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RetroArch/gfx/context/wgl_ctx.c
twinaphex 8cbeeab39f Create unique names for context driver static functions - needed 
for Griffin builds
2014-10-08 18:09:01 +02:00

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16 KiB
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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2014 - Daniel De Matteis
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
// Win32/WGL context.
// necessary for mingw32 multimon defines:
#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x0500 //_WIN32_WINNT_WIN2K
#endif
#include "../../driver.h"
#include "../gfx_context.h"
#include "../gl_common.h"
#include "../gfx_common.h"
#include "win32_common.h"
#include <windows.h>
#include <commdlg.h>
#include <string.h>
#define IDI_ICON 1
#define MAX_MONITORS 9
static bool g_use_hw_ctx;
static HWND g_hwnd;
static HGLRC g_hrc;
static HGLRC g_hw_hrc;
static HDC g_hdc;
static HMONITOR g_last_hm;
static HMONITOR g_all_hms[MAX_MONITORS];
static unsigned g_num_mons;
static unsigned g_major;
static unsigned g_minor;
static bool g_quit;
static bool g_inited;
static unsigned g_interval;
static unsigned g_resize_width;
static unsigned g_resize_height;
static unsigned g_pos_x = CW_USEDEFAULT;
static unsigned g_pos_y = CW_USEDEFAULT;
static bool g_resized;
static bool g_restore_desktop;
static void monitor_info(MONITORINFOEX *mon, HMONITOR *hm_to_use);
static void gfx_ctx_wgl_destroy(void *data);
static BOOL (APIENTRY *p_swap_interval)(int);
typedef HGLRC (APIENTRY *wglCreateContextAttribsProc)(HDC, HGLRC, const int*);
static wglCreateContextAttribsProc pcreate_context;
static void setup_pixel_format(HDC hdc)
{
PIXELFORMATDESCRIPTOR pfd = {0};
pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = 32;
pfd.cDepthBits = 0;
pfd.cStencilBits = 0;
pfd.iLayerType = PFD_MAIN_PLANE;
SetPixelFormat(hdc, ChoosePixelFormat(hdc, &pfd), &pfd);
}
#ifndef WGL_CONTEXT_MAJOR_VERSION_ARB
#define WGL_CONTEXT_MAJOR_VERSION_ARB 0x2091
#endif
#ifndef WGL_CONTEXT_MINOR_VERSION_ARB
#define WGL_CONTEXT_MINOR_VERSION_ARB 0x2092
#endif
#ifndef WGL_CONTEXT_PROFILE_MASK_ARB
#define WGL_CONTEXT_PROFILE_MASK_ARB 0x9126
#endif
#ifndef WGL_CONTEXT_CORE_PROFILE_BIT_ARB
#define WGL_CONTEXT_CORE_PROFILE_BIT_ARB 0x0001
#endif
#ifndef WGL_CONTEXT_FLAGS_ARB
#define WGL_CONTEXT_FLAGS_ARB 0x2094
#endif
#ifndef WGL_CONTEXT_DEBUG_BIT_ARB
#define WGL_CONTEXT_DEBUG_BIT_ARB 0x0001
#endif
static void create_gl_context(HWND hwnd)
{
g_hdc = GetDC(hwnd);
setup_pixel_format(g_hdc);
#ifdef GL_DEBUG
bool debug = true;
#else
bool debug = g_extern.system.hw_render_callback.debug_context;
#endif
bool core_context = (g_major * 1000 + g_minor) >= 3001;
if (!g_hrc)
{
g_hrc = wglCreateContext(g_hdc);
if (g_hrc && !core_context && !debug) // We'll create shared context later if not.
{
g_hw_hrc = wglCreateContext(g_hdc);
if (g_hw_hrc)
{
if (!wglShareLists(g_hrc, g_hw_hrc))
{
RARCH_LOG("[WGL]: Failed to share contexts.\n");
g_quit = true;
}
}
else
g_quit = true;
}
}
else
{
RARCH_LOG("[WGL]: Using cached GL context.\n");
driver.video_cache_context_ack = true;
}
if (g_hrc)
{
if (wglMakeCurrent(g_hdc, g_hrc))
g_inited = true;
else
g_quit = true;
}
else
{
g_quit = true;
return;
}
if (core_context || debug)
{
int attribs[16];
int *aptr = attribs;
if (core_context)
{
*aptr++ = WGL_CONTEXT_MAJOR_VERSION_ARB;
*aptr++ = g_major;
*aptr++ = WGL_CONTEXT_MINOR_VERSION_ARB;
*aptr++ = g_minor;
// Technically, we don't have core/compat until 3.2.
// Version 3.1 is either compat or not depending on GL_ARB_compatibility.
if ((g_major * 1000 + g_minor) >= 3002)
{
*aptr++ = WGL_CONTEXT_PROFILE_MASK_ARB;
*aptr++ = WGL_CONTEXT_CORE_PROFILE_BIT_ARB;
}
}
if (debug)
{
*aptr++ = WGL_CONTEXT_FLAGS_ARB;
*aptr++ = WGL_CONTEXT_DEBUG_BIT_ARB;
}
*aptr = 0;
if (!pcreate_context)
pcreate_context = (wglCreateContextAttribsProc)wglGetProcAddress("wglCreateContextAttribsARB");
if (pcreate_context)
{
HGLRC context = pcreate_context(g_hdc, NULL, attribs);
if (context)
{
wglMakeCurrent(NULL, NULL);
wglDeleteContext(g_hrc);
g_hrc = context;
if (!wglMakeCurrent(g_hdc, g_hrc))
g_quit = true;
}
else
RARCH_ERR("[WGL]: Failed to create core context. Falling back to legacy context.\n");
if (g_use_hw_ctx)
{
g_hw_hrc = pcreate_context(g_hdc, context, attribs);
if (!g_hw_hrc)
{
RARCH_ERR("[WGL]: Failed to create shared context.\n");
g_quit = true;
}
}
}
else
RARCH_ERR("[WGL]: wglCreateContextAttribsARB not supported.\n");
}
}
#ifdef __cplusplus
extern "C"
#endif
bool dinput_handle_message(void *dinput, UINT message, WPARAM wParam, LPARAM lParam);
static void *dinput_wgl;
static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
WPARAM wparam, LPARAM lparam)
{
switch (message)
{
case WM_SYSCOMMAND:
// Prevent screensavers, etc, while running.
switch (wparam)
{
case SC_SCREENSAVE:
case SC_MONITORPOWER:
return 0;
}
break;
case WM_CHAR:
case WM_KEYDOWN:
case WM_KEYUP:
case WM_SYSKEYUP:
case WM_SYSKEYDOWN:
return win32_handle_keyboard_event(hwnd, message, wparam, lparam);
case WM_CREATE:
create_gl_context(hwnd);
return 0;
case WM_CLOSE:
case WM_DESTROY:
case WM_QUIT:
{
WINDOWPLACEMENT placement;
GetWindowPlacement(g_hwnd, &placement);
g_pos_x = placement.rcNormalPosition.left;
g_pos_y = placement.rcNormalPosition.top;
g_quit = true;
return 0;
}
case WM_SIZE:
// Do not send resize message if we minimize.
if (wparam != SIZE_MAXHIDE && wparam != SIZE_MINIMIZED)
{
g_resize_width = LOWORD(lparam);
g_resize_height = HIWORD(lparam);
g_resized = true;
}
return 0;
}
if (dinput_handle_message(dinput_wgl, message, wparam, lparam))
return 0;
return DefWindowProc(hwnd, message, wparam, lparam);
}
static void gfx_ctx_wgl_swap_interval(void *data, unsigned interval)
{
(void)data;
g_interval = interval;
if (g_hrc && p_swap_interval)
{
RARCH_LOG("[WGL]: wglSwapInterval(%u)\n", g_interval);
if (!p_swap_interval(g_interval))
RARCH_WARN("[WGL]: wglSwapInterval() failed.\n");
}
}
static void gfx_ctx_wgl_check_window(void *data, bool *quit,
bool *resize, unsigned *width, unsigned *height, unsigned frame_count)
{
(void)data;
(void)frame_count;
MSG msg;
while (PeekMessage(&msg, g_hwnd, 0, 0, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
*quit = g_quit;
if (g_resized)
{
*resize = true;
*width = g_resize_width;
*height = g_resize_height;
g_resized = false;
}
}
static void gfx_ctx_wgl_swap_buffers(void *data)
{
(void)data;
SwapBuffers(g_hdc);
}
static void gfx_ctx_wgl_set_resize(void *data,
unsigned width, unsigned height)
{
(void)data;
(void)width;
(void)height;
}
static void gfx_ctx_wgl_update_window_title(void *data)
{
(void)data;
char buf[128], buf_fps[128];
bool fps_draw = g_settings.fps_show;
if (gfx_get_fps(buf, sizeof(buf), fps_draw ? buf_fps : NULL, sizeof(buf_fps)))
SetWindowText(g_hwnd, buf);
if (fps_draw)
msg_queue_push(g_extern.msg_queue, buf_fps, 1, 1);
}
static void gfx_ctx_wgl_get_video_size(void *data, unsigned *width, unsigned *height)
{
(void)data;
if (!g_hwnd)
{
HMONITOR hm_to_use = NULL;
MONITORINFOEX current_mon;
monitor_info(&current_mon, &hm_to_use);
RECT mon_rect = current_mon.rcMonitor;
*width = mon_rect.right - mon_rect.left;
*height = mon_rect.bottom - mon_rect.top;
}
else
{
*width = g_resize_width;
*height = g_resize_height;
}
}
static BOOL CALLBACK monitor_enum_proc(HMONITOR hMonitor, HDC hdcMonitor, LPRECT lprcMonitor, LPARAM dwData)
{
g_all_hms[g_num_mons++] = hMonitor;
return TRUE;
}
static bool gfx_ctx_wgl_init(void *data)
{
(void)data;
if (g_inited)
return false;
g_quit = false;
g_restore_desktop = false;
g_num_mons = 0;
EnumDisplayMonitors(NULL, NULL, monitor_enum_proc, 0);
WNDCLASSEX wndclass = {0};
wndclass.cbSize = sizeof(wndclass);
wndclass.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
wndclass.lpfnWndProc = WndProc;
wndclass.hInstance = GetModuleHandle(NULL);
wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
wndclass.lpszClassName = "RetroArch";
wndclass.hIcon = LoadIcon(GetModuleHandle(NULL), MAKEINTRESOURCE(IDI_ICON));
wndclass.hIconSm = (HICON)LoadImage(GetModuleHandle(NULL), MAKEINTRESOURCE(IDI_ICON), IMAGE_ICON, 16, 16, 0);
if (!RegisterClassEx(&wndclass))
return false;
return true;
}
static bool set_fullscreen(unsigned width, unsigned height, char *dev_name)
{
DEVMODE devmode;
memset(&devmode, 0, sizeof(devmode));
devmode.dmSize = sizeof(DEVMODE);
devmode.dmPelsWidth = width;
devmode.dmPelsHeight = height;
devmode.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT;
RARCH_LOG("[WGL]: Setting fullscreen to %ux%u on device %s.\n", width, height, dev_name);
return ChangeDisplaySettingsEx(dev_name, &devmode, NULL, CDS_FULLSCREEN, NULL) == DISP_CHANGE_SUCCESSFUL;
}
static void show_cursor(bool show)
{
if (show)
while (ShowCursor(TRUE) < 0);
else
while (ShowCursor(FALSE) >= 0);
}
static void monitor_info(MONITORINFOEX *mon, HMONITOR *hm_to_use)
{
if (!g_last_hm)
g_last_hm = MonitorFromWindow(GetDesktopWindow(), MONITOR_DEFAULTTONEAREST);
*hm_to_use = g_last_hm;
unsigned fs_monitor = g_settings.video.monitor_index;
if (fs_monitor && fs_monitor <= g_num_mons && g_all_hms[fs_monitor - 1])
*hm_to_use = g_all_hms[fs_monitor - 1];
memset(mon, 0, sizeof(*mon));
mon->cbSize = sizeof(MONITORINFOEX);
GetMonitorInfo(*hm_to_use, (MONITORINFO*)mon);
}
static bool gfx_ctx_wgl_set_video_mode(void *data,
unsigned width, unsigned height,
bool fullscreen)
{
DWORD style;
RECT rect = {0};
HMONITOR hm_to_use = NULL;
MONITORINFOEX current_mon;
monitor_info(&current_mon, &hm_to_use);
RECT mon_rect = current_mon.rcMonitor;
g_resize_width = width;
g_resize_height = height;
bool windowed_full = g_settings.video.windowed_fullscreen;
if (fullscreen)
{
if (windowed_full)
{
style = WS_EX_TOPMOST | WS_POPUP;
g_resize_width = width = mon_rect.right - mon_rect.left;
g_resize_height = height = mon_rect.bottom - mon_rect.top;
}
else
{
style = WS_POPUP | WS_VISIBLE;
if (!set_fullscreen(width, height, current_mon.szDevice))
goto error;
// display settings might have changed, get new coordinates
GetMonitorInfo(hm_to_use, (MONITORINFO*)&current_mon);
mon_rect = current_mon.rcMonitor;
g_restore_desktop = true;
}
}
else
{
style = WS_OVERLAPPEDWINDOW | WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
rect.right = width;
rect.bottom = height;
AdjustWindowRect(&rect, style, FALSE);
width = rect.right - rect.left;
height = rect.bottom - rect.top;
}
g_hwnd = CreateWindowEx(0, "RetroArch", "RetroArch", style,
fullscreen ? mon_rect.left : g_pos_x,
fullscreen ? mon_rect.top : g_pos_y,
width, height,
NULL, NULL, NULL, NULL);
if (!g_hwnd)
goto error;
if (!fullscreen || windowed_full)
{
ShowWindow(g_hwnd, SW_RESTORE);
UpdateWindow(g_hwnd);
SetForegroundWindow(g_hwnd);
SetFocus(g_hwnd);
}
show_cursor(!fullscreen);
// Wait until GL context is created (or failed to do so ...)
MSG msg;
while (!g_inited && !g_quit && GetMessage(&msg, g_hwnd, 0, 0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
if (g_quit)
goto error;
p_swap_interval = (BOOL (APIENTRY *)(int))wglGetProcAddress("wglSwapIntervalEXT");
gfx_ctx_wgl_swap_interval(data, g_interval);
driver.display_type = RARCH_DISPLAY_WIN32;
driver.video_display = 0;
driver.video_window = (uintptr_t)g_hwnd;
return true;
error:
gfx_ctx_wgl_destroy(data);
return false;
}
static void gfx_ctx_wgl_destroy(void *data)
{
(void)data;
if (g_hrc)
{
glFinish();
wglMakeCurrent(NULL, NULL);
if (!driver.video_cache_context)
{
if (g_hw_hrc)
wglDeleteContext(g_hw_hrc);
wglDeleteContext(g_hrc);
g_hrc = NULL;
g_hw_hrc = NULL;
}
}
if (g_hwnd && g_hdc)
{
ReleaseDC(g_hwnd, g_hdc);
g_hdc = NULL;
}
if (g_hwnd)
{
g_last_hm = MonitorFromWindow(g_hwnd, MONITOR_DEFAULTTONEAREST);
DestroyWindow(g_hwnd);
UnregisterClass("RetroArch", GetModuleHandle(NULL));
g_hwnd = NULL;
}
if (g_restore_desktop)
{
MONITORINFOEX current_mon;
memset(&current_mon, 0, sizeof(current_mon));
current_mon.cbSize = sizeof(MONITORINFOEX);
GetMonitorInfo(g_last_hm, (MONITORINFO*)&current_mon);
ChangeDisplaySettingsEx(current_mon.szDevice, NULL, NULL, 0, NULL);
g_restore_desktop = false;
}
g_inited = false;
g_major = g_minor = 0;
p_swap_interval = NULL;
}
static void gfx_ctx_wgl_input_driver(void *data,
const input_driver_t **input, void **input_data)
{
(void)data;
dinput_wgl = input_dinput.init();
*input = dinput_wgl ? &input_dinput : NULL;
*input_data = dinput_wgl;
}
static bool gfx_ctx_wgl_has_focus(void *data)
{
(void)data;
if (!g_inited)
return false;
return GetFocus() == g_hwnd;
}
static bool gfx_ctx_wgl_has_windowed(void *data)
{
(void)data;
return true;
}
static gfx_ctx_proc_t gfx_ctx_wgl_get_proc_address(const char *symbol)
{
return (gfx_ctx_proc_t)wglGetProcAddress(symbol);
}
static bool gfx_ctx_wgl_bind_api(void *data,
enum gfx_ctx_api api, unsigned major, unsigned minor)
{
(void)data;
g_major = major;
g_minor = minor;
return api == GFX_CTX_OPENGL_API;
}
static void gfx_ctx_wgl_show_mouse(void *data, bool state)
{
(void)data;
show_cursor(state);
}
static void gfx_ctx_wgl_bind_hw_render(void *data, bool enable)
{
g_use_hw_ctx = enable;
if (g_hdc)
wglMakeCurrent(g_hdc, enable ? g_hw_hrc : g_hrc);
}
const gfx_ctx_driver_t gfx_ctx_wgl = {
gfx_ctx_wgl_init,
gfx_ctx_wgl_destroy,
gfx_ctx_wgl_bind_api,
gfx_ctx_wgl_swap_interval,
gfx_ctx_wgl_set_video_mode,
gfx_ctx_wgl_get_video_size,
NULL,
gfx_ctx_wgl_update_window_title,
gfx_ctx_wgl_check_window,
gfx_ctx_wgl_set_resize,
gfx_ctx_wgl_has_focus,
gfx_ctx_wgl_has_windowed,
gfx_ctx_wgl_swap_buffers,
gfx_ctx_wgl_input_driver,
gfx_ctx_wgl_get_proc_address,
gfx_ctx_wgl_show_mouse,
"wgl",
gfx_ctx_wgl_bind_hw_render,
};
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