dramatic cleanup of threading code

platform_all/4ed_link_system_functions.cpp

@@ -11,7 +11,7 @@
 
 // TODO(allen): Should auto-gen this!
 
-#define SYSLINK(name) system->name = system_##name
+#define SYSLINK(name) sysfunc.name = system_##name
 
 internal void
 link_system_code(System_Functions *system){

platform_all/4ed_work_queues.cpp

@@ -9,6 +9,28 @@
 
 // TOP
 
+struct Thread_Context{
+    u32 job_id;
+    b32 running;
+    b32 cancel;
+    
+    Work_Queue *queue;
+    u32 id;
+    u32 group_id;
+    u32 windows_id;
+    Thread thread;
+};
+
+struct Thread_Group{
+    Thread_Context *threads;
+    i32 count;
+    
+    Unbounded_Work_Queue queue;
+    
+    i32 cancel_lock0;
+    i32 cancel_cv0;
+};
+
 struct Threading_Vars{
     Thread_Memory *thread_memory;
     Work_Queue queues[THREAD_GROUP_COUNT];
@@ -28,8 +50,10 @@ Sys_Release_Lock_Sig(system_release_lock){
     system_release_lock(&threadvars.locks[id]);
 }
 
-internal void
+internal
-job_thread_proc(System_Functions *system, Thread_Context *thread){
+PLAT_THREAD_SIG(job_thread_proc){
+    Thread_Context *thread = (Thread_Context*)ptr;
+    
     Work_Queue *queue = threadvars.queues + thread->group_id;
     Thread_Group *group = threadvars.groups + thread->group_id;
     
@@ -66,7 +90,7 @@ job_thread_proc(System_Functions *system, Thread_Context *thread){
                 if (safe_running_thread == THREAD_NOT_ASSIGNED){
                     thread->job_id = full_job->id;
                     thread->running = true;
-                    full_job->job.callback(system, thread, thread_memory, full_job->job.data);
+                    full_job->job.callback(&sysfunc, thread, thread_memory, full_job->job.data);
                     system_schedule_step();
                     thread->running = false;
                     

platform_linux/linux_4ed.cpp

@@ -76,6 +76,7 @@
 #include <linux/fs.h>
 #include <linux/input.h>
 
+#include "4ed_link_system_functions.cpp"
 
 //
 // Linux macros
@@ -112,34 +113,15 @@ struct Linux_Coroutine {
     b32 done;
 };
 
-struct Thread_Context{
+//
-    u32 job_id;
+// Linux forward declarations
-    b32 running;
+//
-    b32 cancel;
 
-    Work_Queue *queue;
+internal void        LinuxScheduleStep(void);
-    u32 id;
-    u32 group_id;
-    pthread_t handle;
-};
 
-struct Thread_Group{
+internal void        LinuxStringDup(String*, void*, size_t);
-    Thread_Context *threads;
+internal void        LinuxToggleFullscreen(Display*, Window);
-    i32 count;
+internal void        LinuxFatalErrorMsg(const char* msg);
-    
-    Unbounded_Work_Queue queue;
-    
-    i32 cancel_lock0;
-    i32 cancel_cv0;
-};
-
-struct Mutex{
-    pthread_mutex_t crit;
-};
-
-struct Condition_Variable{
-    pthread_cond_t cv;
-};
 
 struct Linux_Vars{
     Display *XDisplay;
@@ -195,7 +177,6 @@ struct Linux_Vars{
     i32 dpi_x, dpi_y;
     
     Plat_Settings settings;
-    System_Functions system;
     App_Functions app;
     Custom_API custom_api;
     b32 vsync;
@@ -208,30 +189,85 @@ struct Linux_Vars{
 // Linux globals
 //
 
+global System_Functions sysfunc;
 global Linux_Vars linuxvars;
 global Application_Memory memory_vars;
 
-//
+////////////////////////////////
-// Linux forward declarations
-//
 
-internal void        LinuxScheduleStep(void);
+internal Plat_Handle
+handle_sem(sem_t *sem){
+    return(*(Plat_Handle*)&sem);
+}
 
-internal Plat_Handle LinuxSemToHandle(sem_t*);
+internal sem_t*
-internal sem_t*      LinuxHandleToSem(Plat_Handle);
+handle_sem(Plat_Handle h){
+    return(*(sem_t**)&h);
+}
 
-internal Plat_Handle LinuxFDToHandle(int);
+internal Plat_Handle
-internal int         LinuxHandleToFD(Plat_Handle);
+handle_fd(int fd){
+    return(*(Plat_Handle*)&fd);
+}
 
-internal void        LinuxStringDup(String*, void*, size_t);
+internal int
-internal void        LinuxToggleFullscreen(Display*, Window);
+handle_fd(Plat_Handle h){
-internal void        LinuxFatalErrorMsg(const char* msg);
+    return(*(int*)&h);
+}
 
-internal             Sys_Acquire_Lock_Sig(system_acquire_lock);
+////////////////////////////////
-internal             Sys_Release_Lock_Sig(system_release_lock);
 
-internal void        system_wait_cv(i32, i32);
+struct Thread{
-internal void        system_signal_cv(i32, i32);
+    pthread_t t;
+};
+
+struct Mutex{
+    pthread_mutex_t crit;
+};
+
+struct Condition_Variable{
+    pthread_cond_t cv;
+};
+
+internal void
+system_acquire_lock(Mutex *m){
+    pthread_mutex_lock(m->crit);
+}
+
+internal void
+system_release_lock(Mutex *m){
+    pthread_mutex_unlock(m->crit);
+}
+
+internal void
+system_wait_cv(Condition_Variable *cv, Mutex *m){
+    pthread_cond_wait(cv->cv, m->crit);
+}
+
+internal void
+system_signal_cv(Condition_Variable *cv, Mutex *m){
+    pthread_cond_signal(cv->cv);
+}
+
+// HACK(allen): Reduce this down to just one layer of call.
+internal void
+system_schedule_step(){
+    LinuxScheduleStep();
+}
+
+internal void
+system_wait_on(Plat_Handle handle){
+    sem_wait(handle_sem(handle));
+}
+
+internal void
+system_release_semaphore(Plat_Handle handle){
+    sem_post(handle_sem(handle));
+}
+
+#define PLAT_THREAD_SIG(n) void* n(void *ptr)
+
+////////////////////////////////
 
 internal
 Sys_Show_Mouse_Cursor_Sig(system_show_mouse_cursor){
@@ -482,56 +518,8 @@ Sys_CLI_End_Update_Sig(system_cli_end_update){
     return(close_me);
 }
 
-//
-// Multithreading
-//
-
-internal void
-system_acquire_lock(Mutex *m){
-    pthread_mutex_lock(m->crit);
-}
-
-internal void
-system_release_lock(Mutex *m){
-    pthread_mutex_unlock(m->crit);
-}
-
-internal void
-system_wait_cv(Condition_Variable *cv, Mutex *m){
-    pthread_cond_wait(cv->cv, m->crit);
-}
-
-internal void
-system_signal_cv(Condition_Variable *cv, Mutex *m){
-    pthread_cond_signal(cv->cv);
-}
-
-// HACK(allen): Reduce this down to just one layer of call.
-internal void
-system_schedule_step(){
-    LinuxScheduleStep();
-}
-
-internal void
-system_wait_on(Plat_Handle handle){
-    sem_wait(LinuxHandleToSem(handle));
-}
-
-internal void
-system_release_semaphore(Plat_Handle handle){
-    sem_post(LinuxHandleToSem(handle));
-}
-
 #include "4ed_work_queues.cpp"
 
-internal void*
-JobThreadProc(void* lpParameter){
-    Thread_Context *thread = (Thread_Context*)lpParameter;
-    job_thread_proc(&linuxvars.system, thread);
-    InvalidCodePath;
-    return(0);
-}
-
 //
 // Linux rendering/font system functions
 //
@@ -585,7 +573,7 @@ LinuxLoadRenderCode(){
 
 internal void
 LinuxRedrawTarget(){
-    launch_rendering(&linuxvars.system, &linuxvars.target);
+    launch_rendering(&sysfunc, &linuxvars.target);
     //glFlush();
     glXSwapBuffers(linuxvars.XDisplay, linuxvars.XWindow);
 }
@@ -1077,26 +1065,6 @@ LinuxPushKey(Key_Code code, Key_Code chr, Key_Code chr_nocaps, b8 (*mods)[MDFR_I
 // Misc utility funcs
 //
 
-internal Plat_Handle
-LinuxSemToHandle(sem_t* sem){
-    return *(Plat_Handle*)&sem;
-}
-
-internal sem_t*
-LinuxHandleToSem(Plat_Handle h){
-    return *(sem_t**)&h;
-}
-
-internal Plat_Handle
-LinuxFDToHandle(int fd){
-    return *(Plat_Handle*)&fd;
-}
-
-internal int
-LinuxHandleToFD(Plat_Handle h){
-    return *(int*)&h;
-}
-
 internal void
 LinuxStringDup(String* str, void* data, size_t size){
     if (str->memory_size < size){
@@ -1946,7 +1914,7 @@ main(int argc, char **argv){
         return 99;
     }
     
-    link_system_code(&linuxvars.system);
+    link_system_code(&sysfunc);
     LinuxLoadRenderCode();
     
     memory_vars.vars_memory_size   = MB(2);
@@ -1988,7 +1956,7 @@ main(int argc, char **argv){
     i32 *file_count;
     i32 output_size;
     
-    output_size = linuxvars.app.read_command_line(&linuxvars.system, &memory_vars, current_directory, &linuxvars.settings, &files, &file_count, clparams);
+    output_size = linuxvars.app.read_command_line(&sysfunc, &memory_vars, current_directory, &linuxvars.settings, &files, &file_count, clparams);
     
     if (output_size > 0){
         LOGF("%.*s", output_size, (char*)memory_vars.target_memory);
@@ -2099,7 +2067,7 @@ main(int argc, char **argv){
         memory->id = thread->id;
         
         thread->queue = &threadvars.queues[BACKGROUND_THREADS];
-        pthread_create(&thread->handle, NULL, &JobThreadProc, thread);
+        pthread_create(&thread->handle, NULL, &job_thread_proc, thread);
     }
     
     initialize_unbounded_queue(&threadvars.groups[BACKGROUND_THREADS].queue);
@@ -2208,7 +2176,7 @@ main(int argc, char **argv){
     // Font System Init
     //
     
-    system_font_init(&linuxvars.system.font, 0, 0, linuxvars.settings.font_size, linuxvars.settings.use_hinting);
+    system_font_init(&sysfunc.font, 0, 0, linuxvars.settings.font_size, linuxvars.settings.use_hinting);
     
     //
     // Epoll init
@@ -2241,7 +2209,7 @@ main(int argc, char **argv){
     
     XAddConnectionWatch(linuxvars.XDisplay, &LinuxX11ConnectionWatch, NULL);
     
-    linuxvars.app.init(&linuxvars.system, &linuxvars.target, &memory_vars, linuxvars.clipboard_contents, current_directory, linuxvars.custom_api);
+    linuxvars.app.init(&sysfunc, &linuxvars.target, &memory_vars, linuxvars.clipboard_contents, current_directory, linuxvars.custom_api);
     
     LinuxResizeTarget(window_width, window_height);
     
@@ -2319,14 +2287,7 @@ main(int argc, char **argv){
             linuxvars.last_step = system_now_time();
             
             if (linuxvars.input.first_step || !linuxvars.has_xfixes){
-                XConvertSelection(
+                XConvertSelection(linuxvars.XDisplay, linuxvars.atom_CLIPBOARD, linuxvars.atom_UTF8_STRING, linuxvars.atom_CLIPBOARD, linuxvars.XWindow, CurrentTime);
-                    linuxvars.XDisplay,
-                    linuxvars.atom_CLIPBOARD,
-                    linuxvars.atom_UTF8_STRING,
-                    linuxvars.atom_CLIPBOARD,
-                    linuxvars.XWindow,
-                    CurrentTime
-                    );
             }
             
             Application_Step_Result result = {};
@@ -2342,14 +2303,7 @@ main(int argc, char **argv){
             
             b32 keep_running = linuxvars.keep_running;
             
-            linuxvars.app.step(
+            linuxvars.app.step(&sysfunc, &linuxvars.target, &memory_vars, &linuxvars.input, &result, clparams);
-                &linuxvars.system,
-                &linuxvars.target,
-                &memory_vars,
-                &linuxvars.input,
-                &result,
-                clparams
-                );
             
             if (result.perform_kill){
                 break;

platform_linux/linux_4ed_fonts.cpp

@@ -71,7 +71,7 @@ Sys_Font_Get_Render_Data_By_ID_Sig(system_font_get_render_data_by_id){
 
 internal
 Sys_Font_Load_Page_Sig(system_font_load_page){
-    system_set_page(&linuxvars.system, &linux_fonts.part, font, page, page_number, linuxvars.settings.font_size, linuxvars.settings.use_hinting);
+    system_set_page(&sysfunc, &linux_fonts.part, font, page, page_number, linuxvars.settings.font_size, linuxvars.settings.use_hinting);
 }
 
 internal
@@ -157,7 +157,7 @@ Sys_Font_Init_Sig(system_font_init){
         if (i < font_count_max){
             Render_Font *render_font = &linux_fonts.fonts[i];
             
-            system_set_font(&linuxvars.system, &linux_fonts.part, render_font, ptr->c_filename, font_size, use_hinting);
+            system_set_font(&sysfunc, &linux_fonts.part, render_font, ptr->c_filename, font_size, use_hinting);
         }
         
         ++font_count;

platform_win32/win32_4ed.cpp

@@ -135,38 +135,7 @@ enum CV_ID{
     CV_COUNT
 };
 
-struct Thread_Context{
-    u32 job_id;
-    b32 running;
-    b32 cancel;
-    
-    Work_Queue *queue;
-    u32 id;
-    u32 group_id;
-    u32 windows_id;
-    HANDLE handle;
-};
-
-struct Thread_Group{
-    Thread_Context *threads;
-    i32 count;
-    
-    Unbounded_Work_Queue queue;
-    
-    i32 cancel_lock0;
-    i32 cancel_cv0;
-};
-
-struct Mutex{
-    CRITICAL_SECTION crit;
-};
-
-struct Condition_Variable{
-    CONDITION_VARIABLE cv;
-};
-
 struct Win32_Vars{
-    System_Functions system;
     App_Functions app;
     Custom_API custom_api;
     HMODULE app_code;
@@ -208,9 +177,79 @@ struct Win32_Vars{
     
 };
 
+global System_Functions sysfunc;
 global Win32_Vars win32vars;
 global Application_Memory memory_vars;
 
+////////////////////////////////
+
+internal HANDLE
+handle_type(Plat_Handle h){
+    HANDLE result;
+    memcpy(&result, &h, sizeof(result));
+    return(result);
+}
+
+internal Plat_Handle
+handle_type(HANDLE h){
+    Plat_Handle result = {0};
+    memcpy(&result, &h, sizeof(h));
+    return(result);
+}
+
+////////////////////////////////
+
+struct Thread{
+    HANDLE t;
+};
+
+struct Mutex{
+    CRITICAL_SECTION crit;
+};
+
+struct Condition_Variable{
+    CONDITION_VARIABLE cv;
+};
+
+internal void
+system_acquire_lock(Mutex *m){
+    EnterCriticalSection(&m->crit);
+}
+
+internal void
+system_release_lock(Mutex *m){
+    LeaveCriticalSection(&m->crit);
+}
+
+internal void
+system_wait_cv(Condition_Variable *cv, Mutex *lock){
+    SleepConditionVariableCS(&cv->cv, &lock->crit, INFINITE);
+}
+
+internal void
+system_signal_cv(Condition_Variable *cv, Mutex *lock){
+    WakeConditionVariable(&cv->cv);
+}
+
+internal void
+system_schedule_step(){
+    PostMessage(win32vars.window_handle, WM_4coder_ANIMATE, 0, 0);
+}
+
+internal void
+system_wait_on(Plat_Handle handle){
+    WaitForSingleObject(handle_type(handle), INFINITE);
+}
+
+internal void
+system_release_semaphore(Plat_Handle handle){
+    ReleaseSemaphore(handle_type(handle), 1, 0);
+}
+
+#define PLAT_THREAD_SIG(n) DWORD CALL_CONVENTION n(LPVOID ptr)
+
+////////////////////////////////
+
 //
 // 4ed path
 //
@@ -254,40 +293,6 @@ Sys_Log_Sig(system_log){
     }
 }
 
-//
-// Helpers
-//
-
-internal HANDLE
-Win32Handle(Plat_Handle h){
-    HANDLE result;
-    memcpy(&result, &h, sizeof(result));
-    return(result);
-}
-
-internal Plat_Handle
-Win32Handle(HANDLE h){
-    Plat_Handle result = {0};
-    Assert(sizeof(Plat_Handle) >= sizeof(h));
-    memcpy(&result, &h, sizeof(h));
-    return(result);
-}
-
-internal void*
-Win32Ptr(Plat_Handle h){
-    void *result;
-    memcpy(&result, &h, sizeof(result));
-    return(result);
-}
-
-internal Plat_Handle
-Win32Ptr(void *h){
-    Plat_Handle result = {0};
-    memcpy(&result, &h, sizeof(h));
-    return(result);
-}
-
-
 //
 // Memory (not exposed to application, but needed in system_shared.cpp)
 //
@@ -333,55 +338,8 @@ Sys_Memory_Free_Sig(system_memory_free){
     VirtualFree(ptr, 0, MEM_RELEASE);
 }
 
-//
-// Multithreading
-//
-
-internal void
-system_acquire_lock(Mutex *m){
-    EnterCriticalSection(&m->crit);
-}
-
-internal void
-system_release_lock(Mutex *m){
-    LeaveCriticalSection(&m->crit);
-}
-
-internal void
-system_wait_cv(Condition_Variable *cv, Mutex *lock){
-    SleepConditionVariableCS(&cv->cv, &lock->crit, INFINITE);
-}
-
-internal void
-system_signal_cv(Condition_Variable *cv, Mutex *lock){
-    WakeConditionVariable(&cv->cv);
-}
-
-internal void
-system_schedule_step(){
-    PostMessage(win32vars.window_handle, WM_4coder_ANIMATE, 0, 0);
-}
-
-internal void
-system_wait_on(Plat_Handle handle){
-    WaitForSingleObject(Win32Handle(handle), INFINITE);
-}
-
-internal void
-system_release_semaphore(Plat_Handle handle){
-    ReleaseSemaphore(Win32Handle(handle), 1, 0);
-}
-
 #include "4ed_work_queues.cpp"
 
-internal DWORD CALL_CONVENTION
-JobThreadProc(LPVOID lpParameter){
-    Thread_Context *thread = (Thread_Context*)lpParameter;
-    job_thread_proc(&win32vars.system, thread);
-    InvalidCodePath;
-    return(0);
-}
-
 //
 // Coroutines
 //
@@ -422,7 +380,7 @@ Sys_Create_Coroutine_Sig(system_create_coroutine){
     
     fiber = CreateFiber(0, Win32CoroutineMain, coroutine);
     
-    coroutine->plat_handle = Win32Handle(fiber);
+    coroutine->plat_handle = handle_type(fiber);
     coroutine->func = func;
     
     return(coroutine);
@@ -433,7 +391,7 @@ Sys_Launch_Coroutine_Sig(system_launch_coroutine){
     Win32_Coroutine *c = (Win32_Coroutine*)coroutine;
     void *fiber;
     
-    fiber = Win32Handle(coroutine->plat_handle);
+    fiber = handle_type(coroutine->plat_handle);
     coroutine->yield_handle = GetCurrentFiber();
     coroutine->in = in;
     coroutine->out = out;
@@ -459,7 +417,7 @@ Sys_Resume_Coroutine_Sig(system_resume_coroutine){
     coroutine->in = in;
     coroutine->out = out;
     
-    fiber = Win32Ptr(coroutine->plat_handle);
+    fiber = handle_type(coroutine->plat_handle);
     
     SwitchToFiber(fiber);
     
@@ -1207,7 +1165,7 @@ Win32KeycodeInit(){
 
 internal void
 Win32RedrawScreen(HDC hdc){
-    launch_rendering(&win32vars.system, &win32vars.target);
+    launch_rendering(&sysfunc, &win32vars.target);
     glFlush();
     SwapBuffers(hdc);
 }
@@ -1677,7 +1635,7 @@ WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdS
     Thread_Memory thread_memory[ArrayCount(background)];
     threadvars.thread_memory = thread_memory;
     
-    threadvars.queues[BACKGROUND_THREADS].semaphore =Win32Handle(CreateSemaphore(0, 0, threadvars.groups[BACKGROUND_THREADS].count, 0));
+    threadvars.queues[BACKGROUND_THREADS].semaphore =handle_type(CreateSemaphore(0, 0, threadvars.groups[BACKGROUND_THREADS].count, 0));
     
     u32 creation_flag = 0;
     for (i32 i = 0; i < threadvars.groups[BACKGROUND_THREADS].count; ++i){
@@ -1691,7 +1649,7 @@ WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdS
         
         thread->queue = &threadvars.queues[BACKGROUND_THREADS];
         
-        thread->handle = CreateThread(0, 0, JobThreadProc, thread, creation_flag, (LPDWORD)&thread->windows_id);
+        thread->thread.t = CreateThread(0, 0, job_thread_proc, thread, creation_flag, (LPDWORD)&thread->windows_id);
     }
     
     initialize_unbounded_queue(&threadvars.groups[BACKGROUND_THREADS].queue);
@@ -1754,11 +1712,9 @@ WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdS
     }
     
     
-    link_system_code(&win32vars.system);
+    link_system_code(&sysfunc);
     Win32LoadRenderCode();
     
-    System_Functions *system = &win32vars.system;
-    
     //
     // Shared Systems Init
     //
@@ -1785,7 +1741,7 @@ WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdS
     char **files = 0;
     i32 *file_count = 0;
     
-    win32vars.app.read_command_line(system, &memory_vars, current_directory, &win32vars.settings, &files, &file_count, clparams);
+    win32vars.app.read_command_line(&sysfunc, &memory_vars, current_directory, &win32vars.settings, &files, &file_count, clparams);
     
     sysshared_filter_real_files(files, file_count);
     LOG("Loaded system code, read command line.\n");
@@ -1907,7 +1863,7 @@ WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdS
     //
     
     LOG("Initializing fonts\n");
-    system_font_init(&system->font, 0, 0, win32vars.settings.font_size, win32vars.settings.use_hinting);
+    system_font_init(&sysfunc.font, 0, 0, win32vars.settings.font_size, win32vars.settings.use_hinting);
     
     //
     // Misc System Initializations
@@ -1956,7 +1912,7 @@ WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdS
     //
     
     LOG("Initializing application variables\n");
-    win32vars.app.init(system, &win32vars.target, &memory_vars, win32vars.clipboard_contents, current_directory, win32vars.custom_api);
+    win32vars.app.init(&sysfunc, &win32vars.target, &memory_vars, win32vars.clipboard_contents, current_directory, win32vars.custom_api);
     
     system_memory_free(current_directory.str, 0);
     
@@ -2157,7 +2113,7 @@ WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdS
             win32vars.send_exit_signal = 0;
         }
         
-        win32vars.app.step(system, &win32vars.target, &memory_vars, &input, &result, clparams);
+        win32vars.app.step(&sysfunc, &win32vars.target, &memory_vars, &input, &result, clparams);
         
         if (result.perform_kill){
             keep_playing = 0;

platform_win32/win32_4ed_fonts.cpp

@@ -71,7 +71,7 @@ Sys_Font_Get_Render_Data_By_ID_Sig(system_font_get_render_data_by_id){
 
 internal
 Sys_Font_Load_Page_Sig(system_font_load_page){
-    system_set_page(&win32vars.system, &win32_fonts.part, font, page, page_number, win32vars.settings.font_size, win32vars.settings.use_hinting);
+    system_set_page(&sysfunc, &win32_fonts.part, font, page, page_number, win32vars.settings.font_size, win32vars.settings.use_hinting);
 }
 
 internal
@@ -157,7 +157,7 @@ Sys_Font_Init_Sig(system_font_init){
         if (i < font_count_max){
             Render_Font *render_font = &win32_fonts.fonts[i];
             
-            system_set_font(&win32vars.system, &win32_fonts.part, render_font, ptr->c_filename, font_size, use_hinting);
+            system_set_font(&sysfunc, &win32_fonts.part, render_font, ptr->c_filename, font_size, use_hinting);
         }
         
         ++font_count;