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MetaRendererNative: Use pbuffer surface as dummy surface

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Lets use a pbuffer surface as a dummy surface instead of a gbm based
one, so that we don't need to rely on the availability of gbm to create
a dummy surface when there is no need for it.

https://bugzilla.gnome.org/show_bug.cgi?id=773629
This commit is contained in:
Jonas Ådahl 2016-08-31 11:25:45 +08:00
parent f7cd6af9c6
commit da1c1d9c22
3 changed files with 108 additions and 28 deletions
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63
src/backends/meta-egl.c
View File

@ -200,6 +200,69 @@ meta_egl_get_display (MetaEgl *egl,
return display;
}
gboolean
meta_egl_choose_config (MetaEgl *egl,
EGLDisplay display,
const EGLint *attrib_list,
EGLConfig *chosen_config,
GError **error)
{
EGLint num_configs;
EGLConfig *configs;
EGLint num_matches;
if (!eglGetConfigs (display, NULL, 0, &num_configs))
{
set_egl_error (error);
return FALSE;
}
if (num_configs < 1)
{
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_FAILED,
"No EGL configurations available");
return FALSE;
}
configs = g_new0 (EGLConfig, num_configs);
if (!eglChooseConfig (display, attrib_list, configs, num_configs, &num_matches))
{
g_free (configs);
set_egl_error (error);
return FALSE;
}
/*
* We don't have any preference specified yet, so lets choose the first one.
*/
*chosen_config = configs[0];
g_free (configs);
return TRUE;
}
EGLSurface
meta_egl_create_pbuffer_surface (MetaEgl *egl,
EGLDisplay display,
EGLConfig config,
const EGLint *attrib_list,
GError **error)
{
EGLSurface surface;
surface = eglCreatePbufferSurface (display, config, attrib_list);
if (surface == EGL_NO_SURFACE)
{
set_egl_error (error);
return EGL_NO_SURFACE;
}
return surface;
}
static gboolean
is_egl_proc_valid_real (void *proc,
const char *proc_name,

12
src/backends/meta-egl.h
View File

@ -42,6 +42,18 @@ EGLDisplay meta_egl_get_display (MetaEgl *egl,
EGLNativeDisplayType display_id,
GError **error);
gboolean meta_egl_choose_config (MetaEgl *egl,
EGLDisplay display,
const EGLint *attrib_list,
EGLConfig *chosen_config,
GError **error);
EGLSurface meta_egl_create_pbuffer_surface (MetaEgl *egl,
EGLDisplay display,
EGLConfig config,
const EGLint *attrib_list,
GError **error);
EGLDisplay meta_egl_get_platform_display (MetaEgl *egl,
EGLenum platform,
void *native_display,

61
src/backends/native/meta-renderer-native.c
View File

@ -95,8 +95,6 @@ struct _MetaRendererNative
CoglClosure *swap_notify_idle;
int64_t frame_counter;
struct gbm_surface *dummy_gbm_surface;
};
static void
@ -281,6 +279,37 @@ meta_renderer_native_destroy_egl_display (CoglDisplay *cogl_display)
{
}
static EGLSurface
create_dummy_pbuffer_surface (EGLDisplay egl_display,
GError **error)
{
MetaBackend *backend = meta_get_backend ();
MetaEgl *egl = meta_backend_get_egl (backend);
EGLConfig pbuffer_config;
static const EGLint pbuffer_config_attribs[] = {
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_RED_SIZE, 1,
EGL_GREEN_SIZE, 1,
EGL_BLUE_SIZE, 1,
EGL_ALPHA_SIZE, 0,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_NONE
};
static const EGLint pbuffer_attribs[] = {
EGL_WIDTH, 16,
EGL_HEIGHT, 16,
EGL_NONE
};
if (!meta_egl_choose_config (egl, egl_display, pbuffer_config_attribs,
&pbuffer_config, error))
return EGL_NO_SURFACE;
return meta_egl_create_pbuffer_surface (egl, egl_display,
pbuffer_config, pbuffer_attribs,
error);
}
static gboolean
meta_renderer_native_egl_context_created (CoglDisplay *cogl_display,
GError **error)
@ -288,37 +317,14 @@ meta_renderer_native_egl_context_created (CoglDisplay *cogl_display,
CoglDisplayEGL *egl_display = cogl_display->winsys;
CoglRenderer *cogl_renderer = cogl_display->renderer;
CoglRendererEGL *egl_renderer = cogl_renderer->winsys;
MetaRendererNative *renderer_native = egl_renderer->platform;
if ((egl_renderer->private_features &
COGL_EGL_WINSYS_FEATURE_SURFACELESS_CONTEXT) == 0)
{
renderer_native->dummy_gbm_surface =
gbm_surface_create (renderer_native->gbm.device,
16, 16,
GBM_FORMAT_XRGB8888,
GBM_BO_USE_RENDERING);
if (!renderer_native->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)
renderer_native->dummy_gbm_surface,
NULL);
create_dummy_pbuffer_surface (egl_renderer->edpy, error);
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;
}
return FALSE;
}
if (!_cogl_winsys_egl_make_current (cogl_display,
@ -1228,7 +1234,6 @@ meta_renderer_native_finalize (GObject *object)
{
MetaRendererNative *renderer_native = META_RENDERER_NATIVE (object);
g_clear_pointer (&renderer_native->dummy_gbm_surface, gbm_surface_destroy);
g_clear_pointer (&renderer_native->gbm.device, gbm_device_destroy);
G_OBJECT_CLASS (meta_renderer_native_parent_class)->finalize (object);