r_sprites.c

   1 #include "quakedef.h"
   2
   3 void GL_DrawSpriteImage (mspriteframe_t *frame, vec3_t origin, vec3_t up, vec3_t right, byte red, byte green, byte blue, int alpha)
   4 {
   5         byte alphaub;
   6         alphaub = bound(0, alpha, 255);
   7         transpolybegin(R_GetTexture(frame->texture), 0, R_GetTexture(frame->fogtexture), currententity->render.effects & EF_ADDITIVE ? TPOLYTYPE_ADD : TPOLYTYPE_ALPHA);
   8         transpolyvertub(origin[0] + frame->down * up[0] + frame->left * right[0], origin[1] + frame->down * up[1] + frame->left * right[1], origin[2] + frame->down * up[2] + frame->left * right[2], 0, 1, red, green, blue, alphaub);
   9         transpolyvertub(origin[0] + frame->up * up[0] + frame->left * right[0], origin[1] + frame->up * up[1] + frame->left * right[1], origin[2] + frame->up * up[2] + frame->left * right[2], 0, 0, red, green, blue, alphaub);
  10         transpolyvertub(origin[0] + frame->up * up[0] + frame->right * right[0], origin[1] + frame->up * up[1] + frame->right * right[1], origin[2] + frame->up * up[2] + frame->right * right[2], 1, 0, red, green, blue, alphaub);
  11         transpolyvertub(origin[0] + frame->down * up[0] + frame->right * right[0], origin[1] + frame->down * up[1] + frame->right * right[1], origin[2] + frame->down * up[2] + frame->right * right[2], 1, 1, red, green, blue, alphaub);
  12         transpolyend();
  13 }
  14
  15 /*
  16 =================
  17 R_DrawSpriteModel
  18
  19 =================
  20 */
  21 void R_DrawSpriteModel (entity_t *e, frameblend_t *blend)
  22 {
  23         vec3_t                  right, up, org, color;
  24         byte                    colorub[4];
  25         msprite_t               *psprite;
  26
  27         // don't even bother culling, because it's just a single
  28         // polygon without a surface cache
  29
  30         c_sprites++;
  31
  32         psprite = Mod_Extradata(e->render.model);
  33         //psprite = e->model->cache.data;
  34
  35         if (psprite->type == SPR_ORIENTED)
  36         {       // bullet marks on walls
  37                 AngleVectors (e->render.angles, NULL, right, up);
  38                 VectorSubtract(e->render.origin, vpn, org);
  39         }
  40         else
  41         {       // normal sprite
  42                 VectorCopy(vup, up);
  43                 VectorCopy(vright, right);
  44                 VectorCopy(e->render.origin, org);
  45         }
  46         if (e->render.scale != 1)
  47         {
  48                 VectorScale(up, e->render.scale, up);
  49                 VectorScale(right, e->render.scale, right);
  50         }
  51
  52         if (e->render.model->flags & EF_FULLBRIGHT || e->render.effects & EF_FULLBRIGHT)
  53         {
  54                 color[0] = e->render.colormod[0] * 255;
  55                 color[1] = e->render.colormod[1] * 255;
  56                 color[2] = e->render.colormod[2] * 255;
  57         }
  58         else
  59                 R_CompleteLightPoint(color, e->render.origin, true);
  60
  61         colorub[0] = bound(0, color[0], 255);
  62         colorub[1] = bound(0, color[1], 255);
  63         colorub[2] = bound(0, color[2], 255);
  64
  65         // LordHavoc: interpolated sprite rendering
  66         if (blend[0].lerp)
  67                 GL_DrawSpriteImage(((mspriteframe_t *)(psprite->ofs_frames + (int) psprite)) + blend[0].frame, org, up, right, colorub[0],colorub[1],colorub[2], e->render.alpha*255*blend[0].lerp);
  68         if (blend[1].lerp)
  69                 GL_DrawSpriteImage(((mspriteframe_t *)(psprite->ofs_frames + (int) psprite)) + blend[1].frame, org, up, right, colorub[0],colorub[1],colorub[2], e->render.alpha*255*blend[1].lerp);
  70         if (blend[2].lerp)
  71                 GL_DrawSpriteImage(((mspriteframe_t *)(psprite->ofs_frames + (int) psprite)) + blend[2].frame, org, up, right, colorub[0],colorub[1],colorub[2], e->render.alpha*255*blend[2].lerp);
  72         if (blend[3].lerp)
  73                 GL_DrawSpriteImage(((mspriteframe_t *)(psprite->ofs_frames + (int) psprite)) + blend[3].frame, org, up, right, colorub[0],colorub[1],colorub[2], e->render.alpha*255*blend[3].lerp);
  74 }
  75