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demonstrate that Mixxx does not need to handle vsync itself#3482

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mixxxdj:mainfrom
Be-ing:vsync_demo
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demonstrate that Mixxx does not need to handle vsync itself#3482
Be-ing wants to merge 2 commits into
mixxxdj:mainfrom
Be-ing:vsync_demo

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@Be-ing Be-ing commented Dec 26, 2020 •
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Waveform scrolling is still smooth without this sleep. Focus your eyes intently on the play position line or follow a section of the waveform scrolling all the way across the screen to avoid getting confused by your eyes saccading.

#1974 (comment) :

I'm pretty sure the idea of a vsync is an illusion on modern OSes (in Qt 4 and Qt 5), which almost exclusively use compositing window managers. We were already being rendered to an offscreen surface. In my opinion, the key reason we were achieving dejerking before was probably more to do with rendering at a consistent rate than anything to do with a vsync.

This PR is not intended to be merged. It is only a proof of concept.

@Be-ing
demonstrate that Mixxx does not need to handle vsync itself
b5b3c85 
Waveform scrolling is still smooth without this sleep.
@Be-ing Be-ing requested a review from daschuer December 26, 2020 21:53
@Be-ing Be-ing marked this pull request as draft December 26, 2020 21:53
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Be-ing commented Dec 27, 2020

In my opinion, the key reason we were achieving dejerking before was probably more to do with rendering at a consistent rate than anything to do with a vsync.

There's more to it than that... Commenting out setAutoBufferSwap(false); in the OpenGL waveform renderers and glw->swapBuffers(); in WaveformWidgetFactory::swap makes the waveforms jerky like #1974.

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Be-ing commented Dec 27, 2020

I wonder how smooth the waveforms would be if we only relied on the timing of the DAC and left the buffer swapping to Qt?

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daschuer commented Dec 27, 2020

When I use the VSyncTest (GL) waveform I have at 30 and 60 fps most of the time a smooth pink area.
After removing this timer, it flickers red and white.

Can you see also the difference?

A Smooth pink area, proves that the syncing code id able to render a picture for the desired swap interval.
red / with / red / white

If you see:
red / white / white / white / red or something. The internally rendered red pictures are not shown as intended. They are overwritten by the next white picture. Which is than shown longer than intended. If this is finally a moving waveform it will jerk.

Rendered    Shown 
r \-------  r \-------  
w -\------  w -\------
r --\-----  w -\------ 
w ---\----  w ---\----
r ----\---  r ----\---
w -----\--  r ----\---
r ------\-  r ------\- 
w -------\  w -------\

The ascii arts shows the rendered signal as smooth line, but it is shown not smooth.

I think you should always see the jerking at 30 fps. At 60 fps, it can be possible that the graphic driver is configured to be v-synced or at least has anti-tearing enabled. This will delay either the rendering or the swapping or both, depending on the graphics driver and GPU.

The Vsync thread knows that and uses m_semaVsyncSlot, to sync on these delays. The timer is required to hit this syncing code in the GPU if enabled and runs freely otherwise, on the user configured frame Rate.

You can use glxgears to check if vsync is enabled on your system.
It is enabled on my system:
300 frames in 5.0 seconds = 59.940 FPS
but it turns out that I need the timer anyway.

This is my glxinfo output

name of display: :0
display: :0  screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.4
server glx extensions:
    GLX_ARB_create_context, GLX_ARB_create_context_profile, 
    GLX_ARB_create_context_robustness, GLX_ARB_fbconfig_float, 
    GLX_ARB_framebuffer_sRGB, GLX_ARB_multisample, 
    GLX_EXT_create_context_es2_profile, GLX_EXT_create_context_es_profile, 
    GLX_EXT_fbconfig_packed_float, GLX_EXT_framebuffer_sRGB, 
    GLX_EXT_import_context, GLX_EXT_libglvnd, GLX_EXT_texture_from_pixmap, 
    GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_INTEL_swap_event, 
    GLX_MESA_copy_sub_buffer, GLX_OML_swap_method, GLX_SGIS_multisample, 
    GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group, 
    GLX_SGI_make_current_read, GLX_SGI_swap_control
client glx vendor string: Mesa Project and SGI
client glx version string: 1.4
client glx extensions:
    GLX_ARB_context_flush_control, GLX_ARB_create_context, 
    GLX_ARB_create_context_no_error, GLX_ARB_create_context_profile, 
    GLX_ARB_create_context_robustness, GLX_ARB_fbconfig_float, 
    GLX_ARB_framebuffer_sRGB, GLX_ARB_get_proc_address, GLX_ARB_multisample, 
    GLX_EXT_buffer_age, GLX_EXT_create_context_es2_profile, 
    GLX_EXT_create_context_es_profile, GLX_EXT_fbconfig_packed_float, 
    GLX_EXT_framebuffer_sRGB, GLX_EXT_import_context, 
    GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating, 
    GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer, 
    GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer, 
    GLX_MESA_swap_control, GLX_OML_swap_method, GLX_OML_sync_control, 
    GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, 
    GLX_SGIX_visual_select_group, GLX_SGI_make_current_read, 
    GLX_SGI_swap_control, GLX_SGI_video_sync
GLX version: 1.4
GLX extensions:
    GLX_ARB_create_context, GLX_ARB_create_context_profile, 
    GLX_ARB_create_context_robustness, GLX_ARB_fbconfig_float, 
    GLX_ARB_framebuffer_sRGB, GLX_ARB_get_proc_address, GLX_ARB_multisample, 
    GLX_EXT_buffer_age, GLX_EXT_create_context_es2_profile, 
    GLX_EXT_create_context_es_profile, GLX_EXT_fbconfig_packed_float, 
    GLX_EXT_framebuffer_sRGB, GLX_EXT_import_context, 
    GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating, 
    GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer, GLX_MESA_query_renderer, 
    GLX_MESA_swap_control, GLX_OML_swap_method, GLX_OML_sync_control, 
    GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, 
    GLX_SGIX_visual_select_group, GLX_SGI_make_current_read, 
    GLX_SGI_swap_control, GLX_SGI_video_sync
Extended renderer info (GLX_MESA_query_renderer):
    Vendor: Intel Open Source Technology Center (0x8086)
    Device: Mesa DRI Intel(R) HD Graphics 4000 (IVB GT2) (0x166)
    Version: 20.0.8
    Accelerated: yes
    Video memory: 1536MB
    Unified memory: yes
    Preferred profile: core (0x1)
    Max core profile version: 4.2
    Max compat profile version: 3.0
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.0
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) HD Graphics 4000 (IVB GT2)
OpenGL core profile version string: 4.2 (Core Profile) Mesa 20.0.8
OpenGL core profile shading language version string: 4.20
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
    GL_3DFX_texture_compression_FXT1, GL_AMD_conservative_depth, 
    GL_AMD_draw_buffers_blend, GL_AMD_multi_draw_indirect, 
    GL_AMD_seamless_cubemap_per_texture, GL_AMD_shader_trinary_minmax, 
    GL_AMD_texture_texture4, GL_AMD_vertex_shader_layer, 
    GL_AMD_vertex_shader_viewport_index, GL_ANGLE_texture_compression_dxt3, 
    GL_ANGLE_texture_compression_dxt5, GL_APPLE_object_purgeable, 
    GL_ARB_ES2_compatibility, GL_ARB_ES3_compatibility, 
    GL_ARB_arrays_of_arrays, GL_ARB_base_instance, GL_ARB_blend_func_extended, 
    GL_ARB_buffer_storage, GL_ARB_clear_buffer_object, GL_ARB_clear_texture, 
    GL_ARB_clip_control, GL_ARB_compressed_texture_pixel_storage, 
    GL_ARB_compute_shader, GL_ARB_conditional_render_inverted, 
    GL_ARB_conservative_depth, GL_ARB_copy_buffer, GL_ARB_copy_image, 
    GL_ARB_cull_distance, GL_ARB_debug_output, GL_ARB_depth_buffer_float, 
    GL_ARB_depth_clamp, GL_ARB_derivative_control, GL_ARB_direct_state_access, 
    GL_ARB_draw_buffers, GL_ARB_draw_buffers_blend, 
    GL_ARB_draw_elements_base_vertex, GL_ARB_draw_indirect, 
    GL_ARB_draw_instanced, GL_ARB_enhanced_layouts, 
    GL_ARB_explicit_attrib_location, GL_ARB_explicit_uniform_location, 
    GL_ARB_fragment_coord_conventions, GL_ARB_fragment_layer_viewport, 
    GL_ARB_fragment_shader, GL_ARB_framebuffer_no_attachments, 
    GL_ARB_framebuffer_object, GL_ARB_framebuffer_sRGB, 
    GL_ARB_get_program_binary, GL_ARB_get_texture_sub_image, GL_ARB_gl_spirv, 
    GL_ARB_gpu_shader5, GL_ARB_gpu_shader_fp64, GL_ARB_half_float_pixel, 
    GL_ARB_half_float_vertex, GL_ARB_indirect_parameters, 
    GL_ARB_instanced_arrays, GL_ARB_internalformat_query, 
    GL_ARB_internalformat_query2, GL_ARB_invalidate_subdata, 
    GL_ARB_map_buffer_alignment, GL_ARB_map_buffer_range, GL_ARB_multi_bind, 
    GL_ARB_multi_draw_indirect, GL_ARB_occlusion_query2, 
    GL_ARB_parallel_shader_compile, GL_ARB_pipeline_statistics_query, 
    GL_ARB_pixel_buffer_object, GL_ARB_point_sprite, 
    GL_ARB_polygon_offset_clamp, GL_ARB_program_interface_query, 
    GL_ARB_provoking_vertex, GL_ARB_robustness, GL_ARB_sample_shading, 
    GL_ARB_sampler_objects, GL_ARB_seamless_cube_map, 
    GL_ARB_seamless_cubemap_per_texture, GL_ARB_separate_shader_objects, 
    GL_ARB_shader_atomic_counter_ops, GL_ARB_shader_atomic_counters, 
    GL_ARB_shader_bit_encoding, GL_ARB_shader_clock, 
    GL_ARB_shader_draw_parameters, GL_ARB_shader_group_vote, 
    GL_ARB_shader_image_load_store, GL_ARB_shader_image_size, 
    GL_ARB_shader_objects, GL_ARB_shader_precision, 
    GL_ARB_shader_storage_buffer_object, GL_ARB_shader_subroutine, 
    GL_ARB_shader_texture_image_samples, GL_ARB_shader_texture_lod, 
    GL_ARB_shader_viewport_layer_array, GL_ARB_shading_language_420pack, 
    GL_ARB_shading_language_include, GL_ARB_shading_language_packing, 
    GL_ARB_spirv_extensions, GL_ARB_sync, GL_ARB_tessellation_shader, 
    GL_ARB_texture_barrier, GL_ARB_texture_buffer_object, 
    GL_ARB_texture_buffer_object_rgb32, GL_ARB_texture_buffer_range, 
    GL_ARB_texture_compression_bptc, GL_ARB_texture_compression_rgtc, 
    GL_ARB_texture_cube_map_array, GL_ARB_texture_filter_anisotropic, 
    GL_ARB_texture_float, GL_ARB_texture_gather, 
    GL_ARB_texture_mirror_clamp_to_edge, GL_ARB_texture_multisample, 
    GL_ARB_texture_non_power_of_two, GL_ARB_texture_query_levels, 
    GL_ARB_texture_query_lod, GL_ARB_texture_rectangle, GL_ARB_texture_rg, 
    GL_ARB_texture_rgb10_a2ui, GL_ARB_texture_storage, 
    GL_ARB_texture_storage_multisample, GL_ARB_texture_swizzle, 
    GL_ARB_texture_view, GL_ARB_timer_query, GL_ARB_transform_feedback2, 
    GL_ARB_transform_feedback3, GL_ARB_transform_feedback_instanced, 
    GL_ARB_transform_feedback_overflow_query, GL_ARB_uniform_buffer_object, 
    GL_ARB_vertex_array_bgra, GL_ARB_vertex_array_object, 
    GL_ARB_vertex_attrib_64bit, GL_ARB_vertex_attrib_binding, 
    GL_ARB_vertex_buffer_object, GL_ARB_vertex_shader, 
    GL_ARB_vertex_type_10f_11f_11f_rev, GL_ARB_vertex_type_2_10_10_10_rev, 
    GL_ARB_viewport_array, GL_ATI_blend_equation_separate, 
    GL_ATI_texture_float, GL_EXT_EGL_image_storage, GL_EXT_EGL_sync, 
    GL_EXT_abgr, GL_EXT_blend_equation_separate, 
    GL_EXT_demote_to_helper_invocation, GL_EXT_draw_buffers2, 
    GL_EXT_draw_instanced, GL_EXT_framebuffer_blit, 
    GL_EXT_framebuffer_multisample, GL_EXT_framebuffer_multisample_blit_scaled, 
    GL_EXT_framebuffer_object, GL_EXT_framebuffer_sRGB, 
    GL_EXT_packed_depth_stencil, GL_EXT_packed_float, 
    GL_EXT_pixel_buffer_object, GL_EXT_polygon_offset_clamp, 
    GL_EXT_provoking_vertex, GL_EXT_shader_framebuffer_fetch_non_coherent, 
    GL_EXT_shader_integer_mix, GL_EXT_shader_samples_identical, 
    GL_EXT_texture_array, GL_EXT_texture_compression_dxt1, 
    GL_EXT_texture_compression_rgtc, GL_EXT_texture_compression_s3tc, 
    GL_EXT_texture_filter_anisotropic, GL_EXT_texture_integer, 
    GL_EXT_texture_sRGB, GL_EXT_texture_sRGB_R8, GL_EXT_texture_sRGB_decode, 
    GL_EXT_texture_shadow_lod, GL_EXT_texture_shared_exponent, 
    GL_EXT_texture_snorm, GL_EXT_texture_swizzle, GL_EXT_timer_query, 
    GL_EXT_transform_feedback, GL_EXT_vertex_array_bgra, 
    GL_EXT_vertex_attrib_64bit, GL_IBM_multimode_draw_arrays, 
    GL_INTEL_performance_query, GL_KHR_blend_equation_advanced, 
    GL_KHR_context_flush_control, GL_KHR_debug, GL_KHR_no_error, 
    GL_KHR_parallel_shader_compile, GL_KHR_robustness, GL_MESA_pack_invert, 
    GL_MESA_shader_integer_functions, GL_MESA_texture_signed_rgba, 
    GL_NV_compute_shader_derivatives, GL_NV_conditional_render, 
    GL_NV_depth_clamp, GL_NV_packed_depth_stencil, GL_NV_texture_barrier, 
    GL_OES_EGL_image, GL_S3_s3tc

OpenGL version string: 3.0 Mesa 20.0.8
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
    GL_3DFX_texture_compression_FXT1, GL_AMD_conservative_depth, 
    GL_AMD_draw_buffers_blend, GL_AMD_multi_draw_indirect, 
    GL_AMD_seamless_cubemap_per_texture, GL_AMD_shader_trinary_minmax, 
    GL_AMD_texture_texture4, GL_ANGLE_texture_compression_dxt3, 
    GL_ANGLE_texture_compression_dxt5, GL_APPLE_object_purgeable, 
    GL_APPLE_packed_pixels, GL_ARB_ES2_compatibility, 
    GL_ARB_ES3_compatibility, GL_ARB_arrays_of_arrays, 
    GL_ARB_blend_func_extended, GL_ARB_buffer_storage, 
    GL_ARB_clear_buffer_object, GL_ARB_clear_texture, GL_ARB_clip_control, 
    GL_ARB_color_buffer_float, GL_ARB_compressed_texture_pixel_storage, 
    GL_ARB_compute_shader, GL_ARB_conditional_render_inverted, 
    GL_ARB_conservative_depth, GL_ARB_copy_buffer, GL_ARB_copy_image, 
    GL_ARB_cull_distance, GL_ARB_debug_output, GL_ARB_depth_buffer_float, 
    GL_ARB_depth_clamp, GL_ARB_depth_texture, GL_ARB_derivative_control, 
    GL_ARB_draw_buffers, GL_ARB_draw_buffers_blend, 
    GL_ARB_draw_elements_base_vertex, GL_ARB_draw_indirect, 
    GL_ARB_draw_instanced, GL_ARB_explicit_attrib_location, 
    GL_ARB_explicit_uniform_location, GL_ARB_fragment_coord_conventions, 
    GL_ARB_fragment_layer_viewport, GL_ARB_fragment_program, 
    GL_ARB_fragment_program_shadow, GL_ARB_fragment_shader, 
    GL_ARB_framebuffer_no_attachments, GL_ARB_framebuffer_object, 
    GL_ARB_framebuffer_sRGB, GL_ARB_get_program_binary, 
    GL_ARB_get_texture_sub_image, GL_ARB_gl_spirv, GL_ARB_half_float_pixel, 
    GL_ARB_half_float_vertex, GL_ARB_indirect_parameters, 
    GL_ARB_instanced_arrays, GL_ARB_internalformat_query, 
    GL_ARB_internalformat_query2, GL_ARB_invalidate_subdata, 
    GL_ARB_map_buffer_alignment, GL_ARB_map_buffer_range, GL_ARB_multi_bind, 
    GL_ARB_multi_draw_indirect, GL_ARB_multisample, GL_ARB_multitexture, 
    GL_ARB_occlusion_query, GL_ARB_occlusion_query2, 
    GL_ARB_parallel_shader_compile, GL_ARB_pipeline_statistics_query, 
    GL_ARB_pixel_buffer_object, GL_ARB_point_parameters, GL_ARB_point_sprite, 
    GL_ARB_polygon_offset_clamp, GL_ARB_program_interface_query, 
    GL_ARB_provoking_vertex, GL_ARB_robustness, GL_ARB_sample_shading, 
    GL_ARB_sampler_objects, GL_ARB_seamless_cube_map, 
    GL_ARB_seamless_cubemap_per_texture, GL_ARB_separate_shader_objects, 
    GL_ARB_shader_atomic_counter_ops, GL_ARB_shader_atomic_counters, 
    GL_ARB_shader_bit_encoding, GL_ARB_shader_clock, 
    GL_ARB_shader_draw_parameters, GL_ARB_shader_group_vote, 
    GL_ARB_shader_image_load_store, GL_ARB_shader_image_size, 
    GL_ARB_shader_objects, GL_ARB_shader_precision, 
    GL_ARB_shader_storage_buffer_object, GL_ARB_shader_texture_image_samples, 
    GL_ARB_shader_texture_lod, GL_ARB_shading_language_100, 
    GL_ARB_shading_language_420pack, GL_ARB_shading_language_include, 
    GL_ARB_shading_language_packing, GL_ARB_shadow, GL_ARB_spirv_extensions, 
    GL_ARB_sync, GL_ARB_texture_barrier, GL_ARB_texture_border_clamp, 
    GL_ARB_texture_compression, GL_ARB_texture_compression_bptc, 
    GL_ARB_texture_compression_rgtc, GL_ARB_texture_cube_map, 
    GL_ARB_texture_cube_map_array, GL_ARB_texture_env_add, 
    GL_ARB_texture_env_combine, GL_ARB_texture_env_crossbar, 
    GL_ARB_texture_env_dot3, GL_ARB_texture_filter_anisotropic, 
    GL_ARB_texture_float, GL_ARB_texture_gather, 
    GL_ARB_texture_mirror_clamp_to_edge, GL_ARB_texture_mirrored_repeat, 
    GL_ARB_texture_multisample, GL_ARB_texture_non_power_of_two, 
    GL_ARB_texture_query_levels, GL_ARB_texture_query_lod, 
    GL_ARB_texture_rectangle, GL_ARB_texture_rg, GL_ARB_texture_rgb10_a2ui, 
    GL_ARB_texture_storage, GL_ARB_texture_storage_multisample, 
    GL_ARB_texture_swizzle, GL_ARB_texture_view, GL_ARB_timer_query, 
    GL_ARB_transform_feedback2, GL_ARB_transform_feedback3, 
    GL_ARB_transform_feedback_instanced, 
    GL_ARB_transform_feedback_overflow_query, GL_ARB_transpose_matrix, 
    GL_ARB_uniform_buffer_object, GL_ARB_vertex_array_bgra, 
    GL_ARB_vertex_array_object, GL_ARB_vertex_attrib_binding, 
    GL_ARB_vertex_buffer_object, GL_ARB_vertex_program, GL_ARB_vertex_shader, 
    GL_ARB_vertex_type_10f_11f_11f_rev, GL_ARB_vertex_type_2_10_10_10_rev, 
    GL_ARB_window_pos, GL_ATI_blend_equation_separate, GL_ATI_draw_buffers, 
    GL_ATI_separate_stencil, GL_ATI_texture_env_combine3, 
    GL_ATI_texture_float, GL_EXT_EGL_image_storage, GL_EXT_EGL_sync, 
    GL_EXT_abgr, GL_EXT_bgra, GL_EXT_blend_color, 
    GL_EXT_blend_equation_separate, GL_EXT_blend_func_separate, 
    GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_compiled_vertex_array, 
    GL_EXT_copy_texture, GL_EXT_demote_to_helper_invocation, 
    GL_EXT_direct_state_access, GL_EXT_draw_buffers2, GL_EXT_draw_instanced, 
    GL_EXT_draw_range_elements, GL_EXT_fog_coord, GL_EXT_framebuffer_blit, 
    GL_EXT_framebuffer_multisample, GL_EXT_framebuffer_multisample_blit_scaled, 
    GL_EXT_framebuffer_object, GL_EXT_framebuffer_sRGB, 
    GL_EXT_gpu_program_parameters, GL_EXT_gpu_shader4, 
    GL_EXT_multi_draw_arrays, GL_EXT_packed_depth_stencil, 
    GL_EXT_packed_float, GL_EXT_packed_pixels, GL_EXT_pixel_buffer_object, 
    GL_EXT_point_parameters, GL_EXT_polygon_offset_clamp, 
    GL_EXT_provoking_vertex, GL_EXT_rescale_normal, GL_EXT_secondary_color, 
    GL_EXT_separate_specular_color, 
    GL_EXT_shader_framebuffer_fetch_non_coherent, GL_EXT_shader_integer_mix, 
    GL_EXT_shader_samples_identical, GL_EXT_shadow_funcs, 
    GL_EXT_stencil_two_side, GL_EXT_stencil_wrap, GL_EXT_subtexture, 
    GL_EXT_texture, GL_EXT_texture3D, GL_EXT_texture_array, 
    GL_EXT_texture_compression_dxt1, GL_EXT_texture_compression_rgtc, 
    GL_EXT_texture_compression_s3tc, GL_EXT_texture_cube_map, 
    GL_EXT_texture_edge_clamp, GL_EXT_texture_env_add, 
    GL_EXT_texture_env_combine, GL_EXT_texture_env_dot3, 
    GL_EXT_texture_filter_anisotropic, GL_EXT_texture_integer, 
    GL_EXT_texture_lod_bias, GL_EXT_texture_object, GL_EXT_texture_rectangle, 
    GL_EXT_texture_sRGB, GL_EXT_texture_sRGB_R8, GL_EXT_texture_sRGB_decode, 
    GL_EXT_texture_shadow_lod, GL_EXT_texture_shared_exponent, 
    GL_EXT_texture_snorm, GL_EXT_texture_swizzle, GL_EXT_timer_query, 
    GL_EXT_transform_feedback, GL_EXT_vertex_array, GL_EXT_vertex_array_bgra, 
    GL_IBM_multimode_draw_arrays, GL_IBM_rasterpos_clip, 
    GL_IBM_texture_mirrored_repeat, GL_INGR_blend_func_separate, 
    GL_INTEL_performance_query, GL_KHR_blend_equation_advanced, 
    GL_KHR_context_flush_control, GL_KHR_debug, GL_KHR_no_error, 
    GL_KHR_parallel_shader_compile, GL_KHR_robustness, GL_MESA_pack_invert, 
    GL_MESA_shader_integer_functions, GL_MESA_texture_signed_rgba, 
    GL_MESA_window_pos, GL_NV_blend_square, GL_NV_compute_shader_derivatives, 
    GL_NV_conditional_render, GL_NV_depth_clamp, GL_NV_fog_distance, 
    GL_NV_light_max_exponent, GL_NV_packed_depth_stencil, 
    GL_NV_primitive_restart, GL_NV_texgen_reflection, GL_NV_texture_barrier, 
    GL_NV_texture_env_combine4, GL_NV_texture_rectangle, GL_OES_EGL_image, 
    GL_OES_read_format, GL_S3_s3tc, GL_SGIS_generate_mipmap, 
    GL_SGIS_texture_border_clamp, GL_SGIS_texture_edge_clamp, 
    GL_SGIS_texture_lod, GL_SUN_multi_draw_arrays

OpenGL ES profile version string: OpenGL ES 3.0 Mesa 20.0.8
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00
OpenGL ES profile extensions:
    GL_ANGLE_texture_compression_dxt3, GL_ANGLE_texture_compression_dxt5, 
    GL_APPLE_texture_max_level, GL_EXT_EGL_image_storage, 
    GL_EXT_base_instance, GL_EXT_blend_func_extended, GL_EXT_blend_minmax, 
    GL_EXT_clip_control, GL_EXT_clip_cull_distance, GL_EXT_color_buffer_float, 
    GL_EXT_compressed_ETC1_RGB8_sub_texture, GL_EXT_copy_image, 
    GL_EXT_demote_to_helper_invocation, GL_EXT_depth_clamp, 
    GL_EXT_discard_framebuffer, GL_EXT_disjoint_timer_query, 
    GL_EXT_draw_buffers, GL_EXT_draw_buffers_indexed, 
    GL_EXT_draw_elements_base_vertex, GL_EXT_float_blend, GL_EXT_frag_depth, 
    GL_EXT_map_buffer_range, GL_EXT_multi_draw_arrays, 
    GL_EXT_occlusion_query_boolean, GL_EXT_polygon_offset_clamp, 
    GL_EXT_read_format_bgra, GL_EXT_robustness, GL_EXT_sRGB_write_control, 
    GL_EXT_separate_shader_objects, 
    GL_EXT_shader_framebuffer_fetch_non_coherent, GL_EXT_shader_integer_mix, 
    GL_EXT_texture_border_clamp, GL_EXT_texture_compression_bptc, 
    GL_EXT_texture_compression_dxt1, GL_EXT_texture_compression_rgtc, 
    GL_EXT_texture_compression_s3tc, GL_EXT_texture_compression_s3tc_srgb, 
    GL_EXT_texture_filter_anisotropic, GL_EXT_texture_format_BGRA8888, 
    GL_EXT_texture_query_lod, GL_EXT_texture_rg, GL_EXT_texture_sRGB_R8, 
    GL_EXT_texture_sRGB_decode, GL_EXT_texture_shadow_lod, 
    GL_EXT_texture_type_2_10_10_10_REV, GL_EXT_unpack_subimage, 
    GL_INTEL_performance_query, GL_KHR_blend_equation_advanced, 
    GL_KHR_context_flush_control, GL_KHR_debug, GL_KHR_no_error, 
    GL_KHR_parallel_shader_compile, GL_KHR_robustness, 
    GL_MESA_framebuffer_flip_y, GL_MESA_shader_integer_functions, 
    GL_NV_conditional_render, GL_NV_draw_buffers, GL_NV_fbo_color_attachments, 
    GL_NV_read_buffer, GL_NV_read_depth, GL_NV_read_depth_stencil, 
    GL_NV_read_stencil, GL_OES_EGL_image, GL_OES_EGL_image_external, 
    GL_OES_EGL_image_external_essl3, GL_OES_EGL_sync, 
    GL_OES_compressed_ETC1_RGB8_texture, GL_OES_copy_image, GL_OES_depth24, 
    GL_OES_depth_texture, GL_OES_depth_texture_cube_map, 
    GL_OES_draw_buffers_indexed, GL_OES_draw_elements_base_vertex, 
    GL_OES_element_index_uint, GL_OES_fbo_render_mipmap, 
    GL_OES_get_program_binary, GL_OES_mapbuffer, GL_OES_packed_depth_stencil, 
    GL_OES_required_internalformat, GL_OES_rgb8_rgba8, GL_OES_sample_shading, 
    GL_OES_sample_variables, GL_OES_shader_multisample_interpolation, 
    GL_OES_standard_derivatives, GL_OES_stencil8, GL_OES_surfaceless_context, 
    GL_OES_texture_3D, GL_OES_texture_border_clamp, 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, GL_OES_vertex_half_float

90 GLX Visuals
    visual  x   bf lv rg d st  colorbuffer  sr ax dp st accumbuffer  ms  cav
  id dep cl sp  sz l  ci b ro  r  g  b  a F gb bf th cl  r  g  b  a ns b eat
----------------------------------------------------------------------------
0x021 24 tc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 None
0x022 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 None
0x10b 24 tc  0  32  0 r  y .   8  8  8  8 .  .  0  0  0  0  0  0  0  0 0 None
0x10c 24 tc  0  32  0 r  . .   8  8  8  8 .  .  0  0  0  0  0  0  0  0 0 None
0x10d 24 tc  0  32  0 r  . .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 None
0x10e 24 tc  0  24  0 r  y .   8  8  8  0 .  .  0  0  0  0  0  0  0  0 0 None
0x10f 24 tc  0  24  0 r  . .   8  8  8  0 .  .  0  0  0  0  0  0  0  0 0 None
0x110 24 tc  0  24  0 r  y .   8  8  8  0 .  .  0 24  8  0  0  0  0  0 0 None
0x111 24 tc  0  24  0 r  . .   8  8  8  0 .  .  0 24  8  0  0  0  0  0 0 None
0x112 24 tc  0  32  0 r  y .   8  8  8  8 .  s  0  0  0  0  0  0  0  0 0 None
0x113 24 tc  0  32  0 r  . .   8  8  8  8 .  s  0  0  0  0  0  0  0  0 0 None
0x114 24 tc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8  0  0  0  0  0 0 None
0x115 24 tc  0  32  0 r  . .   8  8  8  8 .  s  0 24  8  0  0  0  0  0 0 None
0x116 24 tc  0  24  0 r  y .   8  8  8  0 .  s  0  0  0  0  0  0  0  0 0 None
0x117 24 tc  0  24  0 r  . .   8  8  8  0 .  s  0  0  0  0  0  0  0  0 0 None
0x118 24 tc  0  24  0 r  y .   8  8  8  0 .  s  0 24  8  0  0  0  0  0 0 None
0x119 24 tc  0  24  0 r  . .   8  8  8  0 .  s  0 24  8  0  0  0  0  0 0 None
0x11a 24 tc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 None
0x11b 24 tc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8 16 16 16 16  0 0 Slow
0x11c 24 tc  0  24  0 r  y .   8  8  8  0 .  .  0 24  8  0  0  0  0  0 0 None
0x11d 24 tc  0  24  0 r  y .   8  8  8  0 .  .  0 24  8 16 16 16  0  0 0 Slow
0x11e 24 tc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8  0  0  0  0  0 0 None
0x11f 24 tc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8 16 16 16 16  0 0 Slow
0x120 24 tc  0  24  0 r  y .   8  8  8  0 .  s  0 24  8  0  0  0  0  0 0 None
0x121 24 tc  0  24  0 r  y .   8  8  8  0 .  s  0 24  8 16 16 16  0  0 0 Slow
0x122 24 tc  0  32  0 r  y .   8  8  8  8 .  .  0  0  0  0  0  0  0  4 1 None
0x123 24 tc  0  32  0 r  y .   8  8  8  8 .  .  0  0  0  0  0  0  0  8 1 None
0x124 24 tc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  4 1 None
0x125 24 tc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  8 1 None
0x126 24 tc  0  24  0 r  y .   8  8  8  0 .  .  0  0  0  0  0  0  0  4 1 None
0x127 24 tc  0  24  0 r  y .   8  8  8  0 .  .  0  0  0  0  0  0  0  8 1 None
0x128 24 tc  0  24  0 r  y .   8  8  8  0 .  .  0 24  8  0  0  0  0  4 1 None
0x129 24 tc  0  24  0 r  y .   8  8  8  0 .  .  0 24  8  0  0  0  0  8 1 None
0x12a 24 tc  0  32  0 r  y .   8  8  8  8 .  s  0  0  0  0  0  0  0  4 1 None
0x12b 24 tc  0  32  0 r  y .   8  8  8  8 .  s  0  0  0  0  0  0  0  8 1 None
0x12c 24 tc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8  0  0  0  0  4 1 None
0x12d 24 tc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8  0  0  0  0  8 1 None
0x12e 24 tc  0  24  0 r  y .   8  8  8  0 .  s  0  0  0  0  0  0  0  4 1 None
0x12f 24 tc  0  24  0 r  y .   8  8  8  0 .  s  0  0  0  0  0  0  0  8 1 None
0x130 24 tc  0  24  0 r  y .   8  8  8  0 .  s  0 24  8  0  0  0  0  4 1 None
0x131 24 tc  0  24  0 r  y .   8  8  8  0 .  s  0 24  8  0  0  0  0  8 1 None
0x132 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0  0  0  0  0  0  0  0 0 None
0x133 24 dc  0  32  0 r  . .   8  8  8  8 .  .  0  0  0  0  0  0  0  0 0 None
0x134 24 dc  0  32  0 r  . .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 None
0x135 24 dc  0  24  0 r  y .   8  8  8  0 .  .  0  0  0  0  0  0  0  0 0 None
0x136 24 dc  0  24  0 r  . .   8  8  8  0 .  .  0  0  0  0  0  0  0  0 0 None
0x137 24 dc  0  24  0 r  y .   8  8  8  0 .  .  0 24  8  0  0  0  0  0 0 None
0x138 24 dc  0  24  0 r  . .   8  8  8  0 .  .  0 24  8  0  0  0  0  0 0 None
0x139 24 dc  0  32  0 r  y .   8  8  8  8 .  s  0  0  0  0  0  0  0  0 0 None
0x13a 24 dc  0  32  0 r  . .   8  8  8  8 .  s  0  0  0  0  0  0  0  0 0 None
0x13b 24 dc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8  0  0  0  0  0 0 None
0x13c 24 dc  0  32  0 r  . .   8  8  8  8 .  s  0 24  8  0  0  0  0  0 0 None
0x13d 24 dc  0  24  0 r  y .   8  8  8  0 .  s  0  0  0  0  0  0  0  0 0 None
0x13e 24 dc  0  24  0 r  . .   8  8  8  0 .  s  0  0  0  0  0  0  0  0 0 None
0x13f 24 dc  0  24  0 r  y .   8  8  8  0 .  s  0 24  8  0  0  0  0  0 0 None
0x140 24 dc  0  24  0 r  . .   8  8  8  0 .  s  0 24  8  0  0  0  0  0 0 None
0x141 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 None
0x142 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8 16 16 16 16  0 0 Slow
0x143 24 dc  0  24  0 r  y .   8  8  8  0 .  .  0 24  8  0  0  0  0  0 0 None
0x144 24 dc  0  24  0 r  y .   8  8  8  0 .  .  0 24  8 16 16 16  0  0 0 Slow
0x145 24 dc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8  0  0  0  0  0 0 None
0x146 24 dc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8 16 16 16 16  0 0 Slow
0x147 24 dc  0  24  0 r  y .   8  8  8  0 .  s  0 24  8  0  0  0  0  0 0 None
0x148 24 dc  0  24  0 r  y .   8  8  8  0 .  s  0 24  8 16 16 16  0  0 0 Slow
0x149 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0  0  0  0  0  0  0  4 1 None
0x14a 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0  0  0  0  0  0  0  8 1 None
0x14b 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  4 1 None
0x14c 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  8 1 None
0x14d 24 dc  0  24  0 r  y .   8  8  8  0 .  .  0  0  0  0  0  0  0  4 1 None
0x14e 24 dc  0  24  0 r  y .   8  8  8  0 .  .  0  0  0  0  0  0  0  8 1 None
0x14f 24 dc  0  24  0 r  y .   8  8  8  0 .  .  0 24  8  0  0  0  0  4 1 None
0x150 24 dc  0  24  0 r  y .   8  8  8  0 .  .  0 24  8  0  0  0  0  8 1 None
0x151 24 dc  0  32  0 r  y .   8  8  8  8 .  s  0  0  0  0  0  0  0  4 1 None
0x152 24 dc  0  32  0 r  y .   8  8  8  8 .  s  0  0  0  0  0  0  0  8 1 None
0x153 24 dc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8  0  0  0  0  4 1 None
0x154 24 dc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8  0  0  0  0  8 1 None
0x155 24 dc  0  24  0 r  y .   8  8  8  0 .  s  0  0  0  0  0  0  0  4 1 None
0x156 24 dc  0  24  0 r  y .   8  8  8  0 .  s  0  0  0  0  0  0  0  8 1 None
0x157 24 dc  0  24  0 r  y .   8  8  8  0 .  s  0 24  8  0  0  0  0  4 1 None
0x158 24 dc  0  24  0 r  y .   8  8  8  0 .  s  0 24  8  0  0  0  0  8 1 None
0x09c 32 tc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 None
0x159 32 tc  0  32  0 r  y .   8  8  8  8 .  .  0  0  0  0  0  0  0  0 0 None
0x15a 32 tc  0  32  0 r  . .   8  8  8  8 .  .  0  0  0  0  0  0  0  0 0 None
0x15b 32 tc  0  32  0 r  . .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 None
0x15c 32 tc  0  32  0 r  y .   8  8  8  8 .  s  0  0  0  0  0  0  0  0 0 None
0x15d 32 tc  0  32  0 r  . .   8  8  8  8 .  s  0  0  0  0  0  0  0  0 0 None
0x15e 32 tc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8  0  0  0  0  0 0 None
0x15f 32 tc  0  32  0 r  . .   8  8  8  8 .  s  0 24  8  0  0  0  0  0 0 None
0x160 32 tc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 None
0x161 32 tc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8  0  0  0  0  0 0 None

110 GLXFBConfigs:
    visual  x   bf lv rg d st  colorbuffer  sr ax dp st accumbuffer  ms  cav
  id dep cl sp  sz l  ci b ro  r  g  b  a F gb bf th cl  r  g  b  a ns b eat
----------------------------------------------------------------------------
0x09d  0 tc  0  16  0 r  y .   5  6  5  0 .  .  0  0  0  0  0  0  0  0 0 None
0x09e  0 tc  0  16  0 r  . .   5  6  5  0 .  .  0  0  0  0  0  0  0  0 0 None
0x09f  0 tc  0  16  0 r  y .   5  6  5  0 .  .  0 24  8  0  0  0  0  0 0 None
0x0a0  0 tc  0  16  0 r  . .   5  6  5  0 .  .  0 24  8  0  0  0  0  0 0 None
0x0a1 24 tc  0  32  0 r  y .   8  8  8  8 .  .  0  0  0  0  0  0  0  0 0 None
0x0a2 24 tc  0  32  0 r  . .   8  8  8  8 .  .  0  0  0  0  0  0  0  0 0 None
0x0a3 24 tc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 None
0x0a4 24 tc  0  32  0 r  . .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 None
0x0a5 24 tc  0  24  0 r  y .   8  8  8  0 .  .  0  0  0  0  0  0  0  0 0 None
0x0a6 24 tc  0  24  0 r  . .   8  8  8  0 .  .  0  0  0  0  0  0  0  0 0 None
0x0a7 24 tc  0  24  0 r  y .   8  8  8  0 .  .  0 24  8  0  0  0  0  0 0 None
0x0a8 24 tc  0  24  0 r  . .   8  8  8  0 .  .  0 24  8  0  0  0  0  0 0 None
0x0a9 24 tc  0  32  0 r  y .   8  8  8  8 .  s  0  0  0  0  0  0  0  0 0 None
0x0aa 24 tc  0  32  0 r  . .   8  8  8  8 .  s  0  0  0  0  0  0  0  0 0 None
0x0ab 24 tc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8  0  0  0  0  0 0 None
0x0ac 24 tc  0  32  0 r  . .   8  8  8  8 .  s  0 24  8  0  0  0  0  0 0 None
0x0ad 24 tc  0  24  0 r  y .   8  8  8  0 .  s  0  0  0  0  0  0  0  0 0 None
0x0ae 24 tc  0  24  0 r  . .   8  8  8  0 .  s  0  0  0  0  0  0  0  0 0 None
0x0af 24 tc  0  24  0 r  y .   8  8  8  0 .  s  0 24  8  0  0  0  0  0 0 None
0x0b0 24 tc  0  24  0 r  . .   8  8  8  0 .  s  0 24  8  0  0  0  0  0 0 None
0x0b1  0 tc  0  16  0 r  y .   5  6  5  0 .  .  0 24  8  0  0  0  0  0 0 None
0x0b2  0 tc  0  16  0 r  y .   5  6  5  0 .  .  0 24  8 16 16 16  0  0 0 Slow
0x0b3 24 tc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 None
0x0b4 24 tc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8 16 16 16 16  0 0 Slow
0x0b5 24 tc  0  24  0 r  y .   8  8  8  0 .  .  0 24  8  0  0  0  0  0 0 None
0x0b6 24 tc  0  24  0 r  y .   8  8  8  0 .  .  0 24  8 16 16 16  0  0 0 Slow
0x0b7 24 tc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8  0  0  0  0  0 0 None
0x0b8 24 tc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8 16 16 16 16  0 0 Slow
0x0b9 24 tc  0  24  0 r  y .   8  8  8  0 .  s  0 24  8  0  0  0  0  0 0 None
0x0ba 24 tc  0  24  0 r  y .   8  8  8  0 .  s  0 24  8 16 16 16  0  0 0 Slow
0x0bb  0 tc  0  16  0 r  y .   5  6  5  0 .  .  0  0  0  0  0  0  0  4 1 None
0x0bc  0 tc  0  16  0 r  y .   5  6  5  0 .  .  0  0  0  0  0  0  0  8 1 None
0x0bd  0 tc  0  16  0 r  y .   5  6  5  0 .  .  0 24  8  0  0  0  0  4 1 None
0x0be  0 tc  0  16  0 r  y .   5  6  5  0 .  .  0 24  8  0  0  0  0  8 1 None
0x0bf 24 tc  0  32  0 r  y .   8  8  8  8 .  .  0  0  0  0  0  0  0  4 1 None
0x0c0 24 tc  0  32  0 r  y .   8  8  8  8 .  .  0  0  0  0  0  0  0  8 1 None
0x0c1 24 tc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  4 1 None
0x0c2 24 tc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  8 1 None
0x0c3 24 tc  0  24  0 r  y .   8  8  8  0 .  .  0  0  0  0  0  0  0  4 1 None
0x0c4 24 tc  0  24  0 r  y .   8  8  8  0 .  .  0  0  0  0  0  0  0  8 1 None
0x0c5 24 tc  0  24  0 r  y .   8  8  8  0 .  .  0 24  8  0  0  0  0  4 1 None
0x0c6 24 tc  0  24  0 r  y .   8  8  8  0 .  .  0 24  8  0  0  0  0  8 1 None
0x0c7 24 tc  0  32  0 r  y .   8  8  8  8 .  s  0  0  0  0  0  0  0  4 1 None
0x0c8 24 tc  0  32  0 r  y .   8  8  8  8 .  s  0  0  0  0  0  0  0  8 1 None
0x0c9 24 tc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8  0  0  0  0  4 1 None
0x0ca 24 tc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8  0  0  0  0  8 1 None
0x0cb 24 tc  0  24  0 r  y .   8  8  8  0 .  s  0  0  0  0  0  0  0  4 1 None
0x0cc 24 tc  0  24  0 r  y .   8  8  8  0 .  s  0  0  0  0  0  0  0  8 1 None
0x0cd 24 tc  0  24  0 r  y .   8  8  8  0 .  s  0 24  8  0  0  0  0  4 1 None
0x0ce 24 tc  0  24  0 r  y .   8  8  8  0 .  s  0 24  8  0  0  0  0  8 1 None
0x0cf  0 dc  0  16  0 r  y .   5  6  5  0 .  .  0  0  0  0  0  0  0  0 0 None
0x0d0  0 dc  0  16  0 r  . .   5  6  5  0 .  .  0  0  0  0  0  0  0  0 0 None
0x0d1  0 dc  0  16  0 r  y .   5  6  5  0 .  .  0 24  8  0  0  0  0  0 0 None
0x0d2  0 dc  0  16  0 r  . .   5  6  5  0 .  .  0 24  8  0  0  0  0  0 0 None
0x0d3 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0  0  0  0  0  0  0  0 0 None
0x0d4 24 dc  0  32  0 r  . .   8  8  8  8 .  .  0  0  0  0  0  0  0  0 0 None
0x0d5 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 None
0x0d6 24 dc  0  32  0 r  . .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 None
0x0d7 24 dc  0  24  0 r  y .   8  8  8  0 .  .  0  0  0  0  0  0  0  0 0 None
0x0d8 24 dc  0  24  0 r  . .   8  8  8  0 .  .  0  0  0  0  0  0  0  0 0 None
0x0d9 24 dc  0  24  0 r  y .   8  8  8  0 .  .  0 24  8  0  0  0  0  0 0 None
0x0da 24 dc  0  24  0 r  . .   8  8  8  0 .  .  0 24  8  0  0  0  0  0 0 None
0x0db 24 dc  0  32  0 r  y .   8  8  8  8 .  s  0  0  0  0  0  0  0  0 0 None
0x0dc 24 dc  0  32  0 r  . .   8  8  8  8 .  s  0  0  0  0  0  0  0  0 0 None
0x0dd 24 dc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8  0  0  0  0  0 0 None
0x0de 24 dc  0  32  0 r  . .   8  8  8  8 .  s  0 24  8  0  0  0  0  0 0 None
0x0df 24 dc  0  24  0 r  y .   8  8  8  0 .  s  0  0  0  0  0  0  0  0 0 None
0x0e0 24 dc  0  24  0 r  . .   8  8  8  0 .  s  0  0  0  0  0  0  0  0 0 None
0x0e1 24 dc  0  24  0 r  y .   8  8  8  0 .  s  0 24  8  0  0  0  0  0 0 None
0x0e2 24 dc  0  24  0 r  . .   8  8  8  0 .  s  0 24  8  0  0  0  0  0 0 None
0x0e3  0 dc  0  16  0 r  y .   5  6  5  0 .  .  0 24  8  0  0  0  0  0 0 None
0x0e4  0 dc  0  16  0 r  y .   5  6  5  0 .  .  0 24  8 16 16 16  0  0 0 Slow
0x0e5 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 None
0x0e6 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8 16 16 16 16  0 0 Slow
0x0e7 24 dc  0  24  0 r  y .   8  8  8  0 .  .  0 24  8  0  0  0  0  0 0 None
0x0e8 24 dc  0  24  0 r  y .   8  8  8  0 .  .  0 24  8 16 16 16  0  0 0 Slow
0x0e9 24 dc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8  0  0  0  0  0 0 None
0x0ea 24 dc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8 16 16 16 16  0 0 Slow
0x0eb 24 dc  0  24  0 r  y .   8  8  8  0 .  s  0 24  8  0  0  0  0  0 0 None
0x0ec 24 dc  0  24  0 r  y .   8  8  8  0 .  s  0 24  8 16 16 16  0  0 0 Slow
0x0ed  0 dc  0  16  0 r  y .   5  6  5  0 .  .  0  0  0  0  0  0  0  4 1 None
0x0ee  0 dc  0  16  0 r  y .   5  6  5  0 .  .  0  0  0  0  0  0  0  8 1 None
0x0ef  0 dc  0  16  0 r  y .   5  6  5  0 .  .  0 24  8  0  0  0  0  4 1 None
0x0f0  0 dc  0  16  0 r  y .   5  6  5  0 .  .  0 24  8  0  0  0  0  8 1 None
0x0f1 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0  0  0  0  0  0  0  4 1 None
0x0f2 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0  0  0  0  0  0  0  8 1 None
0x0f3 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  4 1 None
0x0f4 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  8 1 None
0x0f5 24 dc  0  24  0 r  y .   8  8  8  0 .  .  0  0  0  0  0  0  0  4 1 None
0x0f6 24 dc  0  24  0 r  y .   8  8  8  0 .  .  0  0  0  0  0  0  0  8 1 None
0x0f7 24 dc  0  24  0 r  y .   8  8  8  0 .  .  0 24  8  0  0  0  0  4 1 None
0x0f8 24 dc  0  24  0 r  y .   8  8  8  0 .  .  0 24  8  0  0  0  0  8 1 None
0x0f9 24 dc  0  32  0 r  y .   8  8  8  8 .  s  0  0  0  0  0  0  0  4 1 None
0x0fa 24 dc  0  32  0 r  y .   8  8  8  8 .  s  0  0  0  0  0  0  0  8 1 None
0x0fb 24 dc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8  0  0  0  0  4 1 None
0x0fc 24 dc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8  0  0  0  0  8 1 None
0x0fd 24 dc  0  24  0 r  y .   8  8  8  0 .  s  0  0  0  0  0  0  0  4 1 None
0x0fe 24 dc  0  24  0 r  y .   8  8  8  0 .  s  0  0  0  0  0  0  0  8 1 None
0x0ff 24 dc  0  24  0 r  y .   8  8  8  0 .  s  0 24  8  0  0  0  0  4 1 None
0x100 24 dc  0  24  0 r  y .   8  8  8  0 .  s  0 24  8  0  0  0  0  8 1 None
0x101 32 tc  0  32  0 r  y .   8  8  8  8 .  .  0  0  0  0  0  0  0  0 0 None
0x102 32 tc  0  32  0 r  . .   8  8  8  8 .  .  0  0  0  0  0  0  0  0 0 None
0x103 32 tc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 None
0x104 32 tc  0  32  0 r  . .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 None
0x105 32 tc  0  32  0 r  y .   8  8  8  8 .  s  0  0  0  0  0  0  0  0 0 None
0x106 32 tc  0  32  0 r  . .   8  8  8  8 .  s  0  0  0  0  0  0  0  0 0 None
0x107 32 tc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8  0  0  0  0  0 0 None
0x108 32 tc  0  32  0 r  . .   8  8  8  8 .  s  0 24  8  0  0  0  0  0 0 None
0x109 32 tc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 None
0x10a 32 tc  0  32  0 r  y .   8  8  8  8 .  s  0 24  8  0  0  0  0  0 0 None

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Be-ing commented Dec 27, 2020

Can you see also the difference?

Yes, I can see the difference with the vsync test. But I am not so sure that test is practically relevant. Do you see a difference in the real waveforms?

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Be-ing commented Dec 27, 2020

My goal is to try to get smooth waveform scrolling without relying on QGLWidget::swap which has no equivalent in Qt 6.

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esbrandt commented Dec 27, 2020

Crashes on launch

Process:               mixxx [47376]
Path:                  /Applications/Mixxx.app/Contents/MacOS/mixxx
Identifier:            org.mixxx.mixxx
Version:               2.3.0 (2.3.0)
Code Type:             X86-64 (Native)
Parent Process:        bash [47362]
Responsible:           mixxx [47376]
User ID:               501

Date/Time:             2020-12-27 14:07:53.549 +0100
OS Version:            Mac OS X 10.14.6 (18G6042)
Report Version:        12
Bridge OS Version:     4.6 (17P6610)
Anonymous UUID:        

Sleep/Wake UUID:       

Time Awake Since Boot: 150000 seconds
Time Since Wake:       4000 seconds

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_CRASH (SIGABRT)
Exception Codes:       0x0000000000000000, 0x0000000000000000
Exception Note:        EXC_CORPSE_NOTIFY

Application Specific Information:
abort() called

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib        	0x00007fff602eb2c2 __pthread_kill + 10
1   libsystem_pthread.dylib       	0x00007fff603a6bf1 pthread_kill + 284
2   libsystem_c.dylib             	0x00007fff602556a6 abort + 127
3   org.qt-project.QtCore         	0x000000010f212909 qt_message_fatal(QtMsgType, QMessageLogContext const&, QString const&) + 9
4   org.qt-project.QtCore         	0x000000010f53586e QMessageLogger::fatal(char const*, ...) const + 196
5   org.mixxx.mixxx               	0x000000010cd9c223 mixxx::(anonymous namespace)::handleMessage(QtMsgType, QMessageLogContext const&, QString const&) (.cold.1) + 99

Info from log
DEBUG ASSERT: "flags.testFlag(ControlFlag::NoAssertIfMissing)" in function static QSharedPointer<ControlDoublePrivate> ControlDoublePrivate::getControl(const ConfigKey &, ControlFlags, ControlObject *, bool, bool, bool, double) at /Users/runner/work/mixxx/mixxx/src/control/control.cpp:151 Abort trap: 6 $

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Be-ing commented Dec 27, 2020

@esbrandt that's unrelated.

@daschuer
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daschuer commented Dec 27, 2020

Yes, I can see the difference with the vsync test. But I am not so sure that test is practically relevant. Do you see a difference in the real waveforms?

Yes there is a difference when using real waveform. The ascii art is intended to explain why. Do you understand this?

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daschuer commented Dec 27, 2020

My goal is to try to get smooth waveform scrolling without relying on QGLWidget::swap which has no equivalent in Qt 6.

The swap is an OpenGL command to the GPU. Also the underlying anti tearing or vsync solution is a GPU topic. This means, all this is there with any framework QGLWidget, QOpenGLWidget and Quick.

The issue we need to solve is to sync the rendering reliable with the swap interval that is used internally. By luck there is such a sync already implemented, or we need to bypass it and do it ourselves like done in the current implementation.

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github-actions Bot commented Mar 28, 2021

This PR is marked as stale because it has been open 90 days with no activity.

@github-actions github-actions Bot added the stale Stale issues that haven't been updated for a long time. label Mar 28, 2021
@Be-ing Be-ing closed this Nov 30, 2021
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