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mutter/cogl/winsys/cogl-winsys-egl-kms.c
Robert Bragg a0441778ad This re-licenses Cogl 1.18 under the MIT license 
Since the Cogl 1.18 branch is actively maintained in parallel with the
master branch; this is a counter part to commit 1b83ef938fc16b which
re-licensed the master branch to use the MIT license.

This re-licensing is a follow up to the proposal that was sent to the
Cogl mailing list:
http://lists.freedesktop.org/archives/cogl/2013-December/001465.html

Note: there was a copyright assignment policy in place for Clutter (and
therefore Cogl which was part of Clutter at the time) until the 11th of
June 2010 and so we only checked the details after that point (commit
0bbf50f905)

For each file, authors were identified via this Git command:
$ git blame -p -C -C -C20 -M -M10  0bbf50f905..HEAD

We received blanket approvals for re-licensing all Red Hat and Collabora
contributions which reduced how many people needed to be contacted
individually:
- http://lists.freedesktop.org/archives/cogl/2013-December/001470.html
- http://lists.freedesktop.org/archives/cogl/2014-January/001536.html

Individual approval requests were sent to all the other identified authors
who all confirmed the re-license on the Cogl mailinglist:
http://lists.freedesktop.org/archives/cogl/2014-January

As well as updating the copyright header in all sources files, the
COPYING file has been updated to reflect the license change and also
document the other licenses used in Cogl such as the SGI Free Software
License B, version 2.0 and the 3-clause BSD license.

This patch was not simply cherry-picked from master; but the same
methodology was used to check the source files.
2014-02-22 02:02:53 +00:00

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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 <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;
struct gbm_device *gbm;
CoglClosure *swap_notify_idle;
} 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;
} 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 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
page_flip_handler (int fd,
unsigned int frame,
unsigned int sec,
unsigned int usec,
void *data)
{
CoglFlipKMS *flip = data;
/* 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;
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;
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
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;
/* The EGL API doesn't provide for a way to explicitly select a
* platform when the driver can support multiple. Mesa allows
* selection using an environment variable though so that's what
* we're doing here... */
g_setenv ("EGL_PLATFORM", "drm", 1);
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;
_cogl_poll_renderer_add_fd (renderer,
kms_renderer->fd,
COGL_POLL_FD_EVENT_IN,
NULL, /* no prepare callback */
dispatch_kms_events,
renderer);
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->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;
for (l = kms_display->crtcs; l; l = l->next)
{
CoglKmsCrtc *crtc = l->data;
int ret;
if (crtc->count == 0)
continue;
ret = drmModePageFlip (kms_renderer->fd,
crtc->id, fb_id,
DRM_MODE_PAGE_FLIP_EVENT, flip);
if (ret)
{
g_warning ("Failed to flip: %m");
continue;
}
flip->pending++;
}
}
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);
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];
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;
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
_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);
parent_vtable->onscreen_swap_buffers_with_damage (onscreen,
rectangles,
n_rectangles);
/* 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;
}
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);
/* 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_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;
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;
}
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_BO_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,
(NativeWindowType) 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;
}
eglDestroySurface (egl_renderer->edpy, egl_onscreen->egl_surface);
gbm_surface_destroy (kms_onscreen->surface);
kms_onscreen->surface = new_surface;
egl_onscreen->egl_surface = new_egl_surface;
_cogl_framebuffer_winsys_update_size (COGL_FRAMEBUFFER (kms_display->onscreen), width, height);
}
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;
}
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