1 files changed, 131 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/libANGLE/renderer/d3d/d3d11/TransformFeedback11.cpp b/gfx/angle/checkout/src/libANGLE/renderer/d3d/d3d11/TransformFeedback11.cpp
new file mode 100644
index 0000000000..1dcd62cd45
--- /dev/null
+++ b/gfx/angle/checkout/src/libANGLE/renderer/d3d/d3d11/TransformFeedback11.cpp
@@ -0,0 +1,131 @@
+//
+// Copyright 2014 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// TransformFeedbackD3D.cpp is a no-op implementation for both the D3D9 and D3D11 renderers.
+
+#include "libANGLE/renderer/d3d/d3d11/TransformFeedback11.h"
+
+#include "libANGLE/Buffer.h"
+#include "libANGLE/renderer/d3d/d3d11/Buffer11.h"
+#include "libANGLE/renderer/d3d/d3d11/Renderer11.h"
+
+namespace rx
+{
+
+TransformFeedback11::TransformFeedback11(const gl::TransformFeedbackState &state,
+                                         Renderer11 *renderer)
+    : TransformFeedbackImpl(state),
+      mRenderer(renderer),
+      mIsDirty(true),
+      mBuffers(state.getIndexedBuffers().size(), nullptr),
+      mBufferOffsets(state.getIndexedBuffers().size(), 0),
+      mSerial(mRenderer->generateSerial())
+{}
+
+TransformFeedback11::~TransformFeedback11() {}
+
+angle::Result TransformFeedback11::begin(const gl::Context *context,
+                                         gl::PrimitiveMode primitiveMode)
+{
+    // Reset all the cached offsets to the binding offsets
+    mIsDirty = true;
+    for (size_t bindingIdx = 0; bindingIdx < mBuffers.size(); bindingIdx++)
+    {
+        const auto &binding = mState.getIndexedBuffer(bindingIdx);
+        if (binding.get() != nullptr)
+        {
+            mBufferOffsets[bindingIdx] = static_cast<UINT>(binding.getOffset());
+        }
+        else
+        {
+            mBufferOffsets[bindingIdx] = 0;
+        }
+    }
+    mRenderer->getStateManager()->invalidateTransformFeedback();
+    return angle::Result::Continue;
+}
+
+angle::Result TransformFeedback11::end(const gl::Context *context)
+{
+    mRenderer->getStateManager()->invalidateTransformFeedback();
+    if (mRenderer->getFeatures().flushAfterEndingTransformFeedback.enabled)
+    {
+        mRenderer->getDeviceContext()->Flush();
+    }
+    return angle::Result::Continue;
+}
+
+angle::Result TransformFeedback11::pause(const gl::Context *context)
+{
+    mRenderer->getStateManager()->invalidateTransformFeedback();
+    return angle::Result::Continue;
+}
+
+angle::Result TransformFeedback11::resume(const gl::Context *context)
+{
+    mRenderer->getStateManager()->invalidateTransformFeedback();
+    return angle::Result::Continue;
+}
+
+angle::Result TransformFeedback11::bindIndexedBuffer(
+    const gl::Context *context,
+    size_t index,
+    const gl::OffsetBindingPointer<gl::Buffer> &binding)
+{
+    mIsDirty              = true;
+    mBufferOffsets[index] = static_cast<UINT>(binding.getOffset());
+    mRenderer->getStateManager()->invalidateTransformFeedback();
+    return angle::Result::Continue;
+}
+
+void TransformFeedback11::onApply()
+{
+    mIsDirty = false;
+
+    // Change all buffer offsets to -1 so that if any of them need to be re-applied, the are set to
+    // append
+    std::fill(mBufferOffsets.begin(), mBufferOffsets.end(), -1);
+}
+
+bool TransformFeedback11::isDirty() const
+{
+    return mIsDirty;
+}
+
+UINT TransformFeedback11::getNumSOBuffers() const
+{
+    return static_cast<UINT>(mBuffers.size());
+}
+
+angle::Result TransformFeedback11::getSOBuffers(const gl::Context *context,
+                                                const std::vector<ID3D11Buffer *> **buffersOut)
+{
+    for (size_t bindingIdx = 0; bindingIdx < mBuffers.size(); bindingIdx++)
+    {
+        const auto &binding = mState.getIndexedBuffer(bindingIdx);
+        if (binding.get() != nullptr)
+        {
+            Buffer11 *storage = GetImplAs<Buffer11>(binding.get());
+            ANGLE_TRY(storage->getBuffer(context, BUFFER_USAGE_VERTEX_OR_TRANSFORM_FEEDBACK,
+                                         &mBuffers[bindingIdx]));
+        }
+    }
+
+    *buffersOut = &mBuffers;
+    return angle::Result::Continue;
+}
+
+const std::vector<UINT> &TransformFeedback11::getSOBufferOffsets() const
+{
+    return mBufferOffsets;
+}
+
+Serial TransformFeedback11::getSerial() const
+{
+    return mSerial;
+}
+
+}  // namespace rx