diff --git a/src/config.c b/src/config.c
index 07e770822..3ff802952 100644
--- a/src/config.c
+++ b/src/config.c
@@ -77,6 +77,10 @@
 #include <86box/snd_opl.h>
 #include <86box/version.h>
 
+/* Deliberate to not make the 86box.h header kitchen-sink. */
+#include <86box/qt-glsl.h>
+extern char gl3_shader_file[MAX_USER_SHADERS][512];
+
 static int   cx;
 static int   cy;
 static int   cw;
@@ -1714,6 +1718,30 @@ load_other_peripherals(void)
         ini_section_delete_var(cat, temp);
 }
 
+/* Load OpenGL 3.0 renderer options. */
+static void
+load_gl3_shaders(void)
+{
+    ini_section_t cat = ini_find_section(config, "GL3 Shaders");
+    char         *p;
+    char          temp[512];
+    int           i = 0;
+    memset(temp, 0, sizeof(temp));
+    memset(gl3_shader_file, 0, sizeof(gl3_shader_file));
+
+    for (int i = 0; i < MAX_USER_SHADERS; i++) {
+        temp[0] = 0;
+        snprintf(temp, 512, "shader%d", i);
+        p = ini_section_get_string(cat, temp, "");
+        if (p[0]) {
+            strncpy(gl3_shader_file[i], p, 512);
+        } else {
+            gl3_shader_file[i][0] = 0;
+            break;
+        }
+    }
+}
+
 /* Load the specified or a default configuration file. */
 void
 config_load(void)
@@ -1810,6 +1838,7 @@ config_load(void)
         load_floppy_and_cdrom_drives(); /* Floppy and CD-ROM drives */
         load_other_removable_devices(); /* Other removable devices */
         load_other_peripherals();       /* Other peripherals */
+        load_gl3_shaders();             /* GL3 Shaders */
 
         /* Migrate renamed device configurations. */
         c = ini_find_section(config, "MDA");
@@ -2632,6 +2661,34 @@ save_other_peripherals(void)
     ini_delete_section_if_empty(config, cat);
 }
 
+/* Save "GL3 Shaders" section. */
+static void
+save_gl3_shaders(void)
+{
+    ini_section_t cat = ini_find_or_create_section(config, "GL3 Shaders");
+    char          temp[512];
+    int shaders = 0, i = 0;
+
+    for (i = 0; i < MAX_USER_SHADERS; i++) {
+        if (gl3_shader_file[i][0] == 0)
+            break;
+        shaders++;
+    }
+
+    ini_section_set_int(cat, "shaders", shaders);
+    if (shaders == 0) {
+        ini_section_delete_var(cat, "shaders");
+    } else {
+        for (i = 0; i < shaders; i++) {
+            temp[0] = 0;
+            snprintf(temp, 512, "shader%d");
+            ini_section_set_string(cat, temp, gl3_shader_file[i]);
+        }
+    }
+
+    ini_delete_section_if_empty(config, cat);
+}
+
 /* Save "Hard Disks" section. */
 static void
 save_hard_disks(void)
@@ -2987,6 +3044,7 @@ config_save(void)
     save_floppy_and_cdrom_drives(); /* Floppy and CD-ROM drives */
     save_other_removable_devices(); /* Other removable devices */
     save_other_peripherals();       /* Other peripherals */
+    save_gl3_shaders();             /* GL3 Shaders */
 
     ini_write(config, cfg_path);
 }
diff --git a/src/include/86box/ini.h b/src/include/86box/ini.h
index 2a73a18b0..2ce89f788 100644
--- a/src/include/86box/ini.h
+++ b/src/include/86box/ini.h
@@ -91,13 +91,16 @@ extern ini_section_t ini_find_or_create_section(ini_t ini, const char *name);
 extern void          ini_rename_section(ini_section_t section, const char *name);
 extern void          ini_delete_section_if_empty(ini_t ini, ini_section_t section);
 
-static inline void *wx_config_load(const char *path) { return (void*) ini_read(path); };
+static inline void *wx_config_load(const char *path) { return (void*) ini_read(path); }
 static inline int wx_config_get_string(void *config, const char *name, char *dst, int size, const char *defVal) {
     int res = ini_has_entry(ini_find_or_create_section((ini_t)config, ""), name);
     char* str = ini_get_string((ini_t)config, "", name, (char*)defVal);
     if (size == 0)
         return res;
-    strncpy(dst, str, size);
+    if (str != NULL)
+        strncpy(dst, str, size - 1);
+    else
+        dst[0] = 0;
     return res;
 }
 static inline int wx_config_get_int(void *config, const char *name, int *dst, int defVal) {
diff --git a/src/include/86box/qt-glslp-parser.h b/src/include/86box/qt-glslp-parser.h
index cf2ac464a..853e50e66 100644
--- a/src/include/86box/qt-glslp-parser.h
+++ b/src/include/86box/qt-glslp-parser.h
@@ -53,4 +53,7 @@ void get_glslp_name(const char *f, char *s, int size);
 glslp_t *glslp_parse(const char *f);
 void glslp_free(glslp_t *p);
 
-#endif /* SRC_WX_GLSLP_PARSER_H_ */
\ No newline at end of file
+void glslp_read_shader_config(glslp_t *shader);
+void glslp_write_shader_config(glslp_t *shader);
+
+#endif /* SRC_WX_GLSLP_PARSER_H_ */
diff --git a/src/qt/CMakeLists.txt b/src/qt/CMakeLists.txt
index fd82b9053..8a06cbe5a 100644
--- a/src/qt/CMakeLists.txt
+++ b/src/qt/CMakeLists.txt
@@ -193,6 +193,10 @@ add_library(ui STATIC
 
     ../qt_resources.qrc
     ./qdarkstyle/dark/darkstyle.qrc
+
+    qt_openglshadermanagerdialog.hpp
+    qt_openglshadermanagerdialog.cpp
+    qt_openglshadermanagerdialog.ui
 )
 
 if(RTMIDI)
diff --git a/src/qt/qt_glsl_parser.cpp b/src/qt/qt_glsl_parser.cpp
index 7cf032a52..b1a96a312 100644
--- a/src/qt/qt_glsl_parser.cpp
+++ b/src/qt/qt_glsl_parser.cpp
@@ -7,8 +7,12 @@ extern "C"
 {
 #include <86box/86box.h>
 #include <86box/ini.h>
+#include <86box/config.h>
 #include <86box/qt-glslp-parser.h>
 #include <86box/path.h>
+
+extern void startblit();
+extern void endblit();
 }
 
 #define safe_strncpy(a, b, n)                                                                                                    \
@@ -305,4 +309,29 @@ void glslp_free(glslp_t *p) {
         free(p);
 }
 
-}
\ No newline at end of file
+void glslp_read_shader_config(glslp_t *shader) {
+    char s[512];
+    int i;
+    char *name = shader->name;
+    sprintf(s, "GL3 Shaders - %s", name);
+    for (i = 0; i < shader->num_parameters; ++i) {
+        struct parameter *param = &shader->parameters[i];
+        param->value = config_get_double(s, param->id, param->default_value);
+    }
+}
+
+void glslp_write_shader_config(glslp_t *shader) {
+    char s[512];
+    int i;
+    char *name = shader->name;
+
+    startblit();
+    sprintf(s, "GL3 Shaders - %s", name);
+    for (i = 0; i < shader->num_parameters; ++i) {
+        struct parameter *param = &shader->parameters[i];
+        config_set_double(s, param->id, param->value);
+    }
+    endblit();
+}
+
+}
diff --git a/src/qt/qt_mainwindow.cpp b/src/qt/qt_mainwindow.cpp
index 4c1738e63..60e0494fc 100644
--- a/src/qt/qt_mainwindow.cpp
+++ b/src/qt/qt_mainwindow.cpp
@@ -1987,7 +1987,16 @@ MainWindow::on_actionRenderer_options_triggered()
 {
     if (const auto dlg = ui->stackedWidget->getOptions(this)) {
         if (dlg->exec() == QDialog::Accepted) {
-            for (int i = 1; i < MONITORS_NUM; i++) {
+            if (ui->stackedWidget->reloadRendererOption()) {
+                ui->stackedWidget->switchRenderer(static_cast<RendererStack::Renderer>(vid_api));
+                if (show_second_monitors) {
+                    for (int i = 1; i < MONITORS_NUM; i++) {
+                        if (renderers[i] && renderers[i]->reloadRendererOption() && renderers[i]->hasOptions()) {
+                            ui->stackedWidget->switchRenderer(static_cast<RendererStack::Renderer>(vid_api));
+                        }
+                    }
+                }
+            } else for (int i = 1; i < MONITORS_NUM; i++) {
                 if (renderers[i] && renderers[i]->hasOptions())
                     renderers[i]->reloadOptions();
             }
diff --git a/src/qt/qt_openglrenderer_pcem.cpp b/src/qt/qt_openglrenderer_pcem.cpp
index 8b2a25663..17f4299d7 100644
--- a/src/qt/qt_openglrenderer_pcem.cpp
+++ b/src/qt/qt_openglrenderer_pcem.cpp
@@ -20,6 +20,7 @@
 #include <cmath>
 
 #include "qt_openglrenderer_pcem.hpp"
+#include "qt_openglshadermanagerdialog.hpp"
 
 extern "C" {
 #include <86box/86box.h>
@@ -1286,6 +1287,12 @@ OpenGLRendererPCem::event(QEvent *event)
     return res;
 }
 
+QDialog*
+OpenGLRendererPCem::getOptions(QWidget *parent)
+{
+    return new OpenGLShaderManagerDialog(parent);
+}
+
 void
 OpenGLRendererPCem::render()
 {
@@ -1659,4 +1666,4 @@ OpenGLRendererPCem::render()
 
     frameCounter++;
     context->swapBuffers(this);
-}
\ No newline at end of file
+}
diff --git a/src/qt/qt_openglrenderer_pcem.hpp b/src/qt/qt_openglrenderer_pcem.hpp
index 88844bb02..706a744fa 100644
--- a/src/qt/qt_openglrenderer_pcem.hpp
+++ b/src/qt/qt_openglrenderer_pcem.hpp
@@ -67,9 +67,9 @@ public:
     std::vector<std::tuple<uint8_t *, std::atomic_flag *>> getBuffers() override;
 
     void     finalize() override final;
-    //bool     hasOptions() const override { return true; }
-    //QDialog *getOptions(QWidget *parent) override;
-    //void     reloadOptions() override;
+    bool     hasOptions() const override { return true; }
+    QDialog *getOptions(QWidget *parent) override;
+    bool     reloadRendererOption() { return true; }
 
 signals:
     void initialized();
diff --git a/src/qt/qt_openglshadermanagerdialog.cpp b/src/qt/qt_openglshadermanagerdialog.cpp
new file mode 100644
index 000000000..26f206a0e
--- /dev/null
+++ b/src/qt/qt_openglshadermanagerdialog.cpp
@@ -0,0 +1,159 @@
+#include "qt_openglshadermanagerdialog.hpp"
+#include "ui_qt_openglshadermanagerdialog.h"
+
+#include <QListWidgetItem>
+#include <QFileDialog>
+#include <QMessageBox>
+
+extern "C" {
+#include <86box/86box.h>
+#include <86box/plat.h>
+#include <86box/video.h>
+#include <86box/path.h>
+#include <86box/ini.h>
+#include <86box/config.h>
+#include <86box/qt-glslp-parser.h>
+
+extern char gl3_shader_file[MAX_USER_SHADERS][512];
+}
+
+OpenGLShaderManagerDialog::OpenGLShaderManagerDialog(QWidget *parent)
+    : QDialog(parent)
+    , ui(new Ui::OpenGLShaderManagerDialog)
+{
+    ui->setupUi(this);
+
+    for (int i = 0; i < MAX_USER_SHADERS; i++) {
+        if (gl3_shader_file[i][0] != 0) {
+            char* filename = path_get_filename(gl3_shader_file[i]);
+            if (filename[0] != 0) {
+                glslp_t* shaderfile = glslp_parse(gl3_shader_file[i]);
+                if (shaderfile) {
+                    QListWidgetItem* item = new QListWidgetItem(ui->shaderListWidget);
+                    item->setText(filename);
+                    item->setData(Qt::UserRole + 1, QString(gl3_shader_file[i]));
+                    item->setData(Qt::UserRole + 2, (uintptr_t)shaderfile);
+                }
+            }
+        }
+    }
+    if (ui->shaderListWidget->count()) {
+        ui->shaderListWidget->setCurrentRow(ui->shaderListWidget->count() - 1);
+    } else {
+        ui->buttonRemove->setDisabled(true);
+        ui->buttonMoveUp->setDisabled(true);
+        ui->buttonMoveDown->setDisabled(true);
+    }
+}
+
+OpenGLShaderManagerDialog::~OpenGLShaderManagerDialog()
+{
+    for (int i = 0; i < ui->shaderListWidget->count(); i++) {
+        if (ui->shaderListWidget->item(i) && ui->shaderListWidget->item(i)->data(Qt::UserRole + 2).toULongLong()) {
+            glslp_free((glslp_t*)ui->shaderListWidget->item(i)->data(Qt::UserRole + 2).toULongLong());
+        }
+    }
+    delete ui;
+}
+
+void OpenGLShaderManagerDialog::on_buttonBox_clicked(QAbstractButton *button)
+{
+    if (ui->buttonBox->buttonRole(button) == QDialogButtonBox::AcceptRole) {
+        accept();
+    } else if (ui->buttonBox->buttonRole(button) == QDialogButtonBox::RejectRole) {
+        reject();
+    }
+}
+
+
+void OpenGLShaderManagerDialog::on_buttonMoveUp_clicked()
+{
+    if (ui->shaderListWidget->currentRow() == 0)
+        return;
+
+    int row = ui->shaderListWidget->currentRow();
+    auto item = ui->shaderListWidget->takeItem(row);
+    ui->shaderListWidget->insertItem(row - 1, item);
+    ui->shaderListWidget->setCurrentItem(item);
+}
+
+
+void OpenGLShaderManagerDialog::on_shaderListWidget_currentItemChanged(QListWidgetItem *current, QListWidgetItem *previous)
+{
+    if (current == nullptr) {
+        ui->buttonRemove->setDisabled(true);
+        ui->buttonMoveUp->setDisabled(true);
+        ui->buttonMoveDown->setDisabled(true);
+        return;
+    } else {
+        ui->buttonRemove->setDisabled(false);
+    }
+    ui->buttonMoveUp->setDisabled(ui->shaderListWidget->currentRow() == 0);
+    ui->buttonMoveDown->setDisabled(ui->shaderListWidget->currentRow() == (ui->shaderListWidget->count() - 1));
+}
+
+
+void OpenGLShaderManagerDialog::on_shaderListWidget_currentRowChanged(int currentRow)
+{
+    ui->buttonMoveUp->setDisabled(ui->shaderListWidget->currentRow() == 0);
+    ui->buttonMoveDown->setDisabled(ui->shaderListWidget->currentRow() == (ui->shaderListWidget->count() - 1));
+}
+
+
+void OpenGLShaderManagerDialog::on_buttonMoveDown_clicked()
+{
+    if (ui->shaderListWidget->currentRow() == (ui->shaderListWidget->count() - 1))
+        return;
+
+    int row = ui->shaderListWidget->currentRow();
+    auto item = ui->shaderListWidget->takeItem(row);
+    ui->shaderListWidget->insertItem(row + 1, item);
+    ui->shaderListWidget->setCurrentItem(item);
+}
+
+
+void OpenGLShaderManagerDialog::on_buttonAdd_clicked()
+{
+    auto res = QFileDialog::getOpenFileName(this, QString(), QString(), "GLSL Shaders (*.glslp *.glsl);;All files (*.*)");
+    if (!res.isEmpty()) {
+        auto glslp_file = res.toUtf8();
+        glslp_t* shaderfile = glslp_parse(glslp_file.data());
+        if (shaderfile) {
+            auto filename = path_get_filename(glslp_file.data());
+            QListWidgetItem* item = new QListWidgetItem(ui->shaderListWidget);
+            item->setText(filename);
+            item->setData(Qt::UserRole + 1, res);
+            item->setData(Qt::UserRole + 2, (uintptr_t)shaderfile);
+            if (ui->shaderListWidget->count()) {
+                ui->shaderListWidget->setCurrentRow(ui->shaderListWidget->count() - 1);
+            }
+        } else {
+            QMessageBox::critical(this, tr("GLSL error"), tr("Could not load filename %1").arg(res));
+        }
+    }
+}
+
+
+void OpenGLShaderManagerDialog::on_buttonRemove_clicked()
+{
+    if (ui->shaderListWidget->currentItem()) {
+        auto item = ui->shaderListWidget->takeItem(ui->shaderListWidget->currentRow());
+
+        if (item->data(Qt::UserRole + 2).toULongLong()) {
+            glslp_free((glslp_t*)item->data(Qt::UserRole + 2).toULongLong());
+        }
+        delete item;
+    }
+}
+
+void OpenGLShaderManagerDialog::on_OpenGLShaderManagerDialog_accepted()
+{
+    memset(gl3_shader_file, 0, sizeof(gl3_shader_file));
+    for (int i = 0; i < ui->shaderListWidget->count(); i++) {
+        strncpy(gl3_shader_file[i], ui->shaderListWidget->item(i)->data(Qt::UserRole + 1).toString().toUtf8(), 512);
+    }
+    startblit();
+    config_save();
+    endblit();
+}
+
diff --git a/src/qt/qt_openglshadermanagerdialog.hpp b/src/qt/qt_openglshadermanagerdialog.hpp
new file mode 100644
index 000000000..bac0205cf
--- /dev/null
+++ b/src/qt/qt_openglshadermanagerdialog.hpp
@@ -0,0 +1,40 @@
+#ifndef QT_OPENGLSHADERMANAGERDIALOG_H
+#define QT_OPENGLSHADERMANAGERDIALOG_H
+
+#include <QDialog>
+#include <QAbstractButton>
+#include <QListWidgetItem>
+
+namespace Ui {
+class OpenGLShaderManagerDialog;
+}
+
+class OpenGLShaderManagerDialog : public QDialog {
+    Q_OBJECT
+
+public:
+    explicit OpenGLShaderManagerDialog(QWidget *parent = nullptr);
+    ~OpenGLShaderManagerDialog();
+
+private slots:
+    void on_buttonBox_clicked(QAbstractButton *button);
+
+    void on_buttonMoveUp_clicked();
+
+    void on_shaderListWidget_currentItemChanged(QListWidgetItem *current, QListWidgetItem *previous);
+
+    void on_shaderListWidget_currentRowChanged(int currentRow);
+
+    void on_buttonMoveDown_clicked();
+
+    void on_buttonAdd_clicked();
+
+    void on_buttonRemove_clicked();
+
+    void on_OpenGLShaderManagerDialog_accepted();
+
+private:
+    Ui::OpenGLShaderManagerDialog *ui;
+};
+
+#endif // QT_OPENGLSHADERMANAGERDIALOG_H
diff --git a/src/qt/qt_openglshadermanagerdialog.ui b/src/qt/qt_openglshadermanagerdialog.ui
new file mode 100644
index 000000000..2888e106f
--- /dev/null
+++ b/src/qt/qt_openglshadermanagerdialog.ui
@@ -0,0 +1,148 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>OpenGLShaderManagerDialog</class>
+ <widget class="QDialog" name="OpenGLShaderManagerDialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>400</width>
+    <height>465</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Dialog</string>
+  </property>
+  <layout class="QHBoxLayout" name="horizontalLayout">
+   <property name="sizeConstraint">
+    <enum>QLayout::SizeConstraint::SetFixedSize</enum>
+   </property>
+   <item>
+    <widget class="QListWidget" name="shaderListWidget">
+     <property name="dragDropMode">
+      <enum>QAbstractItemView::DragDropMode::InternalMove</enum>
+     </property>
+     <property name="selectionBehavior">
+      <enum>QAbstractItemView::SelectionBehavior::SelectItems</enum>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <layout class="QVBoxLayout" name="verticalLayout">
+     <item>
+      <widget class="QPushButton" name="buttonAdd">
+       <property name="text">
+        <string>Add</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="buttonRemove">
+       <property name="text">
+        <string>Remove</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <spacer name="verticalSpacer">
+       <property name="orientation">
+        <enum>Qt::Orientation::Vertical</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>20</width>
+         <height>40</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
+     <item>
+      <widget class="QPushButton" name="buttonConfigure">
+       <property name="enabled">
+        <bool>false</bool>
+       </property>
+       <property name="text">
+        <string>Configure</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="buttonMoveUp">
+       <property name="text">
+        <string>Move up</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="buttonMoveDown">
+       <property name="text">
+        <string>Move down</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <spacer name="verticalSpacer_2">
+       <property name="orientation">
+        <enum>Qt::Orientation::Vertical</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>20</width>
+         <height>40</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
+     <item>
+      <widget class="QDialogButtonBox" name="buttonBox">
+       <property name="orientation">
+        <enum>Qt::Orientation::Vertical</enum>
+       </property>
+       <property name="standardButtons">
+        <set>QDialogButtonBox::StandardButton::Cancel|QDialogButtonBox::StandardButton::Ok</set>
+       </property>
+       <property name="centerButtons">
+        <bool>false</bool>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>OpenGLShaderManagerDialog</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>248</x>
+     <y>254</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>OpenGLShaderManagerDialog</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>316</x>
+     <y>260</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>
diff --git a/src/qt/qt_renderercommon.hpp b/src/qt/qt_renderercommon.hpp
index af72474c7..f3f5d2223 100644
--- a/src/qt/qt_renderercommon.hpp
+++ b/src/qt/qt_renderercommon.hpp
@@ -34,6 +34,8 @@ public:
     virtual QDialog *getOptions(QWidget *parent) { return nullptr; }
     /* Reloads options of renderer */
     virtual void reloadOptions() { }
+    /* Make the renderer reload itself */
+    virtual bool reloadRendererOption() { return false; }
 
     int      r_monitor_index = 0;
 
diff --git a/src/qt/qt_rendererstack.hpp b/src/qt/qt_rendererstack.hpp
index 8059d59c5..32ed5f7ca 100644
--- a/src/qt/qt_rendererstack.hpp
+++ b/src/qt/qt_rendererstack.hpp
@@ -70,6 +70,8 @@ public:
     void reloadOptions() const { return rendererWindow->reloadOptions(); }
     /* Returns options dialog for current renderer */
     QDialog *getOptions(QWidget *parent) { return rendererWindow ? rendererWindow->getOptions(parent) : nullptr; }
+    /* Reload the renderer itself */
+    bool reloadRendererOption() { return rendererWindow ? rendererWindow->reloadRendererOption() : false; }
 
     void setFocusRenderer();
     void onResize(int width, int height);