diff options
| author | Brian Paul <brianp@vmware.com> | 2009-05-01 12:25:42 -0600 |
|---|---|---|
| committer | Brian Paul <brianp@vmware.com> | 2009-05-01 12:25:42 -0600 |
| commit | b85b315ebbe25efbd118887bdc87a562d4334fcc (patch) | |
| tree | 1db456c924ce8f0247f56c27c409d5dc9a122127 /src/mesa/state_tracker/st_cb_fbo.c | |
| parent | 30b3d800917cc5b41ec508fd38a0ae1da8624a36 (diff) | |
st: added st_renderbuffer::defined flag
Indicates whether there's defined image contents, or garbage/don't care.
This is set when we draw into a renderbuffer and cleared when we resize/
reallocate a renderbuffer or do a buffer swap (back buffer becomes undefined).
We use this to determine whether the front color buffer has been drawn to,
and whether to display its contents upon glFlush/Finish(), when the new
st_swapbuffers() function is used.
Diffstat (limited to 'src/mesa/state_tracker/st_cb_fbo.c')
| -rw-r--r-- | src/mesa/state_tracker/st_cb_fbo.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_cb_fbo.c b/src/mesa/state_tracker/st_cb_fbo.c index 0b88d9bf7e..fe9befaa2c 100644 --- a/src/mesa/state_tracker/st_cb_fbo.c +++ b/src/mesa/state_tracker/st_cb_fbo.c @@ -125,6 +125,8 @@ st_renderbuffer_alloc_storage(GLcontext * ctx, struct gl_renderbuffer *rb, strb->Base.Height = height; init_renderbuffer_bits(strb, template.format); + strb->defined = GL_FALSE; /* undefined contents now */ + /* Probably need dedicated flags for surface usage too: */ surface_usage = (PIPE_BUFFER_USAGE_GPU_READ | |