This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_cgximage.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2006 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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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
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Lesser General Public License for more details.
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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
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Sam Lantinga
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slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#include "SDL_endian.h"
#include "SDL_cgximage_c.h"
#ifdef HAVE_KSTAT
#include <kstat.h>
#endif
#ifdef USE_CGX_WRITELUTPIXEL
#if defined(__SASC) || defined(__PPC__)
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#define WLUT WriteLUTPixelArray
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#else
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void
WLUT (APTR a, UWORD b, UWORD c, UWORD d, struct RastPort *e, APTR f, UWORD g,
UWORD h, UWORD i, UWORD l, UBYTE m)
{
WriteLUTPixelArray (a, b, c, d, e, f, g, h, i, l, m);
}
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#endif
#endif
/* Various screen update functions available */
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static void CGX_NormalUpdate (_THIS, int numrects, SDL_Rect * rects);
static void CGX_FakeUpdate (_THIS, int numrects, SDL_Rect * rects);
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BOOL SafeDisp = TRUE, SafeChange = TRUE;
struct MsgPort *safeport = NULL, *dispport = NULL;
ULONG safe_sigbit, disp_sigbit;
int use_picasso96 = 1;
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int
CGX_SetupImage (_THIS, SDL_Surface * screen)
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SDL_Ximage = NULL;
if (screen->flags & SDL_HWSURFACE) {
ULONG pitch;
if (!screen->hwdata) {
if (!
(screen->hwdata =
SDL_malloc (sizeof (struct private_hwdata))))
return -1;
D (bug ("Creating system accel struct\n"));
}
screen->hwdata->lock = NULL;
screen->hwdata->allocated = 0;
screen->hwdata->mask = NULL;
screen->hwdata->bmap = SDL_RastPort->BitMap;
screen->hwdata->videodata = this;
if (!(screen->hwdata->lock = LockBitMapTags (screen->hwdata->bmap,
LBMI_BASEADDRESS,
(ULONG) & screen->
pixels,
LBMI_BYTESPERROW,
(ULONG) & pitch,
TAG_DONE))) {
SDL_free (screen->hwdata);
screen->hwdata = NULL;
return -1;
} else {
UnLockBitMap (screen->hwdata->lock);
screen->hwdata->lock = NULL;
}
screen->pitch = pitch;
this->UpdateRects = CGX_FakeUpdate;
D (bug
("Accel video image configured (%lx, pitch %ld).\n",
screen->pixels, screen->pitch));
return 0;
}
screen->pixels = SDL_malloc (screen->h * screen->pitch);
if (screen->pixels == NULL) {
SDL_OutOfMemory ();
return (-1);
}
SDL_Ximage = screen->pixels;
if (SDL_Ximage == NULL) {
SDL_SetError ("Couldn't create XImage");
return (-1);
}
this->UpdateRects = CGX_NormalUpdate;
return (0);
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}
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void
CGX_DestroyImage (_THIS, SDL_Surface * screen)
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{
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if (SDL_Ximage) {
SDL_free (SDL_Ximage);
SDL_Ximage = NULL;
}
if (screen) {
screen->pixels = NULL;
if (screen->hwdata) {
SDL_free (screen->hwdata);
screen->hwdata = NULL;
}
}
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}
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/* This is a hack to see whether this system has more than 1 CPU */
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static int
num_CPU (void)
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int
CGX_ResizeImage (_THIS, SDL_Surface * screen, Uint32 flags)
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{
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int retval;
D (bug ("Calling ResizeImage()\n"));
CGX_DestroyImage (this, screen);
if (flags & SDL_INTERNALOPENGL) { /* No image when using GL */
retval = 0;
} else {
retval = CGX_SetupImage (this, screen);
/* We support asynchronous blitting on the display */
if (flags & SDL_ASYNCBLIT) {
if (num_CPU () > 1) {
screen->flags |= SDL_ASYNCBLIT;
}
}
}
return (retval);
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}
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int
CGX_AllocHWSurface (_THIS, SDL_Surface * surface)
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{
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D (bug
("Alloc HW surface...%ld x %ld x %ld!\n", surface->w, surface->h,
this->hidden->depth));
if (surface == SDL_VideoSurface) {
D (bug ("Allocation skipped, it's system one!\n"));
return 0;
}
if (!surface->hwdata) {
if (!(surface->hwdata = SDL_malloc (sizeof (struct private_hwdata))))
return -1;
}
surface->hwdata->mask = NULL;
surface->hwdata->lock = NULL;
surface->hwdata->videodata = this;
surface->hwdata->allocated = 0;
if (surface->hwdata->bmap =
AllocBitMap (surface->w, surface->h, this->hidden->depth,
BMF_MINPLANES, SDL_Display->RastPort.BitMap)) {
surface->hwdata->allocated = 1;
surface->flags |= SDL_HWSURFACE;
D (bug ("...OK\n"));
return 0;
} else {
SDL_free (surface->hwdata);
surface->hwdata = NULL;
}
return (-1);
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}
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void
CGX_FreeHWSurface (_THIS, SDL_Surface * surface)
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{
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if (surface && surface != SDL_VideoSurface && surface->hwdata) {
D (bug ("Free hw surface.\n"));
if (surface->hwdata->mask)
SDL_free (surface->hwdata->mask);
if (surface->hwdata->bmap && surface->hwdata->allocated)
FreeBitMap (surface->hwdata->bmap);
SDL_free (surface->hwdata);
surface->hwdata = NULL;
surface->pixels = NULL;
D (bug ("end of free hw surface\n"));
}
return;
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}
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int
CGX_LockHWSurface (_THIS, SDL_Surface * surface)
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{
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if (surface->hwdata) {
// D(bug("Locking a bitmap...\n"));
if (!surface->hwdata->lock) {
Uint32 pitch;
if (!
(surface->hwdata->lock =
LockBitMapTags (surface->hwdata->bmap, LBMI_BASEADDRESS,
(ULONG) & surface->pixels,
LBMI_BYTESPERROW, (ULONG) & pitch,
TAG_DONE)))
return -1;
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// surface->pitch e' a 16bit!
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surface->pitch = pitch;
if (!currently_fullscreen && surface == SDL_VideoSurface)
surface->pixels =
((char *) surface->pixels) +
(surface->pitch *
(SDL_Window->BorderTop + SDL_Window->TopEdge) +
surface->format->BytesPerPixel *
(SDL_Window->BorderLeft + SDL_Window->LeftEdge));
}
D (
else
bug ("Already locked!!!\n"));
}
return (0);
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}
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void
CGX_UnlockHWSurface (_THIS, SDL_Surface * surface)
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{
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if (surface->hwdata && surface->hwdata->lock) {
UnLockBitMap (surface->hwdata->lock);
surface->hwdata->lock = NULL;
// surface->pixels=NULL;
}
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}
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int
CGX_FlipHWSurface (_THIS, SDL_Surface * surface)
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{
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static int current = 0;
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if (this->hidden->dbuffer) {
if (!SafeChange) {
Wait (disp_sigbit);
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// Non faccio nulla, vuoto solo la porta
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while (GetMsg (dispport) != NULL);
SafeChange = TRUE;
}
if (ChangeScreenBuffer (SDL_Display, this->hidden->SB[current ^ 1])) {
surface->hwdata->bmap = SDL_RastPort->BitMap =
this->hidden->SB[current]->sb_BitMap;
SafeChange = FALSE;
SafeDisp = FALSE;
current ^= 1;
}
if (!SafeDisp) {
Wait (safe_sigbit);
while (GetMsg (safeport) != NULL);
SafeDisp = TRUE;
}
}
return (0);
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}
/* Byte-swap the pixels in the display image */
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static void
CGX_SwapAllPixels (SDL_Surface * screen)
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{
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int x, y;
switch (screen->format->BytesPerPixel) {
case 2:
{
Uint16 *spot;
for (y = 0; y < screen->h; ++y) {
spot = (Uint16 *) ((Uint8 *) screen->pixels +
y * screen->pitch);
for (x = 0; x < screen->w; ++x, ++spot) {
*spot = SDL_Swap16 (*spot);
}
}
}
break;
case 4:
{
Uint32 *spot;
for (y = 0; y < screen->h; ++y) {
spot = (Uint32 *) ((Uint8 *) screen->pixels +
y * screen->pitch);
for (x = 0; x < screen->w; ++x, ++spot) {
*spot = SDL_Swap32 (*spot);
}
}
}
break;
default:
/* should never get here */
break;
}
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}
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static void
CGX_SwapPixels (SDL_Surface * screen, int numrects, SDL_Rect * rects)
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{
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int i;
int x, minx, maxx;
int y, miny, maxy;
switch (screen->format->BytesPerPixel) {
case 2:
{
Uint16 *spot;
for (i = 0; i < numrects; ++i) {
minx = rects[i].x;
maxx = rects[i].x + rects[i].w;
miny = rects[i].y;
maxy = rects[i].y + rects[i].h;
for (y = miny; y < maxy; ++y) {
spot = (Uint16 *) ((Uint8 *) screen->pixels +
y * screen->pitch + minx * 2);
for (x = minx; x < maxx; ++x, ++spot) {
*spot = SDL_Swap16 (*spot);
}
}
}
}
break;
case 4:
{
Uint32 *spot;
for (i = 0; i < numrects; ++i) {
minx = rects[i].x;
maxx = rects[i].x + rects[i].w;
miny = rects[i].y;
maxy = rects[i].y + rects[i].h;
for (y = miny; y < maxy; ++y) {
spot = (Uint32 *) ((Uint8 *) screen->pixels +
y * screen->pitch + minx * 4);
for (x = minx; x < maxx; ++x, ++spot) {
*spot = SDL_Swap32 (*spot);
}
}
}
}
break;
default:
/* should never get here */
break;
}
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}
#ifdef __SASC
#define USE_WPA WritePixelArray
#else
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void
USE_WPA (char *a, int b, int c, int d, struct RastPort *e, int f, int g,
int h, int i, Uint32 l)
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{
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WritePixelArray (a, b, c, d, e, f, g, h, i, l);
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}
#endif
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static void
CGX_FakeUpdate (_THIS, int numrects, SDL_Rect * rects)
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{
}
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static void
CGX_NormalUpdate (_THIS, int numrects, SDL_Rect * rects)
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{
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int i, format, customroutine = 0;
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#ifndef USE_CGX_WRITELUTPIXEL
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#endif
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if (this->hidden->same_format && !use_picasso96) {
format = RECTFMT_RAW;
} else
switch (this->screen->format->BytesPerPixel) {
case 4:
format = RECTFMT_RGBA;
break;
case 3:
format = RECTFMT_RGB;
break;
case 2:
customroutine = 1;
break;
case 1:
// D(bug("soft depth: 8 hardbpp: %ld\n",this->hidden->depth));
if (this->hidden->depth > 8) {
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#ifndef USE_CGX_WRITELUTPIXEL
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if (this->hidden->depth > 32)
customroutine = 4;
else if (this->hidden->depth > 16) {
bpp = this->hidden->BytesPerPixel; // That one is the only one that needs bpp
customroutine = 2; // The slow one!
} else
customroutine = 3;
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#else
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customroutine = 2;
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#endif
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// format=RECTFMT_LUT8; Vecchia funzione x usare la WritePixelArray.
} else
customroutine = 1;
break;
default:
D (bug ("Unable to blit this surface!\n"));
return;
}
/* Check for endian-swapped X server, swap if necessary (VERY slow!) */
if (swap_pixels && ((this->screen->format->BytesPerPixel % 2) == 0)) {
D (bug ("Software Swapping! SLOOOW!\n"));
CGX_SwapPixels (this->screen, numrects, rects);
for (i = 0; i < numrects; ++i) {
if (!rects[i].w) { /* Clipped? */
continue;
}
USE_WPA (this->screen->pixels, rects[i].x, rects[i].y,
this->screen->pitch, SDL_RastPort,
SDL_Window->BorderLeft + rects[i].x,
SDL_Window->BorderTop + rects[i].y, rects[i].w,
rects[i].h, format);
}
CGX_SwapPixels (this->screen, numrects, rects);
} else if (customroutine == 2) {
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#ifdef USE_CGX_WRITELUTPIXEL
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for (i = 0; i < numrects; ++i) {
if (!rects[i].w) { /* Clipped? */
continue;
}
WLUT (this->screen->pixels, rects[i].x, rects[i].y,
this->screen->pitch, SDL_RastPort, SDL_XPixels,
SDL_Window->BorderLeft + rects[i].x,
SDL_Window->BorderTop + rects[i].y, rects[i].w,
rects[i].h, CTABFMT_XRGB8);
}
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#else
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unsigned char *bm_address;
Uint32 destpitch;
APTR handle;
if (handle =
LockBitMapTags (SDL_RastPort->BitMap, LBMI_BASEADDRESS,
&bm_address, LBMI_BYTESPERROW, &destpitch,
TAG_DONE)) {
int srcwidth;
unsigned char *destbase;
register int j, k, t;
register unsigned char *mask, *dst;
register unsigned char *src, *dest;
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// Aggiungo il bordo della finestra se sono fullscreen.
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if (currently_fullscreen)
destbase = bm_address;
else
destbase =
bm_address + (SDL_Window->TopEdge +
SDL_Window->BorderTop) * destpitch +
(SDL_Window->BorderLeft +
SDL_Window->LeftEdge) * this->hidden->BytesPerPixel;
for (i = 0; i < numrects; ++i) {
srcwidth = rects[i].w;
if (!srcwidth) { /* Clipped? */
continue;
}
dest = destbase + rects[i].x * this->hidden->BytesPerPixel;
dest += (rects[i].y * destpitch);
src = ((char *) (this->screen->pixels)) + rects[i].x;
src += (rects[i].y * this->screen->pitch);
for (j = rects[i].h; j; --j) {
dst = dest;
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// SLOW routine, used for 8->24 bit mapping
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for (k = 0; k < srcwidth; k++) {
mask = (unsigned char *) (&SDL_XPixels[src[k]]);
for (t = 0; t < bpp; t++) {
dst[t] = mask[t];
}
dst += bpp;
}
src += this->screen->pitch;
dest += destpitch;
}
}
UnLockBitMap (handle);
}
} else if (customroutine == 3) {
unsigned char *bm_address;
Uint32 destpitch;
APTR handle;
if (handle =
LockBitMapTags (SDL_RastPort->BitMap, LBMI_BASEADDRESS,
&bm_address, LBMI_BYTESPERROW, &destpitch,
TAG_DONE)) {
int srcwidth;
unsigned char *destbase;
register int j, k;
register unsigned char *src, *dest;
register Uint16 *destl, *srcl;
if (currently_fullscreen)
destbase = bm_address;
else
destbase =
bm_address + (SDL_Window->TopEdge +
SDL_Window->BorderTop) * destpitch +
(SDL_Window->BorderLeft +
SDL_Window->LeftEdge) * this->hidden->BytesPerPixel;
for (i = 0; i < numrects; ++i) {
srcwidth = rects[i].w;
if (!srcwidth) { /* Clipped? */
continue;
}
dest = destbase + rects[i].x * this->hidden->BytesPerPixel;
dest += (rects[i].y * destpitch);
src = ((char *) (this->screen->pixels)) + rects[i].x;
src += (rects[i].y * this->screen->pitch);
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// This is the fast, well not too slow, remapping code for 16bit displays
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for (j = rects[i].h; j; --j) {
destl = (Uint16 *) dest;
for (k = 0; k < srcwidth; k++) {
srcl = (Uint16 *) & SDL_XPixels[src[k]];
*destl = *srcl;
destl++;
}
src += this->screen->pitch;
dest += destpitch;
}
}
UnLockBitMap (handle);
}
} else if (customroutine == 4) {
unsigned char *bm_address;
Uint32 destpitch;
APTR handle;
if (handle =
LockBitMapTags (SDL_RastPort->BitMap, LBMI_BASEADDRESS,
&bm_address, LBMI_BYTESPERROW, &destpitch,
TAG_DONE)) {
int srcwidth;
unsigned char *destbase;
register int j, k;
register unsigned char *src, *dest;
register Uint32 *destl, *srcl;
if (currently_fullscreen)
destbase = bm_address;
else
destbase =
bm_address + (SDL_Window->TopEdge +
SDL_Window->BorderTop) * destpitch +
(SDL_Window->BorderLeft +
SDL_Window->LeftEdge) * this->hidden->BytesPerPixel;
for (i = 0; i < numrects; ++i) {
srcwidth = rects[i].w;
if (!srcwidth) { /* Clipped? */
continue;
}
dest = destbase + rects[i].x * this->hidden->BytesPerPixel;
dest += (rects[i].y * destpitch);
src = ((char *) (this->screen->pixels)) + rects[i].x;
src += (rects[i].y * this->screen->pitch);
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// This is the fast, well not too slow, remapping code for 32bit displays
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for (j = rects[i].h; j; --j) {
destl = (Uint32 *) dest;
for (k = 0; k < srcwidth; k++) {
srcl = (Uint32 *) & SDL_XPixels[src[k]];
*destl = *srcl;
destl++;
}
src += this->screen->pitch;
dest += destpitch;
}
}
UnLockBitMap (handle);
}
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#endif
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} else if (customroutine) {
unsigned char *bm_address;
Uint32 destpitch;
APTR handle;
// D(bug("Using customroutine!\n"));
if (handle =
LockBitMapTags (SDL_RastPort->BitMap, LBMI_BASEADDRESS,
(ULONG) & bm_address, LBMI_BYTESPERROW,
(ULONG) & destpitch, TAG_DONE)) {
unsigned char *destbase;
register int j, srcwidth;
register unsigned char *src, *dest;
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// Aggiungo il bordo della finestra se sono fullscreen.
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if (currently_fullscreen)
destbase = bm_address;
else
destbase =
bm_address + (SDL_Window->TopEdge +
SDL_Window->BorderTop) * destpitch +
(SDL_Window->BorderLeft +
SDL_Window->LeftEdge) *
this->screen->format->BytesPerPixel;
for (i = 0; i < numrects; ++i) {
srcwidth = rects[i].w;
if (!srcwidth) { /* Clipped? */
continue;
}
dest =
destbase +
rects[i].x * this->screen->format->BytesPerPixel;
dest += (rects[i].y * destpitch);
src =
((char *) (this->screen->pixels)) +
rects[i].x * this->screen->format->BytesPerPixel;
src += (rects[i].y * this->screen->pitch);
srcwidth *= this->screen->format->BytesPerPixel;
// D(bug("Rects: %ld,%ld %ld,%ld Src:%lx Dest:%lx\n",rects[i].x,rects[i].y,rects[i].w,rects[i].h,src,dest));
for (j = rects[i].h; j; --j) {
SDL_memcpy (dest, src, srcwidth);
src += this->screen->pitch;
dest += destpitch;
}
}
UnLockBitMap (handle);
// D(bug("Rectblit addr: %lx pitch: %ld rects:%ld srcptr: %lx srcpitch: %ld\n",bm_address,destpitch,numrects,this->screen->pixels,this->screen->pitch));
}
} else {
for (i = 0; i < numrects; ++i) {
if (!rects[i].w) { /* Clipped? */
continue;
}
USE_WPA (this->screen->pixels, rects[i].x, rects[i].y,
this->screen->pitch, SDL_RastPort,
SDL_Window->BorderLeft + rects[i].x,
SDL_Window->BorderTop + rects[i].y, rects[i].w,
rects[i].h, format);
}
}
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}
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void
CGX_RefreshDisplay (_THIS)
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{
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int format, customroutine = 0;
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#ifndef USE_CGX_WRITELUTPIXEL
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#endif
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/* Don't refresh a display that doesn't have an image (like GL) */
if (!SDL_Ximage) {
return;
}
if (this->hidden->same_format && !use_picasso96) {
format = RECTFMT_RAW;
} else
switch (this->screen->format->BytesPerPixel) {
case 4:
format = RECTFMT_RGBA;
break;
case 3:
format = RECTFMT_RGB;
break;
case 2:
customroutine = 1;
break;
case 1:
// D(bug("soft depth: 8 hardbpp: %ld\n",this->hidden->depth));
if (this->hidden->depth > 8) {
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#ifndef USE_CGX_WRITELUTPIXEL
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if (this->hidden->depth > 32)
customroutine = 4;
else if (this->hidden->depth > 16) {
bpp = this->hidden->BytesPerPixel; // That one is the only one that needs bpp
customroutine = 2; // The slow one!
} else
customroutine = 3;
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#else
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customroutine = 2;
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#endif
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// format=RECTFMT_LUT8;
} else
customroutine = 1;
break;
}
/* Check for endian-swapped X server, swap if necessary */
if (swap_pixels && ((this->screen->format->BytesPerPixel % 2) == 0)) {
CGX_SwapAllPixels (this->screen);
USE_WPA (this->screen->pixels, 0, 0, this->screen->pitch,
SDL_RastPort, SDL_Window->BorderLeft,
SDL_Window->BorderTop, this->screen->w, this->screen->h,
format);
CGX_SwapAllPixels (this->screen);
} else if (customroutine == 2) {
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#ifdef USE_CGX_WRITELUTPIXEL
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WLUT (this->screen->pixels, 0, 0, this->screen->pitch,
SDL_RastPort, SDL_XPixels, SDL_Window->BorderLeft,
SDL_Window->BorderTop, this->screen->w, this->screen->h,
CTABFMT_XRGB8);
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#else
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unsigned char *bm_address;
Uint32 destpitch;
APTR handle;
if (handle =
LockBitMapTags (SDL_RastPort->BitMap, LBMI_BASEADDRESS,
(ULONG) & bm_address, LBMI_BYTESPERROW,
(ULONG) & destpitch, TAG_DONE)) {
register int j, k, t;
register unsigned char *mask, *dst;
register unsigned char *src, *dest;
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// Aggiungo il bordo della finestra se sono fullscreen.
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if (!currently_fullscreen)
dest =
bm_address + (SDL_Window->TopEdge +
SDL_Window->BorderTop) * destpitch +
(SDL_Window->BorderLeft +
SDL_Window->LeftEdge) * this->hidden->BytesPerPixel;
else
dest = bm_address;
src = this->screen->pixels;
for (j = this->screen->h; j; --j) {
dst = dest;
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// SLOW routine, used for 8->24 bit mapping
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for (k = 0; k < this->screen->w; k++) {
mask = (unsigned char *) (&SDL_XPixels[src[k]]);
for (t = 0; t < bpp; t++) {
dst[t] = mask[t];
}
dst += bpp;
}
src += this->screen->pitch;
dest += destpitch;
}
UnLockBitMap (handle);
}
} else if (customroutine == 3) {
unsigned char *bm_address;
Uint32 destpitch;
APTR handle;
if (handle =
LockBitMapTags (SDL_RastPort->BitMap, LBMI_BASEADDRESS,
(ULONG) & bm_address, LBMI_BYTESPERROW,
(ULONG) & destpitch, TAG_DONE)) {
register int j, k;
register unsigned char *src, *dest;
register Uint16 *destl, *srcl;
if (!currently_fullscreen)
dest =
bm_address + (SDL_Window->TopEdge +
SDL_Window->BorderTop) * destpitch +
(SDL_Window->BorderLeft +
SDL_Window->LeftEdge) * this->hidden->BytesPerPixel;
else
dest = bm_address;
src = this->screen->pixels;
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// This is the fast, well not too slow, remapping code for 16bit displays
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for (j = this->screen->h; j; --j) {
destl = (Uint16 *) dest;
for (k = 0; k < this->screen->w; k++) {
srcl = (Uint16 *) & SDL_XPixels[src[k]];
*destl = *srcl;
destl++;
}
src += this->screen->pitch;
dest += destpitch;
}
UnLockBitMap (handle);
}
} else if (customroutine == 4) {
unsigned char *bm_address;
Uint32 destpitch;
APTR handle;
if (handle =
LockBitMapTags (SDL_RastPort->BitMap, LBMI_BASEADDRESS,
(ULONG) & bm_address, LBMI_BYTESPERROW,
(ULONG) & destpitch, TAG_DONE)) {
register int j, k;
register unsigned char *src, *dest;
register Uint32 *destl, *srcl;
if (!currently_fullscreen)
dest =
bm_address + (SDL_Window->TopEdge +
SDL_Window->BorderTop) * destpitch +
(SDL_Window->BorderLeft +
SDL_Window->LeftEdge) * this->hidden->BytesPerPixel;
else
dest = bm_address;
src = this->screen->pixels;
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// This is the fast, well not too slow, remapping code for 32bit displays
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for (j = this->screen->h; j; --j) {
destl = (Uint32 *) dest;
for (k = 0; k < this->screen->w; k++) {
srcl = (Uint32 *) & SDL_XPixels[src[k]];
*destl = *srcl;
destl++;
}
src += this->screen->pitch;
dest += destpitch;
}
UnLockBitMap (handle);
}
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#endif
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} else if (customroutine) {
unsigned char *bm_address;
Uint32 destpitch;
APTR handle;
if (handle = LockBitMapTags (SDL_RastPort->BitMap,
LBMI_BASEADDRESS, (ULONG) & bm_address,
LBMI_BYTESPERROW, (ULONG) & destpitch,
TAG_DONE)) {
register int j;
register unsigned char *src, *dest;
if (!currently_fullscreen)
dest =
bm_address + (SDL_Window->TopEdge +
SDL_Window->BorderTop) * destpitch +
(SDL_Window->BorderLeft +
SDL_Window->LeftEdge) *
this->screen->format->BytesPerPixel;
else
dest = bm_address;
src = this->screen->pixels;
// D(bug("addr: %lx pitch: %ld src:%lx srcpitch: %ld\n",dest,destpitch,this->screen->pixels,this->screen->pitch));
if (this->screen->pitch == destpitch) {
SDL_memcpy (dest, src, this->screen->pitch * this->screen->h);
} else {
for (j = this->screen->h; j; --j) {
SDL_memcpy (dest, src, this->screen->pitch);
src += this->screen->pitch;
dest += destpitch;
}
}
UnLockBitMap (handle);
}
} else {
USE_WPA (this->screen->pixels, 0, 0, this->screen->pitch,
SDL_RastPort, SDL_Window->BorderLeft,
SDL_Window->BorderTop, this->screen->w, this->screen->h,
format);
}
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}
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/* vi: set ts=4 sw=4 expandtab: */