-void R_Model_Alias_DrawFakeShadow (entity_render_t *ent)
-{
- int i, meshnum;
- aliasmesh_t *mesh;
- aliasskin_t *skin;
- rmeshstate_t m;
- float *v, plane[4], dist, projection[3], floororigin[3], surfnormal[3], lightdirection[3], v2[3];
- rcachearrayrequest_t request;
-
- if ((ent->effects & EF_ADDITIVE) || ent->alpha < 1)
- return;
-
- lightdirection[0] = 0.5;
- lightdirection[1] = 0.2;
- lightdirection[2] = -1;
- VectorNormalizeFast(lightdirection);
-
- VectorMA(ent->origin, 65536.0f, lightdirection, v2);
- if (CL_TraceLine(ent->origin, v2, floororigin, surfnormal, 0, false, NULL) == 1)
- return;
-
- R_Mesh_Matrix(&ent->matrix);
-
- memset(&m, 0, sizeof(m));
- m.blendfunc1 = GL_SRC_ALPHA;
- m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
- if (gl_mesh_copyarrays.integer)
- R_Mesh_State(&m);
- GL_Color(0, 0, 0, 0.5);
-
- // put a light direction in the entity's coordinate space
- Matrix4x4_Transform3x3(&ent->inversematrix, lightdirection, projection);
- VectorNormalizeFast(projection);
-
- // put the plane's normal in the entity's coordinate space
- Matrix4x4_Transform3x3(&ent->inversematrix, surfnormal, plane);
- VectorNormalizeFast(plane);
-
- // put the plane's distance in the entity's coordinate space
- VectorSubtract(floororigin, ent->origin, floororigin);
- plane[3] = DotProduct(floororigin, surfnormal) + 2;
-
- dist = -1.0f / DotProduct(projection, plane);
- VectorScale(projection, dist, projection);
- memset(&request, 0, sizeof(request));
- for (meshnum = 0, mesh = ent->model->aliasdata_meshes;meshnum < ent->model->aliasnum_meshes;meshnum++)
- {
- skin = R_FetchAliasSkin(ent, mesh);
- if (skin->flags & ALIASSKIN_TRANSPARENT)
- continue;
- if (gl_mesh_copyarrays.integer)
- {
- R_Mesh_GetSpace(mesh->num_vertices);
- R_Model_Alias_GetMesh_Array3f(ent, mesh, MODELARRAY_VERTEX, varray_vertex3f);
- for (i = 0, v = varray_vertex3f;i < mesh->num_vertices;i++, v += 3)
- {
- dist = DotProduct(v, plane) - plane[3];
- if (dist > 0)
- VectorMA(v, dist, projection, v);
- }
- }
- else
- {
- request.data_size = mesh->num_vertices * sizeof(float[3]);
- request.id_pointer1 = mesh;
- request.id_number1 = CRC_Block((void *)&ent->matrix, sizeof(ent->matrix));
- request.id_number2 = CRC_Block((void *)&plane, sizeof(plane));
- request.id_number3 = CRC_Block((void *)&ent->frameblend, sizeof(ent->frameblend));
- m.pointervertexcount = mesh->num_vertices;
- if (R_Mesh_CacheArray(&request))
- {
- R_Model_Alias_GetMesh_Array3f(ent, mesh, MODELARRAY_VERTEX, request.data);
- for (i = 0, v = request.data;i < mesh->num_vertices;i++, v += 3)
- {
- dist = DotProduct(v, plane) - plane[3];
- if (dist > 0)
- VectorMA(v, dist, projection, v);
- }
- }
- m.pointer_vertex = request.data;
- R_Mesh_State(&m);
- }
- c_alias_polys += mesh->num_triangles;
- R_Mesh_Draw(mesh->num_vertices, mesh->num_triangles, mesh->data_element3i);
- }
-}
-