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Smaller textures help with performance?

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Smaller textures take less time to upload to the GPU, and use less memory while there. The performance of *how fast* something renders is not related directly to the texture size, but instead to *what you are rendering*. For example, rendering a screen with 1024x1024 pixels is faster than a screen with 2048x2048 pixels because the fragment shader runs on less pixels. Its all about the shaders, and the viewport size, not necessarily the texture you use.

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