Shamusworld >> Repos - apple2/blob - src/video.cpp

   1 //
   2 // VIDEO.CPP: SDL/local hardware specific video routines
   3 //
   4 // by James Hammons
   5 //
   6 // JLH = James Hammons <jlhamm@acm.org>
   7 //
   8 // WHO  WHEN        WHAT
   9 // ---  ----------  ------------------------------------------------------------
  10 // JLH  01/04/2006  Added changelog ;-)
  11 // JLH  01/20/2006  Cut out unnecessary buffering
  12 //
  13
  14 #include "video.h"
  15 #include <string.h>     // Why??? (for memset, etc... Lazy!) Dunno why, but this just strikes me as wrong...
  16 #include <malloc.h>
  17 //#include "gui/gui.h"
  18 #include "apple2-icon-64x64.h"
  19 #include "log.h"
  20 #include "settings.h"
  21
  22
  23 // Exported global variables (actually, these are LOCAL global variables, EXPORTED...)
  24
  25 static SDL_Window * sdlWindow = NULL;
  26 SDL_Renderer * sdlRenderer = NULL;
  27 static SDL_Texture * sdlTexture = NULL;
  28 uint32_t scrBuffer[VIRTUAL_SCREEN_WIDTH * VIRTUAL_SCREEN_HEIGHT * sizeof(uint32_t)];
  29
  30
  31 //
  32 // Prime SDL and create surfaces
  33 //
  34 bool InitVideo(void)
  35 {
  36         if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK | SDL_INIT_AUDIO | SDL_INIT_TIMER | SDL_INIT_NOPARACHUTE) != 0)
  37         {
  38                 WriteLog("Video: Could not initialize the SDL library: %s\n", SDL_GetError());
  39                 return false;
  40         }
  41
  42         int retVal = SDL_CreateWindowAndRenderer(VIRTUAL_SCREEN_WIDTH * 2, VIRTUAL_SCREEN_HEIGHT * 2, SDL_WINDOW_OPENGL, &sdlWindow, &sdlRenderer);
  43
  44         if (retVal != 0)
  45         {
  46                 WriteLog("Video: Could not window and/or renderer: %s\n", SDL_GetError());
  47                 return false;
  48         }
  49
  50         // Make the scaled rendering look smoother.
  51         SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
  52 //      SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "nearest");
  53         SDL_RenderSetLogicalSize(sdlRenderer, VIRTUAL_SCREEN_WIDTH, VIRTUAL_SCREEN_HEIGHT);
  54
  55         // Set the application's icon & title...
  56         SDL_Surface * iconSurface = SDL_CreateRGBSurfaceFrom(icon, 64, 64, 32, 64*4, 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000);
  57         SDL_SetWindowIcon(sdlWindow, iconSurface);
  58         SDL_FreeSurface(iconSurface);
  59         SDL_SetWindowTitle(sdlWindow, "Apple2 Emulator");
  60
  61         sdlTexture = SDL_CreateTexture(sdlRenderer,
  62                 SDL_PIXELFORMAT_ABGR8888, SDL_TEXTUREACCESS_STREAMING,
  63                 VIRTUAL_SCREEN_WIDTH, VIRTUAL_SCREEN_HEIGHT);
  64
  65         WriteLog("Video: Successfully initialized.\n");
  66         return true;
  67 }
  68
  69
  70 //
  71 // Free various SDL components
  72 //
  73 void VideoDone(void)
  74 {
  75         WriteLog("Video: Shutting down SDL...\n");
  76         SDL_Quit();
  77         WriteLog("Video: Done.\n");
  78 }
  79
  80
  81 //
  82 // Render the screen buffer to the primary screen surface
  83 //
  84 void RenderScreenBuffer(void)
  85 {
  86         SDL_UpdateTexture(sdlTexture, NULL, scrBuffer, VIRTUAL_SCREEN_WIDTH * sizeof(Uint32));
  87         SDL_RenderClear(sdlRenderer);
  88         SDL_RenderCopy(sdlRenderer, sdlTexture, NULL, NULL);
  89 }
  90
  91
  92 //
  93 // Fullscreen <-> window switching
  94 //
  95 void ToggleFullScreen(void)
  96 {
  97         settings.fullscreen = !settings.fullscreen;
  98
  99         int retVal = SDL_SetWindowFullscreen(sdlWindow, (settings.fullscreen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0));
 100         SDL_ShowCursor(settings.fullscreen ? 0 : 1);
 101
 102         if (retVal != 0)
 103                 WriteLog("Video::ToggleFullScreen: SDL error = %s\n", SDL_GetError());
 104 }
 105
 106