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softpipe: check if so_target is NULL before accessing it

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No idea if this is working right but copied straight from llvmpipe.
(Not only does this check the so_target but also use buffer->data instead
of buffer for the mapping.)
Just trying to get rid of a segfault testing something else...

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
Reviewed-by: Zack Rusin <zackr@vmware.com>
This commit is contained in:
Roland Scheidegger 2013-08-30 16:34:26 +02:00
parent 289faa7e23
commit 81ab3e57bc
1 changed files with 5 additions and 2 deletions
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7
src/gallium/drivers/softpipe/sp_draw_arrays.c
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@ -107,8 +107,11 @@ softpipe_draw_vbo(struct pipe_context *pipe,
for (i = 0; i < sp->num_so_targets; i++) {
void *buf = softpipe_resource_data(sp->so_targets[i]->target.buffer);
sp->so_targets[i]->mapping = buf;
void *buf = 0;
if (sp->so_targets[i]) {
buf = softpipe_resource(sp->so_targets[i]->target.buffer)->data;
sp->so_targets[i]->mapping = buf;
}
}
draw_set_mapped_so_targets(draw, sp->num_so_targets,