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// Geometric Tools, LLC
// Copyright (c) 1998-2014
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
// http://www.geometrictools.com/License/Boost/LICENSE_1_0.txt
//
// File Version: 5.0.0 (2010/01/01)
#include "Wm5GraphicsPCH.h"
#include "Wm5VertexFormat.h"
#include "Wm5Renderer.h"
using namespace Wm5;
WM5_IMPLEMENT_RTTI(Wm5, Object, VertexFormat);
WM5_IMPLEMENT_STREAM(VertexFormat);
WM5_IMPLEMENT_FACTORY(VertexFormat);
WM5_IMPLEMENT_DEFAULT_NAMES(Object, VertexFormat);
int VertexFormat::msComponentSize[AT_QUANTITY] =
{
0, // AT_NONE
4, // AT_FLOAT1
4, // AT_FLOAT2
4, // AT_FLOAT3
4, // AT_FLOAT4
2, // AT_HALF1
2, // AT_HALF2
2, // AT_HALF3
2, // AT_HALF4
1, // AT_UBYTE4
2, // AT_SHORT1
2, // AT_SHORT2
2 // AT_SHORT4
};
int VertexFormat::msNumComponents[AT_QUANTITY] =
{
0, // AT_NONE
1, // AT_FLOAT1
2, // AT_FLOAT2
3, // AT_FLOAT3
4, // AT_FLOAT4
1, // AT_HALF1
2, // AT_HALF2
3, // AT_HALF3
4, // AT_HALF4
4, // AT_UBYTE4
1, // AT_SHORT1
2, // AT_SHORT2
4 // AT_SHORT4
};
int VertexFormat::msTypeSize[AT_QUANTITY] =
{
0, // AT_NONE
4, // AT_FLOAT1
8, // AT_FLOAT2
12, // AT_FLOAT3
16, // AT_FLOAT4
2, // AT_HALF1
4, // AT_HALF2
6, // AT_HALF3
8, // AT_HALF4
4, // AT_UBYTE4
2, // AT_SHORT1
4, // AT_SHORT2
8 // AT_SHORT4
};
//----------------------------------------------------------------------------
VertexFormat::VertexFormat (int numAttributes)
:
mNumAttributes(numAttributes),
mStride(0)
{
assertion(mNumAttributes > 0, "Number of attributes must be positive\n");
for (int i = 0; i < AM_MAX_ATTRIBUTES; ++i)
{
mElements[i].StreamIndex = 0;
mElements[i].Offset = 0;
mElements[i].Type = AT_NONE;
mElements[i].Usage = AU_NONE;
mElements[i].UsageIndex = 0;
}
}
//----------------------------------------------------------------------------
VertexFormat::~VertexFormat ()
{
Renderer::UnbindAll(this);
}
//----------------------------------------------------------------------------
VertexFormat* VertexFormat::Create (int numAttributes, ...)
{
VertexFormat* vformat = new0 VertexFormat(numAttributes);
va_list arguments;
va_start(arguments, numAttributes);
unsigned int offset = 0;
for (int i = 0; i < numAttributes; ++i)
{
int usage = va_arg(arguments, int);
int type = va_arg(arguments, int);
unsigned int usageIndex = va_arg(arguments, unsigned int);
vformat->SetAttribute(i, 0, offset, (AttributeType)type,
(AttributeUsage)usage, usageIndex);
offset += msTypeSize[type];
}
vformat->SetStride((int)offset);
va_end(arguments);
return vformat;
}
//----------------------------------------------------------------------------
void VertexFormat::SetAttribute (int attribute, unsigned int streamIndex,
unsigned int offset, AttributeType type, AttributeUsage usage,
unsigned int usageIndex)
{
assertion(0 <= attribute && attribute < mNumAttributes,
"Invalid index in SetAttribute\n");
#ifdef _DEBUG
if (attribute > 0)
{
assertion(offset > mElements[attribute-1].Offset,
"Offsets must be increasing with attribute index.\n");
}
else
{
assertion(offset == 0,
"The offset of the first attribute must be zero.\n");
}
#endif
Element& element = mElements[attribute];
element.StreamIndex = streamIndex;
element.Offset = offset;
element.Type = type;
element.Usage = usage;
element.UsageIndex = usageIndex;
}
//----------------------------------------------------------------------------
void VertexFormat::SetStride (int stride)
{
assertion(stride > 0, "Stride must be positive\n");
mStride = stride;
}
//----------------------------------------------------------------------------
void VertexFormat::GetAttribute (int attribute, unsigned int& streamIndex,
unsigned int& offset, AttributeType& type, AttributeUsage& usage,
unsigned int& usageIndex) const
{
assertion(0 <= attribute && attribute < mNumAttributes,
"Invalid index in GetAttribute\n");
const Element& element = mElements[attribute];
streamIndex = element.StreamIndex;
offset = element.Offset;
type = element.Type;
usage = element.Usage;
usageIndex = element.UsageIndex;
}
//----------------------------------------------------------------------------
int VertexFormat::GetIndex (AttributeUsage usage, unsigned int usageIndex)
const
{
for (int i = 0; i < mNumAttributes; ++i)
{
if (mElements[i].Usage == usage
&& mElements[i].UsageIndex == usageIndex)
{
return i;
}
}
return -1;
}
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
// Streaming support.
//----------------------------------------------------------------------------
VertexFormat::VertexFormat (LoadConstructor value)
:
Object(value),
mNumAttributes(0),
mStride(0)
{
for (int i = 0; i < AM_MAX_ATTRIBUTES; ++i)
{
mElements[i].StreamIndex = 0;
mElements[i].Offset = 0;
mElements[i].Type = AT_NONE;
mElements[i].Usage = AU_NONE;
mElements[i].UsageIndex = 0;
}
}
//----------------------------------------------------------------------------
void VertexFormat::Load (InStream& source)
{
WM5_BEGIN_DEBUG_STREAM_LOAD(source);
Object::Load(source);
source.Read(mNumAttributes);
for (int i = 0; i < AM_MAX_ATTRIBUTES; ++i)
{
source.Read(mElements[i].StreamIndex);
source.Read(mElements[i].Offset);
source.ReadEnum(mElements[i].Type);
source.ReadEnum(mElements[i].Usage);
source.Read(mElements[i].UsageIndex);
}
source.Read(mStride);
WM5_END_DEBUG_STREAM_LOAD(VertexFormat, source);
}
//----------------------------------------------------------------------------
void VertexFormat::Link (InStream& source)
{
Object::Link(source);
}
//----------------------------------------------------------------------------
void VertexFormat::PostLink ()
{
Object::PostLink();
}
//----------------------------------------------------------------------------
bool VertexFormat::Register (OutStream& target) const
{
return Object::Register(target);
}
//----------------------------------------------------------------------------
void VertexFormat::Save (OutStream& target) const
{
WM5_BEGIN_DEBUG_STREAM_SAVE(target);
Object::Save(target);
target.Write(mNumAttributes);
for (int i = 0; i < AM_MAX_ATTRIBUTES; ++i)
{
target.Write(mElements[i].StreamIndex);
target.Write(mElements[i].Offset);
target.WriteEnum(mElements[i].Type);
target.WriteEnum(mElements[i].Usage);
target.Write(mElements[i].UsageIndex);
}
target.Write(mStride);
WM5_END_DEBUG_STREAM_SAVE(VertexFormat, target);
}
//----------------------------------------------------------------------------
int VertexFormat::GetStreamingSize () const
{
int size = Object::GetStreamingSize();
size += sizeof(mNumAttributes);
for (int i = 0; i < AM_MAX_ATTRIBUTES; ++i)
{
size += sizeof(mElements[i].StreamIndex);
size += sizeof(mElements[i].Offset);
size += WM5_ENUMSIZE(mElements[i].Type);
size += WM5_ENUMSIZE(mElements[i].Usage);
size += sizeof(mElements[i].UsageIndex);
}
size += sizeof(mStride);
return size;
}
//----------------------------------------------------------------------------
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