How to Make PS1-Like Retro Graphics in Unity

Creating PS1-like retro graphics in Unity involves emulating the visual style of the original PlayStation console, which had limited hardware capabilities compared to modern systems. This style is characterized by low-polygon models, low-resolution textures, and a distinctive blend of 3D and 2D elements. Here's a step-by-step tutorial with practical examples to achieve this aesthetic:

Step 1: Set Up a Unity Project

Create a New Unity Project if you haven't yet:

• Open Unity Hub and click on "New Project."
• Choose a 3D project template.

Step 2: Configure Project Settings

Graphics Settings:

• Go to 'Edit -> Project Settings -> Player'.
• In the Resolution and Presentation section, set the Default Is Full-Screen option.
• Set the Fixed Resolution option and set the resolution to a low value like 320x240.

Step 3: Create Low-Polygon Models

Import Primitive Shapes:

• Create or download low-polygon models (primitive shapes work well).
• Import them into Unity.

Adjust Mesh Settings:

• Select a model and reduce its vertex count.
• Adjust the mesh settings to create a blocky appearance.

Step 4: Apply Low-Resolution Textures

Texture Import Settings:

• Import textures with low resolutions (e.g., 64x64 or 128x128).
• Adjust the 'Filter Mode' to 'Point (no filtering)'.

Apply Textures to Models:

• Drag and drop the textures onto the low-polygon models.

Step 5: Implement Vertex Color Shading

Vertex Color Shader:

• Create a simple shader that uses vertex colors instead of relying on complex lighting.
• Assign this shader to your low-polygon models.

Step 6: Add Dithering

Dithering Post-Processing:

• Import a dithering shader (search for Unity dithering shaders on GitHub).
• Apply the dithering shader to your camera.

Step 7: Use Fixed Camera Angles

Orthographic Camera:

• Set your main camera to orthographic projection.
• Adjust the camera's rotation and position to emulate fixed angles.

Step 8: Implement Limited Color Palette

Color Palette:

• Limit your color choices to a specific palette (similar to the PS1 palette).
• Convert textures to this limited color space.

Step 9: Blend 2D Elements

2D Sprites:

• Import 2D sprites for UI elements or other details.
• Blend them with the 3D scene by adjusting their transparency.

Step 10: Test and Iterate

Playtest:

• Regularly playtest your game to ensure the desired retro look and feel.

Iterate:

• Adjust settings, shaders, and textures based on feedback and your own preferences.

Conclusion

By following these steps, you can achieve a PS1-like retro graphics style in Unity. Experiment with different settings, shaders, and assets to fine-tune the aesthetic for your specific project. Remember, the charm of PS1-era graphics lies in their limitations, so embrace the simplicity and uniqueness of this visual style.