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#pragma once
#include "drape/pointers.hpp"
#include "drape/gpu_program.hpp"
#include "std/string.hpp"
#include "std/shared_array.hpp"
#include "std/cstring.hpp"
namespace dp
{
class UniformValue
{
public:
enum Type
{
Int,
Float,
Matrix4x4
};
explicit UniformValue(string const & name, int32_t v);
explicit UniformValue(string const & name, int32_t v1, int32_t v2);
explicit UniformValue(string const & name, int32_t v1, int32_t v2, int32_t v3);
explicit UniformValue(string const & name, int32_t v1, int32_t v2, int32_t v3, int32_t v4);
explicit UniformValue(string const & name, float v);
explicit UniformValue(string const & name, float v1, float v2);
explicit UniformValue(string const & name, float v1, float v2, float v3);
explicit UniformValue(string const & name, float v1, float v2, float v3, float v4);
explicit UniformValue(string const & name, float const * matrixValue);
string const & GetName() const;
Type GetType() const;
size_t GetComponentCount() const;
void SetIntValue(int32_t v);
void SetIntValue(int32_t v1, int32_t v2);
void SetIntValue(int32_t v1, int32_t v2, int32_t v3);
void SetIntValue(int32_t v1, int32_t v2, int32_t v3, int32_t v4);
void SetFloatValue(float v);
void SetFloatValue(float v1, float v2);
void SetFloatValue(float v1, float v2, float v3);
void SetFloatValue(float v1, float v2, float v3, float v4);
void SetMatrix4x4Value(float const * matrixValue);
void Apply(ref_ptr<GpuProgram> program) const;
bool operator<(UniformValue const & other) const
{
if (m_name != other.m_name)
return m_name < other.m_name;
if (m_type != other.m_type)
return m_type < other.m_type;
if (m_componentCount != other.m_componentCount)
return m_componentCount < other.m_componentCount;
size_t s = ((m_type == Int) ? sizeof(int32_t) : sizeof(float)) * m_componentCount;
return memcmp(m_values.get(), other.m_values.get(), s) < 0;
}
private:
void Allocate(size_t byteCount);
template <typename T>
T * CastMemory()
{
return reinterpret_cast<T *>(m_values.get());
}
template <typename T>
const T * CastMemory() const
{
return reinterpret_cast<T *>(m_values.get());
}
private:
string m_name;
Type m_type;
size_t m_componentCount;
shared_array<uint8_t> m_values;
};
} // namespace dp
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