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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [llvmpipe] SIGSEGV src/gallium/drivers/llvmpipe/lp_texture.c:600"
href="https://bugs.freedesktop.org/show_bug.cgi?id=77023#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [llvmpipe] SIGSEGV src/gallium/drivers/llvmpipe/lp_texture.c:600"
href="https://bugs.freedesktop.org/show_bug.cgi?id=77023">bug 77023</a>
from <span class="vcard"><a class="email" href="mailto:brianp@vmware.com" title="Brian Paul <brianp@vmware.com>"> <span class="fn">Brian Paul</span></a>
</span></b>
<pre>The problem is we're mapping the same texture (but different slices) multiple
times simultaneously. The state tracker doesn't support that.
This assertion fails if I put it in st_texture.c:
--- a/src/mesa/state_tracker/st_texture.c
+++ b/src/mesa/state_tracker/st_texture.c
@@ -256,6 +256,9 @@ st_texture_image_map(struct st_context *st, struct
st_textur
e_image *stImage,
else
level = stImage->base.Level;
+ /* check that the texture's not already mapped */
+ assert(!stImage->transfer);
+
return pipe_transfer_map_3d(st->pipe, stImage->pt, level, usage,
x, y, z + stImage->base.Face,
w, h, d, &stImage->transfer);
Gallium allows mapping multiple slices of a 3D texture, but not Mesa's
ctx->Driver.MapTextureImage.</pre>
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