using StgSharp.Control;
using StgSharp.Graphics;
using StgSharp.Graphics.GL;
using System;
using System.Runtime.InteropServices;

namespace StgSharp
{
    internal static partial class internalIO
    {
        [DllImport("StgSharpGraphics.dll",
            EntryPoint = "loadGLApi", CallingConvention = CallingConvention.Cdecl)]
        internal static extern GraphicIOPack InternalInitGraphicApi();

        [DllImport("StgSharpGraphics.dll",
            EntryPoint = "InitGL", CallingConvention = CallingConvention.Cdecl)]
        internal static extern unsafe void InternalInitGL();

        [DllImport("StgSharpGraphics.dll",
            EntryPoint = "InitWindow", CallingConvention = CallingConvention.Cdecl)]
        internal static extern unsafe IntPtr InternalInitWindow(formInfo win);

        [DllImport("StgSharpGraphics.dll",
            EntryPoint = "CompileShader", CallingConvention = CallingConvention.Cdecl)]
        internal static extern unsafe void InternalCompileShader
        (
            shaderObject* shaderObj
        );

        [DllImport("StgSharpGraphics.dll", EntryPoint = "SSGraphicShouldWindowClose",
            CallingConvention = CallingConvention.Cdecl)]
        internal static extern unsafe int InternalShouldFormClose(IntPtr formPtr);

        [DllImport("StgSharpGraphics.dll",
            EntryPoint = "RenderWindow", CallingConvention = CallingConvention.Cdecl)]
        internal static extern unsafe void InternalRenderWindow
        (
            IntPtr window,
            formInfo info,
            shaderObject* shaderObj
        );

        [DllImport("StgSharpGraphics.dll", EntryPoint = "TerminateWindow"
            , CallingConvention = CallingConvention.Cdecl)]
        internal static extern unsafe void TerminateWindow(shaderObject* shaderObj);
    }
}