buddhi1980/mandelbulber2

Official repository for Mandelbulber v2

Krzysztof Marczak

@buddhi1980

What I can change is another allocation of memory for NetRender clients. Now it allocates memory for full image. I can change this to allocate only that parts which are actually rendered by given client.

It should solve this problem.

Martin

@acidhunter

i dont know if this works

just an idea

Krzysztof Marczak

@buddhi1980

I don't like idea with tiles, because it will be difficult to balance between nodes. Some of nodes can finish rendering very fast and some after very long time. Then it will be unefficient.

Martin

@acidhunter

i dont mean to implement this in netrender

Krzysztof Marczak

@buddhi1980

If you just ask to rendering parts of image, it's only partially implemented in the code, but not finished.

Martin

@acidhunter

another example,
uploading a settings file to 100 servers, every server renders a defined part and uploads it afterwards to a ftp or something else

so it would be possible to distribute it to a cloud provider to render images with unlimited size

after all nodes are finished the tiles can merged

Martin

@acidhunter

output could be something like this

http://mandelwerk.deviantart.com/journal/Worlds-biggest-mandelbulb-image-3-3-Gigapixels-214228096

Sebastian Jennen

@zebastian

@buddhi1980 please see latest commit. this may interfere with your code changes. watchout for merge conflicts! buddhi1980/mandelbulber2@2fb9571

Krzysztof Marczak

@buddhi1980

Thanks for your commit. It's good idea to test fractal formulas. Now I'm merging changes.

Krzysztof Marczak

@buddhi1980

I can take some time, because I have to solve problem with mandelbulber_cl_data.h inclusion

Krzysztof Marczak

@buddhi1980

I have merged all code. You can continue. But before please read comments added on GitHub in latest commit.

Martin

@acidhunter

hello there
is opencl included by default when building from git?

i can do some tests on archlinux and docker

Krzysztof Marczak

@buddhi1980

in mandelbulber2/qmake directory there is mandelbulber-opencl.pro. This will create makefile for opencl version. When you start Mandelbulber go to preferences and enable OpenCl on GPU tab.

Sebastian Jennen

@zebastian

i am having a problem with fractal.hpp, the enums are nested inside structs, like:

// basic combo
struct sFractalCombo
{
    enum combo
    {
        mode0,
        mode1,
        mode2,
        mode3,
        mode4,
        mode5,
        mode6,
        mode7,
    };
    combo modeA;
    //        combo modeB;
    //        combo modeC;
};

Krzysztof Marczak

@buddhi1980

doesn't work in pure C?

Sebastian Jennen

@zebastian

this does not work inside opencl:
/usr/share/mandelbulber2/opencl/../opencl/fractal_cl.h:278:2: error: type name does not allow storage class to be specified
typedef enum {

my first idea was to simply unloop this and put enums before the including struct, but we have got collisions with each other and the global namespace: acos

Krzysztof Marczak

@buddhi1980

It can be done if you convert them to correct names like: enumFractalComboCombo and items cound be: FractalComboComboMode0, FractalComboComboMode1...

another example: enumFractalMagTransformsMulti_orderOfTransf, and items like enumFractalMagTransformsMulti_orderOfTransfTypeT1, enumFractalMagTransformsMulti_orderOfTransfTypeT2 ...

they are long but will be no collissions

Sebastian Jennen

@zebastian

i see, thats problably the right way in the first place, and decouples the formula specific struct from the general enum types which are used cross formula

Krzysztof Marczak

@buddhi1980

I think we have no other choice

Sebastian Jennen

@zebastian

puh, got it

that was a lot of find and replace, if we want to change the names again, this should now be easier

Krzysztof Marczak

@buddhi1980

@zebastan, I have changed names of all enums to start with enum..., but now your script cannot rename items in emums body, so we have duplicate names. I have corrected all enums manually, but would be good to correct php script (if it is possible).

Martin

@acidhunter

@buddhi1980 it works on archlinux ;-)

really fast^^

Krzysztof Marczak

@buddhi1980

I'm starting to standardize interfaces (parameters) for fractal formula functions. Please do not commit any changes to the code for next several hours. I will let you know when I finish

Krzysztof Marczak

@buddhi1980

All changes done. Now all formulas use 4D algebra and functions have the same parameter set. @zebastian, now you can continue your work

Sebastian Jennen

@zebastian

really good! this will make opencl development way easier

Sebastian Jennen

@zebastian

I just rechecked all cl formula files currently available, all working fine: https://github.com/buddhi1980/mandelbulber2/tree/master/mandelbulber2/formula/opencl

Sebastian Jennen

@zebastian

just did a test with packet: https://app.packet.net/portal
They offer 96cores of AMDv8 machines for 0.50$ / hour, was quite easy to setup an ubuntu, prepare for development.
compilation took less than a minute! --> make -j 93
rendering performance is quite descent but not comparable to intel CPU

In the image:
upper part: running of mandelbulber in cli mode for the flight animation
lower part: the output of htop (not showing all cores, since screen too small)

Krzysztof Marczak

@buddhi1980

Nice!

Sebastian Jennen

@zebastian

some of the mengers give really nice images, even with the limited opencl engine

Krzysztof Marczak

@buddhi1980

What you think to release alpha version of the program in currect state of implementation of opencl? Initial feedback from users will give us input to correct core functions.

To do this release we need to integrate UI functions from perefences dialog and figure out how to compile the program with mingw.

Sebastian Jennen

@zebastian

sure, we just need to make it clear, that this is a alpha version

BTW: can i do the refactor of the cpp code right now? there are a lot of header comments missing and some code indentation stuff.

Krzysztof Marczak

@buddhi1980

ok, you can do this now

@zebastian , can you take care about UI elements for GPU in preferences dialog? I will work with cross-compilation

I will also add missing DE calculation for pseudo-kleinian formulas

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