RMA

RMA stands for Roughness + Metallic + Ambient occlusion, which are packed into the red, green, and blue channels of a bitmap.

These maps are used with PBR (Physically Based Rendering).

The process of combining different maps into RGB channels is called channel packing.

Tools

• Photoshop alpha channels
• Gimp alpha channels
• Channel Shuffle

More Information

• Ambient occlusion map
• ChannelPacking
• MultiTexture
• Normal Map Compression
• PBR
• Roughness map
• Metallic map
• Shaders
• Texture atlas
• TextureCoordinates

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