[PATCH vkd3d 08/11] vkd3d: Implement support for D3D12_FEATURE_D3D12_OPTIONS4.

[Conor McCarthy]

Signed-off-by: Conor McCarthy <conor.mccarthy.444 at gmail.com>
---
 include/vkd3d_d3d12.idl    | 14 +++++++++++
 libs/vkd3d/device.c        | 48 ++++++++++++++++++++++++++++++++++++++
 libs/vkd3d/vkd3d_private.h |  1 +
 3 files changed, 63 insertions(+)

diff --git a/include/vkd3d_d3d12.idl b/include/vkd3d_d3d12.idl
index 950b1fe..2f35402 100644
--- a/include/vkd3d_d3d12.idl
+++ b/include/vkd3d_d3d12.idl
@@ -210,6 +210,12 @@ typedef enum D3D12_VIEW_INSTANCING_TIER
     D3D12_VIEW_INSTANCING_TIER_3 = 0x3,
 }  D3D12_VIEW_INSTANCING_TIER;
 
+typedef enum D3D12_SHARED_RESOURCE_COMPATIBILITY_TIER
+{
+    D3D12_SHARED_RESOURCE_COMPATIBILITY_TIER_0 = 0x0,
+    D3D12_SHARED_RESOURCE_COMPATIBILITY_TIER_1 = 0x1,
+}  D3D12_SHARED_RESOURCE_COMPATIBILITY_TIER;
+
 interface ID3D12Fence;
 interface ID3D12RootSignature;
 interface ID3D12Heap;
@@ -1692,6 +1698,13 @@ typedef struct D3D12_FEATURE_DATA_EXISTING_HEAPS
     BOOL Supported;
 }  D3D12_FEATURE_DATA_EXISTING_HEAPS;
 
+typedef struct D3D12_FEATURE_DATA_D3D12_OPTIONS4
+{
+    BOOL MSAA64KBAlignedTextureSupported;
+    D3D12_SHARED_RESOURCE_COMPATIBILITY_TIER SharedResourceCompatibilityTier;
+    BOOL Native16BitShaderOpsSupported;
+}  D3D12_FEATURE_DATA_D3D12_OPTIONS4;
+
 typedef enum D3D12_FEATURE
 {
     D3D12_FEATURE_D3D12_OPTIONS = 0,
@@ -1710,6 +1723,7 @@ typedef enum D3D12_FEATURE
     D3D12_FEATURE_COMMAND_QUEUE_PRIORITY = 20,
     D3D12_FEATURE_D3D12_OPTIONS3 = 21,
     D3D12_FEATURE_EXISTING_HEAPS = 22,
+    D3D12_FEATURE_D3D12_OPTIONS4 = 23,
 } D3D12_FEATURE;
 
 typedef struct D3D12_MEMCPY_DEST
diff --git a/libs/vkd3d/device.c b/libs/vkd3d/device.c
index 5f1c696..9403505 100644
--- a/libs/vkd3d/device.c
+++ b/libs/vkd3d/device.c
@@ -1354,6 +1354,12 @@ static HRESULT vkd3d_init_device_caps(struct d3d12_device *device,
     device->feature_options3.ViewInstancingTier = D3D12_VIEW_INSTANCING_TIER_NOT_SUPPORTED;
     device->feature_options3.BarycentricsSupported = FALSE;
 
+    /* Alignment support can be tested later. */
+    device->feature_options4.MSAA64KBAlignedTextureSupported = FALSE;
+    device->feature_options4.SharedResourceCompatibilityTier = D3D12_SHARED_RESOURCE_COMPATIBILITY_TIER_0;
+    /* An SM 6.2 feature. This would require features->shaderInt16 and VK_KHR_shader_float16_int8. */
+    device->feature_options4.Native16BitShaderOpsSupported = FALSE;
+
     if ((vr = VK_CALL(vkEnumerateDeviceExtensionProperties(physical_device, NULL, &count, NULL))) < 0)
     {
         ERR("Failed to enumerate device extensions, vr %d.\n", vr);
@@ -2438,6 +2444,29 @@ bool d3d12_device_is_uma(struct d3d12_device *device, bool *coherent)
     return true;
 }
 
+/* The 4MB alignment requirement for MSAA was lowered to 64KB on hardware that supports it.
+ * This is distinct from the small MSAA requirement which applies to a total size of 4MB or less. */
+static bool d3d12_is_64k_msaa_supported(struct d3d12_device *device)
+{
+    D3D12_RESOURCE_ALLOCATION_INFO info;
+    D3D12_RESOURCE_DESC resource_desc;
+
+    memset(&resource_desc, 0, sizeof(resource_desc));
+    resource_desc.Dimension = D3D12_RESOURCE_DIMENSION_TEXTURE2D;
+    resource_desc.Width = 1024;
+    resource_desc.Height = 1025;
+    resource_desc.DepthOrArraySize = 1;
+    resource_desc.MipLevels = 1;
+    resource_desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+    resource_desc.SampleDesc.Count = 4;
+    resource_desc.Flags = D3D12_RESOURCE_FLAG_ALLOW_RENDER_TARGET;
+
+    /* FIXME: in some cases Vulkan requires 0x20000 or more for non-MSAA resources, which must have
+     * 0x10000 in their description, so we might resonably return true here for 0x20000 or 0x40000. */
+    return SUCCEEDED(vkd3d_get_image_allocation_info(device, &resource_desc, &info))
+            && info.Alignment <= 0x10000;
+}
+
 static HRESULT STDMETHODCALLTYPE d3d12_device_CheckFeatureSupport(ID3D12Device *iface,
         D3D12_FEATURE feature, void *feature_data, UINT feature_data_size)
 {
@@ -2855,6 +2884,25 @@ static HRESULT STDMETHODCALLTYPE d3d12_device_CheckFeatureSupport(ID3D12Device *
             return S_OK;
         }
 
+        case D3D12_FEATURE_D3D12_OPTIONS4:
+        {
+            D3D12_FEATURE_DATA_D3D12_OPTIONS4 *data = feature_data;
+
+            if (feature_data_size != sizeof(*data))
+            {
+                WARN("Invalid size %u.\n", feature_data_size);
+                return E_INVALIDARG;
+            }
+
+            *data = device->feature_options4;
+            data->MSAA64KBAlignedTextureSupported = d3d12_is_64k_msaa_supported(device);
+
+            TRACE("64KB aligned MSAA textures %#x.\n", data->MSAA64KBAlignedTextureSupported);
+            TRACE("Shared resource compatibility tier %#x.\n", data->SharedResourceCompatibilityTier);
+            TRACE("Native 16-bit shader ops %#x.\n", data->Native16BitShaderOpsSupported);
+            return S_OK;
+        }
+
         default:
             FIXME("Unhandled feature %#x.\n", feature);
             return E_NOTIMPL;
diff --git a/libs/vkd3d/vkd3d_private.h b/libs/vkd3d/vkd3d_private.h
index ef9a4f9..02644f9 100644
--- a/libs/vkd3d/vkd3d_private.h
+++ b/libs/vkd3d/vkd3d_private.h
@@ -1137,6 +1137,7 @@ struct d3d12_device
     D3D12_FEATURE_DATA_D3D12_OPTIONS1 feature_options1;
     D3D12_FEATURE_DATA_D3D12_OPTIONS2 feature_options2;
     D3D12_FEATURE_DATA_D3D12_OPTIONS3 feature_options3;
+    D3D12_FEATURE_DATA_D3D12_OPTIONS4 feature_options4;
 
     struct vkd3d_vulkan_info vk_info;
 
-- 
2.24.0