public void SetVertexAttribute(string objectName, string shaderName, int index, string vertexPropertyName, int stride, int offset)
{
GL.BindVertexArray(_objectsHandleDictionary[objectName].ObjectHandle);
int location = GL.GetAttribLocation(_shaderHandleDictionary[shaderName], vertexPropertyName);
if (location != -1)
{
GL.EnableVertexAttribArray(location);
GL.VertexAttribPointer(location, 3, VertexAttribPointerType.Float, false, stride, IntPtr.Add(IntPtr.Zero, offset));
GL.VertexAttribDivisor(location, 0);
}
}
public void SetInstanceAttribute(string objectName, string shaderName, int index, string instancePropertyName, int stride, int offset)
{
GL.BindVertexArray(_objectsHandleDictionary[objectName].ObjectHandle);
int location = GL.GetAttribLocation(_shaderHandleDictionary[shaderName], instancePropertyName);
if (location != -1)
{
for (int i = 0; i < 4; i++)
{
GL.EnableVertexAttribArray(location + i);
GL.VertexAttribPointer(location + i, 4, VertexAttribPointerType.Float, false, stride, IntPtr.Add(IntPtr.Zero, i * offset));
GL.VertexAttribDivisor(location + i, 1);
}
}
}
