#zstbi error

1 messages · Page 1 of 1 (latest)

undone prawn
#

when I'm trying to open a image file with zstbi
I get a segfault when trying to use the data

Segmentation fault at address 0x7fff54055000
zsh: segmentation fault (core dumped)
lean fox
#

did u init the library?

undone prawn
# 
    const image = try zstbi.Image.loadFromFile("src/container.jpg", 3);


    const w: c_int = @intCast(image.width);
    const h: c_int = @intCast(image.height);

    var tex: c_uint = undefined;
    gl.genTextures(gl.TEXTURE_2D, &tex);
    gl.bindTexture(gl.TEXTURE_2D, tex);
    gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGB, w, h, 0, gl.RGB, gl.UNSIGNED_BYTE, &image.data);

segfault is due to the last line ig

lean fox
#

oh u edited the error in the original post, that's a bit confusing ^^'

#

&image.data is wrong, should be image.data.ptr

#

i'm not even sure how that compiles tbh

#

oh i guess texImage2D prolly takes an *anyopaque or smth

undone prawn
lean fox
undone prawn
#

still segfault 😭

lean fox
#

weirdddd

#

run it in lldb and type bt after it segfaults

#

then send the output here

undone prawn
# 
(lldb) bt
* thread #1, name = 'opengl', stop reason = signal SIGSEGV: address not mapped to object (fault address: 0x7ffffffff000)
  * frame #0: 0x00007fffdc87a0fc libgallium-25.1.6.so`_mesa_HashFindFreeKeys + 60
    frame #1: 0x00007fffdc8a0ff7 libgallium-25.1.6.so`create_textures.part.0 + 87
    frame #2: 0x0000000001177352 opengl`main.main at main.zig:67:19
```\
#

i found the issue 🙂

undone prawn
#

and surely there's something wrong with this


    zstbi.init(allocator);
    defer zstbi.deinit();

cuz i get this error once the application window closes

thread 101375 panic: reached unreachable code
/usr/lib/zig/std/debug.zig:522:14: 0x109402d in assert (opengl)
    if (!ok) unreachable; // assertion failure
             ^
/home/dotdot/.cache/zig/p/zstbi-0.11.0-dev-L0Ea_-eVBwCl8RYA98PhLDw3Fhw5k7FJOHSMDKWDOvqx/src/zstbi.zig:25:11: 0x1171ffa in deinit (opengl)
    assert(mem_allocations.?.count() == 0);
          ^
/home/dotdot/Documents/zig/opengl/src/main.zig:42:23: 0x1171b72 in main (opengl)
    defer zstbi.deinit();
                      ^
/usr/lib/zig/std/start.zig:656:37: 0x1172767 in main (opengl)
            const result = root.main() catch |err| {
                                    ^
???:?:?: 0x7f34bc24d487 in ??? (libc.so.6)
Unwind information for `libc.so.6:0x7f34bc24d487` was not available, trace may be incomplete

???:?:?: 0x7f34bc24d54a in ??? (libc.so.6)
???:?:?: 0x10635a4 in ??? (???)
zsh: IOT instruction (core dumped)  ./zig-out/bin/opengl