internal void DeleteProgram(glProgram Program)
{
int programHandle = Program.Handle;
lock (this)
{
#if NET_STANDARD_13
_glDeleteProgram(programHandle);
#else
if (_CurrentThreadId == Thread.CurrentThread.ManagedThreadId)
{
_glDeleteProgram(programHandle);
}
else
{
if (_PendingProgramDeleteCount == _PendingProgramDelete.Length)
{
Array.Resize <int>(ref _PendingProgramDelete, _PendingProgramDelete.Length * 2);
}
_PendingProgramDelete[_PendingProgramDeleteCount] = programHandle;
_PendingProgramDeleteCount++;
}
#endif
}
}
internal int GetUniformLocation(glProgram Program, string Name)
{
byte[] NameData = System.Text.UTF8Encoding.UTF8.GetBytes(Name);
byte[] ZeroTerminated = new byte[NameData.Length + 1];
for (int n = 0; n < NameData.Length; n++)
{
ZeroTerminated[n] = NameData[n];
}
ZeroTerminated[ZeroTerminated.Length - 1] = 0;
fixed(byte *pNameData = &ZeroTerminated[0])
{
return(_glGetUniformLocation(Program.Handle, new IntPtr(pNameData)));
}
}
internal void BindAttribLocation(glProgram Program, int Index, string Name)
{
byte[] NameData = System.Text.UTF8Encoding.UTF8.GetBytes(Name);
byte[] ZeroTerminated = new byte[NameData.Length + 1];
for (int n = 0; n < NameData.Length; n++)
{
ZeroTerminated[n] = NameData[n];
}
ZeroTerminated[ZeroTerminated.Length - 1] = 0;
fixed(byte *pNameData = &ZeroTerminated[0])
{
_glBindAttribLocation(Program.Handle, Index, new IntPtr(pNameData));
}
}
internal void LinkProgram(glProgram Program)
{
_glLinkProgram(Program.Handle);
int linkStatus = 0;
_glGetProgramiv(Program.Handle, (int)glProgram.SymbolicName.GL_LINK_STATUS, new IntPtr(&linkStatus));
if (linkStatus == 0)
{
int logSize = 0;
_glGetProgramiv(Program.Handle, (int)glProgram.SymbolicName.GL_INFO_LOG_LENGTH, new IntPtr(&logSize));
if (logSize <= 0)
{
throw new Exception("Failed to link the program");
}
IntPtr infoLogBuffer = System.Runtime.InteropServices.Marshal.AllocHGlobal(logSize);
if (infoLogBuffer.ToInt64() == 0)
{
throw new Exception("Failed to link the program");
}
string log = "";
try
{
IntPtr sizeTLogSize = new IntPtr(logSize);
_glGetProgramInfoLog(Program.Handle, sizeTLogSize, new IntPtr(&sizeTLogSize), infoLogBuffer);
if (sizeTLogSize.ToInt32() > 0)
{
byte * pLog = (byte *)infoLogBuffer.ToPointer();
byte[] data = new byte[sizeTLogSize.ToInt32()];
for (int n = 0; n < data.Length && *pLog != 0; n++)
{
data[n] = *pLog;
pLog++;
}
log = System.Text.Encoding.UTF8.GetString(data);
}
}
finally
{
System.Runtime.InteropServices.Marshal.FreeHGlobal(infoLogBuffer);
}
throw new Exception("Failed to link the program: " + log);
}
}
internal void UseProgram(glProgram Program)
{
_glUseProgram(Program.Handle);
}
internal void AttachShader(glProgram Program, glShader Shader)
{
_glAttachShader(Program.Handle, Shader.Handle);
}