{"record":{"id":"78875967564ef9ea","repo":"remotion-dev/remotion","slug":"failed-to-create-webgl-buffer-788759","errorCode":null,"errorMessage":"Failed to create WebGL buffer","messagePattern":"Failed to create WebGL buffer","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"packages/effects/src/dot-grid.ts","lineNumber":234,"sourceCode":"\t\tconst fs = compileShader(gl, gl.FRAGMENT_SHADER, DOT_GRID_FS);\n\t\tconst program = linkProgram(gl, vs, fs);\n\t\tgl.deleteShader(vs);\n\t\tgl.deleteShader(fs);\n\n\t\tconst vao = gl.createVertexArray();\n\t\tif (!vao) {\n\t\t\tthrow new Error('Failed to create WebGL vertex array');\n\t\t}\n\n\t\tgl.bindVertexArray(vao);\n\n\t\tconst data = new Float32Array([\n\t\t\t-1, -1, 0, 0, 1, -1, 1, 0, -1, 1, 0, 1, 1, 1, 1, 1,\n\t\t]);\n\n\t\tconst vbo = gl.createBuffer();\n\t\tif (!vbo) {\n\t\t\tthrow new Error('Failed to create WebGL buffer');\n\t\t}\n\n\t\tgl.bindBuffer(gl.ARRAY_BUFFER, vbo);\n\t\tgl.bufferData(gl.ARRAY_BUFFER, data, gl.STATIC_DRAW);\n\n\t\tconst aPos = gl.getAttribLocation(program, 'aPos');\n\t\tconst aUv = gl.getAttribLocation(program, 'aUv');\n\t\tgl.enableVertexAttribArray(aPos);\n\t\tgl.vertexAttribPointer(aPos, 2, gl.FLOAT, false, 16, 0);\n\t\tgl.enableVertexAttribArray(aUv);\n\t\tgl.vertexAttribPointer(aUv, 2, gl.FLOAT, false, 16, 8);\n\n\t\tgl.bindVertexArray(null);\n\n\t\tconst texture = gl.createTexture();\n\t\tif (!texture) {\n\t\t\tthrow new Error('Failed to create WebGL texture');\n\t\t}","sourceCodeStart":216,"sourceCodeEnd":252,"githubUrl":"https://github.com/remotion-dev/remotion/blob/78fe4bb3fdb5a2cd68724393d63cb223db333fa7/packages/effects/src/dot-grid.ts#L216-L252","documentation":"Thrown by dot-grid's setup() when gl.createBuffer() returns null. A null buffer signals a lost or exhausted WebGL2 context. Reached immediately after the VAO is bound, while allocating the fullscreen-quad vertex buffer.","triggerScenarios":"Lost WebGL2 context, exhausted buffer object limit, or GPU memory pressure during dotGrid().setup().","commonSituations":"Buffer leaks from effects whose cleanup never ran; many simultaneous effects; GPU driver crash; headless rendering under memory pressure.","solutions":["Verify the effect lifecycle runs cleanup (gl.deleteBuffer in dot-grid cleanup).","Cut down the number of WebGL2 effects mounted at once.","Reload to release leaked resources.","Use SwiftShader with adequate memory for headless runs.","Update GPU drivers."],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":"const supportsWebGL2 = () => {\n  try {\n    return !!document.createElement('canvas').getContext('webgl2');\n  } catch {\n    return false;\n  }\n};","typeGuard":null,"tryCatchPattern":"try {\n  state = dotGrid().setup(canvas);\n} catch (err) {\n  if (err instanceof Error && /WebGL buffer/i.test(err.message)) {\n    console.error('Buffer allocation failed:', err.message);\n  } else {\n    throw err;\n  }\n}","preventionTips":["Verify cleanup runs (gl.deleteBuffer) on unmount.","Reduce simultaneous WebGL2 effects; reload to free leaked buffers.","Use SwiftShader with adequate memory for headless rendering; update drivers."],"tags":["webgl2","dot-grid","buffer","gpu","runtime"],"backgroundTag":null,"analyzedSha":"78fe4bb3fdb5a2cd68724393d63cb223db333fa7","analyzedAt":"2026-08-12T17:18:50.444Z","schemaVersion":2},"datasetVersion":"2026-08-12T23:17:12.415Z"}