Disable the workaround about the T2T copy issue on newer Intel drivers

This patch disables the workaround about the T2T copy issue (the Toggle
UseTempBufferInSmallFormatTextureToTextureCopyFromGreaterToLessMipLevel)
on the latest Intel Gen9 and Gen9.5 D3D driver (27.20.100.9466) which
contains the fix for this issue.

This patch also implements the D3D driver version comparison algorithm
for Intel drivers.

BUG=chromium:1161355
TEST=dawn_end2end_tests

Change-Id: I406598f2c5745214a60bfc43fb732d45360aa1fe
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/51343
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>

src/common/GPUInfo.cpp

@@ -14,6 +14,8 @@
 
 #include "common/GPUInfo.h"
 
+#include "common/Assert.h"
+
 #include <algorithm>
 #include <array>
 
@@ -38,6 +40,13 @@ namespace gpu_info {
         const std::array<uint32_t, 21> Cometlake = {
             {0x9B21, 0x9BA0, 0x9BA2, 0x9BA4, 0x9BA5, 0x9BA8, 0x9BAA, 0x9BAB, 0x9BAC, 0x9B41, 0x9BC0,
              0x9BC2, 0x9BC4, 0x9BC5, 0x9BC6, 0x9BC8, 0x9BCA, 0x9BCB, 0x9BCC, 0x9BE6, 0x9BF6}};
+
+        bool IsOldIntelD3DVersionScheme(const D3DDriverVersion& driverVersion) {
+            // See https://www.intel.com/content/www/us/en/support/articles/000005654/graphics.html
+            // for more details
+            return driverVersion[2] < 100u;
+        }
+
     }  // anonymous namespace
 
     bool IsAMD(PCIVendorID vendorId) {
@@ -65,6 +74,32 @@ namespace gpu_info {
         return vendorId == kVendorID_Microsoft && deviceId == kDeviceID_WARP;
     }
 
+    int CompareD3DDriverVersion(PCIVendorID vendorId,
+                                const D3DDriverVersion& version1,
+                                const D3DDriverVersion& version2) {
+        if (IsIntel(vendorId)) {
+            // The Intel graphics driver version schema has had a change since the Windows 10 April
+            // 2018 Update release. In the new schema the 3rd number of the driver version is always
+            // 100, while on the older drivers it is always less than 100. For the drivers using the
+            // same driver version schema, the newer driver always has the bigger 4th number.
+            // See https://www.intel.com/content/www/us/en/support/articles/000005654/graphics.html
+            // for more details.
+            bool isOldIntelDriver1 = IsOldIntelD3DVersionScheme(version1);
+            bool isOldIntelDriver2 = IsOldIntelD3DVersionScheme(version2);
+            if (isOldIntelDriver1 && !isOldIntelDriver2) {
+                return -1;
+            } else if (!isOldIntelDriver1 && isOldIntelDriver2) {
+                return 1;
+            } else {
+                return static_cast<int32_t>(version1[3]) - static_cast<int32_t>(version2[3]);
+            }
+        }
+
+        // TODO(jiawei.shao@intel.com): support other GPU vendors
+        UNREACHABLE();
+        return 0;
+    }
+
     // Intel GPUs
     bool IsSkylake(PCIDeviceID deviceId) {
         return std::find(Skylake.cbegin(), Skylake.cend(), deviceId) != Skylake.cend();

src/common/GPUInfo.h

@@ -15,6 +15,7 @@
 #ifndef COMMON_GPUINFO_H
 #define COMMON_GPUINFO_H
 
+#include <array>
 #include <cstdint>
 
 using PCIVendorID = uint32_t;
@@ -43,6 +44,17 @@ namespace gpu_info {
     bool IsSwiftshader(PCIVendorID vendorId, PCIDeviceID deviceId);
     bool IsWARP(PCIVendorID vendorId, PCIDeviceID deviceId);
 
+    using D3DDriverVersion = std::array<uint16_t, 4>;
+
+    // Do comparison between two driver versions. Currently we only support the comparison between
+    // Intel D3D driver versions.
+    // - Return a negative value if version1 is older
+    // - Return a positive value if version1 is newer
+    // - Return 0 if version1 and version2 represent same driver version
+    int CompareD3DDriverVersion(PCIVendorID vendorId,
+                                const D3DDriverVersion& version1,
+                                const D3DDriverVersion& version2);
+
     // Intel architectures
     bool IsSkylake(PCIDeviceID deviceId);
     bool IsKabylake(PCIDeviceID deviceId);

src/dawn_native/d3d12/AdapterD3D12.cpp

@@ -52,6 +52,10 @@ namespace dawn_native { namespace d3d12 {
         return mD3d12Device;
     }
 
+    const gpu_info::D3DDriverVersion& Adapter::GetDriverVersion() const {
+        return mDriverVersion;
+    }
+
     MaybeError Adapter::Initialize() {
         // D3D12 cannot check for feature support without a device.
         // Create the device to populate the adapter properties then reuse it when needed for actual
@@ -88,10 +92,10 @@ namespace dawn_native { namespace d3d12 {
 
             std::ostringstream o;
             o << "D3D12 driver version ";
-            o << ((encodedVersion >> 48) & 0xFFFF) << ".";
-            o << ((encodedVersion >> 32) & 0xFFFF) << ".";
-            o << ((encodedVersion >> 16) & 0xFFFF) << ".";
-            o << (encodedVersion & 0xFFFF);
+            for (size_t i = 0; i < mDriverVersion.size(); ++i) {
+                mDriverVersion[i] = (encodedVersion >> (48 - 16 * i)) & 0xFFFF;
+                o << mDriverVersion[i] << ".";
+            }
             mDriverDescription = o.str();
         }
 

src/dawn_native/d3d12/AdapterD3D12.h

@@ -17,6 +17,7 @@
 
 #include "dawn_native/Adapter.h"
 
+#include "common/GPUInfo.h"
 #include "dawn_native/d3d12/D3D12Info.h"
 #include "dawn_native/d3d12/d3d12_platform.h"
 
@@ -33,6 +34,7 @@ namespace dawn_native { namespace d3d12 {
         IDXGIAdapter3* GetHardwareAdapter() const;
         Backend* GetBackend() const;
         ComPtr<ID3D12Device> GetDevice() const;
+        const gpu_info::D3DDriverVersion& GetDriverVersion() const;
 
         MaybeError Initialize();
 
@@ -46,6 +48,7 @@ namespace dawn_native { namespace d3d12 {
 
         ComPtr<IDXGIAdapter3> mHardwareAdapter;
         ComPtr<ID3D12Device> mD3d12Device;
+        gpu_info::D3DDriverVersion mDriverVersion;
 
         Backend* mBackend;
         D3D12DeviceInfo mDeviceInfo = {};

src/dawn_native/d3d12/DeviceD3D12.cpp

@@ -548,14 +548,17 @@ namespace dawn_native { namespace d3d12 {
 
         // Currently this workaround is only needed on Intel Gen9 and Gen9.5 GPUs.
         // See http://crbug.com/1161355 for more information.
-        // TODO(jiawei.shao@intel.com): disable this workaround on the newer drivers when the driver
-        // bug is fixed.
         if (gpu_info::IsIntel(pciInfo.vendorId) &&
             (gpu_info::IsSkylake(pciInfo.deviceId) || gpu_info::IsKabylake(pciInfo.deviceId) ||
              gpu_info::IsCoffeelake(pciInfo.deviceId))) {
-            SetToggle(
-                Toggle::UseTempBufferInSmallFormatTextureToTextureCopyFromGreaterToLessMipLevel,
-                true);
+            constexpr gpu_info::D3DDriverVersion kFirstDriverVersionWithFix = {27, 20, 100, 9466};
+            if (gpu_info::CompareD3DDriverVersion(pciInfo.vendorId,
+                                                  ToBackend(GetAdapter())->GetDriverVersion(),
+                                                  kFirstDriverVersionWithFix) < 0) {
+                SetToggle(
+                    Toggle::UseTempBufferInSmallFormatTextureToTextureCopyFromGreaterToLessMipLevel,
+                    true);
+            }
         }
     }