66 lines
2.4 KiB
Bash
Executable File
66 lines
2.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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if [[ $# -lt 3 || $# -gt 4 ]]; then
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echo "Usage: $0 <project-root> <probe-guid> <source.hdr|exr|png> [resolution]" >&2
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exit 2
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fi
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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ENGINE_ROOT="$(cd "${SCRIPT_DIR}/.." && pwd)"
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PROJECT_ROOT="$(cd "$1" && pwd)"
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PROBE_GUID="$2"
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SOURCE_PATH="$3"
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RESOLUTION="${4:-256}"
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if [[ "${SOURCE_PATH}" != /* ]]; then
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SOURCE_PATH="${PROJECT_ROOT}/${SOURCE_PATH}"
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fi
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if [[ ! -f "${SOURCE_PATH}" ]]; then
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echo "Reflection probe source does not exist: ${SOURCE_PATH}" >&2
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exit 3
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fi
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if [[ ! "${PROBE_GUID}" =~ ^[0-9a-fA-F]{32}$ ]]; then
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echo "Reflection probe GUID must contain exactly 32 hexadecimal digits." >&2
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exit 4
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fi
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case "${RESOLUTION}" in
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16|32|64|128|256|512|1024|2048) ;;
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*) echo "Resolution must be a power of two between 16 and 2048." >&2; exit 5 ;;
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esac
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CMGEN="${METACORE_FILAMENT_CMGEN:-${ENGINE_ROOT}/build/filament-host-tools/install/bin/cmgen}"
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if [[ ! -x "${CMGEN}" ]]; then
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echo "A runnable cmgen was not found at ${CMGEN}; run tools/build_filament_host_tools.sh first." >&2
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exit 6
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fi
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OUTPUT_ROOT="${PROJECT_ROOT}/Library/DerivedData/Rendering/Probes/${PROBE_GUID}"
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TEMP_ROOT="$(mktemp -d "${PROJECT_ROOT}/Library/DerivedData/Rendering/.probe-${PROBE_GUID}.XXXXXX")"
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cleanup() { rm -rf "${TEMP_ROOT}"; }
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trap cleanup EXIT
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"${CMGEN}" --quiet --format=ktx --size="${RESOLUTION}" --deploy="${TEMP_ROOT}" "${SOURCE_PATH}"
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SOURCE_STEM="$(basename "${SOURCE_PATH}")"
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SOURCE_STEM="${SOURCE_STEM%.*}"
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IBL_SOURCE="${TEMP_ROOT}/${SOURCE_STEM}_ibl.ktx"
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SKYBOX_SOURCE="${TEMP_ROOT}/${SOURCE_STEM}_skybox.ktx"
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if [[ ! -s "${IBL_SOURCE}" || ! -s "${SKYBOX_SOURCE}" ]]; then
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echo "cmgen did not produce the expected IBL and skybox KTX files." >&2
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exit 7
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fi
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mkdir -p "${OUTPUT_ROOT}"
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install -m 0644 "${IBL_SOURCE}" "${OUTPUT_ROOT}/probe_ibl.ktx"
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install -m 0644 "${SKYBOX_SOURCE}" "${OUTPUT_ROOT}/probe_skybox.ktx"
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if [[ -s "${TEMP_ROOT}/sh.txt" ]]; then
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install -m 0644 "${TEMP_ROOT}/sh.txt" "${OUTPUT_ROOT}/sh.txt"
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fi
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SOURCE_HASH="$(sha256sum "${SOURCE_PATH}" | cut -d' ' -f1)"
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HEADER_TEMP="${TEMP_ROOT}/probe.mcrprobe"
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printf 'MCRPROBE 1 %s "%s" "%s" "%s"\n' \
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"${PROBE_GUID}" "${SOURCE_HASH}" "probe_ibl.ktx" "probe_skybox.ktx" > "${HEADER_TEMP}"
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install -m 0644 "${HEADER_TEMP}" "${OUTPUT_ROOT}/probe.mcrprobe"
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echo "Reflection probe baked: ${OUTPUT_ROOT}"
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