ref: f64250f9c3b1376064cd214c36064044c98b117e
dir: /d_local.h/
// d_local.h: private rasterization driver defs enum { DS_SPAN_LIST_END = -128, SURFCACHE_SIZE_AT_320X200 = 600*1024, }; typedef struct { struct { float stepu; float stepv; float origin; }divz; fixed16_t adjust; fixed16_t bbextent; }tavars_t; typedef struct { pixel_t *p; unsigned w; tavars_t s, t; struct { float stepu; float stepv; float origin; }z; }texvars_t; typedef struct { pixel_t *fb; uzint *zb; unsigned w; }dvars_t; typedef struct { pixel_t *source[2]; int w, h; int smask, tmask; int tshift; float speed, time; }skyvars_t; typedef struct surfcache_s { struct surfcache_s *next; struct surfcache_s **owner; // NULL is an empty chunk of memory int lightadj[MAXLIGHTMAPS]; // checked for strobe flush int dlight; int size; // including header int width; int height; // DEBUG only needed for debug float mipscale; struct texture_s *texture; // checked for animating textures pixel_t pixels[]; // width*height elements } surfcache_t; // !!! if this is changed, it must be changed in asm_draw.h too !!! typedef struct sspan_s { int u, v, count; } sspan_t; extern cvar_t d_subdiv16; extern float scale_for_mip; extern bool d_roverwrapped; extern surfcache_t *sc_rover; extern surfcache_t *d_initial_rover; extern dvars_t dvars; extern skyvars_t skyvars; enum { SPAN_BLEND, SPAN_FENCE, SPAN_SOLID, SPAN_TURB, }; void D_DrawSpans(espan_t *pspan, texvars_t *t, byte alpha, int spanfunc); void D_DrawSkyScans8 (espan_t *pspan); surfcache_t *D_CacheSurface (entity_t *e, msurface_t *surface, int miplevel); extern int *d_pscantable; extern int d_scantable[MAXHEIGHT]; extern int d_vrectx, d_vrecty, d_vrectright_particle, d_vrectbottom_particle; extern int d_pix_min, d_pix_max; extern uzint *zspantable[MAXHEIGHT]; extern int d_minmip; extern float d_scalemip[3]; static inline pixel_t mulalpha(pixel_t ca, int alpha) { pixel_t a, b; a = ((ca >> 0) & 0xff00ff)*alpha + 0x800080; a = (a + ((a >> 8) & 0xff00ff)) >> 8; a &= 0x00ff00ff; b = ((ca >> 8) & 0xff00ff)*alpha + 0x800080; b = (b + ((b >> 8) & 0xff00ff)) >> 0; b &= 0xff00ff00; return a | b; } pixel_t blendadditive(pixel_t ca, pixel_t cb, int alpha); pixel_t blendalpha(pixel_t ca, pixel_t cb, int alpha); float alphafor(int flags);