Vector blur was averaging z-values between pixels, which could give
wrong z-test results. While averaging is needed for speed vectors
to avoid holes, for z-values it is not required and not doing it
seems to avoid artifacts in specific cases.
In compositor, not always all scenes rendered... this was why:
When disabling 'save buffers', but keeping the 'full sample' option, the
*other* scenes in a composite didn't render.
compositor node, another in render_realtime_texture. Note that multilayer images
in the image compositor node do not respect the premul flag (though I did write
commented out code for it).
As far as I can tell, the premul option never worked for multilayer images in the
image node, so I'm a little nervous about making it work properly there.
ton, any comments?
basically flagged the image so that on next load/reload, the image
data would be converted to premul. This was very confusing to the
user, as it meant premul wouldn't take effect will the image was
reloaded, and it would also change the image data, which the user
might've been painting.
To fix this, I've removed this behaviour and instead made the premul
option apply at render time. During render while evaluating an image
texture, if the image has the premul flag set then the premul operation
is done on the texture result data, thus not touching the image data
at all.
Also, I've made premul be turned on by default.
I also added a button to control enabling/disabling SSS for render.
- Fix for potential halo sorting crash.
- Add a newline at the end of a file to remove gcc warning.
This adds a few settings to control global render quality, for faster
renders when tweaking lighting etc. The implementation is not so great,
and this should really be part of a proper render profile and preset
system. So for now it's a hidden Peach feature, enabled by setting rt
to 1. Before the next release, I'll either remove or improve it.
Settings are:
- Maximum subsurf level
- Child particles percentage
- Maximum shadow map samples
- AO and SSS quality factor
scenes could crash, there was code to make sure osa level is
the same in all scenes, but that was set too late, after sample
tables are created.
Fix for some unitinialized vector warnings with FSA, these were
harmless, unfortunately.
images. Found method that doesn't require image to be rendered larger.
Note: assembling pre-rendered parts that are result of FSA renders might
still give minor visible artefacts on edges; however, we should include
such render methods in the render pipeline, so multiple computers can
each render parts, save all samples, and have 1 computer assembling and
compositing all. This is for another project... :)
Press Rkey in compositor for reading back render results and invoke a compo.
This now correctly reads AO (skipped it sometimes) and it makes a correct
composite.
FSA todo:
- hotkey + button for reading all samples back + composite
- solve black border around image
Now bounding boxes are computed per object, and checked first before
zbuffering objects. For strands, bounding boxes are computed per
original face in the mesh. Overall the speed improvement from this
is quite small (zbuffering is rarely the bottleneck), but it seems a
sensible thing to do anyway.
They now also store a list of samples per pixel, and then get
shaded together with the ztransp samples. This comes with a
slight speed hit, but mainly memory might be a concern. However,
testing some peach scenes I haven't problems.
This completes the pipeline make-over, as started in 2006. With this
option, during rendering, each sample for every layer and pass is being
saved on disk (looks like non-antialiased images). Then the composite
and color correction happens, then a clip to 0-1 range, and only in end
all samples get combined - using sampling filters such as gauss/mitch/catmul.
This results in artefact-free antialiased images. Even Z-combine or
ID masks now work perfect for it!
This is an unfinished commit btw; Brecht will finish this for strands.
Also Halo doesnt work yet.
To activate FSA: press "Save Buffers" and the new button next to it. :)
Problem: artist wants character to walk in grass, but still have all rendered
in seperate render-layers, for postpro effects and vblur. How to efficiently
create a mask image you can put *over* the character for the grass?
Solution has two parts; this commits allows any layer inside of the renderlayers
to become a Z-mask (Z values for solid gets filled in, but not rendered).
Second part of commit is render option "Only render stuff that's in front of
a zbuffer value that was filled in (saves render time)
of strands changing between frames, vector blur couldn't work. Now
speed vectors are interpolated from the surface. This also means
child particles don't have to be computed in the previous and next
frames, so saves time too.
