Making it easier to work with shaders https://git.yummers.dev/slang.git/atom?h=master 2025-08-06T22:56:27+00:00 2025-08-06T22:56:27+00:00 Yong He yonghe@outlook.com 2025-08-06T22:56:27+00:00 urn:sha1:de7ccaf127d8bb847a0ad25f45e8d1902dc1b958 2025-05-16T18:57:17+00:00 ArielG-NV 159081215+ArielG-NV@users.noreply.github.com 2025-05-16T18:57:17+00:00 urn:sha1:0244c96d637f47fa264d441a82d3dca78889373b Fix correct bindings for bindless resource model [spirv and glsl] fixes: #6952 Problem: * Currently all bindless objects are placed in the same set (fine) and same binding (incorrect behavior for vulkan). This is incorrect since as per [spec](https://registry.khronos.org/vulkan/specs/latest/man/html/VkDescriptorType.html), only 1 resource type may be written to each index inside a set (these rules are loosened with VK_EXT_mutable_descriptor_type) * This means currently generated bindings do not work in practice if we (for example) use `Sampler2D.Handle` and `Texture1D.Handle` in a shader since we would place 2 incompatible objects in the same binding-index and set. Solution: * `__getDynamicResourceHeap` was modified to allow bindings to chosen dynamically for a descriptor * use `IOpaqueDescriptor` to check compile-time information of resource types so that we can identify different resources * Using this information of `IOpaqueDescriptor`, we modify `defaultGetDescriptorFromHandle` to provide a binding model (1 resource per binding-index) which produces legal spirv/glsl. * To support `VK_EXT_mutable_descriptor_type` the function `defaultGetDescriptorFromHandle` has a set of options (`BindlessDescriptorOptions`) for a user to pick-from to support their binding model. Capabilities are not used here for flexibility purposes (specifically old shaders mixed with modern vulkan extensions). Other changes: * Added `TexelBuffer` DescriptorKind to aid in generating correct bindings * format code * Add to docs bindless changes, make AccelerationStructure use its handle directly, adjust tests accordingly --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com> 2025-01-10T18:57:04+00:00 Yong He yonghe@outlook.com 2025-01-10T18:57:04+00:00 urn:sha1:5290c580632cfb56847b863a32dc020a21d1c93e * Initial implementation of `ResourcePtr<T>`. * Update docs * Fix build error. * Add more discussion. * Update documentation. * Update TOC. * Fix. * Fix. * Add test case for custom `getResourceFromBindlessHandle`. * Add namehint to generated descriptor heap param. * Fix. * Fix. * format code * Rename to `DescriptorHandle`, and add `T.Handle` alias. * Fix compiler error. * Fix. * Fix build. * Renames. * Fix documentation. * Documentation fix. --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>