1 #ifndef TEXTURE_H_

2 #define TEXTURE_H_

3

4 #include "dataset.h"

5 #include "opengl.h"

6

7 namespace goatgfx {

8

9 class Image;

10

11 class Texture {

12 protected:

13 unsigned int id;

14 unsigned int target;

15 unsigned int texfmt;

16 int sz[3];

17

18 Texture(const Texture &tex) {}

19 Texture &operator =(const Texture &tex) { return *this; }

20

21 public:

22 Texture();

23 virtual ~Texture();

24

25 void set_wrapping(unsigned int wrap);

26 void set_filtering(unsigned int filt);

27 void set_filtering(unsigned int min_filt, unsigned int mag_filt);

28

29 unsigned int get_format() const;

30

31 virtual int get_size(int dim) const;

32

33 virtual void create(int xsz, int ysz, unsigned int ifmt = GL_RGBA) = 0;

34 virtual void set_image(const Image &img, int idx = 0) = 0;

35

36 virtual bool load(const char *fname) = 0;

37 virtual bool save(const char *fname) const = 0;

38

39 virtual unsigned int get_id() const;

40

41 virtual void bind(int tex_unit = 0) const;

42 };

43

44 class Texture2D : public Texture {

45 public:

46 Texture2D();

47

48 virtual void create(int xsz, int ysz, unsigned int ifmt = GL_RGBA);

49 virtual void set_image(const Image &img, int idx = 0);

50

51 virtual bool load(const char *fname);

52 virtual bool save(const char *fname) const;

53 };

54

55 class TextureCube : public Texture {

56 private:

57 bool load_multi(const Image &img, const float *xoffsets, const float *yoffsets, float sz,

58 unsigned int rotmask = 0);

59

60 public:

61 TextureCube();

62

63 virtual void create(int xsz, int ysz, unsigned int ifmt = GL_RGBA);

64 virtual void set_image(const Image &img, int idx = 0);

65

66 virtual bool load(const char *fname);

67 virtual bool save(const char *fname) const;

68 };

69

70 void set_texture(Texture *tex, int tunit = 0);

71

72 /** loads a texture autodetecting whether it's a 2D texture or

73 * cubemap and creating the correct Texture subclass instance.

74 */

75 Texture *load_texture(const char *fname);

76

77 class TextureSet : public DataSet<Texture*> {

78 public:

79 TextureSet();

80 };

81

82 } // namespace goatgfx

83

84 #endif // TEXTURE_H_