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Fr4nz D13trich 2025-11-22 13:58:55 +01:00
parent 4af19165ec
commit 68073add76
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libs/drape/batcher_helpers.hpp Normal file
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#pragma once
#include "drape/graphics_context.hpp"
#include "drape/pointers.hpp"
#include <vector>
namespace dp
{
class AttributeProvider;
class BindingInfo;
class BatchCallbacks
{
public:
virtual ~BatchCallbacks() = default;
virtual void FlushData(ref_ptr<GraphicsContext> context, BindingInfo const & binding, void const * data,
uint32_t count) = 0;
virtual void * GetIndexStorage(uint32_t indexCount, uint32_t & startIndex) = 0;
virtual void SubmitIndices(ref_ptr<GraphicsContext> context) = 0;
virtual uint32_t GetAvailableVertexCount() const = 0;
virtual uint32_t GetAvailableIndexCount() const = 0;
virtual void ChangeBuffer(ref_ptr<GraphicsContext> context) = 0;
};
class UniversalBatch
{
public:
UniversalBatch(BatchCallbacks & callbacks, uint8_t minVerticesCount, uint8_t minIndicesCount);
virtual ~UniversalBatch() = default;
virtual void BatchData(ref_ptr<GraphicsContext> context, ref_ptr<AttributeProvider> streams) = 0;
void SetCanDivideStreams(bool canDivide);
bool CanDivideStreams() const;
void SetVertexStride(uint8_t vertexStride);
protected:
void FlushData(ref_ptr<GraphicsContext> context, ref_ptr<AttributeProvider> streams, uint32_t vertexCount) const;
void FlushData(ref_ptr<GraphicsContext> context, BindingInfo const & info, void const * data,
uint32_t elementCount) const;
void * GetIndexStorage(uint32_t indexCount, uint32_t & startIndex);
void SubmitIndices(ref_ptr<GraphicsContext> context);
uint32_t GetAvailableVertexCount() const;
uint32_t GetAvailableIndexCount() const;
void ChangeBuffer(ref_ptr<GraphicsContext> context) const;
uint8_t GetVertexStride() const;
virtual bool IsBufferFilled(uint32_t availableVerticesCount, uint32_t availableIndicesCount) const;
private:
BatchCallbacks & m_callbacks;
bool m_canDivideStreams;
uint8_t m_vertexStride;
uint8_t const m_minVerticesCount;
uint8_t const m_minIndicesCount;
};
class TriangleListBatch : public UniversalBatch
{
using TBase = UniversalBatch;
public:
explicit TriangleListBatch(BatchCallbacks & callbacks);
void BatchData(ref_ptr<GraphicsContext> context, ref_ptr<AttributeProvider> streams) override;
};
class LineStripBatch : public UniversalBatch
{
using TBase = UniversalBatch;
public:
explicit LineStripBatch(BatchCallbacks & callbacks);
void BatchData(ref_ptr<GraphicsContext> context, ref_ptr<AttributeProvider> streams) override;
};
class LineRawBatch : public UniversalBatch
{
using TBase = UniversalBatch;
public:
LineRawBatch(BatchCallbacks & callbacks, std::vector<int> const & indices);
void BatchData(ref_ptr<GraphicsContext> context, ref_ptr<AttributeProvider> streams) override;
private:
std::vector<int> const & m_indices;
};
class FanStripHelper : public UniversalBatch
{
using TBase = UniversalBatch;
public:
explicit FanStripHelper(BatchCallbacks & callbacks);
protected:
uint32_t BatchIndexes(ref_ptr<GraphicsContext> context, 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:
explicit TriangleStripBatch(BatchCallbacks & callbacks);
void BatchData(ref_ptr<GraphicsContext> context, ref_ptr<AttributeProvider> streams) override;
protected:
void GenerateIndexes(void * indexStorage, uint32_t count, uint32_t startIndex) const override;
};
class TriangleFanBatch : public FanStripHelper
{
using TBase = FanStripHelper;
public:
explicit TriangleFanBatch(BatchCallbacks & callbacks);
void BatchData(ref_ptr<GraphicsContext> context, ref_ptr<AttributeProvider> streams) override;
protected:
void GenerateIndexes(void * indexStorage, uint32_t count, uint32_t startIndex) const override;
};
class TriangleListOfStripBatch : public FanStripHelper
{
using TBase = FanStripHelper;
public:
explicit TriangleListOfStripBatch(BatchCallbacks & callbacks);
void BatchData(ref_ptr<GraphicsContext> context, ref_ptr<AttributeProvider> streams) override;
protected:
bool IsBufferFilled(uint32_t availableVerticesCount, uint32_t availableIndicesCount) const override;
uint32_t VtoICount(uint32_t vCount) const override;
uint32_t ItoVCount(uint32_t iCount) const override;
uint32_t AlignVCount(uint32_t vCount) const override;
uint32_t AlignICount(uint32_t iCount) const override;
void GenerateIndexes(void * indexStorage, uint32_t count, uint32_t startIndex) const override;
};
} // namespace dp