[Bug 91433] piglit.spec.arb_depth_buffer_float.fbo-depth-gl_depth_component32f-copypixels fails

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Sep 27 19:00:08 UTC 2018


--- Comment #4 from Nanley Chery <nanleychery at gmail.com> ---
(In reply to Illia from comment #3)
> https://patchwork.freedesktop.org/patch/249252/ fixes fail. When problem was
> reported intelCopyPixels() was using do_blit_copypixels(). Now
> intelCopyPixels() uses _mesa_meta_CopyPixels().  And pack_uint_Z_FLOAT32 
> doesn't work correctly. 

I found your v2 (https://patchwork.freedesktop.org/patch/249295/). Good catch.

I don't think we can delete pack_uint_Z_FLOAT32_X24S8 however, we need to copy
the S8 component of the buffer. I'm not sure why this test case still works
with your patch:

$ bin/fbo-depth copypixels GL_DEPTH32F_STENCIL8 -auto

Maybe we need to adjust the piglit test?

> I'm looking for a way  of not receiving this  message(Mesa 10.7.0-devel
> implementation error: Incorrectly writing swrast's integer depth values to
> MESA_FORMAT_Z_FLOAT32 depth buffer)

You can find the code which emits this error by grepping for part of the
message in the tree. I like using `git grep` personally.

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