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Enable HLSL legalization

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Also added known-good mechanism to fetch latest validated spirv-tools.
Also added -Od and -Os to disable optimizer and optimize for size.

Fetching spirv-tools is optional for both glsl and hlsl. Legalization
of hlsl is done by default if spirv-opt is present at cmake time.
Optimization for glsl is currently done through the option -Os.

Legalization testing is currently only done on four existing shaders.
A separate baseLegalResults directory holds those results. All previous
testing is done with the optimizer disabled.
This commit is contained in:
GregF 2017-09-21 18:40:22 -06:00
parent 44dd6a00c3
commit cd1f169c6a
16 changed files with 536 additions and 23 deletions
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8
README.md
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@ -74,6 +74,14 @@ cd <the directory glslang was cloned to, "External" will be a subdirectory>
git clone https://github.com/google/googletest.git External/googletest
```
If you wish to assure that SPIR-V generated from HLSL is legal for Vulkan,
or wish to invoke -Os to reduce SPIR-V size from HLSL or GLSL, install
spirv-tools with this:
```bash
./update_glslang_sources.py
```
#### 3) Configure
Assume the source directory is `$SOURCE_DIR` and