[Bf-committers] Making blender faster
trip at spymac.com
Thu Nov 18 16:25:49 CET 2004
That is what they do in zbrush. It is useful, except that you can not
rotate in 3d and paint anymore untill your done painting the current
On Nov 18, 2004, at 4:23 AM, Tom Musgrove wrote:
> I've been thinking about methods to make blender faster and capable of
> doing projection paint on large skins (ie 4000x4000 pixels) and
> working with large meshes (ie greater than 1 million verts and faces).
> For painting, what needs to be done is that you don't actually project
> the paint onto the object until you finish a brush stroke (or if you
> have threading, then when you have free processor time).
> What you are doing is, you convert the current screen view into an
> image. and project the brush to be the view image size. Then, you
> you only paint the image with the brush scaled to the appropriate
> size, while recording the stroke path of the brush.
> The pixels drawn by the stroke are buffered and the accumulated pixel
> changes are done (most of the pixels will have changed colors a number
> of times in a single stroke or series of strokes). Then, you project
> the cumulative pixel color change onto the image.
> Also you can use partitioning to only work on a small portion of the
> image which could also give a significant speed boost.
> This should allow us to have 'realtime' projection painting on
> extremely complex objects with large image maps.
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