/// <inheritdoc/>
public override Surface2D CreateSurface(Rectangle region)
{
Contract.EnsureNotDisposed(this, Disposed);
if (region.Left < 0 || region.Top < 0 || region.Right > Width || region.Bottom > Height || region.Width <= 0 || region.Height <= 0)
{
throw new ArgumentOutOfRangeException("region");
}
var copysurf = new SDL2PlatformNativeSurface(region.Width, region.Height);
var srcrect = new SDL_Rect()
{
x = region.X, y = region.Y, w = region.Width, h = region.Height
};
var dstrect = new SDL_Rect()
{
x = 0, y = 0, w = region.Width, h = region.Height
};
if (SDL_BlitSurface(nativesurf.NativePtr, &srcrect, copysurf.NativePtr, &dstrect) < 0)
{
throw new SDL2Exception();
}
var options = SrgbEncoded ? SurfaceOptions.SrgbColor : SurfaceOptions.LinearColor;
var result = new SDL2Surface2D(Ultraviolet, copysurf, options);
return(result);
}
/// <inheritdoc/>
public override Texture2D CreateTexture(Boolean unprocessed)
{
Contract.EnsureNotDisposed(this, Disposed);
if (unprocessed)
{
var options = TextureOptions.ImmutableStorage | (SrgbEncoded ? TextureOptions.SrgbColor : TextureOptions.LinearColor);
return(Texture2D.CreateTexture((IntPtr)NativePtr->pixels, Width, Height, BytesPerPixel, options));
}
else
{
using (var copysurf = new SDL2PlatformNativeSurface(Width, Height))
{
if (SDL_BlitSurface(nativesurf.NativePtr, null, copysurf.NativePtr, null) < 0)
{
throw new SDL2Exception();
}
copysurf.Flip(Ultraviolet.GetGraphics().Capabilities.FlippedTextures ?
SurfaceFlipDirection.Vertical : SurfaceFlipDirection.None);
var options = TextureOptions.ImmutableStorage | (SrgbEncoded ? TextureOptions.SrgbColor : TextureOptions.LinearColor);
return(Texture2D.CreateTexture((IntPtr)copysurf.NativePtr->pixels, copysurf.Width, copysurf.Height, copysurf.BytesPerPixel, options));
}
}
}
/// <inheritdoc/>
public override PlatformNativeSurface CreateCopy()
{
Contract.EnsureNotDisposed(this, Disposed);
var copy = new SDL2PlatformNativeSurface(Width, Height);
if (SDL_BlitSurface(ptr, null, copy.ptr, null) < 0)
{
throw new SDL2Exception();
}
copy.isReadyForTextureExport = isReadyForTextureExport;
copy.isFlippedVertically = isFlippedVertically;
copy.isFlippedHorizontally = isFlippedHorizontally;
copy.isAlphaPremultiplied = isAlphaPremultiplied;
return(copy);
}
