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In glsl the clamp function has undefined behavior when min > max. For
the clamp node this resulted in differences between cycles and eevee.
This patch adds the expected implementation for minmax.
The old clamp function is still used in cases where we know for certain
that the input values are correct (math node clamp option). GPU uses
optimized code and silicon in these cases.
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Some GPU platforms don't support having more than one underscore in
sequence in an attribute name. This change will remove the underscore
as a possible character when encoding to save names.
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Fix T83415: 3D View is red when using stereo
The red view was caused by SRGB not being enabled for an SRGB texture attached to the framebuffer.
Currently, when configuring a framebuffer, the first texture attachment needs to be an SRGB format in order for the framebuffer to be binded with SRGB enabled.
Thus, simply changing the SRGB texture attachment as the first texture attachment removes the red color in the view.
Reviewed By: #eevee_viewport, jbakker
Maniphest Tasks: T83415
Differential Revision: https://developer.blender.org/D9845
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Prepare for `BLI_str_unescape` which doesn't read well
without the separator.
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Windows
This is a workaround for T80804.
There's a startup crash that happens on 2.91.0 on Windows, an `EXCEPTION_ACCESS_VIOLATION`
on `atio6axx.dll`. It is triggered by `glClear` on the `detect_mip_render_workaround`
function. The workaround moves the function after the device/driver workaround section and
sets the flag to the affected one to avoid running the check.
It is deprecated hardware that has not meet the minimum requirements since 2.79, but is
still usable and this extends its usability a bit before the cards are finally blacklisted.
Reviewed By: Jeroen Bakker
Differential Revision: https://developer.blender.org/D9667
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There is a patch that fixes the crash on startup {D9667}.
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There is a workaround available by setting the environment variable `R600_DEBUG=nosb`.
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Modernize loops by using the `for(type variable : container)` syntax.
Some loops were trivial to fix, whereas others required more attention
to avoid semantic changes. I couldn't address all old-style loops, so
this commit doesn't enable the `modernize-loop-convert` rule.
Although Clang-Tidy's auto-fixer prefers to use `auto` for the loop
variable declaration, I made as many declarations as possible explicit.
To me this increases local readability, as you don't need to fully
understand the container in order to understand the loop variable type.
No functional changes.
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Replace `typedef` with `using` in C++ code.
In the case of `typedef struct SomeName { ... } SomeName;` I removed the
`typedef` altogether, as this is unnecessary in C++. Such cases have been
rewritten to `struct SomeName { ... };`
No functional changes.
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No functional changes.
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This patch adds support for AOVs in EEVEE. AOV Outputs can be defined in the
render pass tab and used in shader materials. Both Object and World based
shaders are supported. The AOV can be previewed in the viewport using the
renderpass selector in the shading popover.
AOV names that conflict with other AOVs are automatically corrected. AOV
conflicts with render passes get a warning icon. The reason behind this is that
changing render engines/passes can change the conflict, but you might not notice
it. Changing this automatically would also make the materials incorrect, so best
to leave this to the user.
**Implementation**
The patch adds a copies the AOV structures of Cycles into Blender. The goal is
that the Cycles will use Blenders AOV defintions. In the Blender kernel
(`layer.c`) the logic of these structures are implemented.
The GLSL shader of any GPUMaterial can hold multiple outputs (the main output
and the AOV outputs) based on the renderPassUBO the right output is selected.
This selection uses an hash that encodes the AOV structure. The full AOV needed
to be encoded when actually drawing the material pass as the AOV type changes
the behavior of the AOV. This isn't known yet when the GLSL is compiled.
**Future Developments**
* The AOV definitions in the render layer panel isn't shared with Cycles.
Cycles should be migrated to use the same viewlayer aovs. During a previous
attempt this failed as the AOV validation in cycles and in Blender have
implementation differences what made it crash when an aov name was invalid.
This could be fixed by extending the external render engine API.
* Add support to Cycles to render AOVs in the 3d viewport.
* Use a drop down list for selecting AOVs in the AOV Output node.
* Give user feedback when multiple AOV output nodes with the same AOV name
exists in the same shader.
* Fix viewing single channel images in the image editor [T83314]
* Reduce viewport render time by only render needed draw passes. [T83316]
Reviewed By: Brecht van Lommel, Clément Foucault
Differential Revision: https://developer.blender.org/D7010
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See T82856 for details.
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Since Blender 2.91 the TeraScale 2 based cards crash during startup.
This patch will show the user a screen that the platform they are using
isn't supported.
The GPUs have been carefully handpicked from dozens of reports. T83124,
T83127, T83103, T83091, T83045, T83065, T82750, T82889, T82925, T82640,
T82429, T82436, T82446.
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This was a leftover from the 2.91 GPU module refactor.
This is an exception that should be removed when we remove BGL.
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These fill shaders were used with the old draw engine.
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Also minor comment formatting changes.
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Conflicts:
source/blender/editors/render/render_opengl.c
source/blender/sequencer/intern/effects.c
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The issue was the use of alpha values of 0 when there were no blending
enabled.
This patch just disables the smoothing of the wires in this case.
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Replace `NULL` with `nullptr` in C++ code.
No functional changes.
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The blend equation was not set correctly inside the GL Module
since the refactor.
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The shadow path was not using the alpha threshold.
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This patch will apply the view transform when a movie clip is used as
camera background image. It does this by rendering the image in the
color buffer when it needs the view transform. For other images it uses
the overlay buffer.
Reviewed By: Clément Foucault
Differential Revision: https://developer.blender.org/D7067
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Default backbuffers needs not to be bound with sRGB encoding
enabled. This works when using `GPU_framebuffer_restore` but
using `GPU_framebuffer_bind` would trigger the wrong behavior.
This fix T81969 UI turns whiteish when playing video sequence
based on a scene and moving in the image editor after saving
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This patch allows the user to type a property name into the
Attribute node, which will then output the value of the property
for each individual object, allowing to e.g. customize shaders
by object without duplicating the shader.
In order to make supporting this easier for Eevee, it is necessary
to explicitly choose whether the attribute is varying or uniform
via a dropdown option of the Attribute node. The dropdown also
allows choosing whether instancing should be taken into account.
The Cycles design treats all attributes as one common namespace,
so the Blender interface converts the enum to a name prefix that
can't be entered using keyboard.
In Eevee, the attributes are provided to the shader via a UBO indexed
with resource_id, similar to the existing Object Info data. Unlike it,
however, it is necessary to maintain a separate buffer for every
requested combination of attributes.
This is done using a hash table with the attribute set as the key,
as it is expected that technically different but similar materials
may use the same set of attributes. In addition, in order to minimize
wasted memory, a sparse UBO pool is implemented, so that chunks that
don't contain any data don't have to be allocated.
The back-end Cycles code is already refactored and committed by Brecht.
Differential Revision: https://developer.blender.org/D2057
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Add a new Alpha socket to the Attribute node that outputs the
fourth component of the attribute. Currently the only such
attribute is vertex color, but there may be more in the future.
If the attribute has no alpha channel, the expected value is 1.
The Cycles code is already refactored and committed by Brecht.
Ref D2057
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We don't make use of it anyway.
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This removes the escape color control caracters when the output
does not supports it (i.e: file output, windows cmd).
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Found by valgrind, unclear if this caused an actual bug.
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This was reintroduced by the wide line emulation workaround.
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This avoid strange discrepency between the general purpose variant and
the specialized glass variant which did not have a way to turn
multi-scatter off.
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