gl_models.c

   1
   2 #include "quakedef.h"
   3 #include "r_shadow.h"
   4
   5 void GL_Models_Init(void)
   6 {
   7 }
   8
   9 aliaslayer_t r_aliasnoskinlayers[2] = {{ALIASLAYER_DIFFUSE, NULL, NULL}, {ALIASLAYER_FOG | ALIASLAYER_FORCEDRAW_IF_FIRSTPASS, NULL, NULL}};
  10 aliasskin_t r_aliasnoskin = {0, 2, r_aliasnoskinlayers};
  11 aliasskin_t *R_FetchAliasSkin(const entity_render_t *ent, const aliasmesh_t *mesh)
  12 {
  13         model_t *model = ent->model;
  14         if (model->numskins)
  15         {
  16                 int s = ent->skinnum;
  17                 if ((unsigned int)s >= (unsigned int)model->numskins)
  18                         s = 0;
  19                 if (model->skinscenes[s].framecount > 1)
  20                         s = model->skinscenes[s].firstframe + (int) (r_refdef.time * model->skinscenes[s].framerate) % model->skinscenes[s].framecount;
  21                 else
  22                         s = model->skinscenes[s].firstframe;
  23                 if (s >= mesh->num_skins)
  24                         s = 0;
  25                 return mesh->data_skins + s;
  26         }
  27         else
  28         {
  29                 r_aliasnoskinlayers[0].texture = r_notexture;
  30                 return &r_aliasnoskin;
  31         }
  32 }
  33
  34 void R_DrawAliasModelCallback (const void *calldata1, int calldata2)
  35 {
  36         int c, fullbright, layernum, firstpass;
  37         float tint[3], fog, ifog, colorscale, ambientcolor4f[4], diffusecolor[3], diffusenormal[3];
  38         float *vertex3f, *normal3f;
  39         vec3_t diff;
  40         qbyte *bcolor;
  41         rmeshstate_t m;
  42         const entity_render_t *ent = calldata1;
  43         aliasmesh_t *mesh = ent->model->alias.aliasdata_meshes + calldata2;
  44         aliaslayer_t *layer;
  45         aliasskin_t *skin;
  46
  47         R_Mesh_Matrix(&ent->matrix);
  48
  49         fog = 0;
  50         if (fogenabled)
  51         {
  52                 VectorSubtract(ent->origin, r_vieworigin, diff);
  53                 fog = DotProduct(diff,diff);
  54                 if (fog < 0.01f)
  55                         fog = 0.01f;
  56                 fog = exp(fogdensity/fog);
  57                 if (fog > 1)
  58                         fog = 1;
  59                 if (fog < 0.01f)
  60                         fog = 0;
  61                 // fog method: darken, additive fog
  62                 // 1. render model as normal, scaled by inverse of fog alpha (darkens it)
  63                 // 2. render fog as additive
  64         }
  65         ifog = 1 - fog;
  66
  67         firstpass = true;
  68         skin = R_FetchAliasSkin(ent, mesh);
  69
  70         vertex3f = NULL;
  71         normal3f = NULL;
  72         for (layernum = 0, layer = skin->data_layers;layernum < skin->num_layers;layernum++, layer++)
  73         {
  74                 if (!(layer->flags & ALIASLAYER_FORCEDRAW_IF_FIRSTPASS) || !firstpass)
  75                 {
  76                         if (((layer->flags & ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED) && ent->colormap < 0)
  77                          || ((layer->flags & ALIASLAYER_NODRAW_IF_COLORMAPPED) && ent->colormap >= 0)
  78                          || ((layer->flags & ALIASLAYER_FOG) && !fogenabled)
  79                          ||  (layer->flags & ALIASLAYER_SPECULAR)
  80                          || ((layer->flags & ALIASLAYER_DIFFUSE) && (ent->flags & RENDER_LIGHT) && r_lightmapintensity <= 0 && !(ent->flags & RENDER_TRANSPARENT) && r_ambient.integer <= 0))
  81                                 continue;
  82                 }
  83                 if (!firstpass || (ent->effects & EF_ADDITIVE))
  84                 {
  85                         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
  86                         GL_DepthMask(false);
  87                 }
  88                 else if ((skin->flags & ALIASSKIN_TRANSPARENT) || ent->alpha != 1.0)
  89                 {
  90                         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
  91                         GL_DepthMask(false);
  92                 }
  93                 else
  94                 {
  95                         GL_BlendFunc(GL_ONE, GL_ZERO);
  96                         GL_DepthMask(true);
  97                 }
  98                 GL_DepthTest(!(ent->effects & EF_NODEPTHTEST));
  99                 firstpass = false;
 100                 colorscale = 1.0f;
 101
 102                 memset(&m, 0, sizeof(m));
 103                 if (layer->texture != NULL)
 104                 {
 105                         m.tex[0] = R_GetTexture(layer->texture);
 106                         m.pointer_texcoord[0] = mesh->data_texcoord2f;
 107                         if (gl_combine.integer && layer->flags & (ALIASLAYER_DIFFUSE | ALIASLAYER_SPECULAR))
 108                         {
 109                                 colorscale *= 0.25f;
 110                                 m.texrgbscale[0] = 4;
 111                         }
 112                 }
 113                 if (!vertex3f)
 114                 {
 115                         if (ent->frameblend[0].frame == 0 && ent->frameblend[0].lerp == 1)
 116                                 vertex3f = mesh->data_basevertex3f;
 117                         else
 118                         {
 119                                 vertex3f = varray_vertex3f;
 120                                 Mod_Alias_GetMesh_Vertex3f(ent->model, ent->frameblend, mesh, vertex3f);
 121                         }
 122                 }
 123                 m.pointer_vertex = vertex3f;
 124
 125                 c_alias_polys += mesh->num_triangles;
 126                 if (layer->flags & ALIASLAYER_FOG)
 127                 {
 128                         colorscale *= fog;
 129                         GL_Color(fogcolor[0] * colorscale, fogcolor[1] * colorscale, fogcolor[2] * colorscale, ent->alpha);
 130                 }
 131                 else
 132                 {
 133                         fullbright = !(layer->flags & ALIASLAYER_DIFFUSE) || !(ent->flags & RENDER_LIGHT);
 134                         if (layer->flags & (ALIASLAYER_COLORMAP_PANTS | ALIASLAYER_COLORMAP_SHIRT))
 135                         {
 136                                 // 128-224 are backwards ranges
 137                                 if (layer->flags & ALIASLAYER_COLORMAP_PANTS)
 138                                         c = (ent->colormap & 0xF) << 4;
 139                                 else //if (layer->flags & ALIASLAYER_COLORMAP_SHIRT)
 140                                         c = (ent->colormap & 0xF0);
 141                                 c += (c >= 128 && c < 224) ? 4 : 12;
 142                                 bcolor = (qbyte *) (&palette_complete[c]);
 143                                 fullbright = fullbright || c >= 224;
 144                                 VectorScale(bcolor, (1.0f / 255.0f), tint);
 145                         }
 146                         else
 147                                 tint[0] = tint[1] = tint[2] = 1;
 148                         tint[0] *= ent->colormod[0];
 149                         tint[1] *= ent->colormod[1];
 150                         tint[2] *= ent->colormod[2];
 151                         if (!fullbright && !(ent->flags & RENDER_TRANSPARENT))
 152                                 colorscale *= r_lightmapintensity;
 153                         colorscale *= ifog;
 154                         if (fullbright)
 155                                 GL_Color(tint[0] * colorscale, tint[1] * colorscale, tint[2] * colorscale, ent->alpha);
 156                         else if (R_LightModel(ambientcolor4f, diffusecolor, diffusenormal, ent, tint[0] * colorscale, tint[1] * colorscale, tint[2] * colorscale, ent->alpha, false))
 157                         {
 158                                 m.pointer_color = varray_color4f;
 159                                 if (normal3f == NULL)
 160                                 {
 161                                         if (ent->frameblend[0].frame == 0 && ent->frameblend[0].lerp == 1)
 162                                                 normal3f = mesh->data_basenormal3f;
 163                                         else
 164                                         {
 165                                                 normal3f = varray_normal3f;
 166                                                 Mod_BuildNormals(mesh->num_vertices, mesh->num_triangles, vertex3f, mesh->data_element3i, normal3f);
 167                                         }
 168                                 }
 169                                 R_LightModel_CalcVertexColors(ambientcolor4f, diffusecolor, diffusenormal, mesh->num_vertices, vertex3f, normal3f, varray_color4f);
 170                         }
 171                         else
 172                                 GL_Color(ambientcolor4f[0], ambientcolor4f[1], ambientcolor4f[2], ambientcolor4f[3]);
 173                 }
 174                 R_Mesh_State(&m);
 175                 GL_LockArrays(0, mesh->num_vertices);
 176                 R_Mesh_Draw(mesh->num_vertices, mesh->num_triangles, mesh->data_element3i);
 177                 GL_LockArrays(0, 0);
 178         }
 179 }
 180
 181 void R_Model_Alias_Draw(entity_render_t *ent)
 182 {
 183         int meshnum;
 184         aliasmesh_t *mesh;
 185         if (ent->alpha < (1.0f / 64.0f))
 186                 return; // basically completely transparent
 187
 188         c_models++;
 189
 190         for (meshnum = 0, mesh = ent->model->alias.aliasdata_meshes;meshnum < ent->model->alias.aliasnum_meshes;meshnum++, mesh++)
 191         {
 192                 if (ent->effects & EF_ADDITIVE || ent->alpha != 1.0 || R_FetchAliasSkin(ent, mesh)->flags & ALIASSKIN_TRANSPARENT)
 193                         R_MeshQueue_AddTransparent(ent->effects & EF_NODEPTHTEST ? r_vieworigin : ent->origin, R_DrawAliasModelCallback, ent, meshnum);
 194                 else
 195                         R_DrawAliasModelCallback(ent, meshnum);
 196         }
 197 }
 198
 199 void R_Model_Alias_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius)
 200 {
 201         int meshnum;
 202         vec3_t lightmins, lightmaxs;
 203         aliasmesh_t *mesh;
 204         aliasskin_t *skin;
 205         float projectdistance, *vertex3f;
 206         if (!(ent->flags & RENDER_SHADOW))
 207                 return;
 208         lightmins[0] = relativelightorigin[0] - lightradius;
 209         lightmins[1] = relativelightorigin[1] - lightradius;
 210         lightmins[2] = relativelightorigin[2] - lightradius;
 211         lightmaxs[0] = relativelightorigin[0] + lightradius;
 212         lightmaxs[1] = relativelightorigin[1] + lightradius;
 213         lightmaxs[2] = relativelightorigin[2] + lightradius;
 214         // check the box in modelspace, it was already checked in worldspace
 215         if (!BoxesOverlap(ent->model->normalmins, ent->model->normalmaxs, lightmins, lightmaxs))
 216                 return;
 217         projectdistance = lightradius + ent->model->radius;// - sqrt(DotProduct(relativelightorigin, relativelightorigin));
 218         if (projectdistance > 0.1)
 219         {
 220                 R_Mesh_Matrix(&ent->matrix);
 221                 for (meshnum = 0, mesh = ent->model->alias.aliasdata_meshes;meshnum < ent->model->alias.aliasnum_meshes;meshnum++, mesh++)
 222                 {
 223                         skin = R_FetchAliasSkin(ent, mesh);
 224                         if (skin->flags & ALIASSKIN_TRANSPARENT)
 225                                 continue;
 226                         if (ent->frameblend[0].frame == 0 && ent->frameblend[0].lerp == 1)
 227                                 vertex3f = mesh->data_basevertex3f;
 228                         else
 229                         {
 230                                 vertex3f = varray_vertex3f;
 231                                 Mod_Alias_GetMesh_Vertex3f(ent->model, ent->frameblend, mesh, vertex3f);
 232                         }
 233                         // identify lit faces within the bounding box
 234                         R_Shadow_PrepareShadowMark(mesh->num_triangles);
 235                         R_Shadow_MarkVolumeFromBox(0, mesh->num_triangles, vertex3f, mesh->data_element3i, relativelightorigin, lightmins, lightmaxs, ent->model->normalmins, ent->model->normalmaxs);
 236                         R_Shadow_VolumeFromList(mesh->num_vertices, mesh->num_triangles, vertex3f, mesh->data_element3i, mesh->data_neighbor3i, relativelightorigin, projectdistance, numshadowmark, shadowmarklist);
 237                 }
 238         }
 239 }
 240
 241 void R_Model_Alias_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltolight, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz, rtexture_t *lightcubemap, vec_t ambientscale, vec_t diffusescale, vec_t specularscale, int numsurfaces, const int *surfacelist)
 242 {
 243         int c, meshnum, layernum;
 244         float fog, ifog, lightcolor2[3], ambientscale2, diffusescale2, specularscale2;
 245         float *vertex3f, *svector3f, *tvector3f, *normal3f;
 246         vec3_t diff;
 247         qbyte *bcolor;
 248         aliasmesh_t *mesh;
 249         aliaslayer_t *layer;
 250         aliasskin_t *skin;
 251
 252         R_Mesh_Matrix(&ent->matrix);
 253
 254         fog = 0;
 255         if (fogenabled)
 256         {
 257                 VectorSubtract(ent->origin, r_vieworigin, diff);
 258                 fog = DotProduct(diff,diff);
 259                 if (fog < 0.01f)
 260                         fog = 0.01f;
 261                 fog = exp(fogdensity/fog);
 262                 if (fog > 1)
 263                         fog = 1;
 264                 if (fog < 0.01f)
 265                         fog = 0;
 266                 // fog method: darken, additive fog
 267                 // 1. render model as normal, scaled by inverse of fog alpha (darkens it)
 268                 // 2. render fog as additive
 269         }
 270         ifog = 1 - fog;
 271
 272         for (meshnum = 0, mesh = ent->model->alias.aliasdata_meshes;meshnum < ent->model->alias.aliasnum_meshes;meshnum++, mesh++)
 273         {
 274                 skin = R_FetchAliasSkin(ent, mesh);
 275                 // FIXME: transparent skins need to be lit during the transparent render
 276                 if (skin->flags & ALIASSKIN_TRANSPARENT)
 277                         continue;
 278                 vertex3f = NULL;
 279                 svector3f = NULL;
 280                 tvector3f = NULL;
 281                 normal3f = NULL;
 282                 for (layernum = 0, layer = skin->data_layers;layernum < skin->num_layers;layernum++, layer++)
 283                 {
 284                         if (!(layer->flags & (ALIASLAYER_DIFFUSE | ALIASLAYER_SPECULAR))
 285                          || ((layer->flags & ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED) && ent->colormap < 0)
 286                          || ((layer->flags & ALIASLAYER_NODRAW_IF_COLORMAPPED) && ent->colormap >= 0))
 287                                 continue;
 288                         lightcolor2[0] = lightcolor[0] * ifog;
 289                         lightcolor2[1] = lightcolor[1] * ifog;
 290                         lightcolor2[2] = lightcolor[2] * ifog;
 291                         ambientscale2 = 0;
 292                         diffusescale2 = 0;
 293                         specularscale2 = 0;
 294                         if (layer->flags & ALIASLAYER_SPECULAR)
 295                                 specularscale2 = specularscale;
 296                         if (layer->flags & ALIASLAYER_DIFFUSE)
 297                         {
 298                                 if (layer->flags & ALIASLAYER_COLORMAP_PANTS)
 299                                 {
 300                                         // 128-224 are backwards ranges
 301                                         c = (ent->colormap & 0xF) << 4;c += (c >= 128 && c < 224) ? 4 : 12;
 302                                         // fullbright passes were already taken care of, so skip them in realtime lighting passes
 303                                         if (c < 224)
 304                                         {
 305                                                 bcolor = (qbyte *) (&palette_complete[c]);
 306                                                 lightcolor2[0] *= bcolor[0] * (1.0f / 255.0f);
 307                                                 lightcolor2[1] *= bcolor[1] * (1.0f / 255.0f);
 308                                                 lightcolor2[2] *= bcolor[2] * (1.0f / 255.0f);
 309                                                 ambientscale2 = ambientscale;
 310                                                 diffusescale2 = diffusescale;
 311                                         }
 312                                 }
 313                                 else if (layer->flags & ALIASLAYER_COLORMAP_SHIRT)
 314                                 {
 315                                         // 128-224 are backwards ranges
 316                                         c = (ent->colormap & 0xF0);c += (c >= 128 && c < 224) ? 4 : 12;
 317                                         // fullbright passes were already taken care of, so skip them in realtime lighting passes
 318                                         if (c < 224)
 319                                         {
 320                                                 bcolor = (qbyte *) (&palette_complete[c]);
 321                                                 lightcolor2[0] *= bcolor[0] * (1.0f / 255.0f);
 322                                                 lightcolor2[1] *= bcolor[1] * (1.0f / 255.0f);
 323                                                 lightcolor2[2] *= bcolor[2] * (1.0f / 255.0f);
 324                                                 ambientscale2 = ambientscale;
 325                                                 diffusescale2 = diffusescale;
 326                                         }
 327                                 }
 328                                 else
 329                                 {
 330                                         ambientscale2 = ambientscale;
 331                                         diffusescale2 = diffusescale;
 332                                 }
 333                         }
 334                         if (!(ambientscale2 + diffusescale2 + specularscale2) || VectorLength2(lightcolor2) <= 0.01)
 335                                 continue;
 336                         c_alias_polys += mesh->num_triangles;
 337                         if (!vertex3f)
 338                         {
 339                                 if (ent->frameblend[0].frame == 0 && ent->frameblend[0].lerp == 1)
 340                                 {
 341                                         vertex3f = mesh->data_basevertex3f;
 342                                         svector3f = mesh->data_basesvector3f;
 343                                         tvector3f = mesh->data_basetvector3f;
 344                                         normal3f = mesh->data_basenormal3f;
 345                                 }
 346                                 else
 347                                 {
 348                                         vertex3f = varray_vertex3f;
 349                                         svector3f = varray_svector3f;
 350                                         tvector3f = varray_tvector3f;
 351                                         normal3f = varray_normal3f;
 352                                         Mod_Alias_GetMesh_Vertex3f(ent->model, ent->frameblend, mesh, vertex3f);
 353                                         Mod_BuildTextureVectorsAndNormals(mesh->num_vertices, mesh->num_triangles, vertex3f, mesh->data_texcoord2f, mesh->data_element3i, svector3f, tvector3f, normal3f);
 354                                 }
 355                         }
 356                         // TODO: make layer have ->gloss as well as ->texture, and merge specular layer for common non-colormapped case?
 357                         R_Shadow_RenderLighting(mesh->num_vertices, mesh->num_triangles, mesh->data_element3i, vertex3f, svector3f, tvector3f, normal3f, mesh->data_texcoord2f, relativelightorigin, relativeeyeorigin, lightcolor2, matrix_modeltolight, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, layer->texture, layer->nmap, layer->texture, lightcubemap, ambientscale2, diffusescale2, specularscale2);
 358                 }
 359         }
 360 }
 361