Returns null
if the source is not available, usually when the shader
was created from a binary file.
# Source of the shader, if available
#
# Returns `null` if the source is not available, usually when the shader
# was created from a binary file.
fun source: nullable String
do
var size = glGetShaderiv(self, gl_SHADER_SOURCE_LENGTH)
if size == 0 then return null
return source_native(size).to_s
end
lib/glesv2/glesv2.nit:230,2--239,4