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drmmode: Track if BO allocation used modifiers

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Keep track of whether or not we fed modifiers into GBM when we allocated
a BO. We'll use this later inside Glamor, to reallocate buffer storage
if we allocate buffer storage using modifiers, and a non-modifier-aware
client requests an export of that pixmap.

This makes it possible to run a compositing manager on an old GLX/EGL
stack on top of an X server which allocates internal buffer storage
using exotic modifiers from modifier-aware GBM/EGL/KMS.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reported-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
This commit is contained in:
Daniel Stone 2018-04-04 16:16:33 +01:00 committed by Adam Jackson
parent 75bba3aedc
commit 0e9504e10c
2 changed files with 5 additions and 1 deletions
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5
hw/xfree86/drivers/modesetting/drmmode_display.c
View File

@ -752,13 +752,16 @@ drmmode_create_bo(drmmode_ptr drmmode, drmmode_bo *bo,
format, modifiers,
num_modifiers);
free(modifiers);
if (bo->gbm)
if (bo->gbm) {
bo->used_modifiers = TRUE;
return TRUE;
}
}
#endif
bo->gbm = gbm_bo_create(drmmode->gbm, width, height, format,
GBM_BO_USE_RENDERING | GBM_BO_USE_SCANOUT);
bo->used_modifiers = FALSE;
return bo->gbm != NULL;
}
#endif

1
hw/xfree86/drivers/modesetting/drmmode_display.h
View File

@ -75,6 +75,7 @@ typedef struct {
uint32_t height;
struct dumb_bo *dumb;
#ifdef GLAMOR_HAS_GBM
Bool used_modifiers;
struct gbm_bo *gbm;
#endif
} drmmode_bo;