Function ui_DrawBitmap

ui/UIDraw.cpp:190–221

draws all textures derived from ui_bm_handle.

//	draws all textures derived from ui_bm_handle.
void ui_DrawBitmap(UIBitmapItem *bi, int x, int y, uint8_t alpha) {
  if (bi->is_chunked()) {
    chunked_bitmap *chunk = bi->get_chunked_bitmap();
    rend_DrawChunkedBitmap(chunk, x, y, alpha);
  } else {
    int bmp_w = bm_w(bi->get_bitmap(), 0);
    int bmp_h = bm_h(bi->get_bitmap(), 0);
    float u1, v1;

    if ((x + bmp_w) > m_UIDrawRight) {
      u1 = ((float)(m_UIDrawRight - x)) / ((float)bmp_w);
      bmp_w = m_UIDrawRight - x;
    } else
      u1 = 1.0f;

    if ((y + bmp_h) > m_UIDrawBottom) {
      v1 = ((float)(m_UIDrawBottom - y)) / ((float)bmp_h);
      bmp_h = m_UIDrawBottom - y;
    } else
      v1 = 1.0f;

    rend_SetOverlayType(OT_NONE);
    rend_SetLighting(LS_NONE);
    rend_SetColorModel(CM_MONO);
    rend_SetZBufferState(0);
    rend_SetAlphaType(ATF_CONSTANT + ATF_TEXTURE);
    rend_SetAlphaValue(alpha);
    rend_SetWrapType(WT_CLAMP);

    rend_DrawScaledBitmap(x, y, x + bmp_w, y + bmp_h, bi->get_bitmap(), 0, 0, u1, v1);
  }
}

int ui_GetBitmapWidth(UIBitmapItem *bi) {
  if (bi->is_chunked()) {