Function rend_DrawScaledBitmap

legacy/renderer/renderer.cpp:947–1007

draws a scaled 2d bitmap to our buffer

}
// draws a scaled 2d bitmap to our buffer
void rend_DrawScaledBitmap(int x1, int y1, int x2, int y2, int bm, float u0, float v0, float u1, float v1, int color,
                           float *alphas) {
  switch (Renderer_type) {
  case RENDERER_SOFTWARE_16BIT:
  case RENDERER_SOFTWARE_8BIT:
  case RENDERER_OPENGL:
  case RENDERER_GLIDE:
  case RENDERER_DIRECT3D: {
    g3Point *ptr_pnts[4];
    g3Point pnts[4];
    float r, g, b;
    if (color != -1) {
      r = GR_COLOR_RED(color) / 255.0;
      g = GR_COLOR_GREEN(color) / 255.0;
      b = GR_COLOR_BLUE(color) / 255.0;
    }
    for (int i = 0; i < 4; i++) {
      if (color == -1)
        pnts[i].p3_l = 1.0;
      else {
        pnts[i].p3_r = r;
        pnts[i].p3_g = g;
        pnts[i].p3_b = b;
      }
      if (alphas) {
        pnts[i].p3_a = alphas[i];
      }

      pnts[i].p3_z = 1.0f;
      pnts[i].p3_flags = PF_PROJECTED;
    }

    pnts[0].p3_sx = x1;
    pnts[0].p3_sy = y1;
    pnts[0].p3_u = u0;
    pnts[0].p3_v = v0;
    pnts[1].p3_sx = x2;
    pnts[1].p3_sy = y1;
    pnts[1].p3_u = u1;
    pnts[1].p3_v = v0;
    pnts[2].p3_sx = x2;
    pnts[2].p3_sy = y2;
    pnts[2].p3_u = u1;
    pnts[2].p3_v = v1;
    pnts[3].p3_sx = x1;
    pnts[3].p3_sy = y2;
    pnts[3].p3_u = u0;
    pnts[3].p3_v = v1;
    ptr_pnts[0] = &pnts[0];
    ptr_pnts[1] = &pnts[1];
    ptr_pnts[2] = &pnts[2];
    ptr_pnts[3] = &pnts[3];
    rend_SetTextureType(TT_LINEAR);
    rend_DrawPolygon(bm, ptr_pnts, 4);
    break;
  }
  default:
    Int3();