fixes: windows x86 compilation error missing VKAPI_PTR (#197)

This pr fixes windows x86 compilation error (xmake and meson.build).

In runtime/Sources/Renderer/RenderCore.cpp 
```cpp
void* VKAPI_PTR VulkanAllocationFunction(void*, std::size_t size, std::size_t alignment, VkSystemAllocationScope)
	{
		return MemManager::AlignedMalloc(alignment, size);
	}

	void* VKAPI_PTR VulkanReallocationFunction(void*, void* ptr, std::size_t size, std::size_t alignment, VkSystemAllocationScope)
	{
		return MemManager::AlignedRealloc(ptr, alignment, size);
	}

	void VKAPI_PTR VulkanFreeFunction(void*, void* ptr)
	{
		MemManager::Free(ptr);
	}
```
The log of the compilation error:  
- [meson failure
log](https://github.com/0verLighT/MacroLibX/actions/runs/21409805574/job/61643508435)
- [xmake failure
log](https://github.com/0verLighT/MacroLibX/actions/runs/21412208397/job/61651747515)

In the macrolibx VKAPI_PTR was missing, On windows x86, this caused a
compilation error.


This add some features:
- New CICD for windows meson (x64, x86, MYSYS2, clang-cl) and windows
xmake x86
- Fallback for meson.build dependency SDL2 in `subprojects/SDL2.wrap`

.github/workflows/windows.yml

@@ -16,7 +16,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [windows-latest]
-        arch: [x64]
+        arch: [x64, x86]
         mode: [release]
 
     runs-on: ${{ matrix.os }}

.github/workflows/windows_meson.yml

@@ -0,0 +1,109 @@
+name : Windows (Meson)
+
+on:
+  repository_dispatch:
+    types: [create-pull-request]
+  pull_request:
+  push:
+    paths-ignore:
+      - '.gitignore'
+      - 'LICENSE'
+      - 'README.md'
+
+jobs:
+  VisualStudio:
+    if: "!contains(github.event.head_commit.message, 'ci skip')"
+    runs-on: windows-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        platform: ['x64', 'x86']
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+
+      # Install a 32-bit Python so building related stuff work.
+      - name: Setup x86 Python
+        if: matrix.platform == 'x86'
+        uses: actions/setup-python@v6
+        with:
+          architecture: 'x86'
+          python-version: '3.12'
+
+      - name: Install Meson & Ninja
+        run: |
+          python -m pip install meson ninja
+      - uses: ilammy/msvc-dev-cmd@v1
+        with:
+          arch: ${{matrix.platform}}
+
+      - name: Compile mlx
+        run: |
+          meson setup builddir
+          meson compile -C builddir
+
+  VisualStudio-clang-cl:
+    if: "!contains(github.event.head_commit.message, 'ci skip')"
+    runs-on: windows-latest
+    strategy:
+      fail-fast: false
+    env:
+      CC: clang-cl
+      CXX: clang-cl
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+
+      - name: Install Meson & Ninja
+        run: |
+          python -m pip install meson ninja
+
+      - uses: ilammy/msvc-dev-cmd@v1
+
+      - name: Compile mlx
+        run: |
+          meson setup builddir
+          meson compile -C builddir
+          
+  MSYS2:
+    if: "!contains(github.event.head_commit.message, 'ci skip')"
+    runs-on: windows-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        platform: ['UCRT64', 'CLANG64']
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+
+      - uses: msys2/setup-msys2@v2
+        with:
+          msystem: ${{matrix.platform}}
+          install: >-
+            bison
+            dos2unix
+            flex
+            git
+          pacboy: >-
+            cc:p
+            cmake:p
+            ninja:p
+            pkgconf:p
+            python-certifi:p
+            python-pip:p
+          # Make sure Python is updated to >=3.11 (fix https://github.com/msys2/MINGW-packages/issues/17415).
+          update: true
+
+      - name: Install Meson
+        shell: msys2 {0}
+        run: |
+          python -m pip install meson 
+
+      - name: Compile mlx
+        shell: msys2 {0}
+        run: |
+          meson setup builddir
+          meson compile -C builddir

.gitignore

@@ -23,3 +23,5 @@
 objs/
 build/
 example/Test
+subprojects/*/
+subprojects/.wraplock

runtime/Sources/Renderer/RenderCore.cpp

@@ -55,17 +55,17 @@ namespace mlx
 		std::cout << std::endl;
 	}
 
-	void* VulkanAllocationFunction(void*, std::size_t size, std::size_t alignment, VkSystemAllocationScope)
+	void* VKAPI_PTR VulkanAllocationFunction(void*, std::size_t size, std::size_t alignment, VkSystemAllocationScope)
 	{
 		return MemManager::AlignedMalloc(alignment, size);
 	}
 
-	void* VulkanReallocationFunction(void*, void* ptr, std::size_t size, std::size_t alignment, VkSystemAllocationScope)
+	void* VKAPI_PTR VulkanReallocationFunction(void*, void* ptr, std::size_t size, std::size_t alignment, VkSystemAllocationScope)
 	{
 		return MemManager::AlignedRealloc(ptr, alignment, size);
 	}
 
-	void VulkanFreeFunction(void*, void* ptr)
+	void VKAPI_PTR VulkanFreeFunction(void*, void* ptr)
 	{
 		MemManager::Free(ptr);
 	}

subprojects/sdl2.wrap

@@ -0,0 +1,15 @@
+[wrap-file]
+directory = SDL2-2.32.8
+source_url = https://github.com/libsdl-org/SDL/releases/download/release-2.32.8/SDL2-2.32.8.tar.gz
+source_filename = SDL2-2.32.8.tar.gz
+source_hash = 0ca83e9c9b31e18288c7ec811108e58bac1f1bb5ec6577ad386830eac51c787e
+patch_filename = sdl2_2.32.8-1_patch.zip
+patch_url = https://wrapdb.mesonbuild.com/v2/sdl2_2.32.8-1/get_patch
+patch_hash = 5df17ea39ca418826db20e96bd821fa52b5718dac64b6225119fb6588c2744f0
+source_fallback_url = https://github.com/mesonbuild/wrapdb/releases/download/sdl2_2.32.8-1/SDL2-2.32.8.tar.gz
+wrapdb_version = 2.32.8-1
+
+[provide]
+sdl2 = sdl2_dep
+sdl2main = sdl2main_dep
+sdl2_test = sdl2_test_dep