1 files changed, 83 insertions, 0 deletions
diff --git a/gfx/layers/d3d11/DiagnosticsD3D11.cpp b/gfx/layers/d3d11/DiagnosticsD3D11.cpp
new file mode 100644
index 0000000000..6d37280036
--- /dev/null
+++ b/gfx/layers/d3d11/DiagnosticsD3D11.cpp
@@ -0,0 +1,83 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "DiagnosticsD3D11.h"
+#include "mozilla/layers/Diagnostics.h"
+#include "mozilla/layers/HelpersD3D11.h"
+
+namespace mozilla {
+namespace layers {
+
+DiagnosticsD3D11::DiagnosticsD3D11(ID3D11Device* aDevice,
+                                   ID3D11DeviceContext* aContext)
+    : mDevice(aDevice), mContext(aContext) {}
+
+void DiagnosticsD3D11::Start(uint32_t aPixelsPerFrame) {
+  mPrevFrame = mCurrentFrame;
+  mCurrentFrame = FrameQueries();
+
+  CD3D11_QUERY_DESC desc(D3D11_QUERY_PIPELINE_STATISTICS);
+  mDevice->CreateQuery(&desc, getter_AddRefs(mCurrentFrame.stats));
+  if (mCurrentFrame.stats) {
+    mContext->Begin(mCurrentFrame.stats);
+  }
+  mCurrentFrame.pixelsPerFrame = aPixelsPerFrame;
+
+  desc = CD3D11_QUERY_DESC(D3D11_QUERY_TIMESTAMP_DISJOINT);
+  mDevice->CreateQuery(&desc, getter_AddRefs(mCurrentFrame.timing));
+  if (mCurrentFrame.timing) {
+    mContext->Begin(mCurrentFrame.timing);
+  }
+
+  desc = CD3D11_QUERY_DESC(D3D11_QUERY_TIMESTAMP);
+  mDevice->CreateQuery(&desc, getter_AddRefs(mCurrentFrame.frameBegin));
+  if (mCurrentFrame.frameBegin) {
+    mContext->End(mCurrentFrame.frameBegin);
+  }
+}
+
+void DiagnosticsD3D11::End() {
+  if (mCurrentFrame.stats) {
+    mContext->End(mCurrentFrame.stats);
+  }
+  if (mCurrentFrame.frameBegin) {
+    CD3D11_QUERY_DESC desc(D3D11_QUERY_TIMESTAMP);
+    mDevice->CreateQuery(&desc, getter_AddRefs(mCurrentFrame.frameEnd));
+    if (mCurrentFrame.frameEnd) {
+      mContext->End(mCurrentFrame.frameEnd);
+    }
+  }
+  if (mCurrentFrame.timing) {
+    mContext->End(mCurrentFrame.timing);
+  }
+}
+
+void DiagnosticsD3D11::Cancel() { mCurrentFrame = FrameQueries(); }
+
+void DiagnosticsD3D11::Query(GPUStats* aStats) {
+  // Collect pixel shader stats.
+  if (mPrevFrame.stats) {
+    D3D11_QUERY_DATA_PIPELINE_STATISTICS stats;
+    if (WaitForGPUQuery(mDevice, mContext, mPrevFrame.stats, &stats)) {
+      aStats->mInvalidPixels = mPrevFrame.pixelsPerFrame;
+      aStats->mPixelsFilled = uint32_t(stats.PSInvocations);
+    }
+  }
+  if (mPrevFrame.timing) {
+    UINT64 begin, end;
+    D3D11_QUERY_DATA_TIMESTAMP_DISJOINT timing;
+    if (WaitForGPUQuery(mDevice, mContext, mPrevFrame.timing, &timing) &&
+        !timing.Disjoint &&
+        WaitForGPUQuery(mDevice, mContext, mPrevFrame.frameBegin, &begin) &&
+        WaitForGPUQuery(mDevice, mContext, mPrevFrame.frameEnd, &end)) {
+      float timeMs = float(end - begin) / float(timing.Frequency) * 1000.0f;
+      aStats->mDrawTime = Some(timeMs);
+    }
+  }
+}
+
+}  // namespace layers
+}  // namespace mozilla