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#include "UnityPrefix.h"
#include "BufferedVBO.h"
BufferedVBO::BufferedVBO()
{
m_AllocatedSize = 0;
}
BufferedVBO::~BufferedVBO()
{
UnbufferVertexData();
}
void BufferedVBO::BufferAllVertexData( const VertexBufferData& buffer )
{
bool copyModes[kStreamModeCount];
std::fill(copyModes, copyModes + kStreamModeCount, true);
BufferVertexData(buffer, copyModes);
}
void BufferedVBO::BufferAccessibleVertexData( const VertexBufferData& buffer )
{
bool copyModes[kStreamModeCount];
std::fill(copyModes, copyModes + kStreamModeCount, true);
copyModes[kStreamModeNoAccess] = false;
BufferVertexData(buffer, copyModes);
}
void BufferedVBO::BufferVertexData( const VertexBufferData& buffer, bool copyModes[kStreamModeCount] )
{
std::copy(buffer.channels, buffer.channels + kShaderChannelCount, m_VertexData.channels);
int streamOffset = 0;
for (int s = 0; s < kMaxVertexStreams; s++)
{
StreamInfo& stream = m_VertexData.streams[s];
const StreamInfo& srcStream = buffer.streams[s];
UInt8 mode = m_StreamModes[s];
Assert(mode < kStreamModeCount);
if (copyModes[mode] && srcStream.channelMask)
{
stream = srcStream;
stream.offset = streamOffset;
streamOffset += CalculateVertexStreamSize(buffer, s);
streamOffset = VertexData::AlignStreamSize(streamOffset);
}
else
stream.Reset();
}
size_t allocSize = VertexData::GetAllocateDataSize(streamOffset);
if (allocSize != m_AllocatedSize)
{
UnbufferVertexData();
m_AllocatedSize = allocSize;
m_VertexData.buffer = (UInt8*)UNITY_MALLOC_ALIGNED (kMemVertexData, allocSize, VertexData::kVertexDataAlign);
}
m_VertexData.bufferSize = streamOffset;
m_VertexData.vertexCount = buffer.vertexCount;
for (int s = 0; s < kMaxVertexStreams; s++)
{
const StreamInfo& srcStream = buffer.streams[s];
UInt8 mode = m_StreamModes[s];
if (copyModes[mode] && srcStream.channelMask)
CopyVertexStream(buffer, GetStreamBuffer(s), s);
}
}
void BufferedVBO::UnbufferVertexData()
{
if (m_AllocatedSize > 0)
UNITY_FREE(kMemVertexData, m_VertexData.buffer);
m_AllocatedSize = 0;
m_VertexData.buffer = NULL;
}
bool BufferedVBO::MapVertexStream( VertexStreamData& outData, unsigned stream )
{
Assert(!m_IsStreamMapped[stream]);
DebugAssert(m_StreamModes[stream] != kStreamModeNoAccess);
if (m_StreamModes[stream] == kStreamModeNoAccess)
return false;
DebugAssert(m_VertexData.buffer);
if (!m_VertexData.buffer)
return false;
outData.buffer = m_VertexData.buffer + m_VertexData.streams[stream].offset;
outData.channelMask = m_VertexData.streams[stream].channelMask;
outData.stride = m_VertexData.streams[stream].stride;
outData.vertexCount = m_VertexData.vertexCount;
m_IsStreamMapped[stream] = true;
return true;
}
void BufferedVBO::UnmapVertexStream( unsigned stream )
{
Assert(m_IsStreamMapped[stream]);
m_IsStreamMapped[stream] = false;
}
int BufferedVBO::GetRuntimeMemorySize() const
{
return m_AllocatedSize;
}
UInt8* BufferedVBO::GetStreamBuffer(unsigned stream)
{
return m_VertexData.buffer + m_VertexData.streams[stream].offset;
}
UInt8* BufferedVBO::GetChannelDataAndStride(ShaderChannel channel, UInt32& outStride)
{
const ChannelInfo& info = m_VertexData.channels[channel];
if (info.IsValid())
{
outStride = info.CalcStride(m_VertexData.streams);
return m_VertexData.buffer + info.CalcOffset(m_VertexData.streams);
}
outStride = 0;
return NULL;
}
void BufferedVBO::GetChannelDataAndStrides(void* channelData[kShaderChannelCount], UInt32 outStrides[kShaderChannelCount])
{
for (int i = 0; i < kShaderChannelCount; i++)
channelData[i] = GetChannelDataAndStride(ShaderChannel(i), outStrides[i]);
}
void BufferedVBO::GetChannelOffsetsAndStrides(void* channelOffsets[kShaderChannelCount], UInt32 outStrides[kShaderChannelCount])
{
for (int i = 0; i < kShaderChannelCount; i++)
{
channelOffsets[i] = reinterpret_cast<void*>(m_VertexData.channels[i].CalcOffset(m_VertexData.streams));
outStrides[i] = m_VertexData.channels[i].CalcStride(m_VertexData.streams);
}
}
void BufferedVBO::UnloadSourceVertices()
{
UnbufferVertexData();
}
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