1 files changed, 18 insertions, 10 deletions

diff --git a/quantum/rgblight.c b/quantum/rgblight.c
index 3042ff11e..08515564b 100644
--- a/quantum/rgblight.c
+++ b/quantum/rgblight.c
@@ -66,6 +66,15 @@ bool is_rgblight_initialized = false;
 LED_TYPE led[RGBLED_NUM];
 bool rgblight_timer_enabled = false;
 
+static uint8_t clipping_start_pos = 0;
+static uint8_t clipping_num_leds = RGBLED_NUM;
+
+void rgblight_set_clipping_range(uint8_t start_pos, uint8_t num_leds) {
+  clipping_start_pos = start_pos;
+  clipping_num_leds = num_leds;
+}
+
+
 void sethsv(uint16_t hue, uint8_t sat, uint8_t val, LED_TYPE *led1) {
   uint8_t r = 0, g = 0, b = 0, base, color;
 
@@ -621,7 +630,7 @@ void rgblight_sethsv_at(uint16_t hue, uint8_t sat, uint8_t val, uint8_t index) {
   || defined(RGBLIGHT_EFFECT_SNAKE) || defined(RGBLIGHT_EFFECT_KNIGHT)
 
 static uint8_t get_interval_time(const uint8_t* default_interval_address, uint8_t velocikey_min, uint8_t velocikey_max) {
-  return 
+  return
 #ifdef VELOCIKEY_ENABLE
     velocikey_enabled() ? velocikey_match_speed(velocikey_min, velocikey_max) :
 #endif
@@ -668,21 +677,20 @@ void rgblight_sethsv_slave(uint16_t hue, uint8_t sat, uint8_t val) {
 
 #ifndef RGBLIGHT_CUSTOM_DRIVER
 void rgblight_set(void) {
+  LED_TYPE *start_led = led + clipping_start_pos;
+  uint16_t num_leds = clipping_num_leds;
   if (rgblight_config.enable) {
-      LED_TYPE *ledp;
     #ifdef RGBLIGHT_LED_MAP
       LED_TYPE led0[RGBLED_NUM];
       for(uint8_t i = 0; i < RGBLED_NUM; i++) {
           led0[i] = led[pgm_read_byte(&led_map[i])];
       }
-      ledp = led0;
-    #else
-      ledp = led;
+      start_led = led0 + clipping_start_pos;
     #endif
     #ifdef RGBW
-      ws2812_setleds_rgbw(ledp, RGBLED_NUM);
+      ws2812_setleds_rgbw(start_led, num_leds);
     #else
-      ws2812_setleds(ledp, RGBLED_NUM);
+      ws2812_setleds(start_led, num_leds);
     #endif
   } else {
     for (uint8_t i = 0; i < RGBLED_NUM; i++) {
@@ -691,9 +699,9 @@ void rgblight_set(void) {
       led[i].b = 0;
     }
     #ifdef RGBW
-      ws2812_setleds_rgbw(led, RGBLED_NUM);
+      ws2812_setleds_rgbw(start_led, num_leds);
     #else
-      ws2812_setleds(led, RGBLED_NUM);
+      ws2812_setleds(start_led, num_leds);
     #endif
   }
 }
@@ -813,7 +821,7 @@ void rgblight_effect_breathing(uint8_t interval) {
   float val;
 
   uint8_t interval_time = get_interval_time(&RGBLED_BREATHING_INTERVALS[interval], 1, 100);
-  
+
   if (timer_elapsed(last_timer) < interval_time) {
     return;
   }