3 files changed, 54 insertions, 0 deletions
diff --git a/quantum/rgb_matrix/animations/pixel_flow_anim.h b/quantum/rgb_matrix/animations/pixel_flow_anim.h
new file mode 100644
index 0000000000..312c87628c
--- /dev/null
+++ b/quantum/rgb_matrix/animations/pixel_flow_anim.h
@@ -0,0 +1,49 @@
+// Copyright 2022 @filterpaper
+// SPDX-License-Identifier: GPL-2.0+
+
+#ifdef ENABLE_RGB_MATRIX_PIXEL_FLOW
+RGB_MATRIX_EFFECT(PIXEL_FLOW)
+#    ifdef RGB_MATRIX_CUSTOM_EFFECT_IMPLS
+
+static bool PIXEL_FLOW(effect_params_t* params) {
+    // LED state array
+    static RGB led[DRIVER_LED_TOTAL];
+
+    static uint32_t wait_timer = 0;
+    if (wait_timer > g_rgb_timer) {
+        return false;
+    }
+
+    inline uint32_t interval(void) { return 3000 / scale16by8(qadd8(rgb_matrix_config.speed, 16), 16); }
+
+    if (params->init) {
+        // Clear LEDs and fill the state array
+        rgb_matrix_set_color_all(0, 0, 0);
+        for (uint8_t j = 0; j < DRIVER_LED_TOTAL; ++j) {
+            led[j] = (random8() & 2) ? (RGB){0, 0, 0} : hsv_to_rgb((HSV){random8(), qadd8(random8() >> 1, 127), rgb_matrix_config.hsv.v});
+        }
+    }
+
+    RGB_MATRIX_USE_LIMITS(led_min, led_max);
+    // Light LEDs based on state array
+    for (uint8_t i = led_min; i < led_max; ++i) {
+        RGB_MATRIX_TEST_LED_FLAGS();
+        rgb_matrix_set_color(i, led[i].r, led[i].g, led[i].b);
+    }
+
+    if (!rgb_matrix_check_finished_leds(led_max)) {
+        // Shift LED state forward
+        for (uint8_t j = 0; j < led_max - 1; ++j) {
+            led[j] = led[j + 1];
+        }
+        // Fill last LED
+        led[led_max - 1] = (random8() & 2) ? (RGB){0, 0, 0} : hsv_to_rgb((HSV){random8(), qadd8(random8() >> 1, 127), rgb_matrix_config.hsv.v});
+        // Set pulse timer
+        wait_timer = g_rgb_timer + interval();
+    }
+
+    return rgb_matrix_check_finished_leds(led_max);
+}
+
+#    endif  // RGB_MATRIX_CUSTOM_EFFECT_IMPLS
+#endif      // ENABLE_RGB_MATRIX_PIXEL_FLOW
diff --git a/quantum/rgb_matrix/animations/pixel_fractal_anim.h b/quantum/rgb_matrix/animations/pixel_fractal_anim.h
index 8e25ec402c..35187b92de 100644
--- a/quantum/rgb_matrix/animations/pixel_fractal_anim.h
+++ b/quantum/rgb_matrix/animations/pixel_fractal_anim.h
@@ -31,6 +31,10 @@ static bool PIXEL_FRACTAL(effect_params_t* params) {
 
     inline uint32_t interval(void) { return 3000 / scale16by8(qadd8(rgb_matrix_config.speed, 16), 16); }
 
+    if (params->init) {
+        rgb_matrix_set_color_all(0, 0, 0);
+    }
+
     RGB rgb = rgb_matrix_hsv_to_rgb(rgb_matrix_config.hsv);
     for (uint8_t h = 0; h < MATRIX_ROWS; ++h) {
         for (uint8_t l = 0; l < MID_COL - 1; ++l) {  // Light and move left columns outwards
diff --git a/quantum/rgb_matrix/animations/rgb_matrix_effects.inc b/quantum/rgb_matrix/animations/rgb_matrix_effects.inc
index 27ce347235..ac7bac428d 100644
--- a/quantum/rgb_matrix/animations/rgb_matrix_effects.inc
+++ b/quantum/rgb_matrix/animations/rgb_matrix_effects.inc
@@ -27,6 +27,7 @@
 #include "hue_pendulum_anim.h"
 #include "hue_wave_anim.h"
 #include "pixel_rain_anim.h"
+#include "pixel_flow_anim.h"
 #include "pixel_fractal_anim.h"
 #include "typing_heatmap_anim.h"
 #include "digital_rain_anim.h"