[POC] GL_RENDERER: WebKit WebGL
[POC] UNMASKED_RENDERER: ANGLE (Mesa/X.org, llvmpipe (LLVM 15.0.6 256 bits), OpenGL 4.5)
[POC] UNMASKED_VENDOR:   Google Inc. (Mesa/X.org)
[POC] 
[POC] [CONTROL] uniform mat4 m[67108864]  (4 GiB, plain uniform array)
[POC]   compile status: FAIL
[POC]   info log: ERROR: 0:3: 'm' : Size of declared variable exceeds implementation-defined limit
[POC]   hit checkVariableSize: YES
[POC] 
[POC] [BYPASS]  uniform Huge { mat4 m[67108864]; } b  (4 GiB, UBO)
[POC]   compile status: FAIL
[POC]   info log: ERROR: 0:3: 'b' : Size of declared variable exceeds implementation-defined limit
[POC]   hit checkVariableSize: YES
[POC] 
[POC] [TRANSLATED] translated UBO shader length=0
[POC] --- translated source (head, 30 lines) ---
[POC]   
[POC] --- end ---
[POC] 
[POC] ===================================================================
[POC] VERDICT: bypass not observed -- control=true ubo=true
[POC] ===================================================================
[STRESS] UNMASKED_RENDERER: ANGLE (Mesa/X.org, llvmpipe (LLVM 15.0.6 256 bits), OpenGL 4.5)
[STRESS] 
[STRESS] [FAIL] mat4[67108864] = 4 GiB (uint32 wrap to 0)
[STRESS]        ERROR: 0:3: 'b' : Size of declared variable exceeds implementation-defined limit
[STRESS] [PASS] mat4[33554432] = 2 GiB (int32 wrap negative)
[STRESS]        translated contains: [33554432]
[STRESS] [PASS] mat4[33554431] = 2 GiB - 64 (just under int32 max)
[STRESS]        translated contains: [33554431]
[STRESS] [PASS] vec4[134217728] = 2 GiB (int32 wrap, vec4 stride)
[STRESS]        translated contains: [134217728]
[STRESS] [FAIL] mat4[33554432] + vec4 trailer (cross-wrap layout)
[STRESS]        ERROR: 0:3: 'b' : Size of declared variable exceeds implementation-defined limit
[STRESS] [FAIL] mat4[2147483647] = 128 GiB (INT_MAX elements)
[STRESS]        ERROR: 0:3: 'b' : Size of declared variable exceeds implementation-defined limit
[STRESS] [FAIL] mat4[67108864] referenced (b.m[0])
[STRESS]        ERROR: 0:3: 'b' : Size of declared variable exceeds implementation-defined limit
[STRESS] 
[STRESS] All UBO declarations bypassed checkVariableSize and reached the driver.