When using multi view only the first layer could be selected as the
rendering info only had a single layer in its main struct.
- Add failsafe for unsupported platforms
This PR implements #126353; In short: keep discard list as part of swap chain images. This allows
better determination when resources are actually not in use anymore.
## Resource pool
Resource pools keep track of the resources for a swap chain image.
In Blender this is a bit more complicated due to the way GPUContext work. A single thread can have
multiple contexts. Some of them have a swap chain (GHOST Window) other don't (draw manager). The
resource pool should be shared between the contexts running on the same thread.
When opening multiple windows there are also multiple swap chains to consider.
### Discard pile
Resource handles that are deleted and stored in the discard pile. When we are sure that these
resources are not used on the GPU anymore these are destroyed.
### Reusable resources
There are other resources as well like:
- Descriptor sets
- Descriptor pools
## Open issues
There are some limitations that require future PRs to fix including:
- Background rendering
- Handling multiple windows
- Improve CPU/GPU synchronization
- Reuse staging buffers
Pull Request: https://projects.blender.org/blender/blender/pulls/126353
This PR introduces the concept of primitive expansion draws.
This allows to create a drawcall that will generate N amount of new
primitive for an original primitive in a `gpu::Batch`. The intent is to
phase out the use of geometry shader for this purpose.
This adds a new `Frequency::GEOMETRY` only available for SSBOs.
The resources using this will be fed the current `gpu::Batch` VBOs
using name matching.
A dedicated slot is reserved for the index buffer, which has its own
internal lib to decode the index buffer content.
A new attribute lib is added to ease the loading of unaligned attribute.
This should be revisited and made obsolete once more refactor
lands.
It is similar to the Metal backend SSBO vertex fetch path but it is
defined on a different level. The main difference is that this PR is
backend independant and modify the draw module instead of the GPU
module. However, it doesn't cover all possible attribute conversion
cases. This will only be added if needed.
This system is less automatic than the Metal backend one and needs
more care to make sure the data matches what the shader expects.
The Metal system will be removed once all its usage have been
converted.
This PR only shows example usage for workbench shadows. Cleanup PRs
will follow this one.
Rel #105221
Pull Request: https://projects.blender.org/blender/blender/pulls/125782
Improving performance as hashing the fragment shader was visible
in performance analysis. This PR calculates the hash once and stores
it inside the struct for quick access.
Pull Request: https://projects.blender.org/blender/blender/pulls/124882
During descriptor set update several internal buffers where reallocated
over and over. As descriptor set updates are done very often (1000s
times per frame) some performance could be gained by keeping the
previous allocated buffers around.
Pull Request: https://projects.blender.org/blender/blender/pulls/124877
When using particle hair the optional generated color buffer was bound
as a texture (texel buffer), however in Vulkan texel buffers aren't
textures but buffers.
This change will create a texture, that will pass the needed calls to
the source vertex buffer. Only particle hair does uses
`GPU_texture_create_from_vertbuf`. I would expect that we will phase
this out eventually when particle hair is removed.
This fixes crashes with scenes using particle hair where materials use color
or uv attributes.
Pull Request: https://projects.blender.org/blender/blender/pulls/124854
EEVEE can bind layers of a texture that is also used as an attachment. When binding
the image layout of these specific layers can be different that the image layout of
the whole image.
This fixes the known synchronization issues inside EEVEE. wasp_bot, tree_creature and
wanderer scenes can be rendered without any synchronization issue reported by the
Vulkan validation layers.
Design task: #124214
When beginning to render the attachments are being evaluated. If there is an arrayed
texture (with multiple layers) the individual layers of that texture can be tracked
during until the rendering is ended.
When the same texture is bound to a shader it will be a different layer (otherwise
there is a feedback loop, which isn't allowed). The bound layers will typically need
a different layout the transition to the new layout is executed and recorded. When
the rendering ends, the layers are transitioned back to the layout the texture is
expected in.
It can happen that a layer is used multiple times during the same rendering. In
that case the rendering should be suspended to perform the transition. Image layout
transitions are not allowed during rendering.
There is one place where a layer needs to be transited multiple times that is when
EEVEE wants to extract the thickness from the shadow. The thickness is stored inside
the gbuffer_normal which is also used as an attachment. Eval then samples the thickness
from the gbuffer_normal as a sampler. To work around this issue we suspend the rendering
when a `GPU_BARRIER_SHADER_IMAGE_ACCESS` is signaled.
Pull Request: https://projects.blender.org/blender/blender/pulls/124407
This PR will share render graphs between all contexts that run in
the same thread. This allows the draw manager commands to be added
to the same render graph as the UI.
- Fixes debug groups hiearchy. Draw manager would restart a hierarchy as
it wasn't aware of the debug groups already added by the UI
- Removes cpu sync when switching between contexts.
In a future change this is needed to improve discarding resources.
Pull Request: https://projects.blender.org/blender/blender/pulls/124715
The array-length of a texture view isn't stored at the same location as
the array-base and was forgotten that it was a feature what had to be
supported.
Detected when testing `monster.blend` where the SSS object id wasn't
set and lead to missing materials.
**Before**
**After**
Pull Request: https://projects.blender.org/blender/blender/pulls/124590
When clearing depth attachment the write depth state should be enabled.
When this isn't the case a clear texture is being performed. Before
the render graph this used to be a performance issue as the rendering
would be suspended.
The render graph currently reorders these texture clears before of
the rendering context and therefore isn't seen as a performance issue.
Pull Request: https://projects.blender.org/blender/blender/pulls/124340
This PR adds device statistics which can be printed to the console.
By default nothing is printed, but developer can choose to enable
it during development.
Pull Request: https://projects.blender.org/blender/blender/pulls/124150
EEVEE Eval light shader could still make a collision between
texture and image bind space making rendering glitch
when not using `--debug-gpu`. The problem was that the bind space
wasn't aware of the offset that the shader interface was using.
Pull Request: https://projects.blender.org/blender/blender/pulls/124140
Barycentric coordinates are used for the wireframe shader. It was
already implemented, but was made broken or when we change the depth
range or when we added support for fallback of shader viewport/layer
rendering. The previous implementation didn't use the correct
EmitVertex leading to incorrect depths. Also the shader layouts where
not Vulkan compliant.
Pull Request: https://projects.blender.org/blender/blender/pulls/124048
HiZ update performs a read/write on different buffers, this lead
to write-after-write hazards as the resources where added multiple
times in the same pipeline barrier with different access masks.
This is fixed by merging pipeline barriers based on their resource.
Pull Request: https://projects.blender.org/blender/blender/pulls/124036
Adds debug print function to output a node with its inputs and outputs.
Also keep track of the name of the resource (only images) what will
be presented. Tracking of the resource name is only done in debug builds.
Pull Request: https://projects.blender.org/blender/blender/pulls/124033
When copying the depth aspect of a depth+stencil image the incorrect
barriers where created. The barrier needs to have the full aspect, even
when we only copy a single aspect from the image.
Pull Request: https://projects.blender.org/blender/blender/pulls/123890
When a buffer resource was read, and after that read from another
shader stage it would not generate the appropriate pipeline barrier.
This is fixed by keeping the last write action around and check
if the shader stage was already included in the previous barriers.
Pull Request: https://projects.blender.org/blender/blender/pulls/123845
Draw Manager visibility compute shader triggered a read-after-write
hazard. This root cause was that the incorrect access was read from
the shader interface. It was set to none, skipping the needed pipeline
barrier.
Pull Request: https://projects.blender.org/blender/blender/pulls/123839
When a shader uses push constants fallback the push constants are
stored inside a uniform buffer. The uniform buffer needs to be guarded
with a read barrier.
Pull Request: https://projects.blender.org/blender/blender/pulls/123777
The image views type can change depending based on how they are bound
to shaders. When a shader accesses a view without array operations,
the image view should not be an array. This was previously ignored.
Pull Request: https://projects.blender.org/blender/blender/pulls/123726
When clearing only the depth of a depth/stencil only the depth
part of the image aspect was stored in the node. This is invalid
when the image needed to be transitioned.
Pull Request: https://projects.blender.org/blender/blender/pulls/123713
When having a sequential read image barriers for the same resource
and the second one requires an image layout transition the incorrect
barriers where generated.
This was fixed by aligning the implementation with write image barriers.
Pull Request: https://projects.blender.org/blender/blender/pulls/123712
Internally the image and texture resources where kept in a vector
where the elements were referenced. When using more than 16 images
this vector is reallocated and previous references become invalid.
This is a quick fix and should be changed with something more
stable.
Pull Request: https://projects.blender.org/blender/blender/pulls/123656
Due to incompatible binding namespaces between Vulkan and OpenGL we
offset the images in the ubo list. In the previous implementation
this could still go wrong as the images and textures bindings where
sequential. When EEVEE binds resources it can also try to bind resources
that aren't valid for the current shader. In this case it was still
possible that the incorrect binding was chosen.
This is fixed by offsetting the images by a large number.
Pull Request: https://projects.blender.org/blender/blender/pulls/123649
When many text using BLF the glymp texture could be re-written.
In this case the new upload should be done in a separate render
graph node group. This wasn't the case and resulted in
validation warnings about the glyph texture being in an layout
that wasn't expected.
This PR simplifies the group extraction a bit by looking ahead
when the group ends.
Pull Request: https://projects.blender.org/blender/blender/pulls/123547
Due to incorrect logic any multi viewport setup could be cleaned
when dynamic rendering begins. This patch moves the clearing
of the viewport/scissor setup when binding.
This issue fixes shadow rendering in EEVEE.
Pull Request: https://projects.blender.org/blender/blender/pulls/123484
`VK_EXT_shader_stencil_export` isn't supported by NVIDIA devices.
This extension was recently added to support EEVEE PBR layer selection.
This PR makes this extension optional and selects the work around
when not supported by the physical device.
Fixes#114385
Pull Request: https://projects.blender.org/blender/blender/pulls/123470
Vulkan backend has recently switched to a render graph approach. Many
code was left so we could develop the render graph beside the previous
implementation. Last week we removed the switch. This PR will remove
most of the unused code. There might be some left and will be removed
when detected.
Pull Request: https://projects.blender.org/blender/blender/pulls/123422
Add a `.data<T>()` method that retrieves a mutable span. This is useful
more and more as we change to filling in vertex buffer data arrays
directly, and compared to raw pointers it's safer too because of asserts
in debug builds.
Pull Request: https://projects.blender.org/blender/blender/pulls/123338
Texture update ignored layered based offsets and extents. This was
an oversight due to misintepreting the API. This fixes uploading the
utility texture of EEVEE and enables correct material shading.
Pull Request: https://projects.blender.org/blender/blender/pulls/123371
