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Since splitting the depth and the color shader in the image engine the
backdrop wasn't visible anymore. The reson is that the min max uv
coordinates were never working for the node editor backdrop that uses
its own coordinate space.
This partial fix will ignore the depth test when drawing the color part
of the backdrop. This will still have artifacts that are visible when
showing other options as RGBA.
Proper fix would be to calculate the the uv vbo in uv space and not in
image space.
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Can also happen in other places when the overlay engine is active. Some
parts of the overlay engine uses builtin shaders, but disable the color
space conversion to the target texture.
Currently there the overlay engine has its own set of libraries it could
include and defined a macro to pass-throught the color space conversion.
The library include mechanism currently fails when it couldn't find the
builtin library in the libraries of the overlay engine. This only
happened in debug mode.
This change will not fail, but warns the developer if a library could
not be included. In the future this should be replaced by a different
mechanism that can disable the builtin library. See {T95382}.
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Use the input depth texture to determine if the color of the texture
should be shown.
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When an image buffer cannot be read the checkerboard should not be
drawn.
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Empty (UDIM) tiles where drawn with a transparency checkerboard. They
should be rendered with a border background. The cause is that the image
engine would select a single area that contained all tiles and draw them
as being part of an image.
The fix is to separate the color and depth part of the image engine
shader and only draw the depths of tiles that are enabled.
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This change removes an unused shader parameter that also collided when a
local varialble with the same name was used on different platforms.
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Ported the image engine shaders to use the GPUShaderCreateInfo struct.
No functional changes.
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Parameter was used to still be compatible with the previous drawing mode.
The previous mode isn't available anymore so the parameter can should be
removed.
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After showing the alpha in the image editor the setting was not reset
so all images in the editor showed as being transparent.
This commit fixes this by resetting the flag before updating.
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tile images aren't a special case anymore for the image engine.
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Adding better support for drawing huge images in the image/uv editor. Also solved tearing artifacts.
The approach is that for each image/uv editor a screen space gpu texture is created that only contains
the visible pixels. When zooming or panning the gpu texture is rebuild.
Although the solution isn't memory intensive other parts of blender memory usage scales together with
the image size.
* Due to complexity we didn't implement partial updates when drawing images tiled (wrap repeat).
This could be added, but is complicated as a change in the source could mean many different
changes on the GPU texture. The work around for now is to tag all gpu textures to be dirty when
changes are detected.
Original plan was to have 4 screen space images to support panning without gpu texture creation.
For now we don't see the need to implement it as the solution is already fast. Especially when
GPU memory is shared with CPU ram.
Reviewed By: fclem
Maniphest Tasks: T92525, T92903
Differential Revision: https://developer.blender.org/D13424
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Also minor wording improvements.
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- Fix assert on size.
- Fix void * casting.
- Pass extent by values.
- Add swap function to avoid letting the types copyable.
- Add back the GPUTexture * operator on TextureFromPool.
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Use nullptr, use named parameters, fix deprecated header
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The UBYTE datatype is not supported by the clear fallback. Also fix vector
types headers.
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These are functions that are used by eevee-rewrite which has more strict
const correctness.
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This is too much impractical and offers no real benefit.
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This is not needed anymore with the new dependency system.
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This lead to severe unreported regression, like volume rendering broken
in workbench.
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This uses a light parser / string modification pass to convert
C++ enum declaration syntax to GLSL compatible one.
GLSL having no support for enums, we are forced to convert the
enum values to a series of constant uints.
The parser (not really one by the way), being stupidly simple,
will not change anything to the values and thus make some C++
syntax (like omitting the values) not work.
The string replacement happens on all GLSL files on startup.
I did not measure significant changes in blender startup speed.
There is plans to do all of this at compile time.
We limit the scope of the search to `.h` and `.hh` files to prevent
confusing syntax in `.glsl` files.
There is basic error reporting with file, line and char logging
for easy debuggabiliy.
The requirements to use this enum sharing system are already listed in
`gpu_shader_shared_utils.h` and repeated on top of the preprocessor
function.
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Also adds a few things to GPUShader for easily create shaders.
Heavy usage of macros to compose the createInfo and avoid
duplications and copy paste bugs.
This makes the link between the shader request functions
(in workbench_shader.cc) and the actual createInfo a bit
obscure since the names are composed and not searchable.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D13910
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This is to be able to turn off the extension usage on demand.
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In order to use a workaround builtin uniform, we need to count it
just like other uniforms and give it some space in the name buffer.
This also fixes extensions being added after the uniform declaration.
All `#extension` directives are now part of the gl backend.
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With (center) position, radius and random value outputs.
Eevee does not yet support rendering point clouds, but an untested
implementation of this node was added for when it does.
Ref T92573
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This patch migrates the draw manager hair refine compute shader to use
GPUShaderCreateInfo.
Reviewed By: fclem
Differential Revision: https://developer.blender.org/D13915
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The evaluated mesh is a result of evaluated modifiers, and referencing
other evaluated IDs such as materials.
It can not be stored in the EditMesh structure which is intended to be
re-used by many areas. Such sharing was causing ownership errors causing
bugs like
T93855: Cycles crash with edit mode and simultaneous viewport and final render
The proposed solution is to store the evaluated edit mesh and its cage in
the object's runtime field. The motivation goes as following:
- It allows to avoid ownership problems like the ones in the linked report.
- Object level is chosen over mesh level is because the evaluated mesh
is affected by modifiers, which are on the object level.
This patch allows to have modifier stack of an object which shares mesh with
an object which is in edit mode to be properly taken into account (before
the change the modifier stack from the active object will be used for all
objects which share the mesh).
There is a change in the way how copy-on-write is handled in the edit mode to
allow proper state update when changing active scene (or having two windows
with different scenes). Previously, the copt-on-write would have been ignored
by skipping tagging CoW component. Now it is ignored from within the CoW
operation callback. This allows to update edit pointers for objects which are
not from the current depsgraph and where the edit_mesh was never assigned in
the case when the depsgraph was evaluated prior the active depsgraph.
There is no user level changes changes expected with the CoW handling changes:
should not affect on neither performance, nor memory consumption.
Tested scenarios:
- Various modifiers configurations of objects sharing mesh and be part of the
same scene.
- Steps from the reports: T93855, T82952, T77359
This also fixes T76609, T72733 and perhaps other reports.
Differential Revision: https://developer.blender.org/D13824
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4400 and 4600
Fixes T93680
For current drivers of Intel HD Graphics 4400 and 4600, various Program Introspection functions appear broken and return incorrect values, causing crashes in the current handling of SSBOs. Disable use of this feature on those devices. Add checks to features that use SSBOs (Hair and Subdivision Modifier).
Reviewed By: fclem, jbakker
Maniphest Tasks: T93680
Differential Revision: https://developer.blender.org/D13806
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The point IBO should only have data for coarse vertices (or in general,
the vertices in the original mesh). As it used for displaying the
vertices for selection in edit mode, and as it indexes into the VBOs for
the positions and edit data, it is itself only indexed by coarse/
original vertex index.
For the subdivision case, this would allocate space for the final
subdivision vertex and reallocate to make room for loose geometry,
although only the first coarse vertex count amount of data would be.
Now just allocate for the required memory. Also reuse index buffer APIs
instead of doing manual work.
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Custom bones are drawn by instancing the GPUBatch of the base object. To
access the mesh and its GPUBatch, `BKE_object_get_evaluated_mesh` was
used. However, since GPU subdivision support, this will return a
subdivision wrapper which will never be drawn, and thus will have an
invalid batch, which caused the crash.
`BKE_object_get_evaluated_mesh_no_subsurf` should be used instead, to
return the mesh that will be drawn, and have the subdivision evaluated
on the GPU. Note that the rest of the draw code is already using this
function.
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This adds vertex creasing support for OpenSubDiv for modeling, rendering,
Alembic and USD I/O.
For modeling, vertex creasing follows the edge creasing implementation with an
operator accessible through the Vertex menu in Edit Mode, and some parameter in
the properties panel. The option in the Subsurf and Multires to use edge
creasing also affects vertex creasing.
The vertex crease data is stored as a CustomData layer, unlike edge creases
which for now are stored in `MEdge`, but will in the future also be moved to
a `CustomData` layer. See comments for details on the difference in behavior
for the `CD_CREASE` layer between egdes and vertices.
For Cycles this adds sockets on the Mesh node to hold data about which vertices
are creased (one socket for the indices, one for the weigths).
Viewport rendering of vertex creasing reuses the same color scheme as for edges
and creased vertices are drawn bigger than uncreased vertices.
For Alembic and USD, vertex crease support follows the edge crease
implementation, they are always read, but only exported if a `Subsurf` modifier
is present on the Mesh.
Reviewed By: brecht, fclem, sergey, sybren, campbellbarton
Differential Revision: https://developer.blender.org/D10145
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This reverts commit edee5a947b7ea3e1324aa334a22c7c9bbf47f5f7.
Fixes compilation error (Missing file BLI_float2.hh)
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This reverts commit 8fb2ff458ba579dba08bfdf57d043ad158b5db07.
Missing some files.
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This is a first part of the Shader Create Info system could be.
A shader create info provides a way to define shader structure, resources
and interfaces. This makes for a quick way to provide backend agnostic
binding informations while also making shader variations easy to declare.
- Clear source input (only one file). Cleans up the GPU api since we can create a
shader from one descriptor
- Resources and interfaces are generated by the backend (much simpler than parsing).
- Bindings are explicit from position in the array.
- GPUShaderInterface becomes a trivial translation of enums and string copy.
- No external dependency to third party lib.
- Cleaner code, less fragmentation of resources in several libs.
- Easy to modify / extend at runtime.
- no parser involve, very easy to code.
- Does not hold any data, can be static and kept on disc.
- Could hold precompiled bytecode for static shaders.
This also includes a new global dependency system.
GLSL shaders can include other sources by using #pragma BLENDER_REQUIRE(...).
This patch already migrated several builtin shaders. Other shaders should be migrated
one at a time, and could be done inside master.
There is a new compile directive `WITH_GPU_SHADER_BUILDER` this is an optional
directive for linting shaders to increase turn around time.
What is remaining:
- pyGPU API {T94975}
- Migration of other shaders. This could be a community effort.
Reviewed By: jbakker
Maniphest Tasks: T94975
Differential Revision: https://developer.blender.org/D13360
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The crash is due to the fact that GPU subdivision extraction routines
for edit data (including UVs) only worked for BMesh. However, a Mesh
based version is still needed for texture painting. This adds the
missing components. This also ensures all data are properly initialized
(at least the ones revealed by the bug).
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This puts the loop over the final subdivision quads outside of the mesh
iteration callback. This can also allow for easier parallel execution in
the future if need be.
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The resolution for the subdivision grid traversal was always based on
the viewport setting.
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Also ensure space at end of comment.
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As described in T91186, this commit moves mesh vertex normals into a
contiguous array of float vectors in a custom data layer, how face
normals are currently stored.
The main interface is documented in `BKE_mesh.h`. Vertex and face
normals are now calculated on-demand and cached, retrieved with an
"ensure" function. Since the logical state of a mesh is now "has
normals when necessary", they can be retrieved from a `const` mesh.
The goal is to use on-demand calculation for all derived data, but
leave room for eager calculation for performance purposes (modifier
evaluation is threaded, but viewport data generation is not).
**Benefits**
This moves us closer to a SoA approach rather than the current AoS
paradigm. Accessing a contiguous `float3` is much more efficient than
retrieving data from a larger struct. The memory requirements for
accessing only normals or vertex locations are smaller, and at the
cost of more memory usage for just normals, they now don't have to
be converted between float and short, which also simplifies code
In the future, the remaining items can be removed from `MVert`,
leaving only `float3`, which has similar benefits (see T93602).
Removing the combination of derived and original data makes it
conceptually simpler to only calculate normals when necessary.
This is especially important now that we have more opportunities
for temporary meshes in geometry nodes.
**Performance**
In addition to the theoretical future performance improvements by
making `MVert == float3`, I've done some basic performance testing
on this patch directly. The data is fairly rough, but it gives an idea
about where things stand generally.
- Mesh line primitive 4m Verts: 1.16x faster (36 -> 31 ms),
showing that accessing just `MVert` is now more efficient.
- Spring Splash Screen: 1.03-1.06 -> 1.06-1.11 FPS, a very slight
change that at least shows there is no regression.
- Sprite Fright Snail Smoosh: 3.30-3.40 -> 3.42-3.50 FPS, a small
but observable speedup.
- Set Position Node with Scaled Normal: 1.36x faster (53 -> 39 ms),
shows that using normals in geometry nodes is faster.
- Normal Calculation 1.6m Vert Cube: 1.19x faster (25 -> 21 ms),
shows that calculating normals is slightly faster now.
- File Size of 1.6m Vert Cube: 1.03x smaller (214.7 -> 208.4 MB),
Normals are not saved in files, which can help with large meshes.
As for memory usage, it may be slightly more in some cases, but
I didn't observe any difference in the production files I tested.
**Tests**
Some modifiers and cycles test results need to be updated with this
commit, for two reasons:
- The subdivision surface modifier is not responsible for calculating
normals anymore. In master, the modifier creates different normals
than the result of the `Mesh` normal calculation, so this is a bug
fix.
- There are small differences in the results of some modifiers that
use normals because they are not converted to and from `short`
anymore.
**Future improvements**
- Remove `ModifierTypeInfo::dependsOnNormals`. Code in each modifier
already retrieves normals if they are needed anyway.
- Copy normals as part of a better CoW system for attributes.
- Make more areas use lazy instead of eager normal calculation.
- Remove `BKE_mesh_normals_tag_dirty` in more places since that is
now the default state of a new mesh.
- Possibly apply a similar change to derived face corner normals.
Differential Revision: https://developer.blender.org/D12770
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