forge-linear-fog

To add depth fog to an SDL GPU scene, append a fog uniform block to your shaders and calculate distance-based blending in the fragment shader after lighting. This simulates atmospheric perspective by fading distant geometry toward a specified fog color.

Yes, the fog implementation supports linear, exponential, and exponential-squared fog modes. You can configure these modes within the fog uniform block alongside fog_color, fog_start, fog_end, and fog_density to achieve varied atmospheric perspective effects.

You need to set up a fog uniform block containing fog_color, fog_start, fog_end, fog_density, and fog_mode. These parameters drive the depth-based fog calculation applied in the fragment shader after lighting.

Yes, depth fog is designed for real-time 3D SDL3 GPU applications with dynamic cameras and varied lighting. It calculates distance based on depth values, ensuring atmospheric perspective remains accurate as cameras move through outdoor scenes.

Applying distance fog after lighting ensures the fog color blends correctly with the final lit surface colors. This approach preserves local lighting details on nearby objects while smoothly fading distant geometry to simulate atmospheric haze.

Applying distance fog is an effective way to reduce Z-fighting visibility at far distances. By fading distant geometry toward a fog color using linear or exponential modes, depth precision artifacts become visually obscured in outdoor scenes.