ati_draw_buffers-arbfp: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/lib64/piglit/bin/ati_draw_buffers-arbfp - from package: piglit

You may install the required package with command yum install {package}

Error in other languages:
ati_draw_buffers-arbfp: bevel nie gevind nie
ati_draw_buffers-arbfp: comandă negăsită
ati_draw_buffers-arbfp: comando não encontrado
ati_draw_buffers-arbfp: commande introuvable
ati_draw_buffers-arbfp: command not found
ati_draw_buffers-arbfp: käsku ei ole
ati_draw_buffers-arbfp: không tìm thấy lệnh
ati_draw_buffers-arbfp: komanda nerasta
ati_draw_buffers-arbfp: Kommando nicht gefunden.
ati_draw_buffers-arbfp: kommandot finns inte
ati_draw_buffers-arbfp: komut yok
ati_draw_buffers-arbfp: nie znaleziono polecenia
ati_draw_buffers-arbfp: níor aimsíodh an t-ordú
ati_draw_buffers-arbfp: no se encontró la orden
ati_draw_buffers-arbfp: no s'ha trobat l'ordre
ati_draw_buffers-arbfp: opdracht niet gevonden
ati_draw_buffers-arbfp: parancs nem található
ati_draw_buffers-arbfp: perintah tidak ditemukan
ati_draw_buffers-arbfp: príkaz nenájdený
ati_draw_buffers-arbfp: příkaz nenalezen
ati_draw_buffers-arbfp: команда не найдена
ati_draw_buffers-arbfp: командата не е открита
ati_draw_buffers-arbfp: 命令找不到
ati_draw_buffers-arbfp: コマンドが見つかりません