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Rack/CHANGELOG.md

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VCV Rack changelog

In this document, Ctrl means Cmd on Mac.

2.4.0 (2023-08-06)

  • Add “View > Use dark panels if available” menu item.
  • Show module ID in module's Info menu.
  • Fix order of input MIDI messages having the same frame timestamp. This fixes VCV MIDI to CV from sometimes duplicating clock pulses when transport starts.
  • Core
    • Add dark panels.
  • Rack Pro
    • Add CLAP FX and Generator plugin adapters in addition to existing Instrument plugin.
    • Fix file dialogs from sometimes loading/saving the wrong Rack plugin instance when multiple instances are running.
    • Fix crash when using Mac VST3 and AU plugins simultaneously in a DAW.
    • Fix crash when removing one of multiple running plugin instances in Studio One.
    • Fix CLAP plugin discarding output MIDI messages.
  • API
    • Add ThemedSvgPanel and ThemedSvgScrew classes which automatically switch SVGs when dark panels are toggled.
    • Add "minRackVersion" property to plugin manifest, which prevents Rack from downloading plugin if version is not compatible.
    • Fix ContextCreateEvent and ContextDestroyEvent not defining vg NanoVG context.

2.3.0 (2023-03-08)

  • Add “View > Themes” menu with new UI themes: light and high-contrast dark.
  • Fix file permissions resulting in error when loading certain patches.
  • Don't select modules on click when module positions are locked.
  • Fix small memory leak when pasting modules or selections.
  • Fix incorrect panel scale when moving window between screens with different scale.
  • Rack Pro
    • Don't force MIDI output message channel to 1 in VST3 adapter. Offer all 16 channels.
    • Fix aftertouch and polyphonic pressure on all MIDI channels in VST3 and CLAP adapters.
  • API
    • Make ParamQuantity::set/getValue() set/get the Param's target value of the Engine's per-sample smoothing algorithm instead of the Param's immediate value. Add ParamQuantity::set/getImmediateValue(). Deprecate ParamQuantity::set/getSmoothValue().
    • Add dsp::polyDirect(), dsp::polyHorner(), and dsp::polyEstrin().
    • Rename dsp::approxExp2_taylor5() to dsp::exp2_taylor5() and improve polynomial coefficients.
    • Add color::lerp().
    • Add BooleanTrigger::processEvent() and SchmittTrigger::processEvent().
    • Add get() helper function for std::vector.

2.2.3 (2023-01-25)

  • Place module selection nearest to mouse position when pasted and nearest to the center of the rack viewport when imported.
  • Allow custom menu items to be appended to port's context menu.
  • Fix ignored MIDI input messages while using small audio block sizes.
  • Rack Pro
    • Fix hang when dialog box opens on Windows, such as after syncing library plugins.
    • Enable Loopback MIDI driver in all plugin adapters.
    • Fix MIDI CC output of VST3 adapter.
    • Fix Windows installer not overwriting existing VST3 plugin bundle on Windows.
    • Store and recall window size of VST3.
    • Fix MIDI clock input in CLAP adapter.
    • Make CLAP adapter a Note Effect and Audio Effect as well as an Instrument.
  • API
    • Make unarchiver handle zero-byte files as a special case by deleting destination files instead of overwriting them. This allows plugin packages to remove old presets by including a zero-byte file with its filename.
    • Add ModuleWidget::getModule<TModule>() convenience method.

2.2.2 (2022-12-27)

  • Display Rack edition, version, OS, CPU, and plugin type in menu bar to help with troubleshooting.
  • Add long-form command line options.
  • Zero audio output of all channels in audio::Device::processBuffer() before writing, to avoid sending uninitialized values to audio device.
  • Rack Pro
    • Fix blank plugin window on certain Linux Nvidia graphics drivers.
  • API
    • Don't include SIMDE headers on x64, fixing symbol conflicts when plugins include x64 intrinsic headers.
    • Don't export symbols from libarchive, zstd, rtaudio, and rtmidi to avoid conflicts with hosts that use these libraries. Rack plugins can no longer link to these libraries.
    • Rename plugin binary to plugin-arm64.dylib on Mac ARM64 so multiple plugin architectures can coexist in the same Rack user folder.

2.2.1 (2022-12-07)

  • Add CROSS_COMPILE environment variable to specify target triplet for building plugins for non-native architectures.
  • Accept aarch64 in target triplet as alias for ARM64.
  • Rack Pro
    • Re-enable rtaudio and rtmidi in plugin adapters, so hardware audio/MIDI devices can be used directly by Rack.
    • Fix VST3 not receiving MIDI CC input from DAWs.
    • Fix VST3 not sending MIDI output to some DAWs.
    • Fix VST3 in Bitwig resetting parameters when adding/removing modules.
    • Fix VST3 adapter not loading on Bitwig Linux and possibly other hosts, by providing VST3 as a folder bundle instead of a single file.
    • Fix CLAP adapter not loading on Windows, by statically linking libgcc.

2.2.0 (2022-11-23)

  • Add MIDI Loopback driver, allowing modules with MIDI ports to send MIDI messages to other modules.
  • Improve fuzzy search in module browser.
  • Allow building on ARM64 CPUs.
  • Rename plugin packages to SLUG-VERSION-OS-CPU.vcvplugin.
  • Rack Pro
    • Add VST3, Audio Unit, and CLAP plugin adapters.
    • Add framerate setting to plugins.
  • API
    • Add system::sleep().
    • Make random::get(), uniform(), etc use global random state instead of thread-local.

2.1.2 (2022-07-04)

  • Add old module moving behavior (nearest and force-moving), available by disabling “View > Auto-squeeze algorithm”.
  • Reorganized View menu.
  • Add version comparator so Rack only updates plugins or itself if the remote version is “greater” than the local version, as defined by the string::Version documentation.
  • Add file association to Mac, so double-clicking a .vcv patch file in Finder opens Rack and loads the patch.
  • Fix expanders not updating (connecting or disconnecting to adjacent modules) when cloning or removing modules.
  • Fix VCV Audio 2 VU meter light thresholds not matching label.

2.1.1 (2022-05-21)

  • Allow changing cable colors with port menu.
  • Fix placement bugs and improve behavior when moving or duplicating modules.
  • Fix probabilistic crash when undoing a module paste action.
  • Rack Pro
    • Fix VST2 window size not being remembered on Mac.
  • API
    • Make SvgButton dispatch ActionEvent only on left mouse down, instead of left/right mouse down and drag drop.

2.1.0 (2022-02-26)

  • Change behavior of force-moving modules so that other modules return to original position while dragging.
  • Update to RtMidi 5.0.0.
  • Update to RtAudio 5.2.0.
  • Update GLFW.
  • Fix plug graphic sometimes being incorrectly rotated.
  • Core
    • Add “Pitch bend range” setting to MIDI to CV module.
    • Fix MIDI to CV incorrectly setting pitch wheel and mod wheel outputs in MPE mode.
  • Rack Pro
    • Fix crash if generating hundreds of MIDI output messages per process block in VST2.

2.0.6 (2022-01-15)

  • Add “Save a copy” to File menu.
  • Remember CPU meter state across launches.
  • Use audio device's suggested sample rate as initial sample rate.
  • Add more logging of initialization/destruction of subsystems and module instantiation.
  • Make MIDI input queue thread-safe, fixing probabilistic crash when processing MIDI input.
  • Rack Pro
    • Generate MIDI Start message in DAWs like Cubase that pre-roll transport.
    • Generate MIDI Song Position Pointer messages when DAW is playing.
    • Fix VST2 input/output channel labels being truncated in Ableton Live.
    • Improve VST2 audio performance by avoiding unnecessary copying of buffers.

2.0.5 (2022-01-01)

  • Swap order of parameter name and module name in MIDI-Map.
  • Parse all note names from c0 to b9 and accidentals like c# and eb in parameter entry field.
  • Tweak framebuffer render-skipping algorithm to always render at least 1 framebuffer after the frame deadline, to prevent framebuffers from never being rendered.
  • Set audio device default sample rate to 44100, and block size to 256 except DirectSound to 1024.
  • Fix file dialog truncating Unicode filenames on Mac.

2.0.4 (2021-12-18)

  • Fix hang when initializing Audio module.
  • Fix hidden window after closing while minimized and reopening.
  • Move Import Selection menu item to File menu bar.
  • Switch from GTK3 to zenity for opening dialogs on Linux.
  • Implement prompt dialog on Windows.
  • Make Windows installer add Rack to list of CFA allowed apps, allowing Rack to write to “My Documents” folder if Controlled Folder Access is enabled.
  • Rack Pro
    • Improve stability of DAW MIDI clock.
    • Fix graphics glitch when duplicating module with Ctrl+D in Ableton Live.
    • Re-enable patch load error dialog.
  • SDK
    • Compile with -fno-omit-frame-pointer.

2.0.3b (2021-12-09)

  • Rack Pro
    • Use separate template patch when running as a plugin.

2.0.3 (2021-12-09)

  • Fix MIDI-Map not accepting MIDI CC.
  • Fix order of Audio-16 outputs 13/14 and 15/16.
  • Clear patch before removing autosave dir when loading patch. This fixes inability to load patches on Windows when modules hold file handles to patch storage.
  • Fix crash when patch attempts to add a cable that connects to a valid Port but an inexistent PortWidget (e.g. if a module defines a Port but omits the PortWidget).
  • Upgrade from ustar to pax tar patch format. Don't store actual uid/gid, just set to 0.
  • Rack Pro
    • Add external audio/MIDI drivers in plugin, except ASIO on Windows.
    • Show machine ID in splash window for offline activation.
    • Prevent “Reserved” plugin parameter from being changed when moving module parameters.

2.0.2 (2021-12-06)

  • Turn off lights if module is bypassed.
  • Fix Font and Image not loading UTF-8 filenames on Windows.
  • Fix plugins not loading if their fallback alias exists.
  • Fix crash when sometimes unsetting audio interface on Mac.
  • Rack Pro
    • Save/restore plugin window size in patch.
    • Fix crash on scan in Renoise.

2.0.1 (2021-12-02)

  • Fix network connection timeout.
  • Flush log file when logging to avoid truncated logs.

2.0.0 (2021-11-30)

  • Redesign Module Browser with compact layout, adjustable zoom levels, sorting options, intelligent searching, and multiple tag selection.

  • Redesign component graphics and Core panels by Pyer.

  • Add port tooltips with name, voltage, and list of connected ports.

  • Add port context menu with ability to create cables with a particular color, drag any cable from the stack, or delete the top cable.

  • Evaluate mathematical expressions (such as 1+2*3) in parameter context menu fields.

  • Add multiple module selection by highlighting a rectangle or Shift-clicking on a module panel.

  • Add importing/exporting module selections to new .vcvs file format.

  • Add module whitelist to Module Browser which synchronizes individual modules chosen in the VCV Library.

  • Add favorite modules filter to Module Browser.

  • Restructure engine to no longer use an “engine thread”.

    • Improve engine performance and latency by no longer requiring thread synchronization between the engine thread and audio thread. The engine now runs directly on the audio thread.
    • Add support for multiple simultaneous audio devices.
    • Add “Master module” context menu item to VCV Audio modules to select which audio device clocks the engine.
    • Allow other modules to be the primary module, such as VCV Recorder for rendering audio faster than real-time.
    • Remove “Real-time priority” menu item, since the thread priority is now managed elsewhere (RtAudio, etc).
    • Remove engine pausing as it no longer makes sense with the new engine architecture.

  • Replace module disabling with bypassing, which directly routes certain inputs to outputs if specified by the plugin.

  • Duplicate cables patched to inputs when a module is duplicated.

  • Add module tags to module context menu.

  • Add module manual URL (if plugin developer supplies it) to module context menu item.

  • Add quick access to user module patches from <Rack user dir>/presets/<plugin slug>/<module slug> to module context menu. Supports subdirectories.

  • Add infinity and NaN protection to cables, so they won't propagate non-finite values from badly behaving modules.

  • Add basic headless support with the -h flag.

  • Add multiple parameter dragging modes: scaled linear, absolute rotary, and relative rotary.

  • Add “knobLinearSensitivity” property to settings.

  • Add timestamps to MIDI messages.

  • Allow sending and receiving SysEx messages through MIDI drivers.

  • Allow scrolling with Alt+click and drag.

  • Add “File > Open recent” menu item for opening recent patches.

  • Add “Preset > Save template” to module context menu which saves the default module preset to load when a new instance is added to the rack.

  • Break Rack executable into libRack shared library and lightweight standalone Rack executable.

  • Add support for 1/2x and 1/4x low-fidelity sample rates to engine and “Engine > Sample rates” menu.

  • Add Escape key command for existing fullscreen, in case F11 doesn't work.

  • Copy cable color when cloning cables with Ctrl+click.

  • Fix key commands on AZERTY, Dvorak, and all other keyboard layouts.

  • Add Mouse device to Computer keyboard/mouse MIDI driver.

  • Make scrollbar mouse interaction similar to modern OS behavior.

  • Re-render framebuffers when subpixel offset changes, fixing bug that makes ports and knobs appear slightly offset at certain zoom levels.

  • Use new .vcv patch format, an archive (POSIX tar compressed with Zstandard) of a patch.json file, module patch assets, and potentially other future files.

  • Use randomly-generated 53-bit IDs to identify modules and cables in the patch.

  • Use a fuzzy search algorithm for searching modules in the Module Browser.

  • Add tips window which appears when Rack launches or when choosing “Help > Tips”.

  • Check for Library updates every few seconds to avoid needing to restart Rack to check for updates.

  • When clicking on a module in the Module Browser and immediately releasing, place the module in the last cursor position in the rack, rather than the current cursor position.

  • When clicking and dragging a module from the Module Browser, fix the mouse handle offset to the center of the module.

  • Allow darkening rack brightness.

  • Draw spotlight near cursor when rack brightness is lowered.

  • Improve light rendering with a more physical blending algorithm.

  • Add engine CPU meter and framerate meter to menu bar.

  • Allow zooming rack with extra mouse buttons 4 and 5.

  • Add "pixelRatio" to settings for forcing the UI pixel scale.

  • If Ctrl+clicking on any menu item, the menu stays open (except for some menu items like “Delete Module”).

  • Add Ctrl+F1 key command when cursor is hovering a module to open its user manual.

  • Redesign CPU meter with percentage history graph.

  • Add PulseAudio driver on Linux.

  • Distribute .pkg installer on Mac.

  • Check for VCV Library updates when Library menu is opened, rather than at time intervals.

  • Core

    • Add Audio-2 module with stereo input/output, a level knob, and VU meters.
    • Add DC blocker setting to Audio modules. On Audio-2, enable it by default.
    • Add MPE mode to MIDI-CC and MIDI-Gate.
    • Add mode to MIDI-CC to process 14-bit MIDI CC via MSB/LSB.
    • Use MIDI timestamps in MIDI-CV, MIDI-CC, MIDI-Gate, and MIDI-Map to improve overall timing and drastically reduce clock jitter.
    • Add red clip lights to VCV Audio-8/16 when signal reaches beyond ±10V.
    • Reset notes in MIDI-CV and MIDI-Gate if an “all notes off” MIDI message is received.
    • Allow disabling smoothing for MIDI-CV (pitch and mod wheel), MIDI-CC, and MIDI-Map.
    • Add several module presets for many Core modules.

  • API

    • Add setters/getters for nearly every instance variable in Rack's API. Use these for higher likelihood of stability.
    • Compile Rack and plugins with -march=nehalem, enabling (and requiring) up to SSE4.2 and POPCNT instruction sets.
    • Add Module::configInput() and Module::configOutput() for adding names to ports.
    • Replace ParamWidget::paramQuantity with ParamWidget::getParamQuantity().
    • Add .modules[].manualUrl to plugin manifest schema.
    • Add appendAudioMenu() and appendMidiMenu() so plugin developers can develop custom audio/MIDI interfaces without adding an AudioWidget/MidiWidget to their panel.
    • Make Module::toJson() and fromJson() virtual.
    • Add Module::paramsToJson() and paramsFromJson() virtual methods.
    • Add SwitchQuantity and a helper method Module::configSwitch() for displaying named values in the parameter context menu. Also add Module::configButton() recommended for momentary switches with no value labels.
    • Overhaul Engine threading model to allow as many Engine methods to be called simultaneously as possible, while ensuring that Module events are mutually exclusive to module processing.
    • Add Engine::getNumModules() and Engine::getModuleIds().
    • Add event::KeyBase::keyName. Plugins should use this instead of key for alphanumeric keys in order to support all keyboard layouts.
    • Improve thread safety of dsp::RingBuffer.
    • Add several convenient filesystem routines to system::.
    • Add system::getTime() and getUnixTime().
    • Add system::readFile() and writeFile().
    • Move all string:: functions dealing with filesystem paths to system::.
    • Change type of Module::id and Cable::id from int to int64_t.
    • Move event classes to inside widget::Widget class.
    • Deprecate Window::loadSvg(). Un-deprecate Svg::load().
    • Font and Image can no longer be stored across UI frames. Load them with APP->window->loadFont() and loadImage() each draw() method.
    • Add Widget::hasChild(), addChildBottom(), addChildBelow(), addChildAbove(), and drawChild().
    • Add Module::createPatchStorageDirectory() and getPatchStorageDirectory().
    • Add createMenuLabel(), createMenuItem(), createCheckMenuItem(), createBoolMenuItem(), createBoolPtrMenuItem(), createSubmenuItem(), createIndexSubmenuItem(), and createIndexPtrSubmenuItem() to helpers.
    • Add Module::onReset() and onRandomize(). Overrides default param resetting and randomization behavior if overridden, unless super methods are called.
    • Add Module::SaveEvent.
    • Add operator overloads for Vec.
    • Add string::join(), split(), formatTime(), and formatTimeISO().
    • Add random::Xoroshiro128Plus which can be used like C++ <random> classes.
    • Add Port::getVoltageRMS().
    • Add Widget::drawLayer() for handling multiple draw passes.
    • Add on/off threshold values to dsp::SchmittTrigger.
    • Add dsp::convert() template functions for converting audio between normalized floats and integers.
    • Add bool app::SvgSwitch::latch setting for latching button switches.
    • Dispatch Module::SampleRateChange event when Module is added to engine.

1.1.6 (2019-11-04)

  • Add ability for plugins to use LuaJIT on Mac.
  • Fix normal random number generator possibly returning -infinity.
  • Core
    • MIDI-Map: Don't move param until the first MIDI CC command is sent.
  • API
    • Remove support for namespaced rack::APP, rack::DEBUG, etc macros. Use namespace-less APP, DEBUG, etc instead.
    • Add dsp::IIRFilter.

1.1.5 (2019-09-29)

  • Swap order of tags and brands in Module Browser.
  • Add View > Frame rate menu bar item.
  • Hide menu and scrollbars when fullscreen.
  • Add key command (F3) for engine CPU meter.
  • Add numpad key commands.
  • Automatically unzip update on Mac.
  • Stop worker threads when engine is paused to save CPU.
  • Core
    • Disable smoothing for MIDI CC buttons in MIDI-Map.
    • Fix sustain pedal release bug when using polyphonic mode in MIDI-CV.
  • API
    • Add libsamplerate library.

1.1.4 (2019-08-22)

  • Fix parameter smoothing of MIDI-Map.
  • Sort modules within plugin in the Module Browser according to plugin rather than alphabetically.
  • Fix bug where knobs sometimes jump while dragging.
  • Reimplement CPU meter to measure thread runtime, not real time.
  • Fix crashes when deleting/duplicating modules while dragging modules/cables in certain cases.
  • API
    • Add dsp::BiquadFilter.
    • Add dsp/approx.hpp with approximate math functions.
    • Add simd::tan(), atan(), and atan2().
    • Add string::toBase64() and fromBase64().

1.1.3 (2019-07-23)

  • Include root certificate bundle for libcurl on all OS's.
  • Revert to OpenSSL from Schannel on Windows.
  • Bundle unsigned Fundamental package on Mac.

1.1.2 (2019-07-20)

  • Add app notarization on Mac, which removes the “Apple cannot check for malicious software” message on launch.
  • Write stack trace to log.txt and display dialog box when Rack crashes.
  • Re-enable JACK MIDI driver on Linux.
  • Fix scroll speed for mice and trackpads on Mac.
  • Fix undo history bug when dragging patch file to the Rack window.
  • Fix crash when pasting presets to an empty rack space with Ctrl+V.
  • Fix module expanders being assigned incorrectly when loading presets.
  • Add check for duplicate port IDs for modules.

1.1.1 (2019-07-01)

  • Add auto-updating on Windows when Help > Update VCV Rack is clicked.
  • Fix extension filters in open/save dialog box on Windows.
  • Fix expanders not attaching when force-dragging modules.

1.1.0 (2019-06-27)

  • Request microphone access on Mac to prevent Mac 10.14+ from blocking audio input.
  • Clear filters in Module Browser when backspace is pressed while the search field is empty.
  • Add Ctrl+0 key command to set zoom to 100%.
  • Emulate middle-click with Ctrl+shift-click on Mac.
  • Fix MIDI receiving in Bridge MIDI driver.
  • Fix opening/saving UTF-8 filenames on Windows.
  • Fix bug where cable ID's were not being set in .vcv patches.
  • Plugin API
    • Add string::absolutePath().
    • Use namespace for Core plugin to avoid name clashes.

1.0.0 (2019-06-19)

  • Add polyphonic cables.
  • Add multithreading to engine.
  • Add undo/redo history.
  • Add module expander support.
  • Add parameter labels, units, and descriptions.
  • Add parameter tooltips for quickly viewing parameter values.
  • Add parameter context menu for entering numerical values, unmapping, etc.
  • Change parameter initialization to double-click.
  • Add ability to Ctrl+click on an input port to clone the existing cable.
  • Add module “force” dragging when holding Ctrl.
  • Add ability to disable modules with a context menu item and key command Ctrl+E.
  • Add sample rates up to 768,000 Hz (16 x 48,000 Hz).
  • Overhaul Module Browser with visual previews of modules.
  • Add plugin info sub-menu to module context menu with links to manual, website, source code, etc.
  • Add factory presets to module context menu if plugin supplies a folder of presets.
  • Add default template patch.
  • Add menu item to save the current patch as the template.
  • Add “frameRateLimit” and “frameRateSync” for setting maximum screen refresh rate and to toggle vertical sync.
  • Add “autosavePeriod” for setting the frequency of autosaves in seconds.
  • Add textual menu bar, rearranged menu items, removed icons.
  • Make CPU timer display microseconds and percentage instead of millisamples.
  • Add engine real-time priority setting.
  • Make rack infinite in all four directions.
  • Add bus board graphic to rack.
  • Add key command Ctrl+- and Ctrl+=, or Ctrl+scroll, for zooming the rack.
  • Fix draw order of cable plugs and wires.
  • Make Gamepad MIDI driver generate MIDI CC instead of MIDI notes for buttons.
  • Add Numpad keyboard MIDI device.
  • Fix Unicode user directories on Windows.
  • Add ability to change cable colors in settings.json.
  • Add -p X flag for dumping a screenshot of each available module.
  • Allow user to see changelogs of plugins before updating their plugin library.
  • Allow user to update individual plugins.
  • Core
    • Add Audio-16 with 16/16 inputs/outputs.
    • Add CV-MIDI, CV-CC, and CV-Gate for sending MIDI to external devices.
    • Add MIDI-Map for mapping MIDI CC parameters directly to Rack parameters.
    • Add polyphony to MIDI-CV.
    • Add MPE mode to MIDI-CV.
    • Add “Panic” button to all MIDI modules to reset performance state.
  • Plugin API
    • Add helper.py for creating and manipulating plugins with the command-line.
    • Add simd.hpp for generically handling arithmetic and math functions for vectors of floats, accelerated with SSE.
    • Add dsp::VuMeter2.
    • Add dsp::Timer and dsp::Counter.
    • Overhaul event system with many new events.
    • etc. See more at https://vcvrack.com/manual/Migrate1.html.
  • Licenses
    • Relicense Rack to GPLv3 with the VCV Rack Non-Commercial Plugin License Exception and a commercial licensing option.
    • Collect all license statements into new LICENSE.md file.
    • License Core panel graphics under CC BY-NC-ND 4.0.

0.6.2 (2018-07-13)

0.6.1 (2018-06-17)

  • Add gamepad MIDI driver.
  • Add computer keyboard MIDI driver.
  • Add JACK support on Linux.
  • Add velocity mode to MIDI-Trig.
  • Add MIDI multiplexing so multiple MIDI modules can use the same MIDI device on Windows.
  • Make Module Browser layout more compact.
  • Add power meter.
  • Add icons to toolbar.
  • VCV Bridge 0.6.1
    • Replace VST effect plugin with VST instrument plugin with audio inputs.
    • Add MIDI support.
    • Add DAW transport and clock.

0.6.0 (2018-03-29)

  • Release VCV Bridge for interfacing Rack with your DAW.
    • VST/AU effect plugins (Mac and 32/64-bit Windows) for using Rack as a send/return on a DAW track.
    • Enables future VSTi/AU instrument plugins with MIDI and DAW clock transport to be added in a later Rack 0.6.* update.
  • Updated Plugin Manager to handle open-source plugins.
    • Potentially all plugins can be added with help from the VCV Community.
  • New Module Browser for adding modules to the rack.
    • Launch by right-clicking on the rack or pressing .
    • Add “favorite” modules by clicking on the star button.
    • Navigate modules with arrow keys or mouse.
  • Redesign Core modules.
    • Access to audio channels beyond the first 8 inputs/outputs.
    • Improve AUDIO stability.
    • Add retrigger output to MIDI-1.
    • Merged MIDI clock module with MIDI-1.
    • Fix MIDI-4 sustain pedal in polyphonic modes.
  • Improve sample rate conversion performance, is disabled entirely when not needed.
  • Patch cable colors are saved to patch files.
  • Add highlighting for active patch cables when hovering mouse over port.
  • Add shadows to knobs and ports.
  • Add File > “Disconnect cables”.
  • Release Rack SDK for compiling plugins without compiling Rack.

0.5.1 (2017-12-19)

  • Add Plugin Manager support.
  • Fix metadata panel in the Add Module window.

0.5.0 (2017-11-21)

  • Add zoom scaling from 25% to 200%.
  • Automatically scroll when dragging cables to the edge of the screen.
  • Add Quad MIDI-to-CV Interface, CC-to-CV, Clock-to-CV, and Trigger-to-CV MIDI interfaces.
  • Improve support for ASIO, WASAPI, DirectSound, Core Audio, and ALSA audio drivers.
  • New module browser with search and tags.
  • Enhanced LED emulation in graphics engine.
  • File > New attempts to load “template.vcv” in the “Documents/Rack” folder if it exists.

0.4.0 (2017-10-13)

  • Cables can now stack on output ports.
  • Add sub-menus for each plugin, includes optional plugin metadata like URLs.
  • Add MIDI CC-to-CV Interface, updated MIDI-to-CV Interface.
  • Add new scrolling methods: middle-click-and-drag, shift-scroll, and arrow keys.
  • Add engine pausing in sample rate menu.
  • Add resizable blank to Core.
  • Add LEDs on plugs.
  • Support for AMD Phenom II processors.
  • Use self-contained Mac app bundle, no need for a Rack folder.

0.3.2 (2017-09-25)

  • Add key commands.
  • Fix “invisible knobs/ports” rendering bug for ~2010 Macs.
  • Add “allowCursorLock” to settings.json (set to “false” for touch screen support).
  • Fix 100% CPU issue when no audio device is selected.
  • Add vector scaling panels.

0.3.1 (2017-09-13)

  • Fix Windows open dialog current working directory graphics problem.
  • Ctrl+C/Ctrl+V to copy/paste from text and password fields.
  • Automatically remember settings and login token between launches.
  • Remove .zip after downloading and extracting plugin.
  • Ctrl+click to right click on Mac.
  • Fix menu “flicker” when menu cannot fit in window.
  • tweaks to Fundamental and Audible Instruments plugins.

0.3.0 (2017-09-10)

  • Knobcon public Beta release.