103 lines
3.3 KiB
C#
103 lines
3.3 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection;
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using System.Runtime.InteropServices;
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using System.Text;
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namespace StgSharp.Graphics
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{
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public unsafe partial class Form
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{
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internal GLcontext* glContext;
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private int missingAPIcount = 0;
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private int problemAPIcount = 0;
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public unsafe IntPtr LoadGLfunc([MarshalAs(UnmanagedType.LPStr)] string name)
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{
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IntPtr ret = InternalIO.glfw.GetProcAddress(name);
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if (ret == default)
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{
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InternalIO.InternalWriteLog(
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$"Cannot load OpenGL api called {name}, this api may not exist or supported.",
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LogType.Warning);
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missingAPIcount++;
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return ret;
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}
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return ret;
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}
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public unsafe void LoadGlapi()
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{
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GLcontext* context = (GLcontext*)InternalIO.internalCreatGLcontext(LoadGLfunc);
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if ((ulong)context == 0)
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{
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throw new Exception($"Failed to load OpenGL api for current context \"{(ulong)glContext}\"");
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}
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//check out if all api is converted correctely.
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FieldInfo[] fieldInfos = typeof(GLcontext).GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
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string problemLog = "Have problem in converting the fallowing GL API to C# delegates:\n";
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foreach (FieldInfo item in fieldInfos)
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{
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if (item.FieldType.Name.Contains("PFNG"))
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{
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if (item.GetValue(*glContext) == null)
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{
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problemLog += item.Name + ",";
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problemAPIcount++;
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}
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}
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}
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InternalIO.InternalWriteLog(problemLog, LogType.Error);
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if (problemAPIcount > missingAPIcount)
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{
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InternalIO.InternalWriteLog("Attempt to reload GL APIs", LogType.Info);
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//use IntPtr as interface
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GLcontextIO* iopack = (GLcontextIO*)context;
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FieldInfo[] source = typeof(GLcontextIO).GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
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foreach (FieldInfo item in source)
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{
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if (item.FieldType.IsSubclassOf(typeof(Delegate))
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&& item.GetValue(*context) == null)
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{
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IntPtr funcPtr = LoadGLfunc(item.Name);
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if (funcPtr != IntPtr.Zero)
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{
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try
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{
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Delegate dele = Marshal.GetDelegateForFunctionPointer(funcPtr, item.FieldType);
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item.SetValue(*context, dele);
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}
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catch (Exception ex)
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{
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InternalIO.InternalWriteLog(
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$"{ex.Message}",
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LogType.Error);
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}
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}
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}
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}
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}
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glContext = context;
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GL.gl = glContext;
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}
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}
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}
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