GLTextureCube.h

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#pragma once
 
#include <vector>
 
#include "GLEnv.h"
#include "Image.h"

 
enum class Face {
  POSX=0, 
  NEGX,   
  POSY,   
  NEGY,   
  POSZ,   
  NEGZ    
};

class GLTextureCube {
public:
  GLTextureCube(GLint magFilter=GL_NEAREST, GLint minFilter=GL_NEAREST,
                GLint wrapX=GL_CLAMP_TO_EDGE, GLint wrapY=GL_CLAMP_TO_EDGE,
                GLint wrapZ=GL_CLAMP_TO_EDGE);
  ~GLTextureCube();

  GLTextureCube(const Image& image0, const Image& image1, const Image& image2,
                const Image& image3, const Image& image4, const Image& image5,
                GLint magFilter=GL_NEAREST, GLint minFilter=GL_NEAREST,
                GLint wrapX=GL_REPEAT, GLint wrapY=GL_REPEAT);

  GLTextureCube(const GLTextureCube& other);
  GLTextureCube& operator=(const GLTextureCube& other);

  const GLuint getId() const;

  void clear();

  void setEmpty(uint32_t width, uint32_t height, uint8_t componentCount,
                GLDataType dataType=GLDataType::BYTE);

  void setData(const Image& image, Face face);

  void setData(const std::vector<GLubyte>& data, uint32_t width,
               uint32_t height, Face face, uint8_t componentCount=4);

  void setData(const std::vector<GLubyte>& data, Face face);

  void setData(const std::vector<GLfloat>& data, uint32_t width,
               uint32_t height, Face face, uint8_t componentCount=4);

  void setData(const std::vector<GLfloat>& data, Face face);

  void setData(const std::vector<GLhalf>& data, uint32_t width,
               uint32_t height, Face face, uint8_t componentCount=4);

  void setData(const std::vector<GLhalf>& data, Face face);

  void setFilter(GLint magFilter, GLint minFilter);

  uint32_t getHeight() const {return height;}       
  uint32_t getWidth()  const {return width;}        
  uint32_t getComponentCount() const {return componentCount;} 
  uint32_t getSize() const {return height*width*componentCount;} 
  GLDataType getType() const {return dataType;}     

  void generateMipmap();
 
private:
  GLuint id;               
  GLint internalformat;    
  GLenum format;           
  GLenum type;             
 
  GLint magFilter;         
  GLint minFilter;         
  GLint wrapX;             
  GLint wrapY;             
  GLint wrapZ;             
  std::vector<GLubyte> data; 
  std::vector<GLhalf> hdata; 
  std::vector<GLfloat> fdata; 
  uint32_t width{0};       
  uint32_t height{0};      
  uint8_t componentCount{0}; 
  GLDataType dataType;     

  void setData(GLvoid* data, uint32_t width, uint32_t height, Face face,
               uint8_t componentCount, GLDataType dataType);
};