[PATCH v3 1/2] vkd3d: Do not destroy a heap until its resource count is zero.

[Conor McCarthy]

From: Conor McCarthy

Fixes a crash on exit in Horizon Zero Dawn (which requres added SM 6.0 support).

Placed resources should hold a reference to their heap:
https://learn.microsoft.com/en-us/windows/win32/api/d3d12/nf-d3d12-id3d12dev...
---
 libs/vkd3d/resource.c      | 17 ++++++++++++++---
 libs/vkd3d/vkd3d_private.h |  1 +
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/libs/vkd3d/resource.c b/libs/vkd3d/resource.c
index 8c050cfe..79db6666 100644
--- a/libs/vkd3d/resource.c
+++ b/libs/vkd3d/resource.c
@@ -346,12 +346,19 @@ static ULONG STDMETHODCALLTYPE d3d12_heap_Release(ID3D12Heap *iface)

TRACE("%p decreasing refcount to %u.\n", heap, refcount);

-    if (!refcount)
+    /* A heap must not be destroyed until all contained resources are destroyed. */
+    if (!refcount && !heap->resource_count)
         d3d12_heap_destroy(heap);

return refcount;
 }

+static void d3d12_heap_resource_destroyed(struct d3d12_heap *heap)
+{
+    if (!InterlockedDecrement(&heap->resource_count) && (!heap->refcount || heap->is_private))
+        d3d12_heap_destroy(heap);
+}
+
 static HRESULT STDMETHODCALLTYPE d3d12_heap_GetPrivateData(ID3D12Heap *iface,
         REFGUID guid, UINT *data_size, void *data)
 {
@@ -561,6 +568,7 @@ static HRESULT d3d12_heap_init(struct d3d12_heap *heap,

heap->ID3D12Heap_iface.lpVtbl = &d3d12_heap_vtbl;
     heap->refcount = 1;
+    heap->resource_count = 0;

heap->is_private = !!resource;

@@ -628,6 +636,8 @@ static HRESULT d3d12_heap_init(struct d3d12_heap *heap,
     heap->device = device;
     if (!heap->is_private)
         d3d12_device_add_ref(heap->device);
+    else
+        heap->resource_count = 1;

return S_OK;
 }
@@ -1027,8 +1037,8 @@ static void d3d12_resource_destroy(struct d3d12_resource *resource, struct d3d12
     else
         VK_CALL(vkDestroyImage(device->vk_device, resource->u.vk_image, NULL));

-    if (resource->flags & VKD3D_RESOURCE_DEDICATED_HEAP)
-        d3d12_heap_destroy(resource->heap);
+    if (resource->heap)
+        d3d12_heap_resource_destroyed(resource->heap);
 }

static ULONG d3d12_resource_incref(struct d3d12_resource *resource)
@@ -1941,6 +1951,7 @@ static HRESULT vkd3d_bind_heap_memory(struct d3d12_device *device,
     {
         resource->heap = heap;
         resource->heap_offset = heap_offset;
+        InterlockedIncrement(&heap->resource_count);
     }
     else
     {
diff --git a/libs/vkd3d/vkd3d_private.h b/libs/vkd3d/vkd3d_private.h
index 075b67c2..1a277a47 100644
--- a/libs/vkd3d/vkd3d_private.h
+++ b/libs/vkd3d/vkd3d_private.h
@@ -563,6 +563,7 @@ struct d3d12_heap
 {
     ID3D12Heap ID3D12Heap_iface;
     LONG refcount;
+    LONG resource_count;

bool is_private;
     D3D12_HEAP_DESC desc;