C#•13mo ago

object reference not set to instance of object on a static method call

so im trying to use an opengl binding package (Veldrid.OpenGLBinding) but, when i call any of the methods, it says "Object reference not set to an instance of an object". I'm guessing I'm not using it right but it has absolutely zero documentation so I'm lost

37 Replies

TheRanger•13mo ago

$details

MODiX•13mo ago

When you ask a question, make sure you include as much detail as possible. Such as code, the issue you are facing, and what you expect the result to be. Upload code here https://paste.mod.gg/ (see $code for more information on how to paste your code)

nutOP•13mo ago

        public void Run()
        {


            GL.Initialize();
            Glfw.Init();

            window = new Window(800, 600, "W");

            GL.ClearColor(255, 255, 255, 255);
            
            while (!window.ShouldClose())
            {
                window.Clear();

                window.SwapBuffers();
                Glfw.PollEvents();
            }
        }

        public void Run()
        {


            GL.Initialize();
            Glfw.Init();

            window = new Window(800, 600, "W");

            GL.ClearColor(255, 255, 255, 255);
            
            while (!window.ShouldClose())
            {
                window.Clear();

                window.SwapBuffers();
                Glfw.PollEvents();
            }
        }

I tried switching to OpenGL.NET and same issue GL.ClearColor throws this error

nutOP•13mo ago

TheRanger•13mo ago

are you in release mode? also we usually use silk.NET(Most Recommended) or OpenTK

nutOP•13mo ago

i didnt wanna use either of those because they lock you into their windowing system that i dont like i wanted to just use glfw windowing directly and it doesnt work in debug nor release mode

TheRanger•13mo ago

lock you into their windowing system ?

nutOP•13mo ago

you know, extend IWindow, all your code goes in OnUpdateFrame, OnRenderFrame, etc

TheRanger•13mo ago

nutOP•13mo ago

i just wanted a more c style glfw setup

TheRanger•13mo ago

never used OpenGL.NET so no idea

nutOP•13mo ago

do you know of anything that doesnt lock you into the windowing system i thought silk would work since it had glfw bindings but it didnt have any opengl bindings i could use

TheRanger•13mo ago

did you follow the tutorial exactly? perhaps you missed something

nutOP•13mo ago

yeah, ithink

TheRanger•13mo ago

found some code in so

       Glfw.Init();
            GLFWwindow window = Glfw.CreateWindow(1080, 720, "Yeet", null, null);
            Glfw.MakeContextCurrent(window);
            Gl.Initialize();

       Glfw.Init();
            GLFWwindow window = Glfw.CreateWindow(1080, 720, "Yeet", null, null);
            Glfw.MakeContextCurrent(window);
            Gl.Initialize();

perhaps you need to initialize it this way

nutOP•13mo ago

where did you find that?

TheRanger•13mo ago

stack overflow

nutOP•13mo ago

could you link it my glfw might be the problem (somehow?? idk)

TheRanger•13mo ago

https://stackoverflow.com/questions/61318104/how-do-i-initialize-opengl-net-with-glfw-net

Stack Overflow

How Do I Initialize OpenGL.NET with GLFW.Net?

I am trying to use OpenGL and GLFW in C#. I Have Installed NuGet Packages for GLFW.Net and OpenGL.Net. What I cannot for my life figure out, is how do I setup the context for OpenGL.Net with GLFW.N...

TheRanger•13mo ago

ur issue probably is, it doesnt know which window to use ClearColor on

nutOP•13mo ago

 Glfw.Init();
 Window window = Glfw.CreateWindow(1080, 720, "Yeet", GLFW.Monitor.None, Window.None);
 GL.Initialize();
 Glfw.MakeContextCurrent(window);
 GL.ClearColor(255, 255, 255, 255);
 
 while (true)
 {
     Glfw.PollEvents();
 }

 Glfw.Init();
 Window window = Glfw.CreateWindow(1080, 720, "Yeet", GLFW.Monitor.None, Window.None);
 GL.Initialize();
 Glfw.MakeContextCurrent(window);
 GL.ClearColor(255, 255, 255, 255);
 
 while (true)
 {
     Glfw.PollEvents();
 }

this is what ive got now same crash

TheRanger•13mo ago

GL.Initialize(); Glfw.MakeContextCurrent(window); but the code calls Glfw.MakeContextCurrent(window); before GL.Initialize(); in the stack overflow page

nutOP•13mo ago

the solution doesnt also somehow, a different overload of clearcolor fixes it if i use float,float,float,float instead of nint, nint, nint, nint it works ?? okayt then

TheRanger•13mo ago

nint or int?

nutOP•13mo ago

nint dont know exactly what that is

TheRanger•13mo ago

thats unsafe, the overload is probably meant for something else nint is IntPtr

nutOP•13mo ago

i figured

TheRanger•13mo ago

or simply a pointer like in C

nutOP•13mo ago

thats why i tried the different overload

TheRanger•13mo ago

yeah the color values are normalized 0 to 1 instead of 0 to 255

tannergooding•13mo ago

IntPtr is not a pointer it is a pointer sized integer Int32 is 32-bits, Int64 is 64-bits IntPtr is ptr-bits

Perksey•13mo ago

Why not? Silk doesn’t lock you into any windowing system.

nutOP•13mo ago

silk makes you use its window class, and you can create a window andm ake your own event loop like you can with glfw but i switched to silk anyways and im still having trouble

Perksey•13mo ago

no it doesn’t, you can use silk without the windowing class what trouble are you having?

nutOP•13mo ago

why is it all unsafe? why arent there functions to upload uniform matices safely? why do i have to make an unsafe context, get a pointer to the matrix struct, and use that

Perksey•13mo ago

Any time you’re using anything that isn’t a C# function you are using unsafe, any library that tries to convince you otherwise is lying. Even if you don’t have to use the unsafe keyword, make no mistake it is unsafe. You shouldn’t try to hide from it just because it has a scary name. You are leaving the scary of the .NET runtime. however, we do provide overloads for using refs, so you could for example take a ref to the first matrix member instead The tutorials do not use these overloads tmk, they predate the overloads existence and we didn’t feel like it was a high priority to change them.

nutOP•13mo ago

how can i get this ref to the first member? nvm i just bit my tongue and used pointers

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object reference not set to instance of object on a static method call