r_sprites.c

   1
   2 #include "quakedef.h"
   3 #include "r_shadow.h"
   4
   5 extern cvar_t r_labelsprites_scale;
   6 extern cvar_t r_labelsprites_roundtopixels;
   7
   8 void R_Model_Sprite_Draw_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
   9 {
  10         int i;
  11         model_t *model = ent->model;
  12         vec3_t left, up, org, mforward, mleft, mup, middle;
  13         float scale, dx, dy, hud_vs_screen;
  14
  15         // nudge it toward the view to make sure it isn't in a wall
  16         Matrix4x4_ToVectors(&ent->matrix, mforward, mleft, mup, org);
  17         VectorSubtract(org, r_view.forward, org);
  18         switch(model->sprite.sprnum_type)
  19         {
  20         case SPR_VP_PARALLEL_UPRIGHT:
  21                 // flames and such
  22                 // vertical beam sprite, faces view plane
  23                 scale = ent->scale / sqrt(r_view.forward[0]*r_view.forward[0]+r_view.forward[1]*r_view.forward[1]);
  24                 left[0] = -r_view.forward[1] * scale;
  25                 left[1] = r_view.forward[0] * scale;
  26                 left[2] = 0;
  27                 up[0] = 0;
  28                 up[1] = 0;
  29                 up[2] = ent->scale;
  30                 break;
  31         case SPR_FACING_UPRIGHT:
  32                 // flames and such
  33                 // vertical beam sprite, faces viewer's origin (not the view plane)
  34                 scale = ent->scale / sqrt((org[0] - r_view.origin[0])*(org[0] - r_view.origin[0])+(org[1] - r_view.origin[1])*(org[1] - r_view.origin[1]));
  35                 left[0] = (org[1] - r_view.origin[1]) * scale;
  36                 left[1] = -(org[0] - r_view.origin[0]) * scale;
  37                 left[2] = 0;
  38                 up[0] = 0;
  39                 up[1] = 0;
  40                 up[2] = ent->scale;
  41                 break;
  42         default:
  43                 Con_Printf("R_SpriteSetup: unknown sprite type %i\n", model->sprite.sprnum_type);
  44                 // fall through to normal sprite
  45         case SPR_VP_PARALLEL:
  46                 // normal sprite
  47                 // faces view plane
  48                 VectorScale(r_view.left, ent->scale, left);
  49                 VectorScale(r_view.up, ent->scale, up);
  50                 break;
  51         case SPR_LABEL_SCALE:
  52                 // normal sprite
  53                 // faces view plane
  54                 // fixed HUD pixel size specified in sprite
  55                 // honors scale
  56                 // honors a global label scaling cvar
  57
  58                 scale = 2 * ent->scale * (DotProduct(r_view.forward, org) - DotProduct(r_view.forward, r_view.origin)) * r_labelsprites_scale.value;
  59                 VectorScale(r_view.left, scale * r_view.frustum_x / vid_conwidth.integer, left); // 1px
  60                 VectorScale(r_view.up, scale * r_view.frustum_y / vid_conheight.integer, up); // 1px
  61                 break;
  62         case SPR_LABEL:
  63                 // normal sprite
  64                 // faces view plane
  65                 // fixed pixel size specified in sprite
  66                 // tries to get the right size in HUD units, if possible
  67                 // ignores scale
  68                 // honors a global label scaling cvar before the rounding
  69                 // FIXME assumes that 1qu is 1 pixel in the sprite like in SPR32 format. Should not do that, but instead query the source image! This bug only applies to the roundtopixels case, though.
  70
  71                 scale = 2 * (DotProduct(r_view.forward, org) - DotProduct(r_view.forward, r_view.origin));
  72
  73                 if(r_labelsprites_roundtopixels.integer)
  74                 {
  75                         hud_vs_screen = max(
  76                                 vid_conwidth.integer / (float) r_view.width,
  77                                 vid_conheight.integer / (float) r_view.height
  78                         ) / max(0.125, r_labelsprites_scale.value);
  79
  80                         // snap to "good sizes"
  81                         // 1     for (0.6, 1.41]
  82                         // 2     for (1.8, 3.33]
  83                         if(hud_vs_screen <= 0.6)
  84                                 hud_vs_screen = 0; // don't, use real HUD pixels
  85                         else if(hud_vs_screen <= 1.41)
  86                                 hud_vs_screen = 1;
  87                         else if(hud_vs_screen <= 3.33)
  88                                 hud_vs_screen = 2;
  89                         else
  90                                 hud_vs_screen = 0; // don't, use real HUD pixels
  91
  92                         if(hud_vs_screen)
  93                         {
  94                                 // use screen pixels
  95                                 VectorScale(r_view.left, scale * r_view.frustum_x / (r_view.width * hud_vs_screen), left); // 1px
  96                                 VectorScale(r_view.up, scale * r_view.frustum_y / (r_view.height * hud_vs_screen), up); // 1px
  97                         }
  98                         else
  99                         {
 100                                 // use HUD pixels
 101                                 VectorScale(r_view.left, scale * r_view.frustum_x / vid_conwidth.integer * r_labelsprites_scale.value, left); // 1px
 102                                 VectorScale(r_view.up, scale * r_view.frustum_y / vid_conheight.integer * r_labelsprites_scale.value, up); // 1px
 103                         }
 104
 105                         if(hud_vs_screen == 1)
 106                         {
 107                                 VectorMA(r_view.origin, scale, r_view.forward, middle); // center of screen in distance scale
 108                                 dx = 0.5 - fmod(r_view.width * 0.5 + (DotProduct(org, left) - DotProduct(middle, left)) / DotProduct(left, left) + 0.5, 1.0);
 109                                 dy = 0.5 - fmod(r_view.height * 0.5 + (DotProduct(org, up) - DotProduct(middle, up)) / DotProduct(up, up) + 0.5, 1.0);
 110                                 VectorMAMAM(1, org, dx, left, dy, up, org);
 111                         }
 112                 }
 113                 else
 114                 {
 115                         // use HUD pixels
 116                         VectorScale(r_view.left, scale * r_view.frustum_x / vid_conwidth.integer * r_labelsprites_scale.value, left); // 1px
 117                         VectorScale(r_view.up, scale * r_view.frustum_y / vid_conheight.integer * r_labelsprites_scale.value, up); // 1px
 118                 }
 119                 break;
 120         case SPR_ORIENTED:
 121                 // bullet marks on walls
 122                 // ignores viewer entirely
 123                 VectorCopy(mleft, left);
 124                 VectorCopy(mup, up);
 125                 break;
 126         case SPR_VP_PARALLEL_ORIENTED:
 127                 // I have no idea what people would use this for...
 128                 // oriented relative to view space
 129                 // FIXME: test this and make sure it mimicks software
 130                 left[0] = mleft[0] * r_view.forward[0] + mleft[1] * r_view.left[0] + mleft[2] * r_view.up[0];
 131                 left[1] = mleft[0] * r_view.forward[1] + mleft[1] * r_view.left[1] + mleft[2] * r_view.up[1];
 132                 left[2] = mleft[0] * r_view.forward[2] + mleft[1] * r_view.left[2] + mleft[2] * r_view.up[2];
 133                 up[0] = mup[0] * r_view.forward[0] + mup[1] * r_view.left[0] + mup[2] * r_view.up[0];
 134                 up[1] = mup[0] * r_view.forward[1] + mup[1] * r_view.left[1] + mup[2] * r_view.up[1];
 135                 up[2] = mup[0] * r_view.forward[2] + mup[1] * r_view.left[2] + mup[2] * r_view.up[2];
 136                 break;
 137         }
 138
 139         R_Mesh_Matrix(&identitymatrix);
 140
 141         // LordHavoc: interpolated sprite rendering
 142         for (i = 0;i < 4;i++)
 143         {
 144                 if (ent->frameblend[i].lerp >= 0.01f)
 145                 {
 146                         mspriteframe_t *frame = model->sprite.sprdata_frames + ent->frameblend[i].frame;
 147                         texture_t *texture = model->data_textures + ent->frameblend[i].frame;
 148                         R_UpdateTextureInfo(ent, texture);
 149                         // FIXME: negate left and right in loader
 150                         R_DrawSprite(texture->currentlayers[0].blendfunc1, texture->currentlayers[0].blendfunc2, texture->basetexture, texture->currentskinframe->fog, (texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST), (texture->currentmaterialflags & MATERIALFLAG_SHORTDEPTHRANGE), org, left, up, frame->left, frame->right, frame->down, frame->up, texture->currentlayers[0].color[0], texture->currentlayers[0].color[1], texture->currentlayers[0].color[2], ent->alpha * ent->frameblend[i].lerp);
 151                 }
 152         }
 153 }
 154
 155 void R_Model_Sprite_Draw(entity_render_t *ent)
 156 {
 157         vec3_t org;
 158         if (ent->frameblend[0].frame < 0)
 159                 return;
 160
 161         Matrix4x4_OriginFromMatrix(&ent->matrix, org);
 162         R_MeshQueue_AddTransparent(ent->effects & EF_NODEPTHTEST ? r_view.origin : org, R_Model_Sprite_Draw_TransparentCallback, ent, 0, rsurface.rtlight);
 163 }
 164