Reference identifiers instead of "above" in code comments as these
tends to become outdated. Even when declarations are removed it's at
least clear that the reference no longer exists instead of referring to
whatever is currently above the declaration.
It's also straightforward to search history for a removed identifier.
Corrected 4 cases of references to things that were no longer above
the doc-strings. Noticed other references which look to be incorrect
but need further investigation.
Update the batch specializations compilation to allow using it in an
async way.
The implementation has 2 main limitations:
- Only one batch at a time can be processed, extra batches will be
added to a queue.
- Binding a specialization variant that is still being compiled will fail.
Pull Request: https://projects.blender.org/blender/blender/pulls/123015
This implement the holdout flag by switching to
the holdout case in the shader. This has a few benefits:
- Doesn't recompile the shaders.
- Makes the object infos mandatory (already the case in
practice)
- Handle transparent materials properly, keeping the
transparency working.
Fix#123284
Pull Request: https://projects.blender.org/blender/blender/pulls/123315
Allow precompiling specialization constants variations in parallel.
Only supported in OpenGL as the rest of the batch compilation API,
on the other backends the function is a no-op.
This also moves the `SpecializationConstant` from
`gpu_shader_create_info` (private API) into`GPU_common_types`
(public API).
Pull Request: https://projects.blender.org/blender/blender/pulls/122796
This is the first commit of the several required to support
subprocess-based parallel compilation on OpenGL.
This provides the base API and implementation, and exposes the max
subprocesses setting on the UI, but it's not used by any code yet.
More information and the rest of the code can be found in #121925.
This one includes:
- A new `GPU_shader_batch` API that allows requesting the compilation
of multiple shaders at once, allowing GPU backed to compile them in
parallel and asynchronously without blocking the Blender UI.
- A virtual `ShaderCompiler` class that backends can use to add their
own implementation.
- A `ShaderCompilerGeneric` class that implements synchronous/blocking
compilation of batches for backends that don't have their own
implementation yet.
- A `GLShaderCompiler` that supports parallel compilation using
subprocesses.
- A new `BLI_subprocess` API, including IPC (required for the
`GLShaderCompiler` implementation).
- The implementation of the subprocess program in
`GPU_compilation_subprocess`.
- A new `Max Shader Compilation Subprocesses` option in
`Preferences > System > Memory & Limits` to enable parallel shader
compilation and the max number of subprocesses to allocate (each
subprocess has a relatively high memory footprint).
Implementation Overview:
There's a single `GLShaderCompiler` shared by all OpenGL contexts.
This class stores a pool of up to `GCaps.max_parallel_compilations`
subprocesses that can be used for compilation.
Each subprocess has a shared memory pool used for sending the shader
source code from the main Blender process and for receiving the already
compiled shader binary from the subprocess. This is synchronized using
a series of shared semaphores.
The subprocesses maintain a shader cache on disk inside a
`BLENDER_SHADER_CACHE` folder at the OS temporary folder.
Shaders that fail to compile are tried to be compiled again locally for
proper error reports.
Hanged subprocesses are currently detected using a timeout of 30s.
Pull Request: https://projects.blender.org/blender/blender/pulls/122232
VSE timeline strips now have rounded corners. Strip corner rounding radius is
4, 6 or 8px depending on strip height (if strip is too narrow to fit
rounding, then rounding is turned off).
This is achieved with a dedicated GPU shader for drawing most of VSE
strip widget, that it could do proper rounded corner masking.
More details and images in the PR.
Pull Request: https://projects.blender.org/blender/blender/pulls/122576
This handles the transition to EEVEE-Next (now EEVEE).
This removes some things that make no sense to keep
even for compatibility.
- Scene.eevee.light_cache_data
- Scene Light cache operators
- Scene Light cache RNA properties
The remaining legacy properties will be removed later
on to avoid python API breakage.
We keep the identifier of EEVEE-Next as `BLENDER_EEVEE_NEXT`
to avoid addons being incorrectly silently made compatible
with the EEVEE-Next where the Python API is different.
This renaming should be done in 5.0 release.
Thank you EEVEE-Legacy, you served us well.
Pull Request: https://projects.blender.org/blender/blender/pulls/122433
The setting adds the "Custom Shape Wire Width"
option to the "Viewport Display/Custom Shape" section of a pose bone.
As the setting says, this controls how thick the wire is drawn in the viewport.
This is done by adding a geometry shader that makes two triangles out of a line.
The Anti-Aliasing is controlled by the setting
Viewport->Quality->Smooth Wires->Overlay in the user preferences.
## Artifacts
When increasing the line width, the lines start to separate at their vertices.
This comes from extruding each edge along the normal of its direction.
This could be solved by adding round caps in a later PR.
Pull Request: https://projects.blender.org/blender/blender/pulls/120176
The mesh triangulation data is stored in CPU memory with the same format
as the triangles GPU index buffer. Because of that we can skip creating a
temporary copied owned by the GPU API. One way to do that is to just
upload the data directly and avoid keeping a reference to it. However, we
can only upload GPU data from the main thread with OpenGL, so instead
reference the data and keep track of whether to free it.
When drawing a mesh with a single material and 1.8 million faces, this
change gives a 12-15% improvement in framerate, from about 32 to 37 FPS.
Part of #116901.
Pull Request: https://projects.blender.org/blender/blender/pulls/122175
A continuation of #116901. This one doesn't have a performance impact
in my testing. It also adds a bit more code compared to main so it isn't
really obviously "better" like the previous refactors. However it does
get us closer to removing the "extractors" callback iteration loop
(`edit_data` is the only other enabled by default), and I'd argue that
the final code is easier to iterate on in the future since it's more
self-contained.
I made an effort to avoid storing restart indices in the index buffers.
Though this requires a bit more calculation on the CPU (particularly
because the hidden gaps in the IBO need to be compressed out), it
reduces overall CPU->GPU traffic and removes the need to strip the
restart indices on Metal.
Pull Request: https://projects.blender.org/blender/blender/pulls/122084
Move all header file into namespace.
Unnecessary namespaces was removed from implementations file.
Part of forward declarations in header was moved in the top part
of file just to do not have a lot of separate namespaces.
Pull Request: https://projects.blender.org/blender/blender/pulls/121637
Disabling tile_copy method for shadow update for
stability in scenes with large geometry counts
which may exceed parameter buffer size.
This pass can be re-used in future if the workload
distribution for shadow updates is changed to
better suit this method.
Authored by Apple: Michael Parkin-White
Pull Request: https://projects.blender.org/blender/blender/pulls/121623
Advanced ID copying code can now take a `new_owner_id` ID pointer parameter,
and use it to set the relevant 'loopback' pointer to its owner ID by the
copy code itself.
Besides avoiding the need for all code copying embedded IDs to set the
loopback pointer themselves, this also means that `lib_id` copying code
itself does not need to use `IDWALK_IGNORE_MISSING_OWNER_ID` anymore.
This change is not expected to have any effect in current codebase.
Blender expects that only the filename is provided which is true
for internal shader sources.
Metal shaders can error and return a full path to a system shader.
This doesn't fit inside the reserved memory that Blender reserved
for logging filename and line number.
This out of bound write can be triggered when using `min`
where the parameters aren't of the same kind.
`uint min(uint, int)` for example.
This PR reserves more space to store the filename.
Pull Request: https://projects.blender.org/blender/blender/pulls/120967
Due to an error in the hash function the specialization constants hash
wasn't optimal. This PR fixes the hash function implementation by replacing
the addition with an xor.
Pull Request: https://projects.blender.org/blender/blender/pulls/120964
Compute shaders are required since 4.0. There was one occasion where
an older AMD driver failed and support was turned off. This driver
is now marked unsupported.
This PR includes:
- removing the check in viewport compositing
- remove properties from system info
- always construct draw manager.
- remove unused pass logic in draw hair/curves
- add deprecation warning when accessed from python
Pull Request: https://projects.blender.org/blender/blender/pulls/120909
The specialization constant default hash was implemented in gl_shader.hh
But the same implementation is needed for vulkan. This PR moves the
default hash to a common place where both backends can use it.
Pull Request: https://projects.blender.org/blender/blender/pulls/120889
This PR adds a context function to consider all
buffer bindings obsolete. This is in order to
track missing binds and invalid lingering states
accross `draw::Pass`es.
The functions `GPU_storagebuf_debug_unbind_all`
and `GPU_uniformbuf_debug_unbind_all` do nothing
more than resetting the internal debug slot bits
to zero. This is what OpenGL backend does as it
doesn't track the bindings themselves.
Other backends might have other way to detect
missing bindings. If not they should be
implemented separately anyway.
I renamed the function to `debug_unbind_all` to
denote that it actually does something related to
debugging.
This also add SSBO binding check for OpenGL as it
was also missing.
#### Future
This error checking logic is pretty much backend
agnostic. While it would be nice to move it at
`gpu::Context` level, we don't have the resources
for that now.
Pull Request: https://projects.blender.org/blender/blender/pulls/120716
Adds support for subpass transition for AMD/Intel IMR
GPUs. This enables correct functioning of EEVEE Next
deferred lighting pass on AMD platforms.
The emulation is consistent with the OpenGL approach
of generating additional texture bindings in the shader
for subpass inputs, and splitting render passes across
sub-pass boundaries.
Authored by Apple: Michael Parkin-White
Pull Request: https://projects.blender.org/blender/blender/pulls/119784
This PR is another step in the refactor described by #116901.
This change applies to the triangle index buffer. The main improvement
is the ability to recognize when the mesh corner triangles index array
can be uploaded directly (when there is a single material and no hidden
faces). In that case the index data should be copied directly to the
GPU rather than to a temporary array owned by the IBO first. Though
that isn't implemented yet since it will be handled by the GPU module
later, the code is now structured to make that change simple from the
data extraction perspective.
Other than that, the main change is to not use the extractor iterator
framework anymore, and to set index data directly instead of using GPU
API functions. Though we're mainly bottlenecked by memory-bandwidth
anyway, it's nice to avoid function call overhead.
We also now avoid creating the array of sorted triangle indices when
there is a single material and no hidden faces. And we don't use
restart indices for the single-material case anymore. For Metal that's
nice because we can avoid `strip_restart_indices`.
I didn't notice significant performance improvements in my test files
beyond a few percent here and there. With a hacked implementation of
the copy-directly-to-the-gpu optimization, I did see more consistent
improvements though.
Pull Request: https://projects.blender.org/blender/blender/pulls/119130
Tune Metal compilation parameters for horizon scan
shaders for optimal performance. Selectively unrolling
loops and modifying compilation heuristics results in a
~25% uplift in tracing shader performance, due to
improved latency management.
Authored by Apple: Michael Parkin-White
Pull Request: https://projects.blender.org/blender/blender/pulls/119737
For Batch::verts some values weren't cleared,
for Batch::inst values after the array would be cleared,
although as these were already zeroed this probably didn't cause
problems in practice.
Now that all relevant code is C++, the indirection from the C struct
`GPUVertBuf` to the C++ `blender::gpu::VertBuf` class just adds
complexity and necessitates a wrapper API, making more cleanups like
use of RAII or other C++ types more difficult.
This commit replaces the C wrapper structs with direct use of the
vertex and index buffer base classes. In C++ we can choose which parts
of a class are private, so we don't risk exposing too many
implementation details here.
Pull Request: https://projects.blender.org/blender/blender/pulls/119825
When frame capturing cannot be start an error is printed to the console.
Most of the time the issue is that you're not running from within a frame
capturing environment. For example not from your IDE/GPU debugger.
The print statement is often just not that useful. Especially when
running the `WITH_GPU_DRAW_TESTS` where it floods the console.
Pull Request: https://projects.blender.org/blender/blender/pulls/119783
This implement the design of #118961.
- Add aliases in GLSL since theses types are
not supported.
- Add detection mechanism that prevents usage
inside shader shared code.
Check is only done in debug build to avoid slowing down
application startup.
Pull Request: https://projects.blender.org/blender/blender/pulls/119226
This patch adds the maximum number of supported image units to the GPU
capabilities module. Currently, the GPU module assume a maximum of 8
units, so the patch is not currently particularly useful, but we can
consider committing it for the future anyways.
Pull Request: https://projects.blender.org/blender/blender/pulls/119057
