Hello,
Thankl you, The code
clear all; Screen(‘Preference’,‘Verbosity’,10); Screen(‘Preference’,‘VisualDebugLevel’,6); PerceptualVBLSyncTest;
Gives a blinking screen on both the monitor and the projector(when it is set as main display)
While I set the projector to main display and run the code on MATLAB,the following is displayed:
PTB-DEBUG: PsychOSOpenOnscreenWindow: Entering Win32 specific window setup…
PTB-DEBUG: Checking for DWM desktop compositor support… … DWM available on this Vista (or later) system. Binding controls … …done
PTB-DEBUG: Dual-display operation on logical screen zero → Switching both screens 1 and 2 into fullscreen mode.
PTB-DEBUG: Switching display for screen 1 to fullscreen mode with resolution 1680 x 1050 with bpp = 32 @ 60 Hz.
PTB-DEBUG: Switching display for screen 2 to fullscreen mode with resolution 1920 x 1080 with bpp = 32 @ 59 Hz.
PTB-DEBUG: PsychOSOpenOnscreenWindow: Window parameters computed, display switch to fullscreen done (if needed). Registering window class…
PTB-DEBUG: Window enumeration done. Our hostwindow is HWND=0000000000050478, Name: ‘MATLAB R2020b - academic use’
PTB-DEBUG: PsychOSOpenOnscreenWindow: Window class registered - Creating GDI window…
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): WM_SIZE!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: Created onscreen window has position 0 x 0 and a size of 3840 x 1080.
PTB-DEBUG: PsychOSOpenOnscreenWindow: Window created - Pixelformat selection…
PTB-DEBUG: PsychOSOpenOnscreenWindow: ChoosePixelFormat(), SetPixelFormat() done… Creating OpenGL context…
PTB-DEBUG: PsychOSOpenOnscreenWindow: Context created - Activating and binding context…
PTB-DEBUG: PsychOSOpenOnscreenWindow: Online - glewInit()…
PTB-INFO: Using GLEW version 2.1.0 for automatic detection of OpenGL extensions…
PTB-DEBUG: PsychOSOpenOnscreenWindow: Mastercontext created, activated and bound - Enabling multisampling if needed…
PTB-DEBUG: Window and master OpenGL context creation finished.
PTB-DEBUG: Before slaveWindow context sharing: glGetString reports 0000020914383740 pointer…
PTB-DEBUG: After slaveWindow context sharing: glGetString reports 0000020914383740 pointer…
PTB-DEBUG: Final low-level window setup: ShowWindow(), SetCapture(), diagnostics…
PTB-DEBUG: OpenGL initialization of all master-/slave-/shared-/userspace contexts finished…
PTB-DEBUG: Final low-level window setup: ShowWindow(), SetCapture(), diagnostics…
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: Executed SetForegroundWindow() and SetFocus() on window to optimize pageflipping and timing.
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): WM_PAINT!
PTB-DEBUG: MS-Vista+ 1, DWM enabled 1, screen 0, primary 2, monitorDPI 96, primaryDPI 96
PTB-DEBUG: Final low-level window setup finished. Continuing with OS-independent setup.
PTB-INFO: Fixed point precision integer framebuffer enabled.
PTB-INFO: System Frame buffer provides 8 bits for red channel.
PTB-INFO: System Frame buffer provides 8 bits for green channel.
PTB-INFO: System Frame buffer provides 8 bits for blue channel.
PTB-INFO: System frame buffer provides 8 bits for alpha channel, but effective alpha bits depends on imaging pipeline setup, if any.
PTB-DEBUG: PPM file magic is P6
→ Ok
Created by GIMP version 2.10.22 PNM plug-in
PTB-DEBUG: Recognized splash image of 1000 x 750 pixels, maxlevel 255. Loading…
OpenGL-Vendor / renderer / version are: Intel - Intel® HD Graphics 530 - 4.5.0 - Build 22.20.16.4811
OpenGL-Extensions are: GL_3DFX_texture_compression_FXT1 GL_AMD_depth_clamp_separate GL_AMD_vertex_shader_layer GL_AMD_vertex_shader_viewport_index GL_ARB_ES2_compatibility GL_ARB_ES3_1_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_cl_event GL_ARB_clear_buffer_object GL_ARB_clear_texture GL_ARB_clip_control GL_ARB_color_buffer_float GL_ARB_compatibility 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_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_program GL_ARB_fragment_program_shadow GL_ARB_fragment_shader GL_ARB_fragment_shader_interlock GL_ARB_framebuffer_no_attachments GL_ARB_framebuffer_object GL_ARB_framebuffer_sRGB GL_ARB_geometry_shader4 GL_ARB_get_program_binary GL_ARB_get_texture_sub_image 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_multisample GL_ARB_multitexture GL_ARB_occlusion_query GL_ARB_occlusion_query2 GL_ARB_pixel_buffer_object GL_ARB_point_parameters GL_ARB_point_sprite GL_ARB_post_depth_coverage GL_ARB_program_interface_query GL_ARB_provoking_vertex GL_ARB_query_buffer_object GL_ARB_robust_buffer_access_behavior GL_ARB_robustness GL_ARB_robustness_isolation 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_counters GL_ARB_shader_bit_encoding GL_ARB_shader_draw_parameters GL_ARB_shader_image_load_store GL_ARB_shader_image_size GL_ARB_shader_objects GL_ARB_shader_precision GL_ARB_shader_stencil_export GL_ARB_shader_storage_buffer_object GL_ARB_shader_subroutine GL_ARB_shader_texture_image_samples GL_ARB_shading_language_100 GL_ARB_shading_language_420pack GL_ARB_shading_language_packing GL_ARB_shadow GL_ARB_stencil_texturing GL_ARB_sync GL_ARB_tessellation_shader GL_ARB_texture_barrier GL_ARB_texture_border_clamp GL_ARB_texture_buffer_object_rgb32 GL_ARB_texture_buffer_range 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_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_stencil8 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_transpose_matrix 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_program 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_ARB_window_pos GL_ATI_separate_stencil 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_clip_volume_hint GL_EXT_compiled_vertex_array GL_EXT_direct_state_access GL_EXT_draw_buffers2 GL_EXT_draw_range_elements GL_EXT_fog_coord GL_EXT_framebuffer_blit GL_EXT_framebuffer_multisample GL_EXT_framebuffer_object GL_EXT_geometry_shader4 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_polygon_offset_clamp GL_EXT_rescale_normal GL_EXT_secondary_color GL_EXT_separate_specular_color GL_EXT_shader_framebuffer_fetch GL_EXT_shader_integer_mix GL_EXT_shadow_funcs GL_EXT_stencil_two_side GL_EXT_stencil_wrap GL_EXT_texture3D GL_EXT_texture_array GL_EXT_texture_compression_s3tc GL_EXT_texture_edge_clamp GL_EXT_texture_env_add GL_EXT_texture_env_combine GL_EXT_texture_filter_anisotropic GL_EXT_texture_integer GL_EXT_texture_lod_bias GL_EXT_texture_rectangle GL_EXT_texture_sRGB GL_EXT_texture_sRGB_decode GL_EXT_texture_shared_exponent GL_EXT_texture_snorm GL_EXT_texture_storage GL_EXT_texture_swizzle GL_EXT_timer_query GL_EXT_transform_feedback GL_IBM_texture_mirrored_repeat GL_INTEL_conservative_rasterization GL_INTEL_fragment_shader_ordering GL_INTEL_framebuffer_CMAA GL_INTEL_map_texture GL_INTEL_multi_rate_fragment_shader GL_INTEL_performance_query GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent GL_KHR_context_flush_control GL_KHR_debug GL_KHR_texture_compression_astc_ldr GL_NV_blend_square GL_NV_conditional_render GL_NV_primitive_restart GL_NV_texgen_reflection GL_SGIS_generate_mipmap GL_SGIS_texture_edge_clamp GL_SGIS_texture_lod GL_SUN_multi_draw_arrays GL_WIN_swap_hint
PTB-DEBUG: Not running on Mesa graphics library.
PTB-DEBUG: Interrogating Low-level renderer capabilities for onscreen window with handle 10:
Indicator variables: FBO’s 1, ATI_texture_float 0, ARB_texture_float 1, Vendor Intel, Renderer Intel® HD Graphics 530.
Indicator variables: maxcolorattachments = 8, maxrectangletexturesize = 16384, maxnativealuinstructions = 1447.
GPU supports non-power-of-two textures.
Hardware supports signed normalized textures of 16 bpc integer format.
Basic framebuffer objects with rectangle texture rendertargets supported → RGBA8 rendertargets with blending.
Framebuffer objects support fast blitting between each other.
Framebuffer objects support anti-aliasing via multisampling.
Hardware supports floating point textures of 16bpc and 32bpc float format.
Assuming HD graphics core or later: Hardware supports full 16/32 bit floating point textures, frame buffers, filtering and blending, as well as some 32 bit float shading.
Assuming hardware supports native OpenGL primitive smoothing (points, lines).
Float color value 0.5 → fixed point reads back as 128 ==> Rounds.
No compiled in support for OpenML OML_sync_control extension.
PTB-DEBUG: Interrogation done.
PTB-DEBUG: glClear splash image top-left reference pixel: 90 0 90
PTB-INFO: Threshold Settings for successfull video refresh calibration are: maxStdDev = 0.200000 msecs, maxDeviation = 10.000000 %, minSamples = 50, maxDuration = 5.000000 secs.
PTB-DEBUG: Could not enable REALTIME_PRIORITY_CLASS scheduling! Retrying with HIGH_PRIORITY_CLASS…
PTB-INFO: The detected endline of the vertical blank interval is equal or lower than the startline. This indicates
PTB-INFO: that i couldn’t detect the duration of the vertical blank interval and won’t be able to correct timestamps
PTB-INFO: for it. This will introduce a very small and constant offset (typically << 1 msec). Read ‘help BeampositionQueries’
PTB-INFO: for how to correct this, should you really require that last few microseconds of precision.
PTB-INFO: Btw. this can also mean that your systems beamposition queries are slightly broken. It may help timing precision to
PTB-INFO: enable the beamposition workaround, as explained in ‘help ConserveVRAMSettings’, section ‘kPsychUseBeampositionQueryWorkaround’.
PTB-DEBUG: Could not enable REALTIME_PRIORITY_CLASS scheduling! Retrying with HIGH_PRIORITY_CLASS…
PTB-DEBUG: Output of all acquired samples of calibration run follows:
PTB-DEBUG: Sample 0: 0.000000
PTB-DEBUG: Sample 1: 0.013569
PTB-DEBUG: Sample 2: 0.016612
PTB-DEBUG: Sample 3: 0.017030
PTB-DEBUG: Sample 4: 0.016660
PTB-DEBUG: Sample 5: 0.016923
PTB-DEBUG: Sample 6: 0.016338
PTB-DEBUG: Sample 7: 0.017147
PTB-DEBUG: Sample 8: 0.016494
PTB-DEBUG: Sample 9: 0.016990
PTB-DEBUG: Sample 10: 0.016593
PTB-DEBUG: Sample 11: 0.016507
PTB-DEBUG: Sample 12: 0.016665
PTB-DEBUG: Sample 13: 0.016429
PTB-DEBUG: Sample 14: 0.017065
PTB-DEBUG: Sample 15: 0.016502
PTB-DEBUG: Sample 16: 0.016509
PTB-DEBUG: Sample 17: 0.017034
PTB-DEBUG: Sample 18: 0.016264
PTB-DEBUG: Sample 19: 0.016928
PTB-DEBUG: Sample 20: 0.016846
PTB-DEBUG: Sample 21: 0.016511
PTB-DEBUG: Sample 22: 0.016501
PTB-DEBUG: Sample 23: 0.017028
PTB-DEBUG: Sample 24: 0.016286
PTB-DEBUG: Sample 25: 0.016793
PTB-DEBUG: Sample 26: 0.016964
PTB-DEBUG: Sample 27: 0.016510
PTB-DEBUG: Sample 28: 0.016504
PTB-DEBUG: Sample 29: 0.017056
PTB-DEBUG: Sample 30: 0.016360
PTB-DEBUG: Sample 31: 0.016632
PTB-DEBUG: Sample 32: 0.016959
PTB-DEBUG: Sample 33: 0.016560
PTB-DEBUG: Sample 34: 0.016744
PTB-DEBUG: Sample 35: 0.016814
PTB-DEBUG: Sample 36: 0.016493
PTB-DEBUG: Sample 37: 0.016623
PTB-DEBUG: Sample 38: 0.016962
PTB-DEBUG: Sample 39: 0.016462
PTB-DEBUG: Sample 40: 0.016626
PTB-DEBUG: Sample 41: 0.016919
PTB-DEBUG: Sample 42: 0.016437
PTB-DEBUG: Sample 43: 0.016816
PTB-DEBUG: Sample 44: 0.016808
PTB-DEBUG: Sample 45: 0.016282
PTB-DEBUG: Sample 46: 0.016939
PTB-DEBUG: Sample 47: 0.016786
PTB-DEBUG: Sample 48: 0.016368
PTB-DEBUG: Sample 49: 0.016760
PTB-DEBUG: Sample 50: 0.016885
PTB-DEBUG: End of calibration data for this run…
PTB-INFO: OpenGL-Renderer is Intel :: Intel® HD Graphics 530 :: 4.5.0 - Build 22.20.16.4811
PTB-INFO: VBL startline = 1080 , VBL Endline = 1080
PTB-INFO: Measured monitor refresh interval from beamposition = 16.681171 ms [59.947828 Hz].
PTB-INFO: Will use beamposition query for accurate Flip time stamping.
PTB-INFO: Measured monitor refresh interval from VBLsync = 16.629890 ms [60.132689 Hz]. (50 valid samples taken, stddev=0.504155 ms.)
PTB-INFO: Reported monitor refresh interval from operating system = 16.949153 ms [59.000000 Hz].
PTB-INFO: Small deviations between reported values are normal and no reason to worry.
PTB-INFO: ==============================================================================================================================
PTB-INFO: WINDOWS DWM DESKTOP COMPOSITOR IS ACTIVE. On this Windows-10 or later system, Psychtoolbox can no longer reliably detect if
PTB-INFO: this will cause trouble for timing and integrity of visual stimuli or not. You might be just fine, or you could be in trouble.
PTB-INFO: Use external measurement equipment and independent procedures to verify reliability of timing if you care about proper timing.
PTB-INFO: ==============================================================================================================================
WARNING: Couldn’t compute a reliable estimate of monitor refresh interval! Trouble with VBL syncing?!?
----- ! PTB - ERROR: SYNCHRONIZATION FAILURE ! -----
One or more internal checks (see Warnings above) indicate that synchronization
of Psychtoolbox to the vertical retrace (VBL) is not working on your setup.
This will seriously impair proper stimulus presentation and stimulus presentation timing!
Please read ‘help SyncTrouble’ for information about how to solve or work-around the problem.
You can force Psychtoolbox to continue, despite the severe problems, by adding the command
Screen(‘Preference’, ‘SkipSyncTests’, 1); at the top of your script, if you really know what you are doing.
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
PTB-DEBUG: WndProc(): Called!
Error using Screen
See error message printed above.
Error in project (line 44)
SLM.window = Screen(‘OpenWindow’,0);
Error in main_projector_control (line 90)
[final_projection_time] = project(params,projection_set);
I uploaded the files for the display resolution.
Please let me know if I have to change something.