ATI Technologies RADEON 7500, User Manual

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OpenGL Settings
Convert 32 bit textures to 16 bit allows you to increase video
performance for games that make heavy use of textures.
However this could also reduce image quality.
Enable KTX buffer region extension enables rapid updates of
those portions of your screen that have been moved.
Enable page flipping allows you to enable hardware
acceleration of page flipping to swap full screen buffers.
Force 16-bit Z-buffering allows you to disable all other
formats of Z-buffer and utilizes 16-bit Z-buffering.
Disable dithering when alpha blending may remove artifacts
left on the screen when both dithering and alpha blending are
enabled.
Wait for vertical sync lowers the frames per second rate in full
screen games. However this can reduce the image tearing that
can occur with higher frame rates.
Enable texture compression enables and disables texture
compression.
Full Screen anti-aliasing allows you to set the level of full-
screen anti-aliasing. This will result in an overall higher quality
image with a slight reduction in performance.
Anisotropic texture filtering allows you to set a level of
anisotropic texture filtering. This will result in much higher
quality textures with a negligible reduction in performance.
Level of Detail allows you to set the level of mipmapped detail.
The Sharp setting is recommended for larger, more detailed,
mipmapping scenes. The Fuzzy setting is recommended for
smaller, less detailed, mipmapping scenes.