diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/video/dga/SDL_dgavideo.c')
| -rw-r--r-- | distrib/sdl-1.2.12/src/video/dga/SDL_dgavideo.c | 1100 |
1 files changed, 0 insertions, 1100 deletions
diff --git a/distrib/sdl-1.2.12/src/video/dga/SDL_dgavideo.c b/distrib/sdl-1.2.12/src/video/dga/SDL_dgavideo.c deleted file mode 100644 index 331fcd2..0000000 --- a/distrib/sdl-1.2.12/src/video/dga/SDL_dgavideo.c +++ /dev/null @@ -1,1100 +0,0 @@ -/* - SDL - Simple DirectMedia Layer - Copyright (C) 1997-2006 Sam Lantinga - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - This library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, write to the Free Software - Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - - Sam Lantinga - slouken@libsdl.org -*/ -#include "SDL_config.h" - -/* DGA 2.0 based SDL video driver implementation. -*/ - -#include <stdio.h> - -#include <X11/Xlib.h> -#include "../Xext/extensions/xf86dga.h" - -#include "SDL_video.h" -#include "SDL_mouse.h" -#include "../SDL_sysvideo.h" -#include "../SDL_pixels_c.h" -#include "../../events/SDL_events_c.h" -#include "SDL_dgavideo.h" -#include "SDL_dgamouse_c.h" -#include "SDL_dgaevents_c.h" - -/* get function pointers... */ -#include "../x11/SDL_x11dyn.h" - -/*#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); - -/* 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_SetColors(_THIS, int firstcolor, int ncolors, - 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 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); - -/* DGA driver bootstrap functions */ - -static int DGA_Available(void) -{ - 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; - - 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); -} - -static void DGA_DeleteDevice(SDL_VideoDevice *device) -{ - if (device != NULL) { - SDL_free(device->hidden); - SDL_free(device); - SDL_X11_UnloadSymbols(); - } -} - -static SDL_VideoDevice *DGA_CreateDevice(int devindex) -{ - 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)); - - /* 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; - } - - return device; -} - -VideoBootStrap DGA_bootstrap = { - "dga", "XFree86 DGA 2.0", - DGA_Available, DGA_CreateDevice -}; - -static int DGA_AddMode(_THIS, int bpp, int w, int h) -{ - 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); - } - } - - /* 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]++; - - return(0); -} - -/* This whole function is a hack. :) */ -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; - - 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) -{ - 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) -{ - 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) ) { - /* 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 ) { - return b_bpp - a_bpp; - } - /* Prefer DirectColor visuals, for gamma support */ - if ( a->visualClass == DirectColor && b->visualClass != DirectColor ) - return -1; - 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 ) { - return b->viewportHeight - a->viewportHeight; - } else { - return b->viewportWidth - a->viewportWidth; - } -} -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); -} - -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; - - /* 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); - } - - /* 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 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; - } - - /* 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); - - /* 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]); -#endif - 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); - } - -#ifdef LOCK_DGA_DISPLAY - /* Create the event lock so we're thread-safe.. :-/ */ - event_lock = SDL_CreateMutex(); -#endif /* LOCK_DGA_DISPLAY */ - - /* We're done! */ - return(0); -} - -SDL_Rect **DGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) -{ - return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]); -} - -/* Various screen update functions available */ -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_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; - } - - /* 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); - } -#ifdef DGA_DEBUG - 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 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); - - /* 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); - - /* 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); - - /* 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; - - /* 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); -} - -#ifdef DGA_DEBUG -static void DGA_DumpHWSurfaces(_THIS) -{ - 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"); -} -#endif - -static int DGA_InitHWSurfaces(_THIS, SDL_Surface *screen, Uint8 *base, int size) -{ - vidmem_bucket *bucket; - - 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; - } - - 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) -{ - vidmem_bucket *bucket, *freeable; - - bucket = surfaces.next; - while ( bucket ) { - freeable = bucket; - bucket = bucket->next; - SDL_free(freeable); - } - surfaces.next = NULL; -} - -static __inline__ void DGA_AddBusySurface(SDL_Surface *surface) -{ - ((vidmem_bucket *)surface->hwdata)->dirty = 1; -} - -static __inline__ int DGA_IsSurfaceBusy(SDL_Surface *surface) -{ - return ((vidmem_bucket *)surface->hwdata)->dirty; -} - -static __inline__ void DGA_WaitBusySurfaces(_THIS) -{ - vidmem_bucket *bucket; - - /* 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; - } -} - -static int DGA_AllocHWSurface(_THIS, SDL_Surface *surface) -{ - 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; -#ifdef DGA_DEBUG - fprintf(stderr, "Allocating bucket of %d bytes\n", size); -#endif - LOCK_DISPLAY(); - - /* 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; - } - - /* 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); -#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; - } - - /* 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); -#endif - 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) -{ - vidmem_bucket *bucket, *freeable; - - /* 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 */ -#ifdef DGA_DEBUG - printf("Freeing bucket of %d bytes\n", bucket->size); -#endif - surfaces_memleft += bucket->size; - - /* 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); -#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 ) { -#ifdef DGA_DEBUG - 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; -} - -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; -} - -static int DGA_FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color) -{ - 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; -#if 0 - 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); -} - -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; - - 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); -#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); -} - -static int DGA_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst) -{ - int accelerated; - - /* 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; - } - } - - /* 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) -{ - 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) -{ - 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) -{ - if ( surface == this->screen ) { - SDL_mutexV(hw_lock); - } -} - -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; - - surface->pixels = flip_address[flip_page]; - return(0); -} - -static void DGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects) -{ - /* The application is already updating the visible video memory */ - return; -} - -static int DGA_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) -{ - 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); - - /* That was easy. :) */ - return(1); -} - -int DGA_SetGammaRamp(_THIS, Uint16 *ramp) -{ - 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); - } - - /* 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) -{ - int i, j; - - 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); - - /* 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; - } -#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 the memory bucket list */ - DGA_FreeHWSurfaces(this); - - /* Restore DPMS and screensaver settings */ - X11_RestoreScreenSaver(DGA_Display, screensaver_timeout, dpms_enabled); - - /* Close up the display */ - XCloseDisplay(DGA_Display); - } -} |