protected static Opacity ComputeOpacity(ITextureUpload upload)
{
// TODO: Investigate performance issues and revert functionality once we are sure there is no overhead.
// see https://github.com/ppy/osu/issues/9307
return(Opacity.Mixed);
// ReadOnlySpan<Rgba32> data = upload.Data;
//
// if (data.Length == 0)
// return Opacity.Transparent;
//
// int firstPixelValue = data[0].A;
//
// // Check if the first pixel has partial transparency (neither fully-opaque nor fully-transparent).
// if (firstPixelValue != 0 && firstPixelValue != 255)
// return Opacity.Mixed;
//
// // The first pixel is GUARANTEED to be either fully-opaque or fully-transparent.
// // Now we need to go through the rest of the image and check that every other pixel matches this value.
// for (int i = 1; i < data.Length; i++)
// {
// if (data[i].A != firstPixelValue)
// return Opacity.Mixed;
// }
//
// return firstPixelValue == 0 ? Opacity.Transparent : Opacity.Opaque;
}
internal override void SetData(ITextureUpload upload, WrapMode wrapModeS, WrapMode wrapModeT, Opacity?uploadOpacity)
{
// Can only perform padding when the bounds are a sub-part of the texture
RectangleI middleBounds = upload.Bounds;
if (middleBounds.IsEmpty || middleBounds.Width * middleBounds.Height > upload.Data.Length)
{
// For a texture atlas, we don't care about opacity, so we avoid
// any computations related to it by assuming it to be mixed.
base.SetData(upload, wrapModeS, wrapModeT, Opacity.Mixed);
return;
}
int actualPadding = padding / (1 << upload.Level);
if (wrapModeS != WrapMode.None && wrapModeT != WrapMode.None)
{
uploadCornerPadding(upload, middleBounds, actualPadding);
}
if (wrapModeS != WrapMode.None)
{
uploadHorizontalPadding(upload, middleBounds, actualPadding);
}
if (wrapModeT != WrapMode.None)
{
uploadVerticalPadding(upload, middleBounds, actualPadding);
}
// Upload the middle part of the texture
// For a texture atlas, we don't care about opacity, so we avoid
// any computations related to it by assuming it to be mixed.
base.SetData(upload, wrapModeS, wrapModeT, Opacity.Mixed);
}
protected static Opacity ComputeOpacity(ITextureUpload upload)
{
// TODO: Investigate performance issues and revert functionality once we are sure there is no overhead.
// see https://github.com/ppy/osu/issues/9307
return(Opacity.Mixed);
// if (upload.Data.Length == 0)
// return Opacity.Transparent;
//
// bool isTransparent = true;
// bool isOpaque = true;
//
// for (int i = 0; i < upload.Data.Length; ++i)
// {
// isTransparent &= upload.Data[i].A == 0;
// isOpaque &= upload.Data[i].A == 255;
//
// if (!isTransparent && !isOpaque)
// return Opacity.Mixed;
// }
//
// if (isTransparent)
// return Opacity.Transparent;
//
// return Opacity.Opaque;
}
protected override void DoUpload(ITextureUpload upload, IntPtr dataPointer)
{
if (!(upload is VideoTextureUpload videoUpload))
{
return;
}
// Do we need to generate a new texture?
if (textureIds == null)
{
Debug.Assert(memoryLease == null);
memoryLease = NativeMemoryTracker.AddMemory(this, Width * Height * 3 / 2);
textureIds = new int[3];
GL.GenTextures(textureIds.Length, textureIds);
for (int i = 0; i < textureIds.Length; i++)
{
GLWrapper.BindTexture(textureIds[i]);
if (i == 0)
{
int width = videoUpload.Frame->width;
int height = videoUpload.Frame->height;
GL.TexImage2D(TextureTarget2d.Texture2D, 0, TextureComponentCount.R8, width, height, 0, PixelFormat.Red, PixelType.UnsignedByte, IntPtr.Zero);
textureSize += width * height;
}
else
{
int width = (videoUpload.Frame->width + 1) / 2;
int height = (videoUpload.Frame->height + 1) / 2;
GL.TexImage2D(TextureTarget2d.Texture2D, 0, TextureComponentCount.R8, width, height, 0, PixelFormat.Red, PixelType.UnsignedByte, IntPtr.Zero);
textureSize += width * height;
}
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)All.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)All.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)TextureWrapMode.ClampToEdge);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)TextureWrapMode.ClampToEdge);
}
}
for (int i = 0; i < textureIds.Length; i++)
{
GLWrapper.BindTexture(textureIds[i]);
GL.PixelStore(PixelStoreParameter.UnpackRowLength, videoUpload.Frame->linesize[(uint)i]);
GL.TexSubImage2D(TextureTarget2d.Texture2D, 0, 0, 0, videoUpload.Frame->width / (i > 0 ? 2 : 1), videoUpload.Frame->height / (i > 0 ? 2 : 1),
PixelFormat.Red, PixelType.UnsignedByte, (IntPtr)videoUpload.Frame->data[(uint)i]);
}
GL.PixelStore(PixelStoreParameter.UnpackRowLength, 0);
UploadComplete = true;
}
public Layer(SKBitmap image)
{
RelativeSizeAxes = Axes.Both;
InternalChild = Sprite = new Sprite()
{
RelativeSizeAxes = Axes.Both
};
IsVisible.ValueChanged += e => Alpha = e.NewValue ? 1 : 0;
Image = null !; Canvas = null !; Upload = null !;
SetImage(image);
}
private void uploadHorizontalPadding(ITextureUpload upload, RectangleI middleBounds, int actualPadding)
{
RectangleI[] sideBoundsArray =
{
new RectangleI(middleBounds.X - actualPadding, middleBounds.Y, actualPadding, middleBounds.Height).Intersect(atlasBounds), // Left
new RectangleI(middleBounds.X + middleBounds.Width, middleBounds.Y, actualPadding, middleBounds.Height).Intersect(atlasBounds), // Right
};
int[] sideIndices =
{
0, // Left
middleBounds.Width - 1, // Right
};
for (int i = 0; i < 2; ++i)
{
RectangleI sideBounds = sideBoundsArray[i];
if (!sideBounds.IsEmpty)
{
bool allTransparentBlack = true;
int index = sideIndices[i];
var sideUpload = new MemoryAllocatorTextureUpload(sideBounds.Width, sideBounds.Height)
{
Bounds = sideBounds
};
int stride = middleBounds.Width;
for (int y = 0; y < sideBounds.Height; ++y)
{
for (int x = 0; x < sideBounds.Width; ++x)
{
Rgba32 pixel = upload.Data[index + y * stride];
allTransparentBlack &= pixel == transparent_black;
sideUpload.RawData[y * sideBounds.Width + x] = pixel;
}
}
// Only upload padding if the border isn't completely transparent.
if (!allTransparentBlack)
{
// For a texture atlas, we don't care about opacity, so we avoid
// any computations related to it by assuming it to be mixed.
base.SetData(sideUpload, WrapMode.None, WrapMode.None, Opacity.Mixed);
}
}
}
}
internal override void SetData(ITextureUpload upload, WrapMode wrapModeS, WrapMode wrapModeT, Opacity?uploadOpacity)
{
if (uploadOpacity != null && uploadOpacity != Opacity.Opaque)
{
throw new InvalidOperationException("Video texture uploads must always be opaque");
}
UploadComplete = false;
// We do not support videos with transparency at this point,
// so the upload's opacity as well as the texture's opacity
// is always opaque.
base.SetData(upload, wrapModeS, wrapModeT, Opacity = Opacity.Opaque);
}
protected void UpdateOpacity(ITextureUpload upload, ref Opacity?uploadOpacity)
{
// Compute opacity if it doesn't have a value yet
uploadOpacity ??= ComputeOpacity(upload);
// Update the texture's opacity depending on the upload's opacity.
// If the upload covers the entire bounds of the texture, it fully
// determines the texture's opacity. Otherwise, it can only turn
// the texture's opacity into a mixed state (if it disagrees with
// the texture's existing opacity).
if (upload.Bounds == Bounds && upload.Level == 0)
{
Opacity = uploadOpacity.Value;
}
else if (uploadOpacity.Value != Opacity)
{
Opacity = Opacity.Mixed;
}
}
private void uploadCornerPadding(ITextureUpload upload, RectangleI middleBounds, int actualPadding)
{
RectangleI[] cornerBoundsArray =
{
new RectangleI(middleBounds.X - actualPadding, middleBounds.Y - actualPadding, actualPadding, actualPadding).Intersect(atlasBounds), // TopLeft
new RectangleI(middleBounds.X + middleBounds.Width, middleBounds.Y - actualPadding, actualPadding, actualPadding).Intersect(atlasBounds), // TopRight
new RectangleI(middleBounds.X - actualPadding, middleBounds.Y + middleBounds.Height, actualPadding, actualPadding).Intersect(atlasBounds), // BottomLeft
new RectangleI(middleBounds.X + middleBounds.Width, middleBounds.Y + middleBounds.Height, actualPadding, actualPadding).Intersect(atlasBounds), // BottomRight
};
int[] cornerIndices =
{
0, // TopLeft
middleBounds.Width - 1, // TopRight
(middleBounds.Height - 1) * middleBounds.Width, // BottomLeft
(middleBounds.Height - 1) * middleBounds.Width + middleBounds.Width - 1, // BottomRight
};
for (int i = 0; i < 4; ++i)
{
RectangleI cornerBounds = cornerBoundsArray[i];
int nCornerPixels = cornerBounds.Width * cornerBounds.Height;
Rgba32 cornerPixel = upload.Data[cornerIndices[i]];
// Only upload if we have a non-zero size and if the colour isn't already transparent black
if (nCornerPixels > 0 && cornerPixel != transparent_black)
{
var cornerUpload = new MemoryAllocatorTextureUpload(cornerBounds.Width, cornerBounds.Height)
{
Bounds = cornerBounds
};
for (int j = 0; j < nCornerPixels; ++j)
{
cornerUpload.RawData[j] = cornerPixel;
}
// For a texture atlas, we don't care about opacity, so we avoid
// any computations related to it by assuming it to be mixed.
base.SetData(cornerUpload, WrapMode.None, WrapMode.None, Opacity.Mixed);
}
}
}
/// <summary> /// Sets the pixel data of this <see cref="TextureGLAtlas"/>. /// </summary> /// <param name="upload">The <see cref="ITextureUpload"/> containing the data.</param> /// <param name="wrapModeS">The texture wrap mode in horizontal direction.</param> /// <param name="wrapModeT">The texture wrap mode in vertical direction.</param> /// <param name="uploadOpacity">Whether the upload is opaque, transparent, or a mix of both..</param> internal abstract void SetData(ITextureUpload upload, WrapMode wrapModeS, WrapMode wrapModeT, Opacity?uploadOpacity);
/// <summary> /// Sets the pixel data of this <see cref="TextureGL"/>. /// </summary> /// <param name="upload">The <see cref="ITextureUpload"/> containing the data.</param> public void SetData(ITextureUpload upload) => SetData(upload, WrapModeS, WrapModeT, null);
public abstract void SetData(ITextureUpload upload);
public override void SetData(ITextureUpload upload)
{
UploadComplete = false;
base.SetData(upload);
}