texture2d.h

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/*
 This file is part of the MinGfx Project.
 
 Copyright (c) 2017,2018 Regents of the University of Minnesota.
 All Rights Reserved.
 
 Original Author(s) of this File:
    Dan Keefe, 2018, University of Minnesota
    
 Author(s) of Significant Updates/Modifications to the File:
    ...
 */
 
#ifndef SRC_TEXTURE2D_H_
#define SRC_TEXTURE2D_H_
 
 
#include "opengl_headers.h"
#include "color.h"
 
#include <string>
 
 
namespace mingfx {
 
class Texture2D {
public:
 
    Texture2D(GLenum wrapMode=GL_REPEAT, GLenum filterMode=GL_LINEAR);
    virtual ~Texture2D();
 
    
    bool InitFromFile(const std::string &filename);
    
    bool InitFromBytes(int width, int height, const unsigned char * data);
    
    bool InitFromFloats(int width, int height, const float * data);
 
    
    bool UpdateFromBytes(const unsigned char * data);
 
    bool UpdateFromFloats(const float * data);
 
    
    bool initialized() const;
    
    int width() const;
    
    int height() const;
 
    GLuint opengl_id() const;
 
    GLenum wrap_mode() const;
 
    GLenum filter_mode() const;
    
    void set_wrap_mode(GLenum wrapMode);
 
    void set_filter_mode(GLenum filterMode);
    
    Color Pixel(int x, int y) const;
    
private:
    
    bool InitOpenGL();
    
    GLenum dataType_; // GL_UNSIGNED_BYTE or GL_FLOAT
    const unsigned char * data_ubyte_;
    const float * data_float_;
    
    int width_;
    int height_;
    bool handleMemInternally_;
    
    GLuint texID_;
    GLenum wrapMode_;
    GLenum filterMode_;
};
 
    
} // end namespace
 
#endif