Code which specified the opengl target but did not schedule any Funcs glsl would fail due to compiling an empty shader. Supply a default shader that compiles and links.
Code which specified the opengl target but did not schedule any Funcs
glsl would fail due to compiling an empty shader. Supply a default
shader that compiles and links.

damienfir/Halide,adasworks/Halide,damienfir/Halide,gchauras/Halide,fengzhyuan/Halide,fengzhyuan/Halide,dougkwan/Halide,dougkwan/Halide,fengzhyuan/Halide,jiawen/Halide,psuriana/Halide,delcypher/Halide,psuriana/Halide,lglucin/Halide,delcypher/Halide,rodrigob/Halide,myrtleTree33/Halide,dougkwan/Halide,kenkuang1213/Halide,ronen/Halide,smxlong/Halide,fengzhyuan/Halide,adasworks/Halide,mcanthony/Halide,ayanazmat/Halide,kgnk/Halide,dan-tull/Halide,fengzhyuan/Halide,gchauras/Halide,jiawen/Halide,ayanazmat/Halide,dougkwan/Halide,tdenniston/Halide,ayanazmat/Halide,smxlong/Halide,ronen/Halide,jiawen/Halide,delcypher/Halide,kgnk/Halide,kenkuang1213/Halide,fengzhyuan/Halide,dougkwan/Halide,ayanazmat/Halide,ayanazmat/Halide,lglucin/Halide,mcanthony/Halide,delcypher/Halide,rodrigob/Halide,dan-tull/Halide,gchauras/Halide,rodrigob/Halide,lglucin/Halide,smxlong/Halide,dan-tull/Halide,ayanazmat/Halide,gchauras/Halide,adasworks/Halide,rodrigob/Halide,mcanthony/Halide,jiawen/Halide,smxlong/Halide,aam/Halide,ronen/Halide,delcypher/Halide,myrtleTree33/Halide,ronen/Halide,aam/Halide,myrtleTree33/Halide,kgnk/Halide,psuriana/Halide,kenkuang1213/Halide,dan-tull/Halide,mcanthony/Halide,psuriana/Halide,smxlong/Halide,adasworks/Halide,psuriana/Halide,kgnk/Halide,kenkuang1213/Halide,damienfir/Halide,aam/Halide,kgnk/Halide,myrtleTree33/Halide,dougkwan/Halide,kgnk/Halide,smxlong/Halide,fengzhyuan/Halide,aam/Halide,aam/Halide,damienfir/Halide,aam/Halide,mcanthony/Halide,myrtleTree33/Halide,kenkuang1213/Halide,kenkuang1213/Halide,ronen/Halide,rodrigob/Halide,tdenniston/Halide,adasworks/Halide,kgnk/Halide,jiawen/Halide,dan-tull/Halide,tdenniston/Halide,lglucin/Halide,dougkwan/Halide,damienfir/Halide,dan-tull/Halide,ronen/Halide,jiawen/Halide,ronen/Halide,gchauras/Halide,rodrigob/Halide,fengzhyuan/Halide,adasworks/Halide,kenkuang1213/Halide,smxlong/Halide,tdenniston/Halide,delcypher/Halide,jiawen/Halide,damienfir/Halide,tdenniston/Halide,rodrigob/Halide,ayanazmat/Halide,myrtleTree33/Halide,damienfir/Halide,gchauras/Halide,myrtleTree33/Halide,psuriana/Halide,kenkuang1213/Halide,lglucin/Halide,kgnk/Halide,mcanthony/Halide,delcypher/Halide,tdenniston/Halide,aam/Halide,lglucin/Halide,smxlong/Halide,dan-tull/Halide,ronen/Halide,rodrigob/Halide,lglucin/Halide,damienfir/Halide,mcanthony/Halide,mcanthony/Halide,dougkwan/Halide,tdenniston/Halide,tdenniston/Halide,adasworks/Halide,myrtleTree33/Halide,delcypher/Halide,adasworks/Halide,dan-tull/Halide,psuriana/Halide,ayanazmat/Halide