4.0.1 beta build 5305 is now available

This update is focused on fixing some important crashes, bricks, functionality issues, and performance optimizations.

You can get it via the built-in updater in 4.0 if you have "Also check for pre-release (beta) versions of" enabled in Settings -> Updates.

You will need to download this directly from the website in order to install it: . As it turns out, there’s a teeny tiny bug in 4.0 Final which causes it to basically just ignore your setting for "Also check for pre-release (beta) versions." Oops πŸ™‚

Changes since 4.0:

  • Move Selected Pixels tool performance has been significantly optimized.
  • Move Selected Pixels tool was always leaving transparent black behind instead of the secondary color with alpha removed.
  • Brush tools with odd-sized brushes and no antialiasing were drawing at 1 size smaller.
  • Fixed some apparent ‘lag’ in the brush tools due to an off-by-1 glitch in the stroke path calculation code.
  • The brush tool preview circle no longer scales by the system DPI setting, which made it too big.
  • Removed the momentary hourglass/wait cursor after drawing (e.g. pencil and brush tools).
  • Optimized performance of the Shapes tool, especially for the Ellipse shape.
  • Paint Bucket tool will now correctly treat the selection as a boundary contour.
  • Zoom tool no longer crashes sometimes when pressing the right mouse button while already holding the left mouse button.
  • The status bar now reports the correct selection location when it’s outside the image boundaries (e.g. negative values).
  • Auto-scrolling on the edge of the window now works correctly and doesn’t require you to "jiggle the mouse" for each scroll update.
  • Touch screens no longer scroll when swiping up/down with one finger.
  • Improved the pixel grid’s contrast so it’s not overwhelmingly bright.
  • The transparency "checkerboard" is now aligned to the top-left of the image, instead of the top-left of the canvas.
  • The cursor position reported in the status bar was off-by-1 when the value was supposed to be negative.
  • Some controls (e.g. units selection in the Image->Resize dialog) were not drawing focus rectangles when using the keyboard.
  • Fixed a crash (OutOfMemoryException) when using a selection tool when hardware acceleration is disabled.
  • Fixed a crash (TimeBeforeLastUpdateException) in the installer. This usually happens when running in a virtual machine, and only affects animations.
  • Fixed a crash (BadImageFormatException) at startup. This indicates an installation error, and will be automatically repaired.
  • Fixed various crashes caused by having the wrong (old) version of PaintDotNet.SystemLayer.Native.dll. This indicates an installation error, and will be automatically repaired.
  • Improved performance when hardware acceleration is disabled.
  • All 7th generation Intel GPUs now default to hardware rendering. All older Intel GPUs default to software rendering.
  • Fixed graphical artifacts (blackness, flickering, mouse trails) on certain GPUs (e.g. NVIDIA Optimus).
  • "NVIDIA ION" graphics cards now default to software rendering due to crashes.



12 thoughts on “ 4.0.1 beta build 5305 is now available

  1. TimothyC says:

    I just got this update info in the program, even though I don’t have the “lso check for pre-release (beta) versions of” enabled. Might this be a bug?

    • Rick Brewster says:

      Thanks, I’m looking into this right now … EDIT: Confirmed. 4.0 Final is currently offering everyone the 4.0.1 Beta due to a 1 character typo in the code. Well, 4.0.1 Final will be going out soon anyway … πŸ™‚ EDIT 2: I’ve removed it from the updater. Anyone who wants 4.0.1 Beta will need to download the ZIP directly, and I’ve added a link up above.

  2. Dan says:

    Thanks, downloading now…

    BTW, is there any way to make PDN *not* remember recent image history? I wish you’d make that an option, please.

  3. Dan says:

    One more thing – hardware accelerated rendering was disabled for me by default after installation, but enabling it doesn’t seem to have caused any ill effects although I can’t tell if there’s any improvement at all. Should I leave it unchecked?

    • Rick Brewster says:

      If it works, I highly recommend leaving it enabled! Even if you don’t notice a performance improvement, it will at least use less CPU. Which means longer battery life.

    • Rick Brewster says:

      I don’t have an NVIDIA ION to test with, and that still wouldn’t help all the systems which don’t have up-to-date drivers (assuming that would fix it). If you have an NVIDIA ION and you’re confident that it’ll work with hardware acceleration then you can still enable it in the Settings dialog.

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