/// <summary>
/// Creates a new instance of the <see cref="Surface2D"/> class.
/// </summary>
/// <param name="source">The <see cref="SurfaceSource"/> from which to create the surface.</param>
/// <returns>The instance of <see cref="Surface2D"/> that was created.</returns>
public static Surface2D Create(SurfaceSource source)
{
Contract.Require(source, nameof(source));
var uv = UltravioletContext.DemandCurrent();
return(uv.GetFactoryMethod <Surface2DFromSourceFactory>()(uv, source));
}
/// <summary>
/// Creates a new instance of SDL_Surface from the image data contained in the specified bitmap.
/// </summary>
/// <param name="source">The surface source that contains the image data from which to create the surface.</param>
/// <returns>The instance of SDL_Surface that was created.</returns>
public static SDL_Surface CreateFromSurfaceSource(SurfaceSource source)
{
Contract.Require(source, "source");
var width = source.Width;
var height = source.Height;
var bmpSurface = new SDL_Surface(width, height);
for (int y = 0; y < height; y++)
{
var pDst = (uint*)((byte*)bmpSurface.Native->pixels + (bmpSurface.Native->pitch * y));
for (int x = 0; x < width; x++)
{
*pDst++ = source[x, y].ToArgb();
}
}
return bmpSurface;
}
/// <summary>
/// Creates a new instance of the <see cref="Surface2D"/> class.
/// </summary>
/// <param name="source">The <see cref="SurfaceSource"/> from which to create the surface.</param>
/// <returns>The instance of <see cref="Surface2D"/> that was created.</returns>
public static Surface2D Create(SurfaceSource source)
{
Contract.Require(source, nameof(source));
var uv = UltravioletContext.DemandCurrent();
return uv.GetFactoryMethod<Surface2DFromSourceFactory>()(uv, source);
}
/// <summary>
/// Creates a new instance of SDL_Surface from the image data contained in the specified bitmap.
/// </summary>
/// <param name="source">The surface source that contains the image data from which to create the surface.</param>
/// <returns>The instance of SDL_Surface that was created.</returns>
public static SDL_Surface CreateFromSurfaceSource(SurfaceSource source)
{
Contract.Require(source, nameof(source));
var width = source.Width;
var height = source.Height;
var bmpSurface = new SDL_Surface(width, height);
var pDstData = (byte*)bmpSurface.Native->pixels;
var pSrcData = (byte*)source.Data;
var dstExtraBytes = bmpSurface.Native->pitch - (bmpSurface.Native->w * 4);
var srcExtraBytes = source.Stride - (source.Width * 4);
byte srcR, srcG, srcB, srcA;
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
srcR = *pSrcData++;
srcG = *pSrcData++;
srcB = *pSrcData++;
srcA = *pSrcData++;
if (source.DataFormat == SurfaceSourceDataFormat.BGRA)
{
var temp = srcR;
srcR = srcB;
srcB = temp;
}
*pDstData++ = srcB;
*pDstData++ = srcG;
*pDstData++ = srcR;
*pDstData++ = srcA;
}
pDstData += dstExtraBytes;
pSrcData += srcExtraBytes;
}
return bmpSurface;
}
/// <summary>
/// Initializes a new instance of the OpenGLSurface2D class.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="source">The surface source from which to create the surface.</param>
public OpenGLSurface2D(UltravioletContext uv, SurfaceSource source)
: this(uv, SDL_Surface.CreateFromSurfaceSource(source))
{
}
