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batcher_helpers.hpp
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#pragma once
#include "drape/pointers.hpp"
#include "std/function.hpp"
#include "std/vector.hpp"
namespace dp
{
class AttributeProvider;
class BindingInfo;
class BatchCallbacks
{
public:
virtual void FlushData(BindingInfo const & binding, void const * data, uint32_t count) = 0;
virtual void * GetIndexStorage(uint32_t indexCount, uint32_t & startIndex) = 0;
virtual void SubmitIndices() = 0;
virtual uint32_t GetAvailableVertexCount() const = 0;
virtual uint32_t GetAvailableIndexCount() const = 0;
virtual void ChangeBuffer() = 0;
};
class UniversalBatch
{
public:
UniversalBatch(BatchCallbacks & callbacks, uint8_t minVerticesCount, uint8_t minIndicesCount);
virtual ~UniversalBatch(){}
virtual void BatchData(ref_ptr<AttributeProvider> streams) = 0;
void SetCanDevideStreams(bool canDevide);
bool CanDevideStreams() const;
void SetVertexStride(uint8_t vertexStride);
protected:
void FlushData(ref_ptr<AttributeProvider> streams, uint32_t vertexCount) const;
void FlushData(BindingInfo const & info, void const * data, uint32_t elementCount) const;
void * GetIndexStorage(uint32_t indexCount, uint32_t & startIndex);
void SubmitIndex();
uint32_t GetAvailableVertexCount() const;
uint32_t GetAvailableIndexCount() const;
void ChangeBuffer() const;
uint8_t GetVertexStride() const;
virtual bool IsBufferFilled(uint32_t availableVerticesCount, uint32_t availableIndicesCount) const;
private:
BatchCallbacks & m_callbacks;
bool m_canDevideStreams;
uint8_t m_vertexStride;
uint8_t const m_minVerticesCount;
uint8_t const m_minIndicesCount;
};
class TriangleListBatch : public UniversalBatch
{
using TBase = UniversalBatch;
public:
TriangleListBatch(BatchCallbacks & callbacks);
void BatchData(ref_ptr<AttributeProvider> streams) override;
};
class LineStripBatch : public UniversalBatch
{
using TBase = UniversalBatch;
public:
LineStripBatch(BatchCallbacks & callbacks);
void BatchData(ref_ptr<AttributeProvider> streams) override;
};
class LineRawBatch : public UniversalBatch
{
using TBase = UniversalBatch;
public:
LineRawBatch(BatchCallbacks & callbacks, vector<int> const & indices);
void BatchData(ref_ptr<AttributeProvider> streams) override;
private:
vector<int> const & m_indices;
};
class FanStripHelper : public UniversalBatch
{
using TBase = UniversalBatch;
public:
FanStripHelper(BatchCallbacks & callbacks);
protected:
uint32_t BatchIndexes(uint32_t vertexCount);
void CalcBatchPortion(uint32_t vertexCount, uint32_t avVertex, uint32_t avIndex,
uint32_t & batchVertexCount, uint32_t & batchIndexCount);
bool IsFullUploaded() const;
virtual uint32_t VtoICount(uint32_t vCount) const;
virtual uint32_t ItoVCount(uint32_t iCount) const;
virtual uint32_t AlignVCount(uint32_t vCount) const;
virtual uint32_t AlignICount(uint32_t vCount) const;
virtual void GenerateIndexes(void * indexStorage, uint32_t count, uint32_t startIndex) const = 0;
private:
bool m_isFullUploaded;
};
class TriangleStripBatch : public FanStripHelper
{
using TBase = FanStripHelper;
public:
TriangleStripBatch(BatchCallbacks & callbacks);
virtual void BatchData(ref_ptr<AttributeProvider> streams);
protected:
virtual void GenerateIndexes(void * indexStorage, uint32_t count, uint32_t startIndex) const;
};
class TriangleFanBatch : public FanStripHelper
{
using TBase = FanStripHelper;
public:
TriangleFanBatch(BatchCallbacks & callbacks);
virtual void BatchData(ref_ptr<AttributeProvider> streams);
protected:
virtual void GenerateIndexes(void * indexStorage, uint32_t count, uint32_t startIndex) const;
};
class TriangleListOfStripBatch : public FanStripHelper
{
using TBase = FanStripHelper;
public:
TriangleListOfStripBatch(BatchCallbacks & callbacks);
virtual void BatchData(ref_ptr<AttributeProvider> streams);
protected:
virtual bool IsBufferFilled(uint32_t availableVerticesCount, uint32_t availableIndicesCount) const;
virtual uint32_t VtoICount(uint32_t vCount) const;
virtual uint32_t ItoVCount(uint32_t iCount) const;
virtual uint32_t AlignVCount(uint32_t vCount) const;
virtual uint32_t AlignICount(uint32_t iCount) const;
virtual void GenerateIndexes(void * indexStorage, uint32_t count, uint32_t startIndex) const;
};
} // namespace dp