/**
* @brief Reorders all surfaces arrays for the specified model, grouping the surface
* pointers by texture. This dramatically reduces glBindTexture calls.
*/
static void R_SortSurfacesArrays (const model_t *mod)
{
const mBspSurface_t *surf, *s;
int i, ns;
/* resolve the start surface and total surface count */
if (mod->type == mod_bsp) { /* world model */
s = mod->bsp.surfaces;
ns = mod->bsp.numsurfaces;
} else { /* submodels */
s = &mod->bsp.surfaces[mod->bsp.firstmodelsurface];
ns = mod->bsp.nummodelsurfaces;
}
OBJZERO(r_sorted_surfaces);
/* allocate the per-texture surfaces arrays and determine counts */
for (i = 0, surf = s; i < ns; i++, surf++) {
mBspSurfaces_t *surfs = r_sorted_surfaces[surf->texinfo->image->texnum];
if (!surfs) { /* allocate it */
surfs = (mBspSurfaces_t *)Mem_PoolAlloc(sizeof(*surfs), vid_modelPool, 0);
r_sorted_surfaces[surf->texinfo->image->texnum] = surfs;
}
surfs->count++;
}
/* allocate the surfaces pointers based on counts */
for (i = 0; i < r_numImages; i++) {
mBspSurfaces_t *surfs = r_sorted_surfaces[r_images[i].texnum];
if (surfs) {
surfs->surfaces = (mBspSurface_t **)Mem_PoolAlloc(sizeof(mBspSurface_t *) * surfs->count, vid_modelPool, 0);
surfs->count = 0;
}
}
/* sort the model's surfaces arrays into the per-texture arrays */
for (i = 0; i < NUM_SURFACES_ARRAYS; i++) {
if (mod->bsp.sorted_surfaces[i]->count) {
R_SortSurfacesArrays_(mod->bsp.sorted_surfaces[i]);
Com_DPrintf(DEBUG_RENDERER, "%i: #%i surfaces\n", i, mod->bsp.sorted_surfaces[i]->count);
}
}
/* free the per-texture surfaces arrays */
for (i = 0; i < r_numImages; i++) {
mBspSurfaces_t *surfs = r_sorted_surfaces[r_images[i].texnum];
if (surfs) {
if (surfs->surfaces)
Mem_Free(surfs->surfaces);
Mem_Free(surfs);
}
}
}
/**
* @brief Reorders all surfaces arrays for the specified model, grouping the surface
* pointers by texture. This dramatically reduces glBindTexture calls.
*/
static void R_SortSurfacesArrays (const model_t *mod)
{
const mBspSurface_t *surf, *s;
int i, ns;
mBspSurfaces_t **r_sorted_surfaces = Mem_AllocTypeN(mBspSurfaces_t *, r_numImages);
/* resolve the start surface and total surface count */
s = &mod->bsp.surfaces[mod->bsp.firstmodelsurface];
ns = mod->bsp.nummodelsurfaces;
/* allocate the per-texture surfaces arrays and determine counts */
for (i = 0, surf = s; i < ns; i++, surf++) {
int index = R_GetImageIndex(surf->texinfo->image);
mBspSurfaces_t *surfs = r_sorted_surfaces[index];
if (!surfs) { /* allocate it */
surfs = Mem_PoolAllocType(mBspSurfaces_t, vid_modelPool);
r_sorted_surfaces[index] = surfs;
}
surfs->count++;
}
/* allocate the surfaces pointers based on counts */
for (i = 0; i < r_numImages; i++) {
mBspSurfaces_t *surfs = r_sorted_surfaces[i];
if (surfs) {
surfs->surfaces = Mem_PoolAllocTypeN(mBspSurface_t*, surfs->count, vid_modelPool);
surfs->count = 0;
}
}
/* sort the model's surfaces arrays into the per-texture arrays */
for (i = 0; i < NUM_SURFACES_ARRAYS; i++) {
if (mod->bsp.sorted_surfaces[i]->count) {
R_SortSurfacesArrays_(mod->bsp.sorted_surfaces[i], r_sorted_surfaces);
Com_DPrintf(DEBUG_RENDERER, "%i: #%i surfaces\n", i, mod->bsp.sorted_surfaces[i]->count);
}
}
/* free the per-texture surfaces arrays */
for (i = 0; i < r_numImages; i++) {
mBspSurfaces_t *surfs = r_sorted_surfaces[i];
if (surfs) {
Mem_Free(surfs->surfaces);
Mem_Free(surfs);
}
}
Mem_Free(r_sorted_surfaces);
}