public static EglConfig[] ChooseConfigs(EglDisplay display, EglConfigAttributes attr)
{
var attribs = new[]
{
(int)EglConfigAttribute.RedSize, attr.RedBits,
(int)EglConfigAttribute.GreenSize, attr.GreenBits,
(int)EglConfigAttribute.BlueSize, attr.BlueBits,
(int)EglConfigAttribute.AlphaSize, attr.AlphaBits,
//
(int)EglConfigAttribute.DepthSize, attr.DepthBits,
(int)EglConfigAttribute.StencilSize, attr.StencilBits,
//
(int)EglConfigAttribute.Samples, attr.Samples,
//
(int)EglConfigAttribute.RenderableType, (int)attr.RenderableType,
//
(int)EglConfigAttribute.SurfaceType, (int)attr.SurfaceType,
EGL_NONE
};
var configAddrs = new IntPtr[64];
if (eglChooseConfig(display.Address, attribs, configAddrs, configAddrs.Length, out var numConfigs))
{
var configs = new EglConfig[numConfigs];
for (var i = 0; i < numConfigs; i++)
{
var address = configAddrs[i];
if (_configs.ContainsKey(address))
{
configs[i] = _configs[address];
}
else
{
configs[i] = new EglConfig(display, address);
_configs[address] = configs[i];
}
}
return(configs);
}
else
{
throw new EglException("Unable to choose EGL configurations");
}
}
internal EglConfig(EglDisplay display, IntPtr address)
{
Address = address;
Display = display;
//
Attributes = new EglConfigAttributes
{
//
RedBits = GetAttribute(EglConfigAttribute.RedSize),
BlueBits = GetAttribute(EglConfigAttribute.BlueSize),
GreenBits = GetAttribute(EglConfigAttribute.GreenSize),
AlphaBits = GetAttribute(EglConfigAttribute.AlphaSize),
//
DepthBits = GetAttribute(EglConfigAttribute.DepthSize),
StencilBits = GetAttribute(EglConfigAttribute.StencilSize),
//
Samples = GetAttribute(EglConfigAttribute.Samples),
//
RenderableType = (EglRenderableType)GetAttribute(EglConfigAttribute.RenderableType),
};
}
public static EglConfig ChooseConfig(EglDisplay display, EglConfigAttributes attr)
{
return(ChooseConfigs(display, attr).FirstOrDefault());
}
public static EglConfig[] ChooseConfigs(EglConfigAttributes attr)
{
return(ChooseConfigs(GetDisplay(IntPtr.Zero), attr));
}
public static EglContext CreateContext(EglConfigAttributes attr, int contextVersion = 3, EglContext shareContext = null)
{
return(CreateContext(GetDisplay(IntPtr.Zero), ChooseConfig(attr), contextVersion, shareContext));
}