The open source OpenXR runtime
u/pacing: Add env variable to set present to display offset
+5
-1
+5
-1
src/xrt/auxiliary/util/u_pacing_compositor_fake.c
+5
-1
src/xrt/auxiliary/util/u_pacing_compositor_fake.c
···
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*
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*/
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DEBUG_GET_ONCE_FLOAT_OPTION(present_to_display_offset_ms, "U_PACING_COMP_PRESENT_TO_DISPLAY_OFFSET_MS", 4.0f)
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DEBUG_GET_ONCE_FLOAT_OPTION(min_comp_time_ms, "U_PACING_COMP_MIN_TIME_MS", 3.0f)
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/*!
···
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// To make sure the code can start from a non-zero frame id.
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ft->frame_id_generator = 5;
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// An arbitrary guess, that happens to be based on Index.
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float present_to_display_offset_ms = debug_get_float_option_present_to_display_offset_ms();
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// Present to display offset, aka vblank to pixel turning into photons.
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ft->present_to_display_offset_ms = (struct u_var_draggable_f32){
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.val = 4.0, // An arbitrary guess, that happens to be based on Index.
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.val = present_to_display_offset_ms,
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.min = 1.0, // A lot of things assumes this is not negative.
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.step = 0.1,
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.max = +40.0,