neo/renderer/Model_sprite.cpp

   1 /*
   2 ===========================================================================
   3
   4 Doom 3 GPL Source Code
   5 Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
   6
   7 This file is part of the Doom 3 GPL Source Code (?Doom 3 Source Code?).
   8
   9 Doom 3 Source Code is free software: you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation, either version 3 of the License, or
  12 (at your option) any later version.
  13
  14 Doom 3 Source Code is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with Doom 3 Source Code.  If not, see <http://www.gnu.org/licenses/>.
  21
  22 In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code.  If not, please request a copy in writing from id Software at the address below.
  23
  24 If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
  25
  26 ===========================================================================
  27 */
  28
  29 #include "../idlib/precompiled.h"
  30 #pragma hdrstop
  31
  32 #include "tr_local.h"
  33 #include "Model_local.h"
  34
  35
  36 /*
  37
  38 A simple sprite model that always faces the view axis.
  39
  40 */
  41
  42 static const char *sprite_SnapshotName = "_sprite_Snapshot_";
  43
  44 /*
  45 ===============
  46 idRenderModelBeam::IsDynamicModel
  47 ===============
  48 */
  49 dynamicModel_t idRenderModelSprite::IsDynamicModel() const {
  50         return DM_CONTINUOUS;
  51 }
  52
  53 /*
  54 ===============
  55 idRenderModelBeam::IsLoaded
  56 ===============
  57 */
  58 bool idRenderModelSprite::IsLoaded() const {
  59         return true;
  60 }
  61
  62 /*
  63 ===============
  64 idRenderModelSprite::InstantiateDynamicModel
  65 ===============
  66 */
  67 idRenderModel * idRenderModelSprite::InstantiateDynamicModel( const struct renderEntity_s *renderEntity, const struct viewDef_s *viewDef, idRenderModel *cachedModel ) {
  68         idRenderModelStatic *staticModel;
  69         srfTriangles_t *tri;
  70         modelSurface_t surf;
  71
  72         if ( cachedModel && !r_useCachedDynamicModels.GetBool() ) {
  73                 delete cachedModel;
  74                 cachedModel = NULL;
  75         }
  76
  77         if ( renderEntity == NULL || viewDef == NULL ) {
  78                 delete cachedModel;
  79                 return NULL;
  80         }
  81
  82         if ( cachedModel != NULL ) {
  83
  84                 assert( dynamic_cast<idRenderModelStatic *>( cachedModel ) != NULL );
  85                 assert( idStr::Icmp( cachedModel->Name(), sprite_SnapshotName ) == 0 );
  86
  87                 staticModel = static_cast<idRenderModelStatic *>( cachedModel );
  88                 surf = *staticModel->Surface( 0 );
  89                 tri = surf.geometry;
  90
  91         } else {
  92
  93                 staticModel = new idRenderModelStatic;
  94                 staticModel->InitEmpty( sprite_SnapshotName );
  95
  96                 tri = R_AllocStaticTriSurf();
  97                 R_AllocStaticTriSurfVerts( tri, 4 );
  98                 R_AllocStaticTriSurfIndexes( tri, 6 );
  99
 100                 tri->verts[ 0 ].Clear();
 101                 tri->verts[ 0 ].normal.Set( 1.0f, 0.0f, 0.0f );
 102                 tri->verts[ 0 ].tangents[0].Set( 0.0f, 1.0f, 0.0f );
 103                 tri->verts[ 0 ].tangents[1].Set( 0.0f, 0.0f, 1.0f );
 104                 tri->verts[ 0 ].st[ 0 ] = 0.0f;
 105                 tri->verts[ 0 ].st[ 1 ] = 0.0f;
 106
 107                 tri->verts[ 1 ].Clear();
 108                 tri->verts[ 1 ].normal.Set( 1.0f, 0.0f, 0.0f );
 109                 tri->verts[ 1 ].tangents[0].Set( 0.0f, 1.0f, 0.0f );
 110                 tri->verts[ 1 ].tangents[1].Set( 0.0f, 0.0f, 1.0f );
 111                 tri->verts[ 1 ].st[ 0 ] = 1.0f;
 112                 tri->verts[ 1 ].st[ 1 ] = 0.0f;
 113
 114                 tri->verts[ 2 ].Clear();
 115                 tri->verts[ 2 ].normal.Set( 1.0f, 0.0f, 0.0f );
 116                 tri->verts[ 2 ].tangents[0].Set( 0.0f, 1.0f, 0.0f );
 117                 tri->verts[ 2 ].tangents[1].Set( 0.0f, 0.0f, 1.0f );
 118                 tri->verts[ 2 ].st[ 0 ] = 1.0f;
 119                 tri->verts[ 2 ].st[ 1 ] = 1.0f;
 120
 121                 tri->verts[ 3 ].Clear();
 122                 tri->verts[ 3 ].normal.Set( 1.0f, 0.0f, 0.0f );
 123                 tri->verts[ 3 ].tangents[0].Set( 0.0f, 1.0f, 0.0f );
 124                 tri->verts[ 3 ].tangents[1].Set( 0.0f, 0.0f, 1.0f );
 125                 tri->verts[ 3 ].st[ 0 ] = 0.0f;
 126                 tri->verts[ 3 ].st[ 1 ] = 1.0f;
 127
 128                 tri->indexes[ 0 ] = 0;
 129                 tri->indexes[ 1 ] = 1;
 130                 tri->indexes[ 2 ] = 3;
 131                 tri->indexes[ 3 ] = 1;
 132                 tri->indexes[ 4 ] = 2;
 133                 tri->indexes[ 5 ] = 3;
 134
 135                 tri->numVerts = 4;
 136                 tri->numIndexes = 6;
 137
 138                 surf.geometry = tri;
 139                 surf.id = 0;
 140                 surf.shader = tr.defaultMaterial;
 141                 staticModel->AddSurface( surf );
 142         }
 143
 144         int     red                     = idMath::FtoiFast( renderEntity->shaderParms[ SHADERPARM_RED ] * 255.0f );
 145         int green               = idMath::FtoiFast( renderEntity->shaderParms[ SHADERPARM_GREEN ] * 255.0f );
 146         int     blue            = idMath::FtoiFast( renderEntity->shaderParms[ SHADERPARM_BLUE ] * 255.0f );
 147         int     alpha           = idMath::FtoiFast( renderEntity->shaderParms[ SHADERPARM_ALPHA ] * 255.0f );
 148
 149         idVec3 right    = idVec3( 0.0f, renderEntity->shaderParms[ SHADERPARM_SPRITE_WIDTH ] * 0.5f, 0.0f );
 150         idVec3 up               = idVec3( 0.0f, 0.0f, renderEntity->shaderParms[ SHADERPARM_SPRITE_HEIGHT ] * 0.5f );
 151
 152         tri->verts[ 0 ].xyz = up + right;
 153         tri->verts[ 0 ].color[ 0 ] = red;
 154         tri->verts[ 0 ].color[ 1 ] = green;
 155         tri->verts[ 0 ].color[ 2 ] = blue;
 156         tri->verts[ 0 ].color[ 3 ] = alpha;
 157
 158         tri->verts[ 1 ].xyz = up - right;
 159         tri->verts[ 1 ].color[ 0 ] = red;
 160         tri->verts[ 1 ].color[ 1 ] = green;
 161         tri->verts[ 1 ].color[ 2 ] = blue;
 162         tri->verts[ 1 ].color[ 3 ] = alpha;
 163
 164         tri->verts[ 2 ].xyz = - right - up;
 165         tri->verts[ 2 ].color[ 0 ] = red;
 166         tri->verts[ 2 ].color[ 1 ] = green;
 167         tri->verts[ 2 ].color[ 2 ] = blue;
 168         tri->verts[ 2 ].color[ 3 ] = alpha;
 169
 170         tri->verts[ 3 ].xyz = right - up;
 171         tri->verts[ 3 ].color[ 0 ] = red;
 172         tri->verts[ 3 ].color[ 1 ] = green;
 173         tri->verts[ 3 ].color[ 2 ] = blue;
 174         tri->verts[ 3 ].color[ 3 ] = alpha;
 175
 176         R_BoundTriSurf( tri );
 177
 178         staticModel->bounds = tri->bounds;
 179
 180         return staticModel;
 181 }
 182
 183 /*
 184 ===============
 185 idRenderModelSprite::Bounds
 186 ===============
 187 */
 188 idBounds idRenderModelSprite::Bounds( const struct renderEntity_s *renderEntity ) const {
 189         idBounds b;
 190
 191         b.Zero();
 192         if ( renderEntity == NULL ) {
 193                 b.ExpandSelf( 8.0f );
 194         } else {
 195                 b.ExpandSelf( Max( renderEntity->shaderParms[ SHADERPARM_SPRITE_WIDTH ], renderEntity->shaderParms[ SHADERPARM_SPRITE_HEIGHT ] ) * 0.5f );
 196         }
 197         return b;
 198 }