guicast/bctexture.h

   1 #ifndef BCTEXTURE_H
   2 #define BCTEXTURE_H
   3
   4
   5 #include "vframe.inc"
   6
   7
   8 // Container for texture objects
   9
  10 class BC_Texture
  11 {
  12 public:
  13         BC_Texture(int w, int h, int colormodel);
  14         ~BC_Texture();
  15
  16         friend class VFrame;
  17
  18 // Create a new texture if *texture if 0
  19 // or update the existing texture if *texture is
  20 // nonzero.  The created texture object is stored in *texture.
  21 // The texture parameters are stored in the texture manager.
  22 // The user must delete *texture when finished with it.
  23 // The texture is bound to the current texture unit and enabled.
  24 // Must be called from a synchronous opengl thread after enable_opengl.
  25         static void new_texture(BC_Texture **texture,
  26                 int w,
  27                 int h,
  28                 int colormodel);
  29
  30 // Bind the frame's texture to GL_TEXTURE_2D and enable it.
  31 // If a texture_unit is supplied, the texture unit is made active
  32 // and the commands are run in the right sequence to
  33 // initialize it to our preferred specifications.
  34 // The texture unit initialization requires the texture to be bound.
  35         void bind(int texture_unit = -1);
  36
  37 // Calculate the power of 2 size for allocating textures
  38         static int calculate_texture_size(int w, int *max = 0);
  39         int get_texture_id();
  40         int get_texture_w();
  41         int get_texture_h();
  42         int get_texture_components();
  43         int get_window_id();
  44
  45 private:
  46         void clear_objects();
  47
  48 // creates a new texture or updates an existing texture to work with the
  49 // current window.
  50         void create_texture(int w, int h, int colormodel);
  51
  52
  53         int window_id;
  54         int texture_id;
  55         int texture_w;
  56         int texture_h;
  57         int texture_components;
  58         int colormodel;
  59         int w;
  60         int h;
  61 };
  62
  63
  64 #endif