Render box reflections

What kind of hardware do you use to see this artifacts? Can you specify it? I can’t find them when watching the demo on my pc or phone.

Using Firefox 68.0.1 here on Win 10 Pro (ver 1903).
Nvidia GTX 1080 Ti w/ 431.36 drivers from 7/9/2019.
[Haven’t moved to 431.60 just yet. I try to wait at least two weeks before installing driver updates to give time for any bug reports to appear.]

Here’s a similar angle on the area dragosburian showed, with similar reflection-based artifacts.

Also attached is another angle with some markup to show the effect on other surfaces. It almost looks like the world background for reflections is being broken up and a seam (white) is being put between the faces, and then that seam is reflecting as a bright line at render time.

Sure. Soft8Soft WebGL report screenshots are attached.

And here is the report from Chrome:

Graphics Feature Status
Canvas: Hardware accelerated
Flash: Hardware accelerated
Flash Stage3D: Hardware accelerated
Flash Stage3D Baseline profile: Hardware accelerated
Compositing: Hardware accelerated
Multiple Raster Threads: Enabled
Native GpuMemoryBuffers: Software only. Hardware acceleration disabled
Out-of-process Rasterization: Disabled
Hardware Protected Video Decode: Unavailable
Rasterization: Hardware accelerated
Skia Renderer: Disabled
Surface Control: Disabled
Surface Synchronization: Enabled
Video Decode: Hardware accelerated
Viz Service Display Compositor: Enabled
Viz Hit-test Surface Layer: Disabled
WebGL: Hardware accelerated
WebGL2: Hardware accelerated
Driver Bug Workarounds
clear_uniforms_before_first_program_use
decode_encode_srgb_for_generatemipmap
disable_delayed_copy_nv12
disable_direct_composition_layers
disable_discard_framebuffer
exit_on_context_lost
force_cube_complete
scalarize_vec_and_mat_constructor_args
disabled_extension_GL_KHR_blend_equation_advanced
disabled_extension_GL_KHR_blend_equation_advanced_coherent
Problems Detected
Protected video decoding with swap chain is for Windows and Intel only
Disabled Features: protected_video_decode
Some drivers are unable to reset the D3D device in the GPU process sandbox
Applied Workarounds: exit_on_context_lost
Clear uniforms before first program use on all platforms: 124764, 349137
Applied Workarounds: clear_uniforms_before_first_program_use
Always rewrite vec/mat constructors to be consistent: 398694
Applied Workarounds: scalarize_vec_and_mat_constructor_args
ANGLE crash on glReadPixels from incomplete cube map texture: 518889
Applied Workarounds: force_cube_complete
Framebuffer discarding can hurt performance on non-tilers: 570897
Applied Workarounds: disable_discard_framebuffer
Disable KHR_blend_equation_advanced until cc shaders are updated: 661715
Applied Workarounds: disable(GL_KHR_blend_equation_advanced), disable(GL_KHR_blend_equation_advanced_coherent)
Decode and Encode before generateMipmap for srgb format textures on Windows: 634519
Applied Workarounds: decode_encode_srgb_for_generatemipmap
Delayed copy NV12 displays incorrect colors on NVIDIA drivers.: 728670
Applied Workarounds: disable_delayed_copy_nv12
Hardware overlays result in black videos on non-Intel GPUs: 932879
Applied Workarounds: disable_direct_composition_layers
Native GpuMemoryBuffers have been disabled, either via about:flags or command line.
Disabled Features: native_gpu_memory_buffers
Viz hit-test surface layer version is not enabled by default.
Disabled Features: viz_hit_test_surface_layer
Skia renderer is not used by default.
Disabled Features: skia_renderer
Version Information
Data exported 2019-07-30T08:38:36.352Z
Chrome version Chrome/75.0.3770.142
Operating system Windows NT 10.0.18362
Software rendering list URL https://chromium.googlesource.com/chromium/src/+/8d93477bd18154c67a70a67019cb8032382c55dd/gpu/config/software_rendering_list.json
Driver bug list URL https://chromium.googlesource.com/chromium/src/+/8d93477bd18154c67a70a67019cb8032382c55dd/gpu/config/gpu_driver_bug_list.json
ANGLE commit id b98a3d1c05e2
2D graphics backend Skia/75 e5b2375e28d85a6c8db771495b963670be28defd
Command Line “C:\Program Files (x86)\Google\Chrome\Application\chrome.exe” –flag-switches-begin –flag-switches-end
Driver Information
Initialization time 219
In-process GPU false
Passthrough Command Decoder false
Sandboxed true
GPU0 VENDOR = 0x10de [Google Inc.], DEVICE= 0x1b06 [ANGLE (NVIDIA GeForce GTX 1080 Ti Direct3D11 vs_5_0 ps_5_0)] *ACTIVE*
Optimus false
AMD switchable false
Desktop compositing Aero Glass
Direct composition true
Supports overlays false
Overlay capabilities
Diagonal Monitor Size of \\.\DISPLAY1 25.5″
Diagonal Monitor Size of \\.\DISPLAY1 129.7″
Diagonal Monitor Size of \\.\DISPLAY2 129.7″
Diagonal Monitor Size of \\.\DISPLAY3 129.7″
Diagonal Monitor Size of \\.\DISPLAY4 129.7″
Driver D3D12 feature level D3D 12.1
Driver Vulkan API version Vulkan API 1.1.0
Driver vendor NVIDIA
Driver version 431.36
Driver date 7-3-2019
GPU CUDA compute capability major version 6
Pixel shader version 5.0
Vertex shader version 5.0
Max. MSAA samples 8
Machine model name
Machine model version
GL_VENDOR Google Inc.
GL_RENDERER ANGLE (NVIDIA GeForce GTX 1080 Ti Direct3D11 vs_5_0 ps_5_0)
GL_VERSION OpenGL ES 2.0 (ANGLE 2.1.0.b98a3d1c05e2)
GL_EXTENSIONS GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_memory_size GL_ANGLE_multi_draw GL_ANGLE_multiview_multisample GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_provoking_vertex GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_lose_context GL_CHROMIUM_sync_query GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_float_blend GL_EXT_frag_depth GL_EXT_instanced_arrays GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_bptc GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_parallel_shader_compile GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_border_clamp GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object OES_compressed_EAC_R11_signed_texture OES_compressed_EAC_R11_unsigned_texture OES_compressed_EAC_RG11_signed_texture OES_compressed_EAC_RG11_unsigned_texture OES_compressed_ETC2_RGB8_texture OES_compressed_ETC2_RGBA8_texture OES_compressed_ETC2_punchthroughA_RGBA8_texture OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture OES_compressed_ETC2_sRGB8_alpha8_texture OES_compressed_ETC2_sRGB8_texture
Disabled Extensions GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent
Disabled WebGL Extensions
Window system binding vendor Google Inc. (adapter LUID: 000000000000da94)
Window system binding version 1.4 (ANGLE 2.1.0.b98a3d1c05e2)
Window system binding extensions EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_ANGLE_windows_ui_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_ANDROID_blob_cache EGL_ANDROID_recordable
Direct rendering version unknown
Reset notification strategy 0x8252
GPU process crash count 0
Compositor Information
Tile Update Mode One-copy
Partial Raster Enabled
GpuMemoryBuffers Status
R_8 Software only
R_16 Software only
RG_88 Software only
BGR_565 Software only
RGBA_4444 Software only
RGBX_8888 GPU_READ, SCANOUT
RGBA_8888 GPU_READ, SCANOUT
BGRX_8888 Software only
BGRX_1010102 Software only
RGBX_1010102 Software only
BGRA_8888 Software only
RGBA_F16 Software only
YVU_420 Software only
YUV_420_BIPLANAR Software only
UYVY_422 Software only
Display(s) Information
Info Display[2528732444] bounds=[0,0 1920×1200], workarea=[0,0 1920×1200], scale=1, external.
Color space information {primaries_d50_referred: [[0.6479, 0.3292], [0.3222, 0.5969], [0.1545, 0.0660]], transfer:GAMMA22, matrix:RGB, range:FULL}
Bits per color component 8
Bits per pixel 24
Video Acceleration Information
Decode h264 baseline up to 4096×2304 pixels
Decode h264 baseline up to 2304×4096 pixels
Decode h264 main up to 4096×2304 pixels
Decode h264 main up to 2304×4096 pixels
Decode h264 high up to 4096×2304 pixels
Decode h264 high up to 2304×4096 pixels
Decode vp8 up to 8192×8192 pixels
Decode vp8 up to 8192×8192 pixels
Decode vp9 profile0 up to 8192×8192 pixels
Decode vp9 profile0 up to 8192×8192 pixels
Decode vp9 profile2 up to 8192×8192 pixels
Decode vp9 profile2 up to 8192×8192 pixels
Encode h264 baseline up to 3840×2176 pixels and/or 30.000 fps
Encode h264 main up to 3840×2176 pixels and/or 30.000 fps
Encode h264 high up to 3840×2176 pixels and/or 30.000 fps
Diagnostics
0
b3DAccelerationEnabled true
b3DAccelerationExists true
bAGPEnabled true
bAGPExistenceValid true
bAGPExists true
bCanRenderWindow true
bDDAccelerationEnabled true
bDriverBeta false
bDriverDebug false
bDriverSigned false
bDriverSignedValid false
bNoHardware false
dwBpp 32
dwDDIVersion 12
dwHeight 1200
dwRefreshRate 59
dwWHQLLevel 0
dwWidth 1920
iAdapter 0
lDriverSize 957288
lMiniVddSize 0
szAGPStatusEnglish Enabled
szAGPStatusLocalized Enabled
szChipType GeForce GTX 1080 Ti
szD3DStatusEnglish Enabled
szD3DStatusLocalized Enabled
szDACType Integrated RAMDAC
szDDIVersionEnglish 12
szDDIVersionLocalized 12
szDDStatusEnglish Enabled
szDDStatusLocalized Enabled
szDXVAHDEnglish Supported
szDXVAModes
szDescription NVIDIA GeForce GTX 1080 Ti
szDeviceId 0x1B06
szDeviceIdentifier {D7B71E3E-5846-11CF-927B-07161BC2D735}
szDeviceName \\.\DISPLAY1
szDisplayMemoryEnglish 19286 MB
szDisplayMemoryLocalized 19286 MB
szDisplayModeEnglish 1920 x 1200 (32 bit) (59Hz)
szDisplayModeLocalized 1920 x 1200 (32 bit) (59Hz)
szDriverAssemblyVersion 26.21.14.3136
szDriverAttributes Final Retail
szDriverDateEnglish 7/2/2019 8:00:00 PM
szDriverDateLocalized 7/2/2019 20:00:00
szDriverLanguageEnglish English
szDriverLanguageLocalized English
szDriverModelEnglish WDDM 2.6
szDriverModelLocalized WDDM 2.6
szDriverName C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_4b310b124a4f2d9f\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_4b310b124a4f2d9f\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_4b310b124a4f2d9f\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_4b310b124a4f2d9f\nvldumdx.dll
szDriverNodeStrongName oem3.inf:0f066de35d9aeff6:Section094:26.21.14.3136:pci\ven_10de&dev_1b06
szDriverSignDate Unknown
szDriverVersion 26.21.0014.3136
szKeyDeviceID Enum\PCI\VEN_10DE&DEV_1B06&SUBSYS_36091462&REV_A1
szKeyDeviceKey \Registry\Machine\System\CurrentControlSet\Control\Video\{5CD3CCF6-93EF-11E9-BAC8-7085C267BF43}\0000
szManufacturer NVIDIA
szMiniVdd unknown
szMiniVddDateEnglish Unknown
szMiniVddDateLocalized unknown
szMonitorMaxRes Unknown
szMonitorName HP LP2475w Wide LCD Monitor
szNotesEnglish No problems found.
szNotesLocalized No problems found.
szOverlayEnglish Supported
szRankOfInstalledDriver 00D12001
szRegHelpText Unknown
szRevision Unknown
szRevisionId 0x00A1
szSubSysId 0x36091462
szTestResultD3D7English Not run
szTestResultD3D7Localized Not run
szTestResultD3D8English Not run
szTestResultD3D8Localized Not run
szTestResultD3D9English Not run
szTestResultD3D9Localized Not run
szTestResultDDEnglish Not run
szTestResultDDLocalized Not run
szVdd unknown
szVendorId 0x10DE
Log Messages
[4572:15976:0730/043756.137:WARNING:angle_platform_impl.cc(52)] : compileToBinary(259): C:\fakepath(62,9-59): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them C:\fakepath(74,9-29): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them
[4572:20088:0730/043756.148:WARNING:angle_platform_impl.cc(52)] : compileToBinary(259): C:\fakepath(59,9-59): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them C:\fakepath(71,9-29): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them
[4572:15852:0730/043756.156:WARNING:angle_platform_impl.cc(52)] : compileToBinary(259): C:\fakepath(40,9-59): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them C:\fakepath(52,9-29): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them
[4572:20184:0730/043756.323:WARNING:angle_platform_impl.cc(52)] : compileToBinary(259): C:\fakepath(75,10-54): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them C:\fakepath(97,10-54): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them
[4572:10284:0730/043801.921:WARNING:angle_platform_impl.cc(52)] : compileToBinary(259): C:\fakepath(60,9-59): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them C:\fakepath(72,9-29): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them
GpuProcessHostUIShim:
[4572:21104:0730/043833.471:WARNING:angle_platform_impl.cc(52)] : compileToBinary(259): C:\fakepath(60,9-59): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them C:\fakepath(72,9-29): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them
GpuProcessHostUIShim: