Specify the clear values for the color buffer, default values are at 0.0

Property definitions

glesv2 :: glesv2 $ Sys :: glClearColor
# Specify the clear values for the color buffer, default values are at 0.0
fun glClearColor(red, green, blue, alpha: Float) `{
	glClearColor(red, green, blue, alpha);
`}
lib/glesv2/glesv2.nit:838,1--841,2