diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..6c51445
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,14 @@
+PREFIX := /usr
+INSTALLDIR := $(PREFIX)/share/libretro/shaders/shaders_slang
+
+all:
+	@echo "Nothing to make for slang-shaders."
+
+install:
+	mkdir -p $(DESTDIR)$(INSTALLDIR)
+	cp -ar -t $(DESTDIR)$(INSTALLDIR) *
+	rm -f $(DESTDIR)$(INSTALLDIR)/Makefile \
+		$(DESTDIR)$(INSTALLDIR)/configure
+
+test-install: all
+	DESTDIR=/tmp/build $(MAKE) install
diff --git a/configure b/configure
new file mode 100755
index 0000000..ee687aa
--- /dev/null
+++ b/configure
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+PACKAGE_NAME=slang-shaders
diff --git a/xbr/shaders/super-xbr/super-xbr-pass1.slang b/xbr/shaders/super-xbr/super-xbr-pass1.slang
index 2648721..820069b 100644
--- a/xbr/shaders/super-xbr/super-xbr-pass1.slang
+++ b/xbr/shaders/super-xbr/super-xbr-pass1.slang
@@ -45,7 +45,7 @@ layout(std140, set = 0, binding = 0) uniform UBO
 
 #define mul(a,b) (b*a)
 
-#define wp1  8.0
+#define wp1  1.0
 #define wp2  0.0
 #define wp3  0.0
 #define wp4  0.0
@@ -189,4 +189,4 @@ void main()
 	
 	FragColor = vec4(color, 1.0);
 	}
-}
\ No newline at end of file
+}
diff --git a/xbr/shaders/super-xbr/super-xbr-pass2.slang b/xbr/shaders/super-xbr/super-xbr-pass2.slang
index c7834e1..92a795f 100644
--- a/xbr/shaders/super-xbr/super-xbr-pass2.slang
+++ b/xbr/shaders/super-xbr/super-xbr-pass2.slang
@@ -48,8 +48,8 @@ layout(std140, set = 0, binding = 0) uniform UBO
 #define wp1  1.0
 #define wp2  0.0
 #define wp3  0.0
-#define wp4  2.0
-#define wp5 -2.0
+#define wp4  0.0
+#define wp5  0.0
 #define wp6  0.0
 
 #define weight1 (XBR_WEIGHT*1.29633/10.0)
@@ -201,4 +201,4 @@ void main()
 	color = clamp(color, min_sample, max_sample);
 	
    FragColor = vec4(color, 1.0);
-}
\ No newline at end of file
+}