pixijs/pixijs · error · Error

[RenderTargetSystem] pop: no previous binding to restore (un

Error message

[RenderTargetSystem] pop: no previous binding to restore (unbalanced pop)

What it means

Thrown by RenderTargetSystem.pop() when, after popping the current binding, the stack is empty — meaning pop was called more times than bind/push. The system must always be able to restore a previous binding; an unbalanced pop indicates a mismatched push/pop pair in render flow.

Source

Thrown at src/rendering/renderers/shared/renderTarget/RenderTargetSystem.ts:810

            flipY: options.flipY,
        });

        return renderTarget;
    }

    /**
     * Pops the current render target and restores the previous binding.
     * @returns the render target that was restored
     */
    public pop(): RenderTarget
    {
        this._renderTargetStack.pop();

        const previous = this._renderTargetStack[this._renderTargetStack.length - 1];

        if (!previous)
        {
            throw new Error('[RenderTargetSystem] pop: no previous binding to restore (unbalanced pop)');
        }

        return this.bind(previous);
    }

    /**
     * Gets the render target from the provide render surface. Eg if its a texture,
     * it will return the render target for the texture.
     * If its a render target, it will return the same render target.
     * @param renderSurface - the render surface to get the render target for
     * @returns the render target for the render surface
     */
    public getRenderTarget(renderSurface: RenderSurface): RenderTarget
    {
        if (((renderSurface as Texture).isTexture))
        {
            renderSurface = (renderSurface as Texture).source;
        }

View on GitHub (pinned to 4b141e3ced)

Solutions

Ensure every pop() corresponds to exactly one prior push()/bind() in the same scope — use try/finally to guarantee pop runs once per push.
Track push/pop depth in a wrapper or assertion in dev builds to catch imbalance early.
Avoid calling pop() in error/early-exit branches unless the matching push already ran.

Example fix

// before
renderTargetSystem.push(surface);
doWork();
if (error) return; // skips pop -> later pop throws
renderTargetSystem.pop();
// after
renderTargetSystem.push(surface);
try { doWork(); }
finally { renderTargetSystem.pop(); }

Defensive patterns

Strategy: try-catch

Try / catch

renderTargetSystem.push(surface);
try { doWork(); }
finally { if (renderTargetSystem.renderTarget) renderTargetSystem.pop(); }

Prevention

Always wrap push/pop in try/finally so pop runs exactly once per push.
Add dev-mode assertions tracking stack depth to detect imbalance early.

When it happens

Trigger: Calling renderTargetSystem.pop() without a preceding push/bind, or calling pop() twice for a single push(). Often surfaces in custom render passes or filters that manage their own target stack.

Common situations: Early-return paths that skip a push but still execute pop; exception handling that unwinds past a pop; copy-pasting render-pass code that omits the matching push.

Related errors

AI-assisted analysis of pixijs/pixijs@4b141e3ced (2026-08-12). Data as JSON: /api/errors/2648302536f0cc5b. Report an issue: GitHub.