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zink: enable single-plane modifiers for generic 2D exports

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this should be fine; multi-plane ones won't work because not all callers
expect to get multiple fds back

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33675>
This commit is contained in:
Mike Blumenkrantz 2025-02-21 12:35:03 -05:00 • committed by Marge Bot
parent 237d8799be
commit df1ff3c711
1 changed files with 16 additions and 5 deletions
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21
src/gallium/drivers/zink/zink_resource.c
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@ -1727,16 +1727,27 @@ add_resource_bind(struct zink_context *ctx, struct zink_resource *res, unsigned
assert((res->base.b.bind & bind) == 0);
res->base.b.bind |= bind;
struct zink_resource_object *old_obj = res->obj;
ASSERTED uint64_t mod = DRM_FORMAT_MOD_INVALID;
ASSERTED uint64_t check_mod = false;
if (bind & ZINK_BIND_DMABUF && !res->modifiers_count && !res->obj->is_buffer && screen->info.have_EXT_image_drm_format_modifier) {
res->modifiers_count = 1;
/* it's improbable that drivers support non-linear modifiers for anything but 2D */
bool use_modifiers = res->base.b.target == PIPE_TEXTURE_2D;
res->modifiers_count = use_modifiers ? screen->modifier_props[res->base.b.format].drmFormatModifierCount : 1;
res->modifiers = malloc(res->modifiers_count * sizeof(uint64_t));
if (!res->modifiers) {
mesa_loge("ZINK: failed to allocate res->modifiers!");
return false;
}
mod = res->modifiers[0] = DRM_FORMAT_MOD_LINEAR;
if (use_modifiers) {
int idx = 0;
for (unsigned i = 0; i < screen->modifier_props[res->base.b.format].drmFormatModifierCount; i++) {
if (screen->modifier_props[res->base.b.format].pDrmFormatModifierProperties[i].drmFormatModifierPlaneCount == 1)
res->modifiers[idx++] = screen->modifier_props[res->base.b.format].pDrmFormatModifierProperties[i].drmFormatModifier;
}
res->modifiers_count = idx;
} else {
res->modifiers[0] = DRM_FORMAT_MOD_LINEAR;
}
check_mod = true;
}
struct zink_resource_object *new_obj = resource_object_create(screen, &res->base.b, NULL, &res->linear, res->modifiers, res->modifiers_count, NULL, NULL);
if (!new_obj) {
@ -1744,7 +1755,7 @@ add_resource_bind(struct zink_context *ctx, struct zink_resource *res, unsigned
res->base.b.bind &= ~bind;
return false;
}
assert(mod == DRM_FORMAT_MOD_INVALID || new_obj->modifier == DRM_FORMAT_MOD_LINEAR);
assert(!check_mod || new_obj->modifier != DRM_FORMAT_MOD_INVALID);
struct zink_resource staging = *res;
staging.obj = old_obj;
staging.all_binds = 0;