rsInvalidElement android runtime_error ai_generated true

FATAL EXCEPTION: RSMessageThread. Error: rsInvalidElement: invalid element at libs/renderscript/rsCpuCore.c:1234

ID: android/renderscript-rs-invalid-element

Also available as: JSON · Markdown · 中文
78%Fix Rate
85%Confidence
1Evidence
2023-03-15First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
Android 8.0 (API 26) active — — —
Android 10 (API 29) active — — —
Android 12 (API 31) active — — —

Root Cause

RenderScript allocation or kernel operation uses an incorrectly defined or mismatched Element type, often due to mixing float and int types in script or passing wrong allocation to forEach.

generic

中文

RenderScript 分配或内核操作使用了错误定义或不匹配的 Element 类型，通常是由于在脚本中混合使用浮点型和整型，或将错误的分配传递给 forEach。

Official Documentation

https://developer.android.com/guide/topics/renderscript

Workarounds

  1. 85% success In your .rs script, ensure all allocations use matching Element types. For example, if passing a float allocation, define the kernel with `__attribute__((kernel)) void root(const float *v_in, float *v_out)` and create the allocation with `Element.F32(rs)`. Do not mix int and float. 
    In your .rs script, ensure all allocations use matching Element types. For example, if passing a float allocation, define the kernel with `__attribute__((kernel)) void root(const float *v_in, float *v_out)` and create the allocation with `Element.F32(rs)`. Do not mix int and float.
  2. 80% success Replace RenderScript with Android's NDK or custom C++ code using `android::renderscript::RS` API, and validate Element creation with `rsCreateElement()` using correct data type enum (e.g., `RS_TYPE_FLOAT_32`). 
    Replace RenderScript with Android's NDK or custom C++ code using `android::renderscript::RS` API, and validate Element creation with `rsCreateElement()` using correct data type enum (e.g., `RS_TYPE_FLOAT_32`).

中文步骤

  1. In your .rs script, ensure all allocations use matching Element types. For example, if passing a float allocation, define the kernel with `__attribute__((kernel)) void root(const float *v_in, float *v_out)` and create the allocation with `Element.F32(rs)`. Do not mix int and float.
  2. Replace RenderScript with Android's NDK or custom C++ code using `android::renderscript::RS` API, and validate Element creation with `rsCreateElement()` using correct data type enum (e.g., `RS_TYPE_FLOAT_32`).

Dead Ends

Common approaches that don't work:

  1. 95% fail

    The error is not a runtime state issue but a script or allocation definition bug; clearing cache does not fix incorrect Element types.

  2. 90% fail

    The error occurs regardless of SDK version if the Element definition in the script is invalid; changing minSdkVersion does not correct the script logic.