Canvas.GetContext('webgl', ...) returning null on machine with blacklisted driver - is this expected?
630 views
Skip to first unread message
David Deutsch
Sep 7, 2018, 1:25:13 PM9/7/18
to Chromium HTML5
A user of our software has an old, blacklisted AMD driver (id 144 in software_rendering_list.json) which I thought would simply cause Chromium to fallback to software rendering for WebGL, but instead causes Canvas.GetContext('webgl', attributes) to return null, with the attributes object being:
We have asked the user to update to the latest driver (which, being released after 2010, should not be blacklisted), but in the meantime I was wondering if someone could tell me if my assumption about software rendering fallback is correct, and if it is, what other avenues should I investigate? Even if the driver update fixes his problem, I want to make sure I have an accurate understanding of how Chromium handles blacklisted cards/drivers in case we encounter this in the future.
{
"failIfMajorPerformanceCaveat": false,
"preserveDrawingBuffer": false,
"antialias": false,
"alpha": true,
"stencil": true,
"depth": true
}
We have asked the user to update to the latest driver (which, being released after 2010, should not be blacklisted), but in the meantime I was wondering if someone could tell me if my assumption about software rendering fallback is correct, and if it is, what other avenues should I investigate? Even if the driver update fixes his problem, I want to make sure I have an accurate understanding of how Chromium handles blacklisted cards/drivers in case we encounter this in the future.
Now, it is possible that the blacklist issue is a red herring, as the user was not able to see our WebGL map (mapbox) even after disabling the blacklist, and in addition the blacklist specifies WebGL2, whereas mapbox is trying to access WebGL.
Since the user is a customer and not on site, I unfortunately cannot easily get too much information from him, but below is the output of his chrome://gpu. Apologies for the lack of more complete information; even a pointer to some resources/documentation that would help be better understand these types of issues would be greatly appreciated.
Graphics Feature Status • Canvas: Software only, hardware acceleration unavailable • Flash: Software only. Hardware acceleration disabled • Flash Stage3D: Software only. Hardware acceleration disabled • Flash Stage3D Baseline profile: Software only. Hardware acceleration disabled • Compositing: Software only. Hardware acceleration disabled • Multiple Raster Threads: Enabled • Native GpuMemoryBuffers: Software only. Hardware acceleration disabled • Hardware Protected Video Decode: Disabled • Rasterization: Software only. Hardware acceleration disabled • Skia Deferred Display List: Disabled • Skia Renderer: Disabled • Surface Synchronization: Enabled • Video Decode: Software only. Hardware acceleration disabled • Viz Service Display Compositor: Disabled • WebGL: Software only, hardware acceleration unavailable • WebGL2: Software only, hardware acceleration unavailable Problems Detected • Native GpuMemoryBuffers have been disabled, either via about:flags or command line. Disabled Features: native_gpu_memory_buffers • Viz service display compositor is not enabled by default. Disabled Features: viz_display_compositor • 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 2018-09-07T13:18:42.977Z Chrome version Chrome/68.0.3440.106 Operating system Windows NT 6.1.7601 SP1 Software rendering list URL https://chromium.googlesource.com/chromium/src/+/1c32c539ce0065a41cb79da7bfcd2c71af1afe62/gpu/config/software_rendering_list.json Driver bug list URL https://chromium.googlesource.com/chromium/src/+/1c32c539ce0065a41cb79da7bfcd2c71af1afe62/gpu/config/gpu_driver_bug_list.json ANGLE commit id ba1627086779 2D graphics backend Skia/68 1e419fead7ff3b5247102b29b982b6472a60cd4d- Command Line "C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" --flag-switches-begin --flag-switches-end Driver Information Initialization time 610 In-process GPU false Passthrough Command Decoder false Direct Composition false Supports overlays false Sandboxed true GPU0 VENDOR = 0x1002, DEVICE= 0x95cd GPU1 VENDOR = 0x1002, DEVICE= 0x95cd Optimus false AMD switchable false Desktop compositing none Diagonal Monitor Size of \\.\DISPLAY1 21.9" Diagonal Monitor Size of \\.\DISPLAY2 21.9" Diagonal Monitor Size of \\.\DISPLAY4 21.5" Diagonal Monitor Size of \\.\DISPLAY3 23.0" Driver D3D12 feature level Not supported Driver Vulkan API version Not supported Driver vendor ATI Technologies Inc. Driver version 8.580.0.0 Driver date 1-15-2009 Pixel shader version 1.00 Vertex shader version 1.00 Max. MSAA samples 4 Machine model name Machine model version GL_VENDOR Google Inc. GL_RENDERER Google SwiftShader GL_VERSION OpenGL ES 2.0 SwiftShader 4.0.0.6 GL_EXTENSIONS GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth24 GL_OES_depth32 GL_OES_depth_texture GL_OES_depth_texture_cube_map GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_sync GL_OES_element_index_uint GL_OES_framebuffer_object 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_texture_3D GL_OES_vertex_array_object GL_OES_vertex_half_float GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_draw_buffers GL_EXT_instanced_arrays GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_texture_compression_dxt1 GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_ARB_texture_rectangle GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_APPLE_texture_format_BGRA8888 GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_texture_filtering_hint GL_NV_fence GL_NV_framebuffer_blit GL_NV_read_depth GL_EXT_color_buffer_float Disabled Extensions Disabled WebGL Extensions Window system binding vendor Google Inc. Window system binding version 1.4 SwiftShader 4.0.0.6 Window system binding extensions EGL_KHR_create_context EGL_KHR_get_all_proc_addresses EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_fence_sync EGL_KHR_image_base EGL_KHR_surfaceless_context EGL_ANGLE_iosurface_client_buffer EGL_ANDROID_framebuffer_target EGL_ANDROID_recordable Direct rendering Yes Reset notification strategy 0x0000 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=[240,-1050 1680x1050], workarea=[240,-1050 1680x1050], scale=1, external. Color space information {primaries:BT709, transfer:IEC61966_2_1, matrix:RGB, range:FULL} Bits per color component 8 Bits per pixel 24 Info Display[2779098405] bounds=[1920,-1050 1680x1050], workarea=[1920,-1050 1680x1050], scale=1, external. Color space information {primaries:BT709, transfer:IEC61966_2_1, matrix:RGB, range:FULL} Bits per color component 8 Bits per pixel 24 Info Display[2841568472] bounds=[1920,0 1920x1080], workarea=[1920,0 1920x1080], scale=1, external. Color space information {primaries:BT709, transfer:IEC61966_2_1, matrix:RGB, range:FULL} Bits per color component 8 Bits per pixel 24 Info Display[2480450848] bounds=[0,0 1920x1080], workarea=[0,0 1920x1040], scale=1, external. Color space information {primaries:BT709, transfer:IEC61966_2_1, matrix:RGB, range:FULL} Bits per color component 8 Bits per pixel 24 Video Acceleration Information Diagnostics ... loading ... Driver Information for Hardware GPU Initialization time 417 In-process GPU false Passthrough Command Decoder false Direct Composition false Supports overlays false Sandboxed true GPU0 VENDOR = 0x1002, DEVICE= 0x95cd GPU1 VENDOR = 0x1002, DEVICE= 0x95cd Optimus false AMD switchable false Desktop compositing none Diagonal Monitor Size of \\.\DISPLAY1 21.9" Diagonal Monitor Size of \\.\DISPLAY2 21.9" Diagonal Monitor Size of \\.\DISPLAY4 21.5" Diagonal Monitor Size of \\.\DISPLAY3 23.0" Driver D3D12 feature level Not supported Driver Vulkan API version Not supported Driver vendor ATI Technologies Inc. Driver version 8.580.0.0 Driver date 1-15-2009 Pixel shader version 1.00 Vertex shader version 1.00 Max. MSAA samples 4 Machine model name Machine model version GL_VENDOR Google Inc. GL_RENDERER Google SwiftShader GL_VERSION OpenGL ES 2.0 SwiftShader 4.0.0.6 GL_EXTENSIONS GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth24 GL_OES_depth32 GL_OES_depth_texture GL_OES_depth_texture_cube_map GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_sync GL_OES_element_index_uint GL_OES_framebuffer_object 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_texture_3D GL_OES_vertex_array_object GL_OES_vertex_half_float GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_draw_buffers GL_EXT_instanced_arrays GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_texture_compression_dxt1 GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_ARB_texture_rectangle GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_APPLE_texture_format_BGRA8888 GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_texture_filtering_hint GL_NV_fence GL_NV_framebuffer_blit GL_NV_read_depth GL_EXT_color_buffer_float Disabled Extensions Disabled WebGL Extensions Window system binding vendor Google Inc. Window system binding version 1.4 SwiftShader 4.0.0.6 Window system binding extensions EGL_KHR_create_context EGL_KHR_get_all_proc_addresses EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_fence_sync EGL_KHR_image_base EGL_KHR_surfaceless_context EGL_ANGLE_iosurface_client_buffer EGL_ANDROID_framebuffer_target EGL_ANDROID_recordable Direct rendering Yes Reset notification strategy 0x0000 GPU process crash count 0 Graphics Feature Status for Hardware GPU • Canvas: Software only, hardware acceleration unavailable • Flash: Software only. Hardware acceleration disabled • Flash Stage3D: Software only. Hardware acceleration disabled • Flash Stage3D Baseline profile: Software only. Hardware acceleration disabled • Compositing: Software only. Hardware acceleration disabled • Multiple Raster Threads: Enabled • Native GpuMemoryBuffers: Software only. Hardware acceleration disabled • Hardware Protected Video Decode: Disabled • Rasterization: Software only. Hardware acceleration disabled • Skia Deferred Display List: Disabled • Skia Renderer: Disabled • Surface Synchronization: Enabled • Video Decode: Software only. Hardware acceleration disabled • Viz Service Display Compositor: Disabled • WebGL: Software only, hardware acceleration unavailable • WebGL2: Software only, hardware acceleration unavailable Problems Detected for Hardware GPU • Native GpuMemoryBuffers have been disabled, either via about:flags or command line. Disabled Features: native_gpu_memory_buffers • Viz service display compositor is not enabled by default. Disabled Features: viz_display_compositor • 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 Log Messages • GpuProcessHostUIShim: The GPU process exited normally. Everything is okay.
Ken Russell
Sep 7, 2018, 7:20:25 PM9/7/18
to da...@reverenddave.com, Chromium HTML5
It's possible there's a bug in how this blacklist entry is being applied and that it's causing WebGL to be completely disabled rather than to fall back to SwiftShader. I can't immediately reproduce this though. I tried adding and using a blacklist entry similar to 144, and it correctly disabled just WebGL 2.0 support; WebGL 1.0 worked fine.
Your customer may get better functionality by disabling GPU support altogether, but their best bet is to upgrade their system. Their graphics driver is 7 years old.
-Ken
--
You received this message because you are subscribed to the Google Groups "Chromium HTML5" group.
To unsubscribe from this group and stop receiving emails from it, send an email to chromium-html...@chromium.org.
To post to this group, send email to chromiu...@chromium.org.
Visit this group at https://groups.google.com/a/chromium.org/group/chromium-html5/.
For more options, visit https://groups.google.com/a/chromium.org/d/optout.
David Deutsch
Sep 9, 2018, 1:31:07 PM9/9/18
to Chromium HTML5, da...@reverenddave.com
Thanks for the info. I have since found that Direct3D 11 is also disabled for pre-2011 AMD drivers, so I agree that the best bet is to just have the customer update to the latest driver (which for this particular card is from 2012, which gives you an idea of how old their system is) and be done with it.
Thanks again,
- Dave
Reply all
Reply to author
Forward
0 new messages