opengl_tex.h

/*
 * See Licensing and Copyright notice in naev.h
 */
#pragma once
 
#include <stdint.h>
#include "SDL.h"
#include "attributes.h"
#include "colour.h"
#include "physics.h"
 
/* Recommended for compatibility and such */
#define RMASK   SDL_SwapLE32(0x000000ff) 
#define GMASK   SDL_SwapLE32(0x0000ff00) 
#define BMASK   SDL_SwapLE32(0x00ff0000) 
#define AMASK   SDL_SwapLE32(0xff000000) 
#define RGBAMASK  RMASK,GMASK,BMASK,AMASK
 
/*
 * Texture flags.
 */
#define OPENGL_TEX_MAPTRANS   (1<<0) 
#define OPENGL_TEX_MIPMAPS    (1<<1) 
#define OPENGL_TEX_VFLIP      (1<<2) 
#define OPENGL_TEX_SKIPCACHE  (1<<3) 
#define OPENGL_TEX_SDF        (1<<4) 
typedef struct glTexture_ {
   char *name; 
   /* dimensions */
   double w; 
   double h; 
   /* sprites */
   double sx; 
   double sy; 
   double sw; 
   double sh; 
   double srw; 
   double srh; 
   /* data */
   GLuint texture; 
   uint8_t* trans; 
   double vmax; 
   /* properties */
   uint8_t flags; 
} glTexture;
 
/*
 * Init/exit.
 */
int gl_initTextures (void);
void gl_exitTextures (void);
 
/*
 * Creating.
 */
USE_RESULT glTexture* gl_loadImageData( float *data, int w, int h, int sx, int sy, const char* name );
USE_RESULT glTexture* gl_loadImagePad( const char *name, SDL_Surface* surface,
      unsigned int flags, int w, int h, int sx, int sy, int freesur );
USE_RESULT glTexture* gl_loadImagePadTrans( const char *name, SDL_Surface* surface, SDL_RWops *rw,
      unsigned int flags, int w, int h, int sx, int sy, int freesur );
USE_RESULT glTexture* gl_loadImage( SDL_Surface* surface, const unsigned int flags ); /* Frees the surface. */
USE_RESULT glTexture* gl_newImage( const char* path, const unsigned int flags );
USE_RESULT glTexture* gl_newImageRWops( const char* path, SDL_RWops *rw, const unsigned int flags ); /* Does not close the RWops. */
USE_RESULT glTexture* gl_newSprite( const char* path, const int sx, const int sy,
      const unsigned int flags );
USE_RESULT glTexture* gl_newSpriteRWops( const char* path, SDL_RWops *rw,
   const int sx, const int sy, const unsigned int flags );
USE_RESULT glTexture* gl_dupTexture( const glTexture *texture );
 
/*
 * Clean up.
 */
void gl_freeTexture( glTexture* texture );
 
/*
 * FBO stuff.
 */
int gl_fboCreate( GLuint *fbo, GLuint *tex, GLsizei width, GLsizei height );
 
/*
 * Misc.
 */
void gl_contextSet (void);
void gl_contextUnset (void);
int gl_isTrans( const glTexture* t, const int x, const int y );
void gl_getSpriteFromDir( int* x, int* y, const glTexture* t, const double dir );
glTexture** gl_copyTexArray( glTexture **tex );
glTexture** gl_addTexArray( glTexture **tex, glTexture *t );