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b69111d8e6
mutter/src/backends/meta-monitor-manager-dummy.c
Jonas Ådahl b69111d8e6 monitor-manager: Rename *Info structs to *Assignment 
MetaCrtcInfo and MetaOutputInfo did not represent information about
MetaCrtc and MetaOutput, but the result of the monitor configuration
assignment algorithm, thus rename it to MetaCrtcAssignment and
MetaOutputAssignment.

The purpose for this is to be able to introduce a struct that actually
carries information about the CRTCs and outputs, as retrieved from the
backend implementations.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1287
2020-06-10 18:54:50 +00:00

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2001, 2002 Havoc Pennington
* Copyright (C) 2002, 2003 Red Hat Inc.
* Some ICCCM manager selection code derived from fvwm2,
* Copyright (C) 2001 Dominik Vogt, Matthias Clasen, and fvwm2 team
* Copyright (C) 2003 Rob Adams
* Copyright (C) 2004-2006 Elijah Newren
* Copyright (C) 2013 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "backends/meta-monitor-manager-dummy.h"
#include <stdlib.h>
#include "backends/meta-backend-private.h"
#include "backends/meta-crtc.h"
#include "backends/meta-monitor.h"
#include "backends/meta-monitor-config-manager.h"
#include "backends/meta-output.h"
#include "meta/util.h"
#define ALL_TRANSFORMS ((1 << (META_MONITOR_TRANSFORM_FLIPPED_270 + 1)) - 1)
#define MAX_MONITORS 5
#define MAX_OUTPUTS (MAX_MONITORS * 2)
#define MAX_CRTCS (MAX_MONITORS * 2)
#define MAX_MODES (MAX_MONITORS * 4)
struct _MetaMonitorManagerDummy
{
MetaMonitorManager parent_instance;
gboolean is_transform_handled;
};
struct _MetaMonitorManagerDummyClass
{
MetaMonitorManagerClass parent_class;
};
typedef struct _MetaOutputDummy
{
float scale;
} MetaOutputDummy;
G_DEFINE_TYPE (MetaMonitorManagerDummy, meta_monitor_manager_dummy, META_TYPE_MONITOR_MANAGER);
struct _MetaGpuDummy
{
MetaGpu parent;
};
G_DEFINE_TYPE (MetaGpuDummy, meta_gpu_dummy, META_TYPE_GPU)
static void
meta_output_dummy_notify_destroy (MetaOutput *output);
typedef struct _CrtcModeSpec
{
int width;
int height;
float refresh_rate;
} CrtcModeSpec;
G_DEFINE_AUTOPTR_CLEANUP_FUNC(CrtcModeSpec, g_free);
static MetaCrtcMode *
create_mode (CrtcModeSpec *spec,
long mode_id)
{
MetaCrtcMode *mode;
mode = g_object_new (META_TYPE_CRTC_MODE, NULL);
mode->mode_id = mode_id;
mode->width = spec->width;
mode->height = spec->height;
mode->refresh_rate = spec->refresh_rate;
return mode;
}
static MetaGpu *
get_gpu (MetaMonitorManager *manager)
{
MetaBackend *backend = meta_monitor_manager_get_backend (manager);
return META_GPU (meta_backend_get_gpus (backend)->data);
}
static void
append_monitor (MetaMonitorManager *manager,
GList **modes,
GList **crtcs,
GList **outputs,
float scale)
{
MetaGpu *gpu = get_gpu (manager);
CrtcModeSpec default_specs[] = {
{
.width = 800,
.height = 600,
.refresh_rate = 60.0
},
{
.width = 1024,
.height = 768,
.refresh_rate = 60.0
},
{
.width = 1440,
.height = 900,
.refresh_rate = 60.0
},
{
.width = 1600,
.height = 920,
.refresh_rate = 60.0
},
};
g_autolist (CrtcModeSpec) mode_specs = NULL;
unsigned int n_mode_specs = 0;
GList *new_modes = NULL;
MetaCrtc *crtc;
MetaOutputDummy *output_dummy;
MetaOutput *output;
unsigned int i;
unsigned int number;
const char *mode_specs_str;
GList *l;
mode_specs_str = getenv ("MUTTER_DEBUG_DUMMY_MODE_SPECS");
if (mode_specs_str && *mode_specs_str != '\0')
{
g_auto (GStrv) specs = g_strsplit (mode_specs_str, ":", -1);
for (i = 0; specs[i]; ++i)
{
int width, height;
float refresh_rate = 60.0;
if (sscanf (specs[i], "%dx%d@%f",
&width, &height, &refresh_rate) == 3 ||
sscanf (specs[i], "%dx%d",
&width, &height) == 2)
{
CrtcModeSpec *spec;
if (width < META_MONITOR_MANAGER_MIN_SCREEN_WIDTH ||
height < META_MONITOR_MANAGER_MIN_SCREEN_HEIGHT)
continue;
spec = g_new0 (CrtcModeSpec, 1);
spec->width = width;
spec->height = height;
spec->refresh_rate = refresh_rate;
mode_specs = g_list_prepend (mode_specs, spec);
}
}
}
else
{
for (i = 0; i < G_N_ELEMENTS (default_specs); i++)
{
CrtcModeSpec *spec;
spec = g_memdup (&default_specs[i], sizeof (CrtcModeSpec));
mode_specs = g_list_prepend (mode_specs, spec);
}
}
for (l = mode_specs; l; l = l->next)
{
CrtcModeSpec *spec = l->data;
long mode_id;
MetaCrtcMode *mode;
mode_id = g_list_length (*modes) + n_mode_specs + 1;
mode = create_mode (spec, mode_id);
new_modes = g_list_append (new_modes, mode);
n_mode_specs++;
}
*modes = g_list_concat (*modes, new_modes);
crtc = g_object_new (META_TYPE_CRTC,
"id", g_list_length (*crtcs) + 1,
"gpu", gpu,
NULL);
crtc->all_transforms = ALL_TRANSFORMS;
*crtcs = g_list_append (*crtcs, crtc);
number = g_list_length (*outputs) + 1;
output = g_object_new (META_TYPE_OUTPUT,
"id", number,
"gpu", gpu,
NULL);
output_dummy = g_new0 (MetaOutputDummy, 1);
*output_dummy = (MetaOutputDummy) {
.scale = scale
};
output->name = g_strdup_printf ("LVDS%d", number);
output->vendor = g_strdup ("MetaProducts Inc.");
output->product = g_strdup ("MetaMonitor");
output->serial = g_strdup_printf ("0xC0FFEE-%d", number);
output->suggested_x = -1;
output->suggested_y = -1;
output->width_mm = 222;
output->height_mm = 125;
output->subpixel_order = COGL_SUBPIXEL_ORDER_UNKNOWN;
output->preferred_mode = g_list_last (*modes)->data;
output->n_possible_clones = 0;
output->connector_type = META_CONNECTOR_TYPE_LVDS;
output->driver_private = output_dummy;
output->driver_notify =
(GDestroyNotify) meta_output_dummy_notify_destroy;
output->modes = g_new0 (MetaCrtcMode *, n_mode_specs);
for (l = new_modes, i = 0; l; l = l->next, i++)
{
MetaCrtcMode *mode = l->data;
output->modes[i] = mode;
}
output->n_modes = n_mode_specs;
output->possible_crtcs = g_new0 (MetaCrtc *, 1);
output->possible_crtcs[0] = g_list_last (*crtcs)->data;
output->n_possible_crtcs = 1;
*outputs = g_list_append (*outputs, output);
}
static void
append_tiled_monitor (MetaMonitorManager *manager,
GList **modes,
GList **crtcs,
GList **outputs,
int scale)
{
MetaGpu *gpu = get_gpu (manager);
CrtcModeSpec mode_specs[] = {
{
.width = 800,
.height = 600,
.refresh_rate = 60.0
},
{
.width = 512,
.height = 768,
.refresh_rate = 60.0
}
};
unsigned int n_tiles = 2;
GList *new_modes = NULL;
GList *new_crtcs = NULL;
MetaOutput *output;
unsigned int i;
uint32_t tile_group_id;
for (i = 0; i < G_N_ELEMENTS (mode_specs); i++)
{
long mode_id;
MetaCrtcMode *mode;
mode_id = g_list_length (*modes) + i + 1;
mode = create_mode (&mode_specs[i], mode_id);
new_modes = g_list_append (new_modes, mode);
}
*modes = g_list_concat (*modes, new_modes);
for (i = 0; i < n_tiles; i++)
{
MetaCrtc *crtc;
crtc = g_object_new (META_TYPE_CRTC,
"id", g_list_length (*crtcs) + i + 1,
"gpu", gpu,
NULL);
crtc->all_transforms = ALL_TRANSFORMS;
new_crtcs = g_list_append (new_crtcs, crtc);
}
*crtcs = g_list_concat (*crtcs, new_crtcs);
tile_group_id = g_list_length (*outputs) + 1;
for (i = 0; i < n_tiles; i++)
{
MetaOutputDummy *output_dummy;
MetaCrtcMode *preferred_mode;
unsigned int j;
unsigned int number;
GList *l;
output_dummy = g_new0 (MetaOutputDummy, 1);
*output_dummy = (MetaOutputDummy) {
.scale = scale
};
/* Arbitrary ID unique for this output */
number = g_list_length (*outputs) + 1;
preferred_mode = g_list_last (*modes)->data;
output = g_object_new (META_TYPE_OUTPUT,
"id", number,
"gpu", gpu,
NULL);
output->name = g_strdup_printf ("LVDS%d", number);
output->vendor = g_strdup ("MetaProducts Inc.");
output->product = g_strdup ("MetaMonitor");
output->serial = g_strdup_printf ("0xC0FFEE-%d", number);
output->suggested_x = -1;
output->suggested_y = -1;
output->width_mm = 222;
output->height_mm = 125;
output->subpixel_order = COGL_SUBPIXEL_ORDER_UNKNOWN;
output->preferred_mode = preferred_mode;
output->n_possible_clones = 0;
output->connector_type = META_CONNECTOR_TYPE_LVDS;
output->tile_info = (MetaTileInfo) {
.group_id = tile_group_id,
.max_h_tiles = n_tiles,
.max_v_tiles = 1,
.loc_h_tile = i,
.loc_v_tile = 0,
.tile_w = preferred_mode->width,
.tile_h = preferred_mode->height
},
output->driver_private = output_dummy;
output->driver_notify =
(GDestroyNotify) meta_output_dummy_notify_destroy;
output->modes = g_new0 (MetaCrtcMode *, G_N_ELEMENTS (mode_specs));
for (l = new_modes, j = 0; l; l = l->next, j++)
{
MetaCrtcMode *mode = l->data;
output->modes[j] = mode;
}
output->n_modes = G_N_ELEMENTS (mode_specs);
output->possible_crtcs = g_new0 (MetaCrtc *, n_tiles);
for (l = new_crtcs, j = 0; l; l = l->next, j++)
{
MetaCrtc *crtc = l->data;
output->possible_crtcs[j] = crtc;
}
output->n_possible_crtcs = n_tiles;
*outputs = g_list_append (*outputs, output);
}
}
static void
meta_output_dummy_notify_destroy (MetaOutput *output)
{
g_clear_pointer (&output->driver_private, g_free);
}
static void
meta_monitor_manager_dummy_read_current (MetaMonitorManager *manager)
{
MetaGpu *gpu = get_gpu (manager);
unsigned int num_monitors = 1;
float *monitor_scales = NULL;
const char *num_monitors_str;
const char *monitor_scales_str;
const char *tiled_monitors_str;
gboolean tiled_monitors;
unsigned int i;
GList *outputs;
GList *crtcs;
GList *modes;
/* To control what monitor configuration is generated, there are two available
* environmental variables that can be used:
*
* MUTTER_DEBUG_NUM_DUMMY_MONITORS
*
* Specifies the number of dummy monitors to include in the stage. Every
* monitor is 1024x786 pixels and they are placed on a horizontal row.
*
* MUTTER_DEBUG_DUMMY_MODE_SPECS
*
* A colon separated list of mode specifications that can be used to
* configure the monitor via dbus API. Setting this environment variable
* overrides the default set of modes available.
* Format should be WWxHH:WWxHH@RR
*
* MUTTER_DEBUG_DUMMY_MONITOR_SCALES
*
* A comma separated list that specifies the scales of the dummy monitors.
*
* MUTTER_DEBUG_TILED_DUMMY_MONITORS
*
* If set to "1" the dummy monitors will emulate being tiled, i.e. each have a
* unique tile group id, made up of multiple outputs and CRTCs.
*
* For example the following configuration results in two monitors, where the
* first one has the monitor scale 1, and the other the monitor scale 2.
*
* MUTTER_DEBUG_NUM_DUMMY_MONITORS=2
* MUTTER_DEBUG_DUMMY_MONITOR_SCALES=1,2
* MUTTER_DEBUG_TILED_DUMMY_MONITORS=1
*/
num_monitors_str = getenv ("MUTTER_DEBUG_NUM_DUMMY_MONITORS");
if (num_monitors_str)
{
num_monitors = g_ascii_strtoll (num_monitors_str, NULL, 10);
if (num_monitors <= 0)
{
meta_warning ("Invalid number of dummy monitors");
num_monitors = 1;
}
if (num_monitors > MAX_MONITORS)
{
meta_warning ("Clamping monitor count to max (%d)",
MAX_MONITORS);
num_monitors = MAX_MONITORS;
}
}
monitor_scales = g_newa (typeof (*monitor_scales), num_monitors);
for (i = 0; i < num_monitors; i++)
monitor_scales[i] = 1.0;
monitor_scales_str = getenv ("MUTTER_DEBUG_DUMMY_MONITOR_SCALES");
if (monitor_scales_str)
{
gchar **scales_str_list;
scales_str_list = g_strsplit (monitor_scales_str, ",", -1);
if (g_strv_length (scales_str_list) != num_monitors)
meta_warning ("Number of specified monitor scales differ from number "
"of monitors (defaults to 1).\n");
for (i = 0; i < num_monitors && scales_str_list[i]; i++)
{
float scale = g_ascii_strtod (scales_str_list[i], NULL);
monitor_scales[i] = scale;
}
g_strfreev (scales_str_list);
}
tiled_monitors_str = g_getenv ("MUTTER_DEBUG_TILED_DUMMY_MONITORS");
tiled_monitors = g_strcmp0 (tiled_monitors_str, "1") == 0;
modes = NULL;
crtcs = NULL;
outputs = NULL;
for (i = 0; i < num_monitors; i++)
{
if (tiled_monitors)
append_tiled_monitor (manager,
&modes, &crtcs, &outputs, monitor_scales[i]);
else
append_monitor (manager, &modes, &crtcs, &outputs, monitor_scales[i]);
}
meta_gpu_take_modes (gpu, modes);
meta_gpu_take_crtcs (gpu, crtcs);
meta_gpu_take_outputs (gpu, outputs);
}
static void
meta_monitor_manager_dummy_ensure_initial_config (MetaMonitorManager *manager)
{
MetaMonitorsConfig *config;
config = meta_monitor_manager_ensure_configured (manager);
if (meta_is_stage_views_enabled ())
meta_monitor_manager_update_logical_state (manager, config);
else
meta_monitor_manager_update_logical_state_derived (manager, NULL);
}
static void
apply_crtc_assignments (MetaMonitorManager *manager,
MetaCrtcAssignment **crtcs,
unsigned int n_crtcs,
MetaOutputAssignment **outputs,
unsigned int n_outputs)
{
g_autoptr (GList) to_configure_outputs = NULL;
g_autoptr (GList) to_configure_crtcs = NULL;
unsigned i;
to_configure_outputs = g_list_copy (meta_gpu_get_outputs (get_gpu (manager)));
to_configure_crtcs = g_list_copy (meta_gpu_get_crtcs (get_gpu (manager)));
for (i = 0; i < n_crtcs; i++)
{
MetaCrtcAssignment *crtc_assignment = crtcs[i];
MetaCrtc *crtc = crtc_assignment->crtc;
to_configure_crtcs = g_list_remove (to_configure_crtcs, crtc);
if (crtc_assignment->mode == NULL)
{
meta_crtc_unset_config (crtc);
}
else
{
unsigned int j;
meta_crtc_set_config (crtc,
&crtc_assignment->layout,
crtc_assignment->mode,
crtc_assignment->transform);
for (j = 0; j < crtc_assignment->outputs->len; j++)
{
MetaOutput *output;
MetaOutputAssignment *output_assignment;
output = ((MetaOutput**) crtc_assignment->outputs->pdata)[j];
to_configure_outputs = g_list_remove (to_configure_outputs,
output);
output_assignment = meta_find_output_assignment (outputs,
n_outputs,
output);
meta_output_assign_crtc (output, crtc, output_assignment);
}
}
}
g_list_foreach (to_configure_crtcs,
(GFunc) meta_crtc_unset_config,
NULL);
g_list_foreach (to_configure_outputs,
(GFunc) meta_output_unassign_crtc,
NULL);
}
static void
update_screen_size (MetaMonitorManager *manager,
MetaMonitorsConfig *config)
{
GList *l;
int screen_width = 0;
int screen_height = 0;
for (l = config->logical_monitor_configs; l; l = l->next)
{
MetaLogicalMonitorConfig *logical_monitor_config = l->data;
int right_edge;
int bottom_edge;
right_edge = (logical_monitor_config->layout.width +
logical_monitor_config->layout.x);
if (right_edge > screen_width)
screen_width = right_edge;
bottom_edge = (logical_monitor_config->layout.height +
logical_monitor_config->layout.y);
if (bottom_edge > screen_height)
screen_height = bottom_edge;
}
manager->screen_width = screen_width;
manager->screen_height = screen_height;
}
static gboolean
meta_monitor_manager_dummy_apply_monitors_config (MetaMonitorManager *manager,
MetaMonitorsConfig *config,
MetaMonitorsConfigMethod method,
GError **error)
{
GPtrArray *crtc_assignments;
GPtrArray *output_assignments;
if (!config)
{
manager->screen_width = META_MONITOR_MANAGER_MIN_SCREEN_WIDTH;
manager->screen_height = META_MONITOR_MANAGER_MIN_SCREEN_HEIGHT;
meta_monitor_manager_rebuild (manager, NULL);
return TRUE;
}
if (!meta_monitor_config_manager_assign (manager, config,
&crtc_assignments,
&output_assignments,
error))
return FALSE;
if (method == META_MONITORS_CONFIG_METHOD_VERIFY)
{
g_ptr_array_free (crtc_assignments, TRUE);
g_ptr_array_free (output_assignments, TRUE);
return TRUE;
}
apply_crtc_assignments (manager,
(MetaCrtcAssignment **) crtc_assignments->pdata,
crtc_assignments->len,
(MetaOutputAssignment **) output_assignments->pdata,
output_assignments->len);
g_ptr_array_free (crtc_assignments, TRUE);
g_ptr_array_free (output_assignments, TRUE);
update_screen_size (manager, config);
meta_monitor_manager_rebuild (manager, config);
return TRUE;
}
static gboolean
meta_monitor_manager_dummy_is_transform_handled (MetaMonitorManager *manager,
MetaCrtc *crtc,
MetaMonitorTransform transform)
{
MetaMonitorManagerDummy *manager_dummy = META_MONITOR_MANAGER_DUMMY (manager);
return manager_dummy->is_transform_handled;
}
static float
meta_monitor_manager_dummy_calculate_monitor_mode_scale (MetaMonitorManager *manager,
MetaMonitor *monitor,
MetaMonitorMode *monitor_mode)
{
MetaOutput *output;
MetaOutputDummy *output_dummy;
output = meta_monitor_get_main_output (monitor);
output_dummy = output->driver_private;
return output_dummy->scale;
}
static float *
meta_monitor_manager_dummy_calculate_supported_scales (MetaMonitorManager *manager,
MetaLogicalMonitorLayoutMode layout_mode,
MetaMonitor *monitor,
MetaMonitorMode *monitor_mode,
int *n_supported_scales)
{
MetaMonitorScalesConstraint constraints =
META_MONITOR_SCALES_CONSTRAINT_NONE;
switch (layout_mode)
{
case META_LOGICAL_MONITOR_LAYOUT_MODE_LOGICAL:
break;
case META_LOGICAL_MONITOR_LAYOUT_MODE_PHYSICAL:
constraints |= META_MONITOR_SCALES_CONSTRAINT_NO_FRAC;
break;
}
return meta_monitor_calculate_supported_scales (monitor, monitor_mode,
constraints,
n_supported_scales);
}
static gboolean
is_monitor_framebuffers_scaled (void)
{
MetaBackend *backend = meta_get_backend ();
MetaSettings *settings = meta_backend_get_settings (backend);
return meta_settings_is_experimental_feature_enabled (
settings,
META_EXPERIMENTAL_FEATURE_SCALE_MONITOR_FRAMEBUFFER);
}
static MetaMonitorManagerCapability
meta_monitor_manager_dummy_get_capabilities (MetaMonitorManager *manager)
{
MetaBackend *backend = meta_get_backend ();
MetaSettings *settings = meta_backend_get_settings (backend);
MetaMonitorManagerCapability capabilities =
META_MONITOR_MANAGER_CAPABILITY_NONE;
if (meta_settings_is_experimental_feature_enabled (
settings,
META_EXPERIMENTAL_FEATURE_SCALE_MONITOR_FRAMEBUFFER))
capabilities |= META_MONITOR_MANAGER_CAPABILITY_LAYOUT_MODE;
return capabilities;
}
static gboolean
meta_monitor_manager_dummy_get_max_screen_size (MetaMonitorManager *manager,
int *max_width,
int *max_height)
{
if (meta_is_stage_views_enabled ())
return FALSE;
*max_width = 65535;
*max_height = 65535;
return TRUE;
}
static MetaLogicalMonitorLayoutMode
meta_monitor_manager_dummy_get_default_layout_mode (MetaMonitorManager *manager)
{
if (!meta_is_stage_views_enabled ())
return META_LOGICAL_MONITOR_LAYOUT_MODE_PHYSICAL;
if (is_monitor_framebuffers_scaled ())
return META_LOGICAL_MONITOR_LAYOUT_MODE_LOGICAL;
else
return META_LOGICAL_MONITOR_LAYOUT_MODE_PHYSICAL;
}
static void
meta_monitor_manager_dummy_constructed (GObject *object)
{
MetaMonitorManagerDummy *manager_dummy = META_MONITOR_MANAGER_DUMMY (object);
const char *nested_offscreen_transform;
GObjectClass *parent_object_class =
G_OBJECT_CLASS (meta_monitor_manager_dummy_parent_class);
parent_object_class->constructed (object);
nested_offscreen_transform =
g_getenv ("MUTTER_DEBUG_NESTED_OFFSCREEN_TRANSFORM");
if (g_strcmp0 (nested_offscreen_transform, "1") == 0)
manager_dummy->is_transform_handled = FALSE;
else
manager_dummy->is_transform_handled = TRUE;
}
static void
meta_monitor_manager_dummy_class_init (MetaMonitorManagerDummyClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
MetaMonitorManagerClass *manager_class = META_MONITOR_MANAGER_CLASS (klass);
object_class->constructed = meta_monitor_manager_dummy_constructed;
manager_class->ensure_initial_config = meta_monitor_manager_dummy_ensure_initial_config;
manager_class->apply_monitors_config = meta_monitor_manager_dummy_apply_monitors_config;
manager_class->is_transform_handled = meta_monitor_manager_dummy_is_transform_handled;
manager_class->calculate_monitor_mode_scale = meta_monitor_manager_dummy_calculate_monitor_mode_scale;
manager_class->calculate_supported_scales = meta_monitor_manager_dummy_calculate_supported_scales;
manager_class->get_capabilities = meta_monitor_manager_dummy_get_capabilities;
manager_class->get_max_screen_size = meta_monitor_manager_dummy_get_max_screen_size;
manager_class->get_default_layout_mode = meta_monitor_manager_dummy_get_default_layout_mode;
}
static void
meta_monitor_manager_dummy_init (MetaMonitorManagerDummy *manager_dummy)
{
}
static gboolean
meta_gpu_dummy_read_current (MetaGpu *gpu,
GError **error)
{
MetaBackend *backend = meta_gpu_get_backend (gpu);
MetaMonitorManager *manager = meta_backend_get_monitor_manager (backend);
meta_monitor_manager_dummy_read_current (manager);
return TRUE;
}
static void
meta_gpu_dummy_init (MetaGpuDummy *gpu_dummy)
{
}
static void
meta_gpu_dummy_class_init (MetaGpuDummyClass *klass)
{
MetaGpuClass *gpu_class = META_GPU_CLASS (klass);
gpu_class->read_current = meta_gpu_dummy_read_current;
}
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