Tophat crashes on drawing an image stored in a local variable

[vtereshkov]

Code example:

import (
    "std.um"
    "th.um"
    "window.um"
    "image.um"
)

fn test() {
    img, err := image::mk({0, 0, 0, 0}, {2, 2})
    std::exitif(err)
    std::assert(img.validate())
    img.draw(th::mkTransform({0, 0}))
}

fn init*() {
    window::setup("Test", 800, 600)
    window::onFrame.register({
        test()      
    })
}

Result:

sg][error][id:308] lib/sokol/sokol_gfx.h:18483:0:
        VALIDATE_ABND_IMG_EXISTS: sg_apply_bindings: bound image no longer alive

[sg][error][id:318] lib/sokol/sokol_gfx.h:18514:0:
        VALIDATE_ABND_SMP_EXISTS: sg_apply_bindings: bound sampler no longer alive

[sg][panic][id:346] lib/sokol/sokol_gfx.h:17554:0:
        VALIDATION_FAILED: validation layer checks failed

ABORTING because of [panic]

[ske2004]

I see, this is because we don't call umkaIncRef/umkaDecRef since we render everything at the end of the frame.

[marekmaskarinec]

@ske2004 I think we can solve this by putting the free calls to some list to defer them to the end of the frame.