6 #define TEXF_ALPHA 0x00000001
8 #define TEXF_MIPMAP 0x00000002
9 // multiply RGB by A channel before uploading
10 #define TEXF_RGBMULTIPLYBYALPHA 0x00000004
11 // indicates texture coordinates should be clamped rather than wrapping
12 #define TEXF_CLAMP 0x00000020
13 // indicates texture should be uploaded using GL_NEAREST or GL_NEAREST_MIPMAP_NEAREST mode
14 #define TEXF_FORCENEAREST 0x00000040
15 // indicates texture should be uploaded using GL_LINEAR or GL_LINEAR_MIPMAP_NEAREST or GL_LINEAR_MIPMAP_LINEAR mode
16 #define TEXF_FORCELINEAR 0x00000080
17 // indicates texture should be affected by gl_picmip and gl_max_size cvar
18 #define TEXF_PICMIP 0x00000100
19 // indicates texture should be compressed if possible
20 #define TEXF_COMPRESS 0x00000200
21 // use this flag to block R_PurgeTexture from freeing a texture (only used by r_texture_white and similar which may be used in skinframe_t)
22 #define TEXF_PERSISTENT 0x00000400
23 // indicates texture should use GL_COMPARE_R_TO_TEXTURE mode
24 #define TEXF_COMPARE 0x00000800
25 // indicates texture should use lower precision where supported
26 #define TEXF_LOWPRECISION 0x00001000
27 // indicates texture should support R_UpdateTexture on small regions, actual uploads may be delayed until R_Mesh_TexBind if gl_nopartialtextureupdates is on
28 #define TEXF_ALLOWUPDATES 0x00002000
29 // indicates texture should be affected by gl_picmip_world and r_picmipworld (maybe others in the future) instead of gl_picmip_other
30 #define TEXF_ISWORLD 0x00004000
31 // indicates texture should be affected by gl_picmip_sprites and r_picmipsprites (maybe others in the future) instead of gl_picmip_other
32 #define TEXF_ISSPRITE 0x00008000
33 // indicates the texture will be used as a render target (D3D hint)
34 #define TEXF_RENDERTARGET 0x0010000
35 // used for checking if textures mismatch
36 #define TEXF_IMPORTANTBITS (TEXF_ALPHA | TEXF_MIPMAP | TEXF_RGBMULTIPLYBYALPHA | TEXF_CLAMP | TEXF_FORCENEAREST | TEXF_FORCELINEAR | TEXF_PICMIP | TEXF_COMPRESS | TEXF_COMPARE | TEXF_LOWPRECISION | TEXF_RENDERTARGET)
38 typedef enum textype_e
44 // 32bit BGRA (preferred format due to faster uploads on most hardware)
46 // 8bit ALPHA (used for freetype fonts)
48 // 4x4 block compressed 15bit color (4 bits per pixel)
50 // 4x4 block compressed 15bit color plus 1bit alpha (4 bits per pixel)
52 // 4x4 block compressed 15bit color plus 8bit alpha (8 bits per pixel)
54 // 4x4 block compressed 15bit color plus 8bit alpha (8 bits per pixel)
57 // 8bit paletted in sRGB colorspace
59 // 32bit RGBA in sRGB colorspace
61 // 32bit BGRA (preferred format due to faster uploads on most hardware) in sRGB colorspace
63 // 4x4 block compressed 15bit color (4 bits per pixel) in sRGB colorspace
65 // 4x4 block compressed 15bit color plus 1bit alpha (4 bits per pixel) in sRGB colorspace
67 // 4x4 block compressed 15bit color plus 8bit alpha (8 bits per pixel) in sRGB colorspace
69 // 4x4 block compressed 15bit color plus 8bit alpha (8 bits per pixel) in sRGB colorspace
72 // this represents the same format as the framebuffer, for fast copies
74 // this represents an RGBA half_float texture (4 16bit floats)
75 TEXTYPE_COLORBUFFER16F,
76 // this represents an RGBA float texture (4 32bit floats)
77 TEXTYPE_COLORBUFFER32F,
78 // 16bit D16 (16bit depth) or 32bit S8D24 (24bit depth, 8bit stencil unused)
86 #define SUPPORTDIRECTX
93 // contents of this structure are mostly private to gl_textures.c
94 typedef struct rtexture_s
96 // this is exposed (rather than private) for speed reasons only
99 int gltexturetypeenum; // exposed for use in R_Mesh_TexBind
100 // d3d stuff the backend needs
103 qboolean d3disdepthsurface; // for depth/stencil surfaces
113 int d3dmaxmiplevelfilter;
114 int d3dmipmaplodbias;
120 // contents of this structure are private to gl_textures.c
121 typedef struct rtexturepool_s
127 typedef void (*updatecallback_t)(rtexture_t *rt, void *data);
129 // allocate a texture pool, to be used with R_LoadTexture
130 rtexturepool_t *R_AllocTexturePool(void);
131 // free a texture pool (textures can not be freed individually)
132 void R_FreeTexturePool(rtexturepool_t **rtexturepool);
134 // the color/normal/etc cvars should be checked by callers of R_LoadTexture* functions to decide whether to add TEXF_COMPRESS to the flags
135 extern cvar_t gl_texturecompression;
136 extern cvar_t gl_texturecompression_color;
137 extern cvar_t gl_texturecompression_normal;
138 extern cvar_t gl_texturecompression_gloss;
139 extern cvar_t gl_texturecompression_glow;
140 extern cvar_t gl_texturecompression_2d;
141 extern cvar_t gl_texturecompression_q3bsplightmaps;
142 extern cvar_t gl_texturecompression_q3bspdeluxemaps;
143 extern cvar_t gl_texturecompression_sky;
144 extern cvar_t gl_texturecompression_lightcubemaps;
145 extern cvar_t gl_texturecompression_reflectmask;
147 // add a texture to a pool and optionally precache (upload) it
148 // (note: data == NULL is perfectly acceptable)
149 // (note: palette must not be NULL if using TEXTYPE_PALETTE)
150 rtexture_t *R_LoadTexture2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, const unsigned char *data, textype_t textype, int flags, int miplevel, const unsigned int *palette);
151 rtexture_t *R_LoadTexture3D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, const unsigned char *data, textype_t textype, int flags, int miplevel, const unsigned int *palette);
152 rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, textype_t textype, int flags, int miplevel, const unsigned int *palette);
153 rtexture_t *R_LoadTextureShadowMap2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int precision, qboolean filter);
154 rtexture_t *R_LoadTextureDDSFile(rtexturepool_t *rtexturepool, const char *filename, int flags, qboolean *hasalphaflag, float *avgcolor, int miplevel);
156 // saves a texture to a DDS file
157 int R_SaveTextureDDSFile(rtexture_t *rt, const char *filename, qboolean skipuncompressed, qboolean hasalpha);
160 void R_FreeTexture(rtexture_t *rt);
162 // update a portion of the image data of a texture, used by lightmap updates
163 // and procedural textures such as video playback, actual uploads may be
164 // delayed by gl_nopartialtextureupdates cvar until R_Mesh_TexBind uses it
165 void R_UpdateTexture(rtexture_t *rt, const unsigned char *data, int x, int y, int z, int width, int height, int depth);
167 // returns the renderer dependent texture slot number (call this before each
168 // use, as a texture might not have been precached)
169 #define R_GetTexture(rt) ((rt) ? ((rt)->dirty ? R_RealGetTexture(rt) : (rt)->texnum) : r_texture_white->texnum)
170 int R_RealGetTexture (rtexture_t *rt);
172 // returns width of texture, as was specified when it was uploaded
173 int R_TextureWidth(rtexture_t *rt);
175 // returns height of texture, as was specified when it was uploaded
176 int R_TextureHeight(rtexture_t *rt);
178 // only frees the texture if TEXF_PERSISTENT is not set
179 // also resets the variable
180 void R_PurgeTexture(rtexture_t *prt);
182 // frees processing buffers each frame, and may someday animate procedural textures
183 void R_Textures_Frame(void);
185 // maybe rename this - sounds awful? [11/21/2007 Black]
186 void R_MarkDirtyTexture(rtexture_t *rt);
187 void R_MakeTextureDynamic(rtexture_t *rt, updatecallback_t updatecallback, void *data);
189 // Clear the texture's contents
190 void R_ClearTexture (rtexture_t *rt);
192 // returns the desired picmip level for given TEXF_ flags
193 int R_PicmipForFlags(int flags);