mirror of
https://github.com/CTCaer/RetroArch.git
synced 2025-01-09 04:21:33 +00:00
476 lines
11 KiB
C++
476 lines
11 KiB
C++
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2015 - 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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#include <math.h>
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/* Win32/WGL context. */
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/* necessary for mingw32 multimon defines: */
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#ifndef _WIN32_WINNT
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#define _WIN32_WINNT 0x0500 //_WIN32_WINNT_WIN2K
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#endif
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#include <string.h>
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#include <math.h>
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#include <windows.h>
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#include <commdlg.h>
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#include <dynamic/dylib.h>
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#include "../../driver.h"
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#include "../../dynamic.h"
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#include "../../runloop.h"
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#include "../video_context_driver.h"
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#include "../video_monitor.h"
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#include "../common/gl_common.h"
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#include "../common/win32_common.h"
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#ifndef WGL_CONTEXT_MAJOR_VERSION_ARB
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#define WGL_CONTEXT_MAJOR_VERSION_ARB 0x2091
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#endif
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#ifndef WGL_CONTEXT_MINOR_VERSION_ARB
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#define WGL_CONTEXT_MINOR_VERSION_ARB 0x2092
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#endif
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#ifndef WGL_CONTEXT_PROFILE_MASK_ARB
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#define WGL_CONTEXT_PROFILE_MASK_ARB 0x9126
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#endif
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#ifndef WGL_CONTEXT_CORE_PROFILE_BIT_ARB
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#define WGL_CONTEXT_CORE_PROFILE_BIT_ARB 0x0001
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#endif
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#ifndef WGL_CONTEXT_FLAGS_ARB
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#define WGL_CONTEXT_FLAGS_ARB 0x2094
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#endif
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#ifndef WGL_CONTEXT_DEBUG_BIT_ARB
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#define WGL_CONTEXT_DEBUG_BIT_ARB 0x0001
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#endif
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typedef HGLRC (APIENTRY *wglCreateContextAttribsProc)(HDC, HGLRC, const int*);
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static BOOL (APIENTRY *p_swap_interval)(int);
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static bool g_use_hw_ctx;
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static HGLRC g_hrc;
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static HGLRC g_hw_hrc;
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static HDC g_hdc;
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static unsigned g_major;
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static unsigned g_minor;
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static unsigned g_interval;
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static dylib_t dll_handle = NULL; /* Handle to OpenGL32.dll */
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static wglCreateContextAttribsProc pcreate_context;
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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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void create_gl_context(HWND hwnd, bool *quit)
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{
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bool core_context;
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const struct retro_hw_render_callback *hw_render =
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(const struct retro_hw_render_callback*)video_driver_callback();
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driver_t *driver = driver_get_ptr();
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bool debug = hw_render->debug_context;
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#ifdef _WIN32
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dll_handle = dylib_load("OpenGL32.dll");
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#endif
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g_hdc = GetDC(hwnd);
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setup_pixel_format(g_hdc);
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#ifdef GL_DEBUG
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debug = true;
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#endif
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core_context = (g_major * 1000 + g_minor) >= 3001;
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if (g_hrc)
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{
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RARCH_LOG("[WGL]: Using cached GL context.\n");
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driver->video_cache_context_ack = true;
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}
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else
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{
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g_hrc = wglCreateContext(g_hdc);
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/* We'll create shared context later if not. */
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if (g_hrc && !core_context && !debug)
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{
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g_hw_hrc = wglCreateContext(g_hdc);
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if (g_hw_hrc)
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{
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if (!wglShareLists(g_hrc, g_hw_hrc))
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{
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RARCH_LOG("[WGL]: Failed to share contexts.\n");
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*quit = true;
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}
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}
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else
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*quit = true;
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}
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}
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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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*quit = true;
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}
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else
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{
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*quit = true;
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return;
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}
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if (core_context || debug)
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{
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int attribs[16];
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int *aptr = attribs;
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if (core_context)
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{
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*aptr++ = WGL_CONTEXT_MAJOR_VERSION_ARB;
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*aptr++ = g_major;
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*aptr++ = WGL_CONTEXT_MINOR_VERSION_ARB;
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*aptr++ = g_minor;
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/* Technically, we don't have core/compat until 3.2.
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* Version 3.1 is either compat or not depending
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* on GL_ARB_compatibility.
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*/
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if ((g_major * 1000 + g_minor) >= 3002)
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{
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*aptr++ = WGL_CONTEXT_PROFILE_MASK_ARB;
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*aptr++ = WGL_CONTEXT_CORE_PROFILE_BIT_ARB;
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}
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}
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if (debug)
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{
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*aptr++ = WGL_CONTEXT_FLAGS_ARB;
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*aptr++ = WGL_CONTEXT_DEBUG_BIT_ARB;
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}
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*aptr = 0;
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if (!pcreate_context)
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pcreate_context = (wglCreateContextAttribsProc)
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wglGetProcAddress("wglCreateContextAttribsARB");
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if (pcreate_context)
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{
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HGLRC context = pcreate_context(g_hdc, NULL, attribs);
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if (context)
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{
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wglMakeCurrent(NULL, NULL);
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wglDeleteContext(g_hrc);
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g_hrc = context;
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if (!wglMakeCurrent(g_hdc, g_hrc))
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*quit = true;
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}
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else
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RARCH_ERR("[WGL]: Failed to create core context. Falling back to legacy context.\n");
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if (g_use_hw_ctx)
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{
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g_hw_hrc = pcreate_context(g_hdc, context, attribs);
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if (!g_hw_hrc)
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{
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RARCH_ERR("[WGL]: Failed to create shared context.\n");
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*quit = true;
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}
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}
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}
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else
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RARCH_ERR("[WGL]: wglCreateContextAttribsARB not supported.\n");
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}
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}
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void *dinput_wgl;
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static void gfx_ctx_wgl_swap_interval(void *data, unsigned interval)
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{
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(void)data;
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g_interval = interval;
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if (!g_hrc)
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return;
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if (!p_swap_interval)
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return;
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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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static void gfx_ctx_wgl_check_window(void *data, bool *quit,
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bool *resize, unsigned *width, unsigned *height, unsigned frame_count)
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{
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win32_check_window(quit, resize, width, height);
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}
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static void gfx_ctx_wgl_swap_buffers(void *data)
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{
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(void)data;
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SwapBuffers(g_hdc);
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}
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static void gfx_ctx_wgl_set_resize(void *data,
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unsigned width, unsigned height)
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{
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(void)data;
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(void)width;
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(void)height;
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}
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static void gfx_ctx_wgl_update_window_title(void *data)
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{
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char buf[128] = {0};
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char buf_fps[128] = {0};
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settings_t *settings = config_get_ptr();
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HWND window = win32_get_window();
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(void)data;
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if (video_monitor_get_fps(buf, sizeof(buf),
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buf_fps, sizeof(buf_fps)))
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SetWindowText(window, buf);
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if (settings->fps_show)
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rarch_main_msg_queue_push(buf_fps, 1, 1, false);
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}
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static void gfx_ctx_wgl_get_video_size(void *data, unsigned *width, unsigned *height)
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{
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(void)data;
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HWND window = win32_get_window();
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if (!window)
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{
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unsigned mon_id;
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RECT mon_rect;
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MONITORINFOEX current_mon;
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HMONITOR hm_to_use = NULL;
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win32_monitor_info(¤t_mon, &hm_to_use, &mon_id);
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mon_rect = current_mon.rcMonitor;
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*width = mon_rect.right - mon_rect.left;
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*height = mon_rect.bottom - mon_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_wgl_init(void *data)
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{
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WNDCLASSEX wndclass = {0};
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(void)data;
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if (g_inited)
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return false;
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win32_window_reset();
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win32_monitor_init();
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if (!win32_window_init(&wndclass, true, NULL))
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return false;
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return true;
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}
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static void gfx_ctx_wgl_destroy(void *data)
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{
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driver_t *driver = driver_get_ptr();
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HWND window = win32_get_window();
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(void)data;
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if (g_hrc)
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{
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glFinish();
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wglMakeCurrent(NULL, NULL);
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if (!driver->video_cache_context)
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{
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if (g_hw_hrc)
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wglDeleteContext(g_hw_hrc);
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wglDeleteContext(g_hrc);
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g_hrc = NULL;
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g_hw_hrc = NULL;
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}
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}
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if (window && g_hdc)
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{
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ReleaseDC(window, g_hdc);
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g_hdc = NULL;
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}
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if (window)
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{
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win32_monitor_from_window(window, true);
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win32_destroy_window();
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}
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if (g_restore_desktop)
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{
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win32_monitor_get_info();
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g_restore_desktop = false;
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}
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g_inited = false;
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g_major = g_minor = 0;
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p_swap_interval = NULL;
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}
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static bool gfx_ctx_wgl_set_video_mode(void *data,
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unsigned width, unsigned height,
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bool fullscreen)
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{
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if (!win32_set_video_mode(data, width, height, fullscreen))
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goto error;
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p_swap_interval = (BOOL (APIENTRY *)(int))wglGetProcAddress("wglSwapIntervalEXT");
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gfx_ctx_wgl_swap_interval(data, g_interval);
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return true;
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error:
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gfx_ctx_wgl_destroy(data);
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return false;
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}
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static void gfx_ctx_wgl_input_driver(void *data,
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const input_driver_t **input, void **input_data)
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{
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(void)data;
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dinput_wgl = input_dinput.init();
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*input = dinput_wgl ? &input_dinput : NULL;
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*input_data = dinput_wgl;
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}
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static bool gfx_ctx_wgl_has_focus(void *data)
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{
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return win32_has_focus();
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}
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static bool gfx_ctx_wgl_suppress_screensaver(void *data, bool enable)
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{
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return win32_suppress_screensaver(data, enable);
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}
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static bool gfx_ctx_wgl_has_windowed(void *data)
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{
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(void)data;
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return true;
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}
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static gfx_ctx_proc_t gfx_ctx_wgl_get_proc_address(const char *symbol)
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{
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void *func = (void *)wglGetProcAddress(symbol);
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if (func)
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return (gfx_ctx_proc_t)wglGetProcAddress(symbol);
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return (gfx_ctx_proc_t)GetProcAddress((HINSTANCE)dll_handle, symbol);
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}
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static bool gfx_ctx_wgl_get_metrics(void *data,
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enum display_metric_types type, float *value)
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{
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return win32_get_metrics(data, type, value);
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}
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static bool gfx_ctx_wgl_bind_api(void *data,
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enum gfx_ctx_api api, unsigned major, unsigned minor)
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{
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(void)data;
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g_major = major;
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g_minor = minor;
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return api == GFX_CTX_OPENGL_API;
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}
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static void gfx_ctx_wgl_show_mouse(void *data, bool state)
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{
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(void)data;
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win32_show_cursor(state);
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}
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static void gfx_ctx_wgl_bind_hw_render(void *data, bool enable)
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{
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g_use_hw_ctx = enable;
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if (g_hdc)
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wglMakeCurrent(g_hdc, enable ? g_hw_hrc : g_hrc);
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}
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const gfx_ctx_driver_t gfx_ctx_wgl = {
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gfx_ctx_wgl_init,
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gfx_ctx_wgl_destroy,
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gfx_ctx_wgl_bind_api,
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gfx_ctx_wgl_swap_interval,
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gfx_ctx_wgl_set_video_mode,
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gfx_ctx_wgl_get_video_size,
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NULL, /* get_video_output_size */
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NULL, /* get_video_output_prev */
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NULL, /* get_video_output_next */
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gfx_ctx_wgl_get_metrics,
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NULL,
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gfx_ctx_wgl_update_window_title,
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gfx_ctx_wgl_check_window,
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gfx_ctx_wgl_set_resize,
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gfx_ctx_wgl_has_focus,
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gfx_ctx_wgl_suppress_screensaver,
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gfx_ctx_wgl_has_windowed,
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gfx_ctx_wgl_swap_buffers,
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gfx_ctx_wgl_input_driver,
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gfx_ctx_wgl_get_proc_address,
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NULL,
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NULL,
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gfx_ctx_wgl_show_mouse,
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"wgl",
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gfx_ctx_wgl_bind_hw_render,
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};
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