build: remove libvulkan buildtime dependency

.github/workflows/build-linux-arm64.yml

@@ -34,7 +34,7 @@ jobs:
         echo "deb [arch=arm64] http://ports.ubuntu.com/ubuntu-ports jammy main restricted" | sudo tee -a /etc/apt/sources.list
         echo "deb [arch=arm64] http://ports.ubuntu.com/ubuntu-ports jammy-updates main restricted" | sudo tee -a /etc/apt/sources.list
         sudo apt-get update || true
-        sudo apt-get -y install libvulkan-dev:arm64 g++-aarch64-linux-gnu gcc-aarch64-linux-gnu binutils-aarch64-linux-gnu
+        sudo apt-get -y install g++-aarch64-linux-gnu gcc-aarch64-linux-gnu binutils-aarch64-linux-gnu
     - name: Build dynamic library
       run: CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=/usr/bin/aarch64-linux-gnu-gcc cargo run -p librashader-build-script -- --profile ${{ matrix.profile }} --target aarch64-unknown-linux-gnu
     - name: Upload build artifacts

.github/workflows/build.yml

@@ -26,11 +26,6 @@ jobs:
       with:
         toolchain: nightly
         override: true
-    - name: Install Vulkan SDK
-      uses: humbletim/install-vulkan-sdk@v1.1.1
-      with:
-        version: latest
-        cache: true
     - name: Build dynamic library
       run: cargo run -p librashader-build-script -- --profile ${{ matrix.profile }}
     - name: Upload build artifacts

README.md

@@ -91,10 +91,6 @@ static GL_DEFAULT_MVP: &[f32; 16] = &[
 
 ### Building
 
-librashader requires the [Vulkan SDK](https://www.lunarg.com/vulkan-sdk/).
-
----
-
 For Rust projects, simply add the crate to your `Cargo.toml`. 
 
 ```
@@ -110,6 +106,9 @@ cargo run -p librashader-build-script -- --profile optimized
 This will output a `librashader.dll` or `librashader.so` in the target folder. Profile can be `debug`, `release`, or 
 `optimized` for full LTO.
 
+While librashader has no build-time dependencies, using `librashader_ld.h` may require headers from
+the relevant runtime graphics API.
+
 ### Writing a librashader Runtime
 
 If you wish to contribute a runtime implementation not already available, see the [librashader-runtime](https://docs.rs/librashader-runtime/latest/librashader_runtime/)

librashader-runtime-vk/Cargo.toml

@@ -25,7 +25,7 @@ spirv_cross = { package = "librashader-spirv-cross", version = "0.23" }
 rustc-hash = "1.1.0"
 bytemuck = "1.12.3"
 thiserror = "1.0.37"
-ash = { version = "0.37.1+1.3.235", features = ["linked", "debug"] }
+ash = { version = "0.37.1+1.3.235", features = ["debug"] }
 gpu-allocator = { version = "0.22.0", default-features = false, features = ["vulkan"] }
 parking_lot = "0.12.1"
 rayon = "1.6.1"

librashader.copr.spec

@@ -11,7 +11,6 @@ License:  MPL-2.0
 URL:      https://github.com/SnowflakePowered/%{name}
 %undefine _disable_source_fetch
 Source:   {{{ git_dir_pack }}}
-BuildRequires: pkgconfig(vulkan)
 BuildRequires: gcc
 BuildRequires: git
 BuildRequires: g++

pkg/librashader.pc

@@ -6,5 +6,5 @@ includedir=${exec_prefix}/include
 Name: librashader
 Description: RetroArch shaders for all
 Version: 0.2.0
-Libs: -L${libdir} -lvulkan -lrashader
+Libs: -L${libdir} -lrashader
 Cflags: -I${includedir}

pkg/librashader.spec

@@ -11,7 +11,6 @@ License:  MPL-2.0
 URL:      https://github.com/SnowflakePowered/%{name}
 %undefine _disable_source_fetch
 Source:  https://github.com/SnowflakePowered/%{name}/archive/%{commit}/%{name}-%{shortcommit}.tar.gz
-BuildRequires: pkgconfig(vulkan)
 BuildRequires: gcc
 BuildRequires: g++
 BuildRequires: ninja-build

pkg/obs/librashader.spec

@@ -9,7 +9,6 @@ URL:      https://github.com/SnowflakePowered/%{name}
 Source0:  librashader-%{version}.tar.xz
 Source1:  vendor.tar.xz
 Source2:  cargo_config
-BuildRequires: pkgconfig(vulkan)
 BuildRequires: ninja-build
 BuildRequires: patchelf
 BuildRequires: gcc