#!/bin/sh

# Shave and a Haircut
# (c) 2019 Epic Games
# US Patent 6720962

maya=$1

if [ "${maya}" = "" ]; then
    echo "Usage: $0 mayaVersion" >&2
    echo ""
    exit 1
fi

if [ "${SHAVE_ARNOLD_SDKS}" = "" ]; then
    echo "SHAVE_ARNOLD_SDKS not defined. Shave will be built without Arnold support." >&2
    exit 3
fi

gpp=`../utils/getg++.sh ${maya}`

if [ "${gpp}" = "" ]; then
    echo "Could not find correct version of g++ for Maya ${maya}." >&2
    echo ""
    exit 2
fi

if [ -d Release/${maya} ]; then
    rm -rf Release/${maya}
fi

grep "^${maya}:" supportedMtoAVersions.txt | while read mayaVer minVer maxVer buildVer garbage; do
    mtoaMin=${minVer/\/*/}
    arnoldMin=${minVer/*\//}

    mtoaMax=${maxVer/\/*/}
    arnoldMax=${maxVer/*\//}

    mtoaBuild=${buildVer/\/*/}
    arnoldBuild=${buildVer/*\//}

    safeMtoABuild=${mtoaBuild//./_}
    safeArnoldBuild=${arnoldBuild//./_}

    arnoldPath=${SHAVE_ARNOLD_SDKS}/arnold/${arnoldBuild}/linux
    mtoaPath=${SHAVE_ARNOLD_SDKS}/mtoa/${mtoaBuild}/maya${maya}/linux

    CPPFLAGS="-fvisibility=hidden -Wno-reorder -Wall -Wsign-compare -O3 -funroll-loops -fPIC \
            -DENABLE_COLOR_MANAGEMENT -DNDEBUG -DENABLE_XGEN -DENABLE_VP2 -DENABLE_BIFROST -DENABLE_LOOKDEVKIT -DENABLE_RENDERSETUP \
            -D_LINUX -Dnullptr=0 \
            -I${arnoldPath}/include"

    if [ `echo "${maya} >= 2018" | bc` == 1 ]; then
        CPPFLAGS+=" -std=c++0x"
    fi

    PLUGIN_CPPFLAGS="${CPPFLAGS} -D_BOOL -DREQUIRE_IOSTREAM \
            -Iplugin \
            -I../mayaPlug \
            -I${mtoaPath}/include \
            -I/usr/autodesk/maya${maya}/include"

    LDFLAGS="-fvisibility=hidden -z origin -shared \
            -L${arnoldPath}/bin \
            -lGL -lpthread \
            -lai"

    PLUGIN_LDFLAGS="${LDFLAGS} \
            -L${mtoaPath}/lib \
            -L../mayaPlug \
            -L/usr/autodesk/maya${maya}/lib \
            -lFoundation -lOpenMaya -lOpenMayaRender -lOpenMayaUI -lOpenMayaAnim -lOpenMayaFX \
            -lmtoa_api -lShaveAPI"

    OUTDIR=Release/${maya}/${mtoaBuild}

    mkdir -p ${OUTDIR}

    ${gpp} ${PLUGIN_CPPFLAGS} -o ${OUTDIR}/plugin.o -c plugin/plugin.cpp
    ${gpp} ${PLUGIN_CPPFLAGS} -o ${OUTDIR}/ShaveAndHaircut.o -c plugin/ShaveAndHaircut.cpp
    ${gpp} ${PLUGIN_LDFLAGS} -o ${OUTDIR}/shave.so ${OUTDIR}/plugin.o ${OUTDIR}/ShaveAndHaircut.o

    ${gpp} ${CPPFLAGS} -o ${OUTDIR}/ShaveHair.o -c shaders/ShaveHair.cpp

    # We may have several versions of the shader for a given version of
    # MtoA, so we have to differentiate them.
    #
    ${gpp} ${LDFLAGS} -o ${OUTDIR}/shave_shaders-${safeArnoldBuild}.so ${OUTDIR}/ShaveHair.o
done