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Alpha to coverage : ウィキペディア英語版 | Alpha to coverage
Alpha to coverage is a multisampling computer graphics technique useful for situations where dense foliage or grass must be rendered in a video game. This technique uses the alpha channel of textures as a coverage mask for anti-aliasing. Alpha to coverage multisampling is based on regular multisampling, except that the alpha coverage mask is ANDed with the multisample mask. Alpha-to-coverage converts the alpha component output from the pixel shader to a coverage mask. When the multisampling is applied each output fragment gets a transparency of 0 or 1 depending on alpha coverage and the multisampling result. ==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Alpha to coverage」の詳細全文を読む
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