dri: don't call modifier interfaces when modifiers_count is 0
The wayland EGL platform sets the modifier count to 0 in some cases
to signal that modifiers should not be used, even if a list of modifiers
is present. The loader_dri_create_image helper didn't handle this case
properly and called the modifierful driver interface with a 0 modifier
count, leading to the obvious outcome of the driver being unable to
allocate an image.
Fixes: cb9ae4273d
("dri: add loader_dri_create_image helper")
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10903>
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@ -37,7 +37,7 @@ __DRIimage *loader_dri_create_image(__DRIscreen *screen,
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unsigned int modifiers_count,
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void *loaderPrivate)
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{
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if (modifiers &&
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if (modifiers && modifiers_count > 0 &&
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image->base.version > 14 && image->createImageWithModifiers) {
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bool has_valid_modifier = false;
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int i;
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