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Should i use VK_FORMAT_R8G8B8_UNORM for backbuffer format in vulkan?

sindney

Hey, i noticed our game's opengles rhi uses r8g8b8_unorm format as backbuffer color. The vulkan rhi uses VK_FORMAT_R8G8B8A8_UNORM by default, should we use VK_FORMAT_R8G8B8_UNORM instead if supported to save bandwidth? Does uisng VK_FORMAT_R8G8B8_UNORM as backbuffer has any side effects?

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