This PR implements debug groups in the render graph. Each node contains
a reference to the debug group they belong to. During scheduling the
nodes can be reordered and the correct debug group needs to be
activated.
This is done by keeping track of the current debug group. When a
different debug group is needed, the needed ends/begins are added
to the command buffer.
This mechanism also cleans up debug groups that are not used at all
as they don't have any nodes associated to it.
Pull Request: https://projects.blender.org/blender/blender/pulls/122054
Previously the VKShaderInterface was constructed twice. This was
due to a limitation of the Shader api. Specialization constants
introduced an Shader::init function which allows to pre-initialize
the shader interface before a shader is finalized.
Pull Request: https://projects.blender.org/blender/blender/pulls/122049
Jittered Soft Shadows support.
Improves soft shadow quality at the cost of re-rendering shadow maps every sample.
Disabled by default in the viewport unless enabled in the Scene settings.
| Tracing-only | Jitter-only | Jitter+Over-blur |
| --- | --- | --- |
|  |  |  |
Tracing-only is the method used by default in EEVEE-Next.
Jitter-only is the method used by EEVEE-Legacy Soft Shadows.
Jitter+Over-blur combines both.
Co-authored by Miguel Pozo @pragma37 (initial patch #119753)
Pull Request: https://projects.blender.org/blender/blender/pulls/121836
Remove both compute barriers and useResource calls
as explicit resources bound via setTexture and
setComputeBuffer are implicitly tracked by the Metal
API anyway, so these calls increase complexity, without
altering correctness
Authored by Apple: Michael Parkin-White
Pull Request: https://projects.blender.org/blender/blender/pulls/121598
Move ownership of image views to VKTexture. VKFramebuffer can request
access to the image views. This allows reconfiguring framebuffers when
the previous configuration is still in use by the render graph.
Pull Request: https://projects.blender.org/blender/blender/pulls/121727
This fixes several issues with push constants.
Push constants test were failing due to setting incorrect parameters.
The pipeline stage was used as if it was a shader stage.
When using push constants fallback the uniform was loaded to the
descriptor set after the descriptor set was checked.
Suppress updating push constants of non render graph, when render
graph is active.
Pull Request: https://projects.blender.org/blender/blender/pulls/121772
Compute tests were failing due to recent changes.
* Incorrect image layout was used for writable image bindings.
* Incorrect pipeline stage was used for indirect command buffers.
Pull Request: https://projects.blender.org/blender/blender/pulls/121744
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
Overlay engine extra layer can record draw list commands with an
empty index buffer. This would not affect any pixels and should be
ignored.
Issue detected when vulkan validation layers are turned on and loading
default scene.
Pull Request: https://projects.blender.org/blender/blender/pulls/121736
There is an implementation flaw in the render graph where local pointers
cannot be updated, but the data it refers to can be reallocated to
another location.
The cause of this is that the nodes use an union, which can only contain
simple constructed structs (eg memcpy). this union is stored in a vector
and can relocate the union. Any local pointers can (and will) become
invalid.
This PR is a quick fix by updating the pointers just before sending
them to the command buffer. In future a better fox needs to be done
as part of #121649.
Pull Request: https://projects.blender.org/blender/blender/pulls/121723
The render graph tests initialized a command buffer wrapper that
requires a working device. The wrapper was not used, but when
destructing it would try to deallocate the command buffer, which
cannot be done as that requires a working device as well.
This PR removes the unneeded command buffer wrappers in the test
cases.
Overlay texts were previously drawn with two sets of shadows:
- 3px blur,
- 5px blur, slightly offset
But since the shadow color was always set to black, it was still
causing legibility issues when the text itself was dark (set
via theme for example).
This PR adds a new "outline" BLF text decoration, and uses that
for the overlays. And it picks text/outline color depending
on the "background" color of the view.
Details:
- Instead of "shadow level" integer where the only valid options
are 0, 3 or 5, have a FontShadowType enum.
- Add a new FontShadowType::Outline enum entry, that does a 1px
outline by doing a 3x3 dilation in the font shader.
- BLF_draw_default_shadowed is changed to do outline, instead of
drawing the shadow twice.
- In the font shader, instead of encoding shadow type in signs of
the glyph_size, pass that as a "flags" vertex attribute. Put
font texture channel count into the same flags, so that the
vertex size stays the same.
- Well actually, vertex size becomes smaller by 4 bytes, since turns
out glyph_mode vertex attribute was not used for anything at all.
Images in the PR.
Co-authored-by: Harley Acheson <harley.acheson@gmail.com>
Pull Request: https://projects.blender.org/blender/blender/pulls/121383
Result isn't consistent on Windows platform due to copying structs with arrays.
This is a quick fix and will be looked at next week. The code isn't used at this moment.
Pull Request: https://projects.blender.org/blender/blender/pulls/121670
Adds support for clear attachments to the render graph.
Clearing attachments require that the command buffer is
being set for rendering (vkCmdBeginRendering).
**What works**
- Clear attachments are working with dynamic rendering and the render graph
- `GPUVulkanTest.framebuffer_clear_color_single_attachment`
- `GPUVulkanTest.framebuffer_clear_color_multiple_attachments`
- `GPUVulkanTest.framebuffer_clear_multiple_color_multiple_attachments`
- `GPUVulkanTest.framebuffer_scissor_test`
- `GPUVulkanTest.framebuffer_clear_depth`
**What still needs to be addressed**
When a command buffer is rendering it cannot do any pipeline
barriers. For clearing attachments this isn't needed, but when
we address drawing we might need to register drawing resource
dependencies to the dependency list of the begin rendering node.
This will be solved when drawing will be implemented. [#121648]
The begin rendering node is large as it has to store data for
framebuffers with 8 color attachments as well. This might
become an overhead and we could solve this by splicing the
data of larger nodes into 2 lists. This will be addressed
after we are able to draw a screen so we can collect data
on this topic. [#121649]
Pull Request: https://projects.blender.org/blender/blender/pulls/121073
Currently the image layout was fixed when creating pipeline barriers.
This PR determined the image layout an image is in based on its access
mask.
This extends the usage of the render graph and its pipeline barrier
generation for render attachments. In future it can be extended to
support other layouts.
Pull Request: https://projects.blender.org/blender/blender/pulls/121646
In the near future the legacy framebuffer/renderpass/pipeline drawing
will be replaced by dynamic rendering. Dynamic rendering provide a
flexible API to reuse pipelines between framebuffers if they share
the same image formats.
Dynamic rendering is provided by `VK_KHR_dynamic_rendering` extension
and is supported by all platforms we support (Intel since HD4000, NVIDIA
since 700, AMD since GCN2 and llvmpipe).
Functions provided by extensions are loaded in a struct inside
`VKDevice`.
Pull Request: https://projects.blender.org/blender/blender/pulls/121642
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
Multiple generations of Intel GPU have the same issue where multi
texture binding results in invalid operations where the driver
reports that the internal texture format isn't supported.
Previously this was only enabled for UHD devices, but this PR
enables it for any Intel GPU. It was detected to be faulty on
UHD600 and Iris.
Pull Request: https://projects.blender.org/blender/blender/pulls/121479
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.
This is an implementation of thin film iridescence in the Principled BSDF based on "A Practical Extension to Microfacet Theory for the Modeling of Varying Iridescence".
There are still several open topics that are left for future work:
- Currently, the thin film only affects dielectric Fresnel, not metallic. Properly specifying thin films on metals requires a proper conductive Fresnel term with complex IOR inputs, any attempt of trying to hack it into the F82 model we currently use for the Principled BSDF is fundamentally flawed. In the future, we'll add a node for proper conductive Fresnel, including thin films.
- The F0/F90 control is not very elegantly implemented right now. It fundamentally works, but enabling thin film while using a Specular Tint causes a jump in appearance since the models integrate it differently. Then again, thin film interference is a physical effect, so of course a non-physical tweak doesn't play nicely with it.
- The white point handling is currently quite crude. In short: The code computes XYZ values of the reflectance spectrum, but we'd need the XYZ values of the product of the reflectance spectrum and the neutral illuminant of the working color space. Currently, this is addressed by just dividing by the XYZ values of the illuminant, but it would be better to do a proper chromatic adaptation transform or to use the proper reference curves for the working space instead of the XYZ curves from the paper.
Pull Request: https://projects.blender.org/blender/blender/pulls/118477
This was caused by the 2 transmission event approximation we
do for object with non-null thickness. This follows cycles
by using the square root of the color.
Resolves offset error when building index buffers on device for
cuves/hair strips using Triangles instead of TriangleStrips.
Authored by Apple: Michael Parkin-White
Pull Request: https://projects.blender.org/blender/blender/pulls/121218
On windows the OpenGL backend of the UHD630 driver (but could also be other
GPUs that use the same driver) reports of supporting `GL_ARB_multi_bind`.
But when enabling it can result in incorrect bindings and report errors
about unsupported internal texture formats. These are internal driver issues.
Might also fix#107642 as it shows the same error message. EEVEE-Next
relies more on using the same binding slot for the same texture in order
to reduce actual bindings which makes this more prominent.
Pull Request: https://projects.blender.org/blender/blender/pulls/121062
Transport rays that enter to another location in the scene, with
specified ray position and normal. This may be used to render portals
for visual effects, and other production rendering tricks.
This acts much like a Transparent BSDF. Render passes are passed
through, and this is affected by light path max transparent bounces.
Pull Request: https://projects.blender.org/blender/blender/pulls/114386
Clamp some of the inputs of the Glossy BSDF, Glass BSDF, Sheen BSDF,
and Subsurface Scattering nodes to improve consistency between render
engines and to avoid unexpected results.
* Clamp roughness to 0..1
* Clamp subsurface radius to 0..inf
* Clamp colors to 0..inf
Pull Request: https://projects.blender.org/blender/blender/pulls/120390
This adds a new `Transform` type similar to cycles that reduces
the amount of data passed for a typical affine 3D transform.
This then applies this type to the light data and cleanup
all usage of the former `object_mat`. This also changes the axes
macros into utility accessor functions.
Pull Request: https://projects.blender.org/blender/blender/pulls/121089
Add dispatch indirect node. Also refactored the dispatch (direct) node
so more logic could be reused. The context only stores a `VKResourceAccessInfo`
struct which is reused by both the dispatch and dispatch indirect node.
Pull Request: https://projects.blender.org/blender/blender/pulls/120993
