{"record":{"id":"ebb74334fa5955cb","repo":"remotion-dev/remotion","slug":"failed-to-create-webgl-program-ebb743","errorCode":null,"errorMessage":"Failed to create WebGL program","messagePattern":"Failed to create WebGL program","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"critical","filePath":"packages/effects/src/halftone-linear-gradient.ts","lineNumber":399,"sourceCode":"\tif (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {\n\t\tconst log = gl.getShaderInfoLog(shader);\n\t\tgl.deleteShader(shader);\n\t\tthrow new Error(\n\t\t\t`Halftone linear gradient shader compile failed: ${log ?? '(no log)'}`,\n\t\t);\n\t}\n\n\treturn shader;\n};\n\nconst linkProgram = (\n\tgl: WebGL2RenderingContext,\n\tvs: WebGLShader,\n\tfs: WebGLShader,\n): WebGLProgram => {\n\tconst program = gl.createProgram();\n\tif (!program) {\n\t\tthrow new Error('Failed to create WebGL program');\n\t}\n\n\tgl.attachShader(program, vs);\n\tgl.attachShader(program, fs);\n\tgl.linkProgram(program);\n\tif (!gl.getProgramParameter(program, gl.LINK_STATUS)) {\n\t\tconst log = gl.getProgramInfoLog(program);\n\t\tgl.deleteProgram(program);\n\t\tthrow new Error(\n\t\t\t`Halftone linear gradient program link failed: ${log ?? '(no log)'}`,\n\t\t);\n\t}\n\n\treturn program;\n};\n\nexport const halftoneLinearGradient = createEffect<\n\tHalftoneLinearGradientParams,","sourceCodeStart":381,"sourceCodeEnd":417,"githubUrl":"https://github.com/remotion-dev/remotion/blob/78fe4bb3fdb5a2cd68724393d63cb223db333fa7/packages/effects/src/halftone-linear-gradient.ts#L381-L417","documentation":"Thrown by halftone-linear-gradient's linkProgram (halftone-linear-gradient.ts:399) when gl.createProgram() returns null. Like the null-shader case, a null program indicates a lost WebGL2 context or severe resource exhaustion; the library cannot call attachShader/linkProgram on null.","triggerScenarios":"Called during setup after both shaders compiled successfully (line 448). Triggered by a lost context, or by accumulated GL objects exhausting the driver's program budget.","commonSituations":"Long renders leaking programs; many concurrent WebGL effects/compositions; GPU reset mid-render; constrained software renderer.","solutions":["Handle webglcontextlost; recreate state on webglcontextrestored.","Ensure cleanup() deletes programs (halftone cleanup frees the program).","Limit concurrent WebGL2 effects; render sequentially.","Restart browser/GPU; update drivers if the failure is reproducible."],"exampleFix":"// before: setup per render, no teardown -> programs leak -> null\nconst state = halftone.setup(canvas);\n\n// after: setup once, pair with cleanup\nuseEffect(() => {\n  const state = halftone.setup(canvas);\n  return () => halftone.cleanup(state);\n}, []);","handlingStrategy":"try-catch","validationCode":"if (gl.isContextLost()) {\n  throw new Error('WebGL2 context lost; cannot create program');\n}","typeGuard":"null","tryCatchPattern":"try {\n  halftoneLinearGradient.setup(canvas);\n} catch (e) {\n  if (e instanceof Error && e.message === 'Failed to create WebGL program') {\n    // context loss / resource exhaustion\n  }\n  throw e;\n}","preventionTips":["Handle context loss and rebuild on restore.","Free programs in cleanup().","Limit concurrent WebGL effects/compositions.","Restart browser/GPU when allocation failures become persistent."],"tags":["webgl","halftone-linear-gradient-effect","program","gpu","resource-exhaustion"],"backgroundTag":null,"analyzedSha":"78fe4bb3fdb5a2cd68724393d63cb223db333fa7","analyzedAt":"2026-08-12T17:18:50.444Z","schemaVersion":2},"datasetVersion":"2026-08-12T18:17:37.767Z"}