add png output for screenshots

[rigol] / .gitignore

diff --git a/.gitignore b/.gitignore
index b3824558be218d990ad34167cb1d645170cd3258..7dae92ce3a6209a81413154d1003be34fe6c5bed 100644 (file)
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
 raw2gp
 rigol
 rigol.o
+png.o
+screen_*.png