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-rw-r--r--nx-X11/programs/Xserver/dix/dispatch.c219
1 files changed, 219 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/dix/dispatch.c b/nx-X11/programs/Xserver/dix/dispatch.c
index 438436526..8294a583a 100644
--- a/nx-X11/programs/Xserver/dix/dispatch.c
+++ b/nx-X11/programs/Xserver/dix/dispatch.c
@@ -125,6 +125,8 @@ int ProcInitialConnection();
extern xConnSetupPrefix connSetupPrefix;
extern char *ConnectionInfo;
+extern int screenPrivateCount;
+
Selection *CurrentSelections;
int NumCurrentSelections;
CallbackListPtr SelectionCallback = NULL;
@@ -3976,3 +3978,220 @@ MarkClientException(ClientPtr client)
{
client->noClientException = -1;
}
+
+/*
+ * This array encodes the answer to the question "what is the log base 2
+ * of the number of pixels that fit in a scanline pad unit?"
+ * Note that ~0 is an invalid entry (mostly for the benefit of the reader).
+ */
+static int answer[6][4] = {
+ /* pad pad pad pad*/
+ /* 8 16 32 64 */
+
+ { 3, 4, 5 , 6 }, /* 1 bit per pixel */
+ { 1, 2, 3 , 4 }, /* 4 bits per pixel */
+ { 0, 1, 2 , 3 }, /* 8 bits per pixel */
+ { ~0, 0, 1 , 2 }, /* 16 bits per pixel */
+ { ~0, ~0, 0 , 1 }, /* 24 bits per pixel */
+ { ~0, ~0, 0 , 1 } /* 32 bits per pixel */
+};
+
+/*
+ * This array gives the bytesperPixel value for cases where the number
+ * of bits per pixel is a multiple of 8 but not a power of 2.
+ */
+static int answerBytesPerPixel[ 33 ] = {
+ ~0, 0, ~0, ~0, /* 1 bit per pixel */
+ 0, ~0, ~0, ~0, /* 4 bits per pixel */
+ 0, ~0, ~0, ~0, /* 8 bits per pixel */
+ ~0,~0, ~0, ~0,
+ 0, ~0, ~0, ~0, /* 16 bits per pixel */
+ ~0,~0, ~0, ~0,
+ 3, ~0, ~0, ~0, /* 24 bits per pixel */
+ ~0,~0, ~0, ~0,
+ 0 /* 32 bits per pixel */
+};
+
+/*
+ * This array gives the answer to the question "what is the first index for
+ * the answer array above given the number of bits per pixel?"
+ * Note that ~0 is an invalid entry (mostly for the benefit of the reader).
+ */
+static int indexForBitsPerPixel[ 33 ] = {
+ ~0, 0, ~0, ~0, /* 1 bit per pixel */
+ 1, ~0, ~0, ~0, /* 4 bits per pixel */
+ 2, ~0, ~0, ~0, /* 8 bits per pixel */
+ ~0,~0, ~0, ~0,
+ 3, ~0, ~0, ~0, /* 16 bits per pixel */
+ ~0,~0, ~0, ~0,
+ 4, ~0, ~0, ~0, /* 24 bits per pixel */
+ ~0,~0, ~0, ~0,
+ 5 /* 32 bits per pixel */
+};
+
+/*
+ * This array gives the answer to the question "what is the second index for
+ * the answer array above given the number of bits per scanline pad unit?"
+ * Note that ~0 is an invalid entry (mostly for the benefit of the reader).
+ */
+static int indexForScanlinePad[ 65 ] = {
+ ~0, ~0, ~0, ~0,
+ ~0, ~0, ~0, ~0,
+ 0, ~0, ~0, ~0, /* 8 bits per scanline pad unit */
+ ~0, ~0, ~0, ~0,
+ 1, ~0, ~0, ~0, /* 16 bits per scanline pad unit */
+ ~0, ~0, ~0, ~0,
+ ~0, ~0, ~0, ~0,
+ ~0, ~0, ~0, ~0,
+ 2, ~0, ~0, ~0, /* 32 bits per scanline pad unit */
+ ~0, ~0, ~0, ~0,
+ ~0, ~0, ~0, ~0,
+ ~0, ~0, ~0, ~0,
+ ~0, ~0, ~0, ~0,
+ ~0, ~0, ~0, ~0,
+ ~0, ~0, ~0, ~0,
+ ~0, ~0, ~0, ~0,
+ 3 /* 64 bits per scanline pad unit */
+};
+
+#ifndef MIN
+#define MIN(a,b) (((a) < (b)) ? (a) : (b))
+#endif
+
+static int init_screen(ScreenPtr pScreen, int i)
+{
+ int scanlinepad, format, depth, bitsPerPixel, j, k;
+#ifdef DEBUG
+ void (**jNI) ();
+#endif /* DEBUG */
+
+ pScreen->myNum = i;
+ pScreen->WindowPrivateLen = 0;
+ pScreen->WindowPrivateSizes = (unsigned *)NULL;
+ pScreen->totalWindowSize =
+ ((sizeof(WindowRec) + sizeof(long) - 1) / sizeof(long)) * sizeof(long);
+ pScreen->GCPrivateLen = 0;
+ pScreen->GCPrivateSizes = (unsigned *)NULL;
+ pScreen->totalGCSize =
+ ((sizeof(GC) + sizeof(long) - 1) / sizeof(long)) * sizeof(long);
+#ifdef PIXPRIV
+ pScreen->PixmapPrivateLen = 0;
+ pScreen->PixmapPrivateSizes = (unsigned *)NULL;
+ pScreen->totalPixmapSize = BitmapBytePad(sizeof(PixmapRec)*8);
+#endif
+ pScreen->ClipNotify = 0; /* for R4 ddx compatibility */
+ pScreen->CreateScreenResources = 0;
+
+#ifdef DEBUG
+ for (jNI = &pScreen->QueryBestSize;
+ jNI < (void (**) ()) &pScreen->SendGraphicsExpose;
+ jNI++)
+ *jNI = NotImplemented;
+#endif /* DEBUG */
+
+ /*
+ * This loop gets run once for every Screen that gets added,
+ * but thats ok. If the ddx layer initializes the formats
+ * one at a time calling AddScreen() after each, then each
+ * iteration will make it a little more accurate. Worst case
+ * we do this loop N * numPixmapFormats where N is # of screens.
+ * Anyway, this must be called after InitOutput and before the
+ * screen init routine is called.
+ */
+ for (format=0; format<screenInfo.numPixmapFormats; format++)
+ {
+ depth = screenInfo.formats[format].depth;
+ bitsPerPixel = screenInfo.formats[format].bitsPerPixel;
+ scanlinepad = screenInfo.formats[format].scanlinePad;
+ j = indexForBitsPerPixel[ bitsPerPixel ];
+ k = indexForScanlinePad[ scanlinepad ];
+ PixmapWidthPaddingInfo[ depth ].padPixelsLog2 = answer[j][k];
+ PixmapWidthPaddingInfo[ depth ].padRoundUp =
+ (scanlinepad/bitsPerPixel) - 1;
+ j = indexForBitsPerPixel[ 8 ]; /* bits per byte */
+ PixmapWidthPaddingInfo[ depth ].padBytesLog2 = answer[j][k];
+ PixmapWidthPaddingInfo[ depth ].bitsPerPixel = bitsPerPixel;
+ if (answerBytesPerPixel[bitsPerPixel])
+ {
+ PixmapWidthPaddingInfo[ depth ].notPower2 = 1;
+ PixmapWidthPaddingInfo[ depth ].bytesPerPixel =
+ answerBytesPerPixel[bitsPerPixel];
+ }
+ else
+ {
+ PixmapWidthPaddingInfo[ depth ].notPower2 = 0;
+ }
+ }
+ return 0;
+}
+
+void FreeScreen(ScreenPtr);
+
+/*
+ grow the array of screenRecs if necessary.
+ call the device-supplied initialization procedure
+ with its screen number, a pointer to its ScreenRec, argc, and argv.
+ return the number of successfully installed screens.
+*/
+
+int
+AddScreen(Bool (*pfnInit) (ScreenPtr /*pScreen */ ,
+ int /*argc */ ,
+ char ** /*argv */
+ ), int argc, char **argv)
+{
+
+ int i;
+ ScreenPtr pScreen;
+ Bool ret;
+
+ i = screenInfo.numScreens;
+ if (i == MAXSCREENS)
+ return -1;
+
+ pScreen = (ScreenPtr) calloc(1, sizeof(ScreenRec));
+ if (!pScreen)
+ return -1;
+
+ pScreen->devPrivates = (DevUnion *)calloc(sizeof(DevUnion),
+ screenPrivateCount);
+ if (!pScreen->devPrivates && screenPrivateCount)
+ return -1;
+
+ ret = init_screen(pScreen, i);
+ if (ret != 0) {
+ free(pScreen);
+ return ret;
+ }
+ /* This is where screen specific stuff gets initialized. Load the
+ screen structure, call the hardware, whatever.
+ This is also where the default colormap should be allocated and
+ also pixel values for blackPixel, whitePixel, and the cursor
+ Note that InitScreen is NOT allowed to modify argc, argv, or
+ any of the strings pointed to by argv. They may be passed to
+ multiple screens.
+ */
+ pScreen->rgf = ~0L; /* there are no scratch GCs yet*/
+ screenInfo.screens[i] = pScreen;
+ screenInfo.numScreens++;
+ if (!(*pfnInit)(pScreen, argc, argv))
+ {
+ FreeScreen(pScreen);
+ screenInfo.numScreens--;
+ return -1;
+ }
+ return i;
+}
+
+void
+FreeScreen(ScreenPtr pScreen)
+{
+ pScreen->root = NullWindow;
+ free(pScreen->WindowPrivateSizes);
+ free(pScreen->GCPrivateSizes);
+#ifdef PIXPRIV
+ free(pScreen->PixmapPrivateSizes);
+#endif
+ free(pScreen->devPrivates);
+ free(pScreen);
+}
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