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6bd49c3dc8
mutter/cogl/winsys/cogl-winsys-egl-kms.c
Ray Strode 6bd49c3dc8 kms-winsys: don't disable page flipping on EACCES 
If the user switches VTs in the middle of a page flip, the
page flip operation may fail with EACCES. page flipping will
work next time the VT becomes active, so we shouldn't disable
page flipping in that case.

https://bugzilla.gnome.org/show_bug.cgi?id=754540
2015-09-03 17:29:28 -04:00

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/*
* Cogl
*
* A Low Level GPU Graphics and Utilities API
*
* Copyright (C) 2011 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*
* Authors:
* Rob Bradford <rob@linux.intel.com>
* Kristian Høgsberg (from eglkms.c)
* Benjamin Franzke (from eglkms.c)
* Robert Bragg <robert@linux.intel.com>
* Neil Roberts <neil@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <errno.h>
#include <stddef.h>
#include <drm.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <gbm.h>
#include <glib.h>
#include <sys/fcntl.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include "cogl-winsys-egl-kms-private.h"
#include "cogl-winsys-egl-private.h"
#include "cogl-renderer-private.h"
#include "cogl-framebuffer-private.h"
#include "cogl-onscreen-private.h"
#include "cogl-kms-renderer.h"
#include "cogl-kms-display.h"
#include "cogl-version.h"
#include "cogl-error-private.h"
#include "cogl-poll-private.h"
static const CoglWinsysEGLVtable _cogl_winsys_egl_vtable;
static const CoglWinsysVtable *parent_vtable;
typedef struct _CoglRendererKMS
{
int fd;
int opened_fd;
struct gbm_device *gbm;
CoglClosure *swap_notify_idle;
CoglBool page_flips_not_supported;
} CoglRendererKMS;
typedef struct _CoglOutputKMS
{
drmModeConnector *connector;
drmModeEncoder *encoder;
drmModeCrtc *saved_crtc;
drmModeModeInfo *modes;
int n_modes;
drmModeModeInfo mode;
} CoglOutputKMS;
typedef struct _CoglDisplayKMS
{
GList *outputs;
GList *crtcs;
int width, height;
CoglBool pending_set_crtc;
struct gbm_surface *dummy_gbm_surface;
CoglOnscreen *onscreen;
} CoglDisplayKMS;
typedef struct _CoglFlipKMS
{
CoglOnscreen *onscreen;
int pending;
} CoglFlipKMS;
typedef struct _CoglOnscreenKMS
{
struct gbm_surface *surface;
uint32_t current_fb_id;
uint32_t next_fb_id;
struct gbm_bo *current_bo;
struct gbm_bo *next_bo;
CoglBool pending_swap_notify;
EGLSurface *pending_egl_surface;
struct gbm_surface *pending_surface;
} CoglOnscreenKMS;
static const char device_name[] = "/dev/dri/card0";
static void
_cogl_winsys_renderer_disconnect (CoglRenderer *renderer)
{
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererKMS *kms_renderer = egl_renderer->platform;
if (egl_renderer->edpy != EGL_NO_DISPLAY)
eglTerminate (egl_renderer->edpy);
if (kms_renderer->gbm != NULL)
gbm_device_destroy (kms_renderer->gbm);
if (kms_renderer->opened_fd >= 0)
close (kms_renderer->opened_fd);
g_slice_free (CoglRendererKMS, kms_renderer);
g_slice_free (CoglRendererEGL, egl_renderer);
}
static void
flush_pending_swap_notify_cb (void *data,
void *user_data)
{
CoglFramebuffer *framebuffer = data;
if (framebuffer->type == COGL_FRAMEBUFFER_TYPE_ONSCREEN)
{
CoglOnscreen *onscreen = COGL_ONSCREEN (framebuffer);
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
CoglOnscreenKMS *kms_onscreen = egl_onscreen->platform;
if (kms_onscreen->pending_swap_notify)
{
CoglFrameInfo *info = g_queue_pop_head (&onscreen->pending_frame_infos);
_cogl_onscreen_notify_frame_sync (onscreen, info);
_cogl_onscreen_notify_complete (onscreen, info);
kms_onscreen->pending_swap_notify = FALSE;
cogl_object_unref (info);
}
}
}
static void
flush_pending_swap_notify_idle (void *user_data)
{
CoglContext *context = user_data;
CoglRendererEGL *egl_renderer = context->display->renderer->winsys;
CoglRendererKMS *kms_renderer = egl_renderer->platform;
/* This needs to be disconnected before invoking the callbacks in
* case the callbacks cause it to be queued again */
_cogl_closure_disconnect (kms_renderer->swap_notify_idle);
kms_renderer->swap_notify_idle = NULL;
g_list_foreach (context->framebuffers,
flush_pending_swap_notify_cb,
NULL);
}
static void
free_current_bo (CoglOnscreen *onscreen)
{
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
CoglOnscreenKMS *kms_onscreen = egl_onscreen->platform;
CoglContext *context = COGL_FRAMEBUFFER (onscreen)->context;
CoglRenderer *renderer = context->display->renderer;
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererKMS *kms_renderer = egl_renderer->platform;
if (kms_onscreen->current_fb_id)
{
drmModeRmFB (kms_renderer->fd,
kms_onscreen->current_fb_id);
kms_onscreen->current_fb_id = 0;
}
if (kms_onscreen->current_bo)
{
gbm_surface_release_buffer (kms_onscreen->surface,
kms_onscreen->current_bo);
kms_onscreen->current_bo = NULL;
}
}
static void
queue_swap_notify_for_onscreen (CoglOnscreen *onscreen)
{
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
CoglOnscreenKMS *kms_onscreen = egl_onscreen->platform;
CoglContext *context = COGL_FRAMEBUFFER (onscreen)->context;
CoglRenderer *renderer = context->display->renderer;
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererKMS *kms_renderer = egl_renderer->platform;
/* We only want to notify that the swap is complete when the
* application calls cogl_context_dispatch so instead of
* immediately notifying we queue an idle callback */
if (!kms_renderer->swap_notify_idle)
{
kms_renderer->swap_notify_idle =
_cogl_poll_renderer_add_idle (renderer,
flush_pending_swap_notify_idle,
context,
NULL);
}
kms_onscreen->pending_swap_notify = TRUE;
}
static void
process_flip (CoglFlipKMS *flip)
{
/* We're only ready to dispatch a swap notification once all outputs
* have flipped... */
flip->pending--;
if (flip->pending == 0)
{
CoglOnscreen *onscreen = flip->onscreen;
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
CoglOnscreenKMS *kms_onscreen = egl_onscreen->platform;
queue_swap_notify_for_onscreen (onscreen);
free_current_bo (onscreen);
kms_onscreen->current_fb_id = kms_onscreen->next_fb_id;
kms_onscreen->next_fb_id = 0;
kms_onscreen->current_bo = kms_onscreen->next_bo;
kms_onscreen->next_bo = NULL;
cogl_object_unref (flip->onscreen);
g_slice_free (CoglFlipKMS, flip);
}
}
static void
page_flip_handler (int fd,
unsigned int frame,
unsigned int sec,
unsigned int usec,
void *data)
{
CoglFlipKMS *flip = data;
process_flip (flip);
}
static void
handle_drm_event (CoglRendererKMS *kms_renderer)
{
drmEventContext evctx;
if (kms_renderer->page_flips_not_supported)
return;
memset (&evctx, 0, sizeof evctx);
evctx.version = DRM_EVENT_CONTEXT_VERSION;
evctx.page_flip_handler = page_flip_handler;
drmHandleEvent (kms_renderer->fd, &evctx);
}
static void
dispatch_kms_events (void *user_data, int revents)
{
CoglRenderer *renderer = user_data;
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererKMS *kms_renderer = egl_renderer->platform;
if (!revents)
return;
handle_drm_event (kms_renderer);
}
static CoglBool
_cogl_winsys_renderer_connect (CoglRenderer *renderer,
CoglError **error)
{
CoglRendererEGL *egl_renderer;
CoglRendererKMS *kms_renderer;
renderer->winsys = g_slice_new0 (CoglRendererEGL);
egl_renderer = renderer->winsys;
egl_renderer->platform_vtable = &_cogl_winsys_egl_vtable;
egl_renderer->platform = g_slice_new0 (CoglRendererKMS);
kms_renderer = egl_renderer->platform;
kms_renderer->fd = -1;
kms_renderer->opened_fd = -1;
egl_renderer->edpy = EGL_NO_DISPLAY;
if (renderer->kms_fd >= 0)
{
kms_renderer->fd = renderer->kms_fd;
}
else
{
kms_renderer->opened_fd = open (device_name, O_RDWR);
kms_renderer->fd = kms_renderer->opened_fd;
if (kms_renderer->fd < 0)
{
/* Probably permissions error */
_cogl_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_INIT,
"Couldn't open %s", device_name);
return FALSE;
}
}
kms_renderer->gbm = gbm_create_device (kms_renderer->fd);
if (kms_renderer->gbm == NULL)
{
_cogl_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_INIT,
"Couldn't create gbm device");
goto fail;
}
egl_renderer->edpy = eglGetDisplay ((EGLNativeDisplayType)kms_renderer->gbm);
if (egl_renderer->edpy == EGL_NO_DISPLAY)
{
_cogl_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_INIT,
"Couldn't get eglDisplay");
goto fail;
}
if (!_cogl_winsys_egl_renderer_connect_common (renderer, error))
goto fail;
_cogl_poll_renderer_add_fd (renderer,
kms_renderer->fd,
COGL_POLL_FD_EVENT_IN,
NULL, /* no prepare callback */
dispatch_kms_events,
renderer);
return TRUE;
fail:
_cogl_winsys_renderer_disconnect (renderer);
return FALSE;
}
static CoglBool
is_connector_excluded (int id,
int *excluded_connectors,
int n_excluded_connectors)
{
int i;
for (i = 0; i < n_excluded_connectors; i++)
if (excluded_connectors[i] == id)
return TRUE;
return FALSE;
}
static drmModeConnector *
find_connector (int fd,
drmModeRes *resources,
int *excluded_connectors,
int n_excluded_connectors)
{
int i;
for (i = 0; i < resources->count_connectors; i++)
{
drmModeConnector *connector =
drmModeGetConnector (fd, resources->connectors[i]);
if (connector &&
connector->connection == DRM_MODE_CONNECTED &&
connector->count_modes > 0 &&
!is_connector_excluded (connector->connector_id,
excluded_connectors,
n_excluded_connectors))
return connector;
drmModeFreeConnector(connector);
}
return NULL;
}
static CoglBool
find_mirror_modes (drmModeModeInfo *modes0,
int n_modes0,
drmModeModeInfo *modes1,
int n_modes1,
drmModeModeInfo *mode1_out,
drmModeModeInfo *mode0_out)
{
int i;
for (i = 0; i < n_modes0; i++)
{
int j;
drmModeModeInfo *mode0 = &modes0[i];
for (j = 0; j < n_modes1; j++)
{
drmModeModeInfo *mode1 = &modes1[j];
if (mode1->hdisplay == mode0->hdisplay &&
mode1->vdisplay == mode0->vdisplay)
{
*mode0_out = *mode0;
*mode1_out = *mode1;
return TRUE;
}
}
}
return FALSE;
}
static drmModeModeInfo builtin_1024x768 =
{
63500, /* clock */
1024, 1072, 1176, 1328, 0,
768, 771, 775, 798, 0,
59920,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC,
0,
"1024x768"
};
static CoglBool
is_panel (int type)
{
return (type == DRM_MODE_CONNECTOR_LVDS ||
type == DRM_MODE_CONNECTOR_eDP);
}
static CoglOutputKMS *
find_output (int _index,
int fd,
drmModeRes *resources,
int *excluded_connectors,
int n_excluded_connectors,
CoglError **error)
{
char *connector_env_name = g_strdup_printf ("COGL_KMS_CONNECTOR%d", _index);
char *mode_env_name;
drmModeConnector *connector;
drmModeEncoder *encoder;
CoglOutputKMS *output;
drmModeModeInfo *modes;
int n_modes;
if (getenv (connector_env_name))
{
unsigned long id = strtoul (getenv (connector_env_name), NULL, 10);
connector = drmModeGetConnector (fd, id);
}
else
connector = NULL;
g_free (connector_env_name);
if (connector == NULL)
connector = find_connector (fd, resources,
excluded_connectors, n_excluded_connectors);
if (connector == NULL)
{
_cogl_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_INIT,
"No currently active connector found");
return NULL;
}
/* XXX: At this point it seems connector->encoder_id may be an invalid id of 0
* even though the connector is marked as connected. Referencing ->encoders[0]
* seems more reliable. */
encoder = drmModeGetEncoder (fd, connector->encoders[0]);
output = g_slice_new0 (CoglOutputKMS);
output->connector = connector;
output->encoder = encoder;
output->saved_crtc = drmModeGetCrtc (fd, encoder->crtc_id);
if (is_panel (connector->connector_type))
{
n_modes = connector->count_modes + 1;
modes = g_new (drmModeModeInfo, n_modes);
memcpy (modes, connector->modes,
sizeof (drmModeModeInfo) * connector->count_modes);
/* TODO: parse EDID */
modes[n_modes - 1] = builtin_1024x768;
}
else
{
n_modes = connector->count_modes;
modes = g_new (drmModeModeInfo, n_modes);
memcpy (modes, connector->modes,
sizeof (drmModeModeInfo) * n_modes);
}
mode_env_name = g_strdup_printf ("COGL_KMS_CONNECTOR%d_MODE", _index);
if (getenv (mode_env_name))
{
const char *name = getenv (mode_env_name);
int i;
CoglBool found = FALSE;
drmModeModeInfo mode;
for (i = 0; i < n_modes; i++)
{
if (strcmp (modes[i].name, name) == 0)
{
found = TRUE;
break;
}
}
if (!found)
{
g_free (mode_env_name);
_cogl_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_INIT,
"COGL_KMS_CONNECTOR%d_MODE of %s could not be found",
_index, name);
return NULL;
}
n_modes = 1;
mode = modes[i];
g_free (modes);
modes = g_new (drmModeModeInfo, 1);
modes[0] = mode;
}
g_free (mode_env_name);
output->modes = modes;
output->n_modes = n_modes;
return output;
}
static void
setup_crtc_modes (CoglDisplay *display, int fb_id)
{
CoglDisplayEGL *egl_display = display->winsys;
CoglDisplayKMS *kms_display = egl_display->platform;
CoglRendererEGL *egl_renderer = display->renderer->winsys;
CoglRendererKMS *kms_renderer = egl_renderer->platform;
GList *l;
for (l = kms_display->crtcs; l; l = l->next)
{
CoglKmsCrtc *crtc = l->data;
int ret = drmModeSetCrtc (kms_renderer->fd,
crtc->id,
fb_id, crtc->x, crtc->y,
crtc->connectors, crtc->count,
crtc->count ? &crtc->mode : NULL);
if (ret)
g_warning ("Failed to set crtc mode %s: %m", crtc->mode.name);
}
}
static void
flip_all_crtcs (CoglDisplay *display, CoglFlipKMS *flip, int fb_id)
{
CoglDisplayEGL *egl_display = display->winsys;
CoglDisplayKMS *kms_display = egl_display->platform;
CoglRendererEGL *egl_renderer = display->renderer->winsys;
CoglRendererKMS *kms_renderer = egl_renderer->platform;
GList *l;
gboolean needs_flip = FALSE;
for (l = kms_display->crtcs; l; l = l->next)
{
CoglKmsCrtc *crtc = l->data;
int ret;
if (crtc->count == 0 || crtc->ignore)
continue;
needs_flip = TRUE;
if (!kms_renderer->page_flips_not_supported)
{
ret = drmModePageFlip (kms_renderer->fd,
crtc->id, fb_id,
DRM_MODE_PAGE_FLIP_EVENT, flip);
if (ret != 0 && ret != -EACCES)
{
g_warning ("Failed to flip: %m");
kms_renderer->page_flips_not_supported = TRUE;
break;
}
}
flip->pending++;
}
if (kms_renderer->page_flips_not_supported && needs_flip)
flip->pending = 1;
}
static void
crtc_free (CoglKmsCrtc *crtc)
{
g_free (crtc->connectors);
g_slice_free (CoglKmsCrtc, crtc);
}
static CoglKmsCrtc *
crtc_copy (CoglKmsCrtc *from)
{
CoglKmsCrtc *new;
new = g_slice_new (CoglKmsCrtc);
*new = *from;
new->connectors = g_memdup (from->connectors, from->count * sizeof(uint32_t));
return new;
}
static CoglBool
_cogl_winsys_egl_display_setup (CoglDisplay *display,
CoglError **error)
{
CoglDisplayEGL *egl_display = display->winsys;
CoglDisplayKMS *kms_display;
CoglRendererEGL *egl_renderer = display->renderer->winsys;
CoglRendererKMS *kms_renderer = egl_renderer->platform;
drmModeRes *resources;
CoglOutputKMS *output0, *output1;
CoglBool mirror;
CoglKmsCrtc *crtc0, *crtc1;
kms_display = g_slice_new0 (CoglDisplayKMS);
egl_display->platform = kms_display;
resources = drmModeGetResources (kms_renderer->fd);
if (!resources)
{
_cogl_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_INIT,
"drmModeGetResources failed");
return FALSE;
}
output0 = find_output (0,
kms_renderer->fd,
resources,
NULL,
0, /* n excluded connectors */
error);
if (!output0)
return FALSE;
kms_display->outputs = g_list_append (kms_display->outputs, output0);
if (getenv ("COGL_KMS_MIRROR"))
mirror = TRUE;
else
mirror = FALSE;
if (mirror)
{
int exclude_connector = output0->connector->connector_id;
output1 = find_output (1,
kms_renderer->fd,
resources,
&exclude_connector,
1, /* n excluded connectors */
error);
if (!output1)
return FALSE;
kms_display->outputs = g_list_append (kms_display->outputs, output1);
if (!find_mirror_modes (output0->modes, output0->n_modes,
output1->modes, output1->n_modes,
&output0->mode,
&output1->mode))
{
_cogl_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_INIT,
"Failed to find matching modes for mirroring");
return FALSE;
}
}
else
{
output0->mode = output0->modes[0];
output1 = NULL;
}
crtc0 = g_slice_new (CoglKmsCrtc);
crtc0->id = output0->encoder->crtc_id;
crtc0->x = 0;
crtc0->y = 0;
crtc0->mode = output0->mode;
crtc0->connectors = g_new (uint32_t, 1);
crtc0->connectors[0] = output0->connector->connector_id;
crtc0->count = 1;
kms_display->crtcs = g_list_prepend (kms_display->crtcs, crtc0);
if (output1)
{
crtc1 = g_slice_new (CoglKmsCrtc);
crtc1->id = output1->encoder->crtc_id;
crtc1->x = 0;
crtc1->y = 0;
crtc1->mode = output1->mode;
crtc1->connectors = g_new (uint32_t, 1);
crtc1->connectors[0] = output1->connector->connector_id;
crtc1->count = 1;
kms_display->crtcs = g_list_prepend (kms_display->crtcs, crtc1);
}
kms_display->width = output0->mode.hdisplay;
kms_display->height = output0->mode.vdisplay;
/* We defer setting the crtc modes until the first swap_buffers request of a
* CoglOnscreen framebuffer. */
kms_display->pending_set_crtc = TRUE;
return TRUE;
}
static void
output_free (int fd, CoglOutputKMS *output)
{
if (output->modes)
g_free (output->modes);
if (output->encoder)
drmModeFreeEncoder (output->encoder);
if (output->connector)
{
if (output->saved_crtc)
{
int ret = drmModeSetCrtc (fd,
output->saved_crtc->crtc_id,
output->saved_crtc->buffer_id,
output->saved_crtc->x,
output->saved_crtc->y,
&output->connector->connector_id, 1,
&output->saved_crtc->mode);
if (ret)
g_warning (G_STRLOC ": Error restoring saved CRTC");
}
drmModeFreeConnector (output->connector);
}
g_slice_free (CoglOutputKMS, output);
}
static void
_cogl_winsys_egl_display_destroy (CoglDisplay *display)
{
CoglDisplayEGL *egl_display = display->winsys;
CoglDisplayKMS *kms_display = egl_display->platform;
CoglRenderer *renderer = display->renderer;
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererKMS *kms_renderer = egl_renderer->platform;
GList *l;
for (l = kms_display->outputs; l; l = l->next)
output_free (kms_renderer->fd, l->data);
g_list_free (kms_display->outputs);
kms_display->outputs = NULL;
g_list_free_full (kms_display->crtcs, (GDestroyNotify) crtc_free);
g_slice_free (CoglDisplayKMS, egl_display->platform);
}
static CoglBool
_cogl_winsys_egl_context_created (CoglDisplay *display,
CoglError **error)
{
CoglDisplayEGL *egl_display = display->winsys;
CoglDisplayKMS *kms_display = egl_display->platform;
CoglRenderer *renderer = display->renderer;
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererKMS *kms_renderer = egl_renderer->platform;
if ((egl_renderer->private_features &
COGL_EGL_WINSYS_FEATURE_SURFACELESS_CONTEXT) == 0)
{
kms_display->dummy_gbm_surface =
gbm_surface_create (kms_renderer->gbm,
16, 16,
GBM_FORMAT_XRGB8888,
GBM_BO_USE_RENDERING);
if (!kms_display->dummy_gbm_surface)
{
_cogl_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_CONTEXT,
"Failed to create dummy GBM surface");
return FALSE;
}
egl_display->dummy_surface =
eglCreateWindowSurface (egl_renderer->edpy,
egl_display->egl_config,
(EGLNativeWindowType)
kms_display->dummy_gbm_surface,
NULL);
if (egl_display->dummy_surface == EGL_NO_SURFACE)
{
_cogl_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_CONTEXT,
"Failed to create dummy EGL surface");
return FALSE;
}
}
if (!_cogl_winsys_egl_make_current (display,
egl_display->dummy_surface,
egl_display->dummy_surface,
egl_display->egl_context))
{
_cogl_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_CONTEXT,
"Failed to make context current");
return FALSE;
}
return TRUE;
}
static void
_cogl_winsys_egl_cleanup_context (CoglDisplay *display)
{
CoglDisplayEGL *egl_display = display->winsys;
CoglDisplayKMS *kms_display = egl_display->platform;
CoglRenderer *renderer = display->renderer;
CoglRendererEGL *egl_renderer = renderer->winsys;
if (egl_display->dummy_surface != EGL_NO_SURFACE)
{
eglDestroySurface (egl_renderer->edpy, egl_display->dummy_surface);
egl_display->dummy_surface = EGL_NO_SURFACE;
}
if (kms_display->dummy_gbm_surface != NULL)
{
gbm_surface_destroy (kms_display->dummy_gbm_surface);
kms_display->dummy_gbm_surface = NULL;
}
}
static void
_cogl_winsys_onscreen_swap_buffers_with_damage (CoglOnscreen *onscreen,
const int *rectangles,
int n_rectangles)
{
CoglContext *context = COGL_FRAMEBUFFER (onscreen)->context;
CoglDisplayEGL *egl_display = context->display->winsys;
CoglDisplayKMS *kms_display = egl_display->platform;
CoglRenderer *renderer = context->display->renderer;
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererKMS *kms_renderer = egl_renderer->platform;
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
CoglOnscreenKMS *kms_onscreen = egl_onscreen->platform;
uint32_t handle, stride;
CoglFlipKMS *flip;
/* If we already have a pending swap then block until it completes */
while (kms_onscreen->next_fb_id != 0)
handle_drm_event (kms_renderer);
if (kms_onscreen->pending_egl_surface)
{
eglDestroySurface (egl_renderer->edpy, egl_onscreen->egl_surface);
egl_onscreen->egl_surface = kms_onscreen->pending_egl_surface;
kms_onscreen->pending_egl_surface = NULL;
_cogl_framebuffer_winsys_update_size (COGL_FRAMEBUFFER (kms_display->onscreen),
kms_display->width, kms_display->height);
context->current_draw_buffer_changes |= COGL_FRAMEBUFFER_STATE_BIND;
}
parent_vtable->onscreen_swap_buffers_with_damage (onscreen,
rectangles,
n_rectangles);
if (kms_onscreen->pending_surface)
{
free_current_bo (onscreen);
gbm_surface_destroy (kms_onscreen->surface);
kms_onscreen->surface = kms_onscreen->pending_surface;
kms_onscreen->pending_surface = NULL;
}
/* Now we need to set the CRTC to whatever is the front buffer */
kms_onscreen->next_bo = gbm_surface_lock_front_buffer (kms_onscreen->surface);
#if (COGL_VERSION_ENCODE (COGL_GBM_MAJOR, COGL_GBM_MINOR, COGL_GBM_MICRO) >= \
COGL_VERSION_ENCODE (8, 1, 0))
stride = gbm_bo_get_stride (kms_onscreen->next_bo);
#else
stride = gbm_bo_get_pitch (kms_onscreen->next_bo);
#endif
handle = gbm_bo_get_handle (kms_onscreen->next_bo).u32;
if (drmModeAddFB (kms_renderer->fd,
kms_display->width,
kms_display->height,
24, /* depth */
32, /* bpp */
stride,
handle,
&kms_onscreen->next_fb_id))
{
g_warning ("Failed to create new back buffer handle: %m");
gbm_surface_release_buffer (kms_onscreen->surface,
kms_onscreen->next_bo);
kms_onscreen->next_bo = NULL;
kms_onscreen->next_fb_id = 0;
return;
}
/* If this is the first framebuffer to be presented then we now setup the
* crtc modes, else we flip from the previous buffer */
if (kms_display->pending_set_crtc)
{
setup_crtc_modes (context->display, kms_onscreen->next_fb_id);
kms_display->pending_set_crtc = FALSE;
}
flip = g_slice_new0 (CoglFlipKMS);
flip->onscreen = onscreen;
flip_all_crtcs (context->display, flip, kms_onscreen->next_fb_id);
if (flip->pending == 0)
{
drmModeRmFB (kms_renderer->fd, kms_onscreen->next_fb_id);
gbm_surface_release_buffer (kms_onscreen->surface,
kms_onscreen->next_bo);
kms_onscreen->next_bo = NULL;
kms_onscreen->next_fb_id = 0;
g_slice_free (CoglFlipKMS, flip);
flip = NULL;
queue_swap_notify_for_onscreen (onscreen);
}
else
{
/* Ensure the onscreen remains valid while it has any pending flips... */
cogl_object_ref (flip->onscreen);
/* Process flip right away if we can't wait for vblank */
if (kms_renderer->page_flips_not_supported)
{
setup_crtc_modes (context->display, kms_onscreen->next_fb_id);
process_flip (flip);
}
}
}
static CoglBool
_cogl_winsys_egl_context_init (CoglContext *context,
CoglError **error)
{
COGL_FLAGS_SET (context->features,
COGL_FEATURE_ID_SWAP_BUFFERS_EVENT, TRUE);
/* TODO: remove this deprecated feature */
COGL_FLAGS_SET (context->winsys_features,
COGL_WINSYS_FEATURE_SWAP_BUFFERS_EVENT,
TRUE);
COGL_FLAGS_SET (context->winsys_features,
COGL_WINSYS_FEATURE_SYNC_AND_COMPLETE_EVENT,
TRUE);
return TRUE;
}
static CoglBool
_cogl_winsys_onscreen_init (CoglOnscreen *onscreen,
CoglError **error)
{
CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
CoglContext *context = framebuffer->context;
CoglDisplay *display = context->display;
CoglDisplayEGL *egl_display = display->winsys;
CoglDisplayKMS *kms_display = egl_display->platform;
CoglRenderer *renderer = display->renderer;
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererKMS *kms_renderer = egl_renderer->platform;
CoglOnscreenEGL *egl_onscreen;
CoglOnscreenKMS *kms_onscreen;
_COGL_RETURN_VAL_IF_FAIL (egl_display->egl_context, FALSE);
if (kms_display->onscreen)
{
_cogl_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_ONSCREEN,
"Cannot have multiple onscreens in the KMS platform");
return FALSE;
}
kms_display->onscreen = onscreen;
onscreen->winsys = g_slice_new0 (CoglOnscreenEGL);
egl_onscreen = onscreen->winsys;
kms_onscreen = g_slice_new0 (CoglOnscreenKMS);
egl_onscreen->platform = kms_onscreen;
kms_onscreen->surface =
gbm_surface_create (kms_renderer->gbm,
kms_display->width,
kms_display->height,
GBM_FORMAT_XRGB8888,
GBM_BO_USE_SCANOUT |
GBM_BO_USE_RENDERING);
if (!kms_onscreen->surface)
{
_cogl_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_ONSCREEN,
"Failed to allocate surface");
return FALSE;
}
egl_onscreen->egl_surface =
eglCreateWindowSurface (egl_renderer->edpy,
egl_display->egl_config,
(EGLNativeWindowType) kms_onscreen->surface,
NULL);
if (egl_onscreen->egl_surface == EGL_NO_SURFACE)
{
_cogl_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_ONSCREEN,
"Failed to allocate surface");
return FALSE;
}
_cogl_framebuffer_winsys_update_size (framebuffer,
kms_display->width,
kms_display->height);
return TRUE;
}
static void
_cogl_winsys_onscreen_deinit (CoglOnscreen *onscreen)
{
CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
CoglContext *context = framebuffer->context;
CoglDisplay *display = context->display;
CoglDisplayEGL *egl_display = display->winsys;
CoglDisplayKMS *kms_display = egl_display->platform;
CoglRenderer *renderer = context->display->renderer;
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
CoglOnscreenKMS *kms_onscreen;
/* If we never successfully allocated then there's nothing to do */
if (egl_onscreen == NULL)
return;
kms_display->onscreen = NULL;
kms_onscreen = egl_onscreen->platform;
/* flip state takes a reference on the onscreen so there should
* never be outstanding flips when we reach here. */
g_return_if_fail (kms_onscreen->next_fb_id == 0);
free_current_bo (onscreen);
if (egl_onscreen->egl_surface != EGL_NO_SURFACE)
{
eglDestroySurface (egl_renderer->edpy, egl_onscreen->egl_surface);
egl_onscreen->egl_surface = EGL_NO_SURFACE;
}
if (kms_onscreen->surface)
{
gbm_surface_destroy (kms_onscreen->surface);
kms_onscreen->surface = NULL;
}
g_slice_free (CoglOnscreenKMS, kms_onscreen);
g_slice_free (CoglOnscreenEGL, onscreen->winsys);
onscreen->winsys = NULL;
}
static const CoglWinsysEGLVtable
_cogl_winsys_egl_vtable =
{
.display_setup = _cogl_winsys_egl_display_setup,
.display_destroy = _cogl_winsys_egl_display_destroy,
.context_created = _cogl_winsys_egl_context_created,
.cleanup_context = _cogl_winsys_egl_cleanup_context,
.context_init = _cogl_winsys_egl_context_init
};
const CoglWinsysVtable *
_cogl_winsys_egl_kms_get_vtable (void)
{
static CoglBool vtable_inited = FALSE;
static CoglWinsysVtable vtable;
if (!vtable_inited)
{
/* The EGL_KMS winsys is a subclass of the EGL winsys so we
start by copying its vtable */
parent_vtable = _cogl_winsys_egl_get_vtable ();
vtable = *parent_vtable;
vtable.id = COGL_WINSYS_ID_EGL_KMS;
vtable.name = "EGL_KMS";
vtable.renderer_connect = _cogl_winsys_renderer_connect;
vtable.renderer_disconnect = _cogl_winsys_renderer_disconnect;
vtable.onscreen_init = _cogl_winsys_onscreen_init;
vtable.onscreen_deinit = _cogl_winsys_onscreen_deinit;
/* The KMS winsys doesn't support swap region */
vtable.onscreen_swap_region = NULL;
vtable.onscreen_swap_buffers_with_damage =
_cogl_winsys_onscreen_swap_buffers_with_damage;
vtable_inited = TRUE;
}
return &vtable;
}
void
cogl_kms_renderer_set_kms_fd (CoglRenderer *renderer,
int fd)
{
_COGL_RETURN_IF_FAIL (cogl_is_renderer (renderer));
/* NB: Renderers are considered immutable once connected */
_COGL_RETURN_IF_FAIL (!renderer->connected);
renderer->kms_fd = fd;
}
struct gbm_device *
cogl_kms_renderer_get_gbm (CoglRenderer *renderer)
{
_COGL_RETURN_VAL_IF_FAIL (cogl_is_renderer (renderer), NULL);
if (renderer->connected)
{
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererKMS *kms_renderer = egl_renderer->platform;
return kms_renderer->gbm;
}
else
return NULL;
}
int
cogl_kms_renderer_get_kms_fd (CoglRenderer *renderer)
{
_COGL_RETURN_VAL_IF_FAIL (cogl_is_renderer (renderer), -1);
if (renderer->connected)
{
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererKMS *kms_renderer = egl_renderer->platform;
return kms_renderer->fd;
}
else
return -1;
}
void
cogl_kms_display_queue_modes_reset (CoglDisplay *display)
{
if (display->setup)
{
CoglDisplayEGL *egl_display = display->winsys;
CoglDisplayKMS *kms_display = egl_display->platform;
kms_display->pending_set_crtc = TRUE;
}
}
CoglBool
cogl_kms_display_set_layout (CoglDisplay *display,
int width,
int height,
CoglKmsCrtc **crtcs,
int n_crtcs,
CoglError **error)
{
CoglDisplayEGL *egl_display = display->winsys;
CoglDisplayKMS *kms_display = egl_display->platform;
CoglRenderer *renderer = display->renderer;
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererKMS *kms_renderer = egl_renderer->platform;
GList *crtc_list;
int i;
if ((width != kms_display->width ||
height != kms_display->height) &&
kms_display->onscreen)
{
CoglOnscreenEGL *egl_onscreen = kms_display->onscreen->winsys;
CoglOnscreenKMS *kms_onscreen = egl_onscreen->platform;
struct gbm_surface *new_surface;
EGLSurface new_egl_surface;
/* Need to drop the GBM surface and create a new one */
new_surface = gbm_surface_create (kms_renderer->gbm,
width, height,
GBM_FORMAT_XRGB8888,
GBM_BO_USE_SCANOUT |
GBM_BO_USE_RENDERING);
if (!new_surface)
{
_cogl_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_ONSCREEN,
"Failed to allocate new surface");
return FALSE;
}
new_egl_surface =
eglCreateWindowSurface (egl_renderer->edpy,
egl_display->egl_config,
(EGLNativeWindowType) new_surface,
NULL);
if (new_egl_surface == EGL_NO_SURFACE)
{
_cogl_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_ONSCREEN,
"Failed to allocate new surface");
gbm_surface_destroy (new_surface);
return FALSE;
}
if (kms_onscreen->pending_egl_surface)
eglDestroySurface (egl_renderer->edpy, kms_onscreen->pending_egl_surface);
if (kms_onscreen->pending_surface)
gbm_surface_destroy (kms_onscreen->pending_surface);
kms_onscreen->pending_surface = new_surface;
kms_onscreen->pending_egl_surface = new_egl_surface;
}
kms_display->width = width;
kms_display->height = height;
g_list_free_full (kms_display->crtcs, (GDestroyNotify) crtc_free);
crtc_list = NULL;
for (i = 0; i < n_crtcs; i++)
{
crtc_list = g_list_prepend (crtc_list, crtc_copy (crtcs[i]));
}
crtc_list = g_list_reverse (crtc_list);
kms_display->crtcs = crtc_list;
kms_display->pending_set_crtc = TRUE;
return TRUE;
}
void
cogl_kms_display_set_ignore_crtc (CoglDisplay *display,
uint32_t id,
CoglBool ignore)
{
CoglDisplayEGL *egl_display = display->winsys;
CoglDisplayKMS *kms_display = egl_display->platform;
GList *l;
for (l = kms_display->crtcs; l; l = l->next)
{
CoglKmsCrtc *crtc = l->data;
if (crtc->id == id)
{
crtc->ignore = ignore;
break;
}
}
}
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