fix: Linux build

- Prepare for supporting Xlib and Wayland (in the future), by having a
  option for 'use_xlib'
- Fixed a few compile errors

meson.build

@@ -23,7 +23,7 @@ endif
 
 # Debug specific flags
 if buildtype == 'debug' or buildtype == 'debugoptimized'
-  add_project_arguments([ '-DDEBUG'], language : 'c')
+  add_project_arguments([ '-DVY_DEBUG'], language : 'c')
 endif
 
 # Gather dependencies
@@ -31,6 +31,12 @@ thread_dep = dependency('threads')
 m_dep = compiler.find_library('m', required : false)
 vk_dep = dependency('vulkan', required : false)
 
+windowing_dep = []
+if get_option('use_xlib')
+  windowing_dep = dependency('x11', required : true)
+  add_project_arguments(['-DVY_USE_XLIB'], language : 'c')
+endif
+
 # glfw_proj = subproject('glfw', default_options : 'default_library=static')
 # glfw_dep = glfw_proj.get_variable('glfw_dep')
 
@@ -59,7 +65,7 @@ runtime_lib = library('vyrt',
 
   # Contrib Sources
   'contrib/xxhash/xxhash.c',
-  dependencies : [thread_dep, m_dep],
+  dependencies : [thread_dep, m_dep, windowing_dep],
   include_directories : incdir,
   c_pch : 'pch/rt_pch.h')
 

meson.options

@@ -0,0 +1 @@
+option('use_xlib', type : 'boolean', value : false, description : 'Use Xlib for window creation under linux')

meson_options.txt

@@ -0,0 +1 @@
+meson.options

pch/rt_pch.h

@@ -1 +1,3 @@
-#include <Windows.h>
+#ifdef _WIN32
+    #include <Windows.h>
+#endif

src/game/voyage.c

@@ -2,8 +2,8 @@
 
 #ifdef _WIN32
 
-#define WIN32_LEAN_AND_MEAN
-#include <Windows.h>
+    #define WIN32_LEAN_AND_MEAN
+    #include <Windows.h>
 
 int WINAPI wWinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
@@ -12,4 +12,10 @@ int WINAPI wWinMain(HINSTANCE hInstance,
     return vyWin32Entry(hInstance, hPrevInstance, pCmdLine, nCmdShow);
 }
 
+#elif defined(__linux__)
+
+int main(int argc, char **argv) {
+    return 0;
+}
+
 #endif

src/renderer/vk/init.c

@@ -1,17 +1,17 @@
-#include <stdlib.h>
 #include <malloc.h>
+#include <stdlib.h>
 
 #define VY_VK_DONT_DEFINE_GPU_GLOBAL
 #include "gpu.h"
 
-#include "runtime/runtime.h"
-#include "runtime/renderer_api.h"
 #include "runtime/config.h"
+#include "runtime/renderer_api.h"
+#include "runtime/runtime.h"
 
-VY_CVAR_I(r_EnableAPIAllocTracking,
-          "Enable tracking of allocations done by the vulkan api. [0/1] Default: 0",
-          0);
-
+VY_CVAR_I(
+    r_EnableAPIAllocTracking,
+    "Enable tracking of allocations done by the vulkan api. [0/1] Default: 0",
+    0);
 
 typedef struct {
     size_t allocated;
@@ -25,8 +25,7 @@ vy_vk_gpu g_gpu;
 static VkAllocationCallbacks _tracking_alloc_cbs;
 static vy_vk_alloc_stats _alloc_stats;
 
-static const char *AllocationScopeToString(VkSystemAllocationScope scope)
-{
+static const char *AllocationScopeToString(VkSystemAllocationScope scope) {
     switch (scope) {
     case VK_SYSTEM_ALLOCATION_SCOPE_COMMAND:
         return "COMMAND";
@@ -52,7 +51,10 @@ static void LogAllocationStats(const vy_vk_alloc_stats *stats) {
           stats->max_alignment);
 }
 
-static void *TrackAllocation(void *userData, size_t size, size_t alignment, VkSystemAllocationScope scope) {
+static void *TrackAllocation(void *userData,
+                             size_t size,
+                             size_t alignment,
+                             VkSystemAllocationScope scope) {
     vy_vk_alloc_stats *stats = userData;
     if (alignment > stats->max_alignment)
         stats->max_alignment = alignment;
@@ -63,7 +65,11 @@ static void *TrackAllocation(void *userData, size_t size, size_t alignment, VkSy
           alignment,
           AllocationScopeToString(scope));
     LogAllocationStats(stats);
+#ifdef _WIN32
     return _aligned_malloc(size, alignment);
+#else
+    return aligned_alloc(alignment, size);
+#endif
 }
 
 static void *TrackReallocation(void *userData,
@@ -81,7 +87,7 @@ static void *TrackReallocation(void *userData,
           alignment,
           AllocationScopeToString(scope));
     LogAllocationStats(stats);
-    return _aligned_realloc(original, size, alignment);
+    return realloc(original, size);
 }
 
 static void TrackFree(void *userData, void *memory) {
@@ -96,8 +102,8 @@ VY_DLLEXPORT int vyInit(const vy_renderer_init_info *info) {
 
     vyRegisterCVAR(&r_EnableAPIAllocTracking);
 
-    _tracking_alloc_cbs.pUserData = &_alloc_stats;
-    _tracking_alloc_cbs.pfnAllocation = TrackAllocation;
+    _tracking_alloc_cbs.pUserData       = &_alloc_stats;
+    _tracking_alloc_cbs.pfnAllocation   = TrackAllocation;
     _tracking_alloc_cbs.pfnReallocation = TrackReallocation;
     _tracking_alloc_cbs.pfnFree         = TrackFree;
 
@@ -110,11 +116,11 @@ VY_DLLEXPORT int vyInit(const vy_renderer_init_info *info) {
     VkResult result;
 
     VkApplicationInfo app_info = {
-        .apiVersion = VK_API_VERSION_1_0,
+        .apiVersion         = VK_API_VERSION_1_0,
         .applicationVersion = 0x00001000,
-        .engineVersion = 0x00001000,
-        .pEngineName = "voyage",
-        .pApplicationName = "Voyage",
+        .engineVersion      = 0x00001000,
+        .pEngineName        = "voyage",
+        .pApplicationName   = "Voyage",
     };
 
     VkInstanceCreateInfo instance_info = {

src/runtime/renderer_api.h

@@ -10,12 +10,17 @@
 #ifdef _WIN32
 struct HINSTANCE__;
 struct HWND__;
+#elif defined(VY_USE_XLIB)
+struct _XDisplay;
 #endif
 
 struct vy_renderer_init_info_s {
 #ifdef _WIN32
     struct HINSTANCE__ *hInstance;
     struct HWND__ *hWnd;
+#elif defined(VY_USE_XLIB)
+    struct _XDisplay *display;
+    unsigned long window;
 #endif
 };
 

src/runtime/threading.c

@@ -2,18 +2,18 @@
 #include "runtime.h"
 
 #ifdef _WIN32
-#define WIN32_LEAN_AND_MEAN
-#include <Windows.h>
+    #define WIN32_LEAN_AND_MEAN
+    #include <Windows.h>
 
 struct vy_mutex_s {
     HANDLE handle;
     ptrdiff_t next_reusable;
 };
 
-#define MAX_MUTEX 1024
+    #define MAX_MUTEX 1024
 static vy_mutex _mutex[MAX_MUTEX];
 static ptrdiff_t _first_reusable = MAX_MUTEX;
-static ptrdiff_t _next       = 0;
+static ptrdiff_t _next           = 0;
 
 VY_DLLEXPORT vy_mutex *vyCreateMutex(void) {
     if (_first_reusable < MAX_MUTEX) {
@@ -51,7 +51,7 @@ VY_DLLEXPORT bool vyUnlockMutex(vy_mutex *mutex) {
 
 #elif defined(__linux__)
 
-#include <pthread.h>
+    #include <pthread.h>
 struct vy_mutex_s {
     pthread_mutex_t handle;
     ptrdiff_t next_reusable;
@@ -70,7 +70,7 @@ VY_DLLEXPORT vy_mutex *vyCreateMutex(void) {
     } else if (_next < MAX_MUTEX) {
         vy_mutex *mtx = &_mutex[_next];
         if (pthread_mutex_init(&mtx->handle, NULL) != 0) {
-            vyLog("core", "Mutex creation failed: %u", GetLastError());
+            vyLog("core", "Mutex creation failed");
             return NULL;
         }
         mtx->next_reusable = MAX_MUTEX;