// d_surf.c: rasterization driver surface heap manager /* * $Header: /H2 Mission Pack/D_SURF.C 2 3/01/98 8:20p Jmonroe $ */ #include "quakedef.h" #include "d_local.h" #include "r_local.h" float surfscale; qboolean r_cache_thrash; // set if surface cache is thrashing int sc_size; surfcache_t *sc_rover, *sc_base; #define GUARDSIZE 4 int D_SurfaceCacheForRes (int width, int height) { int size, pix; if (COM_CheckParm ("-surfcachesize")) { size = atoi(com_argv[COM_CheckParm("-surfcachesize")+1]) * 1024; return size; } size = SURFCACHE_SIZE_AT_320X200; pix = width*height; if (pix > 64000) size += (pix-64000)*3; return size; } void D_CheckCacheGuard (void) { byte *s; int i; s = (byte *)sc_base + sc_size; for (i=0 ; inext = NULL; sc_base->owner = NULL; sc_base->size = sc_size; D_ClearCacheGuard (); } /* ================== D_FlushCaches ================== */ void D_FlushCaches (void) { surfcache_t *c; if (!sc_base) return; for (c = sc_base ; c ; c = c->next) { if (c->owner) *c->owner = NULL; } sc_rover = sc_base; sc_base->next = NULL; sc_base->owner = NULL; sc_base->size = sc_size; } /* ================= D_SCAlloc ================= */ surfcache_t *D_SCAlloc (int width, int size) { surfcache_t *new; qboolean wrapped_this_time; if ((width < 0) || (width > 256)) Sys_Error ("D_SCAlloc: bad cache width %d\n", width); if ((size <= 0) || (size > 0x10000)) Sys_Error ("D_SCAlloc: bad cache size %d\n", size); size = (int)&((surfcache_t *)0)->data[size]; size = (size + 3) & ~3; if (size > sc_size) Sys_Error ("D_SCAlloc: %i > cache size",size); // if there is not size bytes after the rover, reset to the start wrapped_this_time = false; if ( !sc_rover || (byte *)sc_rover - (byte *)sc_base > sc_size - size) { if (sc_rover) { wrapped_this_time = true; } sc_rover = sc_base; } // colect and free surfcache_t blocks until the rover block is large enough new = sc_rover; if (sc_rover->owner) *sc_rover->owner = NULL; while (new->size < size) { // free another sc_rover = sc_rover->next; if (!sc_rover) Sys_Error ("D_SCAlloc: hit the end of memory"); if (sc_rover->owner) *sc_rover->owner = NULL; new->size += sc_rover->size; new->next = sc_rover->next; } // create a fragment out of any leftovers if (new->size - size > 256) { sc_rover = (surfcache_t *)( (byte *)new + size); sc_rover->size = new->size - size; sc_rover->next = new->next; sc_rover->width = 0; sc_rover->owner = NULL; new->next = sc_rover; new->size = size; } else sc_rover = new->next; new->width = width; // DEBUG if (width > 0) new->height = (size - sizeof(*new) + sizeof(new->data)) / width; new->owner = NULL; // should be set properly after return if (d_roverwrapped) { if (wrapped_this_time || (sc_rover >= d_initial_rover)) r_cache_thrash = true; } else if (wrapped_this_time) { d_roverwrapped = true; } D_CheckCacheGuard (); // DEBUG return new; } /* ================= D_SCDump ================= */ void D_SCDump (void) { surfcache_t *test; for (test = sc_base ; test ; test = test->next) { if (test == sc_rover) Sys_Printf ("ROVER:\n"); printf ("%p : %i bytes %i width\n",test, test->size, test->width); } } //============================================================================= // if the num is not a power of 2, assume it will not repeat int MaskForNum (int num) { if (num==128) return 127; if (num==64) return 63; if (num==32) return 31; if (num==16) return 15; return 255; } int D_log2 (int num) { int c; c = 0; while (num>>=1) c++; return c; } //============================================================================= /* ================ D_CacheSurface ================ */ surfcache_t *D_CacheSurface (msurface_t *surface, int miplevel) { surfcache_t *cache; qboolean DoSurface; // // if the surface is animating or flashing, flush the cache // r_drawsurf.texture = R_TextureAnimation (surface->texinfo->texture); r_drawsurf.lightadj[0] = d_lightstylevalue[surface->styles[0]]; r_drawsurf.lightadj[1] = d_lightstylevalue[surface->styles[1]]; r_drawsurf.lightadj[2] = d_lightstylevalue[surface->styles[2]]; r_drawsurf.lightadj[3] = d_lightstylevalue[surface->styles[3]]; // // see if the cache holds apropriate data // cache = surface->cachespots[miplevel]; DoSurface = false; if (cache) { if (cache->drawflags & MLS_ABSLIGHT == MLS_ABSLIGHT && currententity->drawflags & MLS_ABSLIGHT != MLS_ABSLIGHT) { DoSurface = true; } else if (cache->abslight != currententity->abslight) { DoSurface = true; } } if (cache && !cache->dlight && surface->dlightframe != r_framecount && cache->texture == r_drawsurf.texture && cache->lightadj[0] == r_drawsurf.lightadj[0] && cache->lightadj[1] == r_drawsurf.lightadj[1] && cache->lightadj[2] == r_drawsurf.lightadj[2] && cache->lightadj[3] == r_drawsurf.lightadj[3] && !DoSurface) return cache; // // determine shape of surface // surfscale = 1.0 / (1<extents[0] >> miplevel; r_drawsurf.rowbytes = r_drawsurf.surfwidth; r_drawsurf.surfheight = surface->extents[1] >> miplevel; // // allocate memory if needed // if (!cache) // if a texture just animated, don't reallocate it { cache = D_SCAlloc (r_drawsurf.surfwidth, r_drawsurf.surfwidth * r_drawsurf.surfheight); surface->cachespots[miplevel] = cache; cache->owner = &surface->cachespots[miplevel]; cache->mipscale = surfscale; } cache->drawflags = currententity->drawflags; cache->abslight = currententity->abslight; if (surface->dlightframe == r_framecount) cache->dlight = 1; else cache->dlight = 0; r_drawsurf.surfdat = (pixel_t *)cache->data; cache->texture = r_drawsurf.texture; cache->lightadj[0] = r_drawsurf.lightadj[0]; cache->lightadj[1] = r_drawsurf.lightadj[1]; cache->lightadj[2] = r_drawsurf.lightadj[2]; cache->lightadj[3] = r_drawsurf.lightadj[3]; // // draw and light the surface texture // r_drawsurf.surf = surface; c_surf++; R_DrawSurface (); return surface->cachespots[miplevel]; } /* * $Log: /H2 Mission Pack/D_SURF.C $ * * 2 3/01/98 8:20p Jmonroe * removed the slow "quake" version of common functions * * 3 4/24/97 11:21p Rjohnson * You can now set the overall light level of a bmodel * * 2 2/17/97 3:38p Rjohnson * Id Updates */