libopenglplugin.so file is a crucial add-on for the ePSXe PlayStation emulator on Android, enabling high-definition (HD) graphics through OpenGL. Because it is licensed under the GNU General Public License (GPL), it is not included in the standard emulator app and must be downloaded separately. Google Play Official Download Links
Depending on your device's processor architecture, you can download the plugin directly from the official ePSXe website For ARM Processors (Most common): libopenglplugin.so For Intel Atom Processors: libopenglplugin_intel.so Alternative: Google Play Store App
Alternatively, the plugin is available as a standalone app on the Google Play Store
. Installing this version is often easier for managing updates and compatibility with recent versions of the emulator (ePSXe 2.0.10 or newer). Google Play Requirements & Compatibility Emulator Version: Requires ePSXe for Android version 2.0.10 or higher Visual Enhancements:
Improves clarity and resolution, but performance varies by game. Some titles may experience slowdowns or graphical glitches when the plugin is active. Manual Placement: If downloading the file manually, it should typically be placed in the epsxe/plugins/ directory on your device's internal storage. enable the plugin within the ePSXe settings after downloading? ePSXe openGL Plugin - Apps on Google Play
I cannot directly provide download links for libopenglplugin.so or any other files. However, I can guide you on where to find it legally and safely:
For ePSXe on Android (OpenGL renderer plugin):
.so files were part of ePSXe's additional packages on their official website: epsxe.com.Important notes:
.so file you need to manually place.Recommendation:
Legal reminder: Only use ePSXe with game BIOS files you have legally dumped from your own PlayStation console and game discs you own.
How to Download and Install libopenglplugin.so for ePSXe on Android
If you are a fan of retro gaming, ePSXe for Android is likely your go-to emulator for playing classic PlayStation 1 (PSX) titles. While the emulator works great out of the box, many users want to push the graphics further. To do that, you need the High-Definition (HD) renderer, which requires a specific file: libopenglplugin.so.
In this guide, we will cover exactly how to download this plugin and set it up to get the best possible visuals on your mobile device. What is libopenglplugin.so?
The libopenglplugin.so file is a specialized library that allows ePSXe to use OpenGL for rendering graphics. By default, ePSXe uses a software renderer that aims for accuracy and compatibility. However, the OpenGL plugin unlocks:
Higher Internal Resolutions: Play games at 2x, 4x, or even higher resolutions.
Texture Filtering: Smooths out pixelated textures for a modern look.
Enhanced Lighting: Improved visual effects that weren't possible on original hardware. How to Download libopenglplugin.so for ePSXe Android To get the plugin working, follow these steps carefully: 1. Download the Plugin
The plugin is usually distributed directly by the ePSXe team or through trusted emulation community sites.
Official Source: The easiest way to get the correct version is via the ePSXe official website. Look for the "GPU Android OpenGL Plugin" link.
File Format: You will likely download a .zip or .7z file. You will need a file explorer (like ZArchiver or ES File Explorer) to extract the libopenglplugin.so file from the archive. 2. Place the File in the Correct Directory
Once you have extracted the .so file, you need to move it to a folder where the ePSXe app can find it. Open your file manager. Navigate to your internal storage. Locate the folder named epsxe.
Inside that folder, look for a subfolder named plugins. If it doesn't exist, create it.
Paste the libopenglplugin.so file into the /epsxe/plugins/ directory. How to Enable OpenGL in ePSXe Settings
Simply placing the file in the folder isn't enough; you have to tell the emulator to use it. Launch ePSXe on your Android device. Go to Preferences. Select Video Preferences. Tap on GPU Plugin.
If you placed the file correctly, you should see libopenglplugin.so in the list. Select it.
Go back to Video Preferences and ensure Video Renderer is set to OpenGL (Plugin). Troubleshooting Common Issues
Plugin Not Showing Up: Ensure the file name is exactly libopenglplugin.so. Sometimes Android adds a .txt extension if downloaded via certain browsers.
Black Screen/Crashes: Some older or budget Android devices do not support the OpenGL requirements of this plugin. If your game crashes, try lowering the "Internal Resolution" in the Video Preferences or switch back to the "Hardware" renderer.
Missing "epsxe" Folder: If you don't see the folder, run the emulator once and load a game. The app will create the necessary directory structure on your storage. Conclusion
Downloading and installing the libopenglplugin.so is the single best way to upgrade your PS1 gaming experience on Android. By following the steps above, you can transform pixelated 90s graphics into a crisp, HD experience that looks great on modern smartphone screens.
Are you having trouble with frame rate drops after installing the plugin, or
Title: A Step-by-Step Guide to Downloading libopenglplugin.so for ePSXe on Android
Introduction:
Are you an avid gamer looking to play classic PlayStation games on your Android device using the ePSXe emulator? One of the essential files required for ePSXe to function properly is the libopenglplugin.so file. In this blog post, we'll walk you through the process of downloading and installing libopenglplugin.so for ePSXe on Android.
What is ePSXe and libopenglplugin.so?
ePSXe is a popular PlayStation emulator for Android that allows users to play PS1 games on their devices. libopenglplugin.so is a plugin file required by ePSXe to render graphics using OpenGL.
Why do you need libopenglplugin.so?
Without the libopenglplugin.so file, ePSXe may not function correctly, and you may experience issues such as:
How to Download libopenglplugin.so for ePSXe on Android:
Method 1: Download from Official ePSXe Website download libopenglplugin.so epsxe android
Method 2: Download from a Third-Party Source
How to Install libopenglplugin.so on ePSXe:
Troubleshooting Tips:
Conclusion:
Downloading and installing libopenglplugin.so for ePSXe on Android is a straightforward process. By following the steps outlined in this guide, you should be able to enjoy smooth graphics and gameplay on your favorite PS1 games using ePSXe. If you encounter any issues, refer to the troubleshooting tips or seek help from the ePSXe community. Happy gaming!
The libopenglplugin.so file is a crucial library for the ePSXe for Android emulator, specifically used to enable OpenGL-based HD graphics. Because this plugin is licensed under the GNU General Public License (GPL), it cannot be legally bundled with the main emulator app on the Google Play Store. 1. Download Links
Depending on your device's processor architecture, you will need one of the two official versions:
For ARM Devices (Most common smartphones/tablets): Download libopenglplugin.so
For Intel Atom Devices (Rare older tablets): Download libopenglplugin_intel.so
Alternatively, you can install the plugin as a standalone app via the ePSXe openGL Plugin on Google Play. 2. Manual Installation Guide
If you choose to download the .so file directly rather than using the Play Store app, follow these steps:
Placement: Copy the downloaded .so file to your device's internal storage or SD card (any folder you can easily find, like /ePSXe/plugins/).
Enable the Plugin: Open ePSXe and go to Preferences > GPU Plugin. Use the file browser to select the libopenglplugin.so file you just saved.
Set Video Renderer: Navigate to Preferences > Video Renderer and choose OpenGL Plugin. 3. Key Considerations Graphics
Provides HD upscaling and sharper textures compared to the default "Soft" renderer. Performance
Can cause slowdowns or "washed out" colors on older or lower-end devices. Bugs
Known graphical glitches in specific games like Tekken (character select), Silent Hill (crashes), and Sheep Dog 'n Wolf. Requirements Requires ePSXe version 2.0.10 or newer.
Pro Tip: If a game crashes or runs poorly with the OpenGL plugin, switch back to the Hardware Renderer in Video Preferences; it is generally more stable for titles with compatibility issues. Screen and Video Configuration - ePSXe for Android
The libopenglplugin.so file is an essential add-on for the ePSXe Android emulator that enables high-definition (HD) graphics by utilizing the Peopsxgl OpenGL plugin. Download Options
You can obtain the plugin through official direct links or as a standard app from major app stores: Official Direct Links (ePSXe.com): ARM-based devices: libopenglplugin.so Intel Atom-based devices: libopenglplugin_intel.so App Stores (Easier Installation):
Google Play Store: The ePSXe openGL Plugin is available for devices running ePSXe version 2.0.10 or higher.
Third-Party Repositories: Platforms like Uptodown also host the plugin APK for manual installation. Installation & Setup Guide
To use the .so file or the installed plugin, follow these steps:
Placement: If you downloaded the .so file directly, copy it to your device's internal storage or SD card (e.g., in a folder named epsxe/plugins/). Enable the Plugin: Open the ePSXe app on your Android device. Navigate to Preferences > GPU Plugin. Select the downloaded libopenglplugin.so file. Activate OpenGL Rendering: Go to Preferences > Video Renderer. Change the setting to OpenGL Plugin.
Hardware Requirements: Ensure you are using ePSXe version 2.0.10 or newer for full compatibility. Performance Considerations
Visual Boost: This plugin allows for significantly improved 3D graphics clarity compared to standard software rendering.
Compatibility: Performance varies by game. Some titles may experience slowdowns or graphical glitches when using the OpenGL renderer.
Stability: If a game crashes or runs poorly, it is often recommended to switch back to the default Hardware Renderer, which is generally more stable.
The libopenglplugin.so file is a crucial library for the ePSXe for Android emulator, enabling high-definition (HD) graphics support through the OpenGL renderer. Because it is licensed under the GPL, it is not bundled directly with the emulator and must be downloaded and configured separately. Download Links
You can download the appropriate library file directly from the official ePSXe website based on your device's processor architecture: For ARM devices: libopenglplugin.so. For Intel Atom devices: libopenglplugin_intel.so.
Alternatively, you can install the ePSXe openGL Plugin as an app via the Google Play Store or through third-party platforms like Uptodown. Installation & Configuration To manually set up the .so file, follow these steps:
Download the file to your device's internal storage or SD card. Open ePSXe and navigate to Preferences. Go to Video Renderer and select OpenGL Plugin.
Select GPU Plugin and browse to the location where you saved the libopenglplugin.so file. Restart the emulator to apply the changes. Important Considerations
Requirements: You must be running ePSXe version 2.0.10 or newer to use this plugin effectively.
Performance: While it improves visual clarity and adds features like scanline emulation, it may cause slowdowns or graphical glitches in certain games (e.g., darkened colors or washed-out visuals).
Compatibility: This plugin is specifically designed for ePSXe; other versions of OpenGL plugins may not be compatible with this emulator.
Are you experiencing any specific performance issues or graphical bugs with a particular game after installing the plugin? Screen and Video Configuration - ePSXe for Android
If you are seeing an error regarding a missing libopenglplugin.so
file in ePSXe for Android, it is usually because the app is looking for the OpenGL Renderer Plugin to improve 3D graphics. Here is a guide on how to get it working: 1. Download the Plugin The plugin is not usually a separate libopenglplugin
file you drop into a system folder manually; it is distributed as a helper app or an internal library. Official Source:
The safest way to get the high-definition renderer is by downloading the ePSXe OpenGL Plugin directly from the Google Play Store Alternative:
If you cannot access the Play Store, reputable APK mirrors like APKPure or APKMirror often host the "ePSXe OpenGL Plugin" package. 2. How to Install and Activate Once you have the plugin installed on your Android device: Preferences Video Preferences Video Renderer OpenGL Plugin (it may also be listed as "Hardware Renderer"). 3. Why Use It? Upscaling:
It allows the emulator to render games at higher resolutions than the original PS1 hardware. Smooth Textures: It provides texture filtering to reduce pixelation. Performance:
While it looks better, it requires a more powerful device than the standard "Soft" renderer. If your games start lagging after switching, revert the setting to "Hardware" or "Software." Troubleshooting Tip
If the app still says the library is missing after installing the plugin app: Ensure both ePSXe and the Plugin are installed on the internal storage , not an SD card.
Restart the ePSXe app to allow it to scan for the newly installed library. configuring the video settings for the best balance of speed and graphics?
libopenglplugin.so file is a critical component for users of the ePSXe for Android
emulator who wish to enhance their gaming experience with HD graphics and smoother performance on modern mobile hardware. Because the plugin is GPL-licensed, it is not bundled directly within the standard emulator APK and must be downloaded and configured manually. Purpose and Functionality The primary goal of the OpenGL plugin is to provide High-Definition (HD) support
. Unlike the default "soft" renderer, which focuses on accuracy and compatibility with older hardware, the OpenGL plugin leverages the GPU of an Android device to upscale resolution and apply advanced visual effects. Enhanced Visuals
: It allows games originally designed for 240p resolution to be rendered in much higher detail. Hardware Specifics : The plugin is particularly effective on devices with Adreno GPUs
, though performance varies depending on the specific game and device power. Limitations
: Some games may experience glitches or slowdowns when using this plugin, as not all titles are fully compatible with its hardware-accelerated rendering. How to Download and Install
To use the plugin, users typically need to source the specific library file compatible with their device's architecture. Official Source : The most reliable way to obtain the file is from the official ePSXe website For ARM devices libopenglplugin.so For Intel Atom devices libopenglplugin_intel.so App Alternatives : Alternatively, a standalone installer is available as the ePSXe openGL Plugin on Google Play or through third-party repositories like Manual Placement : If downloading the
file directly, copy it to your device's internal storage (often in the Configuration Steps
Once the file is on your device, you must tell the emulator to use it: Open ePSXe and navigate to Preferences Video Renderer and choose OpenGL Plugin GPU Plugin and select the libopenglplugin.so file you downloaded.
While the OpenGL plugin offers the best visual potential, many users still prefer the Hardware Renderer
for daily play because it is "near perfect" with fewer graphical bugs. However, for those looking to push their PS1 classics into the HD era, the libopenglplugin.so remains an essential download. best settings
to fix specific graphical glitches in games like Final Fantasy or Spyro? Download ePSXe openGL Plugin 1.19.1 for Android - Uptodown 7 Feb 2024 —
The file libopenglplugin.so is the core component of the ePSXe openGL Plugin, an optional add-on for the ePSXe for Android emulator. It enables HD graphics by offloading rendering to your device's GPU, providing sharper visuals compared to the standard software renderer. How to Download and Install
While early versions of ePSXe required users to manually download the .so file and place it in specific directories, the process is now largely automated through an APK installer.
Official Google Play Method: The most reliable way is to download the ePSXe openGL Plugin from Google Play. This automatically installs the necessary library files.
Manual Download (.so file): If you prefer a manual setup, the official ePSXe site provides direct links for specific architectures: ARM devices: libopenglplugin.so Intel Atom devices: libopenglplugin_intel.so
Alternative Stores: You can also find the APK on Uptodown or RuStore. Setup Requirements
Emulator Version: You must have ePSXe for Android version 2.0.10 or newer installed. Enabling the Plugin: Install the plugin APK. Open ePSXe and go to Preferences > Video Preferences. Set the Video Renderer to "OpenGL Plugin". Under GPU Plugin, ensure the downloaded plugin is selected. Key Considerations
Performance Impact: HD support is limited. While it improves clarity, some games may experience slowdowns, graphical glitches, or crashes.
Compatibility: Some titles (e.g., Tekken, Silent Hill) are known to have visual issues with this plugin. If a game runs poorly, switching back to the "Hardware" or "Software" renderer usually resolves it.
Configuration: Once enabled, you can often access a configuration bar at the top of the screen during gameplay to adjust specific settings like scanlines or resolution. ePSXe openGL Plugin - RuStore
Title: The Shadow Architecture: Libopenglplugin.so and the Philosophy of Mobile Emulation
In the sprawling digital ecosystem of the Android operating system, the average user interacts with a polished surface layer: the Graphical User Interface (GUI), the touch-responsive buttons, and the vibrant animations of modern apps. However, beneath this veneer lies the complex, somewhat archaic machinery of the Linux kernel and shared libraries. When a user searches for "download libopenglplugin.so epsxe android," they are not merely looking for a file; they are attempting to bridge two disparate eras of computing history. They are reaching into the guts of their device to perform digital necromancy, resurrecting the spirit of the 1990s PlayStation on the glass slab of the 21st century.
To understand the significance of this specific file, one must first understand the architecture of emulation. Emulation is an act of translation—a computationally expensive process where the host device (a modern Android phone) must interpret the machine code of a foreign guest (the Sony PlayStation). The PlayStation, launched in 1994, relied on a very specific, now-ancient set of graphics protocols. The ePSXe emulator functions as the interpreter, translating these old instructions into something a modern device can understand. However, translation is rarely perfect, and this is where the .so file enters the narrative.
The Mechanics of the Plugin
In the Linux and Android file hierarchy, the extension .so stands for "Shared Object." These files are libraries containing code and data that can be used by multiple programs simultaneously. In the context of ePSXe, the libopenglplugin.so is a modular component—a specific dialect in the translation process.
The architecture of the PlayStation (PS1) was notoriously difficult to program for, relying on the Graphics Processing Unit (GPU) to handle 2D sprites and 3D polygons in ways that modern GPUs do not natively understand. Early emulators often hardcoded these graphics translations into the core software. However, the developers of emulators like ePSXe adopted a plugin system. This allowed third-party developers to write their own graphics "backends."
The libopenglplugin.so represents one of these backends, specifically one designed to leverage OpenGL (Open Graphics Library). When a user installs this file into the specific directory structure of ePSXe, they are instructing the emulator to outsource the heavy lifting of graphics rendering to the phone's dedicated graphics hardware via the OpenGL API, rather than relying on slower, software-based rendering. It is the difference between a translator reading from a script and a native speaker interpreting in real-time.
The Quest for High-Definition Nostalgia
Why do users seek this file? The default settings of many emulators often render games exactly as they were: pixelated, low-resolution, and distorted by the stretching of aspect ratios on high-definition screens. For some, this is authentic nostalgia. For others, it is a visual barrier.
Plugins like libopenglplugin.so are often sought because they promise enhancement—specifically, the ability to render polygons at higher resolutions, apply texture filtering, and smoothing out the jagged edges of the past. The file becomes a totem of enhancement. It represents the desire not just to play the games of the past, but to rescue them from the technical limitations of their era. It allows Final Fantasy VII or Castlevania: Symphony of the Night to be viewed not through the lens of a 1995 cathode-ray tube, but through the crisp clarity of a modern OLED display.
The Legal and Ethical Grey Zone
However, the search for "download libopenglplugin.so" also unveils the murky underbelly of the emulation scene. Unlike official apps distributed via the Google Play Store, these plugins often exist in a gray area of distribution. They are frequently hosted on obscure forums, GitHub repositories, or fan sites. This necessitates a user behavior that is increasingly rare in the mobile era: manual file management.
To utilize the file, the user must typically have a file explorer, navigate to the Android/data directory, and place the library in the precise folder where the emulator scans for plugins. This act requires a level of technical literacy and agency that modern
To use the libopenglplugin.so file for ePSXe on Android, you need to download and manually configure it within the emulator's settings. This plugin enables HD graphics and can significantly improve visual quality and performance in certain 3D games. Where to Download
The file is available directly from the official ePSXe site based on your device's processor: For ARM devices: libopenglplugin.so. For Intel Atom devices: libopenglplugin_intel.so.
Alternatively, you can install the plugin as a standalone app via the ePSXe openGL Plugin on Google Play or through third-party stores like Uptodown and Aptoide. How to Install and Configure
If you downloaded the .so file manually, follow these steps to activate it:
Save the file: Place the .so file on your device's internal storage or SD card.
Select the Plugin: Open ePSXe, go to Preferences > GPU Plugin, and browse to select the downloaded libopenglplugin.so.
Enable the Renderer: Go to Preferences > Video Renderer and choose OpenGL Plugin. Things to Keep in Mind Download ePSXe openGL Plugin 1.19.1 for Android - Uptodown
Report: libopenglplugin.so for ePSXe on Android
Introduction
The libopenglplugin.so file is a crucial component for running PlayStation games on Android devices using the ePSXe emulator. This report aims to provide an overview of the libopenglplugin.so file, its importance in ePSXe, and a step-by-step guide on how to download and install it on an Android device.
What is libopenglplugin.so?
libopenglplugin.so is a shared library file that provides OpenGL functionality to the ePSXe emulator. OpenGL is a cross-platform API for rendering 2D and 3D graphics. In the context of ePSXe, libopenglplugin.so enables the emulator to render PlayStation games using OpenGL, which provides better performance and compatibility.
Importance of libopenglplugin.so in ePSXe
The libopenglplugin.so file is essential for running PlayStation games on Android devices using ePSXe. Without this file, the emulator may not be able to render games correctly, leading to graphics issues, crashes, or even failure to launch.
Downloading and Installing libopenglplugin.so on Android
To download and install libopenglplugin.so on an Android device, follow these steps:
Troubleshooting
If you encounter issues with libopenglplugin.so, try the following:
Conclusion
The libopenglplugin.so file is a critical component for running PlayStation games on Android devices using ePSXe. By following the steps outlined in this report, users can successfully download and install libopenglplugin.so on their Android devices, ensuring a smooth gaming experience. If issues arise, troubleshooting steps can help resolve common problems.
libopenglplugin.so file is a vital add-on for the ePSXe for Android emulator, specifically designed to enable OpenGL-based HD graphics
. While the standard emulator provides solid performance, this plugin acts as a high-definition rendering layer that can make classic PlayStation 1 titles look significantly cleaner and more detailed on modern high-resolution screens. Core Functionality and Benefits Visual Upgrade : The primary goal is to provide OpenGL HD graphics support . It smooths out 3D models and improves overall clarity. Performance on Modern Hardware : It is particularly beneficial for devices with Adreno GPUs
, often yielding better performance than standard software rendering. Miraculous Results : On certain devices like the Retroid Pocket 2
, users have reported "miracle" performance, maintaining a steady 60 frames per second. How to Download and Install
Unlike standard plugins for PC, the Android version of ePSXe handles this slightly differently. You have two main methods for acquisition: Via the App Store : The most stable way is to download the ePSXe openGL Plugin directly from the Google Play Store Manual Installation (.so file) : You can download the libopenglplugin.so file directly from the official ePSXe website Arm Devices libopenglplugin.so Intel Atom Devices libopenglplugin_intel.so Installation Path : Copy the file to your device's SD card, then navigate to Preferences > GPU Plugin to select it. Known Compatibility Issues
While it improves visuals, the plugin is not a "one-size-fits-all" solution. It is known to have limitations: Game-Specific Glitches : Games like Silent Hill may crash immediately upon starting, and
releases often have issues on the character selection screen.
: Some titles may experience slower performance or graphical oddities when HD rendering is forced. Menu Issues Sheep Dog 'n Wolf , the in-game menu may become inaccessible. Google Play Pro Tips for Best Performance Hardware Renderer First
: If the OpenGL plugin is too buggy, many users recommend the Hardware Renderer 2x Internal GPU Resolution as a more stable alternative. Threading Mode : For optimal results, set the Plugin Threading Mode
To use the libopenglplugin.so file in ePSXe for Android, you must manually download the plugin from the official website and configure it within the emulator's video settings. This plugin enables HD graphics for 3D games, though it may cause slowdowns or glitches in some titles. 1. Download the Plugin File
Because the OpenGL plugin is GPL-licensed, it is not bundled with the main emulator. You must download the specific version for your device's architecture: For ARM devices (most phones/tablets): libopenglplugin.so For Intel Atom devices: libopenglplugin_intel.so 2. Installation Steps
Place the file: After downloading, use a file manager to move the .so file onto your device's SD card or internal storage. Select the GPU Plugin: Open ePSXe and go to Preferences.
Tap on GPU Plugin and navigate to where you saved the .so file to select it. Set Video Renderer: Still in Preferences, go to Video Renderer. Change the setting to OpenGL Plugin. 3. Easier Alternative (Play Store App)
Instead of managing manual .so files, you can install the official ePSXe openGL Plugin app directly. This automatically configures the necessary files for version 2.0.10 or newer of the emulator. ePSXe openGL Plugin on Google Play Also available via Uptodown or Aptoide. Important Considerations Download ePSXe openGL Plugin 1.19.1 for Android - Uptodown
Important Security Note: Be cautious when downloading .so (shared object) files from random websites or file-hosting services. These are executable libraries, and downloading them from unverified sources can pose a security risk.
Recommended Method: If you own a copy of the ePSXe installer for Windows (ePSXe for PC), the plugin file is actually located inside that package.
plugins folder.libopenglplugin.so from there.This ensures you have the official, unmodified, and safest version of the plugin. The official OpenGL plugin is usually included in
| Setting | Recommended Value | Effect | | :--- | :--- | :--- | | GPU Renderer | OpenGL (Hardware) | Uses your GPU. | | Resolution | 2x or 3x (Native resolution of PS1 is 1x). | 2x = 480p, 4x = 1080p. Do not exceed 4x on mid-range phones. | | Filtering | Linear (or xBRZ for 2D games) | Smoothes textures. | | Screen Scaling | GPU (Scaled) | Matches screen aspect ratio. | | Widescreen Mode | On (for 16:9 screens) | Removes pillarboxing, but may show geometry glitches. | | Alpha Multipass | On | Fixes transparency effects (e.g., health bars in fighting games). | | Hardware VRAM | On | Speeds up texture loading. |
Pro Tip for Final Fantasy VII or VIII: Turn on "Framebuffer Access" to fix the menu flickering issue.