[Mesa-dev] [Bug 107832] Gallium picking A16L16 formats when emulating INTENSITY16 conflicts with mesa

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Fri Sep 21 10:31:43 UTC 2018


--- Comment #1 from Juan A. Suarez <jasuarez at igalia.com> ---
A patch to fix this landed in upstream:

commit 47e01e77d8b658606527f048cda786440f7fbe85
Author: Gert Wollny <gert.wollny at collabora.com>
Date:   Mon Sep 10 12:39:44 2018 +0200

    mesa/texture: Also check for LA texture when querying intensity component

    Gallium may pick L16A16_FLOAT to represent GL_INTENSITY16F if no intensity
    format is provided by the driver. However, when calling

       glGetTexLevelParameteriv(..., GL_TEXTURE_INTENSITY_SIZE, ...)

    mesa will return a zero size because the actually used format has no
    intensity channel and as a fallback only the sizes of the red/green
    channels are checked.

    Also checking for LA sizes in the allocated texture resolves this problem.

    v2: Only check alpha channel size and return it (Marek)
        L and A size are always the same in this case.

    Fixes (on virgl):
      ext_framebuffer_multisample-fast-clear GL_ARB_texture_float *

    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107832

    Signed-off-by: Gert Wollny <gert.wollny at collabora.com>
    Reviewed-by: Marek Olšák <marek.olsak at amd.com>

 src/mesa/main/texparam.c | 5 +++++
 1 file changed, 5 insertions(+)

Can you check if this fixes the problem?

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