The NanoVDB sampling implementation behaves different from dense texture sampling, so this
adds a small offset to the voxel indices to correct for that.
Also removes the need to modify the sampling coordinates by moving all the necessary
transformations into the image transform. See also T81454.
The issue is that the shaders are stolen from the original Geometry by
the temporary Geometry used to accumulate data, but the main thread
still needs them for syncing the attributes.
So make a copy of the shader array to preserve the data on the original
Geometry.
This encapsulates Node socket members behind a set of specific methods;
as such it is no longer possible to directly access Node class members
from exporters and parts of Cycles.
The methods are defined via the NODE_SOCKET_API macros in `graph/
node.h`, and are for getting or setting a specific socket's value, as
well as querying or modifying the state of its update flag.
The setters will check whether the value has changed and tag the socket
as modified appropriately. This will let us know how a Node has changed
and what to update, which is the first concrete step toward a more
granular scene update system.
Since the setters will tag the Node sockets as modified when passed
different data, this patch also removes the various modified methods
on Nodes in favor of Node::is_modified which checks the sockets'
update flags status.
Reviewed By: brecht
Maniphest Tasks: T79174
Differential Revision: https://developer.blender.org/D8544
This avoids recomputing the BVH for geometries that do not have changes in topology but whose vertices are modified (like a simple character animation), and gives up to 40% speedup for BVH building.
This is only available for viewport renders at the moment.
Reviewed By: pmoursnv, brecht
Differential Revision: https://developer.blender.org/D9353
This patch allows the user to type a property name into the
Attribute node, which will then output the value of the property
for each individual object, allowing to e.g. customize shaders
by object without duplicating the shader.
In order to make supporting this easier for Eevee, it is necessary
to explicitly choose whether the attribute is varying or uniform
via a dropdown option of the Attribute node. The dropdown also
allows choosing whether instancing should be taken into account.
The Cycles design treats all attributes as one common namespace,
so the Blender interface converts the enum to a name prefix that
can't be entered using keyboard.
In Eevee, the attributes are provided to the shader via a UBO indexed
with resource_id, similar to the existing Object Info data. Unlike it,
however, it is necessary to maintain a separate buffer for every
requested combination of attributes.
This is done using a hash table with the attribute set as the key,
as it is expected that technically different but similar materials
may use the same set of attributes. In addition, in order to minimize
wasted memory, a sparse UBO pool is implemented, so that chunks that
don't contain any data don't have to be allocated.
The back-end Cycles code is already refactored and committed by Brecht.
Differential Revision: https://developer.blender.org/D2057
Uniform attributes require immediate access to the shader list
in object update code, so setting the field can't be deferred
to a background task. This required adding a parameter to the
clear method of Geometry.
Ref D2057
WM_POINTERLEAVE occurs when the pen goes out of range or when a
hovering pen leaves the window's boundary. When leaving the window
boundary the xy position is invalid for some Wacom devices.
This change removes creation of GHOST_EventCursor during
WM_POINTERLEAVE events. This prevents unexpected jumping behavior
during continuous grab.
Cycles defines some basic integer types since it cannot use the standard headers when
compiling with NVRTC. NanoVDB however only does this when the "__CUDACC_RTC__" define
is set and otherwise includes the standard "stdint.h" header which clashes with those typedefs.
So for compatibility do the same thing in the Cycles kernel headers. See also T81454.
While Cycles already supports using both CPU and GPU at the same time, there
currently is a large problem with it: Since the CPU grabs one tile per thread,
at the end of the render the GPU runs out of new work but the CPU still needs
quite some time to finish its current times.
Having smaller tiles helps somewhat, but especially OpenCL rendering tends to
lose performance with smaller tiles.
Therefore, this commit adds support for tile stealing: When a GPU device runs
out of new tiles, it can signal the CPU to release one of its tiles.
This way, at the end of the render, the GPU quickly finishes the remaining
tiles instead of having to wait for the CPU.
Thanks to AMD for sponsoring this work!
Differential Revision: https://developer.blender.org/D9324
Previously Wintab was handled by saving the most recent tablet pressure and tilt information and deferred appending tablet infromation to Windows mouse events. This caused synchronization issues evident at the beginning and ending of strokes where pressure and tilt were either ahead or behind in time from mouse button up or down events. This also dicarded swaths of data which resulted in blockly grease pencil lines most apparent when a context switch resulted in several coalesced mouse events.
This patch changes the behavior of Wintab to instead rely entirely on Wintab information for pressure, tilt, position, and button input.
Wintab has several design decisions and conventions which complicate relying soley on it's input while retaining current workflows reliant on non-API behavior. For example, many device optionally allow the user to map barrel buttons to non-mouse actions. These mappings may or may not modify the intended behavior when touching the stylus down, such as scroll vs alt mappings. This behavior is not exposed in the Wintab API, but Wintab will continue updating button state sans this necessary context.
To work around the problem, this refactor synchronizations tablet input to Windows mouse down and up events, this captures events which should result in pen input while allowing events such as pen scrolling. Until a Windows mouse down event fires Wintab input is left unprocessed; when a Windows up event occurs Wintab is processed until a corresponding button up event is found.
Wintab allows for either button state or changes to be reported, but not both. An earlier refactor tried to use button changes to let state to be managed by Wintab. This was replaced when it was found that button change events were unreliable at corner cases such as switching windows. It was also found that with Wacom drivers Wintab peek functions would modify events in the queue causing errant and loss of button events.
For the latter stated reason this patch opts to read all Wintab events into a queue as they arrive, removing events as they become stale. This was chosen over using Wintab peek functions due to the afformentioned issue. As a bonus this seems to work better as it prevents the queue in Wintab from filling, thus neither a flood of events need to be handled when Wintab processing begins and a Wintab implementation need not be trusted to overwrite old events in it's queue.
Maniphest Tasks: T75566
Differential Revision: https://developer.blender.org/D7840
event to the button down location as this should be a more accurate point
of contact than the last mouse move event.
Signed-off-by: Nicholas Rishel <rishel.nick@gmail.com>
events until one is found. This prevents errant cursor moves that occur
before the Wintab button event is reported. We need to skip these events
because if no button event exists, we generate one assuming it will either
arrive later in the Wintab queue or that the button was from a non-Wintab
device. For the case that this was generated by a non-wintab device, such
as buttons mapped to mouse on the tablet pad, these cursor move events can
significantly move the cursor from the intended click position.
Signed-off-by: Nicholas Rishel <rishel.nick@gmail.com>
the issue with Wintab button events are more significant than simply
setting what buttons should receive button up/down events during context
initialization.
Signed-off-by: Nicholas Rishel <rishel.nick@gmail.com>
handling mouse input. This Wintab to mouse synchronization issues, and
likely prevents queue exhaustion for some Wintab implmenetations.
Signed-off-by: Nicholas Rishel <rishel.nick@gmail.com>
window intitialization can specify whether it will be visible regardless
of whether it is yet visible.
Signed-off-by: Nicholas Rishel <rishel.nick@gmail.com>
Button events now include tabletdata, so move is unnecessary.
Generate mouse button events when the system has an event but Wintab did not find a correlated event.
Only filter mouse button events, not Win32 Pointer events.
Signed-off-by: Nicholas Rishel <rishel.nick@gmail.com>
Maniphest Tasks: T75566
Differential Revision: https://developer.blender.org/D7404
Basic support for velocity updates with the APIC method.
This commit adds APIC to the already existing dropdown menu for the simulation method. The APIC plugin within Mantaflow has been updated to the latest version.
Don't use the current mouse position at the time the event is handled, but
rather the position at the time of the event. This should make e.g. brush
stroke paths more accurate.
In addition, this may solve issues with other software that does mouse
position smoothing. Ref T82143.
Use of the current mouse position was added in 12b642062c as part of a
large commit that also made continuous grab work. But it appears to still
work getting the mouse position from the event.
