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Patch by Romanov Alexander of blen4web team!
Differential: D842
Thanks for the patch!
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This is added in the spirit of the general cycles GLSL system
which is pretty much WIP still.
This will only work on cycles at the moment but generating for blender
internal is possible too of course though it will be done in a separate
commit.
This hasn't been tested with all and every node in cycles, but
environment and regular textures with texture coordinates work.
There is some difference between the way cycles treats some coordinates,
which is in world space and the way GLSL treats them, which is in view
space.
We might want to explore and improve this further in the future.
...also </drumroll>
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Also included mirror ball shader, which was missing.
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Reviewed By: brecht
Differential Revision: https://developer.blender.org/D781
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Even though GLSL allows to have polymorphic functions our codegen
is not aware of this at all.
Let's rename the functions for now, but in the future would be handy
to make codegen aware of the polymorphic functions.
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Should be no functional changes, just much less cryptic code.
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shader nodes (Blender Render)
Quite striaghtforward implementation, with the only weird thing that for some reason
my video driver wasn't happy with calling the function "clamp" giving some weirdo
shader compilation error messages.
Called the GPU function clamp_val which can handle float and vec3.
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of the Output Line Style node.
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BKE_get_linestyle_from_scene().
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Shader nodes will be used to define materials for stroke rendering, so as to
allow users to interactively configure textures.
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This came up a few times already, most of the time you want a clear white glass, and not a greyish like one. :)
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Issue here is that if there's a texture in the tree, chances are it has
already been set as active texture so groups are never traversed.
Now changed logic so that if a group node is active, its own active
texture takes priority over the parent group active texture.
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* Anisotropic BSDF now supports GGX and Beckmann distributions, Ward has been
removed because other distributions are superior.
* GGX is now the default distribution for all glossy and anisotropic nodes,
since it looks good, has low noise and is fast to evaluate.
* Ashikhmin-Shirley is now available in the Glossy BSDF.
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This was already possible via the RGB nodes, but that seems weird.
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A bunch of nodes had invalid storage definitions that don't refer to an actual
DNA struct. Ref T40033.
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Reviewed By: dingto, brecht
Differential Revision: https://developer.blender.org/D507
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modifiers, nodes)
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This can for example be useful if you want to manually terminate the path at
some point and use a color other than black.
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D454
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defaults.
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complete.
Fixes T37954.
Reviewed By: brecht, dingto
Differential Revision: https://developer.blender.org/D230
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compilation.
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Implements a more flexible internal connect function for standard nodes
(compositor, shader, texture). Allow feasible datatype connections by
priority.
The priorities for common datatypes in compositor, shader and texture
nodes are encoded in a simple function. Certain impossible connections
(e.g. color -> cycles shader) are excluded by giving them -1 priority.
Priority overrides link status: If a higher priority input can be found,
this will be used regardless of link status. Link status only comes into
play for inputs with same priority.
Reviewers: brecht
CC: sebastian_k
Differential Revision: https://developer.blender.org/D356
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It would include/exclude shadow depending on the pass being disabled/enabled,
but that should have no influence on the combined render result. Now it always
includes shadow.
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Blender Internal shader nodes.
All nodes now use the `nodestack_get_vec` function to convert whatever
input values are connected to the desired type, instead of using the
stack values directly regardless of what they contain.
Note that this might break old node setups that have been adapted to the
faulty behavior, but as discussed in the bug report the 2.70 version is
the right time to fix this.
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BI.
The shaderfrom setting in the node editor only makes sense for "new"
shading nodes (cycles), otherwise it should be ignored and default to
SNODE_SHADER_OBJECT.
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The same can be achieved by flipping normals on the mesh, but it can be
convenient to do this in the shader.
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only in "Material" viewport shading.
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consistent.
Reviewed by Brecht van Lommel, Thomas Dinges and Jonathan Williamson
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* Henyey-Greenstein scattering closure implementation.
* Rename transparent to absorption node and isotropic to scatter node.
* Volume density is folded into the closure weights.
* OSL support for volume closures and nodes.
* This commit has no user visible changes, there is no volume render code yet.
This is work by "storm", Stuart Broadfoot, Thomas Dinges and myself.
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information such as light vector from specified Lamp.
For now this provides the following outputs:
- Color
- Light Vector
- Distance
- Shadow
- Visibility Factor
Note: Color output is multiplied by the lamp energy. Multiplication of
color*max(dot(light_vector,normal_vector),0)*shadow*visibility_factor
produces the exact same result as the Lambert shader.
Many thanks to Brecht for code review and discussion!
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GLSL code for view vector output of "Geometry" node.
Revert 0c7d2de38219. The "Camera Data" node actually gives the location
of the point in camera coordinate system. To obtain actual camera data,
we can use "Geometry" node instead.
Also modify the "Geometry" node, to produce correct view vector output
in orthographic GLSL preview.
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