# Xenoblade Chronicles X diagnostic native runtime. Self-contained: the Horizon host (runtime/), the rewriter (third_party/d2r), the NVN-on-Metal
# layer (third_party/d2r_gfx), the shader translator (prebuilt/) and the scripts are this folder's own copies, forked from
# an independently copied host; nothing here reads another game directory. Everything generated goes to the work folder.
# Inputs come from scripts/extract_exefs.py, scripts/extract_romfs.py and the rewrite (see README.md), then:
#   make prepare   # scripts/prepare_runtime.py: tables, RomFS index, fonts config
#   make runtime   # XCX_build/build/xcx-native
#   make boot      # run it from the work folder (cwd: extracted/ and rewritten/ are read relative to it)

# opus and libvpx come from the repository's tools/deps: made once per Mac from pinned sources (no Homebrew).
# make runs here (games/<game>); set a *_PREFIX to use another build.
OPUS_PREFIX ?= $(or $(shell python3 ../../tools/deps prefix opus),$(error tools/deps could not make opus))
VPX_PREFIX ?= $(or $(shell python3 ../../tools/deps prefix libvpx),$(error tools/deps could not make libvpx))

WORK ?= $(error Set WORK to an absolute directory outside the source checkout)
OUT := $(WORK)/build
PY ?= python3
NATIVE_OPT ?= -O2
VERSION ?= 1.0.0
GAME_DIR := v$(subst .,,$(VERSION))
MACOS_MIN := -mmacosx-version-min=26.0

GFX_SRC := $(wildcard third_party/d2r_gfx/gfx/nvn/*.c third_party/d2r_gfx/gfx/nvn/*.m third_party/d2r_gfx/gfx/nvn/*.S third_party/d2r_gfx/gfx/tex/*.c third_party/d2r_gfx/gfx/tex/*.m)
GFX_OBJECTS := $(patsubst %,$(OUT)/obj/%.o,$(GFX_SRC))
GFX_HEADERS := $(wildcard third_party/d2r_gfx/gfx/nvn/*.h third_party/d2r_gfx/gfx/nvn/include/*.h third_party/d2r_gfx/host/*.h)
GFX_FLAGS := -std=gnu11 -Wno-error -Wno-unused-function -Wno-unused-parameter -fobjc-arc -Ithird_party/d2r_gfx/gfx/nvn/include

RUNTIME_SRC := $(filter-out runtime/frontend_ios.m,$(wildcard runtime/*.c runtime/*.m runtime/*.S))
RUNTIME_HEADERS := $(wildcard runtime/*.h)
GENERATED := $(OUT)/runtime_tables.h $(OUT)/romfs_config.h $(OUT)/shared_fonts_config.h $(OUT)/xcx_version_config.h

.PHONY: prepare runtime boot clean
prepare: check-paths
	"$(PY)" scripts/prepare_runtime.py --work "$(WORK)" --version "$(VERSION)"

$(GENERATED):
	@echo "missing $@: run make prepare" && false

$(OUT)/obj/%.o: % $(GFX_HEADERS) Makefile | check-paths
	@mkdir -p "$(dir $@)"
	xcrun clang $(MACOS_MIN) $(NATIVE_OPT) -g -Wall -Wextra $(GFX_FLAGS) -c "$<" -o "$@"

$(OUT)/xcx-native: $(RUNTIME_SRC) $(RUNTIME_HEADERS) $(GENERATED) $(GFX_OBJECTS) Makefile
	xcrun clang $(MACOS_MIN) -std=c11 $(NATIVE_OPT) -g -Wall -Wextra -Werror -Wno-deprecated-declarations \
	  -Ithird_party/d2r_gfx/gfx/nvn/include -I$(OUT) -I$(OPUS_PREFIX)/include/opus -I$(VPX_PREFIX)/include \
	  $(RUNTIME_SRC) $(GFX_OBJECTS) $(OPUS_PREFIX)/lib/libopus.a $(VPX_PREFIX)/lib/libvpx.a \
	  -framework Metal -framework MetalFX -framework Foundation -framework QuartzCore -framework ImageIO -framework CoreGraphics \
	  -framework CoreText -framework UniformTypeIdentifiers -fobjc-arc -framework Cocoa -framework CoreVideo -framework CoreFoundation \
	  -framework AudioToolbox -framework GameController -framework CoreHaptics -framework IOKit -o "$@"

runtime: $(OUT)/xcx-native

# The runtime shader translation the graphics layer starts on first use: <work>/build/shader-service/totk_xlate (the
# repository's prebuilt NativeAOT translator, checked against its SHA-256) and <work>/build/spirv-cross/spirv-cross,
# built like build_app.py does (same pinned commit, sources and flags as SPIRV-Cross's CMake Release build).
SPIRV_CROSS_COMMIT := aa217aeb6c9f0ace7a0ab233b28807edf45eb165
SPIRV_CROSS_SOURCES := main.cpp spirv_cfg.cpp spirv_cpp.cpp spirv_cross.cpp spirv_cross_parsed_ir.cpp spirv_cross_util.cpp \
  spirv_glsl.cpp spirv_hlsl.cpp spirv_msl.cpp spirv_parser.cpp spirv_reflect.cpp
.PHONY: shader-tools
shader-tools: $(OUT)/shader-service/totk_xlate $(OUT)/spirv-cross/spirv-cross
$(OUT)/shader-service/totk_xlate: prebuilt/macos-arm64/totk_xlate prebuilt/macos-arm64/totk_xlate.sha256 | check-paths
	@mkdir -p "$(dir $@)"
	test "$$(shasum -a 256 "$<" | cut -d' ' -f1)" = "$$(cut -d' ' -f1 "prebuilt/macos-arm64/totk_xlate.sha256")"
	cp "$<" "$@" && chmod +x "$@"
$(OUT)/spirv-cross/spirv-cross: | check-paths
	@mkdir -p "$(WORK)/src" "$(dir $@)obj"
	test -d "$(WORK)/src/SPIRV-Cross" || git clone -q https://github.com/KhronosGroup/SPIRV-Cross.git "$(WORK)/src/SPIRV-Cross"
	git -C "$(WORK)/src/SPIRV-Cross" checkout -q $(SPIRV_CROSS_COMMIT)
	for f in $(SPIRV_CROSS_SOURCES); do xcrun clang++ -O3 -DNDEBUG -std=c++11 -arch arm64 -Wno-deprecated-declarations \
	  -c "$(WORK)/src/SPIRV-Cross/$$f" -o "$(dir $@)obj/$$f.o" & done; wait
	xcrun clang++ -arch arm64 $(addprefix $(dir $@)obj/,$(addsuffix .o,$(SPIRV_CROSS_SOURCES))) -o "$@"

# XCX_LOG: where the boot's stderr goes (the host is loud on purpose; every abort names what is missing).
XCX_LOG ?= $(WORK)/logs/boot.log
boot: runtime
	@mkdir -p "$(dir $(XCX_LOG))"
	cd "$(WORK)" && TOTK_HEADLESS=$${TOTK_HEADLESS-} ./build/xcx-native rewritten/$(GAME_DIR) boot 2> "$(abspath $(XCX_LOG))"; status=$$?; echo "exit $$status; log: $(XCX_LOG)"; exit $$status


# Diagnostic bundle; game data stays at WORK, and this is not a redistributable game package.
APP ?= $(WORK)/Xenoblade Chronicles X Experiment.app
APP_EXTENDED_VA ?= 0
APP_GPU_SUBMIT ?= 0
.PHONY: app
app: runtime
	"$(PY)" scripts/package_app.py --work "$(WORK)" --output "$(APP)" $(if $(filter 1,$(APP_EXTENDED_VA)),--extended-va) $(if $(filter 1,$(APP_GPU_SUBMIT)),--gpu-submit)

.PHONY: check-paths
check-paths:
	"$(PY)" scripts/xcx_artifact_paths.py "$(WORK)" "$(APP)"

.PHONY: graphics
graphics: $(GFX_OBJECTS)
