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broadcom/vc4: Don't advertise tiled dmabuf modifiers if we can't use them

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If the DRM_VC4_GET_TILING ioctl isn't present then we can't tell
if a dmabuf bo is tiled or linear, so will always assume it's
linear.

By not advertising tiled formats in this situation we ensure the
assumption is correct.

This fixes a bug where most attempts to render a gl wayland client
under weston will result in a client side abort.

Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Daniel Stone <daniels@collabora.com> (on irc)
This commit is contained in:
Derek Foreman 2017-10-05 12:41:08 -05:00 • committed by Eric Anholt
parent b174a1ae72
commit 17d78ece36
1 changed files with 18 additions and 13 deletions
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31
src/gallium/drivers/vc4/vc4_screen.c
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@ -549,25 +549,30 @@ vc4_screen_query_dmabuf_modifiers(struct pipe_screen *pscreen,
unsigned int *external_only,
int *count)
{
int m, i;
uint64_t available_modifiers[] = {
DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED,
DRM_FORMAT_MOD_LINEAR,
};
struct vc4_screen *screen = vc4_screen(pscreen);
int num_modifiers = screen->has_tiling_ioctl ? 2 : 1;
if (!modifiers) {
*count = 2;
*count = num_modifiers;
return;
}
*count = MIN2(max, 2);
*count = MIN2(max, num_modifiers);
m = screen->has_tiling_ioctl ? 0 : 1;
/* We support both modifiers (tiled and linear) for all sampler
* formats.
* formats, but if we don't have the DRM_VC4_GET_TILING ioctl
* we shouldn't advertise the tiled formats.
*/
modifiers[0] = DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED;
if (external_only)
external_only[0] = false;
if (max < 2)
return;
modifiers[1] = DRM_FORMAT_MOD_LINEAR;
if (external_only)
external_only[1] = false;
for (i = 0; i < *count; i++) {
modifiers[i] = available_modifiers[m++];
if (external_only)
external_only[i] = false;
}
}
#define PTR_TO_UINT(x) ((unsigned)((intptr_t)(x)))