enable hidpi

linux-hidpi/glava/graph/2.frag

@@ -0,0 +1,44 @@
+
+in vec4 gl_FragCoord;
+
+#request uniform "prev" tex
+uniform sampler2D tex;    /* screen texture    */
+
+out vec4 fragment; /* output */
+
+#include "@graph.glsl"
+#include ":graph.glsl"
+
+#if DRAW_OUTLINE == 0 && DRAW_HIGHLIGHT == 0
+#error __disablestage
+#endif
+
+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) {
+            /* outline */
+            #if DRAW_OUTLINE > 0
+            fragment = OUTLINE;
+            #endif
+        } else if (avg.a < 1) {
+            /* creates a highlight along the edge of the spectrum */
+            #if DRAW_HIGHLIGHT > 0
+            fragment.rgb *= avg.a * 2;
+            #endif
+        }
+    }
+}