[PATCH vkd3d] vkd3d: Use at least D3D12_SMALL_RESOURCE_PLACEMENT_ALIGNMENT for textures.

[Józef Kucia]

From: Józef Kucia

It's the smallest alignment for textures supported by D3D12. Vulkan
implementations may return lower values.

Signed-off-by: Józef Kucia 
---
 libs/vkd3d/device.c | 3 +++
 tests/d3d12.c       | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/libs/vkd3d/device.c b/libs/vkd3d/device.c
index c85405024e75..cf40e7a1f064 100644
--- a/libs/vkd3d/device.c
+++ b/libs/vkd3d/device.c
@@ -2062,6 +2062,7 @@ static D3D12_RESOURCE_ALLOCATION_INFO * STDMETHODCALLTYPE d3d12_device_GetResour
     }
     else
     {
+        /* FIXME: Should we support D3D12_DEFAULT_RESOURCE_PLACEMENT_ALIGNMENT for small MSSA resources? */
         if (desc->SampleDesc.Count != 1)
             default_alignment = D3D12_DEFAULT_MSAA_RESOURCE_PLACEMENT_ALIGNMENT;

@@ -2070,6 +2071,8 @@ static D3D12_RESOURCE_ALLOCATION_INFO * STDMETHODCALLTYPE d3d12_device_GetResour
             WARN("Failed to get allocation info for texture.\n");
             valid = false;
         }
+
+        info->Alignment = max(info->Alignment, D3D12_SMALL_RESOURCE_PLACEMENT_ALIGNMENT);
     }

if (valid && desc->Alignment % info->Alignment)
diff --git a/tests/d3d12.c b/tests/d3d12.c
index 7fb0b4108023..c82778594129 100644
--- a/tests/d3d12.c
+++ b/tests/d3d12.c
@@ -21218,6 +21218,8 @@ static void test_suballocate_small_textures(void)
         check_alignment(info.SizeInBytes, info.Alignment);
     }

+    ok(info.Alignment >= D3D12_SMALL_RESOURCE_PLACEMENT_ALIGNMENT, "Got alignment %"PRIu64".\n", info.Alignment);
+
     heap_desc.SizeInBytes = ARRAY_SIZE(textures) * info.SizeInBytes;
     memset(&heap_desc.Properties, 0, sizeof(heap_desc.Properties));
     heap_desc.Properties.Type = D3D12_HEAP_TYPE_DEFAULT;