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Those are usually not supported but some driver silently fix them and most
just silently fail (rendering error).
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In order to allow GLSL Cross Compilation across platforms, expose in
Python the `GPUShaderCreateInfo` strategy as detailed in
https://wiki.blender.org/wiki/EEVEE_%26_Viewport/GPU_Module/GLSL_Cross_Compilation
The new features can be listed as follows:
```
>>> gpu.types.GPUShaderCreateInfo.
define(
fragment_out(
fragment_source(
push_constant(
sampler(
typedef_source(
uniform_buf(
vertex_in(
vertex_out(
vertex_source(
>>> gpu.types.GPUStageInterfaceInfo.
flat(
name
no_perspective(
smooth(
>>> gpu.shader.create_from_info(
```
Reviewed By: fclem, campbellbarton
Differential Revision: https://developer.blender.org/D14497
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This option lets specify explicitely how the fragment shader will change
the fragment's depth.
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This is because the inheritance is not done before checking if the shader
should be statically compiled. Also some inheritance scheme
might have intermediate permutation that are not compilable.
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Use a shorter/simpler license convention, stops the header taking so
much space.
Follow the SPDX license specification: https://spdx.org/licenses
- C/C++/objc/objc++
- Python
- Shell Scripts
- CMake, GNUmakefile
While most of the source tree has been included
- `./extern/` was left out.
- `./intern/cycles` & `./intern/atomic` are also excluded because they
use different header conventions.
doc/license/SPDX-license-identifiers.txt has been added to list SPDX all
used identifiers.
See P2788 for the script that automated these edits.
Reviewed By: brecht, mont29, sergey
Ref D14069
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As of now we do not allow additional infos duplication. We could in the future
but for now assert that this is not the case.
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Source files are now only referenced and listed for the driver to ingest.
Shader sources now includes generated data if any.
Also cleans up gpu_shader_dependency_get_builtins casts.
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This includes multiple commits:
- Fix crash when using std::cerr for error output
- Add auto_resource_location which overrides all resources location (not vert input)
- Improve codestyle of error reporting.
- Add type conversion to string and to `eGPUType`
- Add comparison operator (will be used for hash collision resolution).
- Add members related to generated code (codegen)
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- Scan all static shaders for builtins on startup.
- Add possibility to manually add builtins.
- `ShaderCreateInfo.builtins_` contain builtins from all stages.
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This allows to check if a create_info extists based on its name.
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This opt-in functionnality enabled developper keep track of unused
resources present in the `GPUShaderCreateInfo` descriptors of their
shaders.
The output is pretty noisy at the moment so we do not enforce its usage.
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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 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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Some drivers/glsl compilers will not warn about multiple resources using
the same binding, creating silent errors.
This patch checks for this case and outputs a descriptive error message if
a particular createInfo merge error is founds.
Other validation can be added later.
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This merge the description into one struct only that can be more easily
copied during `finalize()`.
The in and out layout parameters are better named and extended with the
invocation count (with fallback support)
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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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