diff options
Diffstat (limited to 'README')
| -rw-r--r-- | README | 17 |
1 files changed, 8 insertions, 9 deletions
@@ -1,3 +1,10 @@ +rototiller is, rendered entirely in software: + roto: a simple fixed-point tiled texture rotation + ray: a multi-threaded ray tracer + sparkler: a fireworks-like particle system with spatial interactions + +--- + This is a quick little graphics hack I put together to experiment with libdrm and this "dumb buffer" thingy David Airlie added to the kernel back in 2011. @@ -18,14 +25,6 @@ resolutions and abundant memory for 32bpp with page flipping. In my testing so far, this seems to work without even requiring root. -The test machine is a 1.6Ghz Core2 duo w/i915 and 1400x1050 (x61s w/SXGA+), and -rototiller64 only uses 30-40% of one core, rendering a flawless 50HZ. - -As for the files, they're identical, except rototiller64 writes 64-bit words at -a time to the graphics buffer, rototiller32 writes 32-bit words at a time. On -the test machine 64-bit is good for a few % CPU savings. I included the 32-bit -version since it's simpler to read and maybe you have a 32-bit box. - Before you try to run these things, realize this is direct libdrm graphics, it's going to compete with your X/wayland server. Switch to a plain virtual console to run the program. You don't need to quit X, just switch away from the @@ -33,7 +32,7 @@ X vt so it's not visible. To quit it's as simple as Ctrl-C, rototiller will otherwise run forever. -Do not try switching back to X while rototiller is running, Ctrl-C it first, or +Do not try switching back to X while rototiller is drawing, Ctrl-C it first, or X will get angry and exit when it tries to do drm things and can't. Your display may be left in an inconsistent state after exiting rototiller. |