diff options
Diffstat (limited to 'randrproto.txt')
| -rw-r--r-- | randrproto.txt | 84 |
1 files changed, 81 insertions, 3 deletions
diff --git a/randrproto.txt b/randrproto.txt index af78361..953059d 100644 --- a/randrproto.txt +++ b/randrproto.txt @@ -194,14 +194,23 @@ just mark them as disconnected. 1.6. Introduction to version 1.6 of the extension -Version 1.6 adds resource leasing. +Version 1.6 adds resource leasing and non desktop output management. - • A 'Lease' is a collection of crtcs and outputs which are made + • A “Lease” is a collection of crtcs and outputs which are made available to a client for direct access via kernel KMS and DRM APIs. This is done by passing a suitable file descriptor back to the client which has access to those resources. While leased, those resources aren't used by the X server. + • A “non-desktop” output is a device which should not normally be + considered as part of the desktop environment. Head-mounted + displays and the Apple "Touch Bar" are examples of such + devices. A desktop environment should be able to discover which + outputs are connected to such devices and, by default, not present + normal desktop applications on them. This is done by having + RRGetOutputInfo report such devices as Disconnected while reporting + all other information about the device correctly. + 1.99 Acknowledgments Our thanks to the contributors to the design found on the xpert mailing @@ -772,6 +781,12 @@ dynamic changes in the display environment. monitor in some way; for fixed-pixel devices, this would generally indicate which modes match the resolution of the output device. + Changes in version 1.6 of the protocol: + + When a “non-desktop” device is connected, the 'connection' + field will report Disconnected but the remaining fields will + report information about the connected device. + ┌─── RRListOutputProperties output:OUTPUT @@ -783,6 +798,12 @@ dynamic changes in the display environment. This request returns the atoms of properties currently defined on the output. + Changes in version 1.6 of the protocol: + + When a “non-desktop” device is connected, the property list + will be correct for the device, even though RRGetOutputInfo + reports the device as disconnected. + ┌─── RRQueryOutputProperty output: OUTPUT @@ -814,6 +835,12 @@ dynamic changes in the display environment. changed by clients. Immutable properties are interpreted by the X server. + Changes in version 1.6 of the protocol: + + When a “non-desktop” device is connected, the property information + will be correct for the device, even though RRGetOutputInfo + reports the device as disconnected. + ┌─── RRConfigureOutputProperty output: OUTPUT @@ -932,6 +959,12 @@ dynamic changes in the display environment. is True and the bytes-after is zero, the property is also deleted from the output, and a RROutputPropertyNotify event is generated. + Changes in version 1.6 of the protocol: + + When a “non-desktop” device is connected, the property value + will be correct for the device, even though RRGetOutputInfo + reports the device as disconnected. + ┌─── RRCreateMode window: WINDOW @@ -1821,6 +1854,12 @@ factors, such as re-cabling a monitor, etc. precise change can be detected by examining the new state of the system. + Changes in version 1.6 of the protocol: + + When a “non-desktop” device is connected, this event will be + delivered when the connection status of the output changes, + however the 'connection' value will be set to 'Disconnected'. + ┌─── RROutputPropertyNotify: window: WINDOW window requesting notification @@ -1960,6 +1999,13 @@ as long as the semantics are not altered. Clients SHOULD fall back gracefully to lower version functionality, though, if the driver doesn't handle a mandatory property correctly. +Changes in version 1.6 of the protocol: + +When a “non-desktop” device is connected, the property information +will be correct for the device, even though RRGetOutputInfo +reports the device as disconnected. The “non-desktop” property will be +set to 1 for such devices and not present on other devices. + 9.1 Known properties "Backlight" aka RR_PROPERTY_BACKLIGHT @@ -2060,6 +2106,29 @@ doesn't handle a mandatory property correctly. output. Should include main EDID data and all extension blocks. Previously known as EdidData. + “non-desktop” aka RR_PROPERTY_NON_DESKTOP + Type: INTEGER + Format: 32 + Num items: 1 + Flags Immutable + Range/List: 0-1 + + Indicates whether the device attached to this output should not + be considered part of the normal desktop. When set to 0 or not + present, the output should be presented as part of the + desktop. + + When set to 1, the output should not be presented as part of + the desktop. To not present an output as part of the desktop, + the normal desktop environment should not be shown on this + output, nor should desktop applications be positioned on it. + + When set to 1, RRGetOutputInfo will always report connection status + Disconnected, but RROutputChangeNotify events will still be + delivered when the connection status changes and all other + information about the output and connected device will be + reported correctly. + "SignalFormat" aka RR_PROPERTY_SIGNAL_FORMAT Type: ATOM Format: 32 @@ -2250,6 +2319,13 @@ GUID yes not mandatory Property Immutable Mandatory since ──────── ───────── ─────────────── TILE yes not mandatory + +9.8 Properties introduced with version 1.6 of the RandR extension + +Property Immutable Mandatory since +──────── ───────── ─────────────── +non-desktop yes not mandatory + ❧❧❧❧❧❧❧❧❧❧❧ 10. Extension Versioning @@ -2288,6 +2364,8 @@ list of what each version provided: 1.5: Added Monitors + 1.6: Added Leases and non-desktop output information. + Compatibility between 0.0 and 1.0 was *NOT* preserved, and 0.0 clients will fail against 1.0 servers. The wire encoding op-codes were changed for GetScreenInfo to ensure this failure in a relatively @@ -2296,7 +2374,7 @@ graceful way. Version 1.1 servers and clients are cross compatible with compatibility from this point. Version 1.2 offers an extended model of the system with multiple output support. Version 1.3 adds a cheap version of GetScreenResources to avoid expensive DDC operations, CRTC transformations, -panning, and the primary output concept. Versions 1.2 through 1.4 are +panning, and the primary output concept. Versions 1.2 through 1.6 are backward-compatible with 1.1. ❧❧❧❧❧❧❧❧❧❧❧ |