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backends/native: Set offscreen on the transformed MetaRendererViews

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The texture is only created if the view is transformed at the software level,
otherwise the texture is NULL, and rendering happens on the onscreen.

https://bugzilla.gnome.org/show_bug.cgi?id=745079
This commit is contained in:
Carlos Garnacho 2016-08-01 03:48:30 +02:00
parent 8065ff5a37
commit 9e641f623f
1 changed files with 57 additions and 0 deletions
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57
src/backends/native/meta-renderer-native.c
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@ -885,6 +885,39 @@ meta_renderer_native_create_onscreen (MetaRendererNative *renderer,
return onscreen;
}
static CoglOffscreen *
meta_renderer_native_create_offscreen (MetaRendererNative *renderer,
CoglContext *context,
MetaMonitorTransform transform,
gint view_width,
gint view_height)
{
CoglOffscreen *fb;
CoglTexture2D *tex;
GError *error = NULL;
tex = cogl_texture_2d_new_with_size (context, view_width, view_height);
cogl_primitive_texture_set_auto_mipmap (COGL_PRIMITIVE_TEXTURE (tex), FALSE);
if (!cogl_texture_allocate (COGL_TEXTURE (tex), &error))
{
cogl_object_unref (tex);
return FALSE;
}
fb = cogl_offscreen_new_with_texture (COGL_TEXTURE (tex));
cogl_object_unref (tex);
if (!cogl_framebuffer_allocate (COGL_FRAMEBUFFER (fb), &error))
{
g_warning ("Could not create offscreen: %s", error->message);
g_error_free (error);
cogl_object_unref (fb);
return FALSE;
}
return fb;
}
gboolean
meta_renderer_native_set_legacy_view_size (MetaRendererNative *renderer_native,
MetaRendererView *view,
@ -1083,8 +1116,12 @@ meta_renderer_native_create_view (MetaRenderer *renderer,
MetaBackend *backend = meta_get_backend ();
ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (backend);
CoglContext *cogl_context = clutter_backend_get_cogl_context (clutter_backend);
CoglDisplay *cogl_display = cogl_context_get_display (cogl_context);
CoglDisplayEGL *egl_display = cogl_display->winsys;
CoglOnscreenEGL *egl_onscreen;
MetaMonitorTransform transform;
CoglOnscreen *onscreen = NULL;
CoglOffscreen *offscreen = NULL;
MetaRendererView *view;
transform = meta_renderer_native_get_monitor_info_transform (renderer,
@ -1098,13 +1135,33 @@ meta_renderer_native_create_view (MetaRenderer *renderer,
if (!onscreen)
meta_fatal ("Failed to allocate onscreen framebuffer\n");
/* Ensure we don't point to stale surfaces when creating the offscreen */
egl_onscreen = onscreen->winsys;
_cogl_winsys_egl_make_current (cogl_display,
egl_onscreen->egl_surface,
egl_onscreen->egl_surface,
egl_display->egl_context);
if (transform != META_MONITOR_TRANSFORM_NORMAL)
{
offscreen = meta_renderer_native_create_offscreen (META_RENDERER_NATIVE (renderer),
cogl_context,
transform,
monitor_info->rect.width,
monitor_info->rect.height);
if (!offscreen)
meta_fatal ("Failed to allocate back buffer texture\n");
}
view = g_object_new (META_TYPE_RENDERER_VIEW,
"layout", &monitor_info->rect,
"framebuffer", onscreen,
"offscreen", offscreen,
"monitor-info", monitor_info,
"transform", transform,
NULL);
cogl_object_unref (onscreen);
g_clear_pointer (&offscreen, cogl_object_unref);
meta_onscreen_native_set_view (onscreen, view);