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) (cl.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         if (ent->frameblend[0].frame == 0 && ent->frameblend[0].lerp == 1)
  71         {
  72                 vertex3f = mesh->data_basevertex3f;
  73                 normal3f = mesh->data_basenormal3f;
  74         }
  75         else
  76         {
  77                 vertex3f = varray_vertex3f;
  78                 Mod_Alias_GetMesh_Vertex3f(ent->model, ent->frameblend, mesh, vertex3f);
  79                 normal3f = NULL;
  80         }
  81         for (layernum = 0, layer = skin->data_layers;layernum < skin->num_layers;layernum++, layer++)
  82         {
  83                 if (!(layer->flags & ALIASLAYER_FORCEDRAW_IF_FIRSTPASS) || !firstpass)
  84                 {
  85                         if (((layer->flags & ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED) && ent->colormap < 0)
  86                          || ((layer->flags & ALIASLAYER_NODRAW_IF_COLORMAPPED) && ent->colormap >= 0)
  87                          || ((layer->flags & ALIASLAYER_FOG) && !fogenabled)
  88                          ||  (layer->flags & ALIASLAYER_SPECULAR)
  89                          || ((layer->flags & ALIASLAYER_DIFFUSE) && (ent->flags & RENDER_LIGHT) && r_lightmapintensity <= 0 && !(ent->flags & RENDER_TRANSPARENT) && r_ambient.integer <= 0))
  90                                 continue;
  91                 }
  92                 if (!firstpass || (ent->effects & EF_ADDITIVE))
  93                 {
  94                         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
  95                         GL_DepthMask(false);
  96                 }
  97                 else if ((skin->flags & ALIASSKIN_TRANSPARENT) || ent->alpha != 1.0)
  98                 {
  99                         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 100                         GL_DepthMask(false);
 101                 }
 102                 else
 103                 {
 104                         GL_BlendFunc(GL_ONE, GL_ZERO);
 105                         GL_DepthMask(true);
 106                 }
 107                 GL_DepthTest(!(ent->effects & EF_NODEPTHTEST));
 108                 firstpass = false;
 109                 colorscale = 1.0f;
 110
 111                 memset(&m, 0, sizeof(m));
 112                 if (layer->texture != NULL)
 113                 {
 114                         m.tex[0] = R_GetTexture(layer->texture);
 115                         m.pointer_texcoord[0] = mesh->data_texcoord2f;
 116                         if (gl_combine.integer && layer->flags & (ALIASLAYER_DIFFUSE | ALIASLAYER_SPECULAR))
 117                         {
 118                                 colorscale *= 0.25f;
 119                                 m.texrgbscale[0] = 4;
 120                         }
 121                 }
 122                 m.pointer_vertex = vertex3f;
 123
 124                 c_alias_polys += mesh->num_triangles;
 125                 if (layer->flags & ALIASLAYER_FOG)
 126                 {
 127                         colorscale *= fog;
 128                         GL_Color(fogcolor[0] * colorscale, fogcolor[1] * colorscale, fogcolor[2] * colorscale, ent->alpha);
 129                 }
 130                 else
 131                 {
 132                         fullbright = !(layer->flags & ALIASLAYER_DIFFUSE) || !(ent->flags & RENDER_LIGHT);
 133                         if (layer->flags & (ALIASLAYER_COLORMAP_PANTS | ALIASLAYER_COLORMAP_SHIRT))
 134                         {
 135                                 // 128-224 are backwards ranges
 136                                 if (layer->flags & ALIASLAYER_COLORMAP_PANTS)
 137                                         c = (ent->colormap & 0xF) << 4;
 138                                 else //if (layer->flags & ALIASLAYER_COLORMAP_SHIRT)
 139                                         c = (ent->colormap & 0xF0);
 140                                 c += (c >= 128 && c < 224) ? 4 : 12;
 141                                 bcolor = (qbyte *) (&palette_complete[c]);
 142                                 fullbright = fullbright || c >= 224;
 143                                 VectorScale(bcolor, (1.0f / 255.0f), tint);
 144                         }
 145                         else
 146                                 tint[0] = tint[1] = tint[2] = 1;
 147                         if (!fullbright && !(ent->flags & RENDER_TRANSPARENT))
 148                                 colorscale *= r_lightmapintensity;
 149                         colorscale *= ifog;
 150                         if (fullbright)
 151                                 GL_Color(tint[0] * colorscale, tint[1] * colorscale, tint[2] * colorscale, ent->alpha);
 152                         else if (R_LightModel(ambientcolor4f, diffusecolor, diffusenormal, ent, tint[0] * colorscale, tint[1] * colorscale, tint[2] * colorscale, ent->alpha, false))
 153                         {
 154                                 m.pointer_color = varray_color4f;
 155                                 if (normal3f == NULL)
 156                                 {
 157                                         normal3f = varray_normal3f;
 158                                         Mod_BuildNormals(mesh->num_vertices, mesh->num_triangles, vertex3f, mesh->data_element3i, normal3f);
 159                                 }
 160                                 R_LightModel_CalcVertexColors(ambientcolor4f, diffusecolor, diffusenormal, mesh->num_vertices, vertex3f, normal3f, varray_color4f);
 161                         }
 162                         else
 163                                 GL_Color(ambientcolor4f[0], ambientcolor4f[1], ambientcolor4f[2], ambientcolor4f[3]);
 164                 }
 165                 R_Mesh_State(&m);
 166                 GL_LockArrays(0, mesh->num_vertices);
 167                 R_Mesh_Draw(mesh->num_vertices, mesh->num_triangles, mesh->data_element3i);
 168                 GL_LockArrays(0, 0);
 169         }
 170 }
 171
 172 void R_Model_Alias_Draw(entity_render_t *ent)
 173 {
 174         int meshnum;
 175         aliasmesh_t *mesh;
 176         if (ent->alpha < (1.0f / 64.0f))
 177                 return; // basically completely transparent
 178
 179         c_models++;
 180
 181         for (meshnum = 0, mesh = ent->model->alias.aliasdata_meshes;meshnum < ent->model->alias.aliasnum_meshes;meshnum++, mesh++)
 182         {
 183                 if (ent->effects & EF_ADDITIVE || ent->alpha != 1.0 || R_FetchAliasSkin(ent, mesh)->flags & ALIASSKIN_TRANSPARENT)
 184                         R_MeshQueue_AddTransparent(ent->effects & EF_NODEPTHTEST ? r_vieworigin : ent->origin, R_DrawAliasModelCallback, ent, meshnum);
 185                 else
 186                         R_DrawAliasModelCallback(ent, meshnum);
 187         }
 188 }
 189
 190 void R_Model_Alias_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius)
 191 {
 192         int meshnum;
 193         vec3_t lightmins, lightmaxs;
 194         aliasmesh_t *mesh;
 195         aliasskin_t *skin;
 196         float projectdistance, *vertex3f;
 197         if (!(ent->flags & RENDER_SHADOW))
 198                 return;
 199         lightmins[0] = relativelightorigin[0] - lightradius;
 200         lightmins[1] = relativelightorigin[1] - lightradius;
 201         lightmins[2] = relativelightorigin[2] - lightradius;
 202         lightmaxs[0] = relativelightorigin[0] + lightradius;
 203         lightmaxs[1] = relativelightorigin[1] + lightradius;
 204         lightmaxs[2] = relativelightorigin[2] + lightradius;
 205         // check the box in modelspace, it was already checked in worldspace
 206         if (!BoxesOverlap(ent->model->normalmins, ent->model->normalmaxs, lightmins, lightmaxs))
 207                 return;
 208         projectdistance = lightradius + ent->model->radius;// - sqrt(DotProduct(relativelightorigin, relativelightorigin));
 209         if (projectdistance > 0.1)
 210         {
 211                 R_Mesh_Matrix(&ent->matrix);
 212                 for (meshnum = 0, mesh = ent->model->alias.aliasdata_meshes;meshnum < ent->model->alias.aliasnum_meshes;meshnum++, mesh++)
 213                 {
 214                         skin = R_FetchAliasSkin(ent, mesh);
 215                         if (skin->flags & ALIASSKIN_TRANSPARENT)
 216                                 continue;
 217                         if (ent->frameblend[0].frame == 0 && ent->frameblend[0].lerp == 1)
 218                                 vertex3f = mesh->data_basevertex3f;
 219                         else
 220                         {
 221                                 vertex3f = varray_vertex3f;
 222                                 Mod_Alias_GetMesh_Vertex3f(ent->model, ent->frameblend, mesh, vertex3f);
 223                         }
 224                         // identify lit faces within the bounding box
 225                         R_Shadow_PrepareShadowMark(mesh->num_triangles);
 226                         R_Shadow_MarkVolumeFromBox(0, mesh->num_triangles, vertex3f, mesh->data_element3i, relativelightorigin, lightmins, lightmaxs, ent->model->normalmins, ent->model->normalmaxs);
 227                         R_Shadow_VolumeFromList(mesh->num_vertices, mesh->num_triangles, vertex3f, mesh->data_element3i, mesh->data_neighbor3i, relativelightorigin, projectdistance, numshadowmark, shadowmarklist);
 228                 }
 229         }
 230 }
 231
 232 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)
 233 {
 234         int c, meshnum, layernum;
 235         float fog, ifog, lightcolor2[3];
 236         float *vertex3f, *svector3f, *tvector3f, *normal3f;
 237         vec3_t diff;
 238         qbyte *bcolor;
 239         aliasmesh_t *mesh;
 240         aliaslayer_t *layer;
 241         aliasskin_t *skin;
 242
 243         R_Mesh_Matrix(&ent->matrix);
 244
 245         fog = 0;
 246         if (fogenabled)
 247         {
 248                 VectorSubtract(ent->origin, r_vieworigin, diff);
 249                 fog = DotProduct(diff,diff);
 250                 if (fog < 0.01f)
 251                         fog = 0.01f;
 252                 fog = exp(fogdensity/fog);
 253                 if (fog > 1)
 254                         fog = 1;
 255                 if (fog < 0.01f)
 256                         fog = 0;
 257                 // fog method: darken, additive fog
 258                 // 1. render model as normal, scaled by inverse of fog alpha (darkens it)
 259                 // 2. render fog as additive
 260         }
 261         ifog = 1 - fog;
 262
 263         for (meshnum = 0, mesh = ent->model->alias.aliasdata_meshes;meshnum < ent->model->alias.aliasnum_meshes;meshnum++, mesh++)
 264         {
 265                 skin = R_FetchAliasSkin(ent, mesh);
 266                 // FIXME: transparent skins need to be lit during the transparent render
 267                 if (skin->flags & ALIASSKIN_TRANSPARENT)
 268                         continue;
 269                 if (ent->frameblend[0].frame == 0 && ent->frameblend[0].lerp == 1)
 270                 {
 271                         vertex3f = mesh->data_basevertex3f;
 272                         svector3f = mesh->data_basesvector3f;
 273                         tvector3f = mesh->data_basetvector3f;
 274                         normal3f = mesh->data_basenormal3f;
 275                 }
 276                 else
 277                 {
 278                         vertex3f = varray_vertex3f;
 279                         svector3f = varray_svector3f;
 280                         tvector3f = varray_tvector3f;
 281                         normal3f = varray_normal3f;
 282                         Mod_Alias_GetMesh_Vertex3f(ent->model, ent->frameblend, mesh, vertex3f);
 283                         Mod_BuildTextureVectorsAndNormals(mesh->num_vertices, mesh->num_triangles, vertex3f, mesh->data_texcoord2f, mesh->data_element3i, svector3f, tvector3f, normal3f);
 284                 }
 285                 for (layernum = 0, layer = skin->data_layers;layernum < skin->num_layers;layernum++, layer++)
 286                 {
 287                         if (!(layer->flags & (ALIASLAYER_DIFFUSE | ALIASLAYER_SPECULAR))
 288                          || ((layer->flags & ALIASLAYER_NODRAW_IF_NOTCOLORMAPPED) && ent->colormap < 0)
 289                          || ((layer->flags & ALIASLAYER_NODRAW_IF_COLORMAPPED) && ent->colormap >= 0))
 290                                 continue;
 291                         lightcolor2[0] = lightcolor[0] * ifog;
 292                         lightcolor2[1] = lightcolor[1] * ifog;
 293                         lightcolor2[2] = lightcolor[2] * ifog;
 294                         if (layer->flags & ALIASLAYER_SPECULAR)
 295                         {
 296                                 c_alias_polys += mesh->num_triangles;
 297                                 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, LIGHTING_SPECULAR);
 298                         }
 299                         else if (layer->flags & ALIASLAYER_DIFFUSE)
 300                         {
 301                                 if (layer->flags & ALIASLAYER_COLORMAP_PANTS)
 302                                 {
 303                                         // 128-224 are backwards ranges
 304                                         c = (ent->colormap & 0xF) << 4;c += (c >= 128 && c < 224) ? 4 : 12;
 305                                         // fullbright passes were already taken care of, so skip them in realtime lighting passes
 306                                         if (c >= 224)
 307                                                 continue;
 308                                         bcolor = (qbyte *) (&palette_complete[c]);
 309                                         lightcolor2[0] *= bcolor[0] * (1.0f / 255.0f);
 310                                         lightcolor2[1] *= bcolor[1] * (1.0f / 255.0f);
 311                                         lightcolor2[2] *= bcolor[2] * (1.0f / 255.0f);
 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                                                 continue;
 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                                 }
 325                                 c_alias_polys += mesh->num_triangles;
 326                                 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, LIGHTING_DIFFUSE);
 327                         }
 328                 }
 329         }
 330 }
 331