public static EglConfig[] GetConfigs(EglDisplay display)
{
var configAddrs = new IntPtr[64];
if (eglGetConfigs(display.Address, configAddrs, configAddrs.Length, out var numConfigs))
{
var configs = new EglConfig[numConfigs];
for (var i = 0; i < configs.Length; i++)
{
var address = configAddrs[i];
if (_configs.ContainsKey(address))
{
configs[i] = _configs[address];
}
else
{
configs[i] = new EglConfig(display, configAddrs[i]);
_configs[address] = configs[i];
}
}
return(configs);
}
else
{
throw new EglException("Unable to get all EGL configurations");
}
}
public static EglContext CreateContext(EglDisplay display, EglConfig config, int contextVersion = 3, EglContext shareContext = null)
{
var attribs = new[] { EGL_CONTEXT_CLIENT_VERSION, contextVersion, EGL_NONE };
var contextAddress = eglCreateContext(display.Address, config.Address, shareContext?.Address ?? IntPtr.Zero, attribs);
if (contextAddress == NO_CONTEXT)
{
throw new EglException("Unable to create EGL context");
}
var context = new EglContext(config, contextAddress);
return(_contexts[contextAddress] = context);
}
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");
}
}
public static EglContext CreateContext(EglConfig config, int contextVersion = 3, EglContext shareContext = null)
{
return(CreateContext(GetDisplay(IntPtr.Zero), config, contextVersion, shareContext));
}
internal static bool GetConfigAttrib(EglDisplay display, EglConfig config, EglConfigAttribute attribute, out int value)
{
return(eglGetConfigAttrib(display.Address, config.Address, attribute, out value));
}
internal EglContext(EglConfig config, IntPtr address)
{
Config = config;
Address = address;
}