6 #define TEXF_ALPHA 0x00000001
8 #define TEXF_MIPMAP 0x00000002
9 // upload if r_textureprecache >= 1, otherwise defer loading until it is used
10 #define TEXF_PRECACHE 0x00000004
11 // upload immediately, never defer (ignore r_textureprecache)
12 #define TEXF_ALWAYSPRECACHE 0x00000008
13 // allocated as a fragment in a larger texture, mipmap is not allowed with
14 // this, mostly used for lightmaps
15 #define TEXF_FRAGMENT 0x00000010
16 // used for checking if textures mismatch
17 #define TEXF_IMPORTANTBITS (TEXF_ALPHA | TEXF_MIPMAP | TEXF_FRAGMENT)
19 // 8bit quake paletted
20 #define TEXTYPE_QPALETTE 1
24 #define TEXTYPE_RGBA 3
26 // contents of this structure are mostly private to gl_textures.c
29 // this is exposed (rather than private) for speed reasons only
34 // contents of this structure are private to gl_textures.c
41 // allocate a texture pool, to be used with R_LoadTexture
42 rtexturepool_t *R_AllocTexturePool(void);
43 // free a texture pool (textures can not be freed individually)
44 void R_FreeTexturePool(rtexturepool_t **rtexturepool);
46 // important technical note:
47 // fragment textures must have a width that is compatible with the fragment
48 // update system, to get a compliant size, use R_CompatibleFragmentWidth
49 int R_CompatibleFragmentWidth(int width, int textype, int flags);
51 // add a texture to a pool and optionally precache (upload) it
52 // (note: data == NULL is perfectly acceptable)
53 rtexture_t *R_LoadTexture (rtexturepool_t *rtexturepool, char *identifier, int width, int height, qbyte *data, int textype, int flags);
56 void R_FreeTexture(rtexture_t *rt);
58 // update the image data of a texture, used by lightmap updates and
59 // procedural textures.
60 void R_UpdateTexture(rtexture_t *rt, qbyte *data);
62 // location of the fragment in the texture (note: any parameter except rt can
64 void R_FragmentLocation(rtexture_t *rt, int *x, int *y, float *fx1, float *fy1, float *fx2, float *fy2);
66 // returns the renderer dependent texture slot number (call this before each
67 // use, as a texture might not have been precached)
68 #define R_GetTexture(rt) ((rt) ? ((rt)->texnum >= 0 ? (rt)->texnum : R_RealGetTexture(rt)) : 0)
69 int R_RealGetTexture (rtexture_t *rt);
71 // returns true if the texture is transparent (useful for rendering code)
72 int R_TextureHasAlpha(rtexture_t *rt);
74 // returns width of texture, as was specified when it was uploaded
75 int R_TextureWidth(rtexture_t *rt);
77 // returns height of texture, as was specified when it was uploaded
78 int R_TextureHeight(rtexture_t *rt);
80 // frees processing buffers each frame, and may someday animate procedural textures
81 void R_Textures_Frame(void);