mirror of
https://github.com/CTCaer/RetroArch.git
synced 2025-01-07 19:01:14 +00:00
375 lines
8.4 KiB
C
375 lines
8.4 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2012 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2012 - Daniel De Matteis
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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// Win32/WGL context.
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#include "../../driver.h"
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#include "../gfx_context.h"
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#include "../gl_common.h"
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#include "../gfx_common.h"
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#include <windows.h>
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static HWND g_hwnd;
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static HGLRC g_hrc;
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static HDC g_hdc;
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static bool g_quit;
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static bool g_inited;
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static unsigned g_interval;
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static unsigned g_resize_width;
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static unsigned g_resize_height;
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static bool g_resized;
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static bool g_restore_desktop;
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static void gfx_ctx_get_video_size(unsigned *width, unsigned *height);
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static void gfx_ctx_destroy(void);
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static BOOL (APIENTRY *p_swap_interval)(int);
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static void setup_pixel_format(HDC hdc)
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{
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PIXELFORMATDESCRIPTOR pfd = {0};
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pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
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pfd.nVersion = 1;
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pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
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pfd.iPixelType = PFD_TYPE_RGBA;
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pfd.cColorBits = 32;
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pfd.cDepthBits = 0;
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pfd.cStencilBits = 0;
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pfd.iLayerType = PFD_MAIN_PLANE;
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SetPixelFormat(hdc, ChoosePixelFormat(hdc, &pfd), &pfd);
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}
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static void create_gl_context(HWND hwnd)
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{
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g_hdc = GetDC(hwnd);
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setup_pixel_format(g_hdc);
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g_hrc = wglCreateContext(g_hdc);
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if (g_hrc)
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{
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if (wglMakeCurrent(g_hdc, g_hrc))
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g_inited = true;
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else
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g_quit = true;
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}
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else
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g_quit = true;
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}
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static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
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WPARAM wparam, LPARAM lparam)
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{
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switch (message)
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{
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case WM_SYSCOMMAND:
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// Prevent screensavers, etc, while running.
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switch (wparam)
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{
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case SC_SCREENSAVE:
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case SC_MONITORPOWER:
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return 0;
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}
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break;
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case WM_CREATE:
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create_gl_context(hwnd);
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return 0;
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case WM_CLOSE:
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case WM_DESTROY:
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case WM_QUIT:
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g_quit = true;
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return 0;
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case WM_SIZE:
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// Do not send resize message if we minimize.
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if (wparam != SIZE_MAXHIDE && wparam != SIZE_MINIMIZED)
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{
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g_resize_width = LOWORD(lparam);
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g_resize_height = HIWORD(lparam);
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g_resized = true;
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}
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return 0;
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}
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return DefWindowProc(hwnd, message, wparam, lparam);
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}
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static void gfx_ctx_swap_interval(unsigned interval)
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{
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g_interval = interval;
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if (g_hrc && p_swap_interval)
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{
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RARCH_LOG("[WGL]: wglSwapInterval(%u)\n", g_interval);
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if (!p_swap_interval(g_interval))
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RARCH_WARN("[WGL]: wglSwapInterval() failed.\n");
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}
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}
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static void gfx_ctx_check_window(bool *quit,
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bool *resize, unsigned *width, unsigned *height, unsigned frame_count)
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{
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(void)frame_count;
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MSG msg;
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while (PeekMessage(&msg, g_hwnd, 0, 0, PM_REMOVE))
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{
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TranslateMessage(&msg);
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DispatchMessage(&msg);
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}
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*quit = g_quit;
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if (g_resized)
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{
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*resize = true;
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*width = g_resize_width;
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*height = g_resize_height;
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g_resized = false;
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}
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}
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static void gfx_ctx_swap_buffers(void)
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{
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SwapBuffers(g_hdc);
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}
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static void gfx_ctx_set_resize(unsigned width, unsigned height)
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{
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(void)width;
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(void)height;
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}
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static void gfx_ctx_update_window_title(bool reset)
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{
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if (reset)
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gfx_window_title_reset();
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char buf[128];
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if (gfx_window_title(buf, sizeof(buf)))
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SetWindowText(g_hwnd, buf);
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}
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static void gfx_ctx_get_video_size(unsigned *width, unsigned *height)
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{
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if (!g_hwnd)
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{
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RECT screen_rect;
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GetClientRect(GetDesktopWindow(), &screen_rect);
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*width = screen_rect.right - screen_rect.left;
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*height = screen_rect.bottom - screen_rect.top;
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}
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else
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{
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*width = g_resize_width;
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*height = g_resize_height;
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}
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}
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static bool gfx_ctx_init(void)
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{
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if (g_inited)
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return false;
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g_quit = false;
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g_restore_desktop = false;
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WNDCLASSEX wndclass = {0};
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wndclass.cbSize = sizeof(wndclass);
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wndclass.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
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wndclass.lpfnWndProc = WndProc;
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wndclass.hInstance = GetModuleHandle(NULL);
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wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
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wndclass.lpszClassName = "RetroArch";
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if (!RegisterClassEx(&wndclass))
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return false;
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return true;
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}
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static bool set_fullscreen(unsigned width, unsigned height)
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{
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DEVMODE devmode;
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memset(&devmode, 0, sizeof(devmode));
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devmode.dmSize = sizeof(DEVMODE);
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devmode.dmPelsWidth = width;
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devmode.dmPelsHeight = height;
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devmode.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT;
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return ChangeDisplaySettings(&devmode, CDS_FULLSCREEN) == DISP_CHANGE_SUCCESSFUL;
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}
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static bool gfx_ctx_set_video_mode(
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unsigned width, unsigned height,
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unsigned bits, bool fullscreen)
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{
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(void)bits;
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DWORD style;
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RECT screen_rect;
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GetClientRect(GetDesktopWindow(), &screen_rect);
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g_resize_width = width;
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g_resize_height = height;
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if (fullscreen)
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{
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style = WS_POPUP | WS_VISIBLE;
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AdjustWindowRect(&screen_rect, style, FALSE);
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width = screen_rect.right - screen_rect.left;
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height = screen_rect.bottom - screen_rect.top;
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if (!set_fullscreen(width, height))
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goto error;
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g_restore_desktop = true;
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}
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else
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{
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style = WS_OVERLAPPEDWINDOW;
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RECT rect = {0};
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rect.right = width;
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rect.bottom = height;
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AdjustWindowRect(&rect, style, FALSE);
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width = rect.right - rect.left;
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height = rect.bottom - rect.top;
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}
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g_hwnd = CreateWindowEx(0, "RetroArch", "RetroArch", style,
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CW_USEDEFAULT, CW_USEDEFAULT, width, height,
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NULL, NULL, NULL, NULL);
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if (!g_hwnd)
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goto error;
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gfx_ctx_update_window_title(true);
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if (!fullscreen)
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{
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ShowCursor(FALSE);
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ShowWindow(g_hwnd, SW_RESTORE);
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UpdateWindow(g_hwnd);
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SetForegroundWindow(g_hwnd);
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SetFocus(g_hwnd);
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}
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// Wait until GL context is created (or failed to do so ...)
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MSG msg;
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while (!g_inited && !g_quit && GetMessage(&msg, g_hwnd, 0, 0))
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{
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TranslateMessage(&msg);
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DispatchMessage(&msg);
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}
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if (g_quit)
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goto error;
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p_swap_interval = (BOOL (APIENTRY *)(int))wglGetProcAddress("wglSwapIntervalEXT");
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gfx_ctx_swap_interval(g_interval);
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driver.display_type = RARCH_DISPLAY_WIN32;
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driver.video_display = 0;
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driver.video_window = (uintptr_t)g_hwnd;
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return true;
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error:
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gfx_ctx_destroy();
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return false;
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}
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static void gfx_ctx_destroy(void)
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{
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if (g_hrc)
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{
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wglMakeCurrent(NULL, NULL);
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wglDeleteContext(g_hrc);
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g_hrc = NULL;
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}
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if (g_hwnd && g_hdc)
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{
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ReleaseDC(g_hwnd, g_hdc);
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g_hdc = NULL;
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}
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if (g_hwnd)
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{
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DestroyWindow(g_hwnd);
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UnregisterClass("RetroArch", GetModuleHandle(NULL));
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g_hwnd = NULL;
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}
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if (g_restore_desktop)
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{
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ChangeDisplaySettings(NULL, 0);
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g_restore_desktop = false;
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}
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g_inited = false;
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}
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static void gfx_ctx_input_driver(const input_driver_t **input, void **input_data)
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{
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void *dinput = input_dinput.init();
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*input = dinput ? &input_dinput : NULL;
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*input_data = dinput;
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}
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static bool gfx_ctx_has_focus(void)
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{
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if (!g_inited)
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return false;
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return GetFocus() == g_hwnd;
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}
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static gfx_ctx_proc_t gfx_ctx_get_proc_address(const char *symbol)
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{
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return (gfx_ctx_proc_t)wglGetProcAddress(symbol);
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}
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static bool gfx_ctx_bind_api(enum gfx_ctx_api api)
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{
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return api == GFX_CTX_OPENGL_API;
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}
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const gfx_ctx_driver_t gfx_ctx_wgl = {
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gfx_ctx_init,
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gfx_ctx_destroy,
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gfx_ctx_bind_api,
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gfx_ctx_swap_interval,
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gfx_ctx_set_video_mode,
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gfx_ctx_get_video_size,
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NULL,
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gfx_ctx_update_window_title,
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gfx_ctx_check_window,
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gfx_ctx_set_resize,
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gfx_ctx_has_focus,
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gfx_ctx_swap_buffers,
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gfx_ctx_input_driver,
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gfx_ctx_get_proc_address,
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"wgl",
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};
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