Dear Imgui Sample using OpenTK

OpenGL 4.5

This version of the repository uses a lot of opengl 4.5 features for convenience (not having to bind buffers and stuff).

For a opengl 3.3 version of the repo using opentk 3.2 checkout the opengl3.3 branch.

The opengl3.3 branch is written for OpenTK 3 so some changes will have to be made. There is no version of this sample that uses opentk 4 and opengl 3.3.

BadImageFormatexception

If you get the following error you might have to set your platform target to x86:

System.BadImageFormatException: 'An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)'

To do that, right click your project (all projects referencing ImGui.NET), click "Properties", click "Build", and change the "Platform target" to "x86".

To see more info and a potential fix you can take a look at issue #2.

Remember to enable/disable OpenGL features after use!

Note that ImGuiController.Render() enables and disables some OpenGL features. The following is a list of state that ImGuiController.Render() changes:

• Disbles blending
• Disables scissor test
• Disables culling
• Disables depth test
• Changes blend function
• Changes scissor rectangle
• Changes the shader program in use
• Sets texture unit 0's Texture2D to zero
• Sets blend equation to FuncAdd
• Sets blend func to SrcAlpha, OneMinusSrcAlpha
• Unbinds any Vertex Array Object