This reduces the API and make it more clear where there
is the global access.
This also removes some of these global access by merging
the `DRW_context_get()` calls.
This removes the old `DrawEngineType` and use the new `DrawEngine`
virtual class instead.
This removes a lot of boilerplate functions that were only there for
legacy reason.
To this end, some engines that were based on static functions have been
refactored into `Instance` classes. This was particularly cumbersome
for the Grease pencil engine which needed some more refactoring.
The `Engine` class that is in each namespace is a workaround to isolate
the internal implementation (i.e. the `Instance`) to the engine
modules. Without this, the whole engine is getting included in each
compile unit that includes the `Instance` class. Eventually, if we get
rid of these intricate dependencies, we could remove the `Engine` class.
Pull Request: https://projects.blender.org/blender/blender/pulls/136001
This refactor part of `draw_manager_c.cc` to make it more understandable
and less bug prone.
- Splits the context handing to `draw_gpu_context.cc`
- Rename `draw_manager_c.cc` to `draw_context.cc`
- Merge `DRWContextState` into `DRWContext`
- Merge lots of static functions into `DRWContext` to avoid global access
- Deduplicate code between entry point functions
- Move context init logic to `DRWContext` constructor
- Move resource init logic to `DRWContext::acquire_data`
- Move extraction `TaskGraph` out of `DRWContext`
- Reduce / centralize complexity of enabling draw engines
- Reduce the amount of `drw_get` calls
- Remove unused code
Pull Request: https://projects.blender.org/blender/blender/pulls/135821
This removes the use of `system_gpu_context_mutex`
which was making render command submission threadsafe.
The only issue is the concurent usage of GPUShader objects.
To fix this, we only guard the submission section which
are the only parts that uses the GPUShaders.
Removing this critical section all together requires some changes
in the GPUShader. See #135406
Rel #134690
Pull Request: https://projects.blender.org/blender/blender/pulls/135595
This avoid having to flush explicitely and the need for syncing.
It also removes a lot of complexity in the process.
These updates are not granular and do not need to so much
boiler plate code.
The depsgraph update counter now becomes atomic to avoid
undefined behavior when a depsgraph is being destroyed and
its memory reused (same thinking as the non-copy-on-eval IDs).
I tested some use cases (object update, sculpt update,
shading update) and they are all working.
Pull Request: https://projects.blender.org/blender/blender/pulls/135580
Though "Point Cloud" written as two words is technically correct and should be used in the UI, as one word it's typically easier to write and parse when reading. We had a mix of both before this patch, so better to unify this as well.
This commit also renames the editor/intern/ files to remove pointcloud_ prefix.
point_cloud was only preserved on the user facing strings:
* is_type_point_cloud
* use_new_point_cloud_type
Pull Request: https://projects.blender.org/blender/blender/pulls/134803
The core issue was that the geometry batch cache (e.g. `MeshBatchCache` or
`PointCloudBatchCache`) was dependent on the object. This is problematic when
the the same geometry is used with multiple different objects because the cache
can't be consistent with all of them.
Fortunately, the only thing that was retrieved from the object was the number of
material slots, so if that can be avoided we should be fine. We can't just use
the number of material slots stored on the geometry because that may have no
material slots but still has material indices which are overridden on the object
level.
The solution is to take make the number of materials for a geometry only
dependent on the actual `material_index` attribute and not on the number of
available slots. More specifically, we find the maximal referenced material
index and handle that many materials. This number does not depend on how many
material slots there are on the object, but it still allows the object to
override materials slots that the mesh references.
A downside is that the maximum material index has to be computed which often
requires an iteration over the mesh. Fortunately, we can cache that quite easily
and the computation can be done in parallel. Also we are probably able to
eagerly update the material index in many cases when it's set instead of
computing it lazily. That is not implemented in this patch though.
The largest part of the patch is making the maximal material index easily
available on all the geometry types. Besides that, the material API is slightly
replaced and the drawing code now makes use of the updated API.
Pull Request: https://projects.blender.org/blender/blender/pulls/133498
Especially through DRW_render.hh, there were a lot of unnecessary
includes almost everywhere in the module. This typically makes
dependencies less explicit and slows down compile times, so switch
to including what files actual use.
Pull Request: https://projects.blender.org/blender/blender/pulls/133450
When using clangd or running clang-tidy on headers there are
currently many errors. These are noisy in IDEs, make auto fixes
impossible, and break features like code completion, refactoring
and navigation.
This makes source/blender headers work by themselves, which is
generally the goal anyway. But #includes and forward declarations
were often incomplete.
* Add #includes and forward declarations
* Add IWYU pragma: export in a few places
* Remove some unused #includes (but there are many more)
* Tweak ShaderCreateInfo macros to work better with clangd
Some types of headers still have errors, these could be fixed or
worked around with more investigation. Mostly preprocessor
template headers like NOD_static_types.h.
Note that that disabling WITH_UNITY_BUILD is required for clangd to
work properly, otherwise compile_commands.json does not contain
the information for the relevant source files.
For more details see the developer docs:
https://developer.blender.org/docs/handbook/tooling/clangd/
Pull Request: https://projects.blender.org/blender/blender/pulls/132608
Allow passing range of resources inside the draw manager.
This allows to reduce the overhead of the drawing logic
for group of instances sharing the same drawing state.
The only catch is that we do consider them as having the
same handedness, which seems to be a valid assumption for
now.
For now this is not used and just change the API in a transparent
way to allow incremental changes to the engines code.
Pull Request: https://projects.blender.org/blender/blender/pulls/130290
The crash was caused by the texture wrapper being out of date.
This happened after workbench finished rendering AntiAliasing and
going into blit-result-only mode. Doing so was causing a use after
free caught by ASAN.
But this only partially fix the bug as workbench render then becomes
uninitialized (black most likely) after dragging the window to the
second monitor. This is because the TAA texture gets recreated since
the new viewport resolution doesn't match the old one. But this
recreation does not tag as a viewport update so the TAA stays in
blit-result-only mode.
Detecting the viewport resolution change at the engine init level
seems the safest option for now, and it fixes the remaining issue.
To be backported to 4.2.
Pull Request: https://projects.blender.org/blender/blender/pulls/130043
The PBVH struct is now called `bke::pbvh::Tree`. Expanding the acronym
in the file name just a little should help developers find things and make
the connection to the "paint" concept that loosely ties sculpt mode and
other painting modes together a little stronger.
This rename also lets us replace the weird `_api.hh` historical part of
the file name without reusing the old `BKE_pbvh.hh` file name, which
would have probably made understanding the git history a bit harder.
Pull Request: https://projects.blender.org/blender/blender/pulls/129684
Part of #118145.
In the future we want to move the ownership of the BVH tree to the
original mesh rather than `SculptSession`, in order to persist it
across some more general non-topology changing operations like
node tools. The first step of that change is replacing all places
that used `SculptSession::pbvh` for access with a function.
Since the `overlays_enabled` optimizations were introduced in
fe39456ba5, it has been a constant
source of bugs: #113741, #116403, #120628, #125414
There are many cases where the code expects to have the Workbench
depth available even when overlays are disabled.
So this simply disables the optimization and ensures the depth buffer is
always valid.
Pull Request: https://projects.blender.org/blender/blender/pulls/125447
The value was set and transfered to `MeshBatchCache`but never
actually used. Even then, this is clearly not a good solution to the
problem the comments mentioned. If that happens if would be
better to solve it in a different way.
Clear depth from Workbench when overlays are disabled.
Disable alpha blend and enable depth testing in the transfer mode
overlay so it works without a previously rendered depth buffer.
Pull Request: https://projects.blender.org/blender/blender/pulls/123729
The `object_to_world` and `world_to_object` matrices are set during
depsgraph evaluation, calculated from the object's animated location,
rotation, scale, parenting, and constraints. It's confusing and
unnecessary to store them with the original data in DNA.
This commit moves them to `ObjectRuntime` and moves the matrices to
use the C++ `float4x4` type, giving the potential for simplified code
using the C++ abstractions. The matrices are accessible with functions
on `Object` directly since they are used so commonly. Though for write
access, directly using the runtime struct is necessary.
The inverse `world_to_object` matrix is often calculated before it's
used, even though it's calculated as part of depsgraph evaluation.
Long term we might not want to store this in `ObjectRuntime` at all,
and just calculate it on demand. Or at least we should remove the
redundant calculations. That should be done separately though.
Pull Request: https://projects.blender.org/blender/blender/pulls/118210
Overall the transition to C++ in the draw module is awkwardly half
complete, but moving more code to a C++ namespace makes cleaning up
this code in other ways much easier, and the next C++ cleanup steps
are clear anyway.
NDEBUG is part of the C standard and disables asserts. Only this will
now be used to decide if asserts are enabled.
DEBUG was a Blender specific define, that has now been removed.
_DEBUG is a Visual Studio define for builds in Debug configuration.
Blender defines this for all platforms. This is still used in a few
places in the draw code, and in external libraries Bullet and Mantaflow.
Pull Request: https://projects.blender.org/blender/blender/pulls/115774
