mutter/cogl/winsys/cogl-winsys-egl-kms.c
Robert Bragg df21e20f65 Adds CoglError api
Although we use GLib internally in Cogl we would rather not leak GLib
api through Cogl's own api, except through explicitly namespaced
cogl_glib_ / cogl_gtype_ feature apis.

One of the benefits we see to not leaking GLib through Cogl's public API
is that documentation for Cogl won't need to first introduce the Glib
API to newcomers, thus hopefully lowering the barrier to learning Cogl.

This patch provides a Cogl specific typedef for reporting runtime errors
which by no coincidence matches the typedef for GError exactly.  If Cogl
is built with --enable-glib (default) then developers can even safely
assume that a CoglError is a GError under the hood.

This patch also enforces a consistent policy for when NULL is passed as
an error argument and an error is thrown. In this case we log the error
and abort the application, instead of silently ignoring it. In common
cases where nothing has been implemented to handle a particular error
and/or where applications are just printing the error and aborting
themselves then this saves some typing. This also seems more consistent
with language based exceptions which usually cause a program to abort if
they are not explicitly caught (which passing a non-NULL error signifies
in this case)

Since this policy for NULL error pointers is stricter than the standard
GError convention, there is a clear note in the documentation to warn
developers that are used to using the GError api.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit b068d5ea09ab32c37e8c965fc8582c85d1b2db46)

Note: Since we can't change the Cogl 1.x api the patch was changed to
not rename _error_quark() functions to be _error_domain() functions and
although it's a bit ugly, instead of providing our own CoglError type
that's compatible with GError we simply #define CoglError to GError
unless Cogl is built with glib disabled.

Note: this patch does technically introduce an API break since it drops
the cogl_error_get_type() symbol generated by glib-mkenum (Since the
CoglError enum was replaced by a CoglSystemError enum) but for now we
are assuming that this will not affect anyone currently using the Cogl
API. If this does turn out to be a problem in practice then we would be
able to fix this my manually copying an implementation of
cogl_error_get_type() generated by glib-mkenum into a compatibility
source file and we could also define the original COGL_ERROR_ enums for
compatibility too.

Note: another minor concern with cherry-picking this patch to the 1.14
branch is that an api scanner would be lead to believe that some APIs
have changed, and for example the gobject-introspection parser which
understands the semantics of GError will not understand the semantics of
CoglError. We expect most people that have tried to use
gobject-introspection with Cogl already understand though that it is not
well suited to generating bindings of the Cogl api anyway and we aren't
aware or anyone depending on such bindings for apis involving GErrors.
(GnomeShell only makes very-very minimal use of Cogl via the gjs
bindings for the cogl_rectangle and cogl_color apis.)

The main reason we have cherry-picked this patch to the 1.14 branch
even given the above concerns is that without it it would become very
awkward for us to cherry-pick other beneficial patches from master.
2013-01-22 17:47:39 +00:00

1005 lines
29 KiB
C

/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*
* 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 <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"
static const CoglWinsysEGLVtable _cogl_winsys_egl_vtable;
static const CoglWinsysVtable *parent_vtable;
typedef struct _CoglRendererKMS
{
int fd;
struct gbm_device *gbm;
CoglPollFD poll_fd;
} CoglRendererKMS;
typedef struct _CoglOutputKMS
{
drmModeConnector *connector;
drmModeEncoder *encoder;
drmModeCrtc *saved_crtc;
drmModeModeInfo *modes;
int n_modes;
drmModeModeInfo mode;
} CoglOutputKMS;
typedef struct _CoglDisplayKMS
{
GList *outputs;
int width, height;
CoglBool pending_set_crtc;
CoglBool pending_swap_notify;
struct gbm_surface *dummy_gbm_surface;
} 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;
} 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;
eglTerminate (egl_renderer->edpy);
g_slice_free (CoglRendererKMS, kms_renderer);
g_slice_free (CoglRendererEGL, egl_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 = open (device_name, O_RDWR);
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 close_fd;
}
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 destroy_gbm_device;
}
if (!_cogl_winsys_egl_renderer_connect_common (renderer, error))
goto egl_terminate;
kms_renderer->poll_fd.fd = kms_renderer->fd;
kms_renderer->poll_fd.events = COGL_POLL_FD_EVENT_IN;
return TRUE;
egl_terminate:
eglTerminate (egl_renderer->edpy);
destroy_gbm_device:
gbm_device_destroy (kms_renderer->gbm);
close_fd:
close (kms_renderer->fd);
_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->outputs; l; l = l->next)
{
CoglOutputKMS *output = l->data;
int ret = drmModeSetCrtc (kms_renderer->fd,
output->encoder->crtc_id,
fb_id, 0, 0,
&output->connector->connector_id, 1,
&output->mode);
if (ret)
g_warning ("Failed to set crtc mode %s: %m", output->mode.name);
}
}
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;
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);
kms_display->outputs = g_list_append (kms_display->outputs, output0);
if (!output0)
return FALSE;
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];
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_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;
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,
(NativeWindowType) 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
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
page_flip_handler (int fd,
unsigned int frame,
unsigned int sec,
unsigned int usec,
void *data)
{
CoglFlipKMS *flip = data;
CoglOnscreen *onscreen = flip->onscreen;
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
CoglOnscreenKMS *kms_onscreen = egl_onscreen->platform;
CoglContext *context = COGL_FRAMEBUFFER (onscreen)->context;
CoglDisplay *display = context->display;
CoglDisplayEGL *egl_display = display->winsys;
CoglDisplayKMS *kms_display = egl_display->platform;
/* We're only ready to dispatch a swap notification once all outputs
* have flipped... */
flip->pending--;
if (flip->pending == 0)
{
/* We only want to notify that the swap is complete when the application
* calls cogl_context_dispatch so instead of immediately notifying we'll
* set a flag to remember to notify later */
kms_display->pending_swap_notify = TRUE;
kms_onscreen->pending_swap_notify = TRUE;
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
handle_drm_event (CoglRendererKMS *kms_renderer)
{
drmEventContext evctx;
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
_cogl_winsys_onscreen_swap_buffers (CoglOnscreen *onscreen)
{
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;
GList *l;
/* If we already have a pending swap then block until it completes */
while (kms_onscreen->next_fb_id != 0)
handle_drm_event (kms_renderer);
/* First chain-up. This will call eglSwapBuffers */
parent_vtable->onscreen_swap_buffers (onscreen);
/* 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... */
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;
for (l = kms_display->outputs; l; l = l->next)
{
CoglOutputKMS *output = l->data;
if (drmModePageFlip (kms_renderer->fd,
output->encoder->crtc_id,
kms_onscreen->next_fb_id,
DRM_MODE_PAGE_FLIP_EVENT,
flip))
{
g_warning ("Failed to flip: %m");
continue;
}
flip->pending++;
}
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;
}
else
{
/* Ensure the onscreen remains valid while it has any pending flips... */
cogl_object_ref (flip->onscreen);
}
}
static CoglBool
_cogl_winsys_egl_context_init (CoglContext *context,
CoglError **error)
{
COGL_FLAGS_SET (context->features,
COGL_FEATURE_ID_SWAP_BUFFERS_EVENT, TRUE);
COGL_FLAGS_SET (context->winsys_features,
COGL_WINSYS_FEATURE_SWAP_BUFFERS_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);
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_BO_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,
(NativeWindowType) 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;
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_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 void
_cogl_winsys_poll_get_info (CoglContext *context,
CoglPollFD **poll_fds,
int *n_poll_fds,
int64_t *timeout)
{
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;
*poll_fds = &kms_renderer->poll_fd;
*n_poll_fds = 1;
/* If we've already got a pending swap notify then we'll dispatch
immediately */
*timeout = kms_display->pending_swap_notify ? 0 : -1;
}
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)
{
_cogl_onscreen_notify_swap_buffers (onscreen);
kms_onscreen->pending_swap_notify = FALSE;
}
}
}
static void
_cogl_winsys_poll_dispatch (CoglContext *context,
const CoglPollFD *poll_fds,
int n_poll_fds)
{
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;
int i;
for (i = 0; i < n_poll_fds; i++)
if (poll_fds[i].fd == kms_renderer->fd)
{
if (poll_fds[i].revents)
handle_drm_event (kms_renderer);
break;
}
if (kms_display->pending_swap_notify)
{
g_list_foreach (context->framebuffers,
flush_pending_swap_notify_cb,
NULL);
kms_display->pending_swap_notify = FALSE;
}
}
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 = _cogl_winsys_onscreen_swap_buffers;
vtable.poll_get_info = _cogl_winsys_poll_get_info;
vtable.poll_dispatch = _cogl_winsys_poll_dispatch;
vtable_inited = TRUE;
}
return &vtable;
}
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;
}
}