#!/usr/bin/env python

Import("env")
Import("env_modules")

env_raycast = env_modules.Clone()

# Thirdparty source files

thirdparty_obj = []

if env["builtin_embree"]:
    thirdparty_dir = "#thirdparty/embree/"

    embree_src = [
        "common/sys/sysinfo.cpp",
        "common/sys/alloc.cpp",
        "common/sys/filename.cpp",
        "common/sys/library.cpp",
        "common/sys/thread.cpp",
        "common/sys/string.cpp",
        "common/sys/regression.cpp",
        "common/sys/mutex.cpp",
        "common/sys/condition.cpp",
        "common/sys/barrier.cpp",
        "common/math/constants.cpp",
        "common/simd/sse.cpp",
        "common/lexers/stringstream.cpp",
        "common/lexers/tokenstream.cpp",
        "common/tasking/taskschedulerinternal.cpp",
        "kernels/common/device.cpp",
        "kernels/common/stat.cpp",
        "kernels/common/acceln.cpp",
        "kernels/common/accelset.cpp",
        "kernels/common/state.cpp",
        "kernels/common/rtcore.cpp",
        "kernels/common/rtcore_builder.cpp",
        "kernels/common/scene.cpp",
        "kernels/common/alloc.cpp",
        "kernels/common/geometry.cpp",
        "kernels/common/scene_triangle_mesh.cpp",
        "kernels/geometry/primitive4.cpp",
        "kernels/builders/primrefgen.cpp",
        "kernels/bvh/bvh.cpp",
        "kernels/bvh/bvh_statistics.cpp",
        "kernels/bvh/bvh4_factory.cpp",
        "kernels/bvh/bvh8_factory.cpp",
        "kernels/bvh/bvh_collider.cpp",
        "kernels/bvh/bvh_rotate.cpp",
        "kernels/bvh/bvh_refit.cpp",
        "kernels/bvh/bvh_builder.cpp",
        "kernels/bvh/bvh_builder_morton.cpp",
        "kernels/bvh/bvh_builder_sah.cpp",
        "kernels/bvh/bvh_builder_sah_spatial.cpp",
        "kernels/bvh/bvh_builder_sah_mb.cpp",
        "kernels/bvh/bvh_builder_twolevel.cpp",
        "kernels/bvh/bvh_intersector1_bvh4.cpp",
        "kernels/bvh/bvh_intersector_hybrid4_bvh4.cpp",
        "kernels/bvh/bvh_intersector_stream_bvh4.cpp",
        "kernels/bvh/bvh_intersector_stream_filters.cpp",
    ]

    thirdparty_sources = [thirdparty_dir + file for file in embree_src]

    env_raycast.Prepend(CPPPATH=[thirdparty_dir, thirdparty_dir + "include"])
    env_raycast.Append(CPPDEFINES=["EMBREE_TARGET_SSE2", "EMBREE_LOWEST_ISA", "TASKING_INTERNAL"])
    env_raycast.AppendUnique(CPPDEFINES=["NDEBUG"])  # No assert() even in debug builds.

    if not env.msvc:
        if env["arch"] in ["x86", "x86_64"]:
            env_raycast.Append(CPPFLAGS=["-msse2", "-mxsave"])

        if env["platform"] == "windows":
            env_raycast.Append(CPPFLAGS=["-mstackrealign"])

    if env["platform"] == "windows":
        if env.msvc:
            env.Append(LINKFLAGS=["psapi.lib"])
        else:
            env.Append(LIBS=["psapi"])

    env_thirdparty = env_raycast.Clone()
    env_thirdparty.force_optimization_on_debug()
    env_thirdparty.disable_warnings()
    env_thirdparty.add_source_files(thirdparty_obj, thirdparty_sources)

    if not env["arch"] in ["x86", "x86_64"] or env.msvc:
        # Embree needs those, it will automatically use SSE2NEON in ARM
        env_thirdparty.Append(CPPDEFINES=["__SSE2__", "__SSE__"])

    if not env.msvc:
        # Flags synced with upstream gnu.cmake.
        env_thirdparty.Append(
            CPPFLAGS=[
                "-fno-strict-overflow",
                "-fno-delete-null-pointer-checks",
                "-fwrapv",
                "-fsigned-char",
                "-fno-strict-aliasing",
                "-fno-tree-vectorize",
                "-fvisibility=hidden",
                "-fvisibility-inlines-hidden",
            ]
        )

    env.modules_sources += thirdparty_obj


# Godot source files

module_obj = []

env_raycast.add_source_files(module_obj, "*.cpp")
env.modules_sources += module_obj

# Needed to force rebuilding the module files when the thirdparty library is updated.
env.Depends(module_obj, thirdparty_obj)