As Wayland doesn't support moving the cursor, draw a cross-hair cursor
at the location used by Blender.
Without this, the cursor was locked at the location where grab started,
making some actions unusable since the cursor location was invisible.
Resolves T77311.
Grab which didn't wrap would lock the cursor, making actions such
as resizing areas lock the cursor in-place.
Confine the cursor to the window instead.
This behavior was also used for X11 when grabbing the cursor was first
supported but could lock the system if Blender froze while grabbing so
it was disabled [0].
For Wayland this shouldn't be a problem as compositors implement grab
in a way that prevents the client from locking the system.
[0]: 3e3d2b7a4c
Shifted flag for buttons changed was incorrectly compared with
unshifted packet flag to determine button press state.
Also fix button tracking storage; button flags are 32 bits whereas the
member variable was 8.
Differential Revision: https://developer.blender.org/D14915
Rendering directly to a resource using OpenGL interop and Hgi
doesn't work in Houdini, since it never uses the resulting resource
(it does not call `HdRenderBuffer::GetResource`). But since doing
that simultaneously disables mapping (`HdRenderBuffer::Map` is
not implemented then), nothing was displayed. To fix this, keep
track of whether a Hydra viewport does support displaying a Hgi
resource directly, by checking whether
`HdRenderBuffer::GetResource` is ever called and only enable use
of OpenGL interop if that is the case.
Differential Revision: https://developer.blender.org/D15090
The packed image loader was not aware of the fact that UDIM tiles
can be of a different size.
Exposed Python API required to access this information. It has the
same complexity as the "regular" packed files: in both cases the
ImBuf will be acquired and released to access the information.
While the current workflow of packing UDIMs is not very streamlined,
it is still possible and is something what the studio is using here.
Test file:
{F13130516}
Expected behavior achieved with this patch: a bigger checker board
pattern in viewport render
Actual behavior prior to this patch: either memory corruption, or
wrong/black render result on the plane
Differential Revision: https://developer.blender.org/D15111
Acceleration structures in the viewport default to building with the fast
build flag, but the intersection program used for curves was queried with
the fast trace flag. The resulting mismatch caused an exception in the
intersection kernel. Since it's difficult to predict whether dynamic or static
acceleration structures are going to be built at the time of kernel loading,
this fixes the mismatch by always using the fast trace flag for curves.
For non-raw, non-sRGB color spaces, always use half float even if that uses
more memory. Otherwise the precision loss from conversion to scene linear or
sRGB (as natively understood by the texture sampling) can be too much.
This also required a change to do alpha association ourselves instead of OIIO,
because in OIIO alpha multiplication happens before conversion to half float
and that gives too much precision loss.
Ref T68926
It can be assumed that all scripts comply with basic pep8 formatting
regarding white-space, indentation etc.
Also remove note in best practices page & update `tests/python/pep8.py`.
If we want to exclude some scripts from make format,
this can be done by adding them to `ignore_files` in:
source/tools/utils_maintenance/autopep8_format_paths.py
Or using `# nopep8` for to ignore for individual lines.
Ref T98554
Move MNEE to own kernel, separate from shader ray-tracing. This does introduce
the limitation that a shader can't use both MNEE and AO/bevel, but that seems
like the better trade-off for now.
We can experiment with bigger kernel organization changes later.
Differential Revision: https://developer.blender.org/D15070
When multiple objects are in edit mode, UVs for the objects, except for
the first one (in rendering order) appear corrupted. The corruption is
because the UVs are not evaluated as the compute shader is not bound,
thus we read unitialized memory.
We keep track of the currently bound shader in the GPU context in order
to avoid unnecessary shader switches in case the same shader is used in
consecutive calls. However, the shader used by the OpenSubdiv evaluator
is not part of Blender and therefore not tracked via the GPU context.
When extracting UVs for multiple objects, we only ever run a single
shader (FVar evaluation). However, between the compute calls, we also
call the OpenSubdiv stencil evaluation shader, which uses `glUseProgram`
modifying the current program, outside of our control, which then also
unbinds the Blender compute shader making the compute dispatch fail ("No
active compute shader").
The fact that extracting the UVs for the first rendered object works is
because another (Blender) shader was bound in the GPU context prior to
our binding of our evaluation shader.
To fix this, we remember, in the OpenSubdiv evaluator, the current
program so that it can be reset after the stencil program is done.
Differential Revision: https://developer.blender.org/D15064
Subdivision did not properly update when evaluating first without and then with
orco coordinates. Now update the subdivision evaluator settings every time, and
reallocate the vertex data buffer when needed.
there is an additional issue in this file where orco coordinates are not
available immediately on the first frame when they should be, and only appear
on the second frame. However that is an old limitation related to the depsgraph
not getting re-evaluated on viewport display mode changes, here we just fix the
crash.
Since [0], using the view navigation gizmo crashed with Wayland.
This only worked previously because GHOST_kGrabWrap was ignored.
Now the previous grab state is disabled before switching to a new
grab state.
[0]: da9e14b0b9
After recent changes to Nishita sky to clamp negative colors, the pixels ended
up a bit brighter which lead to them exceeding the half float max value. The
CUDA float to half function seems to need clamping.
Dragging number buttons wasn't grabbing the cursor and would stop
when the pointer reached the screen edge & wasn't setting the cursor
visible on completion.
Mostly using built-in `__atomic` functions, with a special code path
using `MemoryBarrier()`on windows.
Authored By: Sergey Sharybin (sergey)
Reviewed By: Sergey Sharybin (sergey), Ray molenkamp (LazyDodo)
Ref D15020
Regenerate blackbody RGB curve fit to not clamp values, and extend down to
800K since it does now change below 965K.
Note that as before, blackbody is only defined in the range 800K to 12000K
and has a fixed value outside of that. But within that range there should
be no more unnecessary gamut clamping.
This patch makes it possible to change the precision with which to
store volume data in the NanoVDB data structure (as float, half, or
using variable bit quantization) via the previously unused precision
field in the volume data block.
It makes it possible to further reduce memory usage during
rendering, at a slight cost to the visual detail of a volume.
Differential Revision: https://developer.blender.org/D10023
