Add Vulkan backend

.github/workflows/build.yml

@@ -19,8 +19,9 @@ jobs:
             compiler: dmd-latest
     runs-on: ${{ matrix.runs-on }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@main
       - uses: egor-tensin/vs-shell@v2
+        if: runner.os == 'Windows'
         with:
           arch: x64
       - uses: dlang-community/setup-dlang@v2
@@ -69,7 +70,7 @@ jobs:
         runs-on: [ubuntu-24.04-arm, ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.runs-on }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@main
       - uses: dlang-community/setup-dlang@v2
         with:
           compiler: ldc-master
@@ -105,7 +106,7 @@ jobs:
         runs-on: [ubuntu-24.04-arm, ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.runs-on }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@main
       - uses: dlang-community/setup-dlang@v2
         with:
           compiler: ldc-master
@@ -144,7 +145,7 @@ jobs:
       run:
         shell: bash
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@main
       - name: prepare-linux
         run: |
             pacman -Syu --noconfirm
@@ -171,3 +172,56 @@ jobs:
           dub build :texcube
           dub build :userdata
           dub build :vertexpull
+
+  build-vulkan:
+    strategy:
+      fail-fast: false
+      matrix:
+        runs-on: [ubuntu-24.04-arm, ubuntu-latest, windows-latest]
+    runs-on: ${{ matrix.runs-on }}
+    steps:
+      - uses: actions/checkout@main
+      - uses: egor-tensin/vs-shell@v2
+        if: runner.os == 'Windows'
+        with:
+          arch: x64
+      - uses: humbletim/setup-vulkan-sdk@main
+        if: runner.os == 'Windows'
+        with:
+          vulkan-query-version: 1.4.335.0
+          vulkan-components: Vulkan-Headers, Vulkan-Loader
+          vulkan-use-cache: true
+      - uses: dlang-community/setup-dlang@v2
+        with:
+          compiler: ldc-master
+      - name: prepare-linux
+        if: runner.os == 'Linux'
+        run: |
+            sudo apt-get update
+            sudo apt-get install libgl1-mesa-dev libegl1-mesa-dev mesa-common-dev xorg-dev libasound-dev libvulkan-dev
+      - name: (dub) Running shdc
+        run: dub build -c genshaders-vk
+      - name: (dub) Build sokol examples
+        working-directory: examples
+        run: |
+          dub build :blend -c vulkan
+          dub build :bufferoffsets -c vulkan
+          dub build :clear -c vulkan
+          dub build :cube -c vulkan
+          dub build :debugtext -c vulkan
+          dub build :droptest -c vulkan
+          dub build :imgui -c vulkan
+          dub build :instancing -c vulkan
+          dub build :instancingcompute -c vulkan
+          dub build :mrt -c vulkan
+          dub build :noninterleaved -c vulkan
+          dub build :nuklear -c vulkan
+          dub build :offscreen -c vulkan
+          dub build :quad -c vulkan
+          dub build :shapes -c vulkan
+          dub build :saudio -c vulkan
+          dub build :sglcontext -c vulkan
+          dub build :sglpoints -c vulkan
+          dub build :triangle -c vulkan
+          dub build :texcube -c vulkan
+          dub build :vertexpull -c vulkan

README.md

@@ -26,8 +26,8 @@ dub :triangle
 By default, the backend 3D API will be selected based on the target platform:
 
 - macOS: Metal
-- Windows: D3D11
-- Linux: GL/Wayland
+- Windows: D3D11/Vulkan
+- Linux: GL/Wayland/Vulkan
 - Wasm (LDC2 required) - WebGL2/WebGPU support
 
 #### Usage - template project
@@ -52,6 +52,7 @@ dub init -t sokol-d <project-name>
 - imgui
 - instancing
 - instancingcompute
+- nuklear
 - saudio
 - sglcontext
 - sglpoints
@@ -68,17 +69,21 @@ Available configurations:
     sokol-shared             # Shared/dynamic library build
     sokol-wayland-static     # Wayland static build for Linux
     sokol-wayland-shared     # Wayland shared build for Linux
+    sokol-vulkan             # Sokol + Vulkan Static library build
     imgui-static             # Sokol + Dear ImGui static build
     imgui-shared             # Sokol + Dear ImGui shared build
+    imgui-vulkan             # Sokol + Dear ImGui + Vulkan static build
     imgui-wgles3             # Sokol + Dear ImGui WebGL ES3 build
     imgui-wgpu               # Sokol + Dear ImGui WebGPU build
     sokol-wgles3             # WebGL ES3 build
     sokol-wgpu               # WebGPU build
     nuklear-static           # Sokol + Nuklear static build
     nuklear-shared           # Sokol + Nuklear shared build
+    nuklear-vulkan           # Sokol + Nuklear + Vulkan static build
     nuklear-wgles3           # Sokol + Nuklear WebGL ES3 build
     nuklear-wgpu             # Sokol + Nuklear WebGPU build
     genshaders               # [re]Generate shader code
+    genshaders-vk            # [re]Generate vk-shader code
 ```
 
 ## Additional Build Options

build.d

@@ -133,7 +133,7 @@ void main(string[] args) @safe
 
     // Execute build steps
     if (opts.downloadShdc)
-        buildShaders(vendorPath);
+        buildShaders(vendorPath, opts.backend);
     else if (opts.linkExample)
     {
         EmLinkOptions linkOpts = {
@@ -218,7 +218,7 @@ void getNuklear(string vendor) @safe
     }
 }
 
-void buildShaders(string vendor) @safe
+void buildShaders(string vendor, ref SokolBackend opts) @safe
 {
     immutable shdcPath = getSHDC(vendor);
     immutable shadersDir = "examples/shaders";
@@ -233,7 +233,7 @@ void buildShaders(string vendor) @safe
     else
         enum glsl = "glsl430";
 
-    immutable slangTemplate = glsl ~ ":metal_macos:hlsl5:%s:wgsl";
+    immutable slangTemplate = opts == SokolBackend.vulkan ? glsl ~ ":metal_macos:hlsl5:%s:wgsl:spirv_vk" : glsl ~ ":metal_macos:hlsl5:%s:wgsl";
 
     version (Posix)
         executeOrFail(["chmod", "+x", shdcPath], "Failed to set shader permissions", true);
@@ -278,7 +278,8 @@ enum SokolBackend
     metal,
     glcore,
     gles3,
-    wgpu
+    wgpu,
+    vulkan
 }
 
 struct LibSokolOptions
@@ -347,7 +348,8 @@ void buildLibSokol(LibSokolOptions opts) @safe
         lflags ~= opts.use_wayland ? [
             "-lwayland-client", "-lwayland-egl", "-lwayland-cursor", "-lxkbcommon"
         ] : [];
-        lflags ~= ["-lX11", "-lGL", "-lXi", "-lXcursor", "-lasound"];
+        lflags ~= opts.backend == SokolBackend.vulkan ? ["-lvulkan"] : ["-lGL"];
+        lflags ~= ["-lX11", "-lXi", "-lXcursor", "-lasound"];
         break;
     case "windows":
         cflags ~= ["/DNDEBUG", "/DIMPL", "/wd4190", "/O2"];