On 02/18/2013 10:16 AM, Brian Paul wrote:
From: Stefan Brüns <stefan.bru...@rwth-aachen.de>
A single element in a GLX reply is contained in the header itself.
The number of elements is denoted in the "n" field of the reply.
If "n" is 1, the length of additional data is 0.
The XXX_data_length() function of xcb does not return the length of
the (optional, n>1) data but the number of elements.
Fixes http://bugs.freedesktop.org/show_bug.cgi?id=59876
Note: This is a candidate for the stable branches.
Signed-off-by: Stefan Brüns <stefan.bru...@rwth-aachen.de>
Signed-off-by: Brian Paul <bri...@vmware.com>
Reviewed-by: Ian Romanick <ian.d.roman...@intel.com>
Sorry for the lag. I missed the first patch while I was out with the
FOSDEM flu. If nobody beats me to it, I'll commit it to master tomorrow
morning.
---
src/mapi/glapi/gen/glX_proto_send.py | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/src/mapi/glapi/gen/glX_proto_send.py
b/src/mapi/glapi/gen/glX_proto_send.py
index fbc0dd3..f4d519f 100644
--- a/src/mapi/glapi/gen/glX_proto_send.py
+++ b/src/mapi/glapi/gen/glX_proto_send.py
@@ -700,7 +700,9 @@ generic_%u_byte( GLint rop, const void * ptr )
if f.reply_always_array:
print ' (void)memcpy(%s, %s_data(reply),
%s_data_length(reply) * sizeof(%s));' % (output.name, xcb_name, xcb_name,
output.get_base_type_string())
else:
- print ' if (%s_data_length(reply) == 0)' %
(xcb_name)
+ print ' /* the XXX_data_length() xcb
function name is misleading, it returns the number */'
+ print ' /* of elements, not the length of
the data part. A single element is embedded. */'
+ print ' if (%s_data_length(reply) == 1)' %
(xcb_name)
print ' (void)memcpy(%s, &reply->datum,
sizeof(reply->datum));' % (output.name)
print ' else'
print ' (void)memcpy(%s,
%s_data(reply), %s_data_length(reply) * sizeof(%s));' % (output.name, xcb_name,
xcb_name, output.get_base_type_string())
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