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4coder/platform_win32/win32_4ed.cpp

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/*
* Mr. 4th Dimention - Allen Webster
*
* 12.12.2014
*
* Win32 layer for 4coder
*
*/
// TOP
#define IS_PLAT_LAYER
//
// Program setup
//
#define UNICODE
#define FPS 60
#define frame_useconds (1000000 / FPS)
#include "4coder_base_types.h"
#include "4coder_table.h"
#include "4coder_API/4coder_version.h"
#include <string.h>
#include "4coder_lib/4coder_utf8.h"
#if defined(FRED_SUPER)
# include "4coder_base_types.cpp"
# include "4coder_stringf.cpp"
# include "4coder_hash_functions.cpp"
# include "4coder_table.cpp"
# include "4coder_log.cpp"
# include "4coder_API/4coder_keycodes.h"
# include "4coder_API/4coder_default_colors.h"
# include "4coder_API/4coder_types.h"
#else
# include "4coder_default_bindings.cpp"
#endif
#include "4ed_font_interface.h"
#include "4ed_font_set.h"
#include "4ed_system.h"
#include "4ed_render_target.h"
#include "4ed.h"
#include <Windows.h>
#include "win32_gl.h"
#define GL_TEXTURE_MAX_LEVEL 0x813D
//////////////////////////////
enum{
ErrorString_UseLog = 0,
ErrorString_UseErrorBox = 1,
};
internal void
win32_output_error_string(Arena *scratch, i32 error_string_type);
//////////////////////////////
#include "win32_utf8.h"
#include "4ed_system_shared.h"
#define WM_4coder_ANIMATE (WM_USER + 0)
struct Control_Keys{
b8 l_ctrl;
b8 r_ctrl;
b8 l_alt;
b8 r_alt;
};
global Control_Keys null_control_keys = {};
struct Win32_Input_Chunk_Transient{
Key_Input_Data key_data;
b8 mouse_l_press;
b8 mouse_l_release;
b8 mouse_r_press;
b8 mouse_r_release;
b8 out_of_window;
i8 mouse_wheel;
b8 trying_to_kill;
};
global Win32_Input_Chunk_Transient null_input_chunk_transient = {};
struct Win32_Input_Chunk_Persistent{
Vec2_i32 mouse;
Control_Keys controls;
b8 mouse_l;
b8 mouse_r;
b8 control_keys[MDFR_INDEX_COUNT];
};
struct Win32_Input_Chunk{
Win32_Input_Chunk_Transient trans;
Win32_Input_Chunk_Persistent pers;
};
////////////////////////////////
#define SLASH '\\'
#define DLL "dll"
global System_Functions sysfunc;
#include "4ed_shared_library_constants.h"
#include "win32_library_wrapper.h"
#include "4ed_standard_libraries.cpp"
#include "4ed_font_face.cpp"
#include "4ed_mem.cpp"
#include "4coder_hash_functions.cpp"
#include "4ed_system_allocator.cpp"
#include "4ed_font_set.cpp"
////////////////////////////////
typedef i32 Win32_Object_Kind;
enum{
Win32ObjectKind_ERROR = 0,
Win32ObjectKind_Timer = 1,
Win32ObjectKind_Thread = 2,
Win32ObjectKind_Mutex = 3,
Win32ObjectKind_CV = 4,
};
struct Win32_Object{
Node node;
Win32_Object_Kind kind;
union{
struct{
UINT_PTR id;
} timer;
struct{
HANDLE thread;
Thread_Function *proc;
void *ptr;
} thread;
CRITICAL_SECTION mutex;
CONDITION_VARIABLE cv;
};
};
struct Win32_Vars{
Arena arena;
Win32_Input_Chunk input_chunk;
b8 lctrl_lalt_is_altgr;
b8 got_useful_event;
b8 full_screen;
b8 do_toggle;
WINDOWPLACEMENT bordered_win_pos;
b32 send_exit_signal;
HCURSOR cursor_ibeam;
HCURSOR cursor_arrow;
HCURSOR cursor_leftright;
HCURSOR cursor_updown;
i32 cursor_show;
i32 prev_cursor_show;
String_Const_u8 binary_path;
u8 *clip_buffer;
u32 clip_max;
String_Const_u8 clipboard_contents;
b32 next_clipboard_is_self;
DWORD clipboard_sequence;
Arena clip_post_arena;
String_Const_u8 clip_post;
HWND window_handle;
i32 dpi_x;
i32 dpi_y;
f64 count_per_usecond;
b32 first;
i32 running_cli;
Node free_win32_objects;
Node timer_objects;
UINT_PTR timer_counter;
CRITICAL_SECTION thread_launch_mutex;
CONDITION_VARIABLE thread_launch_cv;
b32 waiting_for_launch;
Log_Function *log_string;
};
////////////////////////////////
global Win32_Vars win32vars;
global Render_Target target;
global Application_Memory memory_vars;
global Plat_Settings plat_settings;
global Libraries libraries;
global App_Functions app;
global Custom_API custom_api;
////////////////////////////////
internal void
system_error_box(Arena *scratch, char *msg, b32 shutdown = true){
//LOGF("error box: %s\n", msg);
MessageBox_utf8(scratch, 0, (u8*)msg, (u8*)"Error", 0);
if (shutdown){
exit(1);
}
}
////////////////////////////////
internal void
win32_output_error_string(Arena *scratch, b32 use_error_box){
DWORD error = GetLastError();
char *str = 0;
char *str_ptr = (char*)&str;
if (FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, 0, error, 0, str_ptr, 0, 0)){
if (use_error_box){
system_error_box(scratch, str, false);
}
}
}
////////////////////////////////
internal HANDLE
handle_type(Plat_Handle h){
HANDLE result;
block_copy(&result, &h, sizeof(result));
return(result);
}
internal Plat_Handle
handle_type(HANDLE h){
Plat_Handle result = {};
block_copy(&result, &h, sizeof(h));
return(result);
}
internal void*
handle_type_ptr(Plat_Handle h){
void *result;
block_copy(&result, &h, sizeof(result));
return(result);
}
internal Plat_Handle
handle_type_ptr(void *ptr){
Plat_Handle result = {};
block_copy(&result, &ptr, sizeof(ptr));
return(result);
}
////////////////////////////////
#include "win32_4ed_functions.cpp"
////////////////////////////////
internal void
system_schedule_step(u32 code){
PostMessage(win32vars.window_handle, WM_4coder_ANIMATE, code, 0);
}
////////////////////////////////
internal void
win32_toggle_fullscreen(){
HWND win = win32vars.window_handle;
DWORD style = GetWindowLongW(win, GWL_STYLE);
b32 is_full = ((style & WS_OVERLAPPEDWINDOW) == 0);
if (!is_full){
MONITORINFO info = {sizeof(MONITORINFO)};
if (GetWindowPlacement(win, &win32vars.bordered_win_pos) && GetMonitorInfo(MonitorFromWindow(win, MONITOR_DEFAULTTOPRIMARY), &info)){
SetWindowLongW(win, GWL_STYLE, style & ~WS_OVERLAPPEDWINDOW);
i32 x = info.rcMonitor.left;
i32 y = info.rcMonitor.top;
i32 w = info.rcMonitor.right - info.rcMonitor.left;
i32 h = info.rcMonitor.bottom - info.rcMonitor.top;
SetWindowPos(win, HWND_TOP, x, y, w, h, SWP_NOOWNERZORDER | SWP_FRAMECHANGED | SWP_SHOWWINDOW);
win32vars.full_screen = true;
}
}
else{
SetWindowLongW(win, GWL_STYLE, style | WS_OVERLAPPEDWINDOW);
SetWindowPlacement(win, &win32vars.bordered_win_pos);
SetWindowPos(win, 0, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOOWNERZORDER | SWP_FRAMECHANGED);
win32vars.full_screen = false;
}
}
// TODO(allen): add a "shown but auto-hides on timer" setting here.
internal
Sys_Show_Mouse_Cursor_Sig(system_show_mouse_cursor){
win32vars.cursor_show = show;
}
internal
Sys_Set_Fullscreen_Sig(system_set_fullscreen){
// NOTE(allen): If the new value of full_screen does not match the current value,
// set toggle to true.
win32vars.do_toggle = (win32vars.full_screen != full_screen);
b32 success = true;
return(success);
}
internal
Sys_Is_Fullscreen_Sig(system_is_fullscreen){
// NOTE(allen): Report the fullscreen status as it would be set at the beginning of the next frame.
// That is, take into account all fullscreen toggle requests that have come in already this frame.
// Read: "full_screen XOR do_toggle"
b32 result = (win32vars.full_screen != win32vars.do_toggle);
return(result);
}
#include "4ed_system_shared.cpp"
//
// Clipboard
//
internal void
win32_post_clipboard(Arena *scratch, char *text, i32 len){
if (OpenClipboard(win32vars.window_handle)){
if (!EmptyClipboard()){
win32_output_error_string(scratch, ErrorString_UseLog);
}
HANDLE memory_handle = GlobalAlloc(GMEM_MOVEABLE, len + 1);
if (memory_handle){
char *dest = (char*)GlobalLock(memory_handle);
memmove(dest, text, len);
dest[len] = 0;
GlobalUnlock(memory_handle);
SetClipboardData(CF_TEXT, memory_handle);
win32vars.next_clipboard_is_self = true;
}
CloseClipboard();
}
}
internal
Sys_Post_Clipboard_Sig(system_post_clipboard){
Arena *arena = &win32vars.clip_post_arena;
if (arena->base_allocator == 0){
*arena = make_arena_system(&sysfunc);
}
else{
linalloc_clear(arena);
}
win32vars.clip_post.str = push_array(arena, u8, str.size + 1);
if (win32vars.clip_post.str != 0){
block_copy(win32vars.clip_post.str, str.str, str.size);
win32vars.clip_post.str[str.size] = 0;
win32vars.clip_post.size = str.size;
}
else{
//LOGF("Failed to allocate buffer for clipboard post (%d)\n", (i32)str.size + 1);
}
}
internal b32
win32_read_clipboard_contents(Arena *scratch){
Temp_Memory temp = begin_temp(scratch);
b32 result = false;
b32 has_text = false;
b32 has_unicode = IsClipboardFormatAvailable(CF_UNICODETEXT);
if (!has_unicode){
has_text = IsClipboardFormatAvailable(CF_TEXT);
}
b32 can_read = has_unicode || has_text;
if (can_read){
if (OpenClipboard(win32vars.window_handle)){
result = true;
HANDLE clip_data = 0;
i32 contents_length = 0;
if (has_unicode){
clip_data = GetClipboardData(CF_UNICODETEXT);
if (clip_data != 0){
u16 *clip_16 = (u16*)GlobalLock(clip_data);
if (clip_16 != 0){
u32 clip_16_len = 0;
for(;clip_16[clip_16_len];++clip_16_len);
b32 error = false;
u32 clip_8_len = (u32)utf16_to_utf8_minimal_checking(win32vars.clip_buffer, win32vars.clip_max-1, clip_16, clip_16_len, &error);
for (;clip_8_len >= win32vars.clip_max && !error;){
system_memory_free(win32vars.clip_buffer, win32vars.clip_max);
win32vars.clip_max = round_up_u32(clip_8_len + 1, KB(4));
win32vars.clip_buffer = (u8*)system_memory_allocate(win32vars.clip_max);
clip_8_len = (u32)utf16_to_utf8_minimal_checking(win32vars.clip_buffer, win32vars.clip_max - 1, clip_16, clip_16_len, &error);
}
if (clip_8_len < win32vars.clip_max && !error){
win32vars.clip_buffer[clip_8_len] = 0;
contents_length = clip_8_len + 1;
}
}
}
}
else{
clip_data = GetClipboardData(CF_TEXT);
if (clip_data != 0){
char *clip_ascii = (char*)GlobalLock(clip_data);
if (clip_ascii != 0){
u32 clip_ascii_len = 0;
for(;clip_ascii[clip_ascii_len];++clip_ascii_len);
if (clip_ascii_len >= win32vars.clip_max){
system_memory_free(win32vars.clip_buffer, win32vars.clip_max);
win32vars.clip_max = round_up_u32(clip_ascii_len + 1, KB(4));
win32vars.clip_buffer = (u8*)system_memory_allocate(win32vars.clip_max);
}
memcpy(win32vars.clip_buffer, clip_ascii, clip_ascii_len + 1);
contents_length = clip_ascii_len + 1;
}
}
}
if (contents_length > 0){
win32vars.clipboard_contents = SCu8(win32vars.clip_buffer, contents_length - 1);
}
GlobalUnlock(clip_data);
CloseClipboard();
}
}
end_temp(temp);
return(result);
}
//
// Command Line Exectuion
//
internal
Sys_CLI_Call_Sig(system_cli_call, scratch, path, script_name, cli_out){
Assert(sizeof(Plat_Handle) >= sizeof(HANDLE));
char cmd[] = "c:\\windows\\system32\\cmd.exe";
char *env_variables = 0;
Temp_Memory temp = begin_temp(scratch);
String_Const_u8 s = push_u8_stringf(scratch, "/C %s", script_name);
b32 success = false;
*(HANDLE*)&cli_out->proc = INVALID_HANDLE_VALUE;
*(HANDLE*)&cli_out->out_read = INVALID_HANDLE_VALUE;
*(HANDLE*)&cli_out->out_write = INVALID_HANDLE_VALUE;
*(HANDLE*)&cli_out->in_read = INVALID_HANDLE_VALUE;
*(HANDLE*)&cli_out->in_write = INVALID_HANDLE_VALUE;
SECURITY_ATTRIBUTES security_atrb = {};
security_atrb.nLength = sizeof(SECURITY_ATTRIBUTES);
security_atrb.bInheritHandle = TRUE;
HANDLE out_read = INVALID_HANDLE_VALUE;
HANDLE out_write = INVALID_HANDLE_VALUE;
if (CreatePipe(&out_read, &out_write, &security_atrb, 0)){
if (SetHandleInformation(out_read, HANDLE_FLAG_INHERIT, 0)){
STARTUPINFO startup = {};
startup.cb = sizeof(STARTUPINFO);
startup.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
HANDLE in_read = CreateFileA("nul", GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE, &security_atrb, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
startup.hStdInput = in_read;
startup.hStdOutput = out_write;
startup.hStdError = out_write;
startup.wShowWindow = SW_HIDE;
PROCESS_INFORMATION info = {};
if (CreateProcess_utf8(scratch, (u8*)cmd, s.str, 0, 0, TRUE, 0, env_variables, (u8*)path, &startup, &info)){
success = true;
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);
CloseHandle(in_read);
}
}
else{
// TODO(allen): failed SetHandleInformation
CloseHandle(out_read);
CloseHandle(out_write);
}
}
else{
// TODO(allen): failed CreatePipe
}
end_temp(temp);
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);
Assert(remaining == read_amount);
pos += remaining;
remaining = 0;
}
else{
has_more = 1;
ReadFile(handle, dest + pos, max - pos, &read_amount, 0);
Assert(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 = false;
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 = true;
CloseHandle(*(HANDLE*)&cli->proc);
CloseHandle(*(HANDLE*)&cli->out_read);
CloseHandle(*(HANDLE*)&cli->out_write);
if (*(HANDLE*)&cli->in_read != INVALID_HANDLE_VALUE){
CloseHandle(*(HANDLE*)&cli->in_read);
}
if (*(HANDLE*)&cli->in_write != INVALID_HANDLE_VALUE){
CloseHandle(*(HANDLE*)&cli->in_write);
}
--win32vars.running_cli;
}
return(close_me);
}
#include "4ed_font_provider_freetype.h"
#include "4ed_font_provider_freetype.cpp"
#include <GL/gl.h>
#include "opengl/4ed_opengl_render.cpp"
//
// Helpers
//
global Key_Code keycode_lookup_table[255];
internal void
win32_keycode_init(void){
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_CONTROL] = key_ctrl;
keycode_lookup_table[VK_LCONTROL] = key_ctrl;
keycode_lookup_table[VK_RCONTROL] = key_ctrl;
keycode_lookup_table[VK_MENU] = key_alt;
keycode_lookup_table[VK_LMENU] = key_alt;
keycode_lookup_table[VK_RMENU] = key_alt;
keycode_lookup_table[VK_SHIFT] = key_shift;
keycode_lookup_table[VK_LSHIFT] = key_shift;
keycode_lookup_table[VK_RSHIFT] = key_shift;
keycode_lookup_table[VK_PAUSE] = key_pause;
keycode_lookup_table[VK_CAPITAL] = key_caps;
keycode_lookup_table[VK_NUMLOCK] = key_num_lock;
keycode_lookup_table[VK_SCROLL] = key_scroll_lock;
keycode_lookup_table[VK_APPS] = key_menu;
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
win32_resize(i32 width, i32 height){
if (width > 0 && height > 0){
target.width = width;
target.height = height;
}
}
#if 0
internal void
win32_init_gl(HDC hdc){
//LOG("trying to load wgl extensions...\n");
#define GLInitFail(s) system_error_box(FNLN "\nOpenGL init fail - " s )
// Init First Context
WNDCLASSA wglclass = {};
wglclass.lpfnWndProc = DefWindowProcA;
wglclass.hInstance = GetModuleHandle(0);
wglclass.lpszClassName = "4ed-wgl-loader";
if (RegisterClassA(&wglclass) == 0){
GLInitFail("RegisterClassA");
}
HWND hwglwnd = CreateWindowExA(0, wglclass.lpszClassName, "", 0, 0, 0, 0, 0, 0, 0, wglclass.hInstance, 0);
if (hwglwnd == 0){
GLInitFail("CreateWindowExA");
}
HDC hwgldc = GetDC(hwglwnd);
PIXELFORMATDESCRIPTOR format = {};
format.nSize = sizeof(format);
format.nVersion = 1;
//format.dwFlags = PFD_SUPPORT_OPENGL | PFD_DRAW_TO_WINDOW | PFD_DOUBLEBUFFER;
format.dwFlags = PFD_SUPPORT_OPENGL | PFD_DRAW_TO_WINDOW;
format.iPixelType = PFD_TYPE_RGBA;
format.cColorBits = 32;
format.cAlphaBits = 8;
format.cDepthBits = 24;
format.iLayerType = PFD_MAIN_PLANE;
i32 suggested_format_index = ChoosePixelFormat(hwgldc, &format);
if (suggested_format_index == 0){
win32_output_error_string(ErrorString_UseErrorBox);
GLInitFail("ChoosePixelFormat");
}
DescribePixelFormat(hwgldc, suggested_format_index, sizeof(format), &format);
if (!SetPixelFormat(hwgldc, suggested_format_index, &format)){
win32_output_error_string(ErrorString_UseErrorBox);
GLInitFail("SetPixelFormat");
}
HGLRC wglcontext = wglCreateContext(hwgldc);
if (wglcontext == 0){
win32_output_error_string(ErrorString_UseErrorBox);
GLInitFail("wglCreateContext");
}
if (!wglMakeCurrent(hwgldc, wglcontext)){
win32_output_error_string(ErrorString_UseErrorBox);
GLInitFail("wglMakeCurrent");
}
// Load wgl Extensions
#define LoadWGL(f, s) f = (f##_Function*)wglGetProcAddress(#f); b32 got_##f = GLFuncGood(f); \
if (!got_##f) { if (s) { GLInitFail(#f " missing"); } else { f = 0; } }
LoadWGL(wglCreateContextAttribsARB, true);
LoadWGL(wglChoosePixelFormatARB, true);
LoadWGL(wglGetExtensionsStringEXT, true);
//LOG("got wgl functions\n");
char *extensions_c = wglGetExtensionsStringEXT();
String extensions = make_string_slowly(extensions_c);
if (has_substr(extensions, make_lit_string("WGL_EXT_swap_interval"))){
LoadWGL(wglSwapIntervalEXT, false);
if (wglSwapIntervalEXT != 0){
//LOG("got wglSwapIntervalEXT\n");
}
}
// Init the Second Context
int pixel_attrib_list[] = {
WGL_DRAW_TO_WINDOW_ARB, TRUE,
WGL_ACCELERATION_ARB, WGL_FULL_ACCELERATION_ARB,
WGL_SUPPORT_OPENGL_ARB, TRUE,
//WGL_DOUBLE_BUFFER_ARB, TRUE,
WGL_DOUBLE_BUFFER_ARB, FALSE,
WGL_PIXEL_TYPE_ARB, WGL_TYPE_RGBA_ARB,
0,
};
u32 ignore = 0;
if (!wglChoosePixelFormatARB(hdc, pixel_attrib_list, 0, 1, &suggested_format_index, &ignore)){
GLInitFail("wglChoosePixelFormatARB");
}
DescribePixelFormat(hdc, suggested_format_index, sizeof(format), &format);
if (!SetPixelFormat(hdc, suggested_format_index, &format)){
GLInitFail("SetPixelFormat");
}
i32 context_attrib_list[] = {
WGL_CONTEXT_MAJOR_VERSION_ARB, 2,
WGL_CONTEXT_MINOR_VERSION_ARB, 1,
WGL_CONTEXT_FLAGS_ARB, 0,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
0
};
HGLRC context = wglCreateContextAttribsARB(hdc, 0, context_attrib_list);
if (context == 0){
GLInitFail("wglCreateContextAttribsARB");
}
wglMakeCurrent(hdc, context);
if (wglSwapIntervalEXT != 0){
//LOGF("setting swap interval %d\n", 1);
wglSwapIntervalEXT(1);
}
ReleaseDC(hwglwnd, hwgldc);
DestroyWindow(hwglwnd);
wglDeleteContext(wglcontext);
//LOG("successfully enabled opengl\n");
}
#endif
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 Win32_Object*
win32_alloc_object(Win32_Object_Kind kind){
Win32_Object *result = 0;
if (win32vars.free_win32_objects.next != &win32vars.free_win32_objects){
result = CastFromMember(Win32_Object, node, win32vars.free_win32_objects.next);
}
if (result == 0){
i32 count = 512;
Win32_Object *objects = (Win32_Object*)system_memory_allocate(count*sizeof(Win32_Object));
objects[0].node.prev = &win32vars.free_win32_objects;
win32vars.free_win32_objects.next = &objects[0].node;
for (i32 i = 1; i < count; i += 1){
objects[i - 1].node.next = &objects[i].node;
objects[i].node.prev = &objects[i - 1].node;
}
objects[count - 1].node.next = &win32vars.free_win32_objects;
win32vars.free_win32_objects.prev = &objects[count - 1].node;
result = CastFromMember(Win32_Object, node, win32vars.free_win32_objects.next);
}
Assert(result != 0);
dll_remove(&result->node);
block_zero_struct(result);
result->kind = kind;
return(result);
}
internal void
win32_free_object(Win32_Object *object){
if (object->node.next != 0){
dll_remove(&object->node);
}
dll_insert(&win32vars.free_win32_objects, &object->node);
}
////////////////////////////////
internal
Sys_Now_Time_Sig(system_now_time){
u64 result = 0;
LARGE_INTEGER t;
if (QueryPerformanceCounter(&t)){
result = (u64)(t.QuadPart/win32vars.count_per_usecond);
}
return(result);
}
internal
Sys_Wake_Up_Timer_Create_Sig(system_wake_up_timer_create){
Win32_Object *object = win32_alloc_object(Win32ObjectKind_Timer);
dll_insert(&win32vars.timer_objects, &object->node);
object->timer.id = ++win32vars.timer_counter;
return(handle_type(object));
}
internal
Sys_Wake_Up_Timer_Release_Sig(system_wake_up_timer_release){
Win32_Object *object = (Win32_Object*)handle_type_ptr(handle);
if (object->kind == Win32ObjectKind_Timer){
KillTimer(win32vars.window_handle, object->timer.id);
win32_free_object(object);
}
}
internal
Sys_Wake_Up_Timer_Set_Sig(system_wake_up_timer_set){
Win32_Object *object = (Win32_Object*)handle_type_ptr(handle);
if (object->kind == Win32ObjectKind_Timer){
object->timer.id = SetTimer(win32vars.window_handle, object->timer.id, time_milliseconds, 0);
}
}
internal
Sys_Signal_Step_Sig(system_signal_step){
system_schedule_step(code);
}
internal
Sys_Sleep_Sig(system_sleep){
u32 milliseconds = (u32)(microseconds/Thousand(1));
Sleep(milliseconds);
}
////////////////////////////////
internal DWORD
win32_thread_wrapper(void *ptr){
Win32_Object *object = (Win32_Object*)ptr;
Thread_Function *proc = object->thread.proc;
void *object_ptr = object->thread.ptr;
EnterCriticalSection(&win32vars.thread_launch_mutex);
win32vars.waiting_for_launch = false;
WakeConditionVariable(&win32vars.thread_launch_cv);
LeaveCriticalSection(&win32vars.thread_launch_mutex);
proc(object_ptr);
return(0);
}
internal
Sys_Thread_Launch_Sig(system_thread_launch){
Win32_Object *object = win32_alloc_object(Win32ObjectKind_Thread);
object->thread.proc = proc;
object->thread.ptr = ptr;
EnterCriticalSection(&win32vars.thread_launch_mutex);
win32vars.waiting_for_launch = true;
object->thread.thread = CreateThread(0, 0, win32_thread_wrapper, object, 0, 0);
for (;win32vars.waiting_for_launch;){
SleepConditionVariableCS(&win32vars.thread_launch_cv, &win32vars.thread_launch_mutex, INFINITE);
}
LeaveCriticalSection(&win32vars.thread_launch_mutex);
return(handle_type(object));
}
internal
Sys_Thread_Join_Sig(system_thread_join){
Win32_Object *object = (Win32_Object*)handle_type_ptr(thread);
if (object->kind == Win32ObjectKind_Thread){
WaitForSingleObject(object->thread.thread, INFINITE);
}
}
internal
Sys_Thread_Free_Sig(system_thread_free){
Win32_Object *object = (Win32_Object*)handle_type_ptr(thread);
if (object->kind == Win32ObjectKind_Thread){
CloseHandle(object->thread.thread);
win32_free_object(object);
}
}
internal
Sys_Thread_Get_ID_Sig(system_thread_get_id){
DWORD result = GetCurrentThreadId();
return((i32)result);
}
internal
Sys_Mutex_Make_Sig(system_mutex_make){
Win32_Object *object = win32_alloc_object(Win32ObjectKind_Mutex);
InitializeCriticalSection(&object->mutex);
return(handle_type(object));
}
internal
Sys_Mutex_Acquire_Sig(system_mutex_acquire){
Win32_Object *object = (Win32_Object*)handle_type_ptr(mutex);
if (object->kind == Win32ObjectKind_Mutex){
EnterCriticalSection(&object->mutex);
}
}
internal
Sys_Mutex_Release_Sig(system_mutex_release){
Win32_Object *object = (Win32_Object*)handle_type_ptr(mutex);
if (object->kind == Win32ObjectKind_Mutex){
LeaveCriticalSection(&object->mutex);
}
}
internal
Sys_Mutex_Free_Sig(system_mutex_free){
Win32_Object *object = (Win32_Object*)handle_type_ptr(mutex);
if (object->kind == Win32ObjectKind_Mutex){
DeleteCriticalSection(&object->mutex);
win32_free_object(object);
}
}
internal
Sys_Condition_Variable_Make_Sig(system_condition_variable_make){
Win32_Object *object = win32_alloc_object(Win32ObjectKind_CV);
InitializeConditionVariable(&object->cv);
return(handle_type(object));
}
internal
Sys_Condition_Variable_Wait_Sig(system_condition_variable_wait){
Win32_Object *object_cv = (Win32_Object*)handle_type_ptr(cv);
Win32_Object *object_mutex = (Win32_Object*)handle_type_ptr(mutex);
if (object_cv->kind == Win32ObjectKind_CV &&
object_mutex->kind == Win32ObjectKind_Mutex){
SleepConditionVariableCS(&object_cv->cv, &object_mutex->mutex, INFINITE);
}
}
internal
Sys_Condition_Variable_Signal_Sig(system_condition_variable_signal){
Win32_Object *object = (Win32_Object*)handle_type_ptr(cv);
if (object->kind == Win32ObjectKind_CV){
WakeConditionVariable(&object->cv);
}
}
internal
Sys_Condition_Variable_Free_Sig(system_condition_variable_free){
Win32_Object *object = (Win32_Object*)handle_type_ptr(cv);
if (object->kind == Win32ObjectKind_CV){
win32_free_object(object);
}
}
////////////////////////////////
internal LRESULT
win32_proc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam){
LRESULT result = 0;
Arena *scratch = &win32vars.arena;
switch (uMsg){
case WM_MENUCHAR:break;
case WM_SYSKEYDOWN:
case WM_SYSKEYUP:
case WM_KEYDOWN:
case WM_KEYUP:
{
b8 release = HasFlag(lParam, bit_32);
b8 down = !release;
b8 is_right = HasFlag(lParam, bit_25);
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 = &win32vars.input_chunk.pers.controls;
b8 *control_keys = win32vars.input_chunk.pers.control_keys;
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 = (controls->r_ctrl || (controls->l_ctrl && !controls->r_alt));
b8 alt = (controls->l_alt || (controls->r_alt && !controls->l_ctrl));
if (win32vars.lctrl_lalt_is_altgr && controls->l_alt && controls->l_ctrl){
ctrl = false;
alt = false;
}
control_keys[MDFR_CONTROL_INDEX] = ctrl;
control_keys[MDFR_ALT_INDEX] = alt;
}
}break;
}
if (down){
Key_Code key = keycode_lookup_table[(u8)wParam];
if (key != 0){
i32 *count = &win32vars.input_chunk.trans.key_data.count;
Key_Event_Data *data = win32vars.input_chunk.trans.key_data.keys;
b8 *control_keys = win32vars.input_chunk.pers.control_keys;
i32 control_keys_size = sizeof(win32vars.input_chunk.pers.control_keys);
if (*count < KEY_INPUT_BUFFER_SIZE){
data[*count].character = 0;
data[*count].character_no_caps_lock = 0;
data[*count].keycode = key;
memcpy(data[*count].modifiers, control_keys, control_keys_size);
++(*count);
}
win32vars.got_useful_event = true;
}
}
}break;
case WM_CHAR: case WM_SYSCHAR: case WM_UNICHAR:
{
u16 character = (u16)wParam;
if (character == '\r'){
character = '\n';
}
else if (character == '\t'){
// Do nothing
}
else if (character < 32 || character == 127){
break;
}
u16 character_no_caps_lock = character;
i32 *count = &win32vars.input_chunk.trans.key_data.count;
Key_Event_Data *data = win32vars.input_chunk.trans.key_data.keys;
b8 *control_keys = win32vars.input_chunk.pers.control_keys;
i32 control_keys_size = sizeof(win32vars.input_chunk.pers.control_keys);
BYTE state[256];
GetKeyboardState(state);
if (state[VK_CAPITAL]){
if (character_no_caps_lock >= 'a' && character_no_caps_lock <= 'z'){
character_no_caps_lock -= (u8)('a' - 'A');
}
else if (character_no_caps_lock >= 'A' && character_no_caps_lock <= 'Z'){
character_no_caps_lock += (u8)('a' - 'A');
}
}
if (*count < KEY_INPUT_BUFFER_SIZE){
data[*count].character = character;
data[*count].character_no_caps_lock = character_no_caps_lock;
data[*count].keycode = character_no_caps_lock;
memcpy(data[*count].modifiers, control_keys, control_keys_size);
++(*count);
}
win32vars.got_useful_event = true;
}break;
case WM_MOUSEMOVE:
{
Vec2_i32 new_m = V2i32(LOWORD(lParam), HIWORD(lParam));
if (new_m != win32vars.input_chunk.pers.mouse){
win32vars.input_chunk.pers.mouse = new_m;
win32vars.got_useful_event = true;
}
}break;
case WM_MOUSEWHEEL:
{
win32vars.got_useful_event = true;
i32 rotation = GET_WHEEL_DELTA_WPARAM(wParam);
if (rotation > 0){
win32vars.input_chunk.trans.mouse_wheel = -100;
}
else{
win32vars.input_chunk.trans.mouse_wheel = 100;
}
}break;
case WM_LBUTTONDOWN:
{
win32vars.got_useful_event = true;
win32vars.input_chunk.trans.mouse_l_press = 1;
win32vars.input_chunk.pers.mouse_l = 1;
}break;
case WM_RBUTTONDOWN:
{
win32vars.got_useful_event = true;
win32vars.input_chunk.trans.mouse_r_press = 1;
win32vars.input_chunk.pers.mouse_r = 1;
}break;
case WM_LBUTTONUP:
{
win32vars.got_useful_event = true;
win32vars.input_chunk.trans.mouse_l_release = 1;
win32vars.input_chunk.pers.mouse_l = 0;
}break;
case WM_RBUTTONUP:
{
win32vars.got_useful_event = true;
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 = true;
win32vars.input_chunk.pers.mouse_l = 0;
win32vars.input_chunk.pers.mouse_r = 0;
for (i32 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 = true;
i32 new_width = LOWORD(lParam);
i32 new_height = HIWORD(lParam);
win32_resize(new_width, new_height);
}break;
case WM_DISPLAYCHANGE:
{
win32vars.got_useful_event = true;
LONG_PTR style = GetWindowLongPtr(hwnd, GWL_STYLE);
if (!(style & WS_OVERLAPPEDWINDOW)){
MONITORINFO monitor_info = {sizeof(MONITORINFO)};
if(GetMonitorInfo(MonitorFromWindow(hwnd, MONITOR_DEFAULTTOPRIMARY), &monitor_info))
{
SetWindowPos(hwnd, HWND_TOP,
monitor_info.rcMonitor.left, monitor_info.rcMonitor.top,
monitor_info.rcMonitor.right - monitor_info.rcMonitor.left,
monitor_info.rcMonitor.bottom - monitor_info.rcMonitor.top,
SWP_NOOWNERZORDER | SWP_FRAMECHANGED);
}
}
}break;
case WM_PAINT:
{
win32vars.got_useful_event = true;
PAINTSTRUCT ps;
HDC hdc = BeginPaint(hwnd, &ps);
// NOTE(allen): Do nothing?
EndPaint(hwnd, &ps);
}break;
case WM_CLIPBOARDUPDATE:
{
win32vars.got_useful_event = true;
LogEventLit(win32vars.log_string(M), scratch, 0, 0, system_thread_get_id(),
"new clipboard contents");
}break;
case WM_CLOSE:
case WM_DESTROY:
{
win32vars.got_useful_event = true;
win32vars.input_chunk.trans.trying_to_kill = true;
}break;
case WM_TIMER:
{
UINT_PTR timer_id = (UINT_PTR)wParam;
KillTimer(win32vars.window_handle, timer_id);
win32vars.got_useful_event = true;
}break;
case WM_4coder_ANIMATE:
{
win32vars.got_useful_event = true;
}break;
default:
{
result = DefWindowProc(hwnd, uMsg, wParam, lParam);
}break;
}
return(result);
}
////////////////////////////////
internal b32
win32_wgl_good(Void_Func *f){
return(f != 0 &&
f != (Void_Func*)1 &&
f != (Void_Func*)2 &&
f != (Void_Func*)3 &&
f != (Void_Func*)-1);
}
typedef HGLRC (wglCreateContextAttribsARB_Function)(HDC,HGLRC,i32*);
typedef BOOL (wglChoosePixelFormatARB_Function)(HDC,i32*,f32*,u32,i32*,u32*);
typedef char* (wglGetExtensionsStringEXT_Function)();
typedef VOID (wglSwapIntervalEXT_Function)(i32);
global wglCreateContextAttribsARB_Function *wglCreateContextAttribsARB = 0;
global wglChoosePixelFormatARB_Function *wglChoosePixelFormatARB = 0;
global wglGetExtensionsStringEXT_Function *wglGetExtensionsStringEXT = 0;
global wglSwapIntervalEXT_Function *wglSwapIntervalEXT = 0;
// TODO(allen): This requires all windows to be handled on a single thread.
// We would need a platform side thread context to get around this which would
// probably mean thread local storage would have to get involved.
global HWND win32_current_gl_window = 0;
internal b32
win32_gl_create_window(HWND *wnd_out, HGLRC *context_out, DWORD style, RECT rect){
HINSTANCE this_instance = GetModuleHandle(0);
local_persist b32 srgb_support = false;
local_persist b32 register_success = true;
local_persist b32 first_call = true;
if (first_call){
first_call = false;
// NOTE(allen): Create the GL bootstrap window
WNDCLASSW wglclass = {};
wglclass.lpfnWndProc = DefWindowProcW;
wglclass.hInstance = this_instance;
wglclass.lpszClassName = L"wgl-loader";
if (RegisterClassW(&wglclass) == 0){
register_success = false;
goto fail_register;
}
HWND wglwindow = CreateWindowW(wglclass.lpszClassName, L"", 0, 0, 0, 0, 0,
0, 0, this_instance, 0);
if (wglwindow == 0){
register_success = false;
goto fail_register;
}
// NOTE(allen): Create the GL bootstrap context
HDC wgldc = GetDC(wglwindow);
PIXELFORMATDESCRIPTOR format = {};
format.nSize = sizeof(format);
format.nVersion = 1;
format.dwFlags = PFD_SUPPORT_OPENGL | PFD_DRAW_TO_WINDOW | PFD_DOUBLEBUFFER;
format.iPixelType = PFD_TYPE_RGBA;
format.cColorBits = 32;
format.cAlphaBits = 8;
format.cDepthBits = 24;
format.iLayerType = PFD_MAIN_PLANE;
i32 suggested_format_index = ChoosePixelFormat(wgldc, &format);
if (!SetPixelFormat(wgldc, suggested_format_index, &format)){
register_success = false;
goto fail_register;
}
HGLRC wglcontext = wglCreateContext(wgldc);
if (wglcontext == 0){
register_success = false;
goto fail_register;
}
if (!wglMakeCurrent(wgldc, wglcontext)){
register_success = false;
goto fail_register;
}
// NOTE(allen): Load wgl extensions
#define LoadWGL(f,l) Stmnt((f) = (f##_Function*)wglGetProcAddress(#f); \
(l) = (l) && win32_wgl_good((Void_Func*)(f));)
b32 load_success = true;
LoadWGL(wglCreateContextAttribsARB, load_success);
LoadWGL(wglChoosePixelFormatARB, load_success);
LoadWGL(wglGetExtensionsStringEXT, load_success);
if (!load_success){
register_success = false;
goto fail_register;
}
char *extensions_c = wglGetExtensionsStringEXT();
String_Const_u8 extensions = SCu8((u8*)extensions_c);
{
String_Const_u8 s = string_skip_whitespace(extensions);
for (;s.size > 0;){
umem end = string_find_first_whitespace(s);
String_Const_u8 m = string_prefix(s, end);
if (string_match(m, string_u8_litexpr("WGL_EXT_framebuffer_sRGB")) ||
string_match(m, string_u8_litexpr("WGL_ARB_framebuffer_sRGB"))){
srgb_support = true;
}
else if (string_match(m, string_u8_litexpr("WGL_EXT_swap_interval"))){
b32 wgl_swap_interval_ext = true;
LoadWGL(wglSwapIntervalEXT, wgl_swap_interval_ext);
if (!wgl_swap_interval_ext){
wglSwapIntervalEXT = 0;
}
}
s = string_skip_whitespace(string_skip(s, end));
}
}
// NOTE(allen): Load gl functions
#define GL_FUNC(f,R,P) LoadWGL(f,load_success);
#include "opengl/4ed_opengl_funcs.h"
if (!load_success){
register_success = false;
goto fail_register;
}
// NOTE(allen): Cleanup the GL bootstrap resources
ReleaseDC(wglwindow, wgldc);
DestroyWindow(wglwindow);
wglDeleteContext(wglcontext);
// NOTE(allen): Register the graphics window class
WNDCLASSW wndclass = {};
wndclass.style = CS_HREDRAW|CS_VREDRAW|CS_DBLCLKS;
wndclass.lpfnWndProc = win32_proc;
wndclass.hInstance = this_instance;
wndclass.lpszClassName = L"GRAPHICS-WINDOW-NAME";
if (RegisterClassW(&wndclass) == 0){
register_success = false;
goto fail_register;
}
}
fail_register:;
b32 result = false;
if (register_success){
// NOTE(allen): Create the graphics window
HWND wnd = CreateWindowExW(0, L"GRAPHICS-WINDOW-NAME", L"GRAPHICS", style,
CW_USEDEFAULT, CW_USEDEFAULT, rect.right - rect.left, rect.bottom - rect.top,
0, 0, this_instance, 0);
*wnd_out = 0;
*context_out = 0;
if (wnd != 0){
HDC dc = GetDC(wnd);
PIXELFORMATDESCRIPTOR format = {};
i32 pixel_attrib_list[] = {
/* 0*/WGL_DRAW_TO_WINDOW_ARB, TRUE,
/* 2*/WGL_ACCELERATION_ARB, WGL_FULL_ACCELERATION_ARB,
/* 4*/WGL_SUPPORT_OPENGL_ARB, TRUE,
/* 6*/WGL_DOUBLE_BUFFER_ARB, false,
/* 8*/WGL_PIXEL_TYPE_ARB, WGL_TYPE_RGBA_ARB,
/*10*/WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB, GL_TRUE,
/*12*/0,
};
if (!srgb_support){
pixel_attrib_list[10] = 0;
}
i32 suggested_format_index = 0;
u32 ignore = 0;
if (!wglChoosePixelFormatARB(dc, pixel_attrib_list, 0, 1, &suggested_format_index, &ignore)){
goto fail_window_init;
}
DescribePixelFormat(dc, suggested_format_index, sizeof(format), &format);
if (!SetPixelFormat(dc, suggested_format_index, &format)){
goto fail_window_init;
}
#if 1
i32 context_attrib_list[] = {
/*0*/WGL_CONTEXT_MAJOR_VERSION_ARB, 3,
/*2*/WGL_CONTEXT_MINOR_VERSION_ARB, 2,
/*4*/WGL_CONTEXT_FLAGS_ARB, WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB
#if GL_DEBUG_MODE
|WGL_CONTEXT_DEBUG_BIT_ARB
#endif
,
/*6*/WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
/*8*/0
};
#else
i32 context_attrib_list[] = {
WGL_CONTEXT_MAJOR_VERSION_ARB, 2,
WGL_CONTEXT_MINOR_VERSION_ARB, 1,
WGL_CONTEXT_FLAGS_ARB, 0,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
0
};
#endif
HGLRC context = wglCreateContextAttribsARB(dc, 0, context_attrib_list);
if (context == 0){
goto fail_window_init;
}
wglMakeCurrent(dc, context);
win32_current_gl_window = wnd;
if (wglSwapIntervalEXT != 0){
wglSwapIntervalEXT(1);
}
*wnd_out = wnd;
*context_out = context;
result = true;
if (false){
fail_window_init:;
DWORD error = GetLastError();
ReleaseDC(wnd, dc);
DestroyWindow(wnd);
SetLastError(error);
}
}
}
return(result);
}
////////////////////////////////
#include "4ed_link_system_functions.cpp"
#include "4ed_shared_init_logic.cpp"
int CALL_CONVENTION
WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow){
i32 argc = __argc;
char **argv = __argv;
//
// System Linkage
//
sysfunc.font_make_face = ft__font_make_face;
sysfunc.get_texture = gl__get_texture;
sysfunc.fill_texture = gl__fill_texture;
link_system_code();
//
// Memory init
//
memset(&win32vars, 0, sizeof(win32vars));
memset(&target, 0, sizeof(target));
memset(&memory_vars, 0, sizeof(memory_vars));
memset(&plat_settings, 0, sizeof(plat_settings));
win32vars.arena = make_arena_system(&sysfunc);
memset(&libraries, 0, sizeof(libraries));
memset(&app, 0, sizeof(app));
memset(&custom_api, 0, sizeof(custom_api));
memory_init(&win32vars.arena);
win32vars.cursor_show = MouseCursorShow_Always;
win32vars.prev_cursor_show = MouseCursorShow_Always;
dll_init_sentinel(&win32vars.free_win32_objects);
dll_init_sentinel(&win32vars.timer_objects);
InitializeCriticalSection(&win32vars.thread_launch_mutex);
InitializeConditionVariable(&win32vars.thread_launch_cv);
//
// HACK(allen):
// Previously zipped stuff is here, it should be zipped in the new pattern now.
//
init_shared_vars();
load_app_code(&win32vars.arena);
win32vars.log_string = app.get_logger(&sysfunc);
read_command_line(&win32vars.arena, argc, argv);
//
// Load Custom Code
//
#if defined(FRED_SUPER)
load_custom_code(&win32vars.arena);
#else
custom_api.get_bindings = get_bindings;
#endif
//
// Window and GL Initialization
//
RECT window_rect = {};
if (plat_settings.set_window_size){
window_rect.right = plat_settings.window_w;
window_rect.bottom = plat_settings.window_h;
}
else{
window_rect.right = 800;
window_rect.bottom = 600;
}
if (!AdjustWindowRect(&window_rect, WS_OVERLAPPEDWINDOW, false)){
//LOG("Could not get adjusted window.\n");
}
i32 window_style = WS_OVERLAPPEDWINDOW;
if (!plat_settings.fullscreen_window && plat_settings.maximize_window){
window_style |= WS_MAXIMIZE;
}
HGLRC window_opengl_context = 0;
if (!win32_gl_create_window(&win32vars.window_handle, &window_opengl_context, window_style, window_rect)){
exit(1);
}
GetClientRect(win32vars.window_handle, &window_rect);
win32_resize(window_rect.right - window_rect.left, window_rect.bottom - window_rect.top);
//
// Misc System Initializations
//
if (!AddClipboardFormatListener(win32vars.window_handle)){
win32_output_error_string(&win32vars.arena, ErrorString_UseLog);
}
win32vars.clip_max = KB(16);
win32vars.clip_buffer = (u8*)system_memory_allocate(win32vars.clip_max);
win32vars.clipboard_sequence = GetClipboardSequenceNumber();
if (win32vars.clipboard_sequence == 0){
win32_post_clipboard(&win32vars.arena, "", 0);
win32vars.clipboard_sequence = GetClipboardSequenceNumber();
win32vars.next_clipboard_is_self = 0;
if (win32vars.clipboard_sequence == 0){
OutputDebugStringA("Failure while initializing clipboard\n");
}
}
else{
win32_read_clipboard_contents(&win32vars.arena);
}
win32_keycode_init();
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 = (f32)f.QuadPart / 1000000.f;
}
else{
// NOTE(allen): Just guess.
win32vars.count_per_usecond = 1.f;
}
Assert(win32vars.count_per_usecond > 0.f);
//
// App init
//
{
Temp_Memory temp = begin_temp(&win32vars.arena);
String_Const_u8 curdir = sysfunc.get_current_path(&win32vars.arena);
curdir = string_mod_replace_character(curdir, '\\', '/');
app.init(&sysfunc, &target, &memory_vars, win32vars.clipboard_contents, curdir, custom_api);
end_temp(temp);
}
//
// Main loop
//
b32 keep_running = true;
win32vars.first = true;
timeBeginPeriod(1);
if (plat_settings.fullscreen_window){
win32_toggle_fullscreen();
}
SetForegroundWindow(win32vars.window_handle);
SetActiveWindow(win32vars.window_handle);
ShowWindow(win32vars.window_handle, SW_SHOW);
//LOG("Beginning main loop\n");
u64 timer_start = system_now_time();
MSG msg;
for (;keep_running;){
// TODO(allen): Find a good way to wait on a pipe
// without interfering with the reading process.
// NOTE(allen): Looks like we can ReadFile with a
// size of zero in an IOCP for this effect.
if (!win32vars.first){
if (win32vars.running_cli == 0){
win32vars.got_useful_event = false;
}
b32 get_more_messages = true;
do{
if (win32vars.got_useful_event == 0){
get_more_messages = GetMessage(&msg, 0, 0, 0);
}
else{
get_more_messages = PeekMessage(&msg, 0, 0, 0, 1);
}
if (get_more_messages){
if (msg.message == WM_QUIT){
keep_running = false;
}else{
b32 treat_normally = true;
if (msg.message == WM_KEYDOWN || msg.message == WM_SYSKEYDOWN){
switch (msg.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:break;
default: treat_normally = false; break;
}
}
if (treat_normally){
TranslateMessage(&msg);
DispatchMessage(&msg);
}
else{
Control_Keys *controls = &win32vars.input_chunk.pers.controls;
b8 ctrl = (controls->r_ctrl || (controls->l_ctrl && !controls->r_alt));
b8 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;
}
}
BYTE ctrl_state = 0, alt_state = 0;
BYTE state[256];
if (ctrl || alt){
GetKeyboardState(state);
if (ctrl){
ctrl_state = state[VK_CONTROL];
state[VK_CONTROL] = 0;
}
if (alt){
alt_state = state[VK_MENU];
state[VK_MENU] = 0;
}
SetKeyboardState(state);
TranslateMessage(&msg);
DispatchMessage(&msg);
if (ctrl){
state[VK_CONTROL] = ctrl_state;
}
if (alt){
state[VK_MENU] = alt_state;
}
SetKeyboardState(state);
}
else{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
}
}
}while (get_more_messages);
}
// NOTE(allen): Mouse Out of Window Detection
POINT mouse_point;
if (GetCursorPos(&mouse_point) &&
ScreenToClient(win32vars.window_handle, &mouse_point)){
i32_Rect screen;
screen.x0 = 0;
screen.y0 = 0;
screen.x1 = target.width;
screen.y1 = target.height;
i32 mx = mouse_point.x;
i32 my = mouse_point.y;
b32 is_hit = false;
if (mx >= screen.x0 && mx < screen.x1 && my >= screen.y0 && my < screen.y1){
is_hit = true;
}
if (!is_hit){
win32vars.input_chunk.trans.out_of_window = true;
}
win32vars.input_chunk.pers.mouse = V2i32(mouse_point.x, mouse_point.y);
}
else{
win32vars.input_chunk.trans.out_of_window = true;
}
// NOTE(allen): Prepare the Frame Input
// TODO(allen): CROSS REFERENCE WITH LINUX SPECIAL CODE "TIC898989"
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;
Application_Step_Input input = {};
input.first_step = win32vars.first;
input.dt = frame_useconds/1000000.f;
input.keys = input_chunk.trans.key_data;
memcpy(input.keys.modifiers, input_chunk.pers.control_keys, sizeof(input.keys.modifiers));
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.p = input_chunk.pers.mouse;
input.trying_to_kill = input_chunk.trans.trying_to_kill;
// TODO(allen): Not really appropriate to round trip this all the way to the OS layer, redo this system.
// NOTE(allen): Ask the Core About Exiting if We Have an Exit Signal
if (win32vars.send_exit_signal){
input.trying_to_kill = true;
win32vars.send_exit_signal = false;
}
// NOTE(allen): Frame Clipboard Input
block_zero_struct(&win32vars.clipboard_contents);
input.clipboard_changed = false;
if (win32vars.clipboard_sequence != 0){
DWORD new_number = GetClipboardSequenceNumber();
if (new_number != win32vars.clipboard_sequence){
if (win32vars.next_clipboard_is_self){
win32vars.next_clipboard_is_self = false;
}
else{
for (i32 R = 0; R < 4; ++R){
if (win32_read_clipboard_contents(&win32vars.arena)){
input.clipboard_changed = true;
break;
}
}
}
win32vars.clipboard_sequence = new_number;
}
}
input.clipboard = win32vars.clipboard_contents;
win32vars.clip_post.size = 0;
// NOTE(allen): Application Core Update
Application_Step_Result result = {};
if (app.step != 0){
result = app.step(&sysfunc, &target, &memory_vars, &input);
}
else{
//LOG("app.step == 0 -- skipping\n");
}
// NOTE(allen): Finish the Loop
if (result.perform_kill){
keep_running = false;
}
// NOTE(allen): Post New Clipboard Content
if (win32vars.clip_post.size > 0){
win32_post_clipboard(&win32vars.arena, (char*)win32vars.clip_post.str, (i32)win32vars.clip_post.size);
}
// NOTE(allen): Switch to New Title
if (result.has_new_title){
SetWindowText_utf8(&win32vars.arena, win32vars.window_handle, (u8*)result.title_string);
}
// NOTE(allen): Switch to New Cursor
Win32SetCursorFromUpdate(result.mouse_cursor_type);
if (win32vars.cursor_show != win32vars.prev_cursor_show){
win32vars.prev_cursor_show = win32vars.cursor_show;
switch (win32vars.cursor_show){
case MouseCursorShow_Never:
{
i32 counter = 0;
do{
counter = ShowCursor(false);
}while(counter >= 0);
}break;
case MouseCursorShow_Always:
{
i32 counter = 0;
do{
counter = ShowCursor(true);
}while(counter <= 0);
}break;
// TODO(allen): MouseCursorShow_HideWhenStill
}
}
// NOTE(allen): update lctrl_lalt_is_altgr status
win32vars.lctrl_lalt_is_altgr = (b8)result.lctrl_lalt_is_altgr;
// NOTE(allen): render
HDC hdc = GetDC(win32vars.window_handle);
gl_render(&target, &shared_vars.pixel_scratch);
SwapBuffers(hdc);
ReleaseDC(win32vars.window_handle, hdc);
// NOTE(allen): toggle full screen
if (win32vars.do_toggle){
win32_toggle_fullscreen();
win32vars.do_toggle = false;
}
// NOTE(allen): schedule another step if needed
if (result.animating){
system_schedule_step(0);
}
// NOTE(allen): sleep a bit to cool off :)
u64 timer_end = system_now_time();
u64 end_target = timer_start + frame_useconds;
for (;timer_end < end_target;){
DWORD samount = (DWORD)((end_target - timer_end)/1000);
if (samount > 0){
Sleep(samount);
}
timer_end = system_now_time();
}
timer_start = system_now_time();
win32vars.first = false;
}
return(0);
}
#include "win32_utf8.cpp"
#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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