Making it easier to work with shaders https://git.yummers.dev/slang.git/atom?h=master 2023-09-27T06:56:06+00:00 2023-09-27T06:56:06+00:00 Yong He yonghe@outlook.com 2023-09-27T06:56:06+00:00 urn:sha1:ebe8ddefc48478307d5f206cd3e40c41d28a36e3 * Various SPIRV fixes. - Geometry shader support (WIP). - Fix texture get dimension and load. - Fold global GetElement(MakeArray/MakeVector) insts. - Call spvopt to inline all functions. - Translate OpImageSubscript. - Emit struct member names and global variable names. - Fix lowering of OpBitNot -> OpNot, instead of OpBitReverse. * Fix test. * Fix geometry shader. * Fix geometry shader emit. * Add atomic Image access test. * Fix tests. * don't fail if spirv-opt fails. * Update comments. * Fix test. * Cleanups. * indentation --------- Co-authored-by: Yong He <yhe@nvidia.com> Co-authored-by: Ellie Hermaszewska <ellieh@nvidia.com> 2023-05-03T03:29:38+00:00 Yong He yonghe@outlook.com 2023-05-03T03:29:38+00:00 urn:sha1:d52376a65f37fcbbb67428b917fd3819436b6dfb * Various dxc/fxc compatibility fixes. * Cleanup. * Fix test cases. * Fix comments. --------- Co-authored-by: Yong He <yhe@nvidia.com> 2020-01-29T20:17:33+00:00 jsmall-nvidia jsmall@nvidia.com 2020-01-29T20:17:33+00:00 urn:sha1:415409fc10cfd0d6b2eb805df8f37bdabc4f2405 * When checking if an instruction can be folded, take into account if it's called by a target intrinsic, because if it is we need to check if the parameter is accessed multiple times to see if it's worth allowing to fold. * Tidy up code around folding/target intrinsics. * Fix texture-load.slang . * Fix typo in assert. 2019-01-25T20:02:50+00:00 Tim Foley tfoleyNV@users.noreply.github.com 2019-01-25T20:02:50+00:00 urn:sha1:41fde4b836dbab627f8643a5002b2b6dd0417211 A user found that the `Texture2D<float2>.Load(...)` operation was not being compiled to GLSL properly, such that it returned a `vec4` instead of the expected `vec2`. The GLSL texture-related functions always return (and take) 4-component vectors, and we already have infrastructure in `emit.cpp` for recognizing a `$z` operator in the GLSL intrinsic definition to stand in for an appropriate swizzle based on teh number of components in the texture result type. This change just adds that `$z` operator to the GLSL code for several more texture operations (including `Load()`) that are defined on a `Texture*<T>` and that return `T`. This change doesn't try to add additional GLSL translations for texture-related operations (e.g., additional variations like `SampleCmp` that we have defined in the stdlib but not given GLSL translations for). That work still needs to be done.