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st/dri: Initialise modifier to INVALID for DRI2

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When allocating a buffer for DRI2, set the modifier to INVALID to inform
the backend that we have no supplied modifiers and it should do its own
thing. The missed initialisation forced linear, even if the
implementation had made other decisions.

This resulted in VC4 DRI2 clients failing with:
  Modifier 0x0 vs. tiling (0x700000000000001) mismatch

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reported-by: Andreas Müller <schnitzeltony@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Fixes: 3f8513172f ("gallium/winsys/drm: introduce modifier field to winsys_handle")
This commit is contained in:
Daniel Stone 2018-04-02 13:20:34 +01:00
parent 2be6143032
commit 4cbecb6168
1 changed files with 1 additions and 0 deletions
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src/gallium/state_trackers/dri/dri2.c
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@ -806,6 +806,7 @@ dri2_allocate_textures(struct dri_context *ctx,
whandle.handle = buf->name;
whandle.stride = buf->pitch;
whandle.offset = 0;
whandle.modifier = DRM_FORMAT_MOD_INVALID;
if (screen->can_share_buffer)
whandle.type = DRM_API_HANDLE_TYPE_SHARED;
else