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[client] added xlib-shim to disable calls to XSync
The compiled xlib-shim.so can be used to intercept and prevent SDL from calling XSync, which causes latency issues on some video hardware. To use specify the full path to the file in the LD_PRELOAD environment variable, like so: LD_PRELOAD=/full/path/xlib-shim.so ./looking-glass
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@ -26,7 +26,10 @@ OBJS = main.o \
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BUILD_OBJS = $(foreach obj,$(OBJS),$(BUILD)/$(obj))
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BUILD_OBJS = $(foreach obj,$(OBJS),$(BUILD)/$(obj))
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all: $(BIN)/$(BINARY)
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all: $(BIN)/$(BINARY) $(BIN)/xlib-shim.so
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$(BIN)/xlib-shim.so:
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gcc -fPIC $(CFLAGS) -shared -o $@ xlib-shim.c
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$(BUILD)/%.o: %.c
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$(BUILD)/%.o: %.c
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@mkdir -p $(dir $@)
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@mkdir -p $(dir $@)
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15
client/xlib-shim.c
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15
client/xlib-shim.c
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@ -0,0 +1,15 @@
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#include <X11/Xlib.h>
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#include <stdbool.h>
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#include "debug.h"
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int XSync(Display * display, Bool discard)
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{
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static bool doneInfo = false;
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if (!doneInfo)
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{
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DEBUG_INFO("XSync Override Enabled");
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doneInfo = true;
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}
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return 0;
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}
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