With the new `attrs_info_get` method, we can get information about
the attributes used in a `GPUShader` and thus have more freedom in the
automatic creation of `GPUVertFormat`s
Reviewed By: fclem, campbellbarton
Differential Revision: https://developer.blender.org/D15764
Push the const usage a bit further for compositor nodes, so that they
are more explicit about not modifying original nodes from the editor.
Differential Revision: https://developer.blender.org/D15822
This patch moves material indices from the mesh `MPoly` struct to a
generic integer attribute. The builtin material index was already
exposed in geometry nodes, but this makes it a "proper" attribute
accessible with Python and visible in the "Attributes" panel.
The goals of the refactor are code simplification and memory and
performance improvements, mainly because the attribute doesn't have
to be stored and processed if there are no materials. However, until
4.0, material indices will still be read and written in the old
format, meaning there may be a temporary increase in memory usage.
Further notes:
* Completely removing the `MPoly.mat_nr` after 4.0 may require
changes to DNA or introducing a new `MPoly` type.
* Geometry nodes regression tests didn't look at material indices,
so the change reveals a bug in the realize instances node that I fixed.
* Access to material indices from the RNA `MeshPolygon` type is slower
with this patch. The `material_index` attribute can be used instead.
* Cycles is changed to read from the attribute instead.
* BMesh isn't changed in this patch. Theoretically it could be though,
to save 2 bytes per face when less than two materials are used.
* Eventually we could use a 16 bit integer attribute type instead.
Ref T95967
Differential Revision: https://developer.blender.org/D15675
This checks for the availability of `gl_BaseInstanceARB` or equivalent.
Disabling for any workaround that disables shader_image_load_store_support
as a preventive measure.
This allows the render engine to expect non-overlapping resources in the
generated create info.
Textures are indexed from 0 and up.
Nodetree ubo is bound to slot 0.
Uniform attributes ubo is bound to slot 1.
The number of attribute domains isn't an attribute domain, so storing
ATTR_DOMAIN_NUM in a variable with an eAttrDomain type isn't correct.
In the cases it was used, the value wouldn't be accessed anyway.
There was a memory leak in the GPU code generator for the compositor
output. It was just due to a missing free in the GPU code generator
destructor, so this patch makes sure it is freed.
With libepoxy we can choose between EGL and GLX at runtime, as well as
dynamically open EGL and GLX libraries without linking to them.
This will make it possible to build with Wayland, EGL, GLVND support while
still running on systems that only have X11, GLX and libGL. It also paves
the way for headless rendering through EGL.
libepoxy is a new library dependency, and is included in the precompiled
libraries. GLEW is no longer a dependency, and WITH_SYSTEM_GLEW was removed.
Includes contributions by Brecht Van Lommel, Ray Molenkamp, Campbell Barton
and Sergey Sharybin.
Ref T76428
Differential Revision: https://developer.blender.org/D15291
This commit moves the hide status of mesh vertices, edges, and faces
from the `ME_FLAG` to optional generic boolean attributes. Storing this
data as generic attributes can significantly simplify and improve code,
as described in T95965.
The attributes are called `.hide_vert`, `.hide_edge`, and `.hide_poly`,
using the attribute name semantics discussed in T97452. The `.` prefix
means they are "UI attributes", so they still contain original data
edited by users, but they aren't meant to be accessed procedurally by
the user in arbitrary situations. They are also be hidden in the
spreadsheet and the attribute list by default,
Until 4.0, the attributes are still written to and read from the mesh
in the old way, so neither forward nor backward compatibility are
affected. This means memory requirements will be increased by one byte
per element when the hide status is used. When the flags are removed
completely, requirements will decrease when hiding is unused.
Further notes:
* Some code can be further simplified to skip some processing when the
hide attributes don't exist.
* The data is still stored in flags for `BMesh`, necessitating some
complexity in the conversion to and from `Mesh`.
* Access to the "hide" property of mesh elements in RNA is slower.
The separate boolean arrays should be used where possible.
Ref T95965
Differential Revision: https://developer.blender.org/D14685
This is a complete rewrite of the draw debug drawing module in C++.
It uses `GPUStorageBuf` to store the data to be drawn and use indirect
drawing. This makes it easier to do a mirror API for GPU shaders.
The C++ API class is exposed through `draw_debug.hh` and should be used
when possible in new code.
However, the debug drawing will not work for platform not yet supporting
`GPUStorageBuf`. Also keep in mind that this module must only be used
in debug build for performance and compatibility reasons.
The shader value node always outputs zero in some cases even when its
value is not zero.
This is caused by b639e60864. In that
commit, the behavior of GPU node linking changed such that unlinked
sockets get their value from their associated GPU node stack instead of
the socket itself. But execution node stacks do not always have their
output values initialized, and since the value node stores its value in
its output, it follows that its uniform value will be wrong.
This patch fixes that by getting the value directly from the socket.
This is also done fro the RGBA node, since it is implemented similarly.
Finally, the GPU_uniformbuf_link_out function was removed since it is no
longer used and does not make sense anymore.
Differential Revision: https://developer.blender.org/D15641
Reviewed By: Clement
Add IMB_gpu_get_texture_format and GPU_texture_format_description to
retrieve and 'stringify' an eGPUTextureFormat. These are then used in the
image info panel used in several areas across blender.
New Information:
{F13330937}
Reviewed By: jbakker
Maniphest Tasks: T99998
Differential Revision: https://developer.blender.org/D15575
Instead of passing pointers to specific mesh data, rely on
retrieving that data from the mesh internally. This makes
it easier to support retrieving additional data from Mesh
(like active attribute names in D15101 or D15169). It also makes
the functions simpler conceptually, because they're drawing
a mesh with an acceleration strcture on top.
The BKE_id_attribute_copy_domains_temp call was unnecessary
because the GPU_pbvh_mesh_buffers_update function was only
called when Mesh/PBVH_FACES is used in the first place.
Differential Revision: https://developer.blender.org/D15197
This patch implements the necessary changes to the GPU module that are
needed by the realtime compositor.
A new function GPU_material_from_callbacks was added to construct a GPU
material from a number of callbacks. A callback to construct the
material graph by adding and linking the necessary GPU material nodes.
And the existing code generator callback. This essentially allows the
construction of GPU materials independent of node trees and without the
need to do any node tree localization.
A new composite source output to the code generator was added. This
output contains the serialization of nodes that are tagged with
GPU_NODE_TAG_COMPOSITOR, which are the nodes linked to the newly added
composite output links.
Two new GPU uniform setters were added for int2 and matrix3 types.
Shader create info now supports generated compute sources.
Shaders starting with gpu_shader_compositor are now considered part of
the shader library.
Additionally, two fixes were implemented. First, GPU setter node
de-duplication now appropriately increments the reference count of the
references resources. Second, unlinked sockets now get their value from
their associated GPU node stack instead of the socket itself.
Differential Revision: https://developer.blender.org/D14690
Reviewed By: Clement
Previously there was a special extraction process for "vertex colors"
that copied the color data to the GPU with a special format. Instead,
this patch replaces this with use of the generic attribute extraction.
This reduces the number of code paths, allowing easier optimization
in the future.
To make it possible to use the generic extraction system for attributes
but also assign aliases for use by shaders, some changes are necessary.
First, the GPU material attribute can now store whether it actually refers
to the default color attribute, rather than a specific name. This replaces
the hack to use `CD_MCOL` in the color attribute shader node. Second,
the extraction code checks the names against the default and active
names and assigns aliases if the request corresponds to a special active
attribute. Finally, support for byte color attributes was added to the
generic attribute extraction.
Differential Revision: https://developer.blender.org/D15205
Backend initialization needs to be delayed until after the OpenGL context
is created. This worked fine in foreground mode because the OpenGL context
already exists for the window at the point GPU_backend_init_once was called,
but not for background mode.
Create the backend just in time in GPU_context_create as before, and
automatically free it when the last context id discarded. But check if any
GPU backend is supported before creating the OpenGL context.
Ref D15463, D15465
This causes an assert with libepoxy, but was wrong already regardless.
Refactor logic to work as follows:
* GPU_exit() deletes backend resources
* Destroy UI GPU resources with the context active
* Call GPU_backend_exit() after deleting the context
Ref D15291
Differential Revision: https://developer.blender.org/D15465
When rendering with headless builds, show an error instead of crashing.
Previously GPU_backend_init was called indirectly from
DRW_opengl_context_create, a new function is now called from the window
manager (GPU_backend_init_once), so it's possible to check if the GPU
has a back-end.
This also disables the `bgl` Python module when building WITH_HEADLESS.
Reviewed By: fclem
Ref D15463
The memory manager includes both a GPUContext-local manager which allocates per-context resources such as Circular Scratch Buffers for temporary data such as uniform updates and resource staging, and a GPUContext-global memory manager which features a pooled memory allocator for efficient re-use of resources, to reduce CPU-overhead of frequent memory allocations.
These Memory Managers act as a simple interface for use by other Metal backend modules and to coordinate the lifetime of buffers, to ensure that GPU-resident resources are correctly tracked and freed when no longer in use.
Note: This also contains dependent DIFF changes from D15027, though these will be removed once D15027 lands.
Authored by Apple: Michael Parkin-White
Ref T96261
Reviewed By: fclem
Maniphest Tasks: T96261
Differential Revision: https://developer.blender.org/D15277
This happened because of the false assumption that `std::array<char, 32>`
would be treated as a container and not relocate their content if the
`Vector` would grow. Replacing with actual object allocation fixes the
issue.
Candidate for 3.2.1 corrective release.
