if has_errors do os.exit(1)
fmt.print(shader.ir_to_string(&ir_module))
}
cmd_reflect :: proc(args: []string) {
input_file := ""
spirv_mode := false
for arg in args {
if arg == "--spirv" {
spirv_mode = true
} else if len(arg) > 0 && arg[0] != '-' {
input_file = arg
}
}
if input_file == "" {
fmt.eprintln("error: no input file specified")
os.exit(1)
}
source_data, read_err := os.read_entire_file(input_file, context.allocator)
if read_err != nil {
fmt.eprintfln("error: could not read file: %s", input_file)
os.exit(1)
}
source := string(source_data)
defer delete(source_data)
if spirv_mode {
scratch: Scratch_Scope
scratch_begin(&scratch)
defer scratch_end(&scratch)
info, diags := shader.compile_reflect_spirv(source, input_file)
has_errors := false
for d in diags {
fmt.eprintln(shader.format_diagnostic_with_source(d, source))
if d.level == .Error do has_errors = true
}
if has_errors do os.exit(1)
fmt.print(shader.reflect_spirv_to_json(info))
} else {
scratch: Scratch_Scope
scratch_begin(&scratch)
defer scratch_end(&scratch)
info, diags := shader.compile_reflect(source, input_file)
has_errors := false
for d in diags {
fmt.eprintln(shader.format_diagnostic_with_source(d, source))
if d.level == .Error do has_errors = true
}
if has_errors do os.exit(1)
fmt.print(shader.reflect_to_json(info))
}
}
print_usage :: proc() {
fmt.println("Usage: luma <command> [options] <file>")
fmt.println("")
fmt.println("Commands:")
fmt.println(" compile Compile a .luma shader file")
fmt.println(" check Parse and typecheck only")
fmt.println(" dump-ast Dump abstract syntax tree")
fmt.println(" dump-ir Dump intermediate representation")
fmt.println(" reflect Emit binding reflection JSON")
fmt.println(" help Show this help message")
fmt.println("")
fmt.println("Compile options:")
fmt.println(" --target=<target> Output target: glsl, hlsl, msl, wgsl, spirv, dxbc (default: glsl)")
fmt.println(" --include-dir=<path> Add include search path")
fmt.println(" --entry=<name> Emit only the named entry point (default: all)")
fmt.println(" --debug Emit debug info (SPIR-V: OpLine/OpSource)")
fmt.println(" -o <file> Output file (default: stdout)")
fmt.println("")
fmt.println("Reflect options:")
fmt.println(" --spirv Emit SPIR-V-specific reflection (descriptor sets, layout)")
}