1 files changed, 21 insertions, 15 deletions

diff --git a/raveos-gnome-theme/theme-data/extensions/installed/blur-my-shell@aunetx/effects/downscale.glsl b/raveos-gnome-theme/theme-data/extensions/installed/blur-my-shell@aunetx/effects/downscale.glsl
index 9871268..8b57367 100644
--- a/raveos-gnome-theme/theme-data/extensions/installed/blur-my-shell@aunetx/effects/downscale.glsl
+++ b/raveos-gnome-theme/theme-data/extensions/installed/blur-my-shell@aunetx/effects/downscale.glsl
@@ -3,13 +3,14 @@ uniform int divider;
 uniform float width;
 uniform float height;
 uniform int downsampling_mode;
+uniform float opacity_factor;
 
 #define CORRECTION 2.25
-#define SIZE_ADDITION 3
+#define SIZE_ADDITION 3.0
 
 vec4 get_texture_at_position(vec2 position) {
     vec2 raw_position = position + vec2(CORRECTION, CORRECTION);
-    vec2 raw_uv = raw_position / vec2(width + SIZE_ADDITION, height + SIZE_ADDITION);
+    vec2 raw_uv = raw_position / vec2(max(1.0, width + SIZE_ADDITION), max(1.0, height + SIZE_ADDITION));
 
     return texture2D(tex, raw_uv);
 }
@@ -21,11 +22,14 @@ vec2 get_corrected_position() {
 }
 
 void main() {
+    vec4 source_color = texture2D(tex, cogl_tex_coord0_in.st);
+    vec4 effect_color = vec4(0.0);
     ivec2 corrected_position = ivec2(get_corrected_position());
-    vec2 multiplied_position = corrected_position * divider;
+    vec2 multiplied_position = vec2(corrected_position) * float(divider);
 
     if (any(greaterThan(multiplied_position, vec2(width, height)))) {
-        discard;
+        cogl_color_out = mix(source_color, effect_color, opacity_factor);
+        return;
     }
 
     // mode 0: boxcar downsampling
@@ -35,15 +39,15 @@ void main() {
         int count = 0;
         for (int i = 0; i < divider; i++) {
             for (int j = 0; j < divider; j++) {
-                vec2 lookup_position = multiplied_position + vec2(i, j);
-                if (all(greaterThanEqual(lookup_position, vec2(0, 0))) &&
+                vec2 lookup_position = multiplied_position + vec2(float(i), float(j));
+                if (all(greaterThanEqual(lookup_position, vec2(0.0, 0.0))) &&
                     all(lessThan(lookup_position, vec2(width, height)))) {
                     color += get_texture_at_position(lookup_position);
                     count += 1;
                 }
             }
         }
-        cogl_color_out = color / count;
+        effect_color = color / max(1.0, float(count));
 
     } else
     // mode 1: triangular downsampling
@@ -54,23 +58,25 @@ void main() {
         int force = 1;
         for (int i = 0; i < divider; i++) {
             for (int j = 0; j < divider; j++) {
-                vec2 lookup_position = multiplied_position + vec2(i, j);
-                if (all(greaterThanEqual(lookup_position, vec2(0, 0))) &&
+                vec2 lookup_position = multiplied_position + vec2(float(i), float(j));
+                if (all(greaterThanEqual(lookup_position, vec2(0.0, 0.0))) &&
                     all(lessThan(lookup_position, vec2(width, height)))) {
-                    force = 1 + divider - int(abs(divider - i - j));
-                    color += get_texture_at_position(lookup_position) * force;
+                    force = 1 + divider - int(abs(float(divider - i - j)));
+                    color += get_texture_at_position(lookup_position) * float(force);
                     count += force;
                 }
             }
         }
-        cogl_color_out = color / count;
+        effect_color = color / max(1.0, float(count));
 
     } else
     // mode 2: Dirac downsampling
     if (downsampling_mode == 2) {
 
-        vec2 lookup_position = min(multiplied_position + vec2(divider, divider) / 2, vec2(width - 1, height - 1));
-        cogl_color_out = get_texture_at_position(lookup_position);
+        vec2 lookup_position = min(multiplied_position + vec2(float(divider)) * 0.5, vec2(width - 1.0, height - 1.0));
+        effect_color = get_texture_at_position(lookup_position);
 
     }
-}
\ No newline at end of file
+
+    cogl_color_out = mix(source_color, effect_color, opacity_factor);
+}