public EGLSurface CreateSurface(SwapChainPanel panel, Size?renderSurfaceSize, float?resolutionScale)
{
if (panel == null)
{
throw new ArgumentException("SwapChainPanel parameter is invalid");
}
if (renderSurfaceSize != null && resolutionScale != null)
{
throw new ArgumentException("A size and a scale can't both be specified");
}
EGLSurface surface = EGL.NO_SURFACE;
int[] surfaceAttributes =
{
// EGL.ANGLE_SURFACE_RENDER_TO_BACK_BUFFER is part of the same optimization as EGL.ANGLE_DISPLAY_ALLOW_RENDER_TO_BACK_BUFFER (see above).
// If you have compilation issues with it then please update your Visual Studio templates.
EGL.ANGLE_SURFACE_RENDER_TO_BACK_BUFFER, EGL.TRUE,
EGL.NONE
};
// Create a PropertySet and initialize with the EGLNativeWindowType.
PropertySet surfaceCreationProperties = new PropertySet();
surfaceCreationProperties.Add(ANGLEWindowsStore.EGLNativeWindowTypeProperty, panel);
// If a render surface size is specified, add it to the surface creation properties
if (renderSurfaceSize != null)
{
surfaceCreationProperties.Add(ANGLEWindowsStore.EGLRenderSurfaceSizeProperty,
PropertyValue.CreateSize((Size)renderSurfaceSize));
}
#if TODO
// If a resolution scale is specified, add it to the surface creation properties
if (resolutionScale != null)
{
surfaceCreationProperties.Add(ANGLEWindowsStore.EGLRenderResolutionScaleProperty,
PropertyValue.CreateSingle(resolutionScale));
}
#endif
surface = EGL.CreateWindowSurface(mEglDisplay, mEglConfig, surfaceCreationProperties, surfaceAttributes);
if (surface == EGL.NO_SURFACE)
{
throw new ApplicationException("Failed to create EGL surface");
}
return(surface);
}