Making it easier to work with shaders https://git.yummers.dev/slang.git/atom?h=master 2017-11-13T22:17:09+00:00 2017-11-13T22:17:09+00:00 Tim Foley tfoleyNV@users.noreply.github.com 2017-11-13T22:17:09+00:00 urn:sha1:c9d94248dc73fe41c344b0a23230e597f7b94a2c * Don't auto-enable IR use for compute tests The `COMPARE_COMPUTE` and `COMPARE_RENDER_COMPUTE` test fixtures were set up to always enable the `-use-ir` flag on Slang, which precludes having any tests that confirm functionality on the old non-IR path (which is still required by our main customer). This change adds the `-xslang -use-ir` flags explicitly to any compute test cases that left them out, and makes the fixture no longer add it by default. * Continue building out parameter block support The initial front-end logic for parameter blocks was already added, but they are still missing a bunch of functionality. This change addresses some of the known issues: - Bug fix: don't try to emit HLSL `register` bindings for variables that consume whole register spaces/sets - Overhaul type layout logic so that it can make decisions based on a given code generation target (currently passed in as a `TargetRequest`), which allows us to decide whether or not a parameter block should get its own register set on a per-target basis. - Always use a register space/set for Vulkan - Never use a register space/set for HLSL SM 5.0 and lower - By default, don't use register spaces/sets for HLSL output - Add a command-line flag and some "target flags" to enable register-space usage for D3D targets - Hackily add initial support for parameter blocks in the AST-to-AST path - This just blindly lowers `ParameterBlock<T>` to `T`, which shouldn't quite work - A more complete overhaul will probably need to wait until the AST-to-AST legalization is changed to use the `LegalType`s from the IR legalization pass. - Add a compute-based test case to actually run code using parameter blocks - This file runs test cases both with and without the IR