[Bug 110781] Radeon: heavy r300 performance drop regression between 11.x and 19.x

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110781

--- Comment #55 from Alex Deucher <alexdeucher at gmail.com> ---
Performance will be better because the 3D engine is rendering to a smaller
surface (e.g., 640x480) regardless of whether you are fullscreen or windowed. 
The size of the rendered image is what impact 3D performance.  The scaler is
fixed function hw so it doesn't impact the 3D engine directly other than using
some memory bandwidth to read the source image.

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