1 files changed, 191 insertions, 0 deletions
diff --git a/gfx/angle/src/libANGLE/renderer/d3d/d3d11/VertexBuffer11.cpp b/gfx/angle/src/libANGLE/renderer/d3d/d3d11/VertexBuffer11.cpp
new file mode 100755
index 000000000..6cd91bd35
--- /dev/null
+++ b/gfx/angle/src/libANGLE/renderer/d3d/d3d11/VertexBuffer11.cpp
@@ -0,0 +1,191 @@
+//
+// Copyright (c) 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/VertexAttribute.h"
+#include "libANGLE/formatutils.h"
+#include "libANGLE/renderer/d3d/d3d11/Buffer11.h"
+#include "libANGLE/renderer/d3d/d3d11/formatutils11.h"
+#include "libANGLE/renderer/d3d/d3d11/Renderer11.h"
+#include "libANGLE/renderer/d3d/d3d11/renderer11_utils.h"
+
+namespace rx
+{
+
+VertexBuffer11::VertexBuffer11(Renderer11 *const renderer) : mRenderer(renderer)
+{
+    mBuffer             = NULL;
+    mBufferSize         = 0;
+    mDynamicUsage       = false;
+    mMappedResourceData = NULL;
+}
+
+VertexBuffer11::~VertexBuffer11()
+{
+    ASSERT(mMappedResourceData == NULL);
+    SafeRelease(mBuffer);
+}
+
+gl::Error VertexBuffer11::initialize(unsigned int size, bool dynamicUsage)
+{
+    SafeRelease(mBuffer);
+
+    updateSerial();
+
+    if (size > 0)
+    {
+        ID3D11Device *dxDevice = mRenderer->getDevice();
+
+        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;
+
+        HRESULT result = dxDevice->CreateBuffer(&bufferDesc, NULL, &mBuffer);
+        if (FAILED(result))
+        {
+            return gl::Error(GL_OUT_OF_MEMORY,
+                             "Failed to allocate internal vertex buffer of size, %lu.", size);
+        }
+
+        if (dynamicUsage)
+        {
+            d3d11::SetDebugName(mBuffer, "VertexBuffer11 (dynamic)");
+        }
+        else
+        {
+            d3d11::SetDebugName(mBuffer, "VertexBuffer11 (static)");
+        }
+    }
+
+    mBufferSize   = size;
+    mDynamicUsage = dynamicUsage;
+
+    return gl::Error(GL_NO_ERROR);
+}
+
+gl::Error VertexBuffer11::mapResource()
+{
+    if (mMappedResourceData == NULL)
+    {
+        ID3D11DeviceContext *dxContext = mRenderer->getDeviceContext();
+
+        D3D11_MAPPED_SUBRESOURCE mappedResource;
+
+        HRESULT result =
+            dxContext->Map(mBuffer, 0, D3D11_MAP_WRITE_NO_OVERWRITE, 0, &mappedResource);
+        if (FAILED(result))
+        {
+            return gl::Error(GL_OUT_OF_MEMORY,
+                             "Failed to map internal vertex buffer, HRESULT: 0x%08x.", result);
+        }
+
+        mMappedResourceData = reinterpret_cast<uint8_t *>(mappedResource.pData);
+    }
+
+    return gl::Error(GL_NO_ERROR);
+}
+
+void VertexBuffer11::hintUnmapResource()
+{
+    if (mMappedResourceData != NULL)
+    {
+        ID3D11DeviceContext *dxContext = mRenderer->getDeviceContext();
+        dxContext->Unmap(mBuffer, 0);
+
+        mMappedResourceData = NULL;
+    }
+}
+
+gl::Error VertexBuffer11::storeVertexAttributes(const gl::VertexAttribute &attrib,
+                                                GLenum currentValueType,
+                                                GLint start,
+                                                GLsizei count,
+                                                GLsizei instances,
+                                                unsigned int offset,
+                                                const uint8_t *sourceData)
+{
+    if (!mBuffer)
+    {
+        return gl::Error(GL_OUT_OF_MEMORY, "Internal vertex buffer is not initialized.");
+    }
+
+    int inputStride = static_cast<int>(ComputeVertexAttributeStride(attrib));
+
+    // This will map the resource if it isn't already mapped.
+    ANGLE_TRY(mapResource());
+
+    uint8_t *output = mMappedResourceData + offset;
+
+    const uint8_t *input = sourceData;
+
+    if (instances == 0 || attrib.divisor == 0)
+    {
+        input += inputStride * start;
+    }
+
+    gl::VertexFormatType vertexFormatType = gl::GetVertexFormatType(attrib, currentValueType);
+    const D3D_FEATURE_LEVEL featureLevel  = mRenderer->getRenderer11DeviceCaps().featureLevel;
+    const d3d11::VertexFormat &vertexFormatInfo =
+        d3d11::GetVertexFormatInfo(vertexFormatType, featureLevel);
+    ASSERT(vertexFormatInfo.copyFunction != NULL);
+    vertexFormatInfo.copyFunction(input, inputStride, count, output);
+
+    return gl::NoError();
+}
+
+unsigned int VertexBuffer11::getBufferSize() const
+{
+    return mBufferSize;
+}
+
+gl::Error VertexBuffer11::setBufferSize(unsigned int size)
+{
+    if (size > mBufferSize)
+    {
+        return initialize(size, mDynamicUsage);
+    }
+    else
+    {
+        return gl::Error(GL_NO_ERROR);
+    }
+}
+
+gl::Error VertexBuffer11::discard()
+{
+    if (!mBuffer)
+    {
+        return gl::Error(GL_OUT_OF_MEMORY, "Internal vertex buffer is not initialized.");
+    }
+
+    ID3D11DeviceContext *dxContext = mRenderer->getDeviceContext();
+
+    D3D11_MAPPED_SUBRESOURCE mappedResource;
+    HRESULT result = dxContext->Map(mBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource);
+    if (FAILED(result))
+    {
+        return gl::Error(GL_OUT_OF_MEMORY,
+                         "Failed to map internal buffer for discarding, HRESULT: 0x%08x", result);
+    }
+
+    dxContext->Unmap(mBuffer, 0);
+
+    return gl::Error(GL_NO_ERROR);
+}
+
+ID3D11Buffer *VertexBuffer11::getBuffer() const
+{
+    return mBuffer;
+}
+
+}  // namespace rx