| public static GetSize ( this surfaceFormat ) : int | ||
| surfaceFormat | this | |
| return | int | |
private void PlatformSaveAsJpeg(Stream stream, int width, int height)
{
#if WINDOWS_STOREAPP || WINDOWS_UAP
SaveAsImage(Windows.Graphics.Imaging.BitmapEncoder.JpegEncoderId, stream, width, height);
#endif
#if WINDOWS_PHONE
var pixelData = new byte[Width * Height * GraphicsExtensions.GetSize(Format)];
GetData(pixelData);
//We Must convert from BGRA to RGBA
ConvertToRGBA(Height, Width, pixelData);
var waitEvent = new ManualResetEventSlim(false);
Deployment.Current.Dispatcher.BeginInvoke(() =>
{
var bitmap = new WriteableBitmap(Width, Height);
System.Buffer.BlockCopy(pixelData, 0, bitmap.Pixels, 0, pixelData.Length);
bitmap.SaveJpeg(stream, width, height, 0, 100);
waitEvent.Set();
});
waitEvent.Wait();
#endif
#if !WINDOWS_STOREAPP && !WINDOWS_PHONE && !WINDOWS_UAP
throw new NotImplementedException();
#endif
}
private void SaveAsImage(Guid encoderId, Stream stream, int width, int height)
{
var pixelData = new byte[Width * Height * GraphicsExtensions.GetSize(Format)];
GetData(pixelData);
// TODO: We need to convert from Format to R8G8B8A8!
// TODO: We should implement async SaveAsPng() for WinRT.
Task.Run(async() =>
{
// Create a temporary memory stream for writing the png.
var memstream = new InMemoryRandomAccessStream();
// Write the png.
var encoder = await Windows.Graphics.Imaging.BitmapEncoder.CreateAsync(encoderId, memstream);
encoder.SetPixelData(BitmapPixelFormat.Rgba8, BitmapAlphaMode.Ignore, (uint)width, (uint)height, 96, 96, pixelData);
await encoder.FlushAsync();
// Copy the memory stream into the real output stream.
memstream.Seek(0);
memstream.AsStreamForRead().CopyTo(stream);
}).Wait();
}
private void PlatformConstruct(int width, int height, bool mipmap, SurfaceFormat format, SurfaceType type, bool shared)
{
this.glTarget = TextureTarget.Texture2D;
Threading.BlockOnUIThread(() =>
{
// Store the current bound texture.
var prevTexture = GraphicsExtensions.GetBoundTexture2D();
GenerateGLTextureIfRequired();
format.GetGLFormat(GraphicsDevice, out glInternalFormat, out glFormat, out glType);
if (glFormat == (GLPixelFormat)All.CompressedTextureFormats)
{
var imageSize = 0;
switch (format)
{
case SurfaceFormat.RgbPvrtc2Bpp:
case SurfaceFormat.RgbaPvrtc2Bpp:
imageSize = (Math.Max(this.width, 16) * Math.Max(this.height, 8) * 2 + 7) / 8;
break;
case SurfaceFormat.RgbPvrtc4Bpp:
case SurfaceFormat.RgbaPvrtc4Bpp:
imageSize = (Math.Max(this.width, 8) * Math.Max(this.height, 8) * 4 + 7) / 8;
break;
case SurfaceFormat.RgbEtc1:
case SurfaceFormat.Dxt1:
case SurfaceFormat.Dxt1a:
case SurfaceFormat.Dxt1SRgb:
case SurfaceFormat.Dxt3:
case SurfaceFormat.Dxt3SRgb:
case SurfaceFormat.Dxt5:
case SurfaceFormat.Dxt5SRgb:
imageSize = ((this.width + 3) / 4) * ((this.height + 3) / 4) * GraphicsExtensions.GetSize(format);
break;
default:
throw new NotSupportedException();
}
GL.CompressedTexImage2D(TextureTarget.Texture2D, 0, glInternalFormat,
this.width, this.height, 0,
imageSize, IntPtr.Zero);
GraphicsExtensions.CheckGLError();
}
else
{
GL.TexImage2D(TextureTarget.Texture2D, 0, glInternalFormat,
this.width, this.height, 0,
glFormat, glType, IntPtr.Zero);
GraphicsExtensions.CheckGLError();
}
// Restore the bound texture.
GL.BindTexture(TextureTarget.Texture2D, prevTexture);
GraphicsExtensions.CheckGLError();
});
}
private void PlatformSetData <T>(int level, int arraySlice, Rectangle?rect, T[] data, int startIndex, int elementCount) where T : struct
{
Threading.BlockOnUIThread(() =>
{
var elementSizeInByte = Marshal.SizeOf(typeof(T));
var dataHandle = GCHandle.Alloc(data, GCHandleType.Pinned);
// Use try..finally to make sure dataHandle is freed in case of an error
try
{
var startBytes = startIndex * elementSizeInByte;
var dataPtr = (IntPtr)(dataHandle.AddrOfPinnedObject().ToInt64() + startBytes);
int x, y, w, h;
if (rect.HasValue)
{
x = rect.Value.X;
y = rect.Value.Y;
w = rect.Value.Width;
h = rect.Value.Height;
}
else
{
x = 0;
y = 0;
w = Math.Max(width >> level, 1);
h = Math.Max(height >> level, 1);
// For DXT textures the width and height of each level is a multiple of 4.
// OpenGL only: The last two mip levels require the width and height to be
// passed as 2x2 and 1x1, but there needs to be enough data passed to occupy
// a 4x4 block.
// Ref: http://www.mentby.com/Group/mac-opengl/issue-with-dxt-mipmapped-textures.html
if (_format == SurfaceFormat.Dxt1 ||
_format == SurfaceFormat.Dxt1a ||
_format == SurfaceFormat.Dxt3 ||
_format == SurfaceFormat.Dxt5)
{
if (w > 4)
{
w = (w + 3) & ~3;
}
if (h > 4)
{
h = (h + 3) & ~3;
}
}
}
// Store the current bound texture.
var prevTexture = GraphicsExtensions.GetBoundTexture2D();
GenerateGLTextureIfRequired();
GL.BindTexture(TextureTarget.Texture2D, this.glTexture);
GraphicsExtensions.CheckGLError();
if (glFormat == (GLPixelFormat)All.CompressedTextureFormats)
{
if (rect.HasValue)
{
GL.CompressedTexSubImage2D(TextureTarget.Texture2D, level, x, y, w, h, glFormat, data.Length - startBytes, dataPtr);
GraphicsExtensions.CheckGLError();
}
else
{
GL.CompressedTexImage2D(TextureTarget.Texture2D, level, glInternalFormat, w, h, 0, data.Length - startBytes, dataPtr);
GraphicsExtensions.CheckGLError();
}
}
else
{
// Set pixel alignment to match texel size in bytes
GL.PixelStore(PixelStoreParameter.UnpackAlignment, GraphicsExtensions.GetSize(this.Format));
if (rect.HasValue)
{
GL.TexSubImage2D(TextureTarget.Texture2D, level,
x, y, w, h,
glFormat, glType, dataPtr);
GraphicsExtensions.CheckGLError();
}
else
{
GL.TexImage2D(TextureTarget.Texture2D, level,
glInternalFormat,
w, h, 0, glFormat, glType, dataPtr);
GraphicsExtensions.CheckGLError();
}
// Return to default pixel alignment
GL.PixelStore(PixelStoreParameter.UnpackAlignment, 4);
}
#if !ANDROID
GL.Finish();
GraphicsExtensions.CheckGLError();
#endif
// Restore the bound texture.
GL.BindTexture(TextureTarget.Texture2D, prevTexture);
GraphicsExtensions.CheckGLError();
}
finally
{
dataHandle.Free();
}
#if !ANDROID
// Required to make sure that any texture uploads on a thread are completed
// before the main thread tries to use the texture.
GL.Finish();
#endif
});
}
private void PlatformConstruct(int width, int height, bool mipmap, SurfaceFormat format, SurfaceType type, bool shared)
{
this.glTarget = TextureTarget.Texture2D;
Threading.BlockOnUIThread(() =>
{
// Store the current bound texture.
var prevTexture = GraphicsExtensions.GetBoundTexture2D();
GenerateGLTextureIfRequired();
format.GetGLFormat(GraphicsDevice, out glInternalFormat, out glFormat, out glType);
if (glFormat == (PixelFormat)GLPixelFormat.CompressedTextureFormats)
{
var imageSize = 0;
switch (format)
{
case SurfaceFormat.RgbPvrtc2Bpp:
case SurfaceFormat.RgbaPvrtc2Bpp:
imageSize = (Math.Max(this.width, 16) * Math.Max(this.height, 8) * 2 + 7) / 8;
break;
case SurfaceFormat.RgbPvrtc4Bpp:
case SurfaceFormat.RgbaPvrtc4Bpp:
imageSize = (Math.Max(this.width, 8) * Math.Max(this.height, 8) * 4 + 7) / 8;
break;
case SurfaceFormat.Dxt1:
case SurfaceFormat.Dxt1a:
case SurfaceFormat.Dxt1SRgb:
case SurfaceFormat.Dxt3:
case SurfaceFormat.Dxt3SRgb:
case SurfaceFormat.Dxt5:
case SurfaceFormat.Dxt5SRgb:
case SurfaceFormat.RgbEtc1:
case SurfaceFormat.RgbaAtcExplicitAlpha:
case SurfaceFormat.RgbaAtcInterpolatedAlpha:
imageSize = ((this.width + 3) / 4) * ((this.height + 3) / 4) * GraphicsExtensions.GetSize(format);
break;
default:
throw new NotSupportedException();
}
GL.CompressedTexImage2D(TextureTarget.Texture2D, 0, glInternalFormat,
this.width, this.height, 0,
imageSize, IntPtr.Zero);
GraphicsExtensions.CheckGLError();
}
else
{
GL.TexImage2D(TextureTarget.Texture2D, 0, glInternalFormat,
this.width, this.height, 0,
glFormat, glType, IntPtr.Zero);
GraphicsExtensions.CheckGLError();
}
if (mipmap)
{
#if IOS || ANDROID
GL.GenerateMipmap(TextureTarget.TextureCubeMap);
#else
GraphicsDevice.FramebufferHelper.Get().GenerateMipmap((int)glTarget);
// This updates the mipmaps after a change in the base texture
GL.TexParameter(TextureTarget.TextureCubeMap, TextureParameterName.GenerateMipmap, 1);
#endif
}
// Restore the bound texture.
GL.BindTexture(TextureTarget.Texture2D, prevTexture);
GraphicsExtensions.CheckGLError();
});
}
