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4coder/win32_4ed.cpp

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/*
* Mr. 4th Dimention - Allen Webster
*
* 12.12.2014
*
* Win32 layer for project codename "4ed"
*
*/
// TOP
#include <assert.h>
#include "4ed_defines.h"
#if defined(FRED_SUPER)
# define FSTRING_IMPLEMENTATION
# define FSTRING_C
# include "4coder_string.h"
# include "4coder_version.h"
# include "4coder_keycodes.h"
# include "4coder_style.h"
# include "4coder_rect.h"
# include "4coder_mem.h"
# include "4cpp_lexer.h"
// TODO(allen): This is duplicated from 4coder_custom.h
// I need to work out a way to avoid this.
#define VIEW_ROUTINE_SIG(name) void name(struct Application_Links *app, int32_t view_id)
#define GET_BINDING_DATA(name) int32_t name(void *data, int32_t size)
#define _GET_VERSION_SIG(n) int32_t n(int32_t maj, int32_t min, int32_t patch)
typedef VIEW_ROUTINE_SIG(View_Routine_Function);
typedef GET_BINDING_DATA(Get_Binding_Data_Function);
typedef _GET_VERSION_SIG(_Get_Version_Function);
struct Custom_API{
View_Routine_Function *view_routine;
Get_Binding_Data_Function *get_bindings;
_Get_Version_Function *get_alpha_4coder_version;
};
typedef void Custom_Command_Function;
#include "4coder_types.h"
struct Application_Links;
# include "4coder_custom_api.h"
//# include "4coder_custom.h"
#else
# include "4coder_default_bindings.cpp"
# define FSTRING_IMPLEMENTATION
# define FSTRING_C
# include "4coder_string.h"
#endif
#include "4ed_math.h"
#include "4ed_system.h"
#include "4ed_rendering.h"
#include "4ed.h"
#include <Windows.h>
#include <GL/gl.h>
#define GL_TEXTURE_MAX_LEVEL 0x813D
#include "filetrack/4tech_file_track_win32.c"
#include "system_shared.h"
#define SUPPORT_DPI 1
#define USE_FT_FONTS 1
#define FPS 60
#define frame_useconds (1000000 / FPS)
#define WM_4coder_ANIMATE (WM_USER + 0)
//
// Win32_Vars structs
//
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 Control_Keys{
b8 l_ctrl;
b8 r_ctrl;
b8 l_alt;
b8 r_alt;
};
static Control_Keys null_control_keys;
struct Win32_Input_Chunk_Transient{
Key_Input_Data key_data;
b8 mouse_l_press, mouse_l_release;
b8 mouse_r_press, mouse_r_release;
b8 out_of_window;
i8 mouse_wheel;
b8 trying_to_kill;
};
static Win32_Input_Chunk_Transient null_input_chunk_transient = {0};
struct Win32_Input_Chunk_Persistent{
i32 mouse_x, mouse_y;
b8 mouse_l, mouse_r;
Control_Keys controls;
b8 control_keys[MDFR_INDEX_COUNT];
};
typedef struct Win32_Input_Chunk{
Win32_Input_Chunk_Transient trans;
Win32_Input_Chunk_Persistent pers;
} Win32_Input_Chunk;
typedef struct Win32_Coroutine{
Coroutine coroutine;
Win32_Coroutine *next;
i32 done;
} Win32_Coroutine;
#if FRED_INTERNAL
struct Sys_Bubble : public Bubble{
i32 line_number;
char *file_name;
};
typedef struct Sys_Bubble Sys_Bubble;
#endif
enum CV_ID{
CANCEL_CV0,
CANCEL_CV1,
CANCEL_CV2,
CANCEL_CV3,
CANCEL_CV4,
CANCEL_CV5,
CANCEL_CV6,
CANCEL_CV7,
CV_COUNT
};
typedef struct Win32_Vars{
System_Functions system;
App_Functions app;
Custom_API custom_api;
HMODULE app_code;
HMODULE custom;
Plat_Settings settings;
Work_Queue queues[THREAD_GROUP_COUNT];
Thread_Group groups[THREAD_GROUP_COUNT];
CRITICAL_SECTION locks[LOCK_COUNT];
CONDITION_VARIABLE condition_vars[CV_COUNT];
Thread_Memory *thread_memory;
Win32_Coroutine coroutine_data[18];
Win32_Coroutine *coroutine_free;
Win32_Input_Chunk input_chunk;
b32 lctrl_lalt_is_altgr;
b32 got_useful_event;
b32 full_screen;
b32 do_toggle;
WINDOWPLACEMENT GlobalWindowPosition;
b32 send_exit_signal;
HCURSOR cursor_ibeam;
HCURSOR cursor_arrow;
HCURSOR cursor_leftright;
HCURSOR cursor_updown;
String clipboard_contents;
b32 next_clipboard_is_self;
DWORD clipboard_sequence;
HWND window_handle;
Render_Target target;
Partition font_part;
#if SUPPORT_DPI
i32 dpi_x, dpi_y;
#endif
u64 count_per_usecond;
b32 first;
i32 running_cli;
#if FRED_INTERNAL
CRITICAL_SECTION DEBUG_sysmem_lock;
Sys_Bubble internal_bubble;
#endif
} Win32_Vars;
globalvar Win32_Vars win32vars;
globalvar Application_Memory memory_vars;
//
// 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)
//
internal
Sys_Get_Memory_Sig(system_get_memory_){
void *ptr = 0;
if (size > 0){
#if FRED_INTERNAL
ptr = VirtualAlloc(0, size + sizeof(Sys_Bubble), MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
Sys_Bubble *bubble = (Sys_Bubble*)ptr;
bubble->flags = 0;
bubble->line_number = line_number;
bubble->file_name = file_name;
bubble->size = size;
EnterCriticalSection(&win32vars.DEBUG_sysmem_lock);
insert_bubble(&win32vars.internal_bubble, bubble);
LeaveCriticalSection(&win32vars.DEBUG_sysmem_lock);
ptr = bubble + 1;
#else
ptr = VirtualAlloc(0, size, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
#endif
}
return(ptr);
}
internal
Sys_Free_Memory_Sig(system_free_memory){
if (block){
#if FRED_INTERNAL
Sys_Bubble *bubble = ((Sys_Bubble*)block) - 1;
EnterCriticalSection(&win32vars.DEBUG_sysmem_lock);
remove_bubble(bubble);
LeaveCriticalSection(&win32vars.DEBUG_sysmem_lock);
VirtualFree(bubble, 0, MEM_RELEASE);
#else
VirtualFree(block, 0, MEM_RELEASE);
#endif
}
}
#define Win32GetMemory(size) system_get_memory_(size, __LINE__, __FILE__)
#define Win32FreeMemory(ptr) system_free_memory(ptr)
#define Win32ScratchPartition sysshared_scratch_partition
#define Win32ScratchPartitionGrow sysshared_partition_grow
#define Win32ScratchPartitionDouble sysshared_partition_double
#if FRED_INTERNAL
internal Bubble*
INTERNAL_system_sentinel(){
return (&win32vars.internal_bubble);
}
internal void
INTERNAL_system_debug_message(char *message){
OutputDebugStringA(message);
}
#endif
//
// Multithreading
//
internal
Sys_Acquire_Lock_Sig(system_acquire_lock){
EnterCriticalSection(&win32vars.locks[id]);
}
internal
Sys_Release_Lock_Sig(system_release_lock){
LeaveCriticalSection(&win32vars.locks[id]);
}
internal void
system_wait_cv(i32 crit_id, i32 cv_id){
SleepConditionVariableCS(win32vars.condition_vars + cv_id,
win32vars.locks + crit_id,
INFINITE);
}
internal void
system_signal_cv(i32 crit_id, i32 cv_id){
AllowLocal(crit_id);
WakeConditionVariable(win32vars.condition_vars + cv_id);
}
internal DWORD
JobThreadProc(LPVOID lpParameter){
Thread_Context *thread = (Thread_Context*)lpParameter;
Work_Queue *queue = win32vars.queues + thread->group_id;
Thread_Group *group = win32vars.groups + thread->group_id;
i32 thread_index = thread->id - 1;
i32 cancel_lock = group->cancel_lock0 + thread_index;
i32 cancel_cv = group->cancel_cv0 + thread_index;
Thread_Memory *thread_memory = win32vars.thread_memory + thread_index;
if (thread_memory->size == 0){
i32 new_size = Kbytes(64);
thread_memory->data = Win32GetMemory(new_size);
thread_memory->size = new_size;
}
for (;;){
u32 read_index = queue->read_position;
u32 write_index = queue->write_position;
if (read_index != write_index){
// NOTE(allen): Previously I was wrapping by the job wrap then
// wrapping by the queue wrap. That was super stupid what was that?
// Now it just wraps by the queue wrap.
u32 next_read_index = (read_index + 1) % QUEUE_WRAP;
u32 safe_read_index =
InterlockedCompareExchange(&queue->read_position,
next_read_index, read_index);
if (safe_read_index == read_index){
Full_Job_Data *full_job = queue->jobs + safe_read_index;
// NOTE(allen): This is interlocked so that it plays nice
// with the cancel job routine, which may try to cancel this job
// at the same time that we try to run it
i32 safe_running_thread =
InterlockedCompareExchange(&full_job->running_thread,
thread->id, THREAD_NOT_ASSIGNED);
if (safe_running_thread == THREAD_NOT_ASSIGNED){
thread->job_id = full_job->id;
thread->running = 1;
full_job->job.callback(&win32vars.system,
thread, thread_memory, full_job->job.data);
PostMessage(win32vars.window_handle, WM_4coder_ANIMATE, 0, 0);
//full_job->running_thread = 0;
thread->running = 0;
system_acquire_lock(cancel_lock);
if (thread->cancel){
thread->cancel = 0;
system_signal_cv(cancel_lock, cancel_cv);
}
system_release_lock(cancel_lock);
}
}
}
else{
WaitForSingleObject(Win32Handle(queue->semaphore), INFINITE);
}
}
}
internal void
initialize_unbounded_queue(Unbounded_Work_Queue *source_queue){
i32 max = 512;
source_queue->jobs = (Full_Job_Data*)system_get_memory(max*sizeof(Full_Job_Data));
source_queue->count = 0;
source_queue->max = max;
source_queue->skip = 0;
}
inline i32
get_work_queue_available_space(i32 write, i32 read){
// NOTE(allen): The only time that queue->write_position == queue->read_position
// is allowed is when the queue is empty. Thus if
// queue->write_position+1 == queue->read_position the available space is zero.
// So these computations both end up leaving one slot unused. The only way I can
// think to easily eliminate this is to have read and write wrap at twice the size
// of the underlying array but modulo their values into the array then if write
// has caught up with read it still will not be equal... but lots of modulos... ehh.
i32 available_space = 0;
if (write >= read){
available_space = QUEUE_WRAP - (write - read) - 1;
}
else{
available_space = (read - write) - 1;
}
return(available_space);
}
#define UNBOUNDED_SKIP_MAX 128
internal void
flush_to_direct_queue(Unbounded_Work_Queue *source_queue, Work_Queue *queue, i32 thread_count){
// NOTE(allen): It is understood that read_position may be changed by other
// threads but it will only make more space in the queue if it is changed.
// Meanwhile write_position should not ever be changed by anything but the
// main thread in this system, so it will not be interlocked.
u32 read_position = queue->read_position;
u32 write_position = queue->write_position;
u32 available_space = get_work_queue_available_space(write_position, read_position);
u32 available_jobs = source_queue->count - source_queue->skip;
u32 writable_count = Min(available_space, available_jobs);
if (writable_count > 0){
u32 count1 = writable_count;
if (count1+write_position > QUEUE_WRAP){
count1 = QUEUE_WRAP - write_position;
}
u32 count2 = writable_count - count1;
Full_Job_Data *job_src1 = source_queue->jobs + source_queue->skip;
Full_Job_Data *job_src2 = job_src1 + count1;
Full_Job_Data *job_dst1 = queue->jobs + write_position;
Full_Job_Data *job_dst2 = queue->jobs;
Assert((job_src1->id % QUEUE_WRAP) == write_position);
memcpy(job_dst1, job_src1, sizeof(Full_Job_Data)*count1);
memcpy(job_dst2, job_src2, sizeof(Full_Job_Data)*count2);
queue->write_position = (write_position + writable_count) % QUEUE_WRAP;
source_queue->skip += writable_count;
if (source_queue->skip == source_queue->count){
source_queue->skip = source_queue->count = 0;
}
else if (source_queue->skip > UNBOUNDED_SKIP_MAX){
u32 left_over = source_queue->count - source_queue->skip;
memmove(source_queue->jobs, source_queue->jobs + source_queue->skip,
sizeof(Full_Job_Data)*left_over);
source_queue->count = left_over;
source_queue->skip = 0;
}
}
i32 semaphore_release_count = writable_count;
if (semaphore_release_count > thread_count){
semaphore_release_count = thread_count;
}
// NOTE(allen): platform dependent portion...
// TODO(allen): pull out the duplicated part once I see
// that this is pretty much the same on linux.
for (i32 i = 0; i < semaphore_release_count; ++i){
ReleaseSemaphore(Win32Handle(queue->semaphore), 1, 0);
}
}
internal void
flush_thread_group(i32 group_id){
Thread_Group *group = win32vars.groups + group_id;
Work_Queue *queue = win32vars.queues + group_id;
Unbounded_Work_Queue *source_queue = &group->queue;
flush_to_direct_queue(source_queue, queue, group->count);
}
// Note(allen): post_job puts the job on the unbounded queue.
// The unbounded queue is entirely managed by the main thread.
// The thread safe queue is bounded in size so the unbounded
// queue is periodically flushed into the direct work queue.
internal
Sys_Post_Job_Sig(system_post_job){
Thread_Group *group = win32vars.groups + group_id;
Unbounded_Work_Queue *queue = &group->queue;
u32 result = queue->next_job_id++;
while (queue->count >= queue->max){
i32 new_max = queue->max*2;
Full_Job_Data *new_jobs = (Full_Job_Data*)
system_get_memory(new_max*sizeof(Full_Job_Data));
memcpy(new_jobs, queue->jobs, queue->count);
system_free_memory(queue->jobs);
queue->jobs = new_jobs;
queue->max = new_max;
}
Full_Job_Data full_job;
full_job.job = job;
full_job.running_thread = THREAD_NOT_ASSIGNED;
full_job.id = result;
queue->jobs[queue->count++] = full_job;
Work_Queue *direct_queue = win32vars.queues + group_id;
flush_to_direct_queue(queue, direct_queue, group->count);
return(result);
}
internal
Sys_Cancel_Job_Sig(system_cancel_job){
Thread_Group *group = win32vars.groups + group_id;
Unbounded_Work_Queue *source_queue = &group->queue;
b32 handled_in_unbounded = false;
if (source_queue->skip < source_queue->count){
Full_Job_Data *first_job = source_queue->jobs + source_queue->skip;
if (first_job->id <= job_id){
u32 index = source_queue->skip + (job_id - first_job->id);
Full_Job_Data *job = source_queue->jobs + index;
job->running_thread = 0;
handled_in_unbounded = true;
}
}
if (!handled_in_unbounded){
Work_Queue *queue = win32vars.queues + group_id;
Full_Job_Data *job = queue->jobs + (job_id % QUEUE_WRAP);
Assert(job->id == job_id);
u32 thread_id =
InterlockedCompareExchange(&job->running_thread,
0, THREAD_NOT_ASSIGNED);
if (thread_id != THREAD_NOT_ASSIGNED && thread_id != 0){
i32 thread_index = thread_id - 1;
i32 cancel_lock = group->cancel_lock0 + thread_index;
i32 cancel_cv = group->cancel_cv0 + thread_index;
Thread_Context *thread = group->threads + thread_index;
system_acquire_lock(cancel_lock);
thread->cancel = 1;
system_release_lock(FRAME_LOCK);
do{
system_wait_cv(cancel_lock, cancel_cv);
}while (thread->cancel == 1);
system_acquire_lock(FRAME_LOCK);
system_release_lock(cancel_lock);
}
}
}
internal
Sys_Check_Cancel_Sig(system_check_cancel){
b32 result = 0;
Thread_Group *group = win32vars.groups + thread->group_id;
i32 thread_index = thread->id - 1;
i32 cancel_lock = group->cancel_lock0 + thread_index;
system_acquire_lock(cancel_lock);
if (thread->cancel){
result = 1;
}
system_release_lock(cancel_lock);
return(result);
}
internal
Sys_Grow_Thread_Memory_Sig(system_grow_thread_memory){
void *old_data;
i32 old_size, new_size;
system_acquire_lock(CANCEL_LOCK0 + memory->id - 1);
old_data = memory->data;
old_size = memory->size;
new_size = LargeRoundUp(memory->size*2, Kbytes(4));
memory->data = system_get_memory(new_size);
memory->size = new_size;
if (old_data){
memcpy(memory->data, old_data, old_size);
system_free_memory(old_data);
}
system_release_lock(CANCEL_LOCK0 + memory->id - 1);
}
#if FRED_INTERNAL
internal void
INTERNAL_get_thread_states(Thread_Group_ID id, bool8 *running, i32 *pending){
Thread_Group *group = win32vars.groups + id;
Unbounded_Work_Queue *source_queue = &group->queue;
Work_Queue *queue = win32vars.queues + id;
u32 write = queue->write_position;
u32 read = queue->read_position;
if (write < read) write += QUEUE_WRAP;
*pending = (i32)(write - read) + source_queue->count - source_queue->skip;
for (i32 i = 0; i < group->count; ++i){
running[i] = (group->threads[i].running != 0);
}
}
#endif
//
// Coroutines
//
internal Win32_Coroutine*
Win32AllocCoroutine(){
Win32_Coroutine *result = win32vars.coroutine_free;
Assert(result != 0);
win32vars.coroutine_free = result->next;
return(result);
}
internal void
Win32FreeCoroutine(Win32_Coroutine *data){
data->next = win32vars.coroutine_free;
win32vars.coroutine_free = data;
}
internal void
Win32CoroutineMain(void *arg_){
Win32_Coroutine *c = (Win32_Coroutine*)arg_;
c->coroutine.func(&c->coroutine);
c->done = 1;
Win32FreeCoroutine(c);
SwitchToFiber(c->coroutine.yield_handle);
}
internal
Sys_Create_Coroutine_Sig(system_create_coroutine){
Win32_Coroutine *c;
Coroutine *coroutine;
void *fiber;
c = Win32AllocCoroutine();
c->done = 0;
coroutine = &c->coroutine;
fiber = CreateFiber(0, Win32CoroutineMain, coroutine);
coroutine->plat_handle = Win32Handle(fiber);
coroutine->func = func;
return(coroutine);
}
internal
Sys_Launch_Coroutine_Sig(system_launch_coroutine){
Win32_Coroutine *c = (Win32_Coroutine*)coroutine;
void *fiber;
fiber = Win32Handle(coroutine->plat_handle);
coroutine->yield_handle = GetCurrentFiber();
coroutine->in = in;
coroutine->out = out;
SwitchToFiber(fiber);
if (c->done){
DeleteFiber(fiber);
Win32FreeCoroutine(c);
coroutine = 0;
}
return(coroutine);
}
Sys_Resume_Coroutine_Sig(system_resume_coroutine){
Win32_Coroutine *c = (Win32_Coroutine*)coroutine;
void *fiber;
Assert(c->done == 0);
coroutine->yield_handle = GetCurrentFiber();
coroutine->in = in;
coroutine->out = out;
fiber = Win32Ptr(coroutine->plat_handle);
SwitchToFiber(fiber);
if (c->done){
DeleteFiber(fiber);
Win32FreeCoroutine(c);
coroutine = 0;
}
return(coroutine);
}
Sys_Yield_Coroutine_Sig(system_yield_coroutine){
SwitchToFiber(coroutine->yield_handle);
}
//
// Files
//
internal
Sys_File_Can_Be_Made_Sig(system_file_can_be_made){
HANDLE file;
file = CreateFile((char*)filename, FILE_APPEND_DATA, 0, 0,
OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
if (!file || file == INVALID_HANDLE_VALUE){
return 0;
}
CloseHandle(file);
return(1);
}
internal
Sys_Set_File_List_Sig(system_set_file_list){
if (directory.size > 0){
char dir_space[MAX_PATH + 32];
String dir = make_string_cap(dir_space, 0, MAX_PATH + 32);
append_ss(&dir, directory);
append_ss(&dir, make_lit_string("\\*"));
terminate_with_null(&dir);
char *c_str_dir = dir.str;
WIN32_FIND_DATA find_data;
HANDLE search;
search = FindFirstFileA(c_str_dir, &find_data);
if (search != INVALID_HANDLE_VALUE){
i32 count = 0;
i32 file_count = 0;
BOOL more_files = 1;
do{
if (!match_cs(find_data.cFileName, make_lit_string(".")) &&
!match_cs(find_data.cFileName, make_lit_string(".."))){
++file_count;
i32 size = 0;
for(;find_data.cFileName[size];++size);
count += size + 1;
}
more_files = FindNextFile(search, &find_data);
}while(more_files);
FindClose(search);
i32 required_size = count + file_count * sizeof(File_Info);
if (file_list->block_size < required_size){
Win32FreeMemory(file_list->block);
file_list->block = Win32GetMemory(required_size);
file_list->block_size = required_size;
}
file_list->infos = (File_Info*)file_list->block;
char *name = (char*)(file_list->infos + file_count);
if (file_list->block){
search = FindFirstFileA(c_str_dir, &find_data);
if (search != INVALID_HANDLE_VALUE){
File_Info *info = file_list->infos;
more_files = 1;
do{
if (!match_cs(find_data.cFileName, make_lit_string(".")) &&
!match_cs(find_data.cFileName, make_lit_string(".."))){
info->folder = (find_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0;
info->filename = name;
i32 i = 0;
for(;find_data.cFileName[i];++i) *name++ = find_data.cFileName[i];
info->filename_len = i;
*name++ = 0;
String fname = make_string_cap(info->filename,
info->filename_len,
info->filename_len+1);
replace_char(&fname, '\\', '/');
++info;
}
more_files = FindNextFile(search, &find_data);
}while(more_files);
FindClose(search);
file_list->count = file_count;
}else{
Win32FreeMemory(file_list->block);
file_list->block = 0;
file_list->block_size = 0;
}
}
}
}
else{
if (directory.str == 0){
Win32FreeMemory(file_list->block);
file_list->block = 0;
file_list->block_size = 0;
}
file_list->infos = 0;
file_list->count = 0;
}
}
// NOTE(allen): This does not chase down symbolic links because doing so
// would require a lot of heavy duty OS calls. I've decided to give up
// a little ground on always recognizing files as equivalent in exchange
// for the ability to handle them very quickly when nothing strange is
// going on.
internal int32_t
win32_canonical_ascii_name(char *src, i32 len, char *dst, i32 max){
char *wrt = dst;
char *wrt_stop = dst + max;
char *src_stop = src + len;
char c = 0;
if (len >= 2 && max > 0){
c = src[0];
if (c >= 'a' && c <= 'z'){
c -= 'a' - 'A';
}
if (c >= 'A' && c <= 'Z' && src[1] == ':'){
*(wrt++) = c;
if (wrt == wrt_stop) goto fail;
*(wrt++) = ':';
if (wrt == wrt_stop) goto fail;
src += 2;
for (; src < src_stop; ++src){
c = src[0];
if (c >= 'A' && c <= 'Z'){
c += 'a' - 'A';
}
if (c == '/' || c == '\\'){
c = '\\';
if (wrt > dst && wrt[-1] == '\\'){
continue;
}
else if (src[1] == '.'){
if (src[2] == '\\' || src[2] == '/'){
src += 1;
}
else if (src[2] == '.' && (src[3] == '\\' || src[3] == '/')){
src += 2;
while (wrt > dst && wrt[0] != '\\'){
--wrt;
}
if (wrt == dst) goto fail;
}
}
}
*wrt = c;
++wrt;
if (wrt == wrt_stop) goto fail;
}
}
}
if (0){
fail:;
wrt = dst;
}
int32_t result = (int32_t)(wrt - dst);
return(result);
}
internal
Sys_Get_Canonical_Sig(system_get_canonical){
i32 result = win32_canonical_ascii_name(filename, len, buffer, max);
return(result);
}
internal
Sys_Load_Handle_Sig(system_load_handle){
b32 result = 0;
HANDLE file = CreateFile(filename,
GENERIC_READ,
0,
0,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
0);
if (file != INVALID_HANDLE_VALUE){
*(HANDLE*)handle_out = file;
result = 1;
}
return(result);
}
internal
Sys_Load_Size_Sig(system_load_size){
u32 result = 0;
HANDLE file = *(HANDLE*)(&handle);
DWORD hi = 0;
DWORD lo = GetFileSize(file, &hi);
if (hi == 0){
result = lo;
}
return(result);
}
internal
Sys_Load_File_Sig(system_load_file){
b32 result = 0;
HANDLE file = *(HANDLE*)(&handle);
DWORD read_size = 0;
if (ReadFile(file,
buffer,
size,
&read_size,
0)){
if (read_size == size){
result = 1;
}
}
return(result);
}
internal
Sys_Load_Close_Sig(system_load_close){
b32 result = 0;
HANDLE file = *(HANDLE*)(&handle);
if (CloseHandle(file)){
result = 1;
}
return(result);
}
internal
Sys_Save_File_Sig(system_save_file){
b32 result = 0;
HANDLE file = CreateFile(filename,
GENERIC_WRITE,
0,
0,
CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
0);
if (file != INVALID_HANDLE_VALUE){
DWORD written_total = 0;
DWORD written_size = 0;
result = 1;
while (written_total < size){
if (!WriteFile(file, buffer, size, &written_size, 0)){
result = 0;
break;
}
written_total += written_size;
}
CloseHandle(file);
}
return(result);
}
internal
Sys_Now_Time_Sig(system_now_time){
u64 result = __rdtsc();
return(result);
}
b32 Win32DirectoryExists(char *path){
DWORD attrib = GetFileAttributesA(path);
return (attrib != INVALID_FILE_ATTRIBUTES &&
(attrib & FILE_ATTRIBUTE_DIRECTORY));
}
internal
Sys_Get_Binary_Path_Sig(system_get_binary_path){
i32 result = 0;
i32 size = GetModuleFileName(0, out->str, out->memory_size);
if (size < out->memory_size-1){
out->size = size;
remove_last_folder(out);
terminate_with_null(out);
result = out->size;
}
return(result);
}
/*
NOTE(casey): This follows Raymond Chen's prescription
for fullscreen toggling, see:
http://blogs.msdn.com/b/oldnewthing/archive/2010/04/12/9994016.aspx
*/
internal void
Win32ToggleFullscreen(void){
HWND Window = win32vars.window_handle;
LONG_PTR Style = GetWindowLongPtr(Window, GWL_STYLE);
if (Style & WS_OVERLAPPEDWINDOW){
MONITORINFO MonitorInfo = {sizeof(MonitorInfo)};
if(GetWindowPlacement(Window, &win32vars.GlobalWindowPosition) &&
GetMonitorInfo(MonitorFromWindow(Window, MONITOR_DEFAULTTOPRIMARY), &MonitorInfo))
{
SetWindowLongPtr(Window, GWL_STYLE, Style & ~WS_OVERLAPPEDWINDOW);
SetWindowPos(Window, HWND_TOP,
MonitorInfo.rcMonitor.left, MonitorInfo.rcMonitor.top,
MonitorInfo.rcMonitor.right - MonitorInfo.rcMonitor.left,
MonitorInfo.rcMonitor.bottom - MonitorInfo.rcMonitor.top,
SWP_NOOWNERZORDER | SWP_FRAMECHANGED);
win32vars.full_screen = 1;
}
}
else{
SetWindowLongPtr(Window, GWL_STYLE, Style | WS_OVERLAPPEDWINDOW);
SetWindowPlacement(Window, &win32vars.GlobalWindowPosition);
SetWindowPos(Window, 0, 0, 0, 0, 0,
SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
SWP_NOOWNERZORDER | SWP_FRAMECHANGED);
win32vars.full_screen = 0;
}
}
#include "win32_api_impl.cpp"
//
// Clipboard
//
internal
Sys_Post_Clipboard_Sig(system_post_clipboard){
if (OpenClipboard(win32vars.window_handle)){
EmptyClipboard();
HANDLE memory_handle;
memory_handle = GlobalAlloc(GMEM_MOVEABLE, str.size+1);
if (memory_handle){
char *dest = (char*)GlobalLock(memory_handle);
copy_fast_unsafe_cs(dest, str);
GlobalUnlock(memory_handle);
SetClipboardData(CF_TEXT, memory_handle);
win32vars.next_clipboard_is_self = 1;
}
CloseClipboard();
}
}
internal b32
Win32ReadClipboardContents(){
b32 result = 0;
if (IsClipboardFormatAvailable(CF_TEXT)){
result = 1;
if (OpenClipboard(win32vars.window_handle)){
HANDLE clip_data;
clip_data = GetClipboardData(CF_TEXT);
if (clip_data){
win32vars.clipboard_contents.str = (char*)GlobalLock(clip_data);
if (win32vars.clipboard_contents.str){
win32vars.clipboard_contents.size = str_size((char*)win32vars.clipboard_contents.str);
GlobalUnlock(clip_data);
}
}
CloseClipboard();
}
}
return(result);
}
//
// Command Line Exectuion
//
internal
Sys_CLI_Call_Sig(system_cli_call){
char cmd[] = "c:\\windows\\system32\\cmd.exe";
char *env_variables = 0;
char command_line[2048];
String s = make_fixed_width_string(command_line);
copy_ss(&s, make_lit_string("/C "));
append_partial_sc(&s, script_name);
b32 success = terminate_with_null(&s);
if (success){
success = 0;
SECURITY_ATTRIBUTES sec_attributes = {};
HANDLE out_read;
HANDLE out_write;
sec_attributes.nLength = sizeof(SECURITY_ATTRIBUTES);
sec_attributes.bInheritHandle = TRUE;
if (CreatePipe(&out_read, &out_write, &sec_attributes, 0)){
if (SetHandleInformation(out_read, HANDLE_FLAG_INHERIT, 0)){
STARTUPINFO startup = {};
startup.cb = sizeof(STARTUPINFO);
startup.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
startup.hStdError = out_write;
startup.hStdOutput = out_write;
startup.wShowWindow = SW_HIDE;
PROCESS_INFORMATION info = {};
Assert(sizeof(Plat_Handle) >= sizeof(HANDLE));
if (CreateProcess(cmd, command_line,
0, 0, TRUE, 0,
env_variables, path,
&startup, &info)){
success = 1;
CloseHandle(info.hThread);
*(HANDLE*)&cli_out->proc = info.hProcess;
*(HANDLE*)&cli_out->out_read = out_read;
*(HANDLE*)&cli_out->out_write = out_write;
++win32vars.running_cli;
}
else{
CloseHandle(out_read);
CloseHandle(out_write);
*(HANDLE*)&cli_out->proc = INVALID_HANDLE_VALUE;
*(HANDLE*)&cli_out->out_read = INVALID_HANDLE_VALUE;
*(HANDLE*)&cli_out->out_write = INVALID_HANDLE_VALUE;
}
}
else{
// TODO(allen): failed SetHandleInformation
CloseHandle(out_read);
CloseHandle(out_write);
*(HANDLE*)&cli_out->proc = INVALID_HANDLE_VALUE;
*(HANDLE*)&cli_out->out_read = INVALID_HANDLE_VALUE;
*(HANDLE*)&cli_out->out_write = INVALID_HANDLE_VALUE;
}
}
else{
// TODO(allen): failed CreatePipe
}
}
return success;
}
struct CLI_Loop_Control{
u32 remaining_amount;
};
internal
Sys_CLI_Begin_Update_Sig(system_cli_begin_update){
Assert(sizeof(cli->scratch_space) >= sizeof(CLI_Loop_Control));
CLI_Loop_Control *loop = (CLI_Loop_Control*)cli->scratch_space;
loop->remaining_amount = 0;
}
internal
Sys_CLI_Update_Step_Sig(system_cli_update_step){
HANDLE handle = *(HANDLE*)&cli->out_read;
CLI_Loop_Control *loop = (CLI_Loop_Control*)cli->scratch_space;
b32 has_more = 0;
DWORD remaining = loop->remaining_amount;
u32 pos = 0;
DWORD read_amount = 0;
for (;;){
if (remaining == 0){
if (!PeekNamedPipe(handle, 0, 0, 0, &remaining, 0)) break;
if (remaining == 0) break;
}
if (remaining + pos < max){
has_more = 1;
ReadFile(handle, dest + pos, remaining, &read_amount, 0);
TentativeAssert(remaining == read_amount);
pos += remaining;
remaining = 0;
}
else{
has_more = 1;
ReadFile(handle, dest + pos, max - pos, &read_amount, 0);
TentativeAssert(max - pos == read_amount);
loop->remaining_amount = remaining - (max - pos);
pos = max;
break;
}
}
*amount = pos;
return(has_more);
}
internal
Sys_CLI_End_Update_Sig(system_cli_end_update){
b32 close_me = 0;
HANDLE proc = *(HANDLE*)&cli->proc;
DWORD result = 0;
if (WaitForSingleObject(proc, 0) == WAIT_OBJECT_0){
if (GetExitCodeProcess(proc, &result) == 0)
cli->exit = -1;
else
cli->exit = (i32)result;
close_me = 1;
CloseHandle(*(HANDLE*)&cli->proc);
CloseHandle(*(HANDLE*)&cli->out_read);
CloseHandle(*(HANDLE*)&cli->out_write);
--win32vars.running_cli;
}
return(close_me);
}
#include "system_shared.cpp"
#if USE_FT_FONTS
# include "win32_ft_font.cpp"
#endif
internal f32
size_change(i32 dpi_x, i32 dpi_y){
// TODO(allen): We're just hoping dpi_x == dpi_y for now I guess.
f32 size_x = dpi_x / 96.f;
f32 size_y = dpi_y / 96.f;
f32 size_max = Max(size_x, size_y);
return(size_max);
}
internal
Font_Load_Sig(system_draw_font_load){
if (win32vars.font_part.base == 0){
win32vars.font_part = Win32ScratchPartition(Mbytes(8));
}
i32 oversample = 2;
AllowLocal(oversample);
#if SUPPORT_DPI
pt_size = ROUND32(pt_size * size_change(win32vars.dpi_x, win32vars.dpi_y));
#endif
for (b32 success = 0; success == 0;){
#if USE_WIN32_FONTS
success = win32_font_load(&win32vars.font_part,
font_out,
filename,
fontname,
pt_size,
tab_width,
oversample,
store_texture);
#elif USE_FT_FONTS
success = win32_ft_font_load(&win32vars.font_part,
font_out,
filename,
pt_size,
tab_width,
win32vars.settings.use_hinting);
#else
success = stb_font_load(&win32vars.font_part,
font_out,
filename,
pt_size,
tab_width,
oversample,
store_texture);
#endif
// TODO(allen): Make the growable partition something
// that can just be passed directly to font load and
// let it be grown there.
if (!success){
Win32ScratchPartitionDouble(&win32vars.font_part);
}
}
return(1);
}
//
// Linkage to Custom and Application
//
internal b32
Win32LoadAppCode(){
b32 result = 0;
App_Get_Functions *get_funcs = 0;
win32vars.app_code = LoadLibraryA("4ed_app.dll");
if (win32vars.app_code){
get_funcs = (App_Get_Functions*)
GetProcAddress(win32vars.app_code, "app_get_functions");
}
if (get_funcs){
result = 1;
win32vars.app = get_funcs();
}
return result;
}
internal void
Win32LoadSystemCode(){
win32vars.system.set_file_list = system_set_file_list;
win32vars.system.get_canonical = system_get_canonical;
win32vars.system.add_listener = system_add_listener;
win32vars.system.remove_listener = system_remove_listener;
win32vars.system.get_file_change = system_get_file_change;
win32vars.system.load_handle = system_load_handle;
win32vars.system.load_size = system_load_size;
win32vars.system.load_file = system_load_file;
win32vars.system.load_close = system_load_close;
win32vars.system.save_file = system_save_file;
win32vars.system.now_time = system_now_time;
win32vars.system.memory_allocate = Memory_Allocate;
win32vars.system.memory_set_protection = Memory_Set_Protection;
win32vars.system.memory_free = Memory_Free;
win32vars.system.file_exists = File_Exists;
win32vars.system.directory_cd = Directory_CD;
win32vars.system.get_4ed_path = Get_4ed_Path;
win32vars.system.show_mouse_cursor = Show_Mouse_Cursor;
win32vars.system.toggle_fullscreen = Toggle_Fullscreen;
win32vars.system.is_fullscreen = Is_Fullscreen;
win32vars.system.send_exit_signal = Send_Exit_Signal;
win32vars.system.post_clipboard = system_post_clipboard;
win32vars.system.create_coroutine = system_create_coroutine;
win32vars.system.launch_coroutine = system_launch_coroutine;
win32vars.system.resume_coroutine = system_resume_coroutine;
win32vars.system.yield_coroutine = system_yield_coroutine;
win32vars.system.cli_call = system_cli_call;
win32vars.system.cli_begin_update = system_cli_begin_update;
win32vars.system.cli_update_step = system_cli_update_step;
win32vars.system.cli_end_update = system_cli_end_update;
win32vars.system.post_job = system_post_job;
win32vars.system.cancel_job = system_cancel_job;
win32vars.system.check_cancel = system_check_cancel;
win32vars.system.grow_thread_memory = system_grow_thread_memory;
win32vars.system.acquire_lock = system_acquire_lock;
win32vars.system.release_lock = system_release_lock;
#if FRED_INTERNAL
win32vars.system.internal_sentinel = INTERNAL_system_sentinel;
win32vars.system.internal_get_thread_states = INTERNAL_get_thread_states;
win32vars.system.internal_debug_message = INTERNAL_system_debug_message;
#endif
win32vars.system.slash = '/';
}
internal void
Win32LoadRenderCode(){
win32vars.target.push_clip = draw_push_clip;
win32vars.target.pop_clip = draw_pop_clip;
win32vars.target.push_piece = draw_push_piece;
win32vars.target.font_set.font_load = system_draw_font_load;
win32vars.target.font_set.release_font = draw_release_font;
}
//
// Helpers
//
globalvar u8 keycode_lookup_table[255];
internal void
Win32KeycodeInit(){
keycode_lookup_table[VK_BACK] = key_back;
keycode_lookup_table[VK_DELETE] = key_del;
keycode_lookup_table[VK_UP] = key_up;
keycode_lookup_table[VK_DOWN] = key_down;
keycode_lookup_table[VK_LEFT] = key_left;
keycode_lookup_table[VK_RIGHT] = key_right;
keycode_lookup_table[VK_INSERT] = key_insert;
keycode_lookup_table[VK_HOME] = key_home;
keycode_lookup_table[VK_END] = key_end;
keycode_lookup_table[VK_PRIOR] = key_page_up;
keycode_lookup_table[VK_NEXT] = key_page_down;
keycode_lookup_table[VK_ESCAPE] = key_esc;
keycode_lookup_table[VK_F1] = key_f1;
keycode_lookup_table[VK_F2] = key_f2;
keycode_lookup_table[VK_F3] = key_f3;
keycode_lookup_table[VK_F4] = key_f4;
keycode_lookup_table[VK_F5] = key_f5;
keycode_lookup_table[VK_F6] = key_f6;
keycode_lookup_table[VK_F7] = key_f7;
keycode_lookup_table[VK_F8] = key_f8;
keycode_lookup_table[VK_F9] = key_f9;
keycode_lookup_table[VK_F10] = key_f10;
keycode_lookup_table[VK_F11] = key_f11;
keycode_lookup_table[VK_F12] = key_f12;
keycode_lookup_table[VK_F13] = key_f13;
keycode_lookup_table[VK_F14] = key_f14;
keycode_lookup_table[VK_F15] = key_f15;
keycode_lookup_table[VK_F16] = key_f16;
}
internal void
Win32RedrawScreen(HDC hdc){
launch_rendering(&win32vars.target);
glFlush();
SwapBuffers(hdc);
}
internal void
Win32Resize(i32 width, i32 height){
if (width > 0 && height > 0){
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0, width, height, 0, -1, 1);
glScissor(0, 0, width, height);
win32vars.target.width = width;
win32vars.target.height = height;
}
}
internal void
Win32SetCursorFromUpdate(Application_Mouse_Cursor cursor){
switch (cursor){
case APP_MOUSE_CURSOR_ARROW:
SetCursor(win32vars.cursor_arrow); break;
case APP_MOUSE_CURSOR_IBEAM:
SetCursor(win32vars.cursor_ibeam); break;
case APP_MOUSE_CURSOR_LEFTRIGHT:
SetCursor(win32vars.cursor_leftright); break;
case APP_MOUSE_CURSOR_UPDOWN:
SetCursor(win32vars.cursor_updown); break;
}
}
internal u64
Win32HighResolutionTime(){
u64 result = 0;
LARGE_INTEGER t;
if (QueryPerformanceCounter(&t)){
result = (u64)t.QuadPart / win32vars.count_per_usecond;
}
return(result);
}
internal LRESULT
Win32Callback(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam){
LRESULT result = 0;
switch (uMsg){
case WM_MENUCHAR:
case WM_SYSCHAR:break;
case WM_SYSKEYDOWN:
case WM_SYSKEYUP:
case WM_KEYDOWN:
case WM_KEYUP:
{
switch (wParam){
case VK_CONTROL:case VK_LCONTROL:case VK_RCONTROL:
case VK_MENU:case VK_LMENU:case VK_RMENU:
case VK_SHIFT:case VK_LSHIFT:case VK_RSHIFT:
{
Control_Keys *controls = 0;
b8 *control_keys = 0;
controls = &win32vars.input_chunk.pers.controls;
control_keys = win32vars.input_chunk.pers.control_keys;
b8 down = ((lParam & Bit_31)?(0):(1));
b8 is_right = ((lParam & Bit_24)?(1):(0));
if (wParam != 255){
switch (wParam){
case VK_SHIFT:
{
control_keys[MDFR_SHIFT_INDEX] = down;
}break;
case VK_CONTROL:
{
if (is_right) controls->r_ctrl = down;
else controls->l_ctrl = down;
}break;
case VK_MENU:
{
if (is_right) controls->r_alt = down;
else controls->l_alt = down;
}break;
}
b8 ctrl, alt;
ctrl = (controls->r_ctrl || (controls->l_ctrl && !controls->r_alt));
alt = (controls->l_alt || (controls->r_alt && !controls->l_ctrl));
if (win32vars.lctrl_lalt_is_altgr){
if (controls->l_alt && controls->l_ctrl){
ctrl = 0;
alt = 0;
}
}
control_keys[MDFR_CONTROL_INDEX] = ctrl;
control_keys[MDFR_ALT_INDEX] = alt;
}
}break;
default:
{
b8 previous_state = ((lParam & Bit_30)?(1):(0));
b8 current_state = ((lParam & Bit_31)?(0):(1));
win32vars.got_useful_event = 1;
if (current_state){
u8 key = keycode_lookup_table[(u8)wParam];
i32 *count = 0;
Key_Event_Data *data = 0;
b8 *control_keys = 0;
i32 control_keys_size = 0;
if (!previous_state){
count = &win32vars.input_chunk.trans.key_data.press_count;
data = win32vars.input_chunk.trans.key_data.press;
}
else{
count = &win32vars.input_chunk.trans.key_data.hold_count;
data = win32vars.input_chunk.trans.key_data.hold;
}
control_keys = win32vars.input_chunk.pers.control_keys;
control_keys_size = sizeof(win32vars.input_chunk.pers.control_keys);
if (*count < KEY_INPUT_BUFFER_SIZE){
if (!key){
UINT vk = (UINT)wParam;
UINT scan = (UINT)((lParam >> 16) & 0x7F);
BYTE state[256];
BYTE control_state = 0;
WORD x1 = 0, x2 = 0, x = 0, junk_x;
i32 result1 = 0, result2 = 0, result = 0;
GetKeyboardState(state);
x1 = 0;
result1 = ToAscii(vk, scan, state, &x1, 0);
if (result1 < 0){
ToAscii(vk, scan, state, &junk_x, 0);
}
result1 = (result1 == 1);
if (!usable_ascii((char)x1)){
result1 = 0;
}
control_state = state[VK_CONTROL];
state[VK_CONTROL] = 0;
x2 = 0;
result2 = ToAscii(vk, scan, state, &x2, 0);
if (result2 < 0){
ToAscii(vk, scan, state, &junk_x, 0);
}
result2 = (result2 == 1);
if (!usable_ascii((char)x2)){
result2 = 0;
}
// TODO(allen): This is becoming a really major issue.
// Apparently control + i outputs a '\t' which is VALID ascii
// according to this system. So it reports the key as '\t'.
// This wasn't an issue before because we were ignoring control
// when computing character_no_caps_lock which is what is used
// for commands. But that is incorrect for some keyboard layouts
// where control+alt is used to signal AltGr for important keys.
if (result1 && result2){
char c1 = char_to_upper((char)x1);
char cParam = char_to_upper((char)wParam);
if ((c1 == '\n' || c1 == '\r') && cParam != VK_RETURN){
result1 = 0;
}
if (c1 == '\t' && cParam != VK_TAB){
result1 = 0;
}
}
if (result1){
x = x1;
state[VK_CONTROL] = control_state;
result = 1;
}
else if (result2){
x = x2;
result = 1;
}
if (result == 1 && x < 128){
key = (u8)x;
if (key == '\r') key = '\n';
data[*count].character = key;
state[VK_CAPITAL] = 0;
x = 0;
result = ToAscii(vk, scan, state, &x, 0);
if (result < 0){
ToAscii(vk, scan, state, &junk_x, 0);
}
result = (result == 1);
if (!usable_ascii((char)x)){
result = 0;
}
if (result){
key = (u8)x;
if (key == '\r') key = '\n';
data[*count].character_no_caps_lock = key;
data[*count].keycode = key;
}
}
if (result != 1 || x >= 128){
data[*count].character = 0;
data[*count].character_no_caps_lock = 0;
data[*count].keycode = 0;
}
}
else{
data[*count].character = 0;
data[*count].character_no_caps_lock = 0;
data[*count].keycode = key;
}
memcpy(data[*count].modifiers, control_keys, control_keys_size);
data[*count].modifiers[MDFR_HOLD_INDEX] = previous_state;
++(*count);
}
}
result = DefWindowProc(hwnd, uMsg, wParam, lParam);
}break;
}/* switch */
}break;
case WM_MOUSEMOVE:
{
i32 new_x = LOWORD(lParam);
i32 new_y = HIWORD(lParam);
if (new_x != win32vars.input_chunk.pers.mouse_x
|| new_y != win32vars.input_chunk.pers.mouse_y){
win32vars.input_chunk.pers.mouse_x = new_x;
win32vars.input_chunk.pers.mouse_y = new_y;
win32vars.got_useful_event = 1;
}
}break;
case WM_MOUSEWHEEL:
{
win32vars.got_useful_event = 1;
i16 rotation = GET_WHEEL_DELTA_WPARAM(wParam);
if (rotation > 0){
win32vars.input_chunk.trans.mouse_wheel = 1;
}
else{
win32vars.input_chunk.trans.mouse_wheel = -1;
}
}break;
case WM_LBUTTONDOWN:
{
win32vars.got_useful_event = 1;
win32vars.input_chunk.trans.mouse_l_press = 1;
win32vars.input_chunk.pers.mouse_l = 1;
}break;
case WM_RBUTTONDOWN:
{
win32vars.got_useful_event = 1;
win32vars.input_chunk.trans.mouse_r_press = 1;
win32vars.input_chunk.pers.mouse_r = 1;
}break;
case WM_LBUTTONUP:
{
win32vars.got_useful_event = 1;
win32vars.input_chunk.trans.mouse_l_release = 1;
win32vars.input_chunk.pers.mouse_l = 0;
}break;
case WM_RBUTTONUP:
{
win32vars.got_useful_event = 1;
win32vars.input_chunk.trans.mouse_r_release = 1;
win32vars.input_chunk.pers.mouse_r = 0;
}break;
case WM_KILLFOCUS:
case WM_SETFOCUS:
{
win32vars.got_useful_event = 1;
win32vars.input_chunk.pers.mouse_l = 0;
win32vars.input_chunk.pers.mouse_r = 0;
for (int32_t i = 0; i < MDFR_INDEX_COUNT; ++i){
win32vars.input_chunk.pers.control_keys[i] = 0;
}
win32vars.input_chunk.pers.controls = null_control_keys;
}break;
case WM_SIZE:
{
win32vars.got_useful_event = 1;
if (win32vars.target.handle){
i32 new_width = LOWORD(lParam);
i32 new_height = HIWORD(lParam);
Win32Resize(new_width, new_height);
}
}break;
case WM_PAINT:
{
win32vars.got_useful_event = 1;
PAINTSTRUCT ps;
HDC hdc = BeginPaint(hwnd, &ps);
Win32RedrawScreen(hdc);
EndPaint(hwnd, &ps);
}break;
case WM_CLOSE:
case WM_DESTROY:
{
win32vars.got_useful_event = 1;
win32vars.input_chunk.trans.trying_to_kill = 1;
}break;
case WM_4coder_ANIMATE:
win32vars.got_useful_event = 1;
break;
case WM_CANCELMODE:
{
result = DefWindowProc(hwnd, uMsg, wParam, lParam);
}break;
default:
{
result = DefWindowProc(hwnd, uMsg, wParam, lParam);
}break;
}
return(result);
}
#define GL_DEBUG_OUTPUT_SYNCHRONOUS 0x8242
#define GL_DEBUG_OUTPUT 0x92E0
typedef void GLDEBUGPROC_TYPE(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const char * message, const GLvoid * userParam);
typedef GLDEBUGPROC_TYPE * GLDEBUGPROC;
typedef void glDebugMessageControl_type(GLenum source, GLenum type, GLenum severity, GLsizei count, GLuint * ids, GLboolean enabled);
typedef void glDebugMessageCallback_type(GLDEBUGPROC callback, void * userParam);
internal void
OpenGLDebugCallback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const char *message, const void *userParam)
{
OutputDebugStringA(message);
OutputDebugStringA("\n");
}
int
WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow){
i32 argc = __argc;
char **argv = __argv;
memset(&win32vars, 0, sizeof(win32vars));
win32vars.GlobalWindowPosition.length = sizeof(win32vars.GlobalWindowPosition);
//
// Threads and Coroutines
//
// NOTE(allen): These should come before threads are started!
// Threads now get memory right away and so they use
// the internal_bubble and DEBUG_sysmem_lock
#if FRED_INTERNAL
win32vars.internal_bubble.next = &win32vars.internal_bubble;
win32vars.internal_bubble.prev = &win32vars.internal_bubble;
win32vars.internal_bubble.flags = 0;
InitializeCriticalSection(&win32vars.DEBUG_sysmem_lock);
#endif
for (i32 i = 0; i < LOCK_COUNT; ++i){
InitializeCriticalSection(&win32vars.locks[i]);
}
for (i32 i = 0; i < CV_COUNT; ++i){
InitializeConditionVariable(&win32vars.condition_vars[i]);
}
Thread_Context background[4];
memset(background, 0, sizeof(background));
win32vars.groups[BACKGROUND_THREADS].threads = background;
win32vars.groups[BACKGROUND_THREADS].count = ArrayCount(background);
win32vars.groups[BACKGROUND_THREADS].cancel_lock0 = CANCEL_LOCK0;
win32vars.groups[BACKGROUND_THREADS].cancel_cv0 = CANCEL_CV0;
Thread_Memory thread_memory[ArrayCount(background)];
win32vars.thread_memory = thread_memory;
win32vars.queues[BACKGROUND_THREADS].semaphore =
Win32Handle(CreateSemaphore(0, 0,
win32vars.groups[BACKGROUND_THREADS].count,
0));
u32 creation_flag = 0;
for (i32 i = 0; i < win32vars.groups[BACKGROUND_THREADS].count; ++i){
Thread_Context *thread = win32vars.groups[BACKGROUND_THREADS].threads + i;
thread->id = i + 1;
thread->group_id = BACKGROUND_THREADS;
Thread_Memory *memory = win32vars.thread_memory + i;
*memory = thread_memory_zero();
memory->id = thread->id;
thread->queue = &win32vars.queues[BACKGROUND_THREADS];
thread->handle = CreateThread(0, 0, JobThreadProc, thread, creation_flag, (LPDWORD)&thread->windows_id);
}
initialize_unbounded_queue(&win32vars.groups[BACKGROUND_THREADS].queue);
ConvertThreadToFiber(0);
win32vars.coroutine_free = win32vars.coroutine_data;
for (i32 i = 0; i+1 < ArrayCount(win32vars.coroutine_data); ++i){
win32vars.coroutine_data[i].next = win32vars.coroutine_data + i + 1;
}
//
// Memory Initialization
//
LPVOID base;
#if FRED_INTERNAL
base = (LPVOID)Tbytes(1);
#else
base = (LPVOID)0;
#endif
memory_vars.vars_memory_size = Mbytes(2);
memory_vars.vars_memory = VirtualAlloc(base, memory_vars.vars_memory_size,
MEM_COMMIT | MEM_RESERVE,
PAGE_READWRITE);
#if FRED_INTERNAL
base = (LPVOID)Tbytes(2);
#else
base = (LPVOID)0;
#endif
memory_vars.target_memory_size = Mbytes(512);
memory_vars.target_memory =
VirtualAlloc(base, memory_vars.target_memory_size,
MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
base = (LPVOID)0;
memory_vars.user_memory_size = Mbytes(2);
memory_vars.user_memory =
VirtualAlloc(base, memory_vars.target_memory_size,
MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
if (!memory_vars.vars_memory){
exit(1);
}
win32vars.target.max = Mbytes(1);
win32vars.target.push_buffer = (char*)system_get_memory(win32vars.target.max);
//
// System and Application Layer Linkage
//
if (!Win32LoadAppCode()){
exit(1);
}
Win32LoadSystemCode();
Win32LoadRenderCode();
//
// Shared Systems Init
//
init_shared_vars();
//
// Read Command Line
//
DWORD required = (GetCurrentDirectory(0, 0)*4) + 1;
char *current_directory_mem = (char*)system_get_memory(required);
DWORD written = GetCurrentDirectory(required, current_directory_mem);
String current_directory = make_string_cap(current_directory_mem, written, required);
terminate_with_null(&current_directory);
replace_char(&current_directory, '\\', '/');
Command_Line_Parameters clparams;
clparams.argv = argv;
clparams.argc = argc;
char **files = 0;
i32 *file_count = 0;
win32vars.app.read_command_line(&win32vars.system,
&memory_vars,
current_directory,
&win32vars.settings,
&files, &file_count,
clparams);
sysshared_filter_real_files(files, file_count);
//
// Custom Layer Linkage
//
#if defined(FRED_SUPER)
char *custom_file_default = "4coder_custom.dll";
char *custom_file = 0;
if (win32vars.settings.custom_dll) custom_file = win32vars.settings.custom_dll;
else custom_file = custom_file_default;
win32vars.custom = LoadLibraryA(custom_file);
if (!win32vars.custom && custom_file != custom_file_default){
if (!win32vars.settings.custom_dll_is_strict){
win32vars.custom = LoadLibraryA(custom_file_default);
}
}
if (win32vars.custom){
win32vars.custom_api.get_alpha_4coder_version = (_Get_Version_Function*)
GetProcAddress(win32vars.custom, "get_alpha_4coder_version");
if (win32vars.custom_api.get_alpha_4coder_version == 0 ||
win32vars.custom_api.get_alpha_4coder_version(MAJOR, MINOR, PATCH) == 0){
MessageBoxA(0,"Error: The application and custom version numbers don't match.\n", "Error",0);
exit(1);
}
win32vars.custom_api.get_bindings = (Get_Binding_Data_Function*)
GetProcAddress(win32vars.custom, "get_bindings");
// NOTE(allen): I am temporarily taking the view routine
// back out, it will be back soon.
#if 0
win32vars.custom_api.view_routine = (View_Routine_Function*)
GetProcAddress(win32vars.custom, "view_routine");
#endif
}
if (win32vars.custom_api.get_bindings == 0){
MessageBoxA(0,"Error: The custom dll is missing.\n", "Error",0);
exit(1);
}
#else
win32vars.custom_api.get_bindings = (Get_Binding_Data_Function*)get_bindings;
#endif
win32vars.custom_api.view_routine = (View_Routine_Function*)0;
#if 0
if (win32vars.custom_api.view_routine == 0){
win32vars.custom_api.view_routine = (View_Routine_Function*)view_routine;
}
#endif
//
// Window and GL Initialization
//
WNDCLASS window_class = {};
window_class.style = CS_HREDRAW|CS_VREDRAW;
window_class.lpfnWndProc = Win32Callback;
window_class.hInstance = hInstance;
window_class.lpszClassName = "4coder-win32-wndclass";
window_class.hIcon = LoadIcon(hInstance, "main");
if (!RegisterClass(&window_class)){
exit(1);
}
RECT window_rect = {};
if (win32vars.settings.set_window_size){
window_rect.right = win32vars.settings.window_w;
window_rect.bottom = win32vars.settings.window_h;
}
else{
window_rect.right = 800;
window_rect.bottom = 600;
}
if (!AdjustWindowRect(&window_rect, WS_OVERLAPPEDWINDOW, false)){
// TODO(allen): non-fatal diagnostics
}
#define WINDOW_NAME "4coder-window: " VERSION
i32 window_x = CW_USEDEFAULT;
i32 window_y = CW_USEDEFAULT;
if (win32vars.settings.set_window_pos){
window_x = win32vars.settings.window_x;
window_y = win32vars.settings.window_y;
}
i32 window_style = WS_OVERLAPPEDWINDOW;
if (!win32vars.settings.fullscreen_window && win32vars.settings.maximize_window){
window_style |= WS_MAXIMIZE;
}
win32vars.window_handle =
CreateWindowA(window_class.lpszClassName,
WINDOW_NAME, window_style,
window_x, window_y,
window_rect.right - window_rect.left,
window_rect.bottom - window_rect.top,
0, 0, hInstance, 0);
if (win32vars.window_handle == 0){
exit(1);
}
HDC hdc = GetDC(win32vars.window_handle);
#if SUPPORT_DPI
// TODO(allen): not Windows XP compatible, how do I handle that?
SetProcessDPIAware();
win32vars.dpi_x = GetDeviceCaps(hdc, LOGPIXELSX);
win32vars.dpi_y = GetDeviceCaps(hdc, LOGPIXELSY);
#else
win32vars.dpi_x = 1;
win32vars.dpi_y = 1;
#endif
GetClientRect(win32vars.window_handle, &window_rect);
DWORD pfd_flags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL;
// NOTE(allen): This is probably not an issue on linux and
// does not need to be ported.
if (!win32vars.settings.stream_mode){
pfd_flags |= PFD_DOUBLEBUFFER;
}
static PIXELFORMATDESCRIPTOR pfd = {
sizeof(PIXELFORMATDESCRIPTOR),
1,
pfd_flags,
PFD_TYPE_RGBA,
32,
0, 0, 0, 0, 0, 0,
0,
0,
0,
0, 0, 0, 0,
16,
0,
0,
PFD_MAIN_PLANE,
0,
0, 0, 0 };
{
i32 pixel_format;
pixel_format = ChoosePixelFormat(hdc, &pfd);
SetPixelFormat(hdc, pixel_format, &pfd);
win32vars.target.handle = hdc;
win32vars.target.context = wglCreateContext(hdc);
wglMakeCurrent(hdc, (HGLRC)win32vars.target.context);
}
ReleaseDC(win32vars.window_handle, hdc);
#if FRED_INTERNAL
// NOTE(casey): This slows down GL but puts error messages to
// the debug console immediately whenever you do something wrong
glDebugMessageCallback_type *glDebugMessageCallback =
(glDebugMessageCallback_type *)wglGetProcAddress("glDebugMessageCallback");
glDebugMessageControl_type *glDebugMessageControl =
(glDebugMessageControl_type *)wglGetProcAddress("glDebugMessageControl");
if(glDebugMessageCallback && glDebugMessageControl)
{
glDebugMessageCallback(OpenGLDebugCallback, 0);
glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, 0, GL_TRUE);
glEnable(GL_DEBUG_OUTPUT);
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
}
#endif
glEnable(GL_TEXTURE_2D);
glEnable(GL_SCISSOR_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
Win32Resize(window_rect.right - window_rect.left, window_rect.bottom - window_rect.top);
//
// Misc System Initializations
//
win32vars.clipboard_sequence = GetClipboardSequenceNumber();
if (win32vars.clipboard_sequence == 0){
system_post_clipboard(make_lit_string(""));
win32vars.clipboard_sequence = GetClipboardSequenceNumber();
win32vars.next_clipboard_is_self = 0;
if (win32vars.clipboard_sequence == 0){
OutputDebugStringA("Failure while initializing clipboard\n");
}
}
else{
Win32ReadClipboardContents();
}
Win32KeycodeInit();
win32vars.cursor_ibeam = LoadCursor(NULL, IDC_IBEAM);
win32vars.cursor_arrow = LoadCursor(NULL, IDC_ARROW);
win32vars.cursor_leftright = LoadCursor(NULL, IDC_SIZEWE);
win32vars.cursor_updown = LoadCursor(NULL, IDC_SIZENS);
LARGE_INTEGER f;
if (QueryPerformanceFrequency(&f)){
win32vars.count_per_usecond = (u64)f.QuadPart / 1000000;
}
else{
// NOTE(allen): Just guess.
win32vars.count_per_usecond = 1;
}
//
// Main Loop
//
win32vars.app.init(&win32vars.system,
&win32vars.target,
&memory_vars,
win32vars.clipboard_contents,
current_directory,
win32vars.custom_api);
system_free_memory(current_directory.str);
b32 keep_playing = 1;
win32vars.first = 1;
timeBeginPeriod(1);
if (win32vars.settings.fullscreen_window){
Win32ToggleFullscreen();
}
SetForegroundWindow(win32vars.window_handle);
SetActiveWindow(win32vars.window_handle);
ShowWindow(win32vars.window_handle, SW_SHOW);
u64 timer_start = Win32HighResolutionTime();
system_acquire_lock(FRAME_LOCK);
MSG msg;
for (;keep_playing;){
// TODO(allen): Find a good way to wait on a pipe
// without interfering with the reading process
// Looks like we can ReadFile with a size of zero
// in an IOCP for this effect.
// NOTE(allen): When we're in stream mode we don't have
// double buffering so we need to move ahead and call
// the first step right away so it will render into the
// window. With double buffering this is not an issue
// for reasons I cannot at all comprehend.
if (!(win32vars.first && win32vars.settings.stream_mode)){
system_release_lock(FRAME_LOCK);
if (win32vars.running_cli == 0){
win32vars.got_useful_event = 0;
for (;win32vars.got_useful_event == 0;){
if (GetMessage(&msg, 0, 0, 0)){
if (msg.message == WM_QUIT){
keep_playing = 0;
}else{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
}
}
while (PeekMessage(&msg, 0, 0, 0, 1)){
if (msg.message == WM_QUIT){
keep_playing = 0;
}else{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
system_acquire_lock(FRAME_LOCK);
}
POINT mouse_point;
if (GetCursorPos(&mouse_point) &&
ScreenToClient(win32vars.window_handle, &mouse_point)){
i32_Rect screen =
i32R(0, 0, win32vars.target.width, win32vars.target.height);
if (!hit_check(mouse_point.x, mouse_point.y, screen)){
win32vars.input_chunk.trans.out_of_window = 1;
}
win32vars.input_chunk.pers.mouse_x = mouse_point.x;
win32vars.input_chunk.pers.mouse_y = mouse_point.y;
}
else{
win32vars.input_chunk.trans.out_of_window = 1;
}
Win32_Input_Chunk input_chunk = win32vars.input_chunk;
win32vars.input_chunk.trans = null_input_chunk_transient;
input_chunk.pers.control_keys[MDFR_CAPS_INDEX] = GetKeyState(VK_CAPITAL) & 0x1;
win32vars.clipboard_contents = null_string;
if (win32vars.clipboard_sequence != 0){
DWORD new_number = GetClipboardSequenceNumber();
if (new_number != win32vars.clipboard_sequence){
win32vars.clipboard_sequence = new_number;
if (win32vars.next_clipboard_is_self){
win32vars.next_clipboard_is_self = 0;
}
else{
Win32ReadClipboardContents();
}
}
}
Application_Step_Input input = {0};
input.first_step = win32vars.first;
// NOTE(allen): The expected dt given the frame limit in seconds.
input.dt = frame_useconds / 1000000.f;
input.keys = input_chunk.trans.key_data;
memcpy(input.keys.modifiers, input_chunk.pers.control_keys, sizeof(input_chunk.pers.control_keys));
input.mouse.out_of_window = input_chunk.trans.out_of_window;
input.mouse.l = input_chunk.pers.mouse_l;
input.mouse.press_l = input_chunk.trans.mouse_l_press;
input.mouse.release_l = input_chunk.trans.mouse_l_release;
input.mouse.r = input_chunk.pers.mouse_r;
input.mouse.press_r = input_chunk.trans.mouse_r_press;
input.mouse.release_r = input_chunk.trans.mouse_r_release;
input.mouse.wheel = input_chunk.trans.mouse_wheel;
input.mouse.x = input_chunk.pers.mouse_x;
input.mouse.y = input_chunk.pers.mouse_y;
input.clipboard = win32vars.clipboard_contents;
Application_Step_Result result = {(Application_Mouse_Cursor)0};
result.mouse_cursor_type = APP_MOUSE_CURSOR_DEFAULT;
result.lctrl_lalt_is_altgr = win32vars.lctrl_lalt_is_altgr;
result.trying_to_kill = input_chunk.trans.trying_to_kill;
result.perform_kill = 0;
if (win32vars.send_exit_signal){
result.trying_to_kill = 1;
win32vars.send_exit_signal = 0;
}
win32vars.app.step(&win32vars.system,
&win32vars.target,
&memory_vars,
&input,
&result,
clparams);
if (result.perform_kill){
keep_playing = 0;
}
if (win32vars.do_toggle){
Win32ToggleFullscreen();
win32vars.do_toggle = 0;
}
Win32SetCursorFromUpdate(result.mouse_cursor_type);
win32vars.lctrl_lalt_is_altgr = result.lctrl_lalt_is_altgr;
HDC hdc = GetDC(win32vars.window_handle);
Win32RedrawScreen(hdc);
ReleaseDC(win32vars.window_handle, hdc);
win32vars.first = 0;
if (result.animating){
PostMessage(win32vars.window_handle, WM_4coder_ANIMATE, 0, 0);
}
flush_thread_group(BACKGROUND_THREADS);
u64 timer_end = Win32HighResolutionTime();
u64 end_target = timer_start + frame_useconds;
system_release_lock(FRAME_LOCK);
while (timer_end < end_target){
DWORD samount = (DWORD)((end_target - timer_end) / 1000);
if (samount > 0) Sleep(samount);
timer_end = Win32HighResolutionTime();
}
system_acquire_lock(FRAME_LOCK);
timer_start = Win32HighResolutionTime();
}
return(0);
}
#if 0
// NOTE(allen): In case I want to switch back to a console
// application at some point.
int main(int argc, char **argv){
HINSTANCE hInstance = GetModuleHandle(0);
#endif
// BOTTOM
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