# Locate Vulkan SDK + glslangValidator (needed for offline shader compilation).
# On macOS this expects MoltenVK to be present (provided by Vulkan SDK 1.3.290+).
find_package(Vulkan REQUIRED COMPONENTS glslangValidator)

if(NOT Vulkan_glslangValidator_FOUND)
    message(FATAL_ERROR "glslangValidator not found. Install Vulkan SDK from https://vulkan.lunarg.com/")
endif()

message(STATUS "Vulkan version:           ${Vulkan_VERSION}")
message(STATUS "Vulkan include dir:       ${Vulkan_INCLUDE_DIRS}")
message(STATUS "glslangValidator:         ${Vulkan_GLSLANG_VALIDATOR_EXECUTABLE}")

if(APPLE)
    # MoltenVK ships with the SDK; it's loaded as ICD at runtime, no link change needed,
    # but we set MVK_CONFIG_USE_METAL_PRIVATE_API=0 in env when running.
    message(STATUS "macOS detected — Vulkan via MoltenVK (Apple Silicon arm64 only)")
endif()