///////////////////////////////////////////////////////
| 634 | |
| 635 | //////////////////////////////////////////////////////////// |
| 636 | void DRMContext::display() |
| 637 | { |
| 638 | if (m_surface == EGL_NO_SURFACE) |
| 639 | return; |
| 640 | |
| 641 | if (!m_scanOut) |
| 642 | { |
| 643 | eglCheck(eglSwapBuffers(m_display, m_surface)); |
| 644 | return; |
| 645 | } |
| 646 | |
| 647 | // Handle display of buffer to the screen |
| 648 | DrmFb* fb = nullptr; |
| 649 | |
| 650 | if (!waitForFlip(-1)) |
| 651 | return; |
| 652 | |
| 653 | if (m_currentBO) |
| 654 | { |
| 655 | gbm_surface_release_buffer(m_gbmSurface, m_currentBO); |
| 656 | m_currentBO = nullptr; |
| 657 | } |
| 658 | |
| 659 | eglCheck(eglSwapBuffers(m_display, m_surface)); |
| 660 | |
| 661 | m_currentBO = m_nextBO; |
| 662 | |
| 663 | // This call must be preceded by a single call to eglSwapBuffers() |
| 664 | m_nextBO = gbm_surface_lock_front_buffer(m_gbmSurface); |
| 665 | |
| 666 | if (!m_nextBO) |
| 667 | return; |
| 668 | |
| 669 | fb = drmFbGetFromBo(*m_nextBO); |
| 670 | if (!fb) |
| 671 | { |
| 672 | err() << "Failed to get FB from buffer object" << std::endl; |
| 673 | return; |
| 674 | } |
| 675 | |
| 676 | // If first time, need to first call drmModeSetCrtc() |
| 677 | if (!m_shown) |
| 678 | { |
| 679 | if (drmModeSetCrtc(drmNode.fileDescriptor, drmNode.crtcId, fb->fbId, 0, 0, &drmNode.connectorId, 1, drmNode.mode)) |
| 680 | { |
| 681 | err() << "Failed to set mode: " << std::strerror(errno) << std::endl; |
| 682 | std::abort(); |
| 683 | } |
| 684 | m_shown = true; |
| 685 | } |
| 686 | |
| 687 | // Do page flip |
| 688 | if (!drmModePageFlip(drmNode.fileDescriptor, drmNode.crtcId, fb->fbId, DRM_MODE_PAGE_FLIP_EVENT, &waitingForFlip)) |
| 689 | waitingForFlip = 1; |
| 690 | } |
| 691 | |
| 692 | |
| 693 | //////////////////////////////////////////////////////////// |
nothing calls this directly
no test coverage detected