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WebGL jittery when slow (timing/caching/buffering issue?) on Chrome Mac |
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Issue descriptionChrome Version : 61.0.3163.100 URLs (if applicable) : https://sketchfab.com/models/8d06874aac5246c59edb4adbe3606e0e OS version : 10.12.6 Behavior in Safari (if applicable): Safari slows down, but doesn't jitter back-and-forth the way Chrome does. Behavior in Firefox (if applicable): [haven't tested] What steps will reproduce the problem? (1) View an animated 3D model (for example on sketchfab - see URL above), and put it in fullscreen mode. What is the expected result? If the processor has difficulty with the model, the frame rate drops. What happens instead? In addition to frame rate dropping, frames seem to jitter forward and backward in time. For graphics-related bugs, please copy/paste the contents of the about:gpu page at the end of this report. I get this error "Comment is too long" when I try to do that. Okay, so what seems to be happening is that when WebGL frame rate drops, there is a back-and-forth (in time) jitter occuring. You can see this on sites such as SketchFab, as well as vr.google.com/objects and vr.google.com/sketches. It happens while interacting with the models, but also while just watching the idle animations. Note that this is not necessarily easy to reproduce because it doesn't happen on all machines, but when it happens on a specific machine, it tends to happen easily on that machine. It happens on Chrome Mac only (not on Safari, and not on Windows or Linux versions of Chrome). It doesn't seem to happen on all Macs, only certain ones (seen on newer Macs in general). My guess is that maybe previous cached frames or buffers are reappearing unexpectedly?
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Oct 23 2017
,
Oct 23 2017
Unable to reproduce the issue on reported chrome version stable 61.0.3163.100 and on the latest canary 64.0.3247.0 by using windows10, Ubuntu 14.04 and Mac 10.12.6. as per Comment#0, this seems to be happening specifically on newer Macs. Requesting someone from the webgl team to help in further debugging of this. Thanks!
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Oct 24 2017
Note that this seems to happen only on Macs with an integrated graphics card, and when performance is stressed so that framerate drops. When it happens, note that framerate is flickering between 30 and 60.
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Oct 25 2017
The workaround that we ended up using is to place a canvas in the DOM separate from the one used by WebGL and then copy the WebGL canvas to that one in the requestAnimationFrame function. (i.e. render WebGL offscreen) Perhaps that works because drawImage forces the WebGL canvas to finish sync'ing before being displayed? Anyway hoping this might help give insight into why the general problem exists. I guess another thing of note is that in the problem situations, WebGL is drawing to a canvas in the DOM, whereas explicitly rendering offscreen seems to fix the problem.
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Oct 26 2017
Thanks for the report. This was diagnosed and fixed in Issue 769488 . The fix is already in Chrome 62 which is rolling out now. |
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Comment 1 by hoainguyen@google.com
, Oct 20 2017Here is the about:gpu: ---------------------------------- Note: To properly save this page, select the "Webpage, Complete" option in the Save File dialog. Graphics Feature Status Canvas: Hardware accelerated CheckerImaging: Disabled Flash: Hardware accelerated Flash Stage3D: Hardware accelerated Flash Stage3D Baseline profile: Hardware accelerated Compositing: Hardware accelerated Multiple Raster Threads: Enabled Native GpuMemoryBuffers: Hardware accelerated Rasterization: Hardware accelerated Video Decode: Hardware accelerated Video Encode: Hardware accelerated WebGL: Hardware accelerated WebGL2: Hardware accelerated Driver Bug Workarounds add_and_true_to_loop_condition adjust_src_dst_region_for_blitframebuffer avoid_stencil_buffers decode_encode_srgb_for_generatemipmap disable_framebuffer_cmaa disable_multimonitor_multisampling disable_webgl_rgb_multisampling_usage emulate_abs_int_function get_frag_data_info_bug init_two_cube_map_levels_before_copyteximage msaa_is_slow pack_parameters_workaround_with_pack_buffer rebind_transform_feedback_before_resume regenerate_struct_names remove_invariant_and_centroid_for_essl3 rewrite_texelfetchoffset_to_texelfetch scalarize_vec_and_mat_constructor_args set_zero_level_before_generating_mipmap unfold_short_circuit_as_ternary_operation unpack_alignment_workaround_with_unpack_buffer unpack_image_height_workaround_with_unpack_buffer use_intermediary_for_copy_texture_image use_unused_standard_shared_blocks Problems Detected Multisampling is buggy on OSX when multiple monitors are connected: 237931 Applied Workarounds: disable_multimonitor_multisampling Unfold short circuit on Mac OS X: 307751 Applied Workarounds: unfold_short_circuit_as_ternary_operation Always rewrite vec/mat constructors to be consistent: 398694 Applied Workarounds: scalarize_vec_and_mat_constructor_args Mac drivers handle struct scopes incorrectly: 403957 Applied Workarounds: regenerate_struct_names On Intel GPUs MSAA performance is not acceptable for GPU rasterization: 527565 Applied Workarounds: msaa_is_slow glGenerateMipmap fails if the zero texture level is not set on some Mac drivers: 560499 Applied Workarounds: set_zero_level_before_generating_mipmap Pack parameters work incorrectly with pack buffer bound: 563714 Applied Workarounds: pack_parameters_workaround_with_pack_buffer Alignment works incorrectly with unpack buffer bound: 563714 Applied Workarounds: unpack_alignment_workaround_with_unpack_buffer copyTexImage2D fails when reading from IOSurface on multiple GPU types.: 581777 Applied Workarounds: use_intermediary_for_copy_texture_image Multisample renderbuffers with format GL_RGB8 have performance issues on Intel GPUs.: 607130 Applied Workarounds: disable_webgl_rgb_multisampling_usage Limited enabling of Chromium GL_INTEL_framebuffer_CMAA: 535198 Applied Workarounds: disable_framebuffer_cmaa glGetFragData{Location|Index} works incorrectly on Max: 638340 Applied Workarounds: get_frag_data_info_bug glResumeTransformFeedback works incorrectly on Intel GPUs: 638514 Applied Workarounds: rebind_transform_feedback_before_resume Result of abs(i) where i is an integer in vertex shader is wrong: 642227 Applied Workarounds: emulate_abs_int_function Rewrite texelFetchOffset to texelFetch for Intel Mac: 642605 Applied Workarounds: rewrite_texelfetchoffset_to_texelfetch Rewrite condition in for and while loops for Intel Mac: 644669 Applied Workarounds: add_and_true_to_loop_condition Decode and encode before generateMipmap for srgb format textures on macosx: 634519 Applied Workarounds: decode_encode_srgb_for_generatemipmap Init first two levels before CopyTexImage2D for cube map texture on Intel Mac 10.12: 648197 Applied Workarounds: init_two_cube_map_levels_before_copyteximage Insert statements to reference all members in unused std140/shared blocks on Mac: 618464 Applied Workarounds: use_unused_standard_shared_blocks Tex(Sub)Image3D performs incorrectly when uploading from unpack buffer with GL_UNPACK_IMAGE_HEIGHT greater than zero on Intel Macs: 654258 Applied Workarounds: unpack_image_height_workaround_with_unpack_buffer adjust src/dst region if blitting pixels outside read framebuffer on Mac: 644740 Applied Workarounds: adjust_src_dst_region_for_blitframebuffer Mac driver GL 4.1 requires invariant and centroid to match between shaders: 639760, 641129 Applied Workarounds: remove_invariant_and_centroid_for_essl3 Disable KHR_blend_equation_advanced until cc shaders are updated: 661715 Certain Apple devices leak stencil buffers: 713854 Applied Workarounds: avoid_stencil_buffers On Intel GPUs MSAA performance is not acceptable for GPU rasterization: 527565, 751919 Applied Workarounds: msaa_is_slow Checker-imaging has been disabled via finch trial or the command line. Disabled Features: checker_imaging Version Information Data exported 10/20/2017, 3:50:26 PM Chrome version Chrome/61.0.3163.100 Operating system Mac OS X 10.12.6 Software rendering list version 13.10 Driver bug list version 10.29 ANGLE commit id 0d2ecb4ea992 2D graphics backend Skia/61 0eefc0552cfb5ac077560b7c2630c5bd475ea585- Command Line /Applications/Google Chrome.app/Contents/MacOS/Google Chrome --flag-switches-begin --flag-switches-end Driver Information Initialization time 35 In-process GPU false Passthrough Command Decoder false Supports overlays false Sandboxed true GPU0 VENDOR = 0x8086, DEVICE= 0x0a2e *ACTIVE* Optimus false Optimus false AMD switchable false Driver vendor Driver version 10.25.17 Driver date Pixel shader version 4.10 Vertex shader version 4.10 Max. MSAA samples 8 Machine model name MacBookPro Machine model version 11.1 GL_VENDOR Intel Inc. GL_RENDERER Intel Iris OpenGL Engine GL_VERSION 4.1 INTEL-10.25.17 GL_EXTENSIONS GL_ARB_blend_func_extended GL_ARB_draw_buffers_blend GL_ARB_draw_indirect GL_ARB_ES2_compatibility GL_ARB_explicit_attrib_location GL_ARB_gpu_shader_fp64 GL_ARB_gpu_shader5 GL_ARB_instanced_arrays GL_ARB_internalformat_query GL_ARB_occlusion_query2 GL_ARB_sample_shading GL_ARB_sampler_objects GL_ARB_separate_shader_objects GL_ARB_shader_bit_encoding GL_ARB_shader_subroutine GL_ARB_shading_language_include GL_ARB_tessellation_shader GL_ARB_texture_buffer_object_rgb32 GL_ARB_texture_cube_map_array GL_ARB_texture_gather GL_ARB_texture_query_lod GL_ARB_texture_rgb10_a2ui GL_ARB_texture_storage GL_ARB_texture_swizzle GL_ARB_timer_query GL_ARB_transform_feedback2 GL_ARB_transform_feedback3 GL_ARB_vertex_attrib_64bit GL_ARB_vertex_type_2_10_10_10_rev GL_ARB_viewport_array GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_texture_compression_s3tc GL_EXT_texture_filter_anisotropic GL_EXT_texture_sRGB_decode GL_APPLE_client_storage GL_APPLE_container_object_shareable GL_APPLE_flush_render GL_APPLE_object_purgeable GL_APPLE_rgb_422 GL_APPLE_row_bytes GL_APPLE_texture_range GL_ATI_texture_mirror_once GL_NV_texture_barrier Disabled Extensions GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent Window system binding vendor Window system binding version Window system binding extensions Direct rendering Yes Reset notification strategy 0x0000 GPU process crash count 0 Compositor Information Tile Update Mode Zero-copy Partial Raster Enabled GpuMemoryBuffers Status ATC Software only ATCIA Software only DXT1 Software only DXT5 Software only ETC1 Software only R_8 GPU_READ_CPU_READ_WRITE, GPU_READ_CPU_READ_WRITE_PERSISTENT R_16 Software only RG_88 Software only BGR_565 Software only RGBA_4444 Software only RGBX_8888 Software only RGBA_8888 GPU_READ, SCANOUT, SCANOUT_CPU_READ_WRITE BGRX_8888 GPU_READ, SCANOUT, SCANOUT_CPU_READ_WRITE BGRA_8888 GPU_READ, SCANOUT, SCANOUT_CPU_READ_WRITE, GPU_READ_CPU_READ_WRITE, GPU_READ_CPU_READ_WRITE_PERSISTENT RGBA_F16 GPU_READ_CPU_READ_WRITE, GPU_READ_CPU_READ_WRITE_PERSISTENT YVU_420 Software only YUV_420_BIPLANAR GPU_READ_CPU_READ_WRITE, GPU_READ_CPU_READ_WRITE_PERSISTENT UYVY_422 GPU_READ_CPU_READ_WRITE, GPU_READ_CPU_READ_WRITE_PERSISTENT Log Messages [33500:775:1018/125616.009264:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.011914:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.012093:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.012246:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.012361:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.012509:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.028213:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.030846:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.032181:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.032266:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.032309:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.032352:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.032392:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.032441:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.032731:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.032785:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.032832:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.032870:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.032916:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.032953:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.032989:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.033209:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.033258:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.033296:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.033334:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.033375:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.033416:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.033458:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.033662:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.033712:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.033754:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.033793:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.033832:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.033870:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.033907:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.034112:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.034171:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.034213:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.034256:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.034297:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.034337:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1018/125616.034378:ERROR:gles2_cmd_decoder.cc(9792)] : [.Offscreen-For-WebGL-0x7f900d054a00]RENDER WARNING: there is no texture bound to the unit 0 [33500:775:1019/151828.799732:ERROR:gles2_cmd_decoder.cc(4439)] : [.Offscreen-For-WebGL-0x7ff3cc6d7e00]GL ERROR :GL_INVALID_FRAMEBUFFER_OPERATION : glClear: framebuffer incomplete [33500:775:1019/151828.801638:ERROR:gles2_cmd_decoder.cc(4439)] : [.Offscreen-For-WebGL-0x7ff3cc6d7e00]GL ERROR :GL_INVALID_FRAMEBUFFER_OPERATION : glDrawElements: framebuffer incomplete [33500:775:1019/151828.801754:ERROR:gles2_cmd_decoder.cc(4439)] : [.Offscreen-For-WebGL-0x7ff3cc6d7e00]GL ERROR :GL_INVALID_FRAMEBUFFER_OPERATION : glClear: framebuffer incomplete [33500:775:1019/151828.801815:ERROR:gles2_cmd_decoder.cc(4439)] : [.Offscreen-For-WebGL-0x7ff3cc6d7e00]GL ERROR :GL_INVALID_FRAMEBUFFER_OPERATION : glDrawElements: framebuffer incomplete [33500:775:1019/151828.801968:ERROR:gles2_cmd_decoder.cc(4439)] : [.Offscreen-For-WebGL-0x7ff3cc6d7e00]GL ERROR :GL_INVALID_FRAMEBUFFER_OPERATION : glClear: framebuffer incomplete [33500:775:1019/151828.802011:ERROR:gles2_cmd_decoder.cc(4439)] : [.Offscreen-For-WebGL-0x7ff3cc6d7e00]GL ERROR :GL_INVALID_FRAMEBUFFER_OPERATION : glDrawElements: framebuffer incomplete [33500:775:1019/151828.802211:ERROR:gles2_cmd_decoder.cc(4439)] : [.Offscreen-For-WebGL-0x7ff3cc6d7e00]GL ERROR :GL_INVALID_FRAMEBUFFER_OPERATION : glDrawElements: framebuffer incomplete [33500:775:1019/151828.802248:ERROR:gles2_cmd_decoder.cc(4439)] : [.Offscreen-For-WebGL-0x7ff3cc6d7e00]GL ERROR :GL_INVALID_FRAMEBUFFER_OPERATION : glDrawElements: framebuffer incomplete [33500:775:1019/151828.802274:ERROR:gles2_cmd_decoder.cc(4439)] : [.Offscreen-For-WebGL-0x7ff3cc6d7e00]GL ERROR :GL_INVALID_FRAMEBUFFER_OPERATION : glDrawElements: framebuffer incomplete [33500:775:1019/151828.802301:ERROR:gles2_cmd_decoder.cc(4439)] : [.Offscreen-For-WebGL-0x7ff3cc6d7e00]GL ERROR :GL_INVALID_FRAMEBUFFER_OPERATION : glDrawElements: framebuffer incomplete [33500:775:1019/151828.802343:ERROR:gles2_cmd_decoder.cc(9798)] : [.Offscreen-For-WebGL-0x7ff3cc6d7e00]RENDER WARNING: texture bound to texture unit 0 is not renderable. It maybe non-power-of-2 and have incompatible texture filtering. [33500:775:1019/151828.838758:ERROR:gles2_cmd_decoder.cc(4439)] : [.Offscreen-For-WebGL-0x7ff3cc6d7e00]GL ERROR :GL_INVALID_FRAMEBUFFER_OPERATION : glClear: framebuffer incomplete [33500:775:1019/151828.838836:ERROR:gles2_cmd_decoder.cc(4439)] : [.Offscreen-For-WebGL-0x7ff3cc6d7e00]GL ERROR :GL_INVALID_FRAMEBUFFER_OPERATION : glDrawElements: framebuffer incomplete [33500:775:1019/151828.838874:ERROR:gles2_cmd_decoder.cc(4439)] : [.Offscreen-For-WebGL-0x7ff3cc6d7e00]GL ERROR :GL_INVALID_FRAMEBUFFER_OPERATION : glClear: framebuffer incomplete ....+ lots more of these (tell me if you want the whole list)