{"record":{"id":"2e5fdaeca4686572","repo":"remotion-dev/remotion","slug":"program-link-failed-log-no-log-2e5fda","errorCode":null,"errorMessage":"Program link failed: ${log ?? '(no log)'}","messagePattern":"Program link failed: (.+?)","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"packages/effects/src/region-blur/region-blur-runtime.ts","lineNumber":122,"sourceCode":"\tvertexSource: string,\n\tfragmentSource: string,\n): WebGLProgram => {\n\tconst vertexShader = compileShader(gl, gl.VERTEX_SHADER, vertexSource);\n\tconst fragmentShader = compileShader(gl, gl.FRAGMENT_SHADER, fragmentSource);\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, vertexShader);\n\tgl.attachShader(program, fragmentShader);\n\tgl.linkProgram(program);\n\tgl.deleteShader(vertexShader);\n\tgl.deleteShader(fragmentShader);\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(`Program link failed: ${log ?? '(no log)'}`);\n\t}\n\n\treturn program;\n};\n\nconst createTexture = (gl: WebGL2RenderingContext): WebGLTexture => {\n\tconst texture = gl.createTexture();\n\tif (!texture) {\n\t\tthrow new Error('Failed to create WebGL texture');\n\t}\n\n\tgl.bindTexture(gl.TEXTURE_2D, texture);\n\tgl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);\n\tgl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);\n\tgl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);\n\tgl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);\n\tgl.bindTexture(gl.TEXTURE_2D, null);\n\treturn texture;","sourceCodeStart":104,"sourceCodeEnd":140,"githubUrl":"https://github.com/remotion-dev/remotion/blob/78fe4bb3fdb5a2cd68724393d63cb223db333fa7/packages/effects/src/region-blur/region-blur-runtime.ts#L104-L140","documentation":"The region-blur runtime links compiled vertex and fragment shaders into a GPU program via gl.linkProgram. If LINK_STATUS is false after linking, the effect deletes the program and throws with the driver's info log. Link failures occur when individually-valid shaders have incompatible interfaces or exceed driver limits at link time.","triggerScenarios":"Varying declarations differ between vertex and fragment shaders; the combined program exceeds the driver's maximum uniform/varying count; shader stages use inconsistent precision qualifiers that the driver rejects at link time.","commonSituations":"Effect source code changes that break the varying contract between stages; stricter link-time validation on certain mobile drivers; GPU memory pressure causing false link failures.","solutions":["Read the info log to find the mismatched varying, attribute, or exceeded limit","Update GPU drivers to resolve known link-time false negatives","If a limit is exceeded, reduce shader complexity","Report the issue with driver details and the info log"],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":"try {\n  regionBlur({ topLeft: [0.2, 0.2], bottomRight: [0.8, 0.8] });\n} catch (err) {\n  if (err instanceof Error && err.message.includes('Program link failed')) {\n    console.error('GPU program link failed for regionBlur:', err.message);\n  }\n  throw err;\n}","preventionTips":["Update GPU drivers to eliminate false link failures","Test on multiple GPU vendors","Report repeatable link failures with the info log"],"tags":["webgl","shader","gpu","program-link","region-blur"],"backgroundTag":null,"analyzedSha":"78fe4bb3fdb5a2cd68724393d63cb223db333fa7","analyzedAt":"2026-08-12T17:18:50.444Z","schemaVersion":2},"datasetVersion":"2026-08-12T18:17:37.767Z"}