Do this only when applicable.
This allow better compile time checking in Shader C++ compilation.
Moreover, this allows to have `constexpr` in shared code between
C++ and GLSL.
After investigation the `const` keyword in GLSL has the same
semantic than C/C++.
Rel #137333 and #137446
Pull Request: https://projects.blender.org/blender/blender/pulls/137497
This unify the C++ and GLSL codebase style.
The GLSL types are still in the backend compatibility
layers to support python shaders. However, the C++
shader compilation layer doesn't have them to enforce
correct type usage.
Note that this is going to break pretty much all PRs
in flight that targets shader code.
Rel #137261
Pull Request: https://projects.blender.org/blender/blender/pulls/137369
They are actually already some literals with the `f` suffix
that are in our shader codebase and we never had problem in
the past 5 years (or even 8 years).
So I think it is safe to do and improves convergence of codestyles.
Pull Request: https://projects.blender.org/blender/blender/pulls/137352
This allow to store the full object ID inside a `uint32`
buffer. This allows to get the per object data in deferred
passes and avoid to store object data inside the Gbuffer.
This data is only written if needed.
This had to modify the implementation of subpass input
for all backend to be able to bind layered texture.
This currently work because only the layer 0 is bound to the
framebuffer. This is fragile but I don't see a good builtin way
to fix it.
Rel #135935
#### Tasks
- [x] Replace light linking bits in Gbuffer
- [x] Replace Object ID in GBuffer for SSS
- [x] Conditional storage
- [x] Dummy storage if not needed
Pull Request: https://projects.blender.org/blender/blender/pulls/136428
Move the code dealing with converting float3 to GPU normals
out of the vertex format header into a separate header. Use a
proper C++ namespace and remove duplication by only using
the more recently added C++ templated conversions.
Most of the diff comes from the removal of the indirect includes
from GPU_vertex_format.hh. A lot of files ended up mistakenly
depending on that.
Pull Request: https://projects.blender.org/blender/blender/pulls/134873
This patch adds the texture pool functionality that was previously
only available in the DRW module to the GPU module.
This allows to not rely on global `DST` variable for the managment
of these temporary textures.
Moreover, this can be extended using dedicated GPU backend
specific behavior to reduce the amount of memory needed
to render.
The implementation is mostly copy pasted from the draw implementation
but with more documentation. Also it is simplified since the
`DRW_texture_pool_query` functionality is not needed.
Pull Request: https://projects.blender.org/blender/blender/pulls/134403
When running test cases
`test_texture_roundtrip__GPU_DATA_10_11_11_REV__GPU_R11F_G11F_B10F`
would read and write outside of allocated memory. This is an error in
the test case itself the GPU API doesn't have a public function to get
the desired byte and component size.
Pull Request: https://projects.blender.org/blender/blender/pulls/129958
Move most of the string preprocessing used for MSL
compatibility to `glsl_preprocess`.
Enforce some changes like matrix constructor and
array constructor to the GLSL codebase. This is
for C++ compatibility.
Additionally reduce the amount of code duplication
inside the compatibility code.
Pull Request: https://projects.blender.org/blender/blender/pulls/128634
This changes the include directive to use the standard C preprocessor
`#include` directive.
The regex to applied to all glsl sources is:
`pragma BLENDER_REQUIRE\((\w+\.glsl)\)`
`include "$1"`
This allow C++ linter to parse the code and allow easier codebase
traversal.
However there is a small catch. While it does work like a standard
include directive when the code is treated as C++, it doesn't when
compiled by our shader backends. In this case, we still use our
dependency concatenation approach instead of file injection.
This means that included files will always be prepended when compiled
to GLSL and a file cannot be appended more than once.
This is why all GLSL lib file should have the `#pragma once` directive
and always be included at the start of the file.
These requirements are actually already enforced by our code-style
in practice.
On the implementation, the source needed to be mutated to comment
the `#pragma once` and `#include`. This is needed to avoid GLSL
compiler error out as this is an extension that not all vendor
supports.
Rel #127983
Pull Request: https://projects.blender.org/blender/blender/pulls/128076
When performing framebuffer transition on legacy opengl platforms, some
state was uninitialized. Resulting in incorrect behavior and crashes.
Note that this doens't fix the black cube on legacy platforms. With this PR we
might be able to reproduce the issue on modern HW.
Pull Request: https://projects.blender.org/blender/blender/pulls/123989
Test cases that uses compute shaders were exited when run on platforms
not supporting compute shaders. Since 4.0 Blender requires a platform
that supports compute shaders.
We should eventually phase out `GPU_compute_shader_support` as it
would always return true. Note that in OpenGL a platform is mentioned
that doesn't support compute shaders, but that is from an old driver
and should be save to remove as well.
Pull Request: https://projects.blender.org/blender/blender/pulls/120907
- Expected results should come before actual result.
- Add test case for 8192 bytes as apple has a push constants size of 4096.
- Add more variation to the first order test data.
Improvements detected when working on vulkan backend and validated they
work on metal and opengl as well.
Pull Request: https://projects.blender.org/blender/blender/pulls/120557
Now that all relevant code is C++, the indirection from the C struct
`GPUVertBuf` to the C++ `blender::gpu::VertBuf` class just adds
complexity and necessitates a wrapper API, making more cleanups like
use of RAII or other C++ types more difficult.
This commit replaces the C wrapper structs with direct use of the
vertex and index buffer base classes. In C++ we can choose which parts
of a class are private, so we don't risk exposing too many
implementation details here.
Pull Request: https://projects.blender.org/blender/blender/pulls/119825
