User:Vladbogolin/GSoC2014/Logs

Daily Progress[edit]

Project Info[edit]

Project Name Embedding a framebuffer window
Student Name Bogolin Simion Vlad
IRC nick vladbogo
Link to proposal http://brlcad.org/wiki/User:Vladbogolin/Proposal/EmbeddingFrameBuffer

Milestones[edit]

  • Implementing a new Qt framebuffer
  • Raytracing
  • Embedding a framebuffer window

Progress reports[edit]

  • Midterm evaluation report can be found here
  • Project summary can be found here

Logs[edit]

Community Bonding[edit]

  • Studied the existing framebuffer implementation
  • Researched to see exactly what framebuffer functions are called when using the rt command

Week 1[edit]

  • Weekly milestone:
    • Start working at the "open" function.
  • 19 May:
    • Started creating a new Qt framebuffer: I started by creating a txt framebuffer that just logs function calls.
  • 20 May:
    • Mostly a break day
  • 21 May - 25 May:
    • In this interval I had my final exams

Week 2[edit]

  • Weekly milestone:
    • Make up for the lost time due to exams
    • Implement the open/close functions
  • 26 May:
    • I had my last exam so from now on I will focus on the project.
    • Worked a little bit more on the txt framebuffer
  • 27 May:
    • Worked at attaching the txt framebuffer to the display manager - the txt framebuffer is almost done.
    • Studied the existing "open" functions.
  • 28 May:
    • Attached the qt framebuffer to the display manager.
    • Started working at the "open" function.
  • 29 May:
    • Continued working at the "open" function - it should be done shortly
  • 30 May:
    • Researched how the raytracer uses the framebuffer and attached the new framebuffer to it.
  • 31 May:
    • Mostly a break day.
  • 1 June:
    • Break day.

Week 3[edit]

  • Weekly milestone:
    • Finish implementing open/close and start working at the write function.
  • 2 June:
    • Continued working at the open function: created an empty window - the function should be done tomorrow.
  • 3 June:
    • Basically finished the open function - some changes might be needed during the implementation of the other functions.
  • 4 June:
    • Break day.
  • 5 June:
    • Researched the write function and the existing framebuffer implementation.
  • 6 June:
    • Break day.
  • 7 June:
    • Continued researching the write function and how the content is displayed.
  • 8 June:
    • More research, but mostly a break day.
  • Conclusion:
    • Finished implementing the open function and studied existing implementation of the write function

Week 4[edit]

  • Weekly milestone:
    • Have content displayed in the window
  • 9 June:
    • Solved a issue regarding the cmake build - I forgot to add Qt_INCLUDE_DIRS.
    • Created a custom window so that it can be easily added content to it.
  • 10 June:
    • Released memory so that the qt_close function is done.
    • Started working at content displaying. Since this is the main aspect I want to do as much research as possible on how to represent the backing store and how to display its content.
  • 11 June:
    • Break day.
  • 12 June:
    • Created and allocated the backing store for the framebuffer.
    • Started working at the write function.
    • Managed to get some content displayed - even though it's far from done, it is a good start
kEKv6e9.png
  • 13 June:
    • Continued working at the write function.
  • 14 June:
    • Managed to fix the content display:
kFaMQk9.png
  • 15 June:
    • Mostly a break day.

Week 5[edit]

  • Weekly milestone:
    • Finish the write function.
  • 16 June:
    • Finished a first version of the write function. Also, tested if more complex models are displayed correctly.
BqYS7Mr.png
  • 17 June:
    • Started working at the open_existing function.
  • 18 June:
    • Break day.
  • 19 June:
    • Searched for the best way on how to create the open_existing function. Since until now, the functions were declared in fb.h and all framebuffers use the same header, after adding the Qt includes a lot of conflicts appear so a new method of dealing with the open_existing functions is necessary.
  • 20 June:
    • Continued studying how to integrate the open_existing function.
  • 21 June:
    • Break day.
  • 22 June:
    • Worked at the open_existing function.

Week 6[edit]

  • Weekly milestone:
    • Finish the open_existing function
  • 23 June:
    • Worked on raytracing from the display manager.
  • 24 June:
    • Break day.
  • 25 June:
    • Created the midterm report that can be found here
  • 26 June:
    • Processed events so that the output is displayed line by line
    • Fixed the upside down drawing problem:
hOIryrt.png h3TLREb.png
  • 27 June:
    • Break day.
  • 28 June:
    • Started modifying the fbio interface in order to add a generic open_existing entry.
  • 29 June:
    • Mostly a break day.

Week 7[edit]

  • Time spent preparing my final project

Week 8[edit]

  • Weekly milestone:
    • Finish modifying the interface in order to use the open_existing function
  • 7-8 July:
    • Had my final paper presentation. Now I can focus only on GSoC for the rest of the summer.
  • 9 July:
    • Added a new entry in struct dm so that the framebuffer can be opened from libdm. This is necessary in order to avoid using qt code in mged/dm-qt and also can be used for refactoring dm related code from mged folder.
    • Added the _qt_open_existing function in fb.h. This is a temporary solution until a final form of the function is implemented. In the end a new entry will be added in the fbio interface.
    • Opened the framebuffer from the display manager, but at the moment there are two different windows.
  • 10 July:
    • Continued working at the open_existing function. Hopefully it will be done by the end of the week.
  • 11 July:
    • Struggled more with the embedding of a framebuffer window.
  • 12 July:
    • More struggle regarding the display of raytraced objects from the display manager.
  • 13 July:
    • Mostly a break day.

Week 9[edit]

  • Weekly milestone:
    • Finish the embedding of a framebuffer window
  • 14 July:
    • Worked at the actual embedding of a framebuffer window - still couldn't find a working solution
  • 15 July:
    • Did a deeper research on how the existing implementation is done. Still couldn't find a way do display content in the embedded window.
  • 16 July:
    • Break day
  • 17 July:
    • After a lot of struggle, I have finally found a solution that seems to solve all the problems. Hopefully tomorrow there would be content displayed in the embedded framebuffer window.
  • 18 July:
    • After using a QPainter to draw the raytraced content in the existing window, content can be displayed so I am on the right track with the embedding. There still are some fixes that need to be done: when the raytracing is done the drawn content disappears and also a few fixes regarding the position of the drawn image are necessary.
  • 19 July:
    • Tried to solve the problems regarding the embedding so I did a little more research on why the content disappears but with no luck yet.
  • 20 July:
    • Tried to solve the problem regarding the position of the drawn image.

Week 10[edit]

  • Weekly milestone:
    • Have a working framebuffer.
  • 21 July:
    • Implemented the configureWindow function.
    • Continued trying to solve the problem regarding the position of the drawn image - still no luck.
    • Redesigned the write function in order to solve the display problem - there still are some fixes that need to be made.
  • 22 July:
    • Continued working at the new write function.
  • 23 July:
    • Solved the display problem - now correct drawings can be made in the embedded framebuffer window:

Mged fb.png Mged fb2.png

  • 24 July:
    • Tried to find out why the image disappears after is drawn in the embedded framebuffer window - more research needs to be done since I haven't found the problem.
  • 25 July:
    • Break day
  • 26 July:
    • Break day
  • 27 July:
    • More research regarding the disappearing of the drawings - found the problem (after the raytracing the dm redraws the entire window and the raytraced content erases in this way) and tried to come up with a solution.

Week 11[edit]

  • 28 July:
    • Continued trying to solve the disappearing problem.
  • 29 July:
    • Solved the disappearing problem. The framebuffer is almost done - there still are some fixes and tests that need to be made.
  • 30 July:
    • Break day.
  • 31 July:
    • Mostly a break day.
  • 1 August:
    • Made some fixes regarding the embedding of a framebuffer window.
    • Tested the embedding with different models - found some problems that need some further investigation (at some point the display manager crashes)

Mged fb3.png Mged fb4.png

  • 2 August:
    • Investigated to see why the display manager sometimes crashes using valgrind.
    • Started working at solving the invalid memory access.
  • 3 August:
    • Mostly a break day.

Week 12[edit]

  • 4 August:
    • Continued working at the invalid memory access problems - now everything works as expected.
  • 5 August:
    • Implemented the qt_clear function.
    • Made the display manager show only non-empty images (after the raytraced content is added to the image)
  • 6 August:
    • Integrated the fb in archer:

Archer fb.png Archer fb2.png

  • 7 August:
    • Did some testing to see that everything works as expected including the underlay, interlay and overlay modes
  • 8 August:
    • Implemented the qt_read, qt_readrect and qt_writerect functions.
    • Integrated mouse events.
  • 9 August:
    • Mostly a break day
  • 10 August:
    • Documented about colormaps.

Week 13[edit]

  • 11 August:
    • Started working at qt_wmap and qt_rmap.
  • 12 August:
    • Implemented the qt_rmap and qt_wmap functions.
  • 13 August:
    • Mostly a break day.
  • 14 August:
    • Just some small fixes.
  • 15 August:
    • Added a simple keyboard event
    • Written a project summary which can be found here