//-----------------------------------------------------------------------
// -----------------------------------------------------------------------
// file="gl"
// Project: StgSharp
// AuthorGroup: Nitload
// Copyright (c) Nitload. All rights reserved.
//     
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//     
// -----------------------------------------------------------------------
// -----------------------------------------------------------------------
using StgSharp.Graphics;
using StgSharp.Graphics.OpenGL;

using System;
using System.Collections.Generic;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

namespace StgSharp.Internal
{
    internal static partial class GraphicFramework
    {

        internal static uint[] GLtype = [];

        static GraphicFramework()
        {
            GLtype[(int)TypeCode.Single] = glConst.FLOAT;
            GLtype[(int)TypeCode.Int32] = glConst.INT;
            GLtype[(int)TypeCode.UInt32] = glConst.UNSIGNED_INT;
            GLtype[(int)TypeCode.Int16] = glConst.SHORT;
            GLtype[(int)TypeCode.UInt16] = glConst.UNSIGNED_SHORT;
            GLtype[(int)TypeCode.SByte] = glConst.BYTE;
            GLtype[(int)TypeCode.Byte] = glConst.UNSIGNED_BYTE;
        }

        [LibraryImport(Native.LibName, EntryPoint = "glCheckShaderStat")]
        [UnmanagedCallConv(CallConvs =[ typeof(CallConvCdecl) ])]
        #pragma warning disable CA5392
        internal static partial int glCheckShaderStatus(
                                    ref OpenglContext context,
                                    uint shaderHandle,
                                    int key,
                                    ref IntPtr logPtr);
        #pragma warning restore CA5392


        #region ssgc api define

        [LibraryImport(Native.LibName, EntryPoint = "initGL")]
        [UnmanagedCallConv(CallConvs =[ typeof(CallConvCdecl) ])]
        internal static partial void InternalInitGL(int majorVersion, int minorVersion);

        [LibraryImport(Native.LibName, EntryPoint = "loadGlfuncDefault", StringMarshalling = StringMarshalling.Utf8)]
        [UnmanagedCallConv(CallConvs =[ typeof(CallConvCdecl) ])]
        internal static partial IntPtr InternalLoadGlfuncDefault(string name);

        [LibraryImport(Native.LibName, EntryPoint = "linkShaderProgram")]
        [UnmanagedCallConv(CallConvs =[ typeof(CallConvCdecl) ])]
        internal static unsafe partial uint InternalLinkShaderProgram(OpenglContext* context, uint shaderProgram);

        [LibraryImport(Native.LibName, EntryPoint = "readLog")]
        [UnmanagedCallConv(CallConvs =[ typeof(CallConvCdecl) ])]
        internal static unsafe partial IntPtr InternalReadSSCLog();

        [LibraryImport(Native.LibName, EntryPoint = "loadImageData", StringMarshalling = StringMarshalling.Utf8)]
        [UnmanagedCallConv(CallConvs =[ typeof(CallConvCdecl) ])]
        internal static unsafe partial void InternalLoadImage(string fileName, ImageInfo* output, ImageLoader loader);

        [LibraryImport(Native.LibName, EntryPoint = "unloadImageData")]
        [UnmanagedCallConv(CallConvs =[ typeof(CallConvCdecl) ])]
        internal static unsafe partial void InternalUnloadImage(ImageInfo* output);

    #endregion ssgc api define
    }
}