All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=652690

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyjQELEhNTdG9wcGFnZUFsZXJ0UGFyZW50Il9DaHJvbWl1bVBlcmYvYW5kcm9pZC1nYWxheHktczUvYmxpbmtfcGVyZi5jYW52YXMvZHJhdy1keW5hbWljLXdlYmdsLXRvLWh3LWFjY2VsZXJhdGVkLWNhbnZhcy0yZAwLEg1TdG9wcGFnZUFsZXJ0GODWGQw


Bot(s) for this bug's original alert(s):

android-galaxy-s5

https://build.chromium.org/p/chromium.perf/builders/Android%20Galaxy%20S5%20Perf%20%282%29/builds/3581/steps/blink_perf.canvas/logs/stdio

"WARNING:root:Browser does not support webgl, skipping test"

"===== SKIPPING TEST draw-dynamic-webgl-to-hw-accelerated-canvas-2d.html: Skipped because story is not supported (SharedState.CanRunStory() returns False). ====="

Justin, any idea why the galaxy s5 would think it doesn't support webgl?

No Idea why galaxy s5 think there is no WebGL

aelias, zmo?

It's not blacklisted on purpose.  Might be a bug.  Looks like the Nexus 6 bot is still getting data on this test so I guess it's Galaxy S5 specific.

GPU facts from the log copied below.  WebGL is reported enabled so I'm not sure what's going on.  Note that Mali-T628 is a rare GPU.  junov@, see anything suspicious in the extensions/workaround lists?

INFO:root:OS: android L
INFO:root:Model: SM-G900H
INFO:root:GPU device 0: VENDOR = 0x0 (ARM), DEVICE = 0x0 (Mali-T628)
INFO:root:GPU Attributes:
INFO:root:  adapter_luid        : 0.0
INFO:root:  amd_switchable      : False
INFO:root:  basic_info_state    : 1
INFO:root:  context_info_state  : 1
INFO:root:  direct_rendering    : True
INFO:root:  driver_date         : 
INFO:root:  driver_vendor       : 
INFO:root:  driver_version      : 0
INFO:root:  encrypted_only      : False
INFO:root:  gl_extensions       : GL_EXT_debug_marker GL_ARM_rgba8 GL_ARM_mali_shader_binary GL_OES_depth24 GL_OES_depth_texture GL_OES_depth_texture_cube_map GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_EXT_read_format_bgra GL_OES_compressed_paletted_texture GL_OES_compressed_ETC1_RGB8_texture GL_OES_standard_derivatives GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_sync GL_OES_texture_npot GL_OES_vertex_half_float GL_OES_required_internalformat GL_OES_vertex_array_object GL_OES_mapbuffer GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_EXT_texture_type_2_10_10_10_REV GL_OES_fbo_render_mipmap GL_OES_element_index_uint GL_EXT_shadow_samplers GL_OES_texture_compression_astc GL_KHR_texture_compression_astc_ldr GL_KHR_texture_compression_astc_hdr GL_KHR_debug GL_EXT_occlusion_query_boolean GL_EXT_blend_minmax GL_EXT_discard_framebuffer GL_OES_get_program_binary GL_OES_texture_3D GL_EXT_texture_storage GL_EXT_multisampled_render_to_texture GL_OES_surfaceless_context GL_ARM_mali_program_binary 
INFO:root:  gl_renderer         : Mali-T628
INFO:root:  gl_reset_notification_strategy: 0
INFO:root:  gl_vendor           : ARM
INFO:root:  gl_version          : OpenGL ES 3.0
INFO:root:  gl_ws_extensions    : 
INFO:root:  gl_ws_vendor        : 
INFO:root:  gl_ws_version       : 
INFO:root:  in_process_gpu      : False
INFO:root:  initialization_time : 0.269395
INFO:root:  jpeg_decode_accelerator_supported: False
INFO:root:  lenovo_dcute        : False
INFO:root:  max_framerate_denominator: 1
INFO:root:  max_framerate_numerator: 30
INFO:root:  max_msaa_samples    : 4
INFO:root:  max_resolution_height: 720
INFO:root:  max_resolution_width: 1280
INFO:root:  min_resolution_height: 0
INFO:root:  min_resolution_width: 0
INFO:root:  optimus             : False
INFO:root:  pixel_shader_version: 3.00
INFO:root:  process_crash_count : 0
INFO:root:  profile             : 1
INFO:root:  sandboxed           : False
INFO:root:  software_rendering  : False
INFO:root:  vertex_shader_version: 3.00
INFO:root:  video_decode_accelerator_flags: 7
INFO:root:Feature Status:
INFO:root:  2d_canvas           : enabled
INFO:root:  flash_3d            : enabled
INFO:root:  flash_stage3d       : enabled
INFO:root:  flash_stage3d_baseline: enabled
INFO:root:  gpu_compositing     : enabled
INFO:root:  multiple_raster_threads: disabled_off
INFO:root:  native_gpu_memory_buffers: disabled_software
INFO:root:  rasterization       : enabled
INFO:root:  video_decode        : enabled
INFO:root:  video_encode        : enabled
INFO:root:  vpx_decode          : enabled
INFO:root:  webgl               : enabled
INFO:root:Driver Bug Workarounds:
INFO:root:  clear_uniforms_before_first_program_use
INFO:root:  disable_framebuffer_cmaa
INFO:root:  max_texture_size_limit_4096
INFO:root:  scalarize_vec_and_mat_constructor_args
INFO:root:  use_client_side_arrays_for_stream_buffers
INFO:root:  use_virtualized_gl_contexts

Right, there is nothing wrong from about:gpu info. Someone with a device needs to take a run locally and see any error messages from the about:gpu page - that usually indicates why we fail to create a WebGL context.

John, can you find someone on Clank Test to take a look at this?

Alex, can you look at this?

S5s have been turned down from the perf waterfalls. Closing this as wontfix.