gl_models.c

   1
   2 #include "quakedef.h"
   3 #include "r_shadow.h"
   4
   5 static texture_t r_aliasnotexture;
   6 static texture_t *R_FetchAliasSkin(const entity_render_t *ent, const surfmesh_t *mesh)
   7 {
   8         model_t *model = ent->model;
   9         if (model->numskins)
  10         {
  11                 int s = ent->skinnum;
  12                 if ((unsigned int)s >= (unsigned int)model->numskins)
  13                         s = 0;
  14                 if (model->skinscenes[s].framecount > 1)
  15                         s = model->skinscenes[s].firstframe + (unsigned int) (r_refdef.time * model->skinscenes[s].framerate) % model->skinscenes[s].framecount;
  16                 else
  17                         s = model->skinscenes[s].firstframe;
  18                 if (s >= mesh->num_skins)
  19                         s = 0;
  20                 return mesh->data_skins + s;
  21         }
  22         else
  23         {
  24                 memset(&r_aliasnotexture, 0, sizeof(r_aliasnotexture));
  25                 r_aliasnotexture.skin.base = r_texture_notexture;
  26                 return &r_aliasnotexture;
  27         }
  28 }
  29
  30 static void R_DrawAliasModelCallback (const void *calldata1, int calldata2)
  31 {
  32         int c, fbbase, fbpants, fbshirt, doglow;
  33         float tint[3], fog, ifog, colorscale, ambientcolor4f[4], diffusecolor[3], diffusenormal[3], colorbase[3], colorpants[3], colorshirt[3];
  34         float *vertex3f, *normal3f;
  35         vec3_t diff;
  36         qbyte *bcolor;
  37         rmeshstate_t m;
  38         const entity_render_t *ent = calldata1;
  39         msurface_t *surface = ent->model->data_surfaces + calldata2;
  40         surfmesh_t *mesh = surface->groupmesh;
  41         texture_t *texture;
  42
  43         R_Mesh_Matrix(&ent->matrix);
  44
  45         fog = 0;
  46         if (fogenabled)
  47         {
  48                 VectorSubtract(ent->origin, r_vieworigin, diff);
  49                 fog = DotProduct(diff,diff);
  50                 if (fog < 0.01f)
  51                         fog = 0.01f;
  52                 fog = exp(fogdensity/fog);
  53                 if (fog > 1)
  54                         fog = 1;
  55                 if (fog < 0.01f)
  56                         fog = 0;
  57                 // fog method: darken, additive fog
  58                 // 1. render model as normal, scaled by inverse of fog alpha (darkens it)
  59                 // 2. render fog as additive
  60         }
  61         ifog = 1 - fog;
  62
  63         VectorScale(ent->colormod, ifog, colorbase);
  64         VectorClear(colorpants);
  65         VectorClear(colorshirt);
  66         fbbase = ent->effects & EF_FULLBRIGHT;
  67         fbpants = fbbase;
  68         fbshirt = fbbase;
  69         if (ent->colormap >= 0)
  70         {
  71                 // 128-224 are backwards ranges
  72                 c = (ent->colormap & 0xF) << 4;c += (c >= 128 && c < 224) ? 4 : 12;
  73                 if (c >= 224)
  74                         fbpants = true;
  75                 bcolor = (qbyte *) (&palette_complete[c]);
  76                 colorpants[0] = colorbase[0] * bcolor[0] * (1.0f / 255.0f);
  77                 colorpants[1] = colorbase[1] * bcolor[1] * (1.0f / 255.0f);
  78                 colorpants[2] = colorbase[2] * bcolor[2] * (1.0f / 255.0f);
  79                 // 128-224 are backwards ranges
  80                 c = (ent->colormap & 0xF0);c += (c >= 128 && c < 224) ? 4 : 12;
  81                 if (c >= 224)
  82                         fbshirt = true;
  83                 bcolor = (qbyte *) (&palette_complete[c]);
  84                 colorshirt[0] = colorbase[0] * bcolor[0] * (1.0f / 255.0f);
  85                 colorshirt[1] = colorbase[1] * bcolor[1] * (1.0f / 255.0f);
  86                 colorshirt[2] = colorbase[2] * bcolor[2] * (1.0f / 255.0f);
  87         }
  88
  89         texture = R_FetchAliasSkin(ent, mesh);
  90
  91         if ((ent->effects & EF_ADDITIVE))
  92         {
  93                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
  94                 GL_DepthMask(false);
  95         }
  96         else if (texture->skin.fog || ent->alpha != 1.0)
  97         {
  98                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
  99                 GL_DepthMask(false);
 100         }
 101         else
 102         {
 103                 GL_BlendFunc(GL_ONE, GL_ZERO);
 104                 GL_DepthMask(true);
 105         }
 106         GL_DepthTest(!(ent->effects & EF_NODEPTHTEST));
 107         colorscale = 1.0f;
 108         if (ent->frameblend[0].frame == 0 && ent->frameblend[0].lerp == 1)
 109         {
 110                 vertex3f = mesh->data_vertex3f;
 111                 normal3f = mesh->data_normal3f;
 112         }
 113         else
 114         {
 115                 vertex3f = varray_vertex3f;
 116                 Mod_Alias_GetMesh_Vertex3f(ent->model, ent->frameblend, mesh, vertex3f);
 117                 normal3f = NULL;
 118         }
 119
 120         doglow = texture->skin.glow != NULL;
 121
 122         memset(&m, 0, sizeof(m));
 123         m.pointer_vertex = vertex3f;
 124         m.pointer_texcoord[0] = mesh->data_texcoordtexture2f;
 125         if (gl_combine.integer)
 126         {
 127                 colorscale *= 0.25f;
 128                 m.texrgbscale[0] = 4;
 129         }
 130
 131         m.tex[0] = R_GetTexture((ent->colormap >= 0 || !texture->skin.merged) ? texture->skin.base : texture->skin.merged);
 132         VectorScale(colorbase, colorscale, tint);
 133         m.pointer_color = NULL;
 134         if (fbbase)
 135                 GL_Color(tint[0], tint[1], tint[2], ent->alpha);
 136         else if (R_LightModel(ambientcolor4f, diffusecolor, diffusenormal, ent, tint[0], tint[1], tint[2], ent->alpha, false))
 137         {
 138                 m.pointer_color = varray_color4f;
 139                 if (normal3f == NULL)
 140                 {
 141                         normal3f = varray_normal3f;
 142                         Mod_BuildNormals(0, mesh->num_vertices, mesh->num_triangles, vertex3f, mesh->data_element3i, normal3f);
 143                 }
 144                 R_LightModel_CalcVertexColors(ambientcolor4f, diffusecolor, diffusenormal, mesh->num_vertices, vertex3f, normal3f, varray_color4f);
 145         }
 146         else
 147                 GL_Color(ambientcolor4f[0], ambientcolor4f[1], ambientcolor4f[2], ambientcolor4f[3]);
 148         if (gl_combine.integer && doglow)
 149         {
 150                 doglow = false;
 151                 m.tex[1] = R_GetTexture(texture->skin.glow);
 152                 m.pointer_texcoord[1] = mesh->data_texcoordtexture2f;
 153                 m.texcombinergb[1] = GL_ADD;
 154         }
 155         R_Mesh_State(&m);
 156         c_alias_polys += mesh->num_triangles;
 157         GL_LockArrays(0, mesh->num_vertices);
 158         R_Mesh_Draw(0, mesh->num_vertices, mesh->num_triangles, mesh->data_element3i);
 159         GL_LockArrays(0, 0);
 160         m.tex[1] = 0;
 161         m.pointer_texcoord[1] = NULL;
 162         m.texcombinergb[1] = 0;
 163
 164         VectorScale(colorpants, colorscale, tint);
 165         if (ent->colormap >= 0 && texture->skin.pants && VectorLength2(tint) >= 0.001)
 166         {
 167                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 168                 GL_DepthMask(false);
 169                 m.tex[0] = R_GetTexture(texture->skin.pants);
 170                 m.pointer_color = NULL;
 171                 if (fbpants)
 172                         GL_Color(tint[0], tint[1], tint[2], ent->alpha);
 173                 else if (R_LightModel(ambientcolor4f, diffusecolor, diffusenormal, ent, tint[0], tint[1], tint[2], ent->alpha, false))
 174                 {
 175                         m.pointer_color = varray_color4f;
 176                         if (normal3f == NULL)
 177                         {
 178                                 normal3f = varray_normal3f;
 179                                 Mod_BuildNormals(0, mesh->num_vertices, mesh->num_triangles, vertex3f, mesh->data_element3i, normal3f);
 180                         }
 181                         R_LightModel_CalcVertexColors(ambientcolor4f, diffusecolor, diffusenormal, mesh->num_vertices, vertex3f, normal3f, varray_color4f);
 182                 }
 183                 else
 184                         GL_Color(ambientcolor4f[0], ambientcolor4f[1], ambientcolor4f[2], ambientcolor4f[3]);
 185                 R_Mesh_State(&m);
 186                 c_alias_polys += mesh->num_triangles;
 187                 GL_LockArrays(0, mesh->num_vertices);
 188                 R_Mesh_Draw(0, mesh->num_vertices, mesh->num_triangles, mesh->data_element3i);
 189                 GL_LockArrays(0, 0);
 190         }
 191
 192         VectorScale(colorshirt, colorscale, tint);
 193         if (ent->colormap >= 0 && texture->skin.shirt && VectorLength2(tint) >= 0.001)
 194         {
 195                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 196                 GL_DepthMask(false);
 197                 m.tex[0] = R_GetTexture(texture->skin.shirt);
 198                 m.pointer_color = NULL;
 199                 if (fbshirt)
 200                         GL_Color(tint[0], tint[1], tint[2], ent->alpha);
 201                 else if (R_LightModel(ambientcolor4f, diffusecolor, diffusenormal, ent, tint[0], tint[1], tint[2], ent->alpha, false))
 202                 {
 203                         m.pointer_color = varray_color4f;
 204                         if (normal3f == NULL)
 205                         {
 206                                 normal3f = varray_normal3f;
 207                                 Mod_BuildNormals(0, mesh->num_vertices, mesh->num_triangles, vertex3f, mesh->data_element3i, normal3f);
 208                         }
 209                         R_LightModel_CalcVertexColors(ambientcolor4f, diffusecolor, diffusenormal, mesh->num_vertices, vertex3f, normal3f, varray_color4f);
 210                 }
 211                 else
 212                         GL_Color(ambientcolor4f[0], ambientcolor4f[1], ambientcolor4f[2], ambientcolor4f[3]);
 213                 R_Mesh_State(&m);
 214                 c_alias_polys += mesh->num_triangles;
 215                 GL_LockArrays(0, mesh->num_vertices);
 216                 R_Mesh_Draw(0, mesh->num_vertices, mesh->num_triangles, mesh->data_element3i);
 217                 GL_LockArrays(0, 0);
 218         }
 219
 220         colorscale = 1;
 221         m.texrgbscale[0] = 0;
 222         m.pointer_color = NULL;
 223
 224         if (doglow)
 225         {
 226                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 227                 GL_DepthMask(false);
 228                 m.tex[0] = R_GetTexture(texture->skin.glow);
 229                 GL_Color(1, 1, 1, ent->alpha);
 230                 R_Mesh_State(&m);
 231                 c_alias_polys += mesh->num_triangles;
 232                 GL_LockArrays(0, mesh->num_vertices);
 233                 R_Mesh_Draw(0, mesh->num_vertices, mesh->num_triangles, mesh->data_element3i);
 234                 GL_LockArrays(0, 0);
 235         }
 236
 237         if (fog > 0)
 238         {
 239                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 240                 GL_DepthMask(false);
 241                 m.tex[0] = R_GetTexture(texture->skin.fog);
 242                 GL_Color(fogcolor[0], fogcolor[1], fogcolor[2], fog * ent->alpha);
 243                 R_Mesh_State(&m);
 244                 c_alias_polys += mesh->num_triangles;
 245                 GL_LockArrays(0, mesh->num_vertices);
 246                 R_Mesh_Draw(0, mesh->num_vertices, mesh->num_triangles, mesh->data_element3i);
 247                 GL_LockArrays(0, 0);
 248         }
 249 }
 250
 251 void R_Model_Alias_Draw(entity_render_t *ent)
 252 {
 253         int surfacenum;
 254         msurface_t *surface;
 255         surfmesh_t *mesh;
 256         if (ent->alpha < (1.0f / 64.0f))
 257                 return; // basically completely transparent
 258
 259         c_models++;
 260
 261         for (surfacenum = 0, surface = ent->model->data_surfaces;surfacenum < ent->model->num_surfaces;surfacenum++, surface++)
 262         {
 263                 mesh = surface->groupmesh;
 264                 if (ent->effects & EF_ADDITIVE || ent->alpha != 1.0 || R_FetchAliasSkin(ent, mesh)->skin.fog)
 265                         R_MeshQueue_AddTransparent(ent->effects & EF_NODEPTHTEST ? r_vieworigin : ent->origin, R_DrawAliasModelCallback, ent, surfacenum);
 266                 else
 267                         R_DrawAliasModelCallback(ent, surfacenum);
 268         }
 269 }
 270
 271 void R_Model_Alias_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist, const vec3_t lightmins, const vec3_t lightmaxs)
 272 {
 273         int surfacenum;
 274         msurface_t *surface;
 275         surfmesh_t *mesh;
 276         texture_t *texture;
 277         float projectdistance, *vertex3f;
 278         if (!(ent->flags & RENDER_SHADOW))
 279                 return;
 280         // check the box in modelspace, it was already checked in worldspace
 281         if (!BoxesOverlap(ent->model->normalmins, ent->model->normalmaxs, lightmins, lightmaxs))
 282                 return;
 283         projectdistance = lightradius + ent->model->radius;// - sqrt(DotProduct(relativelightorigin, relativelightorigin));
 284         if (projectdistance > 0.1)
 285         {
 286                 for (surfacenum = 0, surface = ent->model->data_surfaces;surfacenum < ent->model->num_surfaces;surfacenum++, surface++)
 287                 {
 288                         mesh = surface->groupmesh;
 289                         texture = R_FetchAliasSkin(ent, mesh);
 290                         if (texture->skin.fog)
 291                                 continue;
 292                         if (ent->frameblend[0].frame == 0 && ent->frameblend[0].lerp == 1)
 293                                 vertex3f = mesh->data_vertex3f;
 294                         else
 295                         {
 296                                 vertex3f = varray_vertex3f;
 297                                 Mod_Alias_GetMesh_Vertex3f(ent->model, ent->frameblend, mesh, vertex3f);
 298                         }
 299                         // identify lit faces within the bounding box
 300                         R_Shadow_PrepareShadowMark(mesh->num_triangles);
 301                         R_Shadow_MarkVolumeFromBox(0, mesh->num_triangles, vertex3f, mesh->data_element3i, relativelightorigin, lightmins, lightmaxs, ent->model->normalmins, ent->model->normalmaxs);
 302                         R_Shadow_VolumeFromList(mesh->num_vertices, mesh->num_triangles, vertex3f, mesh->data_element3i, mesh->data_neighbor3i, relativelightorigin, projectdistance, numshadowmark, shadowmarklist);
 303                 }
 304         }
 305 }
 306
 307 void R_Model_Alias_DrawLight(entity_render_t *ent, float *lightcolor, int numsurfaces, const int *surfacelist)
 308 {
 309         int c;
 310         float fog, ifog, lightcolorbase[3], lightcolorpants[3], lightcolorshirt[3];
 311         float *vertex3f, *svector3f, *tvector3f, *normal3f;
 312         vec3_t diff;
 313         qbyte *bcolor;
 314         int surfacenum;
 315         msurface_t *surface;
 316         surfmesh_t *mesh;
 317         texture_t *texture;
 318
 319         fog = 0;
 320         if (fogenabled)
 321         {
 322                 VectorSubtract(ent->origin, r_vieworigin, diff);
 323                 fog = DotProduct(diff,diff);
 324                 if (fog < 0.01f)
 325                         fog = 0.01f;
 326                 fog = exp(fogdensity/fog);
 327                 if (fog > 1)
 328                         fog = 1;
 329                 if (fog < 0.01f)
 330                         fog = 0;
 331                 // fog method: darken, additive fog
 332                 // 1. render model as normal, scaled by inverse of fog alpha (darkens it)
 333                 // 2. render fog as additive
 334         }
 335         ifog = 1 - fog;
 336
 337         VectorScale(lightcolor, ifog, lightcolorbase);
 338         if (VectorLength2(lightcolorbase) < 0.001)
 339                 return;
 340         VectorClear(lightcolorpants);
 341         VectorClear(lightcolorshirt);
 342         if (ent->colormap >= 0)
 343         {
 344                 // 128-224 are backwards ranges
 345                 c = (ent->colormap & 0xF) << 4;c += (c >= 128 && c < 224) ? 4 : 12;
 346                 // fullbright passes were already taken care of, so skip them in realtime lighting passes
 347                 if (c < 224)
 348                 {
 349                         bcolor = (qbyte *) (&palette_complete[c]);
 350                         lightcolorpants[0] = lightcolorbase[0] * bcolor[0] * (1.0f / 255.0f);
 351                         lightcolorpants[1] = lightcolorbase[1] * bcolor[1] * (1.0f / 255.0f);
 352                         lightcolorpants[2] = lightcolorbase[2] * bcolor[2] * (1.0f / 255.0f);
 353                 }
 354                 // 128-224 are backwards ranges
 355                 c = (ent->colormap & 0xF0);c += (c >= 128 && c < 224) ? 4 : 12;
 356                 // fullbright passes were already taken care of, so skip them in realtime lighting passes
 357                 if (c < 224)
 358                 {
 359                         bcolor = (qbyte *) (&palette_complete[c]);
 360                         lightcolorshirt[0] = lightcolorbase[0] * bcolor[0] * (1.0f / 255.0f);
 361                         lightcolorshirt[1] = lightcolorbase[1] * bcolor[1] * (1.0f / 255.0f);
 362                         lightcolorshirt[2] = lightcolorbase[2] * bcolor[2] * (1.0f / 255.0f);
 363                 }
 364         }
 365
 366         for (surfacenum = 0, surface = ent->model->data_surfaces;surfacenum < ent->model->num_surfaces;surfacenum++, surface++)
 367         {
 368                 mesh = surface->groupmesh;
 369                 texture = R_FetchAliasSkin(ent, mesh);
 370                 // FIXME: transparent skins need to be lit during the transparent render
 371                 if (texture->skin.fog)
 372                         continue;
 373                 if (ent->frameblend[0].frame == 0 && ent->frameblend[0].lerp == 1)
 374                 {
 375                         vertex3f = mesh->data_vertex3f;
 376                         svector3f = mesh->data_svector3f;
 377                         tvector3f = mesh->data_tvector3f;
 378                         normal3f = mesh->data_normal3f;
 379                 }
 380                 else
 381                 {
 382                         vertex3f = varray_vertex3f;
 383                         svector3f = varray_svector3f;
 384                         tvector3f = varray_tvector3f;
 385                         normal3f = varray_normal3f;
 386                         Mod_Alias_GetMesh_Vertex3f(ent->model, ent->frameblend, mesh, vertex3f);
 387                         Mod_BuildTextureVectorsAndNormals(0, mesh->num_vertices, mesh->num_triangles, vertex3f, mesh->data_texcoordtexture2f, mesh->data_element3i, svector3f, tvector3f, normal3f);
 388                 }
 389                 c_alias_polys += mesh->num_triangles;
 390                 R_Shadow_RenderLighting(0, mesh->num_vertices, mesh->num_triangles, mesh->data_element3i, vertex3f, svector3f, tvector3f, normal3f, mesh->data_texcoordtexture2f, lightcolorbase, lightcolorpants, lightcolorshirt, (ent->colormap >= 0 || !texture->skin.merged) ? texture->skin.base : texture->skin.merged, ent->colormap >= 0 ? texture->skin.pants : 0, ent->colormap >= 0 ? texture->skin.shirt : 0, texture->skin.nmap, texture->skin.gloss);
 391         }
 392 }
 393