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#pragma once
#include "drape/index_buffer_mutator.hpp"
#include "drape/attribute_buffer_mutator.hpp"
#include "drape/pointers.hpp"
#include "drape/index_buffer.hpp"
#include "drape/data_buffer.hpp"
#include "drape/binding_info.hpp"
#include "drape/gpu_program.hpp"
#include "std/map.hpp"
namespace df
{
class BatchMergeHelper;
}
namespace dp
{
struct IndicesRange
{
uint32_t m_idxStart;
uint32_t m_idxCount;
IndicesRange()
: m_idxStart(0), m_idxCount(0)
{}
IndicesRange(uint32_t idxStart, uint32_t idxCount)
: m_idxStart(idxStart), m_idxCount(idxCount)
{}
bool IsValid() const { return m_idxCount != 0; }
};
class VertexArrayBuffer
{
typedef map<BindingInfo, drape_ptr<DataBuffer> > TBuffersMap;
friend class df::BatchMergeHelper;
public:
VertexArrayBuffer(uint32_t indexBufferSize, uint32_t dataBufferSize);
~VertexArrayBuffer();
/// This method must be call on reading thread, before VAO will be transfer on render thread
void Preflush();
///{@
/// On devices where implemented OES_vertex_array_object extensions we use it for build VertexArrayBuffer
/// OES_vertex_array_object create OpenGL resource that belong only one GL context (which was created by)
/// by this reason Build/Bind and Render must be called only on Frontendrendere thread
void Render(bool drawAsLine);
void RenderRange(bool drawAsLine, IndicesRange const & range);
void Build(ref_ptr<GpuProgram> program);
///@}
uint32_t GetAvailableVertexCount() const;
uint32_t GetAvailableIndexCount() const;
uint32_t GetStartIndexValue() const;
uint32_t GetDynamicBufferOffset(BindingInfo const & bindingInfo);
uint32_t GetIndexCount() const;
void UploadData(BindingInfo const & bindingInfo, void const * data, uint32_t count);
void UploadIndexes(void const * data, uint32_t count);
void ApplyMutation(ref_ptr<IndexBufferMutator> indexMutator,
ref_ptr<AttributeBufferMutator> attrMutator);
void ResetChangingTracking() { m_isChanged = false; }
bool IsChanged() const { return m_isChanged; }
private:
ref_ptr<DataBuffer> GetOrCreateStaticBuffer(BindingInfo const & bindingInfo);
ref_ptr<DataBuffer> GetOrCreateDynamicBuffer(BindingInfo const & bindingInfo);
ref_ptr<DataBuffer> GetDynamicBuffer(BindingInfo const & bindingInfo) const;
ref_ptr<DataBuffer> GetOrCreateBuffer(BindingInfo const & bindingInfo, bool isDynamic);
ref_ptr<DataBuffer> GetBuffer(BindingInfo const & bindingInfo, bool isDynamic) const;
bool Bind() const;
void Unbind() const;
void BindStaticBuffers() const;
void BindDynamicBuffers() const;
void BindBuffers(TBuffersMap const & buffers) const;
ref_ptr<DataBufferBase> GetIndexBuffer() const;
void PreflushImpl();
private:
/// m_VAO - VertexArrayObject name/identificator
int m_VAO;
TBuffersMap m_staticBuffers;
TBuffersMap m_dynamicBuffers;
drape_ptr<IndexBuffer> m_indexBuffer;
uint32_t m_dataBufferSize;
ref_ptr<GpuProgram> m_program;
bool m_isPreflushed;
bool m_moveToGpuOnBuild;
bool m_isChanged;
};
} // namespace dp
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