/* vulkan_lightmap.c surface-related refresh code Copyright (C) 1996-1997 Id Software, Inc. Copyright (C) 2000 Joseph Carter Copyright (C) 2021 Bill Currie This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to: Free Software Foundation, Inc. 59 Temple Place - Suite 330 Boston, MA 02111-1307, USA */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #ifdef HAVE_STRING_H # include #endif #ifdef HAVE_STRINGS_H # include #endif #include #include #include "QF/cvar.h" #include "QF/render.h" #include "QF/sys.h" #include "QF/Vulkan/qf_bsp.h" #include "QF/Vulkan/qf_lightmap.h" #include "QF/Vulkan/qf_main.h" #include "QF/Vulkan/scrap.h" #include "compat.h" #include "r_internal.h" #include "vid_vulkan.h" #define LUXEL_SIZE 4 static inline void add_dynamic_lights (msurface_t *surf, float *block) { unsigned lnum; int sd, td; float dist, rad, minlight; vec3_t impact, local, lightorigin; int smax, tmax; int s, t; mtexinfo_t *tex; plane_t *plane; smax = (surf->extents[0] >> 4) + 1; tmax = (surf->extents[1] >> 4) + 1; tex = surf->texinfo; plane = surf->plane; for (lnum = 0; lnum < r_maxdlights; lnum++) { if (!(surf->dlightbits[lnum / 32] & (1 << (lnum % 32)))) continue; // not lit by this light dlight_t *light = &r_dlights[lnum]; VectorSubtract (light->origin, currententity->origin, lightorigin); rad = light->radius; dist = DotProduct (lightorigin, plane->normal) - plane->dist; rad -= fabs (dist); minlight = light->minlight; if (rad < minlight) { continue; } VectorMultSub (light->origin, dist, plane->normal, impact); local[0] = DotProduct (impact, tex->vecs[0]) + tex->vecs[0][3]; local[1] = DotProduct (impact, tex->vecs[1]) + tex->vecs[1][3]; local[0] -= surf->texturemins[0]; local[1] -= surf->texturemins[1]; for (t = 0; t < tmax; t++) { td = local[1] - t * 16; if (td < 0) { td = -td; } for (s = 0; s < smax; s++) { sd = local[0] - s * 16; if (sd < 0) { sd = -sd; } if (sd > td) { dist = sd + (td >> 1); } else { dist = td + (sd >> 1); } if (dist < minlight) { float *out = block + (t * smax + s) * LUXEL_SIZE; float l = (rad - dist); VectorMultAdd (out, l, light->color, out); out[3] = 1; out += LUXEL_SIZE; } } } } } void Vulkan_BuildLightMap (mod_brush_t *brush, msurface_t *surf, vulkan_ctx_t *ctx) { bspctx_t *bctx = ctx->bsp_context; int smax, tmax, size; unsigned scale; int i; float *out, *block; surf->cached_dlight = (surf->dlightframe == r_framecount); smax = (surf->extents[0] >> 4) + 1; tmax = (surf->extents[1] >> 4) + 1; size = smax * tmax * LUXEL_SIZE; block = QFV_SubpicBatch (surf->lightpic, bctx->light_stage); // set to full bright if no light data if (!brush->lightdata) { out = block; while (size-- > 0) { *out++ = 1; } return; } // clear to no light memset (block, 0, size * sizeof(float)); // add all the lightmaps if (surf->samples) { byte *lightmap; lightmap = surf->samples; for (int maps = 0; maps < MAXLIGHTMAPS && surf->styles[maps] != 255; maps++) { scale = d_lightstylevalue[surf->styles[maps]]; surf->cached_light[maps] = scale; // 8.8 fraction out = block; for (i = 0; i < smax * tmax; i++) { *out++ += *lightmap++ * scale / 65536.0; *out++ += *lightmap++ * scale / 65536.0; *out++ += *lightmap++ * scale / 65536.0; out++; } } } // add all the dynamic lights if (surf->dlightframe == r_framecount) { add_dynamic_lights (surf, block); } } void Vulkan_CalcLightmaps (vulkan_ctx_t *ctx) { /* int i; for (i = 0; i < MAX_LIGHTMAPS; i++) { if (!gl_lightmap_polys[i]) continue; if (gl_lightmap_modified[i]) { qfglBindTexture (GL_TEXTURE_2D, gl_lightmap_textures + i); GL_UploadLightmap (i); gl_lightmap_modified[i] = false; } }*/ } static void vulkan_create_surf_lightmap (msurface_t *surf, vulkan_ctx_t *ctx) { bspctx_t *bctx = ctx->bsp_context; int smax, tmax; smax = (surf->extents[0] >> 4) + 1; tmax = (surf->extents[1] >> 4) + 1; surf->lightpic = QFV_ScrapSubpic (bctx->light_scrap, smax, tmax); if (!surf->lightpic) { Sys_Error ("FIXME taniwha is being lazy"); } } /* GL_BuildLightmaps Builds the lightmap texture with all the surfaces from all brush models */ void Vulkan_BuildLightmaps (model_t **models, int num_models, vulkan_ctx_t *ctx) { bspctx_t *bctx = ctx->bsp_context; int i, j; model_t *m; mod_brush_t *brush; QFV_ScrapClear (bctx->light_scrap); r_framecount = 1; // no dlightcache for (j = 1; j < num_models; j++) { m = models[j]; if (!m) break; if (m->path[0] == '*' || m->type != mod_brush) { // sub model surfaces are processed as part of the main model continue; } brush = &m->brush; // non-bsp models don't have surfaces. for (i = 0; i < brush->numsurfaces; i++) { msurface_t *surf = brush->surfaces + i; surf->lightpic = 0; // paranoia if (surf->flags & SURF_DRAWTURB) { continue; } if (surf->flags & SURF_DRAWSKY) { continue; } vulkan_create_surf_lightmap (surf, ctx); } } for (j = 1; j < num_models; j++) { m = models[j]; if (!m) { break; } if (m->path[0] == '*' || m->type != mod_brush) { // sub model surfaces are processed as part of the main model continue; } brush = &m->brush; // non-bsp models don't have surfaces. for (i = 0; i < brush->numsurfaces; i++) { msurface_t *surf = brush->surfaces + i; if (surf->lightpic) { Vulkan_BuildLightMap (brush, surf, ctx); } } } } VkImageView Vulkan_LightmapImageView (vulkan_ctx_t *ctx) { bspctx_t *bctx = ctx->bsp_context; return QFV_ScrapImageView (bctx->light_scrap); } void Vulkan_FlushLightmaps (vulkan_ctx_t *ctx) { bspctx_t *bctx = ctx->bsp_context; QFV_ScrapFlush (bctx->light_scrap); }