| Commit message (Collapse) | Author | Age |
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* First pass support for performance profiling
* Test across all elements
* Fix bug - sourceContents is not used, should use rawSource.
* * Add ability to get prelude from API.
* Allow specifying source language for render-test
* Made it possible to compile a test input file as C++
* Special handling for reflection
* Added C++ impl to performance-profile.slang
* Remove some clang warnings.
* Output profile timings on appveyor and other TC.
* Remove passing around of StdWriters (can use global).
Small comment improvements.
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* WIP: Improving CPU performance/ABI
* Optionally output code on CPU for groupThreadID and groupID.
* Added ability to set compute dispatch size on command line for render-test.
Dispatch compute tests taking into account dispatch size.
Added test for semantics are working.
* Test using GroupRange.
* Fix problem with adding \n for externa diagnostic - to do it if there isn't a \n at the end. Change the ouput order (put result before) so last value is diagnostic string.
* Made GroupRange the default exposed CPU ABI entry point style.
Removed CPU_EXECUTE test style -as tested via the now cross platform render-test
* Split out execution from setup for execution to improve perf.
* For better code coverage/testing test all styles of CPU compute entry point.
* Improve documentation for ABI changes for CPU code.
Add 'expecting' to error message from review.
* Fix small typos.
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* WIP: Improving CPU performance/ABI
* Optionally output code on CPU for groupThreadID and groupID.
* Added ability to set compute dispatch size on command line for render-test.
Dispatch compute tests taking into account dispatch size.
Added test for semantics are working.
* Test using GroupRange.
* Fix problem with adding \n for externa diagnostic - to do it if there isn't a \n at the end. Change the ouput order (put result before) so last value is diagnostic string.
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* First pass of render-test refactor.
* Make window construction a function that can choose an implementation.
* Remove OpenGL as currently has windows dependency.
* Disable Vulkan as Renderer impl has dependency on windows.
* Pass Window in as parameter of 'update'.
* Add win-window.cpp as was missing.
* Fix warning on windows about signs during comparison.
* * Added mechanism to add random arrays as buffer inputs and select type
* Improved RenderGenerator to generate more types, and to be more careful around int32 ranges.
* Added support for security checks (for Visual Studio C++)
* Disable Execption handling being on by default when compiling kernels
* Added a 'Group' version of the entry point that will evaluate all threads in a group in a single call. In test code use this method if available.
* Added -compile-arg to be able to pass arguments to the compile within render-test
* Add documention for the _Group execution feature.
* Fix some typos in cpu-target.md
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* WIP: Refactor of CPUCompute and stand alone cpu-render-test
* Fix compilation on CygWin.
* Make CPU compute tests run on non windows targets.
* Check that C/C++ compiler is available for CPU compute.
* Fix some tabbing issues.
* Add -fPIC on gfx
* Use dxcompiler_47.dll from slang-binaries on windows.
* make https for git module slang-binaries
* Fix comment in premake5.lua around d3dcompiler_47.dll
* Add resources to the CPUComputeUtil::Context to keep in scope.
* Fixes problem compiling on cygwin where dx12 is included in build of gfx lib.
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* * Simplify some of test code around CPPCompiler
* Test using 'callable' with pass-through
* Small cpu doc improvements
* Improvements to Clang output parsing.
* Remove temporary file (base filename) .
* Improve handling of external errors - handle severity.
* On error dumping out to 'actual' file for runCPPCompilerCompile.
* Small fixes.
Set the source language type correctly for pass thru.
* Remove warning for test for clang backend c
* Preliminary work around making render-test compute potentiall work with CPU.
Made ShaderCompiler -> a stateless ShaderCompilerUtil.
Means we don't require a Renderer interface to do shader compilation.
* Refactor such that CPU test can take place in without Window or Renderer.
* Hack to look for prelude in source file directory.
Fix bug returning the SharedLibrary for HostCallable.
* Compute test running on CPU.
* Need the prelude currently in same directly as test.
* Hack to remove warning - that then produces an error on appveyor build.
Disable running render CPU test on non-windows.
* Improve handling of disabling CPU tests on linux.
* Added bit-cast.slang working on CPU.
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* Prefixing source files in source/slang with slang-
* Prefix source in source/slang with slang- prefix.
* Rename core source files with slang- prefix.
* Update project files.
* Fix problems from automatic merge.
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* List made members m_
Tweaked types to closer match conventions.
* Use asserts for checking conditions on List.
Other small improvements.
* List<T>.Count() -> getSize()
* List<T>
Add -> add
First -> getFirst
Last -> getLast
RemoveLast -> removeLast
ReleaseBuffer -> detachBuffer
GetArrayView -> getArrayView
* List<T>::
AddRange -> addRange
Capacity -> getCapacity
Insert -> insert
InsertRange -> insertRange
AddRange -> addRange
RemoveRange -> removeRange
RemoveAt -> removeAt
Remove -> remove
Reverse -> reverse
FastRemove -> fastRemove
FastRemoveAt -> fastRemoveAt
Clear -> clear
* List<T>
FreeBuffer -> _deallocateBuffer
Free -> clearAndDeallocate
SwapWith -> swapWith
* List<T>
SetSize -> setSize
Reserve -> reserve
GrowToSize growToSize
* UnsafeShrinkToSize -> unsafeShrinkToSize
Compress -> compress
FindLast -> findLastIndex
FindLast -> findLastIndex
Simplify Contains
* List<T>
Removed m_allocator (wasn't used)
Swap -> swapElements
Sort -> sort
Contains -> contains
ForEach -> forEach
QuickSort -> quickSort
InsertionSort -> insertionSort
BinarySearch -> binarySearch
Max -> calcMax
Min -> calcMin
* Initializer::Initialize -> initialize
List<T>::
Allocate -> _allocate
Init -> _init
IndexOf -> indexOf
* * Put #include <assert.h> in common.h, and remove unneeded inclusions
* Small refactor of ArrayView - remove stride as not used
* getSize -> getCount
setSize -> setCount
unsafeShrinkToSize->unsafeShrinkToCount
growToSize -> growToCount
m_size -> m_count
* Some tidy up around Allocator.
* Use Index type on List.
* Refactor of IntSet.
First tentative look at using Index.
* Made Index an Int
Did preliminary fixes.
Made String use Index.
* Partial refactor of String.
* String::Buffer -> getBuffer
ToWString -> toWString
* Small improvements to String.
String::
Buffer() -> getBuffer()
Equals() -> equals
* Try to use Index where appropriate.
* Fix warnings on windows x86 builds.
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* First pass extract the test information by 'running tests'.
* * Checking renderer availablilty
* Using TestInfo to determine which tests are run and synthesized
* Display if test is synthesized and what render api it's targetting
* * Improved comments
* Removed some dead code
* Display ignored tests.
* TestInfo -> TestRequirements
* * Added DIAGNOSTIC_TEST type - test always runs (ie has no requirements).
* Made diagnostic tests use DIAGNOSTIC_TEST
* TestInfo -> TestRequirements
* TestDetails holds TestRequirements and TestOptions
* Fix debug typo.
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* * Make adapter used selectable on the command line
* Added 'adapter' to Renderer::Desc with dx11, dx12, vk honoring it
* GL will check that the renderer matches, but cannot select a specific device
* Share functionality on dx adapter selection in D3DUtil
Note - that on tests that use OpenGL and the adapter doesn't match it will ignore the test (and display a message that the appropriate device couldn't be started)
* Small function name improvement.
* Variable rename to match type.
* Fix typo in Dx12 device selection.
* * Add checking if an adapter is warp
* Improve some comments
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* Look at getting half to work on vk.
* Alter half test so can always produce consistent test results.
* First pass working half on vk.
* Improve comments for vulkan extensions around half.
* Upgraded vulkan headers to v1.1.103
https://github.com/KhronosGroup/Vulkan-Headers
* * Add getFeatures on Render interface
* Vulkan renderer determines at startup if it can support half
* Parse render-features on render-test
* Small changes to half-calc.slang test.
* Structured buffer half access works as expected for Vk, but isn't for dx12, so disable for now.
* Require the half feature for renderers for the half-structured-buffer.slang test.
* * Added ToolReturnCode to be more rigerous about how a return code is passed back from a tool
* Added support for a tool being able to pass back an 'ignored' result.
* Used enum codes to indicate meanings
* Made spawnAndWait return a ToolReturnCode
* Ignore tests that don't have required render-feature
* Fix macro line continuation usage.
* Check dx12 has half support.
* Checking for half on dx12 - if CheckFeatureSupport fails, don't fail renderer initialization.
* Fix typo.
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lines (#885)
* * Check for inconsistent command line options for renderer
* Moved RenderApiUtil into core so can be used in slang-test
* Make it use the ShaderdLibrary for API testsing
* Added some simplifying functions to StringUtil for spliting/comparisons
* Refactored the synthesis of rendering tests so that inconsistent combinations are not produced
* Add missing slang-render-api-util.cpp & .h
* Stop warning on linux about _canLoadSharedLibrary not being used.
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* First pass at having an interface to write text to that can be replaced.
Simplifed and made more rigerous the interface used to write formatted strings.
* Added AppContext to simplify setting up and parsing around of streams.
* Added more simplified way to get the std error/out from AppContext.
* Work in progress using dll for tools to speed up testing.
* First pass at ISlangWriter interface.
* Added support for writing VaArgs.
Added NullWriter.
* Use ISlangWriter for output.
* Use ISlangWriter for output - replacing OutputCallback.
Make IRDump go to ISlangWriter
* SlangWriterTargetType -> SlangWriterChannel
Improvements around AppContext
* Shared library working with slang-reflection-test.
* Dll testing working for render-test.
* Include va_list definintion from header.
* Fix errors from clang.
* Fix typo for linux.
* Added -usexes option
* Fix typo.
* Fix arguments problem on linux.
* Fix typo for linux.
* Add windows tool shared library projects.
* Fix warning from x86 win build.
Fix signed warning from slang-test/main.cpp
* First attempt at getting premake to work on travis, and run tests.
* Try moving build out into script.
* Invoke bash scripts so they don't have to be executable.
* Drive configuration/tests from env parameters set by travis
* Try using source to run travis tests.
* Remove the build.linux directory - but doing so will overwrite Makefile.
* Made -fno-delete-null-pointer-checks gcc only.
* Try to fix warning from -fno-delete-null-pointer-checks
* Turn of warnings for unknown switches.
* Try to make premake choose the correct tooling.
* Disabled missing braces warning.
* Disable -Wundefined-var-template on clang.
* -Wunused-function disabled for clang.
* Fix typo due to SlangBool.
* Remove this nullptr tests.
* "-Wno-unused-private-field" for clang.
* Added "-Wno-undefined-bool-conversion"
* Add DominatorList::end fix.
* Split scripts into travis_build.sh travis_test.sh
* Fix gcc/clang template pre-declaration issue around QualType.
* Fix premake to build such that pthread correctly links with slang-glslang
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The Slang compiler allows the default matrix layout convention (row-major vs. column-major) to be specified via the command line or API.
When generating output HLSL, Slang emits a `#pragma pack_matrix` directive for the chosen default convention, so that a user can generate plain HLSL output and still have it encode their desired defaults.
The problem that has arisen is that many released versions of dxc (including those in the most recent Windows SDK at this time) *ignore* the `#pragma pack_matrix` directive (the feature has since been added to top-of-tree dxc).
The main fix here is to instead pass the `-Zpr` option in to dxc when invoking it if the row-major (non-default) convention is requested.
This will solve the problem for clients that use Slang to generate DXIL, but not for clients who use Slang to generate plain HLSL that they then pass into dxc (those clients are assumed to be able to work around the problem for themselves).
In order to test the change, I added a test that fills a constant buffer with sequential integers, and then reads out the rows/columns of an `int3x4` matrix with both row- and column-major layout, as well as an integer placed *after* the matrix, so we can see the offset it was given.
The `render-test` application did not yet support generating code via dxc/DXIL, so I added an option for that.
This ends up assuming that anybody who is running the D3D12 tests will also have a version of dxc available.
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* Premake work in progress for linux.
* Added dump function.
* Remove examples on linux
Small warning fix.
* * Don't build render-test on linux
* Removed work around virtual destructor warning, and just used virtual dtor for simplicity
* Git ignore obj directories
* Fix premake working on windows.
* * Fix sprintf_s functions
* Make generates arg parsing more robust
* Added FloatIntUnion to avoid type punning/strong aliasing issues, and repeated union definitions.
* Work around problems building on linux with getClass claiming a strict aliasing issue.
* Fix for targetBlock appearing potentiall used unintialized to gcc.
* Linux slang link options -fPIC to make dll.
* Add -fPIC to build options on linux.
* Add -ldl for linux on slang.
* Fixes to try and get premake working with .so on linux.
* Make core compile with -fPIC
* Try to fix linux linking with --no-as-needed before -ldl
* Add rpath back.
* Remove render-gl from linux build.
* Re-add location for linux.
* Don't include <malloc.h> except on windows.
* Remove unused line to fix warning on osx.
* Remove ambiguity on OSX for operator <<.
* Fixing ambiguity with operator overloading and Int types for OSX.
* Fix ambiguity around UInt and operator
* Fix ambiguity of UInt conversion for OSX.
* Added UnambiguousInt and UnambiguousUInt to make it easier to work around OSX integer coercion for UInt/Int types.
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* Make render-test use Slang for all shader compilation
This streamlines the code for render-test by having all its shader compilation go through the Slang API, so that it doesn't have to deal with custom logic to compile HLSL->DXBC and HLSL->DXIL. We were already leaning on Slang to generate SPIR-V for Vulkan, so this makes all the paths more consistent.
My original plan with this change was to make the D3D12 render path start using DXIL at this point, since the change would make that easy, but it turns out that some aspects of how we handle parameter binding are not compatible with that right now, so it would need to come as a later change.
There's a lot of details here, so I will try to walk through the changes, including the incidental ones:
* Add logic to `premake5.lua` so that we copy the necessary libraries for HLSL shader compilation to our target directory from the Windows SDK. This is necessary so that our tests can actually invoke `dxcompiler.dll`
* Re-run Premake to generate new project files. This moves around a few files that I manually added in previous changes without re-running Premake.
* When invoking `fxc` as a pass-through compiler, be sure to pass along any macros defines via API or command-line. This isn't a strictly required change with how things worked out, but it is a positive one anyway, because it makes `slangc -pass-through fxc` more useful.
* Don't print output from a downstream `fxc` invocation if it produces warnings but no errors. The main reason for this is so that our tests don't fail because of `fxc` warnings on Slang's output (which then don't match the baselines), but it can also be rationalized as not wanting to confuse users with warnings that don't come from the "real" compiler they are using. This probably needs fine-tuning as a policy.
* Add the HLSL `NonUniformResourceIndex` function. This was an oversight because it isn't documented as a builtin on MSDN, and only gets mentioned obliquely when they talk about resource indexing.
* Add `glsl_<version>` profiles to match our `sm_<version>` profiles, so that it is easy for a user to use the profile mechanism to request a specific GLSL version without also specifying a stage name.
* Update the render-test logic so that there is a single `ShaderCompiler` implementation that *always* uses Slang, and get rid of all of the renderer-specific `ShaderCompiler` implementations.
* Update logic in render-test `main.cpp` to select the options to use for the eventual Slang compile based on the choice of renderer and input language. I didn't change the options that render-test exposes, even though they are getting increasingly silly (e.g., `-glsl-rewrite` doesn't use GLSL as its input...).
* Note: the D3D12 renderer will still use fxc, DXBC, and SM 5.0 for now, since trying to update it to switch to dxc, DXIL, and SM 6.0 didn't work well at the time.
* Add a bit of supporting D3D12 code to make sure that we don't allocate a structured buffer when a buffer has a format.
* Make sure to *also* define the `__HLSL__` macro when compiling Slang code, because otherwise a bunch of tests don't work (I'm not clear on how it worked before...).
* fixup: missing file
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* First pass at InputLayout for Vulkan
Add support for RGBA_Float32
* Use VulkanModule and VulkanApi to handle accessing Vulkan types.
* First pass at Vulkan swap chain/Device queue.
* Added VulkanUtil for generic function functions.
* Move more functionality to VulkanApi and VulkanUtil.
Make Buffer able to initialize itself.
* More tidy up around VulkanDeviceQueue
* First pass use of VulkanDeviceQueue in VkRenderer
* First pass use of VulkanSwapChain on VkRenderer
* Added depth formats.
Binding for constant and vertex buffers for Vulkan.
* Setting up VkImageView on backbuffers.
* First pass support for setting up vkRenderPass.
* Fixes to work around Vulkan swap chain/verification issues.
* Added support for Pipeline and a pipeline cache.
* Working without waiting - because use of pipeline cache.
* Added support for VkFramebuffer in Vulkan.
* First pass at creating Vulkan graphics pipeline.
* More efforts to get Vulkan to render.
* Small improvement for checking of Binding flags.
* Removed setConstantBuffers from the Renderer interface - so that all resource binding takes place through the BindingState.
To make this work required a 'hack' in render-test main.cpp - so that the constant buffer binding that is needed in some tests is only added when it doesn't clash.
* RendererID -> unified into RendererType. Added getRendererType to Renderer interface.
Added ProjectionStyle, and function to get from RendererType.
Added getIdentityProjection to RendererUtil - to get projection that is the 'identity' - but hits the same pixels for all projection styles.
* Fix build problem on Win32 on Vulkan where should use VK_NULL_HANDLE.
* Improve naming, comments. Remove dead code.
* Remove unwanted comment.
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* Dx12 rendering works in test framework.
* Turn on dx12 render tests.
* Getting simpler dx12 compute tests to work.
* With expected data in test - check for specialized and then for the default, so that multiple test can share the same expected data, but specialized cases can still be set.
* Fixed construction and binding on dx12 textures.
* Control which render apis used in test from command line.
* Small aesthetic fixes in render-test/main.cpp.
* Fix binding problem for uavs/srvs dx12. Previously tried to create srv/uav for StorageBuffers (like dx11 does), but the binding breaks as you can end up with two srvs using the same register.
First pass at fixing problems with Texture creation for dx12 - assertions were hit with 3d or array textures.
* Fixes to improve Dx12 setup shader resource views for cubemaps/arrays.
* Fixed d3d12 textureSamplingTest - problem was that cubemap/array textures were not being uploaded correctly.
* Changed the order of how binding of constant buffers (as just set on the Renderer) indexes. Previously they were given the lowest indices, but they clashed with the indices from the 'Binding'. Changing this means all tests run on d3d12.
* Add code to allow use of warp (although not command line switchable yet).
Fix problem setting up raw UAV - as identified by warp.
* Added RenderApiUtil - which can detect if a render api is potentially available.
* Moved render flag testing/parsing into RenderApiUtil.
* Fix signed/unsigned warning.
* Fixes around enums prefixed with k on the review of feature/dx12 compute branch.
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* Fixed some small typos in api-users-guide.md
* Fix some small typos in slang-test/main.cpp, render-test/render-d3d11.cpp
* Remove exit() calls from test code. Added Slang::Result, which works in the same way as COM HRESULT.
* FIx bug introduced when moving to Slang::Result - handling E_INVALIDARG on Dx11.
* Fix the testing of feature levels on Dx11 renderer.
* First attempt at README.md for slang-test.
* Tidied up the slang-test README.md file.
* Fix some small typos in tools/slang-test/main.cpp
* Fix spaces -> tabs problems.
Fix some small types.
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* Basic fixes to gets some Vulkan GLSL out of the IR path
We haven't been paying much attention to the Vulkan output from the IR path, but that needs to change ASAP. This commit really just implements quick fixes, without concern for whether they are a good fit in the long term.
- Add some more mappings from D3D `SV_*` semantics to built-in GLSL variables, and stop redeclaring those built-in variables in our output GLSL.
- Add custom output logic for HLSL `*StructuredBuffer<T>` types, so that they emit as `buffer` declarations with an unsized array inside. This has some real limitations:
- What if the user passes the type into a function? The parameter should be typed as an (unsized) array, and not a buffer.
- What happens if we have an array of structured buffers? We need to declare an array of blocks (which GLSL allows), but this changes the GLSL we should emit when indexing.
- Customize the way that we emit entry point attributes (e.g., `[numthread(...)]`) to also support outputting equivalent GLSL `layout` qualifiers.
In many of these cases, a better fix might involve doing more of this work in the IR as part of legalization (e.g., we already have a pass that deals with varying input/output for GLSL, so that should probalby be responsible for swapping the `SV_*` to `gl_*`, especially in cases where the types don't match perfectly across langauges).
* Start adding Vulkan support to render-test
- Add both Vulkan and D3D12 as nominally supported back-ends
- Add a git submodule to pull in the Vulkan SDK dependencies
- I don't want our users to have to install it manually, since the SDK is huge
- Checking in the binaries to our main repository seems like a bad idea, but my hope is that we can prune the bloat using a subodule with the `shallow` cloning option
- Implement enough logic for the Vulkan back-end to get a single test passing on Vulkan
* Fix warning
* Fixup: disable new compute tests for Linux
* Fixup: ignore Vulkan tests on AppVeyor
* Dynamically load Vulkan implementation
Rather than statically link to the Vulkan library, we will dynamically load all of the required functions.
This removes the need to have the stub libs involved at all.
* Remove vulkan submodule
I had set up a `vulkan` submodule to pull in the headers and stub libs, but now that we are going to dynamically load all the symbols anyway, the stub lib binaries aren't needed and we can just commit the headers.
* Add Vulkan headers to external/
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vertex/fragment shader pair, but instead of comparing the resulting framebuffer, it expects the test shader to write results into a UAV, and compares the pixel shader UAV output to the reference output.
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testing framework.
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The basic idea of this change is that user code can just write:
#include "foo.h"
and then if `foo.h` gets found in a list of registered directories for "auto-import," then it actually gets interpreted as if the user had writte, more or less:
__import foo;
That is, the code in `foo.h` will be treated as Slang, and will be fully parsed and checked (no matter what the source language had been), and the scoping rules will be those of `__import` instead of `#include`.
This is a really big hammer, and I could imagine it smashing fingers if used poorly.
I'm not sure this feature will pan out, but we need to try things to know.
One big piece of that that I'll likely keep in either case is an overhaul of command-line options parsing for `slangc`. In particular, this logic has been moved into the core `slang` library (so that users can just pass options in via the API), and it is all done on UTF-8 strings rather than wide strings (which was always going to be Windows-specific).
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This is a large change that contains many pieces:
- Update the `cross-compile0` test to actually make use of cross compilation.
Now the `cross-compile0.hlsl` file contains both HLSL and GLSL source code, and then imports code from `cross-compile0.slang`, which provides a "library" (one function) that can be shared between both the HLSL and GLSL version of things.
- Fixed a bug in the support for backslash-escaped newlines.
- Added a new `__import` declaration type (replaces the `using` directive that was still around in a vestigial form)
An `__import` causes the compiler to look for a Slang source file (currently using the ordinary `#include` lookup logic), and then parse/check the found file as an additional module ("translation unit"), before making its declarations visible in the current scope.
- Refactored the main compilation flow to be simpler. There were the `ShaderCompiler` and `ShaderCompilerImpl` classes that weren't relaly doing anything, but added complexity to the whole workflow.
- The `render-test` application has been heavily modified to better support testing cross-compilation workflows. At the most basic level we are starting to distinguish pass-through vs. rewriter workflows, and are passing various `#define`s down to the compiler(s) to let the source code be customized as needed for each case.
Several annoying corner cases are caused here by having to support the GLSL compilation model, which really wants each entry point in its own specific translation unit, whereas we really want to keep things nicely contained in single files.
- Added support for `__intrinsic` operations to have target-specific behavior.
This allows a function to be given a different name for some specific target (so a call gets emitted as a call to that other operation).
More generally, the library writer can put together an arbitrary format string that will be used in place of expressions that call the given function, e.g.:
__intrinsic(hlsl, "$1 - $0") __intrinsic int foo(int a, int b);
Given this declaration, a call like `foo(x,y)` will code generate as `x - y` for HLSL, and as `foo(x,y)` for all other targets.
Annoying things still to be dealt with:
- The way that I'm filtering the user-provided options when passing things down to the compilation of dynamically loaded modules is a bit ad hoc. It would be good to have a systematic notion of which options will be inherited and which won't. There is also more code duplication than I'd like, so we risk having the compiler behave differently when compiling a file at the top level, vs. because of `__import`.
- Adding target-specific behavior to intrinsics is all well and good, but the current approach means we can only add this to the original declaration, which limits the ability to easily extend the set of targets.
A better approach long-term would be to add a more robust notion of target-based overload resolution (which would happen after semantic checking). Then one mechanism would be used to find the right target-specific overload to use for an operation, and then each (target-specific) definition could use a simpler attribute to intercept code-generation behavior.
Note that we might eventually need a similar notion to deal with stage- or profile-specific functions and the overloading behavior around them, so using this for intrinsics doesn't seem like a bad idea.
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The test case that is there right now is nominally a cross-compilation test, but for right now it uses the preprocessor to present completely different code for HLSL and GLSL compilation.
This change is really just fleshing out the OpenGL side of `render-test` enough that it can produce images using OpenGL to enable further testing.
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