1818d21da5
Virtual monitors are monitors that isn't backed by any monitor like hardware. It would typically be backed by e.g. a remote desktop service, or a network display. It is currently only supported by the native backend, and whether the X11 backend will ever see virtual monitors is an open question. This rest of this commit message describes how it works under the native backend. Each virutal monitor consists of virtualized mode setting components: * A virtual CRTC mode (MetaCrtcModeVirtual) * A virtual CRTC (MetaCrtcVirtual) * A virtual connector (MetaOutputVirtual) In difference to the corresponding mode setting objects that represents KMS objects, the virtual ones isn't directly tied to a MetaGpu, other than the CoglFramebuffer being part of the GPU context of the primary GPU, which is the case for all monitors no matter what GPU they are connected to. Part of the reason for this is that a MetaGpu in practice represents a mode setting device, and its CRTCs and outputs, are all backed by real mode setting objects, while a virtual monitor is only backed by a framebuffer that is tied to the primary GPU. Maybe this will be reevaluated in the future, but since a virtual monitor is not tied to any GPU currently, so is the case for the virtual mode setting objects. The native rendering backend, including the cursor renderer, is adapted to handle the situation where a CRTC does not have a GPU associated with it; this in practice means that it e.g. will not try to upload HW cursor buffers when the cursor is only on a virtual monitor. The same applies to the native renderer, which is made to avoid creating MetaOnscreenNative for views that are backed by virtual CRTCs, as well as to avoid trying to mode set on such views. Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1698>
192 lines
5.2 KiB
C
192 lines
5.2 KiB
C
/*
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* Copyright (C) 2017 Red Hat
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* Copyright (C) 2020 NVIDIA CORPORATION
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#ifndef META_OUTPUT_H
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#define META_OUTPUT_H
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#include <glib-object.h>
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#include "backends/meta-backend-types.h"
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#include "backends/meta-gpu.h"
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#include "core/util-private.h"
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struct _MetaTileInfo
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{
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uint32_t group_id;
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uint32_t flags;
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uint32_t max_h_tiles;
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uint32_t max_v_tiles;
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uint32_t loc_h_tile;
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uint32_t loc_v_tile;
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uint32_t tile_w;
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uint32_t tile_h;
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};
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/* The first 17 matches the values in drm_mode.h, the ones starting with
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* 1000 do not. */
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typedef enum
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{
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META_CONNECTOR_TYPE_Unknown = 0,
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META_CONNECTOR_TYPE_VGA = 1,
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META_CONNECTOR_TYPE_DVII = 2,
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META_CONNECTOR_TYPE_DVID = 3,
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META_CONNECTOR_TYPE_DVIA = 4,
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META_CONNECTOR_TYPE_Composite = 5,
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META_CONNECTOR_TYPE_SVIDEO = 6,
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META_CONNECTOR_TYPE_LVDS = 7,
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META_CONNECTOR_TYPE_Component = 8,
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META_CONNECTOR_TYPE_9PinDIN = 9,
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META_CONNECTOR_TYPE_DisplayPort = 10,
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META_CONNECTOR_TYPE_HDMIA = 11,
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META_CONNECTOR_TYPE_HDMIB = 12,
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META_CONNECTOR_TYPE_TV = 13,
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META_CONNECTOR_TYPE_eDP = 14,
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META_CONNECTOR_TYPE_VIRTUAL = 15,
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META_CONNECTOR_TYPE_DSI = 16,
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META_CONNECTOR_TYPE_META = 1000,
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} MetaConnectorType;
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typedef struct _MetaOutputInfo
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{
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grefcount ref_count;
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char *name;
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char *vendor;
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char *product;
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char *serial;
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int width_mm;
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int height_mm;
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CoglSubpixelOrder subpixel_order;
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MetaConnectorType connector_type;
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MetaMonitorTransform panel_orientation_transform;
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MetaCrtcMode *preferred_mode;
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MetaCrtcMode **modes;
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unsigned int n_modes;
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MetaCrtc **possible_crtcs;
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unsigned int n_possible_crtcs;
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MetaOutput **possible_clones;
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unsigned int n_possible_clones;
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int backlight_min;
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int backlight_max;
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gboolean supports_underscanning;
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gboolean supports_color_transform;
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/*
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* Get a new preferred mode on hotplug events, to handle dynamic guest
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* resizing.
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*/
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gboolean hotplug_mode_update;
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int suggested_x;
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int suggested_y;
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MetaTileInfo tile_info;
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} MetaOutputInfo;
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#define META_TYPE_OUTPUT_INFO (meta_output_info_get_type ())
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META_EXPORT_TEST
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GType meta_output_info_get_type (void);
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META_EXPORT_TEST
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MetaOutputInfo * meta_output_info_new (void);
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META_EXPORT_TEST
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MetaOutputInfo * meta_output_info_ref (MetaOutputInfo *output_info);
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META_EXPORT_TEST
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void meta_output_info_unref (MetaOutputInfo *output_info);
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META_EXPORT_TEST
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void meta_output_info_parse_edid (MetaOutputInfo *output_info,
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GBytes *edid);
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gboolean meta_output_is_laptop (MetaOutput *output);
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G_DEFINE_AUTOPTR_CLEANUP_FUNC (MetaOutputInfo, meta_output_info_unref)
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#define META_TYPE_OUTPUT (meta_output_get_type ())
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META_EXPORT_TEST
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G_DECLARE_DERIVABLE_TYPE (MetaOutput, meta_output, META, OUTPUT, GObject)
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struct _MetaOutputClass
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{
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GObjectClass parent_class;
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};
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META_EXPORT_TEST
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uint64_t meta_output_get_id (MetaOutput *output);
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META_EXPORT_TEST
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MetaGpu * meta_output_get_gpu (MetaOutput *output);
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META_EXPORT_TEST
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MetaMonitor * meta_output_get_monitor (MetaOutput *output);
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void meta_output_set_monitor (MetaOutput *output,
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MetaMonitor *monitor);
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void meta_output_unset_monitor (MetaOutput *output);
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const char * meta_output_get_name (MetaOutput *output);
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META_EXPORT_TEST
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gboolean meta_output_is_primary (MetaOutput *output);
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META_EXPORT_TEST
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gboolean meta_output_is_presentation (MetaOutput *output);
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META_EXPORT_TEST
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gboolean meta_output_is_underscanning (MetaOutput *output);
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void meta_output_set_backlight (MetaOutput *output,
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int backlight);
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int meta_output_get_backlight (MetaOutput *output);
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void meta_output_add_possible_clone (MetaOutput *output,
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MetaOutput *possible_clone);
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META_EXPORT_TEST
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const MetaOutputInfo * meta_output_get_info (MetaOutput *output);
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META_EXPORT_TEST
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void meta_output_assign_crtc (MetaOutput *output,
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MetaCrtc *crtc,
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const MetaOutputAssignment *output_assignment);
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META_EXPORT_TEST
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void meta_output_unassign_crtc (MetaOutput *output);
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META_EXPORT_TEST
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MetaCrtc * meta_output_get_assigned_crtc (MetaOutput *output);
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MetaMonitorTransform meta_output_logical_to_crtc_transform (MetaOutput *output,
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MetaMonitorTransform transform);
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MetaMonitorTransform meta_output_crtc_to_logical_transform (MetaOutput *output,
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MetaMonitorTransform transform);
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#endif /* META_OUTPUT_H */
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