Low quality video scaling/resizing when there is no overlay
Reported by
human.p...@gmail.com,
Aug 15
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Issue descriptionUserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3515.0 Safari/537.36 Example URL: https://www.youtube.com/watch?v=Qv_SnGVF7og Steps to reproduce the problem: 1. Open https://www.youtube.com/watch?v=Qv_SnGVF7og and set video quality to 1080p, or any video that is sharp enough to see difference. 2. Move mouse cursor away from video and observe. 3. Move mouse cursor on the video to show on-video overlay, and observe again. What is the expected behavior? The video scaling should be the same What went wrong? The video scaling is different, when there is NO overlay, the resizing/scaling algorithm is pretty poor (looks like nearest-neighbor). I also attached another example from Twitch. Did this work before? N/A Is it a problem with Flash or HTML5? HTML5 Does this work in other browsers? N/A Chrome version: 70.0.3515.0 Channel: n/a OS Version: 10.0 Flash Version: Contents of chrome://gpu: 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: Hardware accelerated Rasterization: Hardware accelerated Skia Deferred Display List: Disabled Skia Renderer: Disabled Surface Synchronization: Enabled Video Decode: Hardware accelerated Viz Service Display Compositor: Enabled WebGL: Hardware accelerated WebGL2: Hardware accelerated Driver Bug Workarounds clear_uniforms_before_first_program_use decode_encode_srgb_for_generatemipmap disable_discard_framebuffer disable_framebuffer_cmaa exit_on_context_lost force_cube_complete msaa_is_slow scalarize_vec_and_mat_constructor_args texsubimage_faster_than_teximage disabled_extension_GL_KHR_blend_equation_advanced disabled_extension_GL_KHR_blend_equation_advanced_coherent Problems Detected Some drivers are unable to reset the D3D device in the GPU process sandbox Applied Workarounds: exit_on_context_lost TexSubImage is faster for full uploads on ANGLE Applied Workarounds: texsubimage_faster_than_teximage 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 On Intel GPUs MSAA performance is not acceptable for GPU rasterization: 527565 Applied Workarounds: msaa_is_slow Framebuffer discarding can hurt performance on non-tilers: 570897 Applied Workarounds: disable_discard_framebuffer Use GL_INTEL_framebuffer_CMAA on ChromeOS: 535198 Applied Workarounds: disable_framebuffer_cmaa 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 Native GpuMemoryBuffers have been disabled, either via about:flags or command line. Disabled Features: native_gpu_memory_buffers Skia renderer is not used by default. Disabled Features: skia_renderer Skia deferred display list is not used by default. Disabled Features: skia_deferred_display_list Version Information Data exported 2018-08-15T16:54:56.048Z Chrome version Chrome/70.0.3515.0 Operating system Windows NT 10.0.17134 Software rendering list URL https://chromium.googlesource.com/chromium/src/+/0e3f811e74b63685424a1bc4ea46b4a85d8f3f2e/gpu/config/software_rendering_list.json Driver bug list URL https://chromium.googlesource.com/chromium/src/+/0e3f811e74b63685424a1bc4ea46b4a85d8f3f2e/gpu/config/gpu_driver_bug_list.json ANGLE commit id 6ba9754f4a56 2D graphics backend Skia/70 fdf05f4ff4e96e28a31e210cb471d149d736f528- Command Line "C:\Users\ikena\AppData\Local\Google\Chrome SxS\Application\chrome.exe" --flag-switches-begin --flag-switches-end Driver Information Initialization time 201 In-process GPU false Passthrough Command Decoder false Sandboxed true GPU0 VENDOR = 0x8086, DEVICE= 0x5916 *ACTIVE* GPU1 VENDOR = 0x10de, DEVICE= 0x134d Optimus false AMD switchable false Desktop compositing Aero Glass Direct Composition true Supports overlays true Overlay capabilities YUY2 SCALING Diagonal Monitor Size of \\.\DISPLAY1 21.9" Driver D3D12 feature level D3D 12.1 Driver Vulkan API version Not supported Driver vendor Intel Corporation Driver version 22.20.16.4691 Driver date 6-2-2017 Pixel shader version 5.0 Vertex shader version 5.0 Max. MSAA samples 16 Machine model name Machine model version GL_VENDOR Google Inc. GL_RENDERER ANGLE (Intel(R) HD Graphics 620 Direct3D11 vs_5_0 ps_5_0) GL_VERSION OpenGL ES 2.0 (ANGLE 2.1.0.6ba9754f4a56) 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_pack_reverse_row_order GL_ANGLE_program_cache_control 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_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_frag_depth 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_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_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: 000000000000bde2) Window system binding version 1.4 (ANGLE 2.1.0.6ba9754f4a56) 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_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 Direct rendering Yes Reset notification strategy 0x8252 GPU process crash count 0 Compositor Information Tile Update Mode One-copy Partial Raster Enabled GpuMemoryBuffers Status ATC Software only ATCIA Software only DXT1 Software only DXT5 Software only ETC1 Software only 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 1680x1050], workarea=[0,0 1680x1010], scale=1, external. Color space information {primaries_d50_referred: [[0.6469, 0.3395], [0.3105, 0.6120], [0.1493, 0.0788]], transfer:0.0000*x + 0.0000 if x < 0.0000 else (1.0000*x + 0.0000)**2.1992 + 0.0000, matrix:RGB, range:FULL} Bits per color component 8 Bits per pixel 24 Video Acceleration Information Decode h264 baseline up to 4096x2304 pixels Decode h264 baseline up to 2304x4096 pixels Decode h264 main up to 4096x2304 pixels Decode h264 main up to 2304x4096 pixels Decode h264 high up to 4096x2304 pixels Decode h264 high up to 2304x4096 pixels Decode vp8 up to 7680x4320 pixels Decode vp8 up to 4320x7680 pixels Decode vp9 profile0 up to 7680x4320 pixels Decode vp9 profile0 up to 4320x7680 pixels Decode vp9 profile1 up to 7680x4320 pixels Decode vp9 profile1 up to 4320x7680 pixels Decode vp9 profile2 up to 7680x4320 pixels Decode vp9 profile2 up to 4320x7680 pixels Decode vp9 profile3 up to 7680x4320 pixels Decode vp9 profile3 up to 4320x7680 pixels Encode h264 baseline up to 3840x2176 pixels and/or 30.000 fps Encode h264 main up to 3840x2176 pixels and/or 30.000 fps Encode h264 high up to 3840x2176 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 1050 dwRefreshRate 59 dwWHQLLevel 0 dwWidth 1680 iAdapter 0 lDriverSize 64471176 lMiniVddSize 0 szAGPStatusEnglish Enabled szAGPStatusLocalized Enabled szChipType Intel(R) HD Graphics Family szD3DStatusEnglish Enabled szD3DStatusLocalized Enabled szDACType Internal szDDIVersionEnglish 12 szDDIVersionLocalized 12 szDDStatusEnglish Enabled szDDStatusLocalized Enabled szDXVAHDEnglish Supported szDXVAModes ModeMPEG2_A ModeMPEG2_C ModeWMV9_C ModeVC1_C szDescription Intel(R) HD Graphics 620 szDeviceId 0x5916 szDeviceIdentifier {D7B78E66-1A56-11CF-C661-3E31B9C2DB35} szDeviceName \\.\DISPLAY1 szDisplayMemoryEnglish 6206 MB szDisplayMemoryLocalized 6206 MB szDisplayModeEnglish 1680 x 1050 (32 bit) (59Hz) szDisplayModeLocalized 1680 x 1050 (32 bit) (59Hz) szDriverAssemblyVersion 22.20.16.4691 szDriverAttributes Final Retail szDriverDateEnglish 6/1/2017 7:00:00 PM szDriverDateLocalized 6/1/2017 19:00:00 szDriverLanguageEnglish English szDriverLanguageLocalized English szDriverModelEnglish WDDM 2.2 szDriverModelLocalized WDDM 2.2 szDriverName C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_82548830eadb8221\igdumdim64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_82548830eadb8221\igd10iumd64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_82548830eadb8221\igd10iumd64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_82548830eadb8221\igd12umd64.dll szDriverNodeStrongName oem12.inf:5f63e534fccdbc6c:iKBLD_w10_DS:22.20.16.4691:pci\ven_8086&dev_5916&subsys_112e1025 szDriverSignDate Unknown szDriverVersion 22.20.0016.4691 szKeyDeviceID Enum\PCI\VEN_8086&DEV_5916&SUBSYS_112E1025&REV_02 szKeyDeviceKey \Registry\Machine\System\CurrentControlSet\Control\Video\{D218DFF7-52F8-11E8-B3B5-ABF7CEADB185}\0000 szManufacturer Intel Corporation szMiniVdd unknown szMiniVddDateEnglish Unknown szMiniVddDateLocalized unknown szMonitorMaxRes Unknown szMonitorName Acer LCD Monitor V223W szNotesEnglish No problems found. szNotesLocalized No problems found. szOverlayEnglish Supported szRankOfInstalledDriver 00D10001 szRegHelpText Unknown szRevision Unknown szRevisionId 0x0002 szSubSysId 0x112E1025 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 0x8086 1 b3DAccelerationEnabled true b3DAccelerationExists true bAGPEnabled true bAGPExistenceValid false bAGPExists false bCanRenderWindow false bDDAccelerationEnabled true bDriverBeta false bDriverDebug false bDriverSigned false bDriverSignedValid false bNoHardware false dwBpp 0 dwDDIVersion 12 dwHeight 0 dwRefreshRate 0 dwWHQLLevel 0 dwWidth 0 iAdapter 0 lDriverSize 901712 lMiniVddSize 0 szAGPStatusEnglish Enabled szAGPStatusLocalized Enabled szChipType GeForce 940MX szD3DStatusEnglish Enabled szD3DStatusLocalized Enabled szDACType Integrated RAMDAC szDDIVersionEnglish 12 szDDIVersionLocalized 12 szDDStatusEnglish Enabled szDDStatusLocalized Enabled szDXVAHDEnglish Unknown szDXVAModes Unknown szDescription NVIDIA GeForce 940MX szDeviceId 0x134D szDeviceIdentifier Unknown szDeviceName Unknown szDisplayMemoryEnglish 8098 MB szDisplayMemoryLocalized 8098 MB szDisplayModeEnglish Unknown szDisplayModeLocalized unknown szDriverAssemblyVersion 22.21.13.8205 szDriverAttributes Final Retail szDriverDateEnglish 4/30/2017 7:00:00 PM szDriverDateLocalized 4/30/2017 19:00:00 szDriverLanguageEnglish English szDriverLanguageLocalized English szDriverModelEnglish WDDM 2.2 szDriverModelLocalized WDDM 2.2 szDriverName C:\WINDOWS\System32\DriverStore\FileRepository\nvacwu.inf_amd64_9d2734742a07f3cf\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvacwu.inf_amd64_9d2734742a07f3cf\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvacwu.inf_amd64_9d2734742a07f3cf\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvacwu.inf_amd64_9d2734742a07f3cf\nvldumdx.dll szDriverNodeStrongName oem35.inf:0f066de345acf94c:Section054:22.21.13.8205:pci\ven_10de&dev_134d&subsys_112e1025 szDriverSignDate Unknown szDriverVersion 22.21.0013.8205 szKeyDeviceID Enum\PCI\VEN_10DE&DEV_134D&SUBSYS_112E1025&REV_A2 szKeyDeviceKey Unknown szManufacturer NVIDIA szMiniVdd unknown szMiniVddDateEnglish Unknown szMiniVddDateLocalized unknown szMonitorMaxRes Unknown szMonitorName Unknown szNotesEnglish No problems found. szNotesLocalized No problems found. szOverlayEnglish Unknown szRankOfInstalledDriver 00D10001 szRegHelpText Unknown szRevision Unknown szRevisionId 0x00A2 szSubSysId 0x112E1025 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 [14716:13044:0815/115018.335:WARNING:angle_platform_impl.cc(59)] : compileToBinary(233): C:\fakepath(56,8-58): 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(64,8-28): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them [14716:3252:0815/115018.356:WARNING:angle_platform_impl.cc(59)] : compileToBinary(233): C:\fakepath(35,8-58): 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(43,8-28): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them [14716:1100:0815/115018.396:WARNING:angle_platform_impl.cc(59)] : compileToBinary(233): C:\fakepath(53,8-58): 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(61,8-28): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them [14716:13044:0815/115021.568:WARNING:angle_platform_impl.cc(59)] : compileToBinary(233): C:\fakepath(54,8-58): 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(62,8-28): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them [14716:3252:0815/115022.806:WARNING:angle_platform_impl.cc(59)] : compileToBinary(233): C:\fakepath(44,8-58): 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(52,8-28): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them GpuProcessHostUIShim: The GPU process exited normally. Everything is okay. [14716:1100:0815/115033.622:WARNING:angle_platform_impl.cc(59)] : compileToBinary(233): C:\fakepath(54,8-58): 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(62,8-28): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them [14716:3596:0815/115101.456:ERROR:gles2_cmd_decoder.cc(17799)] : [GroupMarkerNotSet( crbug.com/242999 )!:F06CFF0A61020000]GL ERROR :GL_INVALID_OPERATION : glCreateAndConsumeTextureCHROMIUM: invalid mailbox name [14716:3596:0815/115101.456:ERROR:gles2_cmd_decoder.cc(17799)] : [GroupMarkerNotSet( crbug.com/242999 )!:F06CFF0A61020000]GL ERROR :GL_INVALID_OPERATION : glCreateAndConsumeTextureCHROMIUM: invalid mailbox name GpuProcessHostUIShim: The GPU process exited normally. Everything is okay. [14716:3596:0815/115455.416:ERROR:gles2_cmd_decoder.cc(17799)] : [GroupMarkerNotSet( crbug.com/242999 )!:F06CFF0A61020000]GL ERROR :GL_INVALID_OPERATION : glCreateAndConsumeTextureCHROMIUM: invalid mailbox name [14716:3596:0815/115455.416:ERROR:gles2_cmd_decoder.cc(17799)] : [GroupMarkerNotSet( crbug.com/242999 )!:F06CFF0A61020000]GL ERROR :GL_INVALID_OPERATION : glCreateAndConsumeTextureCHROMIUM: invalid mailbox name Special note of my sys: Win 10 laptop, but I'm using a external monitor (1680x1050) and it only (i.e. I turned off the build-in screen). I can't reproduce this bug with my other desktop computers.
,
Aug 15
Additional info: This bug PERSISTS if I *only* disabled hardware video decoding. (chrome://flags/#disable-accelerated-video-decode). this bug will be GONE when I *fully* disabled hardware acceleration. (settings->Use hardware acceleration when available).
,
Aug 15
And a better test video: https://www.youtube.com/watch?v=eK6ufTDLt_Y
,
Aug 15
Since it's canary/dev, maybe related to new NV12 overlays?
,
Aug 15
I can reproduce the same bug on 69.0.3497.32 (Official Build) beta (64-bit) (cohort: Beta)
,
Aug 15
No, NV12 overlay CL just landed and got reverted, so it can't be the culprit.
,
Aug 15
Ligi, can someone bisect and see where this regressed?
,
Aug 15
Rajshree, could you please try a repro and bisect. Mo, do you think this bug is specific to any GPU ?
,
Aug 16
,
Aug 16
Unable to reproduce the issue on Win-10 elitebook laptop using chrome reported version #70.0.3515.0 and latest canary #70.0.3523.0. Attached a screen cast for reference. Following are the steps followed to reproduce the issue. ------------ 1. Opened https://www.youtube.com/watch?v=Qv_SnGVF7og and set video quality to 1080p. 2. Moved mouse cursor away from video. 3. Moved mouse cursor on the video to show on-video overlay, and observed that video scaling is same. human.peng@ - Could you please check the issue on latest canary #70.0.3523.0 by creating a new profile without any apps and extensions and please let us know if the issue still persist or not. Also please check the attached screen cast and please let us know if anything missed from our end. Thanks...!!
,
Aug 16
The bug only happens when I start (launch) Chrome/Chromium with: External monitor ONLY (i.e. turned off built-in screen). It doesn't happen if I launch Chrome/Chromium with: My laptop's built-in screen (no matter UI scaling is 100% or 125%) My laptop's built-in screen and external monitor *together*. Also please note, my external monitor is 1680x1050. My built-in screen is 1920x1080.
,
Aug 16
Thank you for providing more feedback. Adding the requester to the cc list. For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
,
Aug 16
Also, I used the same setup months ago and it worked fine. So it's a regression, but I'm not sure if it's Windows or Chrome.
,
Aug 16
Does the issue occur when the 'Enable the use of SurfaceLayer objects for videos.' flag is disabled in chrome://flags? Does setting the 'Select HW overlay strategies' flag to 'None' work around the issue?
,
Aug 16
They all have some effects; but I'm not sure if that's good or bad. For "Enable the use of SurfaceLayer objects for videos.": diabled: 1. It will give you better resizing when there is no overlay 2. But there is still a difference between w/ and w/o overlay 3. Also, the video will overflow (i.e. the video canvas doesn't resize correctly) a little bit. For "Select HW overlay strategies": None: 1. I don't think it improves resizing algorithm at all. 2. There is still a difference between w/ and w/o overlay 3. The video will also overflow
,
Aug 16
Given the color shift between the overlay = none cases, it seems that some sort of hardware overlay is still happening. I'm not a Windows compositor expert, but I've been told that this is plausible when some compositing is offloaded to Direct Composition. (In that case, it may be a graphics driver setting or bug. Do take a look in the Intel Graphics Settings app for configurable options.) The difference in crop between surface layers and not is also worrying. It may be caused by my change e10dc3ec0cacd865cede77c59255c2bae2358d1f. I'll create a separate bug for that. Can you also test overlays = none + surface layers = disabled?
,
Aug 16
+hubbe@: since monitor ICC profiles may be involved. It might be worth changing the external monitor's ICC profile to a standard sRGB one if possible, to see if that affects the result.
,
Aug 16
,
Aug 16
I attached the one with " overlays = none + surface layers = disabled". I will then examine with options in Intel Graphics Settings, I do notice some of the "enhancements" for video are ON by default. (I haven't touch them for consistency reasons).
,
Aug 16
Disabled all enhancements now, doesn't help with resizing issue (it may change colors, but too subtle for me to tell).
,
Aug 16
Adding dana. We suspect that this has something to do with coordinate calculations in the compositor, but that's more of a general suspicion than anything concrete.
,
Aug 16
Somehow, I can now reproduce this bug even on my built-in screen (no external monitor connected) with all default settings. I don't know why, but I suspect it's because I played with some options in Video->Image Enhancement in Intel Display Settings. But I've reset everything back to default and restarted computer.
,
Sep 4
Unable to reproduce the issue on Win-10 (built-in screen (no external monitor connected)) using latest canary #71.0.3542.0 as per comment #22. As the issue is not reproducible from TE-end. Hence, removing Needs-Bisect label and requesting someone from Internals>Media team to please have a look into the issue. Thanks...!!
,
Oct 10
As the issue is not reproducible as per comment #10 and #24. Hence, adding label TE-NeedsTriageHelp for further investigation from dev team. Thanks...!!
,
Dec 20
,
Dec 20
Still an issue? Any updated drivers available if not?
,
Dec 20
Will test once I get back to my (problematic) laptop.
,
Today
(14 hours ago)
human.peng@ if possible, could you follow up on comment #27 and report back? Thanks.
,
Today
(12 hours ago)
When we have content over the video (what we call internally the underlay video case), we don't promote the video layer to hardware overlay. So the scaling is down through Chrome's GLRenderer, which uses a Blit through Dx11. If there is no content over the video, we promote the video layer to hardware overlay (from about:gpu, your hardware supports this mode) and scaling is down by hardware. It's working progress we are also promoting the underlay video to hardware overlay. When that happens, this issue will be fixed. |
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Comment 1 by dalecur...@chromium.org
, Aug 15