diff options
| author | Eduardo Lima Mitev <[email protected]> | 2016-11-23 14:44:05 +0100 |
|---|---|---|
| committer | Eduardo Lima Mitev <[email protected]> | 2016-11-24 08:23:45 +0100 |
| commit | 89cbe0d21f8ed47f992b04b4a5595c4801d2b397 (patch) | |
| tree | c275b9e3fcabf58319de2f7608bcc0f23899455e /src/mesa/main/texobj.c | |
| parent | 3233a9fe0bae9e6dd52a0d5a5c19f338960e8487 (diff) | |
main/texobj: Check that texture id > 0 before looking it up in hash-table
_mesa_lookup_texture_err() is not currently checking that the
texture-id can be zero, but _mesa_HashLookup() doesn't expect the key
to be zero, and will fail an assertion.
Considering that _mesa_lookup_texture_err() is called from
_mesa_GetTextureImage and _mesa_GetTextureSubImage with user provided
arguments, we must validate the texture-id before looking it up in the
hash-table.
Reviewed-by: Nicolai Hähnle <[email protected]>
Diffstat (limited to 'src/mesa/main/texobj.c')
| -rw-r--r-- | src/mesa/main/texobj.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/mesa/main/texobj.c b/src/mesa/main/texobj.c index fbd498dd935..e5b70701c44 100644 --- a/src/mesa/main/texobj.c +++ b/src/mesa/main/texobj.c @@ -116,9 +116,10 @@ _mesa_lookup_texture(struct gl_context *ctx, GLuint id) struct gl_texture_object * _mesa_lookup_texture_err(struct gl_context *ctx, GLuint id, const char* func) { - struct gl_texture_object *texObj; + struct gl_texture_object *texObj = NULL; - texObj = _mesa_lookup_texture(ctx, id); /* Returns NULL if not found. */ + if (id > 0) + texObj = _mesa_lookup_texture(ctx, id); /* Returns NULL if not found. */ if (!texObj) _mesa_error(ctx, GL_INVALID_OPERATION, "%s(texture)", func); |