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#include "drape/batcher.hpp"
#include "drape/cpu_buffer.hpp"
#include "drape/batcher_helpers.hpp"
#include "drape/vertex_array_buffer.hpp"
#include "base/assert.hpp"
#include "std/bind.hpp"
namespace dp
{
class Batcher::CallbacksWrapper
{
public:
CallbacksWrapper(GLState const & state, RefPointer<OverlayHandle> overlay)
: m_state(state)
, m_overlay(overlay)
{
}
void SetVAO(RefPointer<VertexArrayBuffer> buffer)
{
m_buffer = buffer;
}
bool IsVAOFilled() const
{
return m_buffer->IsFilled();
}
void FlushData(BindingInfo const & info, void const * data, uint16_t count)
{
if (!m_overlay.IsNull() && info.IsDynamic())
{
uint16_t offset = m_buffer->GetDynamicBufferOffset(info);
m_overlay->AddDynamicAttribute(info, offset, count);
}
m_buffer->UploadData(info, data, count);
}
uint16_t * GetIndexStorage(uint16_t size, uint16_t & startIndex)
{
startIndex = m_buffer->GetStartIndexValue();
if (m_overlay.IsNull())
{
m_indexStorage.resize(size);
return &m_indexStorage[0];
}
else
return m_overlay->IndexStorage(size);
}
void SubmitIndexes()
{
if (m_overlay.IsNull())
m_buffer->UploadIndexes(&m_indexStorage[0], m_indexStorage.size());
}
uint16_t GetAvailableVertexCount() const
{
return m_buffer->GetAvailableVertexCount();
}
uint16_t GetAvailableIndexCount() const
{
return m_buffer->GetAvailableIndexCount();
}
GLState const & GetState() const
{
return m_state;
}
private:
GLState const & m_state;
RefPointer<VertexArrayBuffer> m_buffer;
RefPointer<OverlayHandle> m_overlay;
vector<uint16_t> m_indexStorage;
};
////////////////////////////////////////////////////////////////
Batcher::Batcher(uint32_t indexBufferSize, uint32_t vertexBufferSize)
: m_indexBufferSize(indexBufferSize)
, m_vertexBufferSize(vertexBufferSize)
{
}
Batcher::~Batcher()
{
buckets_t::iterator it = m_buckets.begin();
for (; it != m_buckets.end(); ++it)
it->second.Destroy();
}
void Batcher::InsertTriangleList(GLState const & state, RefPointer<AttributeProvider> params)
{
InsertTriangleList(state, params, MovePointer<OverlayHandle>(NULL));
}
void Batcher::InsertTriangleList(GLState const & state, RefPointer<AttributeProvider> params,
TransferPointer<OverlayHandle> handle)
{
InsertTriangles<TriangleListBatch>(state, params, handle);
}
void Batcher::InsertTriangleStrip(GLState const & state, RefPointer<AttributeProvider> params)
{
InsertTriangleStrip(state, params, MovePointer<OverlayHandle>(NULL));
}
void Batcher::InsertTriangleStrip(GLState const & state, RefPointer<AttributeProvider> params,
TransferPointer<OverlayHandle> handle)
{
InsertTriangles<TriangleStripBatch>(state, params, handle);
}
void Batcher::InsertTriangleFan(GLState const & state, RefPointer<AttributeProvider> params)
{
InsertTriangleFan(state, params, MovePointer<OverlayHandle>(NULL));
}
void Batcher::InsertTriangleFan(GLState const & state, RefPointer<AttributeProvider> params,
TransferPointer<OverlayHandle> handle)
{
InsertTriangles<TriangleFanBatch>(state, params, handle);
}
void Batcher::InsertListOfStrip(GLState const & state, RefPointer<AttributeProvider> params, uint8_t vertexStride)
{
InsertListOfStrip(state, params, MovePointer<OverlayHandle>(NULL), vertexStride);
}
void Batcher::InsertListOfStrip(GLState const & state, RefPointer<AttributeProvider> params,
TransferPointer<OverlayHandle> handle, uint8_t vertexStride)
{
InsertTriangles<TriangleListOfStripBatch>(state, params, handle, vertexStride);
}
void Batcher::StartSession(flush_fn const & flusher)
{
m_flushInterface = flusher;
}
void Batcher::EndSession()
{
Flush();
m_flushInterface = flush_fn();
}
void Batcher::ChangeBuffer(RefPointer<CallbacksWrapper> wrapper, bool checkFilledBuffer)
{
if (wrapper->IsVAOFilled() || checkFilledBuffer == false)
{
GLState const & state = wrapper->GetState();
FinalizeBucket(state);
RefPointer<RenderBucket> bucket = GetBucket(state);
wrapper->SetVAO(bucket->GetBuffer());
}
}
RefPointer<RenderBucket> Batcher::GetBucket(GLState const & state)
{
buckets_t::iterator it = m_buckets.find(state);
if (it != m_buckets.end())
return it->second.GetRefPointer();
MasterPointer<VertexArrayBuffer> vao(new VertexArrayBuffer(m_indexBufferSize, m_vertexBufferSize));
MasterPointer<RenderBucket> buffer(new RenderBucket(vao.Move()));
m_buckets.insert(make_pair(state, buffer));
return buffer.GetRefPointer();
}
void Batcher::FinalizeBucket(GLState const & state)
{
ASSERT(m_buckets.find(state) != m_buckets.end(), ("Have no bucket for finalize with given state"));
MasterPointer<RenderBucket> bucket = m_buckets[state];
m_buckets.erase(state);
bucket->GetBuffer()->Preflush();
m_flushInterface(state, bucket.Move());
}
void Batcher::Flush()
{
ASSERT(m_flushInterface != NULL, ());
for (buckets_t::iterator it = m_buckets.begin(); it != m_buckets.end(); ++it)
{
it->second->GetBuffer()->Preflush();
m_flushInterface(it->first, it->second.Move());
}
m_buckets.clear();
}
template <typename TBatcher>
void Batcher::InsertTriangles(GLState const & state,
RefPointer<AttributeProvider> params,
TransferPointer<OverlayHandle> transferHandle,
uint8_t vertexStride)
{
RefPointer<RenderBucket> bucket = GetBucket(state);
RefPointer<VertexArrayBuffer> vao = bucket->GetBuffer();
MasterPointer<OverlayHandle> handle(transferHandle);
{
Batcher::CallbacksWrapper wrapper(state, handle.GetRefPointer());
wrapper.SetVAO(vao);
BatchCallbacks callbacks;
callbacks.m_flushVertex = bind(&CallbacksWrapper::FlushData, &wrapper, _1, _2, _3);
callbacks.m_getIndexStorage = bind(&CallbacksWrapper::GetIndexStorage, &wrapper, _1, _2);
callbacks.m_submitIndex = bind(&CallbacksWrapper::SubmitIndexes, &wrapper);
callbacks.m_getAvailableVertex = bind(&CallbacksWrapper::GetAvailableVertexCount, &wrapper);
callbacks.m_getAvailableIndex = bind(&CallbacksWrapper::GetAvailableIndexCount, &wrapper);
callbacks.m_changeBuffer = bind(&Batcher::ChangeBuffer, this, MakeStackRefPointer(&wrapper), _1);
TBatcher batch(callbacks);
batch.SetIsCanDevideStreams(handle.IsNull());
batch.SetVertexStride(vertexStride);
batch.BatchData(params);
}
if (!handle.IsNull())
bucket->AddOverlayHandle(handle.Move());
}
} // namespace dp
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