diff --git a/sysmodules/rosalina/include/menus/screen_filters.h b/sysmodules/rosalina/include/menus/screen_filters.h
new file mode 100644
index 0000000..a720e14
--- /dev/null
+++ b/sysmodules/rosalina/include/menus/screen_filters.h
@@ -0,0 +1,37 @@
+/*
+* This file is part of Luma3DS
+* Copyright (C) 2016-2017 Aurora Wright, TuxSH
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program. If not, see .
+*
+* Additional Terms 7.b and 7.c of GPLv3 apply to this file:
+* * Requiring preservation of specified reasonable legal notices or
+* author attributions in that material or in the Appropriate Legal
+* Notices displayed by works containing it.
+* * Prohibiting misrepresentation of the origin of that material,
+* or requiring that modified versions of such material be marked in
+* reasonable ways as different from the original version.
+*/
+
+#pragma once
+
+extern Menu screenFiltersMenu;
+
+void screenFiltersSetDisabled(void);
+void screenFiltersReduceBlueLevel1(void);
+void screenFiltersReduceBlueLevel2(void);
+void screenFiltersReduceBlueLevel3(void);
+void screenFiltersReduceBlueLevel4(void);
+void screenFiltersReduceBlueLevel5(void);
+void screenFiltersSetTemperature(int temperature);
diff --git a/sysmodules/rosalina/source/menus.c b/sysmodules/rosalina/source/menus.c
index b45aeb0..6f7456f 100644
--- a/sysmodules/rosalina/source/menus.c
+++ b/sysmodules/rosalina/source/menus.c
@@ -35,19 +35,21 @@
#include "menus/debugger.h"
#include "menus/miscellaneous.h"
#include "menus/sysconfig.h"
+#include "menus/screen_filters.h"
#include "ifile.h"
#include "memory.h"
#include "fmt.h"
Menu rosalinaMenu = {
"Rosalina menu",
- .nbItems = 9,
+ .nbItems = 10,
{
{ "Process list", METHOD, .method = &RosalinaMenu_ProcessList },
{ "Take screenshot (slow!)", METHOD, .method = &RosalinaMenu_TakeScreenshot },
{ "New 3DS menu...", MENU, .menu = &N3DSMenu },
{ "Debugger options...", MENU, .menu = &debuggerMenu },
{ "System configuration...", MENU, .menu = &sysconfigMenu },
+ { "Screen filters...", MENU, .menu = &screenFiltersMenu },
{ "Miscellaneous options...", MENU, .menu = &miscellaneousMenu },
{ "Power off", METHOD, .method = &RosalinaMenu_PowerOff },
{ "Reboot", METHOD, .method = &RosalinaMenu_Reboot },
diff --git a/sysmodules/rosalina/source/menus/screen_filters.c b/sysmodules/rosalina/source/menus/screen_filters.c
new file mode 100644
index 0000000..b6b0798
--- /dev/null
+++ b/sysmodules/rosalina/source/menus/screen_filters.c
@@ -0,0 +1,144 @@
+/*
+* This file is part of Luma3DS
+* Copyright (C) 2017-2018 Sono (https://github.com/MarcuzD), panicbit
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program. If not, see .
+*
+* Additional Terms 7.b and 7.c of GPLv3 apply to this file:
+* * Requiring preservation of specified reasonable legal notices or
+* author attributions in that material or in the Appropriate Legal
+* Notices displayed by works containing it.
+* * Prohibiting misrepresentation of the origin of that material,
+* or requiring that modified versions of such material be marked in
+* reasonable ways as different from the original version.
+*/
+
+#include <3ds.h>
+#include "memory.h"
+#include "menu.h"
+#include "menus/screen_filters.h"
+#include "draw.h"
+#include "redshift/redshift.h"
+#include "redshift/colorramp.h"
+
+#define TEMP_DEFAULT NEUTRAL_TEMP
+
+void writeLut(u32* lut)
+{
+ u8 idx = 0;
+ do {
+ u32 pos = idx & 0xFF;
+
+ GPU_FB_TOP_COL_LUT_INDEX = pos;
+ GPU_FB_TOP_COL_LUT_ELEM = *lut;
+ GPU_FB_BOTTOM_COL_LUT_INDEX = pos;
+ GPU_FB_BOTTOM_COL_LUT_ELEM = *lut;
+
+ lut++;
+ } while(++idx);
+}
+
+typedef struct {
+ u8 r;
+ u8 g;
+ u8 b;
+ u8 z;
+} Pixel;
+
+void applyColorSettings(color_setting_t* cs)
+{
+ u16 c[0x600];
+ Pixel px[0x400];
+ u8 i = 0;
+
+ memset(c, 0, 0x600);
+ memset(px, 0, 0x400 * sizeof(Pixel));
+
+ do {
+ *(u32*)&px[i] = i | (i << 8) | (i << 16);
+ } while(++i);
+
+ do {
+ *(c + i + 0x000) = px[i].r | (px[i].r << 8);
+ *(c + i + 0x100) = px[i].g | (px[i].g << 8);
+ *(c + i + 0x200) = px[i].b | (px[i].b << 8);
+ } while(++i);
+
+ colorramp_fill(c + 0x000, c + 0x100, c + 0x200, 0x100, cs);
+
+ do {
+ px[i].r = *(c + i + 0x000) >> 8;
+ px[i].g = *(c + i + 0x100) >> 8;
+ px[i].b = *(c + i + 0x200) >> 8;
+ } while(++i);
+
+ writeLut((u32*)px);
+}
+
+Menu screenFiltersMenu = {
+ "Screen filters menu",
+ .nbItems = 6,
+ {
+ { "Disable", METHOD, .method = &screenFiltersSetDisabled },
+ { "Reduce blue light (level 1)", METHOD, .method = &screenFiltersReduceBlueLevel1 },
+ { "Reduce blue light (level 2)", METHOD, .method = &screenFiltersReduceBlueLevel2 },
+ { "Reduce blue light (level 3)", METHOD, .method = &screenFiltersReduceBlueLevel3 },
+ { "Reduce blue light (level 4)", METHOD, .method = &screenFiltersReduceBlueLevel4 },
+ { "Reduce blue light (level 5)", METHOD, .method = &screenFiltersReduceBlueLevel5 },
+ }
+};
+
+void screenFiltersSetDisabled(void)
+{
+ screenFiltersSetTemperature(TEMP_DEFAULT);
+}
+
+void screenFiltersReduceBlueLevel1(void)
+{
+ screenFiltersSetTemperature(4300);
+}
+
+void screenFiltersReduceBlueLevel2(void)
+{
+ screenFiltersSetTemperature(3200);
+}
+
+void screenFiltersReduceBlueLevel3(void)
+{
+ screenFiltersSetTemperature(2100);
+}
+
+void screenFiltersReduceBlueLevel4(void)
+{
+ screenFiltersSetTemperature(1550);
+}
+
+void screenFiltersReduceBlueLevel5(void)
+{
+ screenFiltersSetTemperature(1000);
+}
+
+void screenFiltersSetTemperature(int temperature)
+{
+ color_setting_t cs;
+ memset(&cs, 0, sizeof(cs));
+
+ cs.temperature = temperature;
+ cs.gamma[0] = 1.0F;
+ cs.gamma[1] = 1.0F;
+ cs.gamma[2] = 1.0F;
+ cs.brightness = 1.0F;
+
+ applyColorSettings(&cs);
+}