axmol/cocos/renderer/backend/VertexLayout.h

53 lines
1.5 KiB
C++

#pragma once
#include "Macros.h"
#include "Types.h"
#include "base/CCRef.h"
#include <string>
#include <cstdint>
#include <vector>
#include <unordered_map>
CC_BACKEND_BEGIN
class VertexLayout
{
public:
struct Attribute
{
Attribute() = default;
Attribute(const std::string& _name, unsigned int _index, VertexFormat _format, unsigned int _offset, bool needToBeNormallized)
: name(_name)
, format(_format)
, offset(_offset)
, index(_index)
, needToBeNormallized(needToBeNormallized)
{}
// name is used in opengl
std::string name;
VertexFormat format = VertexFormat::INT3;
unsigned int offset = 0;
// index is used in metal
unsigned int index = 0;
bool needToBeNormallized = false;
};
void setAtrribute(const std::string& name, unsigned int index, VertexFormat format, unsigned int offset, bool needToBeNormallized);
//FIXME: remove stepMode?
void setLayout(unsigned int stride, VertexStepMode stepMode);
inline unsigned int getStride() const { return _stride; }
inline VertexStepMode getVertexStepMode() const { return _stepMode; }
inline const std::unordered_map<std::string, Attribute>& getAttributes() const { return _attributes; }
inline bool isValid() const { return _stride != 0; }
private:
std::unordered_map<std::string, Attribute> _attributes;
unsigned int _stride = 0;
VertexStepMode _stepMode = VertexStepMode::VERTEX;
};
CC_BACKEND_END