Re-enable GUI Near Menu test on D3D11 (idx 177)

[bkaradzic-microsoft]

Summary

Re-enables validation_native.js test idx 177 GUI Near Menu (#2YZFA0#302) on D3D11 and adds an OpenGL-only exclusion for the residual fragment-shader-compile crash.

What changed

The original exclusion reason was:

"Test crashes on Win32 V8 D3D11 / hangs on OpenGL"

Both halves of that statement are now stale:

1. Win32 D3D11 (Chakra Release x64): the test now runs to completion with 783 px diff (well under the 2.5% errorRatio threshold) and validates. The original Win32 V8 D3D11 ACCESS_VIOLATION was specific to the V8 cascade and is no longer reproducible on Chakra. Other V8-cascade victims in config.json keep their own exclusion reasons.

2. OpenGL (Windows ANGLE + Linux native OpenGL): the test no longer "hangs". With the console hook landed in Improve Playground debuggability. #1688 and the bgfx FATAL routed through BgfxCallback, the previous silent hang is now a clean shader-compile failure:

   BGFX FATAL 0x00000001: Failed to compile shader.
   ERROR: 0:266: '=' : cannot convert from 'highp float' to 'bool'
   ERROR: 0:267: '=' : cannot convert from 'highp float' to 'bool'
   ERROR: 0:389: '=' : cannot convert from 'highp float' to 'bool'
   

   This is the same family of GLSL implicit-precision-conversion bug already affecting idx 293/296/299 (mediump float -> int in the PrePassRenderer fragment shader); here the conversion is highp float -> bool in a GUI fragment shader. Tracked separately for the OpenGL backend; for now the test is gated with excludedGraphicsApis: ["OpenGL"].

Verification

# D3D11 (Chakra) sweep covering idx 177:
.\Playground.exe --headless --test-index=150-200 app:///Scripts/validation_native.js
# -> ran=2 passed=2 failed=0 skipped=49, exit 0
# -> "Test 'GUI Near Menu' validated" with 783 px diff

# Windows ANGLE / OpenGL sweep covering idx 177:
.\Playground.exe --headless --test-index=150-200 app:///Scripts/validation_native.js  (OpenGLWindowsDevOnly build)
# -> ran=1 passed=1 failed=0 skipped=50, exit 0
# -> "Skipping 'GUI Near Menu' -- excludedGraphicsApis: OpenGL"

Notes

• This is a config-only change (one entry in Apps/Playground/Scripts/config.json); the binary build is unaffected.
• The excludedGraphicsApis mechanism added in Bump SPIRV-Cross to 866e5edcc3407997a3ed62f3edf492f91bcb2629 (Expose more functions #10) #1695 is reused here to keep the test running on every backend where it works while gating it on backends where it doesn't.

Co-authored-by: Copilot 223556219+Copilot@users.noreply.github.com