brl/mutter
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

journal: Support per-framebuffer journals

Browse Source 
Instead of having a single journal per context, we now have a
CoglJournal object for each CoglFramebuffer. This means we now don't
have to flush the journal when switching/pushing/popping between
different framebuffers so for example a Clutter scene that involves some
ClutterEffect actors that transiently redirect to an FBO can still be
batched.

This also allows us to track state in the journal that relates to the
current frame of its associated framebuffer which we'll need for our
optimization for using the CPU to handle reading a single pixel back
from a framebuffer when we know the whole scene is currently comprised
of simple rectangles in a journal.
This commit is contained in:
Robert Bragg
2011-01-06 13:25:45 +00:00
parent 5f35bd7b67
commit 1a5a4df326
21 changed files with 375 additions and 101 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
cogl/cogl.c
View File

@ -282,7 +282,7 @@ cogl_set_backface_culling_enabled (gboolean setting)
return;
/* Currently the journal can't track changes to backface culling state... */
_cogl_journal_flush ();
_cogl_framebuffer_flush_journal (_cogl_get_framebuffer ());
ctx->enable_backface_culling = setting;
}
@ -479,7 +479,12 @@ cogl_disable_fog (void)
void
cogl_flush (void)
{
_cogl_journal_flush ();
GList *l;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
for (l = ctx->framebuffers; l; l = l->next)
_cogl_framebuffer_flush_journal (l->data);
}
void
@ -505,8 +510,15 @@ _cogl_read_pixels_with_rowstride (int x,
g_return_if_fail (source == COGL_READ_PIXELS_COLOR_BUFFER);
/* make sure any batched primitives get emitted to the GL driver before
* issuing our read pixels... */
/* make sure any batched primitives get emitted to the GL driver
* before issuing our read pixels...
*
* XXX: Note we currently use cogl_flush to ensure *all* journals
* are flushed here and not _cogl_journal_flush because we don't
* track the dependencies between framebuffers so we don't know if
* the current framebuffer depends on the contents of other
* framebuffers which could also have associated journal entries.
*/
cogl_flush ();
framebuffer = _cogl_get_framebuffer ();