Swift使用String 转 GLchar 时是遇到问题
var source: UnsafePointer<GLchar> = (content as? NSString)?.utf8String
let shader =glCreateShader(type)
glShaderSource(shader,1, &source,nil)
错误提示
Cannot convert value of type 'UnsafePointer<GLchar>' (aka 'UnsafePointer<Int8>') to expected argument type 'UnsafePointer<UnsafePointer<GLchar>?>?' (aka 'Optional<UnsafePointer<Optional<UnsafePointer<Int8>>>>')
后搜索得到方案
let shaderStringUTF8 = content!.cString(using: String.defaultCStringEncoding.rawValue)
var glsource = UnsafePointer(shaderStringUTF8)
glShaderSource(shader,1, &source,nil)
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