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#pragma once
#include "drape/glfunctions.hpp"
#include "drape/glsl_types.hpp"
#include "std/string.hpp"
#include "std/shared_array.hpp"
namespace dp
{
struct BindingDecl
{
string m_attributeName;
uint8_t m_componentCount;
glConst m_componentType;
uint8_t m_stride;
uint8_t m_offset;
bool operator != (BindingDecl const & other) const;
bool operator < (BindingDecl const & other) const;
};
class BindingInfo
{
public:
BindingInfo();
BindingInfo(uint8_t count, uint8_t id = 0);
~BindingInfo();
uint8_t GetCount() const;
uint8_t GetID() const;
BindingDecl const & GetBindingDecl(uint16_t index) const;
BindingDecl & GetBindingDecl(uint16_t index);
uint16_t GetElementSize() const;
bool IsDynamic() const;
bool operator< (BindingInfo const & other) const;
protected:
shared_array<BindingDecl> m_bindings;
uint16_t m_info;
};
template <typename TFieldType, typename TVertexType>
uint8_t FillDecl(size_t index, string const & attrName, dp::BindingInfo & info, uint8_t offset)
{
dp::BindingDecl & decl = info.GetBindingDecl(index);
decl.m_attributeName = attrName;
decl.m_componentCount = glsl::GetComponentCount<TFieldType>();
decl.m_componentType = gl_const::GLFloatType;
decl.m_offset = offset;
decl.m_stride = sizeof(TVertexType);
return sizeof(TFieldType);
}
template <typename TVertex>
class BindingFiller
{
public:
BindingFiller(uint8_t count, uint8_t id = 0)
: m_info(count, id)
{
}
template<typename TFieldType>
void FillDecl(string const & attrName)
{
m_offset += dp::FillDecl<TFieldType, TVertex>(m_index, attrName, m_info, m_offset);
++m_index;
}
dp::BindingInfo m_info;
private:
size_t m_index = 0;
uint8_t m_offset = 0;
};
} // namespace dp
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