This fixes the problem that matcaps have when using a very larg FOV in
perspective view.
This was because it was stupidly using the normal direction which can not
aligned with the view vector under perspective.
So to workaround this problem we don't use the normal as is, but compute
how much it's facing the camera.
This changes how matcaps looks in perspective because they now always use
the full range of the matcap (which is expected).
A cavity shader based on SSAO. Works on all workbench deferred passes.
Per 3d viewport the cavity shader options can be set as different
shading needed different options. Some global options are in the
Viewport Display of the scene like num samples and distance.
Experimental: Naming of Ridges and Valleys
- users can use their own matcaps
.config/blender/2.80/datafiles/studiolights/matcap/ folder
- upto 100 matcaps can be loaded
- color of the matcap is influenced by the color of the material/single
color etc. To show the plain matcap use single color at 1.0
- chosing a matcap is at lighting level (flat/studio/matcap)
- matcap only possible in solid mode
- also works for X-Ray mode
As the old matcaps are still in used by the clay engine I didn't remove
it yet.
Non-manifold geom was producing inverted result when the camera was inside
the shadow volume.
When rendering non manifold geometry with the depth fail method, we need to
emit the cap as if it was the same geometry with a virtual thickness.
Another way to view it is to imagine having a set of non-manifold geometry
all facing the light.
So for every tri we emit a front cap oriented toward the light and the
back cap pointing away from it (whatever the actual orientation of the tri).
Extrusion pass stay the same as the depth pass method (double the increment
if it's a manifold edge).
Now hairs are shaded properly in workbench and support texturing.
I also added a 10% random normal direction per hair to have a bit more
variation in the shading. This is hardcoded for now.
- Uses the roughness setting of the basic eevee material
- renamed gloss_mir to roughness
- set default of roughness to 0.25
- renamed ray_mirror to metallic
- cleaned up material rna (BI mirror struct)
- use BLINN phong model
- normalize incoming/outgoing specular light
- when using camera oriented studiolight, the SolidLight will be used
for specular highlights
- EXPERIMENT: when in world oriented studiolight only the shadow direction will be used.
- change the settings of the internal light to make scenes more
readable
Made the highlights darker (using the defaults of blender 2.7
- sharpness = 50
- spec color = 0.025 (I bumped it to 0.1)
- added a log2 to the frontal camera light to reveal more details of the
mesh
Unmultiplied the final color during compositing. Same as the revealage
buffer would do
Also use the DRW_STATE_ADDITION_FULL as it is aware of premultiplied
colors
If a mesh is known to be manifold, then it's not necessary to increment the
stencil buffer 2 times anymore. But we still need to account properly for
degenerate triangles.
In this case, only generate a quad if the tri is facing the lamp. If there
is a degenerate loop, the other edge will either cancel the increment (if
it is also facing the light) or not produce a quad (if not facing).
This will always give the correct count.
Seems that degenerate tris are somewhat widely used in modeling. So we need
to fix this. Test the edges in the geom shader since the adjacency info is
only dependant on topology, not actual vertex placement.
This fixes most of the remaining noise issues. Only a few artifacts appear
on really weird models. So if you want to get rid of the artifacts, fix
your model!
This makes the shadows ~10 times faster in the general case.
This only create extrusion geometry on the outline edges. Also we increment
or decrement the stencil buffer by 2 for each manifold edge and only by 1
for non manifold. This make the algorithm robust yet less heavy than creating
one prism for each triangles.
Initial review of the shard shadows in the workbench engine.
Speed optimizations like transform feedback are not implemented yet. I first want this part to be reviewed and merged.
@fclem please check the note in drw_stencil_set it was holding back nequal == 0 as by default DST.stencil_mask was set to 0. questioin is should we remove the whole check or not.
Also I am still looking for a better name (or split the enum) for DRW_STATE_STENCIL_DEPTH_FAIL_INCR_DECR_WRAP
Reviewers: fclem
Reviewed By: fclem
Tags: #code_quest
Differential Revision: https://developer.blender.org/D3198
Normal packing. The sign is stored in the A of the color buffer.
if the A == 1.0 the normal should be inverted. before use.
The reason is that packing has more precision for frontfaces, than for
backfaces
