Questions about Backend D3D9 vs D3D11

[Thierry Lefebvre]

Hi,

I've two PCs, both under windows 7 and with the same version of Chrome (38.0.2125.101) and ANGLE 1.4 (ANGLE 2.1.b5af678b07f7).

D3D11 seems to be correctly installed on both PCs and graphic drivers are up to date.

On the First PCs, the backend is D3D11 : ANGLE (NVIDIA Quadro K2000M Direct3D11 vs_5_0 ps_5_0)

On the sedond, the backend is D3D9 : ANGLE (NVIDIA Quadro K2000 Direct3D9Ex vs_3_0 ps_3_0)

The associated problem for me is the max number of available varying variables in shader : 28 for D3D11 but only 10 with D3D9.

So my questions are Why ? And what can i do to make ANGLE relying on D3D11 Backend ?

Thank you very much for your help !

Best regards,

Thierry.

[Shannon Woods]

Hi Thierry,

Some machines are blacklisted from D3D11 in Chrome due to hardware or driver issues. Could you post the about:gpu page from the machine which uses the D3D9 backend? We may be able to identify the reason for the blacklisting from that.

Thanks,

Shannon

[Thierry Lefebvre]

Hi Shannon,

Thank you for your response :)

Please find below the about://gpu informations : 

Thanks again !

Graphics Feature Status

• Canvas: Hardware accelerated
• Flash: Hardware accelerated
• Flash Stage3D: Hardware accelerated
• Flash Stage3D Baseline profile: Hardware accelerated
• Compositing: Hardware accelerated
• Rasterization: Software only. Hardware acceleration disabled
• Threaded Rasterization: Disabled
• Video Decode: Hardware accelerated
• Video Encode: Hardware accelerated
• WebGL: Hardware accelerated

Driver Bug Workarounds

• clear_uniforms_before_first_program_use
• exit_on_context_lost
• texsubimage2d_faster_than_teximage2d
• use_current_program_after_successful_link

Problems Detected

• Always call glUseProgram after a successful link to avoid a driver bug: 349137
  Applied Workarounds: use_current_program_after_successful_link
• Some drivers are unable to reset the D3D device in the GPU process sandbox
  Applied Workarounds: exit_on_context_lost
• TexSubImage2D() is faster for full uploads on ANGLE
  Applied Workarounds: texsubimage2d_faster_than_teximage2d
• Clear uniforms before first program use on all platforms: 124764, 349137
  Applied Workarounds: clear_uniforms_before_first_program_use
• Accelerated rasterization has been disabled, either via about:flags or command line.
  Disabled Features: rasterization
• Threaded rasterization has not been enabled or is not supported by the current system.
  Disabled Features: threaded_rasterization

Version Information

Data exported	10/15/2014, 9:30:48 AM
Chrome version	Chrome/38.0.2125.101
Operating system	Windows NT 6.1 SP1
Software rendering list version	0
Driver bug list version	7.2
ANGLE commit id	b5af678b07f7
2D graphics backend	Skia
Command Line Args	Files (x86)\Google\Chrome\Application\chrome.exe" --flag-switches-begin --ignore-gpu-blacklist --flag-switches-end

Performance Information

Graphics	7.2
Gaming	7.2
Overall	5.9

Driver Information

Initialization time	296
Sandboxed	false
GPU0	VENDOR = 0x10de, DEVICE= 0x0ffe
Optimus	false
AMD switchable	false
Desktop compositing	Aero Glass
Driver vendor	NVIDIA
Driver version	9.18.13.4084
Driver date	9-12-2014
Pixel shader version	3.0
Vertex shader version	3.0
Machine model name
Machine model version
GL_VENDOR	Google Inc.
GL_RENDERER

ANGLE (NVIDIA Quadro K2000 Direct3D9Ex vs_3_0 ps_3_0)

GL_VERSION	OpenGL ES 2.0 (ANGLE 2.1.b5af678b07f7)
GL_EXTENSIONS	GL_OES_element_index_uint GL_OES_packed_depth_stencil GL_OES_get_program_binary GL_OES_rgb8_rgba8 GL_EXT_texture_format_BGRA8888 GL_EXT_read_format_bgra GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_float GL_OES_texture_float_linear GL_EXT_texture_rg GL_EXT_texture_compression_dxt1 GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_EXT_sRGB GL_ANGLE_depth_texture GL_EXT_texture_storage GL_OES_texture_npot GL_EXT_texture_filter_anisotropic GL_EXT_occlusion_query_boolean GL_NV_fence GL_EXT_robustness GL_EXT_blend_minmax GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_pack_reverse_row_order GL_OES_standard_derivatives GL_EXT_shader_texture_lod GL_EXT_frag_depth GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source
Window system binding vendor	Google Inc. (adapter LUID: 000000000000d668)
Window system binding version	1.4 (ANGLE 2.1.b5af678b07f7)
Window system binding extensions	EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_NV_post_sub_buffer EGL_KHR_create_context
Direct rendering	Yes
Reset notification strategy	0x8252
GPU process crash count	0

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 11 dwHeight 1080 dwRefreshRate 60 dwWHQLLevel 0 dwWidth 1920 iAdapter 0 lDriverSize 17552560 lMiniVddSize 0 szAGPStatusEnglish Enabled szAGPStatusLocalized Enabled szChipType Quadro K2000 szD3DStatusEnglish Enabled szD3DStatusLocalized Enabled szDACType Integrated RAMDAC szDDIVersionEnglish 11 szDDIVersionLocalized 11 szDDStatusEnglish Enabled szDDStatusLocalized Enabled szDXVAHDEnglish Supported szDXVAModes ModeMPEG2_A ModeMPEG2_C ModeVC1_C ModeWMV9_C szDescription NVIDIA Quadro K2000 szDeviceId 0x0FFE szDeviceIdentifier {D7B71E3E-4CBE-11CF-9A7C-41291CC2C435} szDeviceName \\.\DISPLAY1 szDisplayMemoryEnglish 1692 MB szDisplayMemoryLocalized 1692 MB szDisplayModeEnglish 1920 x 1080 (32 bit) (60Hz) szDisplayModeLocalized 1920 x 1080 (32 bit) (60Hz) szDriverAssemblyVersion 9.18.13.4084 szDriverAttributes Final Retail szDriverDateEnglish 9/12/2014 13:56:56 szDriverDateLocalized 9/12/2014 1:56:56 PM szDriverLanguageEnglish English szDriverLanguageLocalized English szDriverModelEnglish WDDM 1.1 szDriverModelLocalized WDDM 1.1 szDriverName nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um szDriverNodeStrongName oem218.inf:NVIDIA_SetA_Devices.NTamd64.6.1:Section132:9.18.13.4084:pci\ven_10de&dev_0ffe szDriverSignDate szDriverVersion 9.18.0013.4084 szKeyDeviceID Enum\PCI\VEN_10DE&DEV_0FFE&SUBSYS_094C10DE&REV_A1 szKeyDeviceKey \Registry\Machine\System\CurrentControlSet\Control\Video\{875D1825-38F0-416C-A05C-36EC093490F3}\0000 szManufacturer NVIDIA szMiniVdd n/a szMiniVddDateEnglish n/a szMiniVddDateLocalized n/a szMonitorMaxRes szMonitorName Generic PnP Monitor szNotesEnglish No problems found. szNotesLocalized No problems found. szOverlayEnglish Supported szRankOfInstalledDriver 00E02001 szRegHelpText szRevision szRevisionId 0x00A1 szSubSysId 0x094C10DE 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 n/a szVendorId 0x10DE

Log Messages

• GpuProcessHostUIShim: The GPU process exited normally. Everything is okay.

_______________________________________________________________________________

[Shannon Woods]

Hmmm. D3D11 isn't being explicitly disabled by Chrome-- that would appear in the Driver Bug Workarounds area. What may be happening is that ANGLE is attempting to create a D3D11 device, and failing for some reason on that hardware, in which case it would fall back to D3D9. I do notice that you're using the --ignore-gpu-blacklist flag, which seems odd to me, because you're on Win7 with a recent card & driver. Were you experiencing issues without the --ignore-gpu-blacklist flag?

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...

[Shannon Woods]

One other question-- is your Windows installation up to date on that machine? DX11 renderer creation can fail in ANGLE if DXGI 1.2 isn't present on the machine. DXGI is packaged as part of a Windows 7 platform update: http://support.microsoft.com/kb/2670838

[Thierry Lefebvre]

Hi Shannon,

Effectively, i tried launching Chrome with/without the --ignore-gpu-blacklist flag but it has no effects.

...but you're second question was the right one :)

My Windows was apparently not up to date and after installing the package 2670838, ANGLE uses now the D3D11 Backend !

Thank you so much !!