Homebrew [Release] {beta} sf2dlib - Simple and Fast 2D library (using the GPU)

[nop90]

for sf2dlib ty a "make clean" before the make!

 

[dfsa3fdvc1]

for sf2dlib ty a "make clean" before the make!

Just gave that a shot and I'm still getting the same error.
I'll set up another VM and start all this over again (without installing Python 2.7) and see if that works.

 

[Davideesk]

Can someone tell me how to use sf2d_set_pixel()? It's producing some weird results for me.

...

I've used sf2d_get_pixel() on textures and it works perfectly fine. I don't know if I am doing something wrong or if it is a bug with this function.

Alright, so playing around a bit I found out the issue. It seems you can't use sf2d_set_pixel function with a blank texture that was created with the sf2d_create_texture function. I am now importing a blank PNG image and now the function works perfectly.

 

[MRJPGames]

Alright, so playing around a bit I found out the issue. It seems you can't use sf2d_set_pixel function with a blank texture that was created with sf2d_create_texture function. I am now importing a blank PNG image and now the function works perfectly.

Ok, sounds like something that should be fixed though.

 

[dfsa3fdvc1]

for sf2dlib ty a "make clean" before the make!

Alright so I gave this yet another shot using everything I've learned so far. All the things I said before apply. Long list detailing every single thing I did is in the quote below and screenshot of everything including errors is in the attached image

So yeah, if anyone can show me how to install sf2dlib on a fresh copy of Windows I'd love you.

EDIT: So the make error in 'libsf2d' says something about GPU_SetStencilOP(GPU_KEEP.... That wouldn't possible be related to the latest ctrulib commit about GPU_KEEP would it? I'm just think out loud. IDK, it's probably something I'm doing.

HOST Computer: Windows 7 Ultimate x64 SP1
VM Software: VMware Workstation 10.0.1 build-1379776
VM OS: Windows: Windows 7 Ultimate x64 SP1
Windows ISO MD5: c9f7ecb768acb82daacf5030e14b271e

Navigate to Python.org
Download: Python 3.4.3 Windows x86-64 MSI Installer
https://www.python.org/ftp/python/3.4.3/python-3.4.3.amd64.msi

Install Python 3.4.3.

Download: CTRULIB v0.5.0
https://github.com/smealum/ctrulib/releases/tag/v0.5.0

Download: devkitProUpdater-1.5.4
http://sourceforge.net/projects/devkitpro/files/Automated Installer/

Install devkitProUpdater-1.5.4

Copy libctru from ctrulib-master.zip to newly created C:\3DS folder. (notice the directory tree on left)

Download: sf2dlib-master.zip
https://github.com/xerpi/sf2dlib

Copy libsf2d from from sf2dlib-master.zip into C:\3DS

Download aemstro-master.zip
https://github.com/smealum/aemstro

Copy 'aemstro.py' and 'aemstro_as.py' from aemstro-master.zip into newly created C:\devkitPro\aemstro

create System Variable 'AEMSTRO' pointing to C:\devkitPro\aemstro

'make' C:\3DS\libctru then 'make install' that same directory

create System Variable 'CTRULIB' pointing to C:\devkitPro\libctru

attempt and fail to make C:\3DS\libsf2d

-------

PS:
Here's a copy of my VM's SYSTEM PATH if that's relevant
c:\devkitPro\msys\bin;C:\Python34\;C:\Python34\Scripts;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\

 

[yirgacheffe]

EDIT: So the make error in 'libsf2d' says something about GPU_SetStencilOP(GPU_KEEP.... That wouldn't possible be related to the latest ctrulib commit about GPU_KEEP would it? I'm just think out loud. IDK, it's probably something I'm doing.

You actually found the problem you just had one more step to fix it.

Open the file libsf2d/source/sf2d.c in a text editor and search for "GPU_KEEP" and change it to "GPU_STENCIL_KEEP" three times, same as in that link you found:

- GPU_SetStencilOp(GPU_KEEP, GPU_KEEP, GPU_KEEP);
+ GPU_SetStencilOp(GPU_STENCIL_KEEP, GPU_STENCIL_KEEP, GPU_STENCIL_KEEP);

The compile error will go away after you save this fix.

 

[Davideesk]

Ok, sounds like something that should be fixed though.

That is true. Hopefully it will be a quick fix for the author. I have not had any other problems so far.

This is an awesome 2D library xerpi. I will definitely be using this in the future. My first project with it will be a port of one of my favorite Ludum dare games Minicraft. (It was created by the same guy who made Minecraft).

 

[dfsa3fdvc1]

You actually found the problem you just had one more step to fix it.
The compile error will go away after you save this fix.

Oh damn, I feel all smart and shit. Awesome. Finally got it to compile!

 

[dfsa3fdvc1]

So, now that I got the sf2dlib working anyone got some protips on how to get the load_images library working with it? Screen of successful compilations of the sf2dlib and the error I'm getting with the load images.
Again, I have 0 idea what I'm doing. I just dragged the images library with the other stuff and wrote 'make'.

EDIT: THe error is about a missing file "jpeglib.h. Where can I find that file?

 

[nop90]

You have to make and install the Portilbs.

Xerpy on his github has a make file that downloads, compiles and install everything for the 3DS toolchain, but it needs wget (or you can download the packages by hand an puth them in the right place).

The packages versions in the script aren't the latest, but work fine. If you want the latest you have to edit the script.

Good luck.

 

[xerpi]

Can someone tell me how to use sf2d_set_pixel()? It's producing some weird results for me.

Here is the current code that I am using:

int main()
{
    sf2d_init();
    sf2d_set_clear_color(RGBA8(0x40, 0x40, 0x40, 0xFF));
  
    sf2d_texture *tex2 = sf2d_create_texture(200,120,TEXFMT_RGBA8,SF2D_PLACE_RAM);

    sf2d_set_pixel (tex2, 1, 1, 0xFFFF0000); // Blue
    sf2d_set_pixel (tex2, 0, 1, 0xFF7F0000);
    sf2d_set_pixel (tex2, 2, 2, 0xFF00FF00); // Green
    sf2d_set_pixel (tex2, 0, 2, 0xFF007F00);
    sf2d_set_pixel (tex2, 3, 3, 0xFF0000FF); // Red
    sf2d_set_pixel (tex2, 0, 3, 0xFF00007F);
    sf2d_set_pixel (tex2, 4, 4, 0xFFFFFFFF); // White
    sf2d_set_pixel (tex2, 0, 4, 0xFF7F7F7F);
    // Using RGBA8() does not change anything.
  
    consoleInit(GFX_BOTTOM, NULL); // Console on the bottom screen
    printf("Press 'Start' to exit.");

    while (aptMainLoop()) {

        hidScanInput();

        if (hidKeysHeld() & KEY_START) {
            break;
        }

        sf2d_start_frame(GFX_TOP, GFX_LEFT);  
           sf2d_draw_texture_scale(tex2, 0, 0, 2.0, 2.0);
        sf2d_end_frame();

        sf2d_swapbuffers();
    }

    sf2d_free_texture(tex2);

    sf2d_fini();
    return 0;
}

The pixels seem to be coming from the top-right of my 3ds screen. (I apologize for the sub-potato quality):

I've used sf2d_get_pixel() on textures and it works perfectly fine. I don't know if I am doing something wrong or if it is a bug with this function.

Try calling sf2d_texture_tile32 at some point before rendering, for example just after sf2d_texture *tex2 = sf2d_create_texture(200,120,TEXFMT_RGBA8,SF2D_PLACE_RAM);.

 

[Davideesk]

Is there an easy way to achieve a 'minus' effect on a square/texture? Like render a square with a circle section cut out of it. I'm aware of the scissor test, but that seems limited in functionality. I'm asking this because the project I'm porting uses it for underground lighting. I can just use the functions used by the game, but they are relatively intensive on the cpu. I don't want to worry about frame drops, so I was wondering if there is a better way of doing it.

 

[machinamentum]

Is there an easy way to achieve a 'minus' effect on a square/texture? Like render a square with a circle section cut out of it. I'm aware of the scissor test, but that seems limited in functionality. I'm asking this because the project I'm porting uses it for underground lighting. I can just use the functions used by the game, but they are relatively intensive on the cpu. I don't want to worry about frame drops, so I was wondering if there is a better way of doing it.

There's several ways to accomplish this. The approach I've used in the past is to render just the alpha channel of the square with blending disabled, then render the alpha channel of the circle over it (presumably your circle would be a quad with a circle textured onto it), then render the square again with bending and all color channels enabled with the blending mode set to DST_ALPHA, ONE_MINUS_DST_ALPHA. This has the advantage of "cutting out" while retaining the effect of gradients due to alpha blending. Stencils are slightly easier to use IMO.

EDIT: here's some GL code to illustrate the technique better, I'm not sure how to use sf2dlib so porting this to work with it is an exercise to the reader.

glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_TRUE);
glBlendFunc(GL_ONE_MINUS_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_BLEND);
glEnable(GL_TEXTURE_2D);
glColor4f(1, 1, 1, 1);
bind_texture();
//draw main object's alpha
glBegin(GL_QUADS);
glTexCoord2f(0, 0);
glVertex2f(X, Y);
glTexCoord2f(1, 0);
glVertex2f(X + Width, Y);
glTexCoord2f(1, 1);
glVertex2f(X + Width, Y + Height);
glTexCoord2f(0, 1);
glVertex2f(X, Y + Height);
glEnd();

glEnable(GL_BLEND);
glBlendFunc(GL_ONE_MINUS_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
//draw cut out (i used some baked text here)
ui_label::Draw();

glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_FALSE);
glBlendFunc(GL_DST_ALPHA, GL_ONE_MINUS_DST_ALPHA);
bind_texture();
glColor4f(1, 1, 1, 1);

//draw main object again...

 

[Deleted User]

.​

 

[elhobbs]

Tried installing, gettingan error related with Python? Just tried using the method from https://stonedcoders.wordpress.com/2015/08/29/setting-up-sf2dlib/

Python is not in your path

 

[MRJPGames]

Tried installing, gettingan error related with Python? Just tried using the method from https://stonedcoders.wordpress.com/2015/08/29/setting-up-sf2dlib/

Have you installed python in the folder C:\python34? It seems like you either didn't install python 3, or installed it elsewhere.

 

[tj_cool]

Seems more like there is a superfluous ) in that line, it should be:

@C:\Python34\python.exe C:\Users\Admin\Desktop\sf2dlib-master\libsf2d\aemstro_as.py $< ../$(notdir $<).shbin

Not

@C:\Python34\python.exe C:\Users\Admin\Desktop\sf2dlib-master\libsf2d\aemstro_as.py $< ../$(notdir $<).shbin)

 

[randomdev]

Seems more like there is a superfluous ) in that line, it should be:

@C:\Python34\python.exe C:\Users\Admin\Desktop\sf2dlib-master\libsf2d\aemstro_as.py $< ../$(notdir $<).shbin

Not

@C:\Python34\python.exe C:\Users\Admin\Desktop\sf2dlib-master\libsf2d\aemstro_as.py $< ../$(notdir $<).shbin)

thanks man

 

[Deleted User]

.

 

[Suikoden77]

Well I'm a bit noobish compiling the libraries.. I'm having troubles loading textures since I think I'm using too much memory and right now my game is running on citra but not in my O3DS, so I am thinking on using sfillib which seems to make things easier but I've downloaded the binaries and I don't know where to put things to make it compile . This is my mess of devkitPro folder:

Spoiler

I should clean it a bit since there are duplicates but it's working and really don't know how haha