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debug: Adds CLUTTER_DEBUG=disable-swap-events option
This allows us to forcibly disable the use of the GLX_INTEL_swap_events extension for testing or debugging purposes.
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@ -7,24 +7,25 @@
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G_BEGIN_DECLS
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typedef enum {
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CLUTTER_DEBUG_MISC = 1 << 0,
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CLUTTER_DEBUG_ACTOR = 1 << 1,
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CLUTTER_DEBUG_TEXTURE = 1 << 2,
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CLUTTER_DEBUG_EVENT = 1 << 3,
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CLUTTER_DEBUG_PAINT = 1 << 4,
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CLUTTER_DEBUG_GL = 1 << 5,
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CLUTTER_DEBUG_ALPHA = 1 << 6,
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CLUTTER_DEBUG_BEHAVIOUR = 1 << 7,
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CLUTTER_DEBUG_PANGO = 1 << 8,
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CLUTTER_DEBUG_BACKEND = 1 << 9,
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CLUTTER_DEBUG_SCHEDULER = 1 << 10,
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CLUTTER_DEBUG_SCRIPT = 1 << 11,
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CLUTTER_DEBUG_SHADER = 1 << 12,
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CLUTTER_DEBUG_MULTISTAGE = 1 << 13,
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CLUTTER_DEBUG_ANIMATION = 1 << 14,
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CLUTTER_DEBUG_LAYOUT = 1 << 15,
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CLUTTER_DEBUG_NOP_PICKING = 1 << 16,
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CLUTTER_DEBUG_DUMP_PICK_BUFFERS = 1 << 17,
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CLUTTER_DEBUG_MISC = 1 << 0,
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CLUTTER_DEBUG_ACTOR = 1 << 1,
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CLUTTER_DEBUG_TEXTURE = 1 << 2,
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CLUTTER_DEBUG_EVENT = 1 << 3,
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CLUTTER_DEBUG_PAINT = 1 << 4,
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CLUTTER_DEBUG_GL = 1 << 5,
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CLUTTER_DEBUG_ALPHA = 1 << 6,
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CLUTTER_DEBUG_BEHAVIOUR = 1 << 7,
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CLUTTER_DEBUG_PANGO = 1 << 8,
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CLUTTER_DEBUG_BACKEND = 1 << 9,
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CLUTTER_DEBUG_SCHEDULER = 1 << 10,
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CLUTTER_DEBUG_SCRIPT = 1 << 11,
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CLUTTER_DEBUG_SHADER = 1 << 12,
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CLUTTER_DEBUG_MULTISTAGE = 1 << 13,
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CLUTTER_DEBUG_ANIMATION = 1 << 14,
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CLUTTER_DEBUG_LAYOUT = 1 << 15,
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CLUTTER_DEBUG_NOP_PICKING = 1 << 16,
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CLUTTER_DEBUG_DUMP_PICK_BUFFERS = 1 << 17,
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CLUTTER_DEBUG_DISABLE_SWAP_EVENTS = 1 << 18,
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} ClutterDebugFlag;
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#ifdef CLUTTER_ENABLE_DEBUG
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@ -162,7 +162,8 @@ static const GDebugKey clutter_debug_keys[] = {
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{ "animation", CLUTTER_DEBUG_ANIMATION },
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{ "layout", CLUTTER_DEBUG_LAYOUT },
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{ "nop-picking", CLUTTER_DEBUG_NOP_PICKING },
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{ "dump-pick-buffers", CLUTTER_DEBUG_DUMP_PICK_BUFFERS }
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{ "dump-pick-buffers", CLUTTER_DEBUG_DUMP_PICK_BUFFERS },
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{ "disable-swap-events", CLUTTER_DEBUG_DISABLE_SWAP_EVENTS }
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};
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#endif /* CLUTTER_ENABLE_DEBUG */
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@ -331,7 +331,8 @@ clutter_backend_glx_get_features (ClutterBackend *backend)
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/* GLX_INTEL_swap_event allows us to avoid blocking the CPU while
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* we wait for glXSwapBuffers to complete, and instead we get an X
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* event notifying us of completion... */
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if (cogl_check_extension ("GLX_INTEL_swap_event", glx_extensions) &&
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if (!(clutter_debug_flags & CLUTTER_DEBUG_DISABLE_SWAP_EVENTS) &&
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cogl_check_extension ("GLX_INTEL_swap_event", glx_extensions) &&
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flags & CLUTTER_FEATURE_SYNC_TO_VBLANK)
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flags |= CLUTTER_FEATURE_SWAP_EVENTS;
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#endif /* GLX_INTEL_swap_event */
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