enable hidpi

linux-hidpi/glava/wave/2.frag

@@ -0,0 +1,33 @@
+
+layout(pixel_center_integer) in vec4 gl_FragCoord;
+
+#request uniform "prev" tex
+uniform sampler2D tex;    /* screen texture    */
+#request uniform "screen" screen
+uniform ivec2     screen; /* screen dimensions */
+
+out vec4 fragment; /* output */
+
+#include "@wave.glsl"
+#include ":wave.glsl"
+
+void main() {
+    fragment = texelFetch(tex, ivec2(gl_FragCoord.x, gl_FragCoord.y), 0);
+    
+    vec4
+        a0 = texelFetch(tex, ivec2((gl_FragCoord.x + 1), (gl_FragCoord.y + 0)), 0),
+        a1 = texelFetch(tex, ivec2((gl_FragCoord.x + 1), (gl_FragCoord.y + 1)), 0),
+        a2 = texelFetch(tex, ivec2((gl_FragCoord.x + 0), (gl_FragCoord.y + 1)), 0),
+        a3 = texelFetch(tex, ivec2((gl_FragCoord.x + 1), (gl_FragCoord.y + 0)), 0),
+    
+        a4 = texelFetch(tex, ivec2((gl_FragCoord.x - 1), (gl_FragCoord.y - 0)), 0),
+        a5 = texelFetch(tex, ivec2((gl_FragCoord.x - 1), (gl_FragCoord.y - 1)), 0),
+        a6 = texelFetch(tex, ivec2((gl_FragCoord.x - 0), (gl_FragCoord.y - 1)), 0),
+        a7 = texelFetch(tex, ivec2((gl_FragCoord.x - 1), (gl_FragCoord.y - 0)), 0);
+
+    vec4 avg = (a0 + a1 + a2 + a3 + a4 + a5 + a6 + a7) / 8.0;
+    if (avg.a > 0){
+        if (fragment.a <= 0 || gl_FragCoord.x == 0 || gl_FragCoord.x == screen.x - 1)
+            fragment = OUTLINE;
+    }
+}