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mutter/cogl/winsys/cogl-winsys-egl-kms.c
Robert Bragg 010d16f647 Adds initial GLES2 integration support 
This makes it possible to integrate existing GLES2 code with
applications using Cogl as the rendering api.

Currently all GLES2 usage is handled with separate GLES2 contexts to
ensure that GLES2 api usage doesn't interfere with Cogl's own use of
OpenGL[ES]. The api has been designed though so we can provide tighter
integration later.

The api would allow us to support GLES2 virtualized on top of an
OpenGL/GLX driver as well as GLES2 virtualized on the core rendering api
of Cogl itself. Virtualizing the GLES2 support on Cogl will allow us to
take advantage of Cogl debugging facilities as well as let us optimize
the cost of allocating multiple GLES2 contexts and switching between
them which can both be very expensive with many drivers.

As as a side effect of this patch Cogl can also now be used as a
portable window system binding API for GLES2 as an alternative to EGL.

Parts of this patch are based on work done by Tomeu Vizoso
<tomeu.vizoso@collabora.com> who did the first iteration of adding GLES2
API support to Cogl so that WebGL support could be added to
webkit-clutter.

This patch adds a very minimal cogl-gles2-context example that shows how
to create a gles2 context, clear the screen to a random color and also
draw a triangle with the cogl api.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 4bb6eff3dbd50d8fef7d6bdbed55c5aaa70036a8)
2012-08-06 14:27:42 +01:00

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/*
* 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"
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;
} 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,
GError **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 */
g_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)
{
g_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)
{
g_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,
GError **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)
{
g_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);
g_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,
GError **error)
{
CoglDisplayEGL *egl_display = display->winsys;
CoglDisplayKMS *kms_display;
CoglRendererEGL *egl_renderer = display->renderer->winsys;
CoglRendererKMS *kms_renderer = egl_renderer->platform;
CoglEGLWinsysFeature surfaceless_feature = 0;
const char *surfaceless_feature_name = "";
drmModeRes *resources;
CoglOutputKMS *output0, *output1;
CoglBool mirror;
kms_display = g_slice_new0 (CoglDisplayKMS);
egl_display->platform = kms_display;
switch (display->renderer->driver)
{
case COGL_DRIVER_GL:
surfaceless_feature = COGL_EGL_WINSYS_FEATURE_SURFACELESS_OPENGL;
surfaceless_feature_name = "opengl";
break;
case COGL_DRIVER_GLES1:
surfaceless_feature = COGL_EGL_WINSYS_FEATURE_SURFACELESS_GLES1;
surfaceless_feature_name = "gles1";
break;
case COGL_DRIVER_GLES2:
surfaceless_feature = COGL_EGL_WINSYS_FEATURE_SURFACELESS_GLES2;
surfaceless_feature_name = "gles2";
break;
case COGL_DRIVER_ANY:
g_return_val_if_reached (FALSE);
}
if (!(egl_renderer->private_features & surfaceless_feature))
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_INIT,
"EGL_KHR_surfaceless_%s extension not available",
surfaceless_feature_name);
return FALSE;
}
resources = drmModeGetResources (kms_renderer->fd);
if (!resources)
{
g_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))
{
g_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,
GError **error)
{
CoglRenderer *renderer = display->renderer;
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglDisplayEGL *egl_display = display->winsys;
if (!_cogl_winsys_egl_make_current (display,
EGL_NO_SURFACE,
EGL_NO_SURFACE,
egl_display->egl_context))
{
g_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)
{
}
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, pitch;
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);
pitch = gbm_bo_get_pitch (kms_onscreen->next_bo);
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 */
pitch,
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,
GError **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,
GError **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)
{
g_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)
{
g_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;
}
}
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