diff -r 000000000000 -r 6474c204b198 gfx/angle/src/libGLESv2/renderer/VertexBuffer9.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/angle/src/libGLESv2/renderer/VertexBuffer9.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,530 @@
+#include "precompiled.h"
+//
+// Copyright (c) 2002-2012 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.
+//
+
+// VertexBuffer9.cpp: Defines the D3D9 VertexBuffer implementation.
+
+#include "libGLESv2/renderer/VertexBuffer9.h"
+#include "libGLESv2/renderer/vertexconversion.h"
+#include "libGLESv2/renderer/BufferStorage.h"
+#include "libGLESv2/Context.h"
+#include "libGLESv2/renderer/Renderer9.h"
+
+#include "libGLESv2/Buffer.h"
+
+namespace rx
+{
+
+bool VertexBuffer9::mTranslationsInitialized = false;
+VertexBuffer9::FormatConverter VertexBuffer9::mFormatConverters[NUM_GL_VERTEX_ATTRIB_TYPES][2][4];
+
+VertexBuffer9::VertexBuffer9(rx::Renderer9 *const renderer) : mRenderer(renderer)
+{
+    mVertexBuffer = NULL;
+    mBufferSize = 0;
+    mDynamicUsage = false;
+
+    if (!mTranslationsInitialized)
+    {
+        initializeTranslations(renderer->getCapsDeclTypes());
+        mTranslationsInitialized = true;
+    }
+}
+
+VertexBuffer9::~VertexBuffer9()
+{
+    if (mVertexBuffer)
+    {
+        mVertexBuffer->Release();
+        mVertexBuffer = NULL;
+    }
+}
+
+bool VertexBuffer9::initialize(unsigned int size, bool dynamicUsage)
+{
+    if (mVertexBuffer)
+    {
+        mVertexBuffer->Release();
+        mVertexBuffer = NULL;
+    }
+
+    updateSerial();
+
+    if (size > 0)
+    {
+        DWORD flags = D3DUSAGE_WRITEONLY;
+        if (dynamicUsage)
+        {
+            flags |= D3DUSAGE_DYNAMIC;
+        }
+
+        HRESULT result = mRenderer->createVertexBuffer(size, flags, &mVertexBuffer);
+
+        if (FAILED(result))
+        {
+            ERR("Out of memory allocating a vertex buffer of size %lu.", size);
+            return false;
+        }
+    }
+
+    mBufferSize = size;
+    mDynamicUsage = dynamicUsage;
+    return true;
+}
+
+VertexBuffer9 *VertexBuffer9::makeVertexBuffer9(VertexBuffer *vertexBuffer)
+{
+    ASSERT(HAS_DYNAMIC_TYPE(VertexBuffer9*, vertexBuffer));
+    return static_cast<VertexBuffer9*>(vertexBuffer);
+}
+
+bool VertexBuffer9::storeVertexAttributes(const gl::VertexAttribute &attrib, GLint start, GLsizei count,
+                                             GLsizei instances, unsigned int offset)
+{
+    if (mVertexBuffer)
+    {
+        gl::Buffer *buffer = attrib.mBoundBuffer.get();
+
+        int inputStride = attrib.stride();
+        int elementSize = attrib.typeSize();
+        const FormatConverter &converter = formatConverter(attrib);
+
+        DWORD lockFlags = mDynamicUsage ? D3DLOCK_NOOVERWRITE : 0;
+
+        void *mapPtr = NULL;
+
+        unsigned int mapSize;
+        if (!spaceRequired(attrib, count, instances, &mapSize))
+        {
+            return false;
+        }
+
+        HRESULT result = mVertexBuffer->Lock(offset, mapSize, &mapPtr, lockFlags);
+
+        if (FAILED(result))
+        {
+            ERR("Lock failed with error 0x%08x", result);
+            return false;
+        }
+
+        const char *input = NULL;
+        if (buffer)
+        {
+            BufferStorage *storage = buffer->getStorage();
+            input = static_cast<const char*>(storage->getData()) + static_cast<int>(attrib.mOffset);
+        }
+        else
+        {
+            input = static_cast<const char*>(attrib.mPointer);
+        }
+
+        if (instances == 0 || attrib.mDivisor == 0)
+        {
+            input += inputStride * start;
+        }
+
+        if (converter.identity && inputStride == elementSize)
+        {
+            memcpy(mapPtr, input, count * inputStride);
+        }
+        else
+        {
+            converter.convertArray(input, inputStride, count, mapPtr);
+        }
+
+        mVertexBuffer->Unlock();
+
+        return true;
+    }
+    else
+    {
+        ERR("Vertex buffer not initialized.");
+        return false;
+    }
+}
+
+bool VertexBuffer9::storeRawData(const void* data, unsigned int size, unsigned int offset)
+{
+    if (mVertexBuffer)
+    {
+        DWORD lockFlags = mDynamicUsage ? D3DLOCK_NOOVERWRITE : 0;
+
+        void *mapPtr = NULL;
+        HRESULT result = mVertexBuffer->Lock(offset, size, &mapPtr, lockFlags);
+
+        if (FAILED(result))
+        {
+            ERR("Lock failed with error 0x%08x", result);
+            return false;
+        }
+
+        memcpy(mapPtr, data, size);
+
+        mVertexBuffer->Unlock();
+
+        return true;
+    }
+    else
+    {
+        ERR("Vertex buffer not initialized.");
+        return false;
+    }
+}
+
+bool VertexBuffer9::getSpaceRequired(const gl::VertexAttribute &attrib, GLsizei count, GLsizei instances,
+                                     unsigned int *outSpaceRequired) const
+{
+    return spaceRequired(attrib, count, instances, outSpaceRequired);
+}
+
+bool VertexBuffer9::requiresConversion(const gl::VertexAttribute &attrib) const
+{
+    return formatConverter(attrib).identity;
+}
+
+unsigned int VertexBuffer9::getVertexSize(const gl::VertexAttribute &attrib) const
+{
+    unsigned int spaceRequired;
+    return getSpaceRequired(attrib, 1, 0, &spaceRequired) ? spaceRequired : 0;
+}
+
+D3DDECLTYPE VertexBuffer9::getDeclType(const gl::VertexAttribute &attrib) const
+{
+    return formatConverter(attrib).d3dDeclType;
+}
+
+unsigned int VertexBuffer9::getBufferSize() const
+{
+    return mBufferSize;
+}
+
+bool VertexBuffer9::setBufferSize(unsigned int size)
+{
+    if (size > mBufferSize)
+    {
+        return initialize(size, mDynamicUsage);
+    }
+    else
+    {
+        return true;
+    }
+}
+
+bool VertexBuffer9::discard()
+{
+    if (mVertexBuffer)
+    {
+        void *dummy;
+        HRESULT result;
+
+        result = mVertexBuffer->Lock(0, 1, &dummy, D3DLOCK_DISCARD);
+        if (FAILED(result))
+        {
+            ERR("Discard lock failed with error 0x%08x", result);
+            return false;
+        }
+
+        result = mVertexBuffer->Unlock();
+        if (FAILED(result))
+        {
+            ERR("Discard unlock failed with error 0x%08x", result);
+            return false;
+        }
+
+        return true;
+    }
+    else
+    {
+        ERR("Vertex buffer not initialized.");
+        return false;
+    }
+}
+
+IDirect3DVertexBuffer9 * VertexBuffer9::getBuffer() const
+{
+    return mVertexBuffer;
+}
+
+// Mapping from OpenGL-ES vertex attrib type to D3D decl type:
+//
+// BYTE                 SHORT (Cast)
+// BYTE-norm            FLOAT (Normalize) (can't be exactly represented as SHORT-norm)
+// UNSIGNED_BYTE        UBYTE4 (Identity) or SHORT (Cast)
+// UNSIGNED_BYTE-norm   UBYTE4N (Identity) or FLOAT (Normalize)
+// SHORT                SHORT (Identity)
+// SHORT-norm           SHORT-norm (Identity) or FLOAT (Normalize)
+// UNSIGNED_SHORT       FLOAT (Cast)
+// UNSIGNED_SHORT-norm  USHORT-norm (Identity) or FLOAT (Normalize)
+// FIXED (not in WebGL) FLOAT (FixedToFloat)
+// FLOAT                FLOAT (Identity)
+
+// GLToCType maps from GL type (as GLenum) to the C typedef.
+template <GLenum GLType> struct GLToCType { };
+
+template <> struct GLToCType<GL_BYTE>           { typedef GLbyte type;      };
+template <> struct GLToCType<GL_UNSIGNED_BYTE>  { typedef GLubyte type;     };
+template <> struct GLToCType<GL_SHORT>          { typedef GLshort type;     };
+template <> struct GLToCType<GL_UNSIGNED_SHORT> { typedef GLushort type;    };
+template <> struct GLToCType<GL_FIXED>          { typedef GLuint type;      };
+template <> struct GLToCType<GL_FLOAT>          { typedef GLfloat type;     };
+
+// This differs from D3DDECLTYPE in that it is unsized. (Size expansion is applied last.)
+enum D3DVertexType
+{
+    D3DVT_FLOAT,
+    D3DVT_SHORT,
+    D3DVT_SHORT_NORM,
+    D3DVT_UBYTE,
+    D3DVT_UBYTE_NORM,
+    D3DVT_USHORT_NORM
+};
+
+// D3DToCType maps from D3D vertex type (as enum D3DVertexType) to the corresponding C type.
+template <unsigned int D3DType> struct D3DToCType { };
+
+template <> struct D3DToCType<D3DVT_FLOAT> { typedef float type; };
+template <> struct D3DToCType<D3DVT_SHORT> { typedef short type; };
+template <> struct D3DToCType<D3DVT_SHORT_NORM> { typedef short type; };
+template <> struct D3DToCType<D3DVT_UBYTE> { typedef unsigned char type; };
+template <> struct D3DToCType<D3DVT_UBYTE_NORM> { typedef unsigned char type; };
+template <> struct D3DToCType<D3DVT_USHORT_NORM> { typedef unsigned short type; };
+
+// Encode the type/size combinations that D3D permits. For each type/size it expands to a widener that will provide the appropriate final size.
+template <unsigned int type, int size> struct WidenRule { };
+
+template <int size> struct WidenRule<D3DVT_FLOAT, size>          : NoWiden<size> { };
+template <int size> struct WidenRule<D3DVT_SHORT, size>          : WidenToEven<size> { };
+template <int size> struct WidenRule<D3DVT_SHORT_NORM, size>     : WidenToEven<size> { };
+template <int size> struct WidenRule<D3DVT_UBYTE, size>          : WidenToFour<size> { };
+template <int size> struct WidenRule<D3DVT_UBYTE_NORM, size>     : WidenToFour<size> { };
+template <int size> struct WidenRule<D3DVT_USHORT_NORM, size>    : WidenToEven<size> { };
+
+// VertexTypeFlags encodes the D3DCAPS9::DeclType flag and vertex declaration flag for each D3D vertex type & size combination.
+template <unsigned int d3dtype, int size> struct VertexTypeFlags { };
+
+template <unsigned int _capflag, unsigned int _declflag>
+struct VertexTypeFlagsHelper
+{
+    enum { capflag = _capflag };
+    enum { declflag = _declflag };
+};
+
+template <> struct VertexTypeFlags<D3DVT_FLOAT, 1> : VertexTypeFlagsHelper<0, D3DDECLTYPE_FLOAT1> { };
+template <> struct VertexTypeFlags<D3DVT_FLOAT, 2> : VertexTypeFlagsHelper<0, D3DDECLTYPE_FLOAT2> { };
+template <> struct VertexTypeFlags<D3DVT_FLOAT, 3> : VertexTypeFlagsHelper<0, D3DDECLTYPE_FLOAT3> { };
+template <> struct VertexTypeFlags<D3DVT_FLOAT, 4> : VertexTypeFlagsHelper<0, D3DDECLTYPE_FLOAT4> { };
+template <> struct VertexTypeFlags<D3DVT_SHORT, 2> : VertexTypeFlagsHelper<0, D3DDECLTYPE_SHORT2> { };
+template <> struct VertexTypeFlags<D3DVT_SHORT, 4> : VertexTypeFlagsHelper<0, D3DDECLTYPE_SHORT4> { };
+template <> struct VertexTypeFlags<D3DVT_SHORT_NORM, 2> : VertexTypeFlagsHelper<D3DDTCAPS_SHORT2N, D3DDECLTYPE_SHORT2N> { };
+template <> struct VertexTypeFlags<D3DVT_SHORT_NORM, 4> : VertexTypeFlagsHelper<D3DDTCAPS_SHORT4N, D3DDECLTYPE_SHORT4N> { };
+template <> struct VertexTypeFlags<D3DVT_UBYTE, 4> : VertexTypeFlagsHelper<D3DDTCAPS_UBYTE4, D3DDECLTYPE_UBYTE4> { };
+template <> struct VertexTypeFlags<D3DVT_UBYTE_NORM, 4> : VertexTypeFlagsHelper<D3DDTCAPS_UBYTE4N, D3DDECLTYPE_UBYTE4N> { };
+template <> struct VertexTypeFlags<D3DVT_USHORT_NORM, 2> : VertexTypeFlagsHelper<D3DDTCAPS_USHORT2N, D3DDECLTYPE_USHORT2N> { };
+template <> struct VertexTypeFlags<D3DVT_USHORT_NORM, 4> : VertexTypeFlagsHelper<D3DDTCAPS_USHORT4N, D3DDECLTYPE_USHORT4N> { };
+
+
+// VertexTypeMapping maps GL type & normalized flag to preferred and fallback D3D vertex types (as D3DVertexType enums).
+template <GLenum GLtype, bool normalized> struct VertexTypeMapping { };
+
+template <D3DVertexType Preferred, D3DVertexType Fallback = Preferred>
+struct VertexTypeMappingBase
+{
+    enum { preferred = Preferred };
+    enum { fallback = Fallback };
+};
+
+template <> struct VertexTypeMapping<GL_BYTE, false>                        : VertexTypeMappingBase<D3DVT_SHORT> { };                       // Cast
+template <> struct VertexTypeMapping<GL_BYTE, true>                         : VertexTypeMappingBase<D3DVT_FLOAT> { };                       // Normalize
+template <> struct VertexTypeMapping<GL_UNSIGNED_BYTE, false>               : VertexTypeMappingBase<D3DVT_UBYTE, D3DVT_FLOAT> { };          // Identity, Cast
+template <> struct VertexTypeMapping<GL_UNSIGNED_BYTE, true>                : VertexTypeMappingBase<D3DVT_UBYTE_NORM, D3DVT_FLOAT> { };     // Identity, Normalize
+template <> struct VertexTypeMapping<GL_SHORT, false>                       : VertexTypeMappingBase<D3DVT_SHORT> { };                       // Identity
+template <> struct VertexTypeMapping<GL_SHORT, true>                        : VertexTypeMappingBase<D3DVT_SHORT_NORM, D3DVT_FLOAT> { };     // Cast, Normalize
+template <> struct VertexTypeMapping<GL_UNSIGNED_SHORT, false>              : VertexTypeMappingBase<D3DVT_FLOAT> { };                       // Cast
+template <> struct VertexTypeMapping<GL_UNSIGNED_SHORT, true>               : VertexTypeMappingBase<D3DVT_USHORT_NORM, D3DVT_FLOAT> { };    // Cast, Normalize
+template <bool normalized> struct VertexTypeMapping<GL_FIXED, normalized>   : VertexTypeMappingBase<D3DVT_FLOAT> { };                       // FixedToFloat
+template <bool normalized> struct VertexTypeMapping<GL_FLOAT, normalized>   : VertexTypeMappingBase<D3DVT_FLOAT> { };                       // Identity
+
+
+// Given a GL type & norm flag and a D3D type, ConversionRule provides the type conversion rule (Cast, Normalize, Identity, FixedToFloat).
+// The conversion rules themselves are defined in vertexconversion.h.
+
+// Almost all cases are covered by Cast (including those that are actually Identity since Cast<T,T> knows it's an identity mapping).
+template <GLenum fromType, bool normalized, unsigned int toType>
+struct ConversionRule : Cast<typename GLToCType<fromType>::type, typename D3DToCType<toType>::type> { };
+
+// All conversions from normalized types to float use the Normalize operator.
+template <GLenum fromType> struct ConversionRule<fromType, true, D3DVT_FLOAT> : Normalize<typename GLToCType<fromType>::type> { };
+
+// Use a full specialization for this so that it preferentially matches ahead of the generic normalize-to-float rules.
+template <> struct ConversionRule<GL_FIXED, true, D3DVT_FLOAT>  : FixedToFloat<GLint, 16> { };
+template <> struct ConversionRule<GL_FIXED, false, D3DVT_FLOAT> : FixedToFloat<GLint, 16> { };
+
+// A 2-stage construction is used for DefaultVertexValues because float must use SimpleDefaultValues (i.e. 0/1)
+// whether it is normalized or not.
+template <class T, bool normalized> struct DefaultVertexValuesStage2 { };
+
+template <class T> struct DefaultVertexValuesStage2<T, true>  : NormalizedDefaultValues<T> { };
+template <class T> struct DefaultVertexValuesStage2<T, false> : SimpleDefaultValues<T> { };
+
+// Work out the default value rule for a D3D type (expressed as the C type) and
+template <class T, bool normalized> struct DefaultVertexValues : DefaultVertexValuesStage2<T, normalized> { };
+template <bool normalized> struct DefaultVertexValues<float, normalized> : SimpleDefaultValues<float> { };
+
+// Policy rules for use with Converter, to choose whether to use the preferred or fallback conversion.
+// The fallback conversion produces an output that all D3D9 devices must support.
+template <class T> struct UsePreferred { enum { type = T::preferred }; };
+template <class T> struct UseFallback { enum { type = T::fallback }; };
+
+// Converter ties it all together. Given an OpenGL type/norm/size and choice of preferred/fallback conversion,
+// it provides all the members of the appropriate VertexDataConverter, the D3DCAPS9::DeclTypes flag in cap flag
+// and the D3DDECLTYPE member needed for the vertex declaration in declflag.
+template <GLenum fromType, bool normalized, int size, template <class T> class PreferenceRule>
+struct Converter
+    : VertexDataConverter<typename GLToCType<fromType>::type,
+                          WidenRule<PreferenceRule< VertexTypeMapping<fromType, normalized> >::type, size>,
+                          ConversionRule<fromType,
+                                         normalized,
+                                         PreferenceRule< VertexTypeMapping<fromType, normalized> >::type>,
+                          DefaultVertexValues<typename D3DToCType<PreferenceRule< VertexTypeMapping<fromType, normalized> >::type>::type, normalized > >
+{
+private:
+    enum { d3dtype = PreferenceRule< VertexTypeMapping<fromType, normalized> >::type };
+    enum { d3dsize = WidenRule<d3dtype, size>::finalWidth };
+
+public:
+    enum { capflag = VertexTypeFlags<d3dtype, d3dsize>::capflag };
+    enum { declflag = VertexTypeFlags<d3dtype, d3dsize>::declflag };
+};
+
+// Initialize a TranslationInfo
+#define TRANSLATION(type, norm, size, preferred)                                    \
+    {                                                                               \
+        Converter<type, norm, size, preferred>::identity,                           \
+        Converter<type, norm, size, preferred>::finalSize,                          \
+        Converter<type, norm, size, preferred>::convertArray,                       \
+        static_cast<D3DDECLTYPE>(Converter<type, norm, size, preferred>::declflag)  \
+    }
+
+#define TRANSLATION_FOR_TYPE_NORM_SIZE(type, norm, size)    \
+    {                                                       \
+        Converter<type, norm, size, UsePreferred>::capflag, \
+        TRANSLATION(type, norm, size, UsePreferred),        \
+        TRANSLATION(type, norm, size, UseFallback)          \
+    }
+
+#define TRANSLATIONS_FOR_TYPE(type)                                                                                                                                                                         \
+    {                                                                                                                                                                                                       \
+        { TRANSLATION_FOR_TYPE_NORM_SIZE(type, false, 1), TRANSLATION_FOR_TYPE_NORM_SIZE(type, false, 2), TRANSLATION_FOR_TYPE_NORM_SIZE(type, false, 3), TRANSLATION_FOR_TYPE_NORM_SIZE(type, false, 4) }, \
+        { TRANSLATION_FOR_TYPE_NORM_SIZE(type, true, 1), TRANSLATION_FOR_TYPE_NORM_SIZE(type, true, 2), TRANSLATION_FOR_TYPE_NORM_SIZE(type, true, 3), TRANSLATION_FOR_TYPE_NORM_SIZE(type, true, 4) },     \
+    }
+
+#define TRANSLATIONS_FOR_TYPE_NO_NORM(type)                                                                                                                                                                 \
+    {                                                                                                                                                                                                       \
+        { TRANSLATION_FOR_TYPE_NORM_SIZE(type, false, 1), TRANSLATION_FOR_TYPE_NORM_SIZE(type, false, 2), TRANSLATION_FOR_TYPE_NORM_SIZE(type, false, 3), TRANSLATION_FOR_TYPE_NORM_SIZE(type, false, 4) }, \
+        { TRANSLATION_FOR_TYPE_NORM_SIZE(type, false, 1), TRANSLATION_FOR_TYPE_NORM_SIZE(type, false, 2), TRANSLATION_FOR_TYPE_NORM_SIZE(type, false, 3), TRANSLATION_FOR_TYPE_NORM_SIZE(type, false, 4) }, \
+    }
+
+const VertexBuffer9::TranslationDescription VertexBuffer9::mPossibleTranslations[NUM_GL_VERTEX_ATTRIB_TYPES][2][4] = // [GL types as enumerated by typeIndex()][normalized][size-1]
+{
+    TRANSLATIONS_FOR_TYPE(GL_BYTE),
+    TRANSLATIONS_FOR_TYPE(GL_UNSIGNED_BYTE),
+    TRANSLATIONS_FOR_TYPE(GL_SHORT),
+    TRANSLATIONS_FOR_TYPE(GL_UNSIGNED_SHORT),
+    TRANSLATIONS_FOR_TYPE_NO_NORM(GL_FIXED),
+    TRANSLATIONS_FOR_TYPE_NO_NORM(GL_FLOAT)
+};
+
+void VertexBuffer9::initializeTranslations(DWORD declTypes)
+{
+    for (unsigned int i = 0; i < NUM_GL_VERTEX_ATTRIB_TYPES; i++)
+    {
+        for (unsigned int j = 0; j < 2; j++)
+        {
+            for (unsigned int k = 0; k < 4; k++)
+            {
+                if (mPossibleTranslations[i][j][k].capsFlag == 0 || (declTypes & mPossibleTranslations[i][j][k].capsFlag) != 0)
+                {
+                    mFormatConverters[i][j][k] = mPossibleTranslations[i][j][k].preferredConversion;
+                }
+                else
+                {
+                    mFormatConverters[i][j][k] = mPossibleTranslations[i][j][k].fallbackConversion;
+                }
+            }
+        }
+    }
+}
+
+unsigned int VertexBuffer9::typeIndex(GLenum type)
+{
+    switch (type)
+    {
+      case GL_BYTE: return 0;
+      case GL_UNSIGNED_BYTE: return 1;
+      case GL_SHORT: return 2;
+      case GL_UNSIGNED_SHORT: return 3;
+      case GL_FIXED: return 4;
+      case GL_FLOAT: return 5;
+
+      default: UNREACHABLE(); return 5;
+    }
+}
+
+const VertexBuffer9::FormatConverter &VertexBuffer9::formatConverter(const gl::VertexAttribute &attribute)
+{
+    return mFormatConverters[typeIndex(attribute.mType)][attribute.mNormalized][attribute.mSize - 1];
+}
+
+bool VertexBuffer9::spaceRequired(const gl::VertexAttribute &attrib, std::size_t count, GLsizei instances,
+                                  unsigned int *outSpaceRequired)
+{
+    unsigned int elementSize = formatConverter(attrib).outputElementSize;
+
+    if (instances == 0 || attrib.mDivisor == 0)
+    {
+        unsigned int elementCount = 0;
+        if (instances == 0 || attrib.mDivisor == 0)
+        {
+            elementCount = count;
+        }
+        else
+        {
+            if (static_cast<unsigned int>(instances) < std::numeric_limits<unsigned int>::max() - (attrib.mDivisor - 1))
+            {
+                // Round up
+                elementCount = (static_cast<unsigned int>(instances) + (attrib.mDivisor - 1)) / attrib.mDivisor;
+            }
+            else
+            {
+                elementCount = static_cast<unsigned int>(instances) / attrib.mDivisor;
+            }
+        }
+
+        if (elementSize <= std::numeric_limits<unsigned int>::max() / elementCount)
+        {
+            if (outSpaceRequired)
+            {
+                *outSpaceRequired = elementSize * elementCount;
+            }
+            return true;
+        }
+        else
+        {
+            return false;
+        }
+    }
+    else
+    {
+        const unsigned int elementSize = 4;
+        if (outSpaceRequired)
+        {
+            *outSpaceRequired = elementSize * 4;
+        }
+        return true;
+    }
+}
+
+}