Issue metadata
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Background layer color doesn't match rendered content |
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Issue description
Chrome Version: 63.0.3227.0
OS: macOS 10.12.6 (16G29)
What steps will reproduce the problem?
(1) Visit a page with a solid background color, like this one:
data:text/html,<body bgcolor=1e6041>
(2) Aggressively resize the window from the left or right edge.
(3) Watch the right edge of the page.
What is the expected result?
The background color shown by the browser process while waiting for a new frame from the renderer matches the color later drawn by the renderer.
What happens instead?
With some colors, the browser-drawn background color is noticeably different from the renderer-drawn background.
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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
adjust_src_dst_region_for_blitframebuffer
decode_encode_srgb_for_generatemipmap
disable_framebuffer_cmaa
get_frag_data_info_bug
msaa_is_slow
pack_parameters_workaround_with_pack_buffer
regenerate_struct_names
remove_invariant_and_centroid_for_essl3
scalarize_vec_and_mat_constructor_args
set_zero_level_before_generating_mipmap
unfold_short_circuit_as_ternary_operation
unpack_alignment_workaround_with_unpack_buffer
use_intermediary_for_copy_texture_image
use_unused_standard_shared_blocks
Problems Detected
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
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
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
Decode and encode before generateMipmap for srgb format textures on macosx: 634519
Applied Workarounds: decode_encode_srgb_for_generatemipmap
Insert statements to reference all members in unused std140/shared blocks on Mac: 618464
Applied Workarounds: use_unused_standard_shared_blocks
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
Applied Workarounds: disable(GL_KHR_blend_equation_advanced), disable(GL_KHR_blend_equation_advanced_coherent)
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 9/29/2017, 7:01:04 PM
Chrome version Chrome/63.0.3227.0
Operating system Mac OS X 10.12.6
Software rendering list version 13.12
Driver bug list version 10.31
ANGLE commit id db3422764a9b
2D graphics backend Skia/63 8b059bd946d9f14607f6d2e8b966267dd8e5a54d-
Command Line /Applications/Google Chrome Canary.app/Contents/MacOS/Google Chrome Canary --flag-switches-begin --enable-features=MacMDDownloadShelf --flag-switches-end
Driver Information
Initialization time 46
In-process GPU false
Passthrough Command Decoder false
Supports overlays false
Sandboxed true
GPU0 VENDOR = 0x1002, DEVICE= 0x67ef *ACTIVE*
GPU1 VENDOR = 0x8086, DEVICE= 0x591b
Optimus false
Optimus false
AMD switchable true
Driver vendor
Driver version 1.51.8
Driver date
Pixel shader version 4.10
Vertex shader version 4.10
Max. MSAA samples 8
Machine model name MacBookPro
Machine model version 14.3
GL_VENDOR ATI Technologies Inc.
GL_RENDERER AMD Radeon Pro 560 OpenGL Engine
GL_VERSION 4.1 ATI-1.51.8
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_depth_bounds_test GL_EXT_texture_compression_s3tc GL_EXT_texture_filter_anisotropic GL_EXT_texture_mirror_clamp 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
,
Sep 29 2017
Almost certainly issue 770219
,
Sep 29 2017
Is that the right crbug? It sounds like the conclusion was that they were using software rendering, which isn't the case here.
,
Oct 2 2017
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Comment 1 by sdy@chromium.org
, Sep 29 2017Status: Assigned (was: Untriaged)