1 files changed, 167 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/libANGLE/renderer/d3d/d3d11/VertexBuffer11.cpp b/gfx/angle/checkout/src/libANGLE/renderer/d3d/d3d11/VertexBuffer11.cpp
new file mode 100644
index 0000000000..9daa8f83f9
--- /dev/null
+++ b/gfx/angle/checkout/src/libANGLE/renderer/d3d/d3d11/VertexBuffer11.cpp
@@ -0,0 +1,167 @@
+//
+// Copyright 2013 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.
+//
+
+// VertexBuffer11.cpp: Defines the D3D11 VertexBuffer implementation.
+
+#include "libANGLE/renderer/d3d/d3d11/VertexBuffer11.h"
+
+#include "libANGLE/Buffer.h"
+#include "libANGLE/Context.h"
+#include "libANGLE/VertexAttribute.h"
+#include "libANGLE/formatutils.h"
+#include "libANGLE/renderer/d3d/d3d11/Buffer11.h"
+#include "libANGLE/renderer/d3d/d3d11/Context11.h"
+#include "libANGLE/renderer/d3d/d3d11/Renderer11.h"
+#include "libANGLE/renderer/d3d/d3d11/formatutils11.h"
+#include "libANGLE/renderer/d3d/d3d11/renderer11_utils.h"
+
+namespace rx
+{
+
+VertexBuffer11::VertexBuffer11(Renderer11 *const renderer)
+    : mRenderer(renderer),
+      mBuffer(),
+      mBufferSize(0),
+      mDynamicUsage(false),
+      mMappedResourceData(nullptr)
+{}
+
+VertexBuffer11::~VertexBuffer11()
+{
+    ASSERT(mMappedResourceData == nullptr);
+}
+
+angle::Result VertexBuffer11::initialize(const gl::Context *context,
+                                         unsigned int size,
+                                         bool dynamicUsage)
+{
+    mBuffer.reset();
+    updateSerial();
+
+    if (size > 0)
+    {
+        D3D11_BUFFER_DESC bufferDesc;
+        bufferDesc.ByteWidth           = size;
+        bufferDesc.Usage               = D3D11_USAGE_DYNAMIC;
+        bufferDesc.BindFlags           = D3D11_BIND_VERTEX_BUFFER;
+        bufferDesc.CPUAccessFlags      = D3D11_CPU_ACCESS_WRITE;
+        bufferDesc.MiscFlags           = 0;
+        bufferDesc.StructureByteStride = 0;
+
+        ANGLE_TRY(mRenderer->allocateResource(GetImplAs<Context11>(context), bufferDesc, &mBuffer));
+
+        if (dynamicUsage)
+        {
+            mBuffer.setInternalName("VertexBuffer11(dynamic)");
+        }
+        else
+        {
+            mBuffer.setInternalName("VertexBuffer11(static)");
+        }
+    }
+
+    mBufferSize   = size;
+    mDynamicUsage = dynamicUsage;
+
+    return angle::Result::Continue;
+}
+
+angle::Result VertexBuffer11::mapResource(const gl::Context *context)
+{
+    if (mMappedResourceData == nullptr)
+    {
+        D3D11_MAPPED_SUBRESOURCE mappedResource;
+
+        ANGLE_TRY(mRenderer->mapResource(context, mBuffer.get(), 0, D3D11_MAP_WRITE_NO_OVERWRITE, 0,
+                                         &mappedResource));
+
+        mMappedResourceData = static_cast<uint8_t *>(mappedResource.pData);
+    }
+
+    return angle::Result::Continue;
+}
+
+void VertexBuffer11::hintUnmapResource()
+{
+    if (mMappedResourceData != nullptr)
+    {
+        ID3D11DeviceContext *dxContext = mRenderer->getDeviceContext();
+        dxContext->Unmap(mBuffer.get(), 0);
+
+        mMappedResourceData = nullptr;
+    }
+}
+
+angle::Result VertexBuffer11::storeVertexAttributes(const gl::Context *context,
+                                                    const gl::VertexAttribute &attrib,
+                                                    const gl::VertexBinding &binding,
+                                                    gl::VertexAttribType currentValueType,
+                                                    GLint start,
+                                                    size_t count,
+                                                    GLsizei instances,
+                                                    unsigned int offset,
+                                                    const uint8_t *sourceData)
+{
+    ASSERT(mBuffer.valid());
+
+    int inputStride = static_cast<int>(ComputeVertexAttributeStride(attrib, binding));
+
+    // This will map the resource if it isn't already mapped.
+    ANGLE_TRY(mapResource(context));
+
+    uint8_t *output = mMappedResourceData + offset;
+
+    const uint8_t *input = sourceData;
+
+    if (instances == 0 || binding.getDivisor() == 0)
+    {
+        input += inputStride * start;
+    }
+
+    angle::FormatID vertexFormatID       = gl::GetVertexFormatID(attrib, currentValueType);
+    const D3D_FEATURE_LEVEL featureLevel = mRenderer->getRenderer11DeviceCaps().featureLevel;
+    const d3d11::VertexFormat &vertexFormatInfo =
+        d3d11::GetVertexFormatInfo(vertexFormatID, featureLevel);
+    ASSERT(vertexFormatInfo.copyFunction != nullptr);
+    vertexFormatInfo.copyFunction(input, inputStride, count, output);
+
+    return angle::Result::Continue;
+}
+
+unsigned int VertexBuffer11::getBufferSize() const
+{
+    return mBufferSize;
+}
+
+angle::Result VertexBuffer11::setBufferSize(const gl::Context *context, unsigned int size)
+{
+    if (size > mBufferSize)
+    {
+        return initialize(context, size, mDynamicUsage);
+    }
+
+    return angle::Result::Continue;
+}
+
+angle::Result VertexBuffer11::discard(const gl::Context *context)
+{
+    ASSERT(mBuffer.valid());
+
+    D3D11_MAPPED_SUBRESOURCE mappedResource;
+    ANGLE_TRY(mRenderer->mapResource(context, mBuffer.get(), 0, D3D11_MAP_WRITE_DISCARD, 0,
+                                     &mappedResource));
+
+    mRenderer->getDeviceContext()->Unmap(mBuffer.get(), 0);
+
+    return angle::Result::Continue;
+}
+
+const d3d11::Buffer &VertexBuffer11::getBuffer() const
+{
+    return mBuffer;
+}
+
+}  // namespace rx