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

clutter-offscreen-effect: Don't recreate the material when FBO changes

Browse Source 
Previously whenever the size of the FBO changes it would create a new
material and attach the texture to it. This is not good for Cogl
because it throws away any cached state for the material. In
test-rotate the size of the FBO changes constantly so it effectively
uses a new material every paint. For shader effects this also ends up
relinking the shader every paint because the linked programs are part
of the material state.
This commit is contained in:
Neil Roberts 2010-11-25 10:56:50 +00:00
parent 1b2a748d6c
commit 6ddb839711
1 changed files with 5 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
clutter/clutter-offscreen-effect.c
View File

@ -152,12 +152,7 @@ update_fbo (ClutterEffect *effect, int fbo_width, int fbo_height)
priv->target_height == fbo_height)
return TRUE;
if (priv->target != COGL_INVALID_HANDLE)
{
cogl_handle_unref (priv->target);
cogl_handle_unref (priv->offscreen);
}
if (priv->target == COGL_INVALID_HANDLE)
priv->target = cogl_material_new ();
texture =
@ -175,6 +170,9 @@ update_fbo (ClutterEffect *effect, int fbo_width, int fbo_height)
priv->target_width = cogl_texture_get_width (texture);
priv->target_height = cogl_texture_get_height (texture);
if (priv->offscreen != COGL_INVALID_HANDLE)
cogl_handle_unref (priv->offscreen);
priv->offscreen = cogl_offscreen_new_to_texture (texture);
if (priv->offscreen == COGL_INVALID_HANDLE)
{