Question

在第一个函数中，我无法弄清楚我做错了什么。它返回行中的错误， 返回compileShader（GLenum（GL_VERTEX_SHADER），ShaderCode）错误是无法调用＆＃39; init＆＃39;使用类型＆＃39;（$ t3，NSString）＆＃39;

的参数列表

class ShaderHelper{

    class func compileVertexShader(ShaderCode: NSString) ->GLint{
        return compileShader(GLenum(GL_VERTEX_SHADER), ShaderCode)
    }

    class func compileShader(type: GLenum, shaderCode: NSString) -> GLuint{
        var shaderObjectId = glCreateShader(type);

        if(shaderObjectId == 0){
            if(LoggerConfig.props.On){
                println("Could not create new shader!")
            }
            return 0
        }

        var shaderStringUTF8 = shaderCode.cStringUsingEncoding(NSUTF8StringEncoding)
        var shaderStringLength: GLint = GLint(Int32(shaderCode.length));

        glShaderSource(shaderObjectId, 1, &shaderStringUTF8, &shaderStringLength)
        glCompileShader(shaderObjectId)

        var compileStatus = GLint()

        glGetShaderiv(shaderObjectId, GLenum(GL_COMPILE_STATUS), &compileStatus)

        if(compileStatus == 0){
            if(LoggerConfig.props.On){
                println("Compilation of shader failed.")
            }
            glDeleteShader(shaderObjectId)
            return 0
        }else if (compileStatus == 1){
            if(LoggerConfig.props.On){
                println("Compilation Successful")
            }

        }
        return shaderObjectId;
    }

Answer 1

这里的问题不在于init方法而是在compileVertexShader和compileShader中的返回类型，而一个返回GLInt而其他返回GLuint。如果你改变那些匹配，你的错误应该消失。

class ShaderHelper{

    class func compileVertexShader(ShaderCode: NSString) ->GLuint{
        return compileShader(GLenum(GL_VERTEX_SHADER), shaderCode: ShaderCode)
    }

    class func compileShader(type: GLenum, shaderCode: NSString) -> GLuint{
        var shaderObjectId = glCreateShader(type);

        if(shaderObjectId == 0){
            if(LoggerConfig.props.On){
                println("Could not create new shader!")
            }
            return 0
        }

        var shaderStringUTF8 = shaderCode.cStringUsingEncoding(NSUTF8StringEncoding)
        var shaderStringLength: GLint = GLint(Int32(shaderCode.length));

        glShaderSource(shaderObjectId, 1, &shaderStringUTF8, &shaderStringLength)
        glCompileShader(shaderObjectId)

        var compileStatus = GLint()

        glGetShaderiv(shaderObjectId, GLenum(GL_COMPILE_STATUS), &compileStatus)

        if(compileStatus == 0){
            if(LoggerConfig.props.On){
                println("Compilation of shader failed.")
            }
            glDeleteShader(shaderObjectId)
            return 0
        }else if (compileStatus == 1){
            if(LoggerConfig.props.On){
                println("Compilation Successful")
            }

        }
        return shaderObjectId;
}

错误swift提供了很多调试时没有意义。你应该仔细选择参数类型和返回类型，它应该没问题。

Swift：无法使用类型为'（$ t3，NSString）'的参数列表调用'init'

1 个答案: