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Alt 13.06.2019, 00:37   #1
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Standard [GIMP News] - GIMP 2.10.12█Released

GIMP 2.10.12 is mostly a bug fix release as some annoying bugs werediscovered, which is to be expected after a 2.10.10 with so many changes!

“Don’t squash bugs… free them!”, by Aryeom, CC BY-SA 4.0 (a poetic approach to debugging)Still, some very cool improvements are also available:
  • Improved Curves tool
  • Layers support for TIFF exporting
  • Support for user-installed fonts on Windows
  • Faster painting
  • Improved symmetry painting support
  • Incremental mode in the Dodge/Burn tool
  • Free Select tool now creates a preliminary selection
  • New Offset tool
Improvements and features¶

Improving curves editing and Curves tool¶

Generic curves interaction¶

The interaction with curves in general has been greatly enhanced, whichis an improvement both to the Curves tool and all other places wherecurves need tweaking (currently paint dynamics and input device settings):

Relative motion when dragging points¶

When dragging an existing curve point, it won’t “jump” anymore to thecursor position upon pressing the button. Instead it will moverelatively to its current position as the cursor moves. This allowsselecting a point with a quick click without moving it, and adjustinga point position more easily.

Additionally, when the cursor hovers above a point, or when dragging apoint, the coordinate indicator now show the point’s position, ratherthan the cursor’s.

Snap to curve when holding Ctrl¶

When holding down Ctrl while adding or dragging a point, theY-coordinate will snap to the original curve. This is particularlyuseful for adding points along the curve.

Likewise, the coordinate indicator shows the snapped coordinates.

Curves tool specific interaction¶

Additionally, some improvements are specific to the Curves tool:

Numeric input of Curves tool points¶

Two new spin-buttons labelled “Input” and “Output” are now availablein the Curves tool interface. They allow setting the selected point’scoordinates numerically and accurately if needed.

Add smooth or corner curve-point types¶

Control points can now be either smooth or corner points.Smooth points produce a smooth curve, while corner points result insharp angles (previously, all points were smooth and this is still the default).

Corner points are displayed using a diamond shape, instead of a circleand the type can be changed in the Curves tool.

TIFF now has layer support!¶

Thanks to Tobias Ellinghaus, well known as a darktabledeveloper, TIFF can now export images without merging layers.

Support of user-installed fonts on Windows¶

Though not fully tested, we now have a temporary support of a newWindows 10 feature. Windows 10 users indeed now have the ability toinstall fonts without adminpermissionssince a recent update.

Therefore we added this non-admin font folder to our search path whenrunning GIMP. It should be only a temporary workaround since eventuallythis should besupportedby fontconfig, the upstream library used to manage fonts.

Note also that it is not fully tested because of our lack of Windowsdevelopers. Therefore we are mostly hoping it will work as expected, andthis is a good time to make a call again:
Are you a Windows developer? Do you love GIMP? Please contribute!

Seriously, none of our current developers use Windows and bugs arepiling up in our bug tracker for this platform (same can be said onmacOS by the way), whereas GIMP is so enjoyably stable on GNU/Linux. Weare happy to do the occasional good deeds, but there are limits to whatwe can do for a platform we don’t use. On the other hands, we happilywelcome patches and new contributors!

Faster painting¶

GIMP now doesn’t replace the paint buffer on every dab if the paintcolor/pixmap hasn’t changed. This results in faster painting on specific cases.

As a by-product of the change, the color-from-gradient dynamics is nowfixed when the image has a color profile.

Incremental mode in the Dodge/Burn tool¶

The Dodge/Burn tool got a new “Incremental” option which,similarly to the Paintbrush, Pencil, and Eraser tools, applies theeffect incrementally as the pointer moves.

Free Select tool creates preliminary selection¶

One of GIMP 2.10.0 changes which annoyed many people was that the FreeSelect tool was not creating a selection immediately when the regionwas closed. One was forced to perform an additional confirmation step(Enter or double-click).

This was done on purpose because we wanted to leave ability to tweak thepolygonal selection that is built into the Free Select tool. Yet it couldobviously be better, proof being the Rectangle Select tool which stillallowed to edit the rectangle even though a selection was pre-created.

The Free Select tool now works the same way: even though a preliminaryselection exists (allowing to directly copy or delete a contents withoutadditional step), you will still be able to edit this free selection aslong as you don’t start another selection nor change tools.

New Offset tool¶

New Offset tool shifts pixels and optionally wraps them around the edgesso that you could create repeatable patterns.

New Offset tool used to make a repeatable heart patternThere’s a simple on-canvas interaction available: just drag on the canvasto shift the layer.

You can activate the new filter either via Layer > Transform > Offset menu,or via Shift+Ctrl+O shortcut.

Moving an intersecting pair of guides¶

The Move tool can now move together an intersecting pair of guides. bydragging the guides at their point of intersection. This is useful whenthe guides are used to mark a point, rather than a pair of lines (e.g.,as is the case for the mandala symmetry guides, which mark thesymmetry’s point of origin).

Bug fixing¶

Many bugs were fixed, some more severe than others (in particular afew crashes), as well as some code cleaning, factorization, and so on.The usual deal!

More than the new features, we actually thought these issues were enoughto warrant this new release.

Among most pesky bugs fixed:
  • crashes for various reasons, with more crashes to fix yet;
  • various color management related bugs;
  • unwanted change of foreground and background colors in tools’ presets;
  • brush transformation improved and fixed in various places in symmetry painting mode;
  • a few localization bugs, and most importantly broken translation display for several supported languages (so far, we believe it to be a bug in the Pango dependency);
  • some brush format bugs;
And more. GIMP 2.10.12 is the result of about 200 commits in 2 months!We will focus below on two specific bug fixing which deserve mentioning.

Improved symmetry painting support¶

The symmetry painting backend got some improvements, which resulted in afew fixes, in particular some artifacts could occur with big brushes orin the Clone/Heal tool when the brush was cropped to the bounds of adrawable. These are now fixed.

In the Ink tool as well, the brush shape was not properly transformed.This has been fixed as well.

Just open the Symmetry Painting dockable dialog, choose a type ofsymmetry and paint away!

Color space mixup on exporting images¶

Several people noticed that exporting some images ended up in washed-upcolors sometimes. This was because in some cases, we were exporting byerror sRGB colors with a linear profile (especially visible in GIMP2.10.10 since we were exporting profiles by default even when using adefault GIMP profile). We fixed this and took the opportunity to improveGIMP’s export logics.

Now we are always exporting an explicitly set profile as-is, and pixelcolors are stored according to this profile expectation. If you manuallyassigned a profile, GIMP should indeed always follow your request.

On the other hand, if no explicit profile was set, we implementedvarious strategies depending on the format:
  • If the export format is able to store high-bit depth colors (e.g. PNG up to 16-bit and TIFF up to 64-bit), we follow the work format.
  • If the export format is 8-bit only (such as JPEG), we transform the data to sRGB in order to avoid posterization and shadow artifacts (except if your work format is 8-bit linear, then we leave it as 8-bit linear for minimal loss).
Note that there are still edge cases which we may not find optimal yetregarding how profiles are handled. These should all be greatly improvedwhen we will merge the “Space Invasion” code (an ongoing mid-termproject, as we were already talking about it when releasing GIMP2.10.8).This code merge should hopefully happen soon enough!

Around GIMP¶

GEGL and babl¶

During this development span, GEGL 0.4.16 got released (91 commits), aswell as babl 0.1.64 (31 commits) and 0.1.66 (7 commits).

The biggest user-visible change is probably the cubic samplercoefficient change, which used to produce smooth interpolation, suitablefor some cases, but not as sharp as people would expect in most othercases. Now in all places where there is choice of interpolation (alltransformation tools, Warp Transform tool, etc.), the result with cubichas changed and produces sharper results.

Another notable improvement in GEGL is an updated memory management, byconditionally freeing memory from the heap (thanks to manual calls ofmalloc_trim()), hence forcing the underlying libc to release memorymore often. This behavior is especially suitable for long-runningapplications whose memory need can greatly vary, such as GIMP.In practice, it means that GIMP process’ memory size will now shrinkmuch faster when you will close big images on supporting systems.

What’s next¶

Though it gets less visibility, work on upcoming GIMP 3 continues andis going well. We will give more news soon enough. For the time being,don’t forget you can donate to the project and personally fund severalGIMP developers, as a way to give backand to accelerate GIMP development.

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