siyuan-note/siyuan · error · Error

Unable to allocate graph rendering resource

Error message

Unable to allocate graph rendering resource

What it means

Generic resource-allocation guard inside GraphWebGLRenderer (requireValue): a WebGL object creation or location lookup returned null/zero — e.g. createShader, createProgram, or getUniformLocation failed — so a required graph rendering resource could not be allocated.

Solutions

1. Free WebGL resources and contexts to relieve GPU memory pressure
2. Check uniform names in shader source match lookups
3. Update GPU drivers or fall back to the canvas renderer

When it happens

Trigger: Thrown at app/src/layout/dock/graph/webglRenderer.ts:534 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of siyuan-note/siyuan@8641553a1f (2026-09-11). Data as JSON: /api/errors/a30e0a95345d97b4. Report an issue: GitHub.

Appendix: source

Thrown at app/src/layout/dock/graph/webglRenderer.ts:534

        const gl = this.gl;
        const shader = this.requireValue(gl.createShader(type));
        gl.shaderSource(shader, source);
        gl.compileShader(shader);
        if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
            const message = gl.getShaderInfoLog(shader) || "Unable to compile graph shader";
            gl.deleteShader(shader);
            throw new Error(message);
        }
        return shader;
    }

    private getUniform(program: WebGLProgram, name: string) {
        return this.requireValue(this.gl.getUniformLocation(program, name));
    }

    private requireValue<T>(value: T | null): T {
        if (value === null) {
            throw new Error("Unable to allocate graph rendering resource");
        }
        return value;
    }
}

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