diff src/video/dga/SDL_dgavideo.c @ 1895:c121d94672cb

SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 10 Jul 2006 21:04:37 +0000
parents cc6bea4bb90d
children
line wrap: on
line diff
--- a/src/video/dga/SDL_dgavideo.c	Thu Jul 06 18:01:37 2006 +0000
+++ b/src/video/dga/SDL_dgavideo.c	Mon Jul 10 21:04:37 2006 +0000
@@ -44,1057 +44,1107 @@
 /*#define DGA_DEBUG*/
 
 /* Heheh we're using X11 event code */
-extern void X11_SaveScreenSaver(Display *display, int *saved_timeout, BOOL *dpms);
-extern void X11_DisableScreenSaver(Display *display);
-extern void X11_RestoreScreenSaver(Display *display, int saved_timeout, BOOL dpms);
+extern void X11_SaveScreenSaver(Display * display, int *saved_timeout,
+                                BOOL * dpms);
+extern void X11_DisableScreenSaver(Display * display);
+extern void X11_RestoreScreenSaver(Display * display, int saved_timeout,
+                                   BOOL dpms);
 
 /* Initialization/Query functions */
-static int DGA_VideoInit(_THIS, SDL_PixelFormat *vformat);
-static SDL_Rect **DGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
-static SDL_Surface *DGA_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
+static int DGA_VideoInit(_THIS, SDL_PixelFormat * vformat);
+static SDL_Rect **DGA_ListModes(_THIS, SDL_PixelFormat * format,
+                                Uint32 flags);
+static SDL_Surface *DGA_SetVideoMode(_THIS, SDL_Surface * current, int width,
+                                     int height, int bpp, Uint32 flags);
 static int DGA_SetColors(_THIS, int firstcolor, int ncolors,
-			 SDL_Color *colors);
-static int DGA_SetGammaRamp(_THIS, Uint16 *ramp);
+                         SDL_Color * colors);
+static int DGA_SetGammaRamp(_THIS, Uint16 * ramp);
 static void DGA_VideoQuit(_THIS);
 
 /* Hardware surface functions */
-static int DGA_InitHWSurfaces(_THIS, SDL_Surface *screen, Uint8 *base, int size);
+static int DGA_InitHWSurfaces(_THIS, SDL_Surface * screen, Uint8 * base,
+                              int size);
 static void DGA_FreeHWSurfaces(_THIS);
-static int DGA_AllocHWSurface(_THIS, SDL_Surface *surface);
-static int DGA_FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color);
-static int DGA_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst);
-static int DGA_LockHWSurface(_THIS, SDL_Surface *surface);
-static void DGA_UnlockHWSurface(_THIS, SDL_Surface *surface);
-static void DGA_FreeHWSurface(_THIS, SDL_Surface *surface);
-static int DGA_FlipHWSurface(_THIS, SDL_Surface *surface);
+static int DGA_AllocHWSurface(_THIS, SDL_Surface * surface);
+static int DGA_FillHWRect(_THIS, SDL_Surface * dst, SDL_Rect * rect,
+                          Uint32 color);
+static int DGA_CheckHWBlit(_THIS, SDL_Surface * src, SDL_Surface * dst);
+static int DGA_LockHWSurface(_THIS, SDL_Surface * surface);
+static void DGA_UnlockHWSurface(_THIS, SDL_Surface * surface);
+static void DGA_FreeHWSurface(_THIS, SDL_Surface * surface);
+static int DGA_FlipHWSurface(_THIS, SDL_Surface * surface);
 
 /* DGA driver bootstrap functions */
 
-static int DGA_Available(void)
+static int
+DGA_Available(void)
 {
-	const char *display = NULL;
-	Display *dpy = NULL;
-	int available = 0;
+    const char *display = NULL;
+    Display *dpy = NULL;
+    int available = 0;
 
-	/* The driver is available is available if the display is local
-	   and the DGA 2.0+ extension is available, and we can map mem.
-	*/
-	if ( SDL_X11_LoadSymbols() ) {
-		if ( (SDL_strncmp(XDisplayName(display), ":", 1) == 0) ||
-		     (SDL_strncmp(XDisplayName(display), "unix:", 5) == 0) ) {
-			dpy = XOpenDisplay(display);
-			if ( dpy ) {
-				int events, errors, major, minor;
+    /* The driver is available is available if the display is local
+       and the DGA 2.0+ extension is available, and we can map mem.
+     */
+    if (SDL_X11_LoadSymbols()) {
+        if ((SDL_strncmp(XDisplayName(display), ":", 1) == 0) ||
+            (SDL_strncmp(XDisplayName(display), "unix:", 5) == 0)) {
+            dpy = XOpenDisplay(display);
+            if (dpy) {
+                int events, errors, major, minor;
 
-				if ( SDL_NAME(XDGAQueryExtension)(dpy, &events, &errors) &&
-				     SDL_NAME(XDGAQueryVersion)(dpy, &major, &minor) ) {
-					int screen;
+                if (SDL_NAME(XDGAQueryExtension)
+                    (dpy, &events, &errors)
+                    && SDL_NAME(XDGAQueryVersion) (dpy, &major, &minor)) {
+                    int screen;
 
-					screen = DefaultScreen(dpy);
-					if ( (major >= 2) && 
-					     SDL_NAME(XDGAOpenFramebuffer)(dpy, screen) ) {
-						available = 1;
-						SDL_NAME(XDGACloseFramebuffer)(dpy, screen);
-					}
-				}
-				XCloseDisplay(dpy);
-			}
-		}
-		SDL_X11_UnloadSymbols();
-	}
-	return(available);
+                    screen = DefaultScreen(dpy);
+                    if ((major >= 2) &&
+                        SDL_NAME(XDGAOpenFramebuffer) (dpy, screen)) {
+                        available = 1;
+                        SDL_NAME(XDGACloseFramebuffer) (dpy, screen);
+                    }
+                }
+                XCloseDisplay(dpy);
+            }
+        }
+        SDL_X11_UnloadSymbols();
+    }
+    return (available);
 }
 
-static void DGA_DeleteDevice(SDL_VideoDevice *device)
+static void
+DGA_DeleteDevice(SDL_VideoDevice * device)
 {
-	if (device != NULL) {
-		SDL_free(device->hidden);
-		SDL_free(device);
-		SDL_X11_UnloadSymbols();
-	}
+    if (device != NULL) {
+        SDL_free(device->hidden);
+        SDL_free(device);
+        SDL_X11_UnloadSymbols();
+    }
 }
 
-static SDL_VideoDevice *DGA_CreateDevice(int devindex)
+static SDL_VideoDevice *
+DGA_CreateDevice(int devindex)
 {
-	SDL_VideoDevice *device = NULL;
+    SDL_VideoDevice *device = NULL;
 
-	/* Initialize all variables that we clean on shutdown */
-	if (SDL_X11_LoadSymbols()) {
-		device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice));
-		if ( device ) {
-			SDL_memset(device, 0, (sizeof *device));
-			device->hidden = (struct SDL_PrivateVideoData *)
-					SDL_malloc((sizeof *device->hidden));
-		}
-		if ( (device == NULL) || (device->hidden == NULL) ) {
-			SDL_OutOfMemory();
-			if ( device ) {
-				SDL_free(device);
-			}
-			SDL_X11_UnloadSymbols();
-			return(0);
-		}
-		SDL_memset(device->hidden, 0, (sizeof *device->hidden));
+    /* Initialize all variables that we clean on shutdown */
+    if (SDL_X11_LoadSymbols()) {
+        device = (SDL_VideoDevice *) SDL_malloc(sizeof(SDL_VideoDevice));
+        if (device) {
+            SDL_memset(device, 0, (sizeof *device));
+            device->hidden = (struct SDL_PrivateVideoData *)
+                SDL_malloc((sizeof *device->hidden));
+        }
+        if ((device == NULL) || (device->hidden == NULL)) {
+            SDL_OutOfMemory();
+            if (device) {
+                SDL_free(device);
+            }
+            SDL_X11_UnloadSymbols();
+            return (0);
+        }
+        SDL_memset(device->hidden, 0, (sizeof *device->hidden));
 
-		/* Set the function pointers */
-		device->VideoInit = DGA_VideoInit;
-		device->ListModes = DGA_ListModes;
-		device->SetVideoMode = DGA_SetVideoMode;
-		device->SetColors = DGA_SetColors;
-		device->UpdateRects = NULL;
-		device->VideoQuit = DGA_VideoQuit;
-		device->AllocHWSurface = DGA_AllocHWSurface;
-		device->CheckHWBlit = DGA_CheckHWBlit;
-		device->FillHWRect = DGA_FillHWRect;
-		device->SetHWColorKey = NULL;
-		device->SetHWAlpha = NULL;
-		device->LockHWSurface = DGA_LockHWSurface;
-		device->UnlockHWSurface = DGA_UnlockHWSurface;
-		device->FlipHWSurface = DGA_FlipHWSurface;
-		device->FreeHWSurface = DGA_FreeHWSurface;
-		device->SetGammaRamp = DGA_SetGammaRamp;
-		device->GetGammaRamp = NULL;
-		device->SetCaption = NULL;
-		device->SetIcon = NULL;
-		device->IconifyWindow = NULL;
-		device->GrabInput = NULL;
-		device->GetWMInfo = NULL;
-		device->InitOSKeymap = DGA_InitOSKeymap;
-		device->PumpEvents = DGA_PumpEvents;
+        /* Set the function pointers */
+        device->VideoInit = DGA_VideoInit;
+        device->ListModes = DGA_ListModes;
+        device->SetVideoMode = DGA_SetVideoMode;
+        device->SetColors = DGA_SetColors;
+        device->UpdateRects = NULL;
+        device->VideoQuit = DGA_VideoQuit;
+        device->AllocHWSurface = DGA_AllocHWSurface;
+        device->CheckHWBlit = DGA_CheckHWBlit;
+        device->FillHWRect = DGA_FillHWRect;
+        device->SetHWColorKey = NULL;
+        device->SetHWAlpha = NULL;
+        device->LockHWSurface = DGA_LockHWSurface;
+        device->UnlockHWSurface = DGA_UnlockHWSurface;
+        device->FlipHWSurface = DGA_FlipHWSurface;
+        device->FreeHWSurface = DGA_FreeHWSurface;
+        device->SetGammaRamp = DGA_SetGammaRamp;
+        device->GetGammaRamp = NULL;
+        device->SetCaption = NULL;
+        device->SetIcon = NULL;
+        device->IconifyWindow = NULL;
+        device->GrabInput = NULL;
+        device->GetWMInfo = NULL;
+        device->InitOSKeymap = DGA_InitOSKeymap;
+        device->PumpEvents = DGA_PumpEvents;
 
-		device->free = DGA_DeleteDevice;
-	}
+        device->free = DGA_DeleteDevice;
+    }
 
-	return device;
+    return device;
 }
 
 VideoBootStrap DGA_bootstrap = {
-	"dga", "XFree86 DGA 2.0",
-	DGA_Available, DGA_CreateDevice
+    "dga", "XFree86 DGA 2.0",
+    DGA_Available, DGA_CreateDevice
 };
 
-static int DGA_AddMode(_THIS, int bpp, int w, int h)
+static int
+DGA_AddMode(_THIS, int bpp, int w, int h)
 {
-	SDL_Rect *mode;
-	int index;
-	int next_mode;
+    SDL_Rect *mode;
+    int index;
+    int next_mode;
 
-	/* Check to see if we already have this mode */
-	if ( bpp < 8 ) {  /* Not supported */
-		return(0);
-	}
-	index = ((bpp+7)/8)-1;
-	if ( SDL_nummodes[index] > 0 ) {
-		mode = SDL_modelist[index][SDL_nummodes[index]-1];
-		if ( (mode->w == w) && (mode->h == h) ) {
-			return(0);
-		}
-	}
+    /* Check to see if we already have this mode */
+    if (bpp < 8) {              /* Not supported */
+        return (0);
+    }
+    index = ((bpp + 7) / 8) - 1;
+    if (SDL_nummodes[index] > 0) {
+        mode = SDL_modelist[index][SDL_nummodes[index] - 1];
+        if ((mode->w == w) && (mode->h == h)) {
+            return (0);
+        }
+    }
 
-	/* Set up the new video mode rectangle */
-	mode = (SDL_Rect *)SDL_malloc(sizeof *mode);
-	if ( mode == NULL ) {
-		SDL_OutOfMemory();
-		return(-1);
-	}
-	mode->x = 0;
-	mode->y = 0;
-	mode->w = w;
-	mode->h = h;
+    /* Set up the new video mode rectangle */
+    mode = (SDL_Rect *) SDL_malloc(sizeof *mode);
+    if (mode == NULL) {
+        SDL_OutOfMemory();
+        return (-1);
+    }
+    mode->x = 0;
+    mode->y = 0;
+    mode->w = w;
+    mode->h = h;
 
-	/* Allocate the new list of modes, and fill in the new mode */
-	next_mode = SDL_nummodes[index];
-	SDL_modelist[index] = (SDL_Rect **)
-	       SDL_realloc(SDL_modelist[index], (1+next_mode+1)*sizeof(SDL_Rect *));
-	if ( SDL_modelist[index] == NULL ) {
-		SDL_OutOfMemory();
-		SDL_nummodes[index] = 0;
-		SDL_free(mode);
-		return(-1);
-	}
-	SDL_modelist[index][next_mode] = mode;
-	SDL_modelist[index][next_mode+1] = NULL;
-	SDL_nummodes[index]++;
+    /* Allocate the new list of modes, and fill in the new mode */
+    next_mode = SDL_nummodes[index];
+    SDL_modelist[index] = (SDL_Rect **)
+        SDL_realloc(SDL_modelist[index],
+                    (1 + next_mode + 1) * sizeof(SDL_Rect *));
+    if (SDL_modelist[index] == NULL) {
+        SDL_OutOfMemory();
+        SDL_nummodes[index] = 0;
+        SDL_free(mode);
+        return (-1);
+    }
+    SDL_modelist[index][next_mode] = mode;
+    SDL_modelist[index][next_mode + 1] = NULL;
+    SDL_nummodes[index]++;
 
-	return(0);
+    return (0);
 }
 
 /* This whole function is a hack. :) */
-static Uint32 get_video_size(_THIS)
+static Uint32
+get_video_size(_THIS)
 {
-	/* This is a non-exported function from libXxf86dga.a */
-	extern unsigned char *SDL_NAME(XDGAGetMappedMemory)(int screen);
-	FILE *proc;
-	unsigned long mem;
-	unsigned start, stop;
-	char line[BUFSIZ];
-	Uint32 size;
+    /* This is a non-exported function from libXxf86dga.a */
+    extern unsigned char *SDL_NAME(XDGAGetMappedMemory) (int screen);
+    FILE *proc;
+    unsigned long mem;
+    unsigned start, stop;
+    char line[BUFSIZ];
+    Uint32 size;
 
-	mem = (unsigned long)SDL_NAME(XDGAGetMappedMemory)(DGA_Screen);
-	size = 0;
-	proc = fopen("/proc/self/maps", "r");
-	if ( proc ) {
-		while ( fgets(line, sizeof(line)-1, proc) ) {
-			SDL_sscanf(line, "%x-%x", &start, &stop);
-			if ( start == mem ) {
-				size = (Uint32)((stop-start)/1024);
-				break;
-			}
-		}
-		fclose(proc);
-	}
-	return(size);
+    mem = (unsigned long) SDL_NAME(XDGAGetMappedMemory) (DGA_Screen);
+    size = 0;
+    proc = fopen("/proc/self/maps", "r");
+    if (proc) {
+        while (fgets(line, sizeof(line) - 1, proc)) {
+            SDL_sscanf(line, "%x-%x", &start, &stop);
+            if (start == mem) {
+                size = (Uint32) ((stop - start) / 1024);
+                break;
+            }
+        }
+        fclose(proc);
+    }
+    return (size);
 }
 
 #ifdef DGA_DEBUG
-static void PrintMode(SDL_NAME(XDGAMode) *mode)
+static void
+PrintMode(SDL_NAME(XDGAMode) * mode)
 {
-	printf("Mode: %s (%dx%d) at %d bpp (%f refresh, %d pitch) num: %d\n",
-		mode->name,
-		mode->viewportWidth, mode->viewportHeight,
-		mode->depth == 24 ? mode->bitsPerPixel : mode->depth,
-		mode->verticalRefresh, mode->bytesPerScanline, mode->num);
-	printf("\tRGB: 0x%8.8x 0x%8.8x 0x%8.8x (%d - %s)\n",
-		mode->redMask, mode->greenMask, mode->blueMask,
-		mode->visualClass,
-		mode->visualClass == TrueColor ? "truecolor" :
-		mode->visualClass == DirectColor ? "directcolor" :
-		mode->visualClass == PseudoColor ? "pseudocolor" : "unknown");
-	printf("\tFlags: ");
-	if ( mode->flags & XDGAConcurrentAccess )
-		printf(" XDGAConcurrentAccess");
-	if ( mode->flags & XDGASolidFillRect )
-		printf(" XDGASolidFillRect");
-	if ( mode->flags & XDGABlitRect )
-		printf(" XDGABlitRect");
-	if ( mode->flags & XDGABlitTransRect )
-		printf(" XDGABlitTransRect");
-	if ( mode->flags & XDGAPixmap )
-		printf(" XDGAPixmap");
-	if ( mode->flags & XDGAInterlaced )
-		printf(" XDGAInterlaced");
-	if ( mode->flags & XDGADoublescan )
-		printf(" XDGADoublescan");
-	if ( mode->viewportFlags & XDGAFlipRetrace )
-		printf(" XDGAFlipRetrace");
-	if ( mode->viewportFlags & XDGAFlipImmediate )
-		printf(" XDGAFlipImmediate");
-	printf("\n");
+    printf("Mode: %s (%dx%d) at %d bpp (%f refresh, %d pitch) num: %d\n",
+           mode->name,
+           mode->viewportWidth, mode->viewportHeight,
+           mode->depth == 24 ? mode->bitsPerPixel : mode->depth,
+           mode->verticalRefresh, mode->bytesPerScanline, mode->num);
+    printf("\tRGB: 0x%8.8x 0x%8.8x 0x%8.8x (%d - %s)\n",
+           mode->redMask, mode->greenMask, mode->blueMask,
+           mode->visualClass,
+           mode->visualClass == TrueColor ? "truecolor" :
+           mode->visualClass == DirectColor ? "directcolor" :
+           mode->visualClass == PseudoColor ? "pseudocolor" : "unknown");
+    printf("\tFlags: ");
+    if (mode->flags & XDGAConcurrentAccess)
+        printf(" XDGAConcurrentAccess");
+    if (mode->flags & XDGASolidFillRect)
+        printf(" XDGASolidFillRect");
+    if (mode->flags & XDGABlitRect)
+        printf(" XDGABlitRect");
+    if (mode->flags & XDGABlitTransRect)
+        printf(" XDGABlitTransRect");
+    if (mode->flags & XDGAPixmap)
+        printf(" XDGAPixmap");
+    if (mode->flags & XDGAInterlaced)
+        printf(" XDGAInterlaced");
+    if (mode->flags & XDGADoublescan)
+        printf(" XDGADoublescan");
+    if (mode->viewportFlags & XDGAFlipRetrace)
+        printf(" XDGAFlipRetrace");
+    if (mode->viewportFlags & XDGAFlipImmediate)
+        printf(" XDGAFlipImmediate");
+    printf("\n");
 }
 #endif /* DGA_DEBUG */
 
-static int cmpmodes(const void *va, const void *vb)
+static int
+cmpmodes(const void *va, const void *vb)
 {
-    const SDL_NAME(XDGAMode) *a = (const SDL_NAME(XDGAMode) *)va;
-    const SDL_NAME(XDGAMode) *b = (const SDL_NAME(XDGAMode) *)vb;
+    const SDL_NAME(XDGAMode) * a = (const SDL_NAME(XDGAMode) *) va;
+    const SDL_NAME(XDGAMode) * b = (const SDL_NAME(XDGAMode) *) vb;
 
-    if ( (a->viewportWidth == b->viewportWidth) &&
-         (b->viewportHeight == a->viewportHeight) ) {
+    if ((a->viewportWidth == b->viewportWidth) &&
+        (b->viewportHeight == a->viewportHeight)) {
         /* Prefer 32 bpp over 24 bpp, 16 bpp over 15 bpp */
         int a_bpp = a->depth == 24 ? a->bitsPerPixel : a->depth;
         int b_bpp = b->depth == 24 ? b->bitsPerPixel : b->depth;
-        if ( a_bpp != b_bpp ) {
+        if (a_bpp != b_bpp) {
             return b_bpp - a_bpp;
         }
         /* Prefer DirectColor visuals, for gamma support */
-        if ( a->visualClass == DirectColor && b->visualClass != DirectColor )
+        if (a->visualClass == DirectColor && b->visualClass != DirectColor)
             return -1;
-        if ( b->visualClass == DirectColor && a->visualClass != DirectColor )
+        if (b->visualClass == DirectColor && a->visualClass != DirectColor)
             return 1;
         /* Maintain server refresh rate sorting */
         return a->num - b->num;
-    } else if ( a->viewportWidth == b->viewportWidth ) {
+    } else if (a->viewportWidth == b->viewportWidth) {
         return b->viewportHeight - a->viewportHeight;
     } else {
         return b->viewportWidth - a->viewportWidth;
     }
 }
-static void UpdateHWInfo(_THIS, SDL_NAME(XDGAMode) *mode)
+static void
+UpdateHWInfo(_THIS, SDL_NAME(XDGAMode) * mode)
 {
-	this->info.wm_available = 0;
-	this->info.hw_available = 1;
-	if ( mode->flags & XDGABlitRect ) {
-		this->info.blit_hw = 1;
-	} else {
-		this->info.blit_hw = 0;
-	}
-	if ( mode->flags & XDGABlitTransRect ) {
-		this->info.blit_hw_CC = 1;
-	} else {
-		this->info.blit_hw_CC = 0;
-	}
-	if ( mode->flags & XDGASolidFillRect ) {
-		this->info.blit_fill = 1;
-	} else {
-		this->info.blit_fill = 0;
-	}
-	this->info.video_mem = get_video_size(this);
+    this->info.wm_available = 0;
+    this->info.hw_available = 1;
+    if (mode->flags & XDGABlitRect) {
+        this->info.blit_hw = 1;
+    } else {
+        this->info.blit_hw = 0;
+    }
+    if (mode->flags & XDGABlitTransRect) {
+        this->info.blit_hw_CC = 1;
+    } else {
+        this->info.blit_hw_CC = 0;
+    }
+    if (mode->flags & XDGASolidFillRect) {
+        this->info.blit_fill = 1;
+    } else {
+        this->info.blit_fill = 0;
+    }
+    this->info.video_mem = get_video_size(this);
 }
 
-static int DGA_VideoInit(_THIS, SDL_PixelFormat *vformat)
+static int
+DGA_VideoInit(_THIS, SDL_PixelFormat * vformat)
 {
-	const char *display;
-	int event_base, error_base;
-	int major_version, minor_version;
-	Visual *visual;
-	SDL_NAME(XDGAMode) *modes;
-	int i, num_modes;
+    const char *display;
+    int event_base, error_base;
+    int major_version, minor_version;
+    Visual *visual;
+    SDL_NAME(XDGAMode) * modes;
+    int i, num_modes;
 
-	/* Open the X11 display */
-	display = NULL;		/* Get it from DISPLAY environment variable */
+    /* Open the X11 display */
+    display = NULL;             /* Get it from DISPLAY environment variable */
 
-	DGA_Display = XOpenDisplay(display);
-	if ( DGA_Display == NULL ) {
-		SDL_SetError("Couldn't open X11 display");
-		return(-1);
-	}
+    DGA_Display = XOpenDisplay(display);
+    if (DGA_Display == NULL) {
+        SDL_SetError("Couldn't open X11 display");
+        return (-1);
+    }
 
-	/* Check for the DGA extension */
-	if ( ! SDL_NAME(XDGAQueryExtension)(DGA_Display, &event_base, &error_base) ||
-	     ! SDL_NAME(XDGAQueryVersion)(DGA_Display, &major_version, &minor_version) ) {
-		SDL_SetError("DGA extension not available");
-		XCloseDisplay(DGA_Display);
-		return(-1);
-	}
-	if ( major_version < 2 ) {
-		SDL_SetError("DGA driver requires DGA 2.0 or newer");
-		XCloseDisplay(DGA_Display);
-		return(-1);
-	}
-	DGA_event_base = event_base;
+    /* Check for the DGA extension */
+    if (!SDL_NAME(XDGAQueryExtension) (DGA_Display, &event_base, &error_base)
+        || !SDL_NAME(XDGAQueryVersion) (DGA_Display, &major_version,
+                                        &minor_version)) {
+        SDL_SetError("DGA extension not available");
+        XCloseDisplay(DGA_Display);
+        return (-1);
+    }
+    if (major_version < 2) {
+        SDL_SetError("DGA driver requires DGA 2.0 or newer");
+        XCloseDisplay(DGA_Display);
+        return (-1);
+    }
+    DGA_event_base = event_base;
 
-	/* Determine the current screen size */
-	this->info.current_w = DisplayWidth(DGA_Display, DGA_Screen);
-	this->info.current_h = DisplayHeight(DGA_Display, DGA_Screen);
+    /* Determine the current screen size */
+    this->info.current_w = DisplayWidth(DGA_Display, DGA_Screen);
+    this->info.current_h = DisplayHeight(DGA_Display, DGA_Screen);
 
-	/* Determine the current screen depth */
-	visual = DefaultVisual(DGA_Display, DGA_Screen);
-	{
-		XPixmapFormatValues *pix_format;
-		int i, num_formats;
+    /* Determine the current screen depth */
+    visual = DefaultVisual(DGA_Display, DGA_Screen);
+    {
+        XPixmapFormatValues *pix_format;
+        int i, num_formats;
 
-		vformat->BitsPerPixel = DefaultDepth(DGA_Display, DGA_Screen);
-		pix_format = XListPixmapFormats(DGA_Display, &num_formats);
-		if ( pix_format == NULL ) {
-			SDL_SetError("Couldn't determine screen formats");
-			XCloseDisplay(DGA_Display);
-			return(-1);
-		}
-		for ( i=0; i<num_formats; ++i ) {
-			if ( vformat->BitsPerPixel == pix_format[i].depth )
-				break;
-		}
-		if ( i != num_formats )
-			vformat->BitsPerPixel = pix_format[i].bits_per_pixel;
-		XFree((char *)pix_format);
-	}
-	if ( vformat->BitsPerPixel > 8 ) {
-		vformat->Rmask = visual->red_mask;
-		vformat->Gmask = visual->green_mask;
-		vformat->Bmask = visual->blue_mask;
-	}
+        vformat->BitsPerPixel = DefaultDepth(DGA_Display, DGA_Screen);
+        pix_format = XListPixmapFormats(DGA_Display, &num_formats);
+        if (pix_format == NULL) {
+            SDL_SetError("Couldn't determine screen formats");
+            XCloseDisplay(DGA_Display);
+            return (-1);
+        }
+        for (i = 0; i < num_formats; ++i) {
+            if (vformat->BitsPerPixel == pix_format[i].depth)
+                break;
+        }
+        if (i != num_formats)
+            vformat->BitsPerPixel = pix_format[i].bits_per_pixel;
+        XFree((char *) pix_format);
+    }
+    if (vformat->BitsPerPixel > 8) {
+        vformat->Rmask = visual->red_mask;
+        vformat->Gmask = visual->green_mask;
+        vformat->Bmask = visual->blue_mask;
+    }
 
-	/* Open access to the framebuffer */
-	if ( ! SDL_NAME(XDGAOpenFramebuffer)(DGA_Display, DGA_Screen) ) {
-		SDL_SetError("Unable to map the video memory");
-		XCloseDisplay(DGA_Display);
-		return(-1);
-	}
+    /* Open access to the framebuffer */
+    if (!SDL_NAME(XDGAOpenFramebuffer) (DGA_Display, DGA_Screen)) {
+        SDL_SetError("Unable to map the video memory");
+        XCloseDisplay(DGA_Display);
+        return (-1);
+    }
 
-	/* Save DPMS and screensaver settings */
-	X11_SaveScreenSaver(DGA_Display, &screensaver_timeout, &dpms_enabled);
-	X11_DisableScreenSaver(DGA_Display);
+    /* Save DPMS and screensaver settings */
+    X11_SaveScreenSaver(DGA_Display, &screensaver_timeout, &dpms_enabled);
+    X11_DisableScreenSaver(DGA_Display);
 
-	/* Query for the list of available video modes */
-	modes = SDL_NAME(XDGAQueryModes)(DGA_Display, DGA_Screen, &num_modes);
-	SDL_qsort(modes, num_modes, sizeof *modes, cmpmodes);
-	for ( i=0; i<num_modes; ++i ) {
-		if ( ((modes[i].visualClass == PseudoColor) ||
-		      (modes[i].visualClass == DirectColor) ||
-		      (modes[i].visualClass == TrueColor)) && 
-		     !(modes[i].flags & (XDGAInterlaced|XDGADoublescan)) ) {
+    /* Query for the list of available video modes */
+    modes = SDL_NAME(XDGAQueryModes) (DGA_Display, DGA_Screen, &num_modes);
+    SDL_qsort(modes, num_modes, sizeof *modes, cmpmodes);
+    for (i = 0; i < num_modes; ++i) {
+        if (((modes[i].visualClass == PseudoColor) ||
+             (modes[i].visualClass == DirectColor) ||
+             (modes[i].visualClass == TrueColor)) &&
+            !(modes[i].flags & (XDGAInterlaced | XDGADoublescan))) {
 #ifdef DGA_DEBUG
-			PrintMode(&modes[i]);
+            PrintMode(&modes[i]);
 #endif
-			DGA_AddMode(this, modes[i].bitsPerPixel,
-			            modes[i].viewportWidth,
-			            modes[i].viewportHeight);
-		}
-	}
-	UpdateHWInfo(this, modes);
-	XFree(modes);
+            DGA_AddMode(this, modes[i].bitsPerPixel,
+                        modes[i].viewportWidth, modes[i].viewportHeight);
+        }
+    }
+    UpdateHWInfo(this, modes);
+    XFree(modes);
 
-	/* Create the hardware surface lock mutex */
-	hw_lock = SDL_CreateMutex();
-	if ( hw_lock == NULL ) {
-		SDL_SetError("Unable to create lock mutex");
-		DGA_VideoQuit(this);
-		return(-1);
-	}
-
+    /* Create the hardware surface lock mutex */
+    hw_lock = SDL_CreateMutex();
+    if (hw_lock == NULL) {
+        SDL_SetError("Unable to create lock mutex");
+        DGA_VideoQuit(this);
+        return (-1);
+    }
 #ifdef LOCK_DGA_DISPLAY
-	/* Create the event lock so we're thread-safe.. :-/ */
-	event_lock = SDL_CreateMutex();
+    /* Create the event lock so we're thread-safe.. :-/ */
+    event_lock = SDL_CreateMutex();
 #endif /* LOCK_DGA_DISPLAY */
 
-	/* We're done! */
-	return(0);
+    /* We're done! */
+    return (0);
 }
 
-SDL_Rect **DGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
+SDL_Rect **
+DGA_ListModes(_THIS, SDL_PixelFormat * format, Uint32 flags)
 {
-	return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]);
+    return (SDL_modelist[((format->BitsPerPixel + 7) / 8) - 1]);
 }
 
 /* Various screen update functions available */
-static void DGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects);
+static void DGA_DirectUpdate(_THIS, int numrects, SDL_Rect * rects);
 
-SDL_Surface *DGA_SetVideoMode(_THIS, SDL_Surface *current,
-				int width, int height, int bpp, Uint32 flags)
+SDL_Surface *
+DGA_SetVideoMode(_THIS, SDL_Surface * current,
+                 int width, int height, int bpp, Uint32 flags)
 {
-	SDL_NAME(XDGAMode) *modes;
-	int i, num_modes;
-	SDL_NAME(XDGADevice) *mode;
-	int screen_len;
-	Uint8 *surfaces_mem;
-	int surfaces_len;
+    SDL_NAME(XDGAMode) * modes;
+    int i, num_modes;
+    SDL_NAME(XDGADevice) * mode;
+    int screen_len;
+    Uint8 *surfaces_mem;
+    int surfaces_len;
 
-	/* Free any previous colormap */
-	if ( DGA_colormap ) {
-		XFreeColormap(DGA_Display, DGA_colormap);
-		DGA_colormap = 0;
-	}
+    /* Free any previous colormap */
+    if (DGA_colormap) {
+        XFreeColormap(DGA_Display, DGA_colormap);
+        DGA_colormap = 0;
+    }
 
-	/* Search for a matching video mode */
-	modes = SDL_NAME(XDGAQueryModes)(DGA_Display, DGA_Screen, &num_modes);
-	SDL_qsort(modes, num_modes, sizeof *modes, cmpmodes);
-	for ( i=0; i<num_modes; ++i ) {
-		int depth;
+    /* Search for a matching video mode */
+    modes = SDL_NAME(XDGAQueryModes) (DGA_Display, DGA_Screen, &num_modes);
+    SDL_qsort(modes, num_modes, sizeof *modes, cmpmodes);
+    for (i = 0; i < num_modes; ++i) {
+        int depth;
 
-		depth = modes[i].depth;
-		if ( depth == 24 ) { /* Distinguish between 24 and 32 bpp */
-			depth = modes[i].bitsPerPixel;
-		}
-		if ( (depth == bpp) &&
-		     (modes[i].viewportWidth == width) &&
-		     (modes[i].viewportHeight == height) &&
-		     ((modes[i].visualClass == PseudoColor) ||
-		      (modes[i].visualClass == DirectColor) ||
-		      (modes[i].visualClass == TrueColor)) &&
-		     !(modes[i].flags & (XDGAInterlaced|XDGADoublescan)) ) {
-			break;
-		}
-	}
-	if ( i == num_modes ) {
-		SDL_SetError("No matching video mode found");
-		return(NULL);
-	}
+        depth = modes[i].depth;
+        if (depth == 24) {      /* Distinguish between 24 and 32 bpp */
+            depth = modes[i].bitsPerPixel;
+        }
+        if ((depth == bpp) &&
+            (modes[i].viewportWidth == width) &&
+            (modes[i].viewportHeight == height) &&
+            ((modes[i].visualClass == PseudoColor) ||
+             (modes[i].visualClass == DirectColor) ||
+             (modes[i].visualClass == TrueColor)) &&
+            !(modes[i].flags & (XDGAInterlaced | XDGADoublescan))) {
+            break;
+        }
+    }
+    if (i == num_modes) {
+        SDL_SetError("No matching video mode found");
+        return (NULL);
+    }
 #ifdef DGA_DEBUG
-	PrintMode(&modes[i]);
+    PrintMode(&modes[i]);
 #endif
 
-	/* Set the video mode */
-	mode = SDL_NAME(XDGASetMode)(DGA_Display, DGA_Screen, modes[i].num);
-	XFree(modes);
-	if ( mode == NULL ) {
-		SDL_SetError("Unable to switch to requested mode");
-		return(NULL);
-	}
-	DGA_visualClass = mode->mode.visualClass;
-	memory_base = (Uint8 *)mode->data;
-	memory_pitch = mode->mode.bytesPerScanline;
+    /* Set the video mode */
+    mode = SDL_NAME(XDGASetMode) (DGA_Display, DGA_Screen, modes[i].num);
+    XFree(modes);
+    if (mode == NULL) {
+        SDL_SetError("Unable to switch to requested mode");
+        return (NULL);
+    }
+    DGA_visualClass = mode->mode.visualClass;
+    memory_base = (Uint8 *) mode->data;
+    memory_pitch = mode->mode.bytesPerScanline;
+
+    /* Set up the new mode framebuffer */
+    current->flags = (SDL_FULLSCREEN | SDL_HWSURFACE);
+    current->w = mode->mode.viewportWidth;
+    current->h = mode->mode.viewportHeight;
+    current->pitch = memory_pitch;
+    current->pixels = memory_base;
+    if (!SDL_ReallocFormat(current, mode->mode.bitsPerPixel,
+                           mode->mode.redMask,
+                           mode->mode.greenMask, mode->mode.blueMask, 0)) {
+        return (NULL);
+    }
+    screen_len = current->h * current->pitch;
 
-	/* Set up the new mode framebuffer */
-	current->flags = (SDL_FULLSCREEN|SDL_HWSURFACE);
-	current->w = mode->mode.viewportWidth;
-	current->h = mode->mode.viewportHeight;
-	current->pitch = memory_pitch;
-	current->pixels = memory_base;
-	if ( ! SDL_ReallocFormat(current, mode->mode.bitsPerPixel,
-	                                  mode->mode.redMask,
-	                                  mode->mode.greenMask,
-	                                  mode->mode.blueMask, 0) ) {
-		return(NULL);
-	}
-	screen_len = current->h*current->pitch;
+    /* Create a colormap if necessary */
+    if ((DGA_visualClass == PseudoColor) || (DGA_visualClass == DirectColor)) {
+        DGA_colormap =
+            SDL_NAME(XDGACreateColormap) (DGA_Display, DGA_Screen, mode,
+                                          AllocAll);
+        if (DGA_visualClass == PseudoColor) {
+            current->flags |= SDL_HWPALETTE;
+        } else {
+            /* Initialize the colormap to the identity mapping */
+            SDL_GetGammaRamp(0, 0, 0);
+            this->screen = current;
+            DGA_SetGammaRamp(this, this->gamma);
+            this->screen = NULL;
+        }
+    } else {
+        DGA_colormap =
+            SDL_NAME(XDGACreateColormap) (DGA_Display, DGA_Screen, mode,
+                                          AllocNone);
+    }
+    SDL_NAME(XDGAInstallColormap) (DGA_Display, DGA_Screen, DGA_colormap);
 
-	/* Create a colormap if necessary */
-	if ( (DGA_visualClass == PseudoColor) ||
-             (DGA_visualClass == DirectColor) ) {
-		DGA_colormap = SDL_NAME(XDGACreateColormap)(DGA_Display, DGA_Screen,
-							mode, AllocAll);
-		if ( DGA_visualClass == PseudoColor ) {
-			current->flags |= SDL_HWPALETTE;
-		} else {
-	    		/* Initialize the colormap to the identity mapping */
-	    		SDL_GetGammaRamp(0, 0, 0);
-	    		this->screen = current;
-	    		DGA_SetGammaRamp(this, this->gamma);
-			this->screen = NULL;
-		}
-	} else {
-		DGA_colormap = SDL_NAME(XDGACreateColormap)(DGA_Display, DGA_Screen,
-							mode, AllocNone);
-	}
-	SDL_NAME(XDGAInstallColormap)(DGA_Display, DGA_Screen, DGA_colormap);
+    /* Update the hardware capabilities */
+    UpdateHWInfo(this, &mode->mode);
 
-	/* Update the hardware capabilities */
-	UpdateHWInfo(this, &mode->mode);
-
-	/* Set up the information for hardware surfaces */
-	surfaces_mem = (Uint8 *)current->pixels + screen_len;
-	surfaces_len = (mode->mode.imageHeight*current->pitch - screen_len);
+    /* Set up the information for hardware surfaces */
+    surfaces_mem = (Uint8 *) current->pixels + screen_len;
+    surfaces_len = (mode->mode.imageHeight * current->pitch - screen_len);
 
-	/* Update for double-buffering, if we can */
-	SDL_NAME(XDGASetViewport)(DGA_Display, DGA_Screen, 0, 0, XDGAFlipRetrace);
-	if ( flags & SDL_DOUBLEBUF ) {
-		if ( mode->mode.imageHeight >= (current->h*2) ) {
-			current->flags |= SDL_DOUBLEBUF;
-			flip_page = 0;
-			flip_yoffset[0] = 0;
-			flip_yoffset[1] = current->h;
-			flip_address[0] = memory_base;
-			flip_address[1] = memory_base+screen_len;
-			surfaces_mem += screen_len;
-			surfaces_len -= screen_len;
-		}
-	}
+    /* Update for double-buffering, if we can */
+    SDL_NAME(XDGASetViewport) (DGA_Display, DGA_Screen, 0, 0,
+                               XDGAFlipRetrace);
+    if (flags & SDL_DOUBLEBUF) {
+        if (mode->mode.imageHeight >= (current->h * 2)) {
+            current->flags |= SDL_DOUBLEBUF;
+            flip_page = 0;
+            flip_yoffset[0] = 0;
+            flip_yoffset[1] = current->h;
+            flip_address[0] = memory_base;
+            flip_address[1] = memory_base + screen_len;
+            surfaces_mem += screen_len;
+            surfaces_len -= screen_len;
+        }
+    }
 
-	/* Allocate memory tracking for hardware surfaces */
-	DGA_FreeHWSurfaces(this);
-	if ( surfaces_len < 0 ) {
-		surfaces_len = 0;
-	}
-	DGA_InitHWSurfaces(this, current, surfaces_mem, surfaces_len);
+    /* Allocate memory tracking for hardware surfaces */
+    DGA_FreeHWSurfaces(this);
+    if (surfaces_len < 0) {
+        surfaces_len = 0;
+    }
+    DGA_InitHWSurfaces(this, current, surfaces_mem, surfaces_len);
 
-	/* Expose the back buffer as surface memory */
-	if ( current->flags & SDL_DOUBLEBUF ) {
-		this->screen = current;
-		DGA_FlipHWSurface(this, current);
-		this->screen = NULL;
-	}
+    /* Expose the back buffer as surface memory */
+    if (current->flags & SDL_DOUBLEBUF) {
+        this->screen = current;
+        DGA_FlipHWSurface(this, current);
+        this->screen = NULL;
+    }
 
-	/* Set the update rectangle function */
-	this->UpdateRects = DGA_DirectUpdate;
+    /* Set the update rectangle function */
+    this->UpdateRects = DGA_DirectUpdate;
 
-	/* Enable mouse and keyboard support */
-	{ long input_mask;
-	  input_mask = (KeyPressMask | KeyReleaseMask);
-	  input_mask |= (ButtonPressMask | ButtonReleaseMask);
-	  input_mask |= PointerMotionMask;
-	  SDL_NAME(XDGASelectInput)(DGA_Display, DGA_Screen, input_mask);
-	}
+    /* Enable mouse and keyboard support */
+    {
+        long input_mask;
+        input_mask = (KeyPressMask | KeyReleaseMask);
+        input_mask |= (ButtonPressMask | ButtonReleaseMask);
+        input_mask |= PointerMotionMask;
+        SDL_NAME(XDGASelectInput) (DGA_Display, DGA_Screen, input_mask);
+    }
 
-	/* We're done */
-	return(current);
+    /* We're done */
+    return (current);
 }
 
 #ifdef DGA_DEBUG
-static void DGA_DumpHWSurfaces(_THIS)
+static void
+DGA_DumpHWSurfaces(_THIS)
 {
-	vidmem_bucket *bucket;
+    vidmem_bucket *bucket;
 
-	printf("Memory left: %d (%d total)\n", surfaces_memleft, surfaces_memtotal);
-	printf("\n");
-	printf("         Base  Size\n");
-	for ( bucket=&surfaces; bucket; bucket=bucket->next ) {
-		printf("Bucket:  %p, %d (%s)\n", bucket->base, bucket->size, bucket->used ? "used" : "free");
-		if ( bucket->prev ) {
-			if ( bucket->base != bucket->prev->base+bucket->prev->size ) {
-				printf("Warning, corrupt bucket list! (prev)\n");
-			}
-		} else {
-			if ( bucket != &surfaces ) {
-				printf("Warning, corrupt bucket list! (!prev)\n");
-			}
-		}
-		if ( bucket->next ) {
-			if ( bucket->next->base != bucket->base+bucket->size ) {
-				printf("Warning, corrupt bucket list! (next)\n");
-			}
-		}
-	}
-	printf("\n");
+    printf("Memory left: %d (%d total)\n", surfaces_memleft,
+           surfaces_memtotal);
+    printf("\n");
+    printf("         Base  Size\n");
+    for (bucket = &surfaces; bucket; bucket = bucket->next) {
+        printf("Bucket:  %p, %d (%s)\n", bucket->base, bucket->size,
+               bucket->used ? "used" : "free");
+        if (bucket->prev) {
+            if (bucket->base != bucket->prev->base + bucket->prev->size) {
+                printf("Warning, corrupt bucket list! (prev)\n");
+            }
+        } else {
+            if (bucket != &surfaces) {
+                printf("Warning, corrupt bucket list! (!prev)\n");
+            }
+        }
+        if (bucket->next) {
+            if (bucket->next->base != bucket->base + bucket->size) {
+                printf("Warning, corrupt bucket list! (next)\n");
+            }
+        }
+    }
+    printf("\n");
 }
 #endif
 
-static int DGA_InitHWSurfaces(_THIS, SDL_Surface *screen, Uint8 *base, int size)
+static int
+DGA_InitHWSurfaces(_THIS, SDL_Surface * screen, Uint8 * base, int size)
 {
-	vidmem_bucket *bucket;
+    vidmem_bucket *bucket;
 
-	surfaces_memtotal = size;
-	surfaces_memleft = size;
+    surfaces_memtotal = size;
+    surfaces_memleft = size;
 
-	if ( surfaces_memleft > 0 ) {
-		bucket = (vidmem_bucket *)SDL_malloc(sizeof(*bucket));
-		if ( bucket == NULL ) {
-			SDL_OutOfMemory();
-			return(-1);
-		}
-		bucket->prev = &surfaces;
-		bucket->used = 0;
-		bucket->dirty = 0;
-		bucket->base = base;
-		bucket->size = size;
-		bucket->next = NULL;
-	} else {
-		bucket = NULL;
-	}
+    if (surfaces_memleft > 0) {
+        bucket = (vidmem_bucket *) SDL_malloc(sizeof(*bucket));
+        if (bucket == NULL) {
+            SDL_OutOfMemory();
+            return (-1);
+        }
+        bucket->prev = &surfaces;
+        bucket->used = 0;
+        bucket->dirty = 0;
+        bucket->base = base;
+        bucket->size = size;
+        bucket->next = NULL;
+    } else {
+        bucket = NULL;
+    }
 
-	surfaces.prev = NULL;
-	surfaces.used = 1;
-	surfaces.dirty = 0;
-	surfaces.base = screen->pixels;
-	surfaces.size = (unsigned int)((long)base - (long)surfaces.base);
-	surfaces.next = bucket;
-	screen->hwdata = (struct private_hwdata *)&surfaces;
-	return(0);
+    surfaces.prev = NULL;
+    surfaces.used = 1;
+    surfaces.dirty = 0;
+    surfaces.base = screen->pixels;
+    surfaces.size = (unsigned int) ((long) base - (long) surfaces.base);
+    surfaces.next = bucket;
+    screen->hwdata = (struct private_hwdata *) &surfaces;
+    return (0);
 }
-static void DGA_FreeHWSurfaces(_THIS)
+static void
+DGA_FreeHWSurfaces(_THIS)
 {
-	vidmem_bucket *bucket, *freeable;
+    vidmem_bucket *bucket, *freeable;
 
-	bucket = surfaces.next;
-	while ( bucket ) {
-		freeable = bucket;
-		bucket = bucket->next;
-		SDL_free(freeable);
-	}
-	surfaces.next = NULL;
+    bucket = surfaces.next;
+    while (bucket) {
+        freeable = bucket;
+        bucket = bucket->next;
+        SDL_free(freeable);
+    }
+    surfaces.next = NULL;
 }
 
-static __inline__ void DGA_AddBusySurface(SDL_Surface *surface)
+static __inline__ void
+DGA_AddBusySurface(SDL_Surface * surface)
 {
-	((vidmem_bucket *)surface->hwdata)->dirty = 1;
+    ((vidmem_bucket *) surface->hwdata)->dirty = 1;
 }
 
-static __inline__ int DGA_IsSurfaceBusy(SDL_Surface *surface)
+static __inline__ int
+DGA_IsSurfaceBusy(SDL_Surface * surface)
 {
-	return ((vidmem_bucket *)surface->hwdata)->dirty;
+    return ((vidmem_bucket *) surface->hwdata)->dirty;
 }
 
-static __inline__ void DGA_WaitBusySurfaces(_THIS)
+static __inline__ void
+DGA_WaitBusySurfaces(_THIS)
 {
-	vidmem_bucket *bucket;
+    vidmem_bucket *bucket;
 
-	/* Wait for graphic operations to complete */
-	SDL_NAME(XDGASync)(DGA_Display, DGA_Screen);
+    /* Wait for graphic operations to complete */
+    SDL_NAME(XDGASync) (DGA_Display, DGA_Screen);
 
-	/* Clear all surface dirty bits */
-	for ( bucket=&surfaces; bucket; bucket=bucket->next ) {
-		bucket->dirty = 0;
-	}
+    /* Clear all surface dirty bits */
+    for (bucket = &surfaces; bucket; bucket = bucket->next) {
+        bucket->dirty = 0;
+    }
 }
 
-static int DGA_AllocHWSurface(_THIS, SDL_Surface *surface)
+static int
+DGA_AllocHWSurface(_THIS, SDL_Surface * surface)
 {
-	vidmem_bucket *bucket;
-	int size;
-	int extra;
-	int retval = 0;
+    vidmem_bucket *bucket;
+    int size;
+    int extra;
+    int retval = 0;
 
 /* Temporarily, we only allow surfaces the same width as display.
    Some blitters require the pitch between two hardware surfaces
    to be the same.  Others have interesting alignment restrictions.
 */
-if ( surface->pitch > SDL_VideoSurface->pitch ) {
-	SDL_SetError("Surface requested wider than screen");
-	return(-1);
-}
-surface->pitch = SDL_VideoSurface->pitch;
-	size = surface->h * surface->pitch;
+    if (surface->pitch > SDL_VideoSurface->pitch) {
+        SDL_SetError("Surface requested wider than screen");
+        return (-1);
+    }
+    surface->pitch = SDL_VideoSurface->pitch;
+    size = surface->h * surface->pitch;
 #ifdef DGA_DEBUG
-	fprintf(stderr, "Allocating bucket of %d bytes\n", size);
+    fprintf(stderr, "Allocating bucket of %d bytes\n", size);
 #endif
-	LOCK_DISPLAY();
+    LOCK_DISPLAY();
 
-	/* Quick check for available mem */
-	if ( size > surfaces_memleft ) {
-		SDL_SetError("Not enough video memory");
-		retval = -1;
-		goto done;
-	}
+    /* Quick check for available mem */
+    if (size > surfaces_memleft) {
+        SDL_SetError("Not enough video memory");
+        retval = -1;
+        goto done;
+    }
 
-	/* Search for an empty bucket big enough */
-	for ( bucket=&surfaces; bucket; bucket=bucket->next ) {
-		if ( ! bucket->used && (size <= bucket->size) ) {
-			break;
-		}
-	}
-	if ( bucket == NULL ) {
-		SDL_SetError("Video memory too fragmented");
-		retval = -1;
-		goto done;
-	}
+    /* Search for an empty bucket big enough */
+    for (bucket = &surfaces; bucket; bucket = bucket->next) {
+        if (!bucket->used && (size <= bucket->size)) {
+            break;
+        }
+    }
+    if (bucket == NULL) {
+        SDL_SetError("Video memory too fragmented");
+        retval = -1;
+        goto done;
+    }
 
-	/* Create a new bucket for left-over memory */
-	extra = (bucket->size - size);
-	if ( extra ) {
-		vidmem_bucket *newbucket;
+    /* Create a new bucket for left-over memory */
+    extra = (bucket->size - size);
+    if (extra) {
+        vidmem_bucket *newbucket;
 
 #ifdef DGA_DEBUG
-	fprintf(stderr, "Adding new free bucket of %d bytes\n", extra);
+        fprintf(stderr, "Adding new free bucket of %d bytes\n", extra);
 #endif
-		newbucket = (vidmem_bucket *)SDL_malloc(sizeof(*newbucket));
-		if ( newbucket == NULL ) {
-			SDL_OutOfMemory();
-			retval = -1;
-			goto done;
-		}
-		newbucket->prev = bucket;
-		newbucket->used = 0;
-		newbucket->base = bucket->base+size;
-		newbucket->size = extra;
-		newbucket->next = bucket->next;
-		if ( bucket->next ) {
-			bucket->next->prev = newbucket;
-		}
-		bucket->next = newbucket;
-	}
+        newbucket = (vidmem_bucket *) SDL_malloc(sizeof(*newbucket));
+        if (newbucket == NULL) {
+            SDL_OutOfMemory();
+            retval = -1;
+            goto done;
+        }
+        newbucket->prev = bucket;
+        newbucket->used = 0;
+        newbucket->base = bucket->base + size;
+        newbucket->size = extra;
+        newbucket->next = bucket->next;
+        if (bucket->next) {
+            bucket->next->prev = newbucket;
+        }
+        bucket->next = newbucket;
+    }
 
-	/* Set the current bucket values and return it! */
-	bucket->used = 1;
-	bucket->size = size;
-	bucket->dirty = 0;
+    /* Set the current bucket values and return it! */
+    bucket->used = 1;
+    bucket->size = size;
+    bucket->dirty = 0;
 #ifdef DGA_DEBUG
-	fprintf(stderr, "Allocated %d bytes at %p\n", bucket->size, bucket->base);
+    fprintf(stderr, "Allocated %d bytes at %p\n", bucket->size, bucket->base);
 #endif
-	surfaces_memleft -= size;
-	surface->flags |= SDL_HWSURFACE;
-	surface->pixels = bucket->base;
-	surface->hwdata = (struct private_hwdata *)bucket;
-done:
-	UNLOCK_DISPLAY();
-	return(retval);
+    surfaces_memleft -= size;
+    surface->flags |= SDL_HWSURFACE;
+    surface->pixels = bucket->base;
+    surface->hwdata = (struct private_hwdata *) bucket;
+  done:
+    UNLOCK_DISPLAY();
+    return (retval);
 }
-static void DGA_FreeHWSurface(_THIS, SDL_Surface *surface)
+static void
+DGA_FreeHWSurface(_THIS, SDL_Surface * surface)
 {
-	vidmem_bucket *bucket, *freeable;
+    vidmem_bucket *bucket, *freeable;
 
-	/* Wait for any pending operations involving this surface */
-	if ( DGA_IsSurfaceBusy(surface) ) {
-		LOCK_DISPLAY();
-		DGA_WaitBusySurfaces(this);
-		UNLOCK_DISPLAY();
-	}
+    /* Wait for any pending operations involving this surface */
+    if (DGA_IsSurfaceBusy(surface)) {
+        LOCK_DISPLAY();
+        DGA_WaitBusySurfaces(this);
+        UNLOCK_DISPLAY();
+    }
 
-	/* Look for the bucket in the current list */
-	for ( bucket=&surfaces; bucket; bucket=bucket->next ) {
-		if ( bucket == (vidmem_bucket *)surface->hwdata ) {
-			break;
-		}
-	}
-	if ( bucket && bucket->used ) {
-		/* Add the memory back to the total */
+    /* Look for the bucket in the current list */
+    for (bucket = &surfaces; bucket; bucket = bucket->next) {
+        if (bucket == (vidmem_bucket *) surface->hwdata) {
+            break;
+        }
+    }
+    if (bucket && bucket->used) {
+        /* Add the memory back to the total */
 #ifdef DGA_DEBUG
-	printf("Freeing bucket of %d bytes\n", bucket->size);
+        printf("Freeing bucket of %d bytes\n", bucket->size);
 #endif
-		surfaces_memleft += bucket->size;
+        surfaces_memleft += bucket->size;
 
-		/* Can we merge the space with surrounding buckets? */
-		bucket->used = 0;
-		if ( bucket->next && ! bucket->next->used ) {
+        /* Can we merge the space with surrounding buckets? */
+        bucket->used = 0;
+        if (bucket->next && !bucket->next->used) {
 #ifdef DGA_DEBUG
-	printf("Merging with next bucket, for %d total bytes\n", bucket->size+bucket->next->size);
+            printf("Merging with next bucket, for %d total bytes\n",
+                   bucket->size + bucket->next->size);
 #endif
-			freeable = bucket->next;
-			bucket->size += bucket->next->size;
-			bucket->next = bucket->next->next;
-			if ( bucket->next ) {
-				bucket->next->prev = bucket;
-			}
-			SDL_free(freeable);
-		}
-		if ( bucket->prev && ! bucket->prev->used ) {
+            freeable = bucket->next;
+            bucket->size += bucket->next->size;
+            bucket->next = bucket->next->next;
+            if (bucket->next) {
+                bucket->next->prev = bucket;
+            }
+            SDL_free(freeable);
+        }
+        if (bucket->prev && !bucket->prev->used) {
 #ifdef DGA_DEBUG
-	printf("Merging with previous bucket, for %d total bytes\n", bucket->prev->size+bucket->size);
+            printf("Merging with previous bucket, for %d total bytes\n",
+                   bucket->prev->size + bucket->size);
 #endif
-			freeable = bucket;
-			bucket->prev->size += bucket->size;
-			bucket->prev->next = bucket->next;
-			if ( bucket->next ) {
-				bucket->next->prev = bucket->prev;
-			}
-			SDL_free(freeable);
-		}
-	}
-	surface->pixels = NULL;
-	surface->hwdata = NULL;
+            freeable = bucket;
+            bucket->prev->size += bucket->size;
+            bucket->prev->next = bucket->next;
+            if (bucket->next) {
+                bucket->next->prev = bucket->prev;
+            }
+            SDL_free(freeable);
+        }
+    }
+    surface->pixels = NULL;
+    surface->hwdata = NULL;
 }
 
-static __inline__ void DGA_dst_to_xy(_THIS, SDL_Surface *dst, int *x, int *y)
+static __inline__ void
+DGA_dst_to_xy(_THIS, SDL_Surface * dst, int *x, int *y)
 {
-	*x = (long)((Uint8 *)dst->pixels - memory_base)%memory_pitch;
-	*y = (long)((Uint8 *)dst->pixels - memory_base)/memory_pitch;
+    *x = (long) ((Uint8 *) dst->pixels - memory_base) % memory_pitch;
+    *y = (long) ((Uint8 *) dst->pixels - memory_base) / memory_pitch;
 }
 
-static int DGA_FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color)
+static int
+DGA_FillHWRect(_THIS, SDL_Surface * dst, SDL_Rect * rect, Uint32 color)
 {
-	int x, y;
-	unsigned int w, h;
+    int x, y;
+    unsigned int w, h;
 
-	/* Don't fill the visible part of the screen, wait until flipped */
-	LOCK_DISPLAY();
-	if ( was_flipped && (dst == this->screen) ) {
-		while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) )
-			/* Keep waiting for the hardware ... */ ;
-		was_flipped = 0;
-	}
-	DGA_dst_to_xy(this, dst, &x, &y);
-	x += rect->x;
-	y += rect->y;
-	w = rect->w;
-	h = rect->h;
+    /* Don't fill the visible part of the screen, wait until flipped */
+    LOCK_DISPLAY();
+    if (was_flipped && (dst == this->screen)) {
+        while (SDL_NAME(XDGAGetViewportStatus) (DGA_Display, DGA_Screen))
+            /* Keep waiting for the hardware ... */ ;
+        was_flipped = 0;
+    }
+    DGA_dst_to_xy(this, dst, &x, &y);
+    x += rect->x;
+    y += rect->y;
+    w = rect->w;
+    h = rect->h;
 #if 0
-  printf("Hardware accelerated rectangle fill: %dx%d at %d,%d\n", w, h, x, y);
+    printf("Hardware accelerated rectangle fill: %dx%d at %d,%d\n", w, h, x,
+           y);
 #endif
-	SDL_NAME(XDGAFillRectangle)(DGA_Display, DGA_Screen, x, y, w, h, color);
-	if ( !(this->screen->flags & SDL_DOUBLEBUF) ) {
-		XFlush(DGA_Display);
-	}
-	DGA_AddBusySurface(dst);
-	UNLOCK_DISPLAY();
-	return(0);
+    SDL_NAME(XDGAFillRectangle) (DGA_Display, DGA_Screen, x, y, w, h, color);
+    if (!(this->screen->flags & SDL_DOUBLEBUF)) {
+        XFlush(DGA_Display);
+    }
+    DGA_AddBusySurface(dst);
+    UNLOCK_DISPLAY();
+    return (0);
 }
 
-static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect,
-                       SDL_Surface *dst, SDL_Rect *dstrect)
+static int
+HWAccelBlit(SDL_Surface * src, SDL_Rect * srcrect,
+            SDL_Surface * dst, SDL_Rect * dstrect)
 {
-	SDL_VideoDevice *this;
-	int srcx, srcy;
-	int dstx, dsty;
-	unsigned int w, h;
+    SDL_VideoDevice *this;
+    int srcx, srcy;
+    int dstx, dsty;
+    unsigned int w, h;
 
-	this = current_video;
-	/* Don't blit to the visible part of the screen, wait until flipped */
-	LOCK_DISPLAY();
-	if ( was_flipped && (dst == this->screen) ) {
-		while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) )
-			/* Keep waiting for the hardware ... */ ;
-		was_flipped = 0;
-	}
-	DGA_dst_to_xy(this, src, &srcx, &srcy);
-	srcx += srcrect->x;
-	srcy += srcrect->y;
-	DGA_dst_to_xy(this, dst, &dstx, &dsty);
-	dstx += dstrect->x;
-	dsty += dstrect->y;
-	w = srcrect->w;
-	h = srcrect->h;
+    this = current_video;
+    /* Don't blit to the visible part of the screen, wait until flipped */
+    LOCK_DISPLAY();
+    if (was_flipped && (dst == this->screen)) {
+        while (SDL_NAME(XDGAGetViewportStatus) (DGA_Display, DGA_Screen))
+            /* Keep waiting for the hardware ... */ ;
+        was_flipped = 0;
+    }
+    DGA_dst_to_xy(this, src, &srcx, &srcy);
+    srcx += srcrect->x;
+    srcy += srcrect->y;
+    DGA_dst_to_xy(this, dst, &dstx, &dsty);
+    dstx += dstrect->x;
+    dsty += dstrect->y;
+    w = srcrect->w;
+    h = srcrect->h;
 #if 0
-  printf("Blitting %dx%d from %d,%d to %d,%d\n", w, h, srcx, srcy, dstx, dsty);
+    printf("Blitting %dx%d from %d,%d to %d,%d\n", w, h, srcx, srcy, dstx,
+           dsty);
 #endif
-	if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
-		SDL_NAME(XDGACopyTransparentArea)(DGA_Display, DGA_Screen,
-			srcx, srcy, w, h, dstx, dsty, src->format->colorkey);
-	} else {
-		SDL_NAME(XDGACopyArea)(DGA_Display, DGA_Screen,
-			srcx, srcy, w, h, dstx, dsty);
-	}
-	if ( !(this->screen->flags & SDL_DOUBLEBUF) ) {
-		XFlush(DGA_Display);
-	}
-	DGA_AddBusySurface(src);
-	DGA_AddBusySurface(dst);
-	UNLOCK_DISPLAY();
-	return(0);
+    if ((src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY) {
+        SDL_NAME(XDGACopyTransparentArea) (DGA_Display, DGA_Screen,
+                                           srcx, srcy, w, h, dstx, dsty,
+                                           src->format->colorkey);
+    } else {
+        SDL_NAME(XDGACopyArea) (DGA_Display, DGA_Screen,
+                                srcx, srcy, w, h, dstx, dsty);
+    }
+    if (!(this->screen->flags & SDL_DOUBLEBUF)) {
+        XFlush(DGA_Display);
+    }
+    DGA_AddBusySurface(src);
+    DGA_AddBusySurface(dst);
+    UNLOCK_DISPLAY();
+    return (0);
 }
 
-static int DGA_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst)
+static int
+DGA_CheckHWBlit(_THIS, SDL_Surface * src, SDL_Surface * dst)
 {
-	int accelerated;
+    int accelerated;
 
-	/* Set initial acceleration on */
-	src->flags |= SDL_HWACCEL;
+    /* Set initial acceleration on */
+    src->flags |= SDL_HWACCEL;
 
-	/* Set the surface attributes */
-	if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) {
-		if ( ! this->info.blit_hw_A ) {
-			src->flags &= ~SDL_HWACCEL;
-		}
-	}
-	if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
-		if ( ! this->info.blit_hw_CC ) {
-			src->flags &= ~SDL_HWACCEL;
-		}
-	}
+    /* Set the surface attributes */
+    if ((src->flags & SDL_SRCALPHA) == SDL_SRCALPHA) {
+        if (!this->info.blit_hw_A) {
+            src->flags &= ~SDL_HWACCEL;
+        }
+    }
+    if ((src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY) {
+        if (!this->info.blit_hw_CC) {
+            src->flags &= ~SDL_HWACCEL;
+        }
+    }
 
-	/* Check to see if final surface blit is accelerated */
-	accelerated = !!(src->flags & SDL_HWACCEL);
-	if ( accelerated ) {
-		src->map->hw_blit = HWAccelBlit;
-	}
-	return(accelerated);
+    /* Check to see if final surface blit is accelerated */
+    accelerated = !!(src->flags & SDL_HWACCEL);
+    if (accelerated) {
+        src->map->hw_blit = HWAccelBlit;
+    }
+    return (accelerated);
 }
 
-static __inline__ void DGA_WaitFlip(_THIS)
+static __inline__ void
+DGA_WaitFlip(_THIS)
 {
-	if ( was_flipped ) {
-		while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) )
-			/* Keep waiting for the hardware ... */ ;
-		was_flipped = 0;
-	}
+    if (was_flipped) {
+        while (SDL_NAME(XDGAGetViewportStatus) (DGA_Display, DGA_Screen))
+            /* Keep waiting for the hardware ... */ ;
+        was_flipped = 0;
+    }
 }
 
-static int DGA_LockHWSurface(_THIS, SDL_Surface *surface)
+static int
+DGA_LockHWSurface(_THIS, SDL_Surface * surface)
 {
-	if ( surface == this->screen ) {
-		SDL_mutexP(hw_lock);
-		LOCK_DISPLAY();
-		if ( DGA_IsSurfaceBusy(surface) ) {
-			DGA_WaitBusySurfaces(this);
-		}
-		DGA_WaitFlip(this);
-		UNLOCK_DISPLAY();
-	} else {
-		if ( DGA_IsSurfaceBusy(surface) ) {
-			LOCK_DISPLAY();
-			DGA_WaitBusySurfaces(this);
-			UNLOCK_DISPLAY();
-		}
-	}
-	return(0);
+    if (surface == this->screen) {
+        SDL_mutexP(hw_lock);
+        LOCK_DISPLAY();
+        if (DGA_IsSurfaceBusy(surface)) {
+            DGA_WaitBusySurfaces(this);
+        }
+        DGA_WaitFlip(this);
+        UNLOCK_DISPLAY();
+    } else {
+        if (DGA_IsSurfaceBusy(surface)) {
+            LOCK_DISPLAY();
+            DGA_WaitBusySurfaces(this);
+            UNLOCK_DISPLAY();
+        }
+    }
+    return (0);
 }
-static void DGA_UnlockHWSurface(_THIS, SDL_Surface *surface)
+static void
+DGA_UnlockHWSurface(_THIS, SDL_Surface * surface)
 {
-	if ( surface == this->screen ) {
-		SDL_mutexV(hw_lock);
-	}
+    if (surface == this->screen) {
+        SDL_mutexV(hw_lock);
+    }
 }
 
-static int DGA_FlipHWSurface(_THIS, SDL_Surface *surface)
+static int
+DGA_FlipHWSurface(_THIS, SDL_Surface * surface)
 {
-	/* Wait for vertical retrace and then flip display */
-	LOCK_DISPLAY();
-	if ( DGA_IsSurfaceBusy(this->screen) ) {
-		DGA_WaitBusySurfaces(this);
-	}
-	DGA_WaitFlip(this);
-	SDL_NAME(XDGASetViewport)(DGA_Display, DGA_Screen,
-	                0, flip_yoffset[flip_page], XDGAFlipRetrace);
-	XFlush(DGA_Display);
-	UNLOCK_DISPLAY();
-	was_flipped = 1;
-	flip_page = !flip_page;
+    /* Wait for vertical retrace and then flip display */
+    LOCK_DISPLAY();
+    if (DGA_IsSurfaceBusy(this->screen)) {
+        DGA_WaitBusySurfaces(this);
+    }
+    DGA_WaitFlip(this);
+    SDL_NAME(XDGASetViewport) (DGA_Display, DGA_Screen,
+                               0, flip_yoffset[flip_page], XDGAFlipRetrace);
+    XFlush(DGA_Display);
+    UNLOCK_DISPLAY();
+    was_flipped = 1;
+    flip_page = !flip_page;
 
-	surface->pixels = flip_address[flip_page];
-	return(0);
+    surface->pixels = flip_address[flip_page];
+    return (0);
 }
 
-static void DGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects)
+static void
+DGA_DirectUpdate(_THIS, int numrects, SDL_Rect * rects)
 {
-	/* The application is already updating the visible video memory */
-	return;
+    /* The application is already updating the visible video memory */
+    return;
 }
 
-static int DGA_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
+static int
+DGA_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color * colors)
 {
-        int i;
-	XColor  *xcmap;
+    int i;
+    XColor *xcmap;
 
-	/* This happens on initialization */
-	if ( ! DGA_colormap ) {
-		return(0);
-	}
-	xcmap = SDL_stack_alloc(XColor, ncolors);
-	for ( i=0; i<ncolors; ++i ) {
-		xcmap[i].pixel = firstcolor + i;
-		xcmap[i].red   = (colors[i].r<<8)|colors[i].r;
-		xcmap[i].green = (colors[i].g<<8)|colors[i].g;
-		xcmap[i].blue  = (colors[i].b<<8)|colors[i].b;
-		xcmap[i].flags = (DoRed|DoGreen|DoBlue);
-	}
-	LOCK_DISPLAY();
-	XStoreColors(DGA_Display, DGA_colormap, xcmap, ncolors);
-	XSync(DGA_Display, False);
-	UNLOCK_DISPLAY();
-	SDL_stack_free(xcmap);
+    /* This happens on initialization */
+    if (!DGA_colormap) {
+        return (0);
+    }
+    xcmap = SDL_stack_alloc(XColor, ncolors);
+    for (i = 0; i < ncolors; ++i) {
+        xcmap[i].pixel = firstcolor + i;
+        xcmap[i].red = (colors[i].r << 8) | colors[i].r;
+        xcmap[i].green = (colors[i].g << 8) | colors[i].g;
+        xcmap[i].blue = (colors[i].b << 8) | colors[i].b;
+        xcmap[i].flags = (DoRed | DoGreen | DoBlue);
+    }
+    LOCK_DISPLAY();
+    XStoreColors(DGA_Display, DGA_colormap, xcmap, ncolors);
+    XSync(DGA_Display, False);
+    UNLOCK_DISPLAY();
+    SDL_stack_free(xcmap);
 
-	/* That was easy. :) */
-	return(1);
+    /* That was easy. :) */
+    return (1);
 }
 
-int DGA_SetGammaRamp(_THIS, Uint16 *ramp)
+int
+DGA_SetGammaRamp(_THIS, Uint16 * ramp)
 {
-	int i, ncolors;
-	XColor xcmap[256];
+    int i, ncolors;
+    XColor xcmap[256];
 
-	/* See if actually setting the gamma is supported */
-	if ( DGA_visualClass != DirectColor ) {
-	    SDL_SetError("Gamma correction not supported on this visual");
-	    return(-1);
-	}
+    /* See if actually setting the gamma is supported */
+    if (DGA_visualClass != DirectColor) {
+        SDL_SetError("Gamma correction not supported on this visual");
+        return (-1);
+    }
 
-	/* Calculate the appropriate palette for the given gamma ramp */
-	if ( this->screen->format->BitsPerPixel <= 16 ) {
-		ncolors = 64; /* Is this right? */
-	} else {
-		ncolors = 256;
-	}
-	for ( i=0; i<ncolors; ++i ) {
-		Uint8 c = (256 * i / ncolors);
-		xcmap[i].pixel = SDL_MapRGB(this->screen->format, c, c, c);
-		xcmap[i].red   = ramp[0*256+c];
-		xcmap[i].green = ramp[1*256+c];
-		xcmap[i].blue  = ramp[2*256+c];
-		xcmap[i].flags = (DoRed|DoGreen|DoBlue);
-	}
-	LOCK_DISPLAY();
-	XStoreColors(DGA_Display, DGA_colormap, xcmap, ncolors);
-	XSync(DGA_Display, False);
-	UNLOCK_DISPLAY();
-	return(0);
+    /* Calculate the appropriate palette for the given gamma ramp */
+    if (this->screen->format->BitsPerPixel <= 16) {
+        ncolors = 64;           /* Is this right? */
+    } else {
+        ncolors = 256;
+    }
+    for (i = 0; i < ncolors; ++i) {
+        Uint8 c = (256 * i / ncolors);
+        xcmap[i].pixel = SDL_MapRGB(this->screen->format, c, c, c);
+        xcmap[i].red = ramp[0 * 256 + c];
+        xcmap[i].green = ramp[1 * 256 + c];
+        xcmap[i].blue = ramp[2 * 256 + c];
+        xcmap[i].flags = (DoRed | DoGreen | DoBlue);
+    }
+    LOCK_DISPLAY();
+    XStoreColors(DGA_Display, DGA_colormap, xcmap, ncolors);
+    XSync(DGA_Display, False);
+    UNLOCK_DISPLAY();
+    return (0);
 }
 
-void DGA_VideoQuit(_THIS)
+void
+DGA_VideoQuit(_THIS)
 {
-	int i, j;
+    int i, j;
 
-	if ( DGA_Display ) {
-		/* Free colormap, if necessary */
-		if ( DGA_colormap ) {
-			XFreeColormap(DGA_Display, DGA_colormap);
-			DGA_colormap = 0;
-		}
+    if (DGA_Display) {
+        /* Free colormap, if necessary */
+        if (DGA_colormap) {
+            XFreeColormap(DGA_Display, DGA_colormap);
+            DGA_colormap = 0;
+        }
 
-		/* Unmap memory and reset video mode */
-		SDL_NAME(XDGACloseFramebuffer)(DGA_Display, DGA_Screen);
-		if ( this->screen ) {
-			/* Tell SDL not to free the pixels */
-			DGA_FreeHWSurface(this, this->screen);
-		}
-		SDL_NAME(XDGASetMode)(DGA_Display, DGA_Screen, 0);
+        /* Unmap memory and reset video mode */
+        SDL_NAME(XDGACloseFramebuffer) (DGA_Display, DGA_Screen);
+        if (this->screen) {
+            /* Tell SDL not to free the pixels */
+            DGA_FreeHWSurface(this, this->screen);
+        }
+        SDL_NAME(XDGASetMode) (DGA_Display, DGA_Screen, 0);
 
-		/* Clear the lock mutex */
-		if ( hw_lock != NULL ) {
-			SDL_DestroyMutex(hw_lock);
-			hw_lock = NULL;
-		}
+        /* Clear the lock mutex */
+        if (hw_lock != NULL) {
+            SDL_DestroyMutex(hw_lock);
+            hw_lock = NULL;
+        }
 #ifdef LOCK_DGA_DISPLAY
-		if ( event_lock != NULL ) {
-			SDL_DestroyMutex(event_lock);
-			event_lock = NULL;
-		}
+        if (event_lock != NULL) {
+            SDL_DestroyMutex(event_lock);
+            event_lock = NULL;
+        }
 #endif /* LOCK_DGA_DISPLAY */
 
-		/* Clean up defined video modes */
-		for ( i=0; i<NUM_MODELISTS; ++i ) {
-			if ( SDL_modelist[i] != NULL ) {
-				for ( j=0; SDL_modelist[i][j]; ++j ) {
-					SDL_free(SDL_modelist[i][j]);
-				}
-				SDL_free(SDL_modelist[i]);
-				SDL_modelist[i] = NULL;
-			}
-		}
+        /* Clean up defined video modes */
+        for (i = 0; i < NUM_MODELISTS; ++i) {
+            if (SDL_modelist[i] != NULL) {
+                for (j = 0; SDL_modelist[i][j]; ++j) {
+                    SDL_free(SDL_modelist[i][j]);
+                }
+                SDL_free(SDL_modelist[i]);
+                SDL_modelist[i] = NULL;
+            }
+        }
 
-		/* Clean up the memory bucket list */
-		DGA_FreeHWSurfaces(this);
+        /* Clean up the memory bucket list */
+        DGA_FreeHWSurfaces(this);
+
+        /* Restore DPMS and screensaver settings */
+        X11_RestoreScreenSaver(DGA_Display, screensaver_timeout,
+                               dpms_enabled);
 
-		/* Restore DPMS and screensaver settings */
-		X11_RestoreScreenSaver(DGA_Display, screensaver_timeout, dpms_enabled);
+        /* Close up the display */
+        XCloseDisplay(DGA_Display);
+    }
+}
 
-		/* Close up the display */
-		XCloseDisplay(DGA_Display);
-	}
-}
+/* vi: set ts=4 sw=4 expandtab: */