Render breaks after several map loads

[Dreikblack]

Can't reproduce it yet in simple example since it tends to happen with big maps with many entities.

In my game it can be reproduced by:

1. New game or Choose Map ->Easy Map -> Ok

2. F5 to quick save

3. After a second (have a delay to prevent other issue with double click) press F9 for quick load.

4, Do Quick Load 5+ times and eventually it either HUD became invisible fully or partly (buttons still can be pressed so it's not sudden UI->SetHidden anywhere) or game stuckes on Loading screen, but in fact game is just not being rendered - "Error: Invalid value" in console after every world->Render()

Another way is starting new game, returning to main menu and starting again.

Also beside HUD also anything transparent seems to be non rendered - shotgun cones, fog cubes, blood decals. And for some reason gibs invisible too (they only thing with a physics tho).

[Dreikblack]

After UI update HUD is working, but is not rendered anymore after 5+ loads

[klepto2]

Might be related to this:

it happens as soon as generated meshes or instances go beyond a certain value.

[Josh]

On 2/12/2025 at 1:05 PM, klepto2 said:

Might be related to this:

it happens as soon as generated meshes or instances go beyond a certain value.

This issue is resolved.

@DreikblackDo you still experience this problem with the current build?

[Dreikblack]

6 hours ago, Josh said:

@DreikblackDo you still experience this problem with the current build?

Yes. Now it's takes twice longer and before it happens another render bug happens:

1. Random visual artifacts - black strip, cubes. Visible only at some angles.

2. No outlines.

3. No sprites.

4. No brush circles under characters.

[Josh]

Okay, thanks for the info. I am going through all reports.

[Dreikblack]

Tried in debug with Easy map - render broke on 11th reload (only HUD visible, like in 2nd post).

No errors in console. btw memory usage keep increasing a bit with load, was something like 2 GB when issue appeared.

[Dreikblack]

Tried to reproduce it in FPS template. For some reason loading background is not stuck as in my game, but rendering in general breaks in strange ways after 20-30 loads:

Just replace main in FPS template project and keep hitting F9 after load until you get you similar result:

#include "Leadwerks.h"
#include "ComponentSystem.h"
#include "Encryption.h"

using namespace Leadwerks;

shared_ptr<Scene> scene;
shared_ptr<Framebuffer> framebuffer;
shared_ptr<World> world;
shared_ptr<World> loadingWorld;
shared_ptr<Interface> ui;
shared_ptr<Font> font;
iVec2 framebufferSize;
shared_ptr<Widget> btn;

shared_ptr<Sprite> loadingBackground;
shared_ptr<Camera> loadingCamera;


void initScene() {
    loadingWorld->Render(framebuffer);
    world = CreateWorld();
    WString mapname = "Maps/start.map";
    scene = LoadScene(world, mapname);
    for (auto const& entity : world->GetEntities()) {
        auto camera = entity->As<Camera>();
        if (camera) {
            ui = CreateInterface(camera, font, framebufferSize);
            ui->root->SetColor(0.0f, 0.0f, 0.0f, 0.0f);
            btn = CreateButton("Test",100, 100, 100, 100, ui->root);
            break;
        }
    }
}

int main(int argc, const char* argv[])
{
    RegisterComponents();
    auto displays = GetDisplays();
    auto window = CreateWindow("Leadwerks", 0, 0, 1280 * displays[0]->scale, 720 * displays[0]->scale, displays[0], WINDOW_CENTER | WINDOW_TITLEBAR);
    framebuffer = CreateFramebuffer(window); 

    font = LoadFont("Fonts/arial.ttf");
    framebufferSize = framebuffer->GetSize();

    loadingWorld = CreateWorld();
    loadingBackground = CreateSprite(loadingWorld, framebuffer->size.width, framebuffer->size.height);
    loadingBackground->SetColor(0.3f, 0.2f, 0.2f);
    loadingCamera = CreateCamera(loadingWorld, PROJECTION_ORTHOGRAPHIC);
    loadingCamera->SetPosition(framebufferSize.x * 0.5f, framebufferSize.y * 0.5f, 0);

    initScene();

    //Main loop
    while (window->Closed() == false and window->KeyDown(KEY_ESCAPE) == false)
    {
        if (window->KeyDown(KEY_F9)) {
            initScene();
        }
        world->Update();
        world->Render(framebuffer);
    }

    return 0;
}

 

[Josh]

We know there is a memory leak in the map loader, There is a good chance these things may be related.