From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: To: 9fans@cse.psu.edu Subject: Re: [9fans] point2rgb and point2rgba Date: Mon, 31 Jan 2005 12:48:43 -0700 From: andrey mirtchovski In-Reply-To: <7871fcf5050131113724b79a68@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Topicbox-Message-UUID: 3ab7d2d2-eace-11e9-9e20-41e7f4b1d025 > IIRC, the XaoS fractal browser uses some form of double buffering and > whole-screen updates to get decent performance. My guess would be that > for 2-D graphics=E2=80=94even at the high end (like real-time MPEG-2 or= MPEG-4 > display)=E2=80=94such would be sufficient. Does the current draw device > penalize these operations so much? >=20 > --Joel xaos uses a CMAP8 image to which it loads a bitmap, the image is then drawn using draw().. the problem with that is the slowdown is twofold -- once to transfer the bitmap to draw, then the draw operation itself is slow if the image has a different channel than the display.