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Diffstat (limited to 'hw/xfree86/xf4bpp/vgaBitBlt.c')
-rw-r--r--hw/xfree86/xf4bpp/vgaBitBlt.c763
1 files changed, 763 insertions, 0 deletions
diff --git a/hw/xfree86/xf4bpp/vgaBitBlt.c b/hw/xfree86/xf4bpp/vgaBitBlt.c
new file mode 100644
index 000000000..53eb3b314
--- /dev/null
+++ b/hw/xfree86/xf4bpp/vgaBitBlt.c
@@ -0,0 +1,763 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/xf4bpp/vgaBitBlt.c,v 1.4 2002/01/25 21:56:22 tsi Exp $ */
+/* GJA -- span move routines */
+
+
+
+/* $XConsortium: vgaBitBlt.c /main/8 1996/10/27 11:06:39 kaleb $ */
+
+#include "xf4bpp.h"
+#include "OScompiler.h"
+#include "vgaReg.h"
+#include "vgaVideo.h"
+
+#include "xf86str.h" /* for pScrn->vtSema */
+extern ScrnInfoPtr *xf86Screens;
+
+#ifndef PC98_EGC /* not PC98_EGC */
+/* NOTE: It seems that there is no way to program the VGA to copy just
+ * a part of a byte in the smarter modes. Therefore we copy the boundaries
+ * plane by plane.
+ */
+#define WORDSZ 8
+ /* The fast blit code requires WORDSZ = 8 for its read-modify write cycle.
+ * Therefore, we do not fully implement the other options.
+ */
+#define HIGHPLANEMASK 0x08
+#define HIGHPLANEINDEX 3
+
+/* Of course, we want the following anyway:
+ * (Yes, they're identical now.)
+ */
+#define SMEM(x,y) ( VIDBASE(pWin) + (y) * BYTES_PER_LINE(pWin) + (x) )
+#define DMEM(x,y) ( VIDBASE(pWin) + (y) * BYTES_PER_LINE(pWin) + (x) )
+
+#define WORD8 unsigned char
+#define LW8 BYTES_PER_LINE(pWin) /* Line width */
+#define WSHIFT8 0x3
+#define WMASK8 0x07
+/* NOTE: lmask[8] matters. It must be different from lmask[0] */
+static unsigned char lmasktab[] = {
+ 0x00, 0x80, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC, 0xFE, 0xFF
+} ;
+static unsigned char rmasktab[] = {
+ 0xFF, 0x7F, 0x3F, 0x1F, 0x0F, 0x07, 0x03, 0x01, 0x00
+} ;
+
+#define LMASK8(n) lmasktab[n]
+#define RMASK8(n) rmasktab[n]
+#define SWAPB8(x) (x)
+
+#if (WORDSZ == 8)
+
+#define WORD WORD8
+#define LW LW8
+#define WSHIFT WSHIFT8
+#define WMASK WMASK8
+
+#define LMASK(n) LMASK8(n)
+#define RMASK(n) RMASK8(n)
+#define SWAPB(x) SWAPB8(x)
+
+#endif /* WORDSZ == 8 */
+
+#define DO_ALU(dst,src,mask,alu) {\
+ int _ndst, _odst; _odst = dst; \
+ switch ( alu ) { \
+ case GXclear: \
+ _ndst = 0; break; \
+ case GXand: \
+ _ndst = src & _odst; break; \
+ case GXandReverse: \
+ _ndst = src & ~ _odst; break; \
+ case GXcopy: \
+ _ndst = src; break; \
+ case GXandInverted: \
+ _ndst = ~ src & _odst; break; \
+ default: \
+ case GXnoop: \
+ _ndst = _odst; break; \
+ case GXxor: \
+ _ndst = src ^ _odst; break; \
+ case GXor: \
+ _ndst = src | _odst; break; \
+ case GXnor: \
+ _ndst = ~ src & ~ _odst; break; \
+ case GXequiv: \
+ _ndst = ~ src ^ _odst; break; \
+ case GXinvert: \
+ _ndst = ~ _odst; break; \
+ case GXorReverse: \
+ _ndst = src | ~ _odst; break; \
+ case GXcopyInverted: \
+ _ndst = ~ src; break; \
+ case GXorInverted: \
+ _ndst = ~ src | _odst; break; \
+ case GXnand: \
+ _ndst = ~ src | ~ _odst; break; \
+ case GXset: \
+ _ndst = ~0; break; \
+ } \
+ dst = (_odst & ~(mask)) | (_ndst & (mask)); \
+ }
+
+static void aligned_blit(
+#if NeedFunctionPrototypes
+ WindowPtr, int, int, int, int, int, int, int, int
+#endif
+);
+
+static void aligned_blit_center(
+#if NeedFunctionPrototypes
+ WindowPtr, int, int, int, int, int, int
+#endif
+);
+
+static void shift(
+#if NeedFunctionPrototypes
+ WindowPtr, int, int, int, int, int, int, int
+#endif
+);
+
+static void shift_thin_rect(
+#if NeedFunctionPrototypes
+ WindowPtr, int, int, int, int, int, int, int
+#endif
+);
+
+static void shift_center(
+#if NeedFunctionPrototypes
+ WindowPtr, int, int, int, int, int, int, int
+#endif
+);
+
+void xf4bppBitBlt(pWin,alu,writeplanes,x0,y0,x1,y1,w,h)
+WindowPtr pWin; /* GJA */
+int alu;
+int writeplanes; /* planes */
+int x0, y0, x1, y1, w, h;
+{
+ IOADDRESS REGBASE;
+ int plane, bit;
+
+ if ( !w || !h ) return;
+
+ if ( ! xf86Screens[((DrawablePtr)pWin)->pScreen->myNum]->vtSema ) {
+ xf4bppOffBitBlt(pWin,alu,writeplanes,x0,y0,x1,y1,w,h);
+ return;
+ }
+
+ REGBASE =
+ xf86Screens[((DrawablePtr)pWin)->pScreen->myNum]->domainIOBase + 0x300;
+
+ /* 0x7, not WMASK: it is hardware dependant */
+ if ( ((x0 - x1) & 0x7) || (alu != GXcopy) ) {
+ /* Use slow copy */
+ SetVideoGraphics(Enb_Set_ResetIndex, 0); /* All from CPU */
+ SetVideoGraphics(Bit_MaskIndex, 0xFF); /* All bits */
+ SetVideoGraphics(Graphics_ModeIndex, 0); /* Write mode 0 */
+ SetVideoGraphics(Data_RotateIndex, 0); /* Don't rotate, replace */
+
+ for ( plane = HIGHPLANEMASK, bit = HIGHPLANEINDEX ;
+ plane ; plane >>= 1, bit-- )
+ {
+
+ if ( writeplanes & plane) {
+ SetVideoGraphics(Read_Map_SelectIndex, bit);
+ SetVideoSequencer(Mask_MapIndex, plane);
+
+ shift(pWin,x0,x1,y0,y1,w,h,alu);
+ }
+ }
+ } else {
+ aligned_blit(pWin,x0,x1,y0,y1,w,h,alu,writeplanes);
+ }
+}
+
+/* Copy a span a number of places to the right.
+ */
+static void
+shift(pWin,x0,x1,y0,y1,w,h,alu)
+WindowPtr pWin; /* GJA */
+int x0; /* left edge of source */
+int x1; /* left edge of target */
+int y0;
+int y1;
+int w; /* length of source, and of target */
+int h;
+int alu;
+{
+ if ( ((x1 & WMASK) + w) <= WORDSZ ) {
+ shift_thin_rect(pWin,x0,x1,y0,y1,w,h,alu);
+ } else if ( x1 > x0 ) { /* Shift right: start right */
+ int l1 = x1 & WMASK, r1 = (x1 + w) & WMASK;
+
+ if ( r1 ) /* right edge */
+ shift_thin_rect(pWin,x0+w-r1,x1+w-r1,y0,y1,r1,h,alu);
+ shift_center(pWin,x0,x1,y0,y1,w,h,alu);
+ if ( l1 ) /* left edge */
+ shift_thin_rect(pWin,x0,x1,y0,y1,(WORDSZ-l1),h,alu);
+ } else {
+ int l1 = x1 & WMASK, r1 = (x1 + w) & WMASK;
+
+ if ( l1 ) /* left edge */
+ shift_thin_rect(pWin,x0,x1,y0,y1,(WORDSZ-l1),h,alu);
+ shift_center(pWin,x0,x1,y0,y1,w,h,alu);
+ if ( r1 ) /* right edge */
+ shift_thin_rect(pWin,x0+w-r1,x1+w-r1,y0,y1,r1,h,alu);
+ }
+}
+
+/* The whole rectangle is so thin that it fits in one byte written */
+static void
+shift_thin_rect(pWin,x0,x1,y0,y1,w,h,alu)
+WindowPtr pWin; /* GJA */
+int x0; /* left edge of source */
+int x1; /* left edge of target */
+int y0;
+int y1;
+int w; /* length of source, and of target */
+int h;
+int alu;
+{
+ int l0 = x0 & WMASK; /* Left edge of source, as bit */
+ int l1 = x1 & WMASK; /* Left edge of target, as bit */
+ int L0 = x0 >> WSHIFT; /* Left edge of source, as byte */
+ int L1 = x1 >> WSHIFT; /* Left edge of target, as byte */
+ int pad;
+ int htmp;
+ int mask;
+ int tmp;
+ int bs;
+
+ volatile unsigned char *sp, *dp;
+
+ mask = RMASK(l1) & LMASK(l1+w);
+ bs = (x1 - x0) & WMASK;
+
+ if ( y1 > y0 ) { /* Move down, start at the bottom */
+ pad = - BYTES_PER_LINE(pWin);
+ sp = SMEM(L0,y0+h-1);
+ dp = DMEM(L1,y1+h-1);
+ } else { /* Move up, start at the top */
+ pad = BYTES_PER_LINE(pWin);
+ sp = SMEM(L0,y0);
+ dp = DMEM(L1,y1);
+ }
+
+ if ( l0+w > WORDSZ ) {
+ /* Need two bytes */
+ for ( htmp = h ; htmp ; htmp-- ) {
+ tmp = (sp[0] << (WORDSZ - bs));
+ sp++;
+ tmp |= (sp[0] >> bs);
+ sp--;
+ DO_ALU(dp[0],tmp,mask,alu);
+ dp += pad;
+ sp += pad;
+ }
+ } else if ( l0 <= l1 ) {
+ /* Need one byte, shifted right */
+ for ( htmp = h ; htmp ; htmp-- ) {
+ tmp = (sp[0] >> bs);
+ DO_ALU(dp[0],tmp,mask,alu);
+ dp += pad;
+ sp += pad;
+ }
+ } else {
+ /* Need one byte, shifted left */
+ for ( htmp = h ; htmp ; htmp-- ) {
+ tmp = (sp[0] << (WORDSZ - bs));
+ DO_ALU(dp[0],tmp,mask,alu);
+ dp += pad;
+ sp += pad;
+ }
+ }
+}
+
+static void
+shift_center(pWin,x0,x1,y0,y1,w,h,alu)
+WindowPtr pWin; /* GJA */
+int x0; /* left edge of source */
+int x1; /* left edge of target */
+int y0;
+int y1;
+int w; /* length of source, and of target */
+int h;
+int alu;
+{
+ int l1 = x1 & WMASK; /* Left edge of target, as bit */
+ int r1 = (x1 + w) & WMASK; /* Right edge of target, as bit */
+ int pad;
+ int htmp, wtmp; /* Temporaries for indices over height and width */
+ volatile unsigned char tmp; /* Temporary result of the shifts */
+ int bs;
+ int rem; /* Remaining bits; temporary in loop */
+ int bytecnt;
+
+ volatile unsigned char *sp, *dp;
+
+ bs = (x1 - x0) & WMASK;
+
+ if ( l1 ) {
+ bytecnt = (w - (WORDSZ - l1) - r1) >> WSHIFT;
+ sp = SMEM( ((x0 + (WORDSZ - l1)) >> WSHIFT), y0);
+ dp = DMEM( ((x1 + (WORDSZ - l1)) >> WSHIFT), y1);
+ } else {
+ bytecnt = (w - r1) >> WSHIFT;
+ sp = SMEM( (x0 >> WSHIFT), y0);
+ dp = DMEM( (x1 >> WSHIFT), y1);
+ }
+
+ if ( y1 > y0 ) { /* Move down, start at the bottom */
+ if ( x1 > x0 ) { /* Move right, start right */
+ pad = - BYTES_PER_LINE(pWin) + bytecnt;
+ sp += BYTES_PER_LINE(pWin) * (h - 1) + bytecnt - 1;
+ dp += BYTES_PER_LINE(pWin) * (h - 1) + bytecnt - 1;
+ } else { /* Move left, start left */
+ pad = - BYTES_PER_LINE(pWin) - bytecnt;
+ sp += BYTES_PER_LINE(pWin) * (h - 1);
+ dp += BYTES_PER_LINE(pWin) * (h - 1);
+ }
+ } else { /* Move up, start at the top */
+ if ( x1 > x0 ) { /* Move right, start right */
+ pad = BYTES_PER_LINE(pWin) + bytecnt;
+ sp += bytecnt - 1;
+ dp += bytecnt - 1;
+ } else { /* Move left, start left */
+ pad = BYTES_PER_LINE(pWin) - bytecnt;
+ sp += 0;
+ dp += 0;
+ }
+ }
+
+ if ( x1 > x0 ) { /* Move right, start right */
+ if ( bs == 0 ) { /* No shift. Need one byte only */
+ for ( htmp = h ; htmp ; htmp-- ) {
+ for ( wtmp = bytecnt ; wtmp ; wtmp-- ) {
+ tmp = sp[0];
+ DO_ALU(dp[0],tmp,~0,alu);
+ dp--;
+ sp--;
+ }
+ dp += pad;
+ sp += pad;
+ }
+ } else {
+ for ( htmp = h ; htmp ; htmp-- ) {
+ if ( bytecnt ) {
+ sp++;
+ rem = sp[0];
+ sp--;
+ for ( wtmp = bytecnt ; wtmp ; wtmp-- ) {
+ tmp = (rem >> bs);
+ rem = sp[0];
+ tmp |= (rem << (WORDSZ - bs)) ;
+ DO_ALU(dp[0],tmp,~0,alu);
+ dp--;
+ sp--;
+ }
+ }
+ dp += pad;
+ sp += pad;
+ }
+ }
+ } else { /* x1 <= x0 */ /* Move left, start left */
+ if ( bs == 0 ) { /* No shift. Need one byte only */
+ for ( htmp = h ; htmp ; htmp-- ) {
+ for ( wtmp = bytecnt ; wtmp ; wtmp-- ) {
+ tmp = sp[0];
+ DO_ALU(dp[0],tmp,~0,alu);
+ dp++;
+ sp++;
+ }
+ dp += pad;
+ sp += pad;
+ }
+ } else {
+ for ( htmp = h ; htmp ; htmp-- ) {
+ if ( bytecnt ) {
+ rem = sp[0];
+ for ( wtmp = bytecnt ; wtmp ; wtmp-- ) {
+ tmp = (rem << (WORDSZ - bs));
+ sp++;
+ rem = sp[0];
+ sp--;
+ tmp |= (rem >> bs);
+ DO_ALU(dp[0],tmp,~0,alu);
+ dp++;
+ sp++;
+ }
+ }
+ dp += pad;
+ sp += pad;
+ }
+ }
+ }
+}
+
+/* Copy a rectangle.
+ */
+static void
+aligned_blit(pWin,x0,x1,y0,y1,w,h,alu,planes)
+WindowPtr pWin; /* GJA */
+int x0; /* left edge of source */
+int x1; /* left edge of target */
+int y0;
+int y1;
+int w; /* length of source, and of target */
+int h;
+int alu;
+int planes;
+{
+ IOADDRESS REGBASE =
+ xf86Screens[((DrawablePtr)pWin)->pScreen->myNum]->domainIOBase + 0x300;
+ int plane, bit;
+
+ if ( ((x1 & WMASK) + w) <= WORDSZ ) {
+ SetVideoGraphics(Enb_Set_ResetIndex, 0); /* All from CPU */
+ SetVideoGraphics(Bit_MaskIndex, 0xFF); /* All bits */
+ SetVideoGraphics(Graphics_ModeIndex, 0); /* Write mode 0 */
+ SetVideoGraphics(Data_RotateIndex, 0); /* Don't rotate, replace */
+
+ for ( plane = HIGHPLANEMASK, bit = HIGHPLANEINDEX;
+ plane ; plane >>= 1, bit-- )
+ {
+ if ( planes & plane) {
+ SetVideoGraphics(Read_Map_SelectIndex, bit);
+ SetVideoSequencer(Mask_MapIndex, plane);
+
+ shift_thin_rect(pWin,x0,x1,y0,y1,w,h,alu);
+ }
+ }
+ } else if ( x1 > x0 ) { /* Shift right: start right */
+ int l1 = x1 & WMASK, r1 = (x1 + w) & WMASK;
+
+ if ( r1 ) { /* right edge */
+ SetVideoGraphics(Enb_Set_ResetIndex, 0); /* All from CPU */
+ SetVideoGraphics(Bit_MaskIndex, 0xFF); /* All bits */
+ SetVideoGraphics(Graphics_ModeIndex, 0); /* Write mode 0 */
+ SetVideoGraphics(Data_RotateIndex, 0); /* Don't rotate, replace */
+
+ for ( plane = HIGHPLANEMASK, bit = HIGHPLANEINDEX;
+ plane ; plane >>= 1, bit-- )
+ {
+ if ( planes & plane) {
+ SetVideoGraphics(Read_Map_SelectIndex, bit);
+ SetVideoSequencer(Mask_MapIndex, plane);
+
+ shift_thin_rect(pWin,x0+w-r1,x1+w-r1,y0,y1,r1,h,alu);
+ }
+ }
+ }
+
+ /* Center */
+ SetVideoGraphics(Graphics_ModeIndex, 1); /* Write mode 1 */
+ SetVideoSequencer(Mask_MapIndex, planes);
+
+ aligned_blit_center(pWin,x0,x1,y0,y1,w,h);
+
+ if ( l1 ) { /* left edge */
+ SetVideoGraphics(Enb_Set_ResetIndex, 0); /* All from CPU */
+ SetVideoGraphics(Bit_MaskIndex, 0xFF); /* All bits */
+ SetVideoGraphics(Graphics_ModeIndex, 0); /* Write mode 0 */
+ SetVideoGraphics(Data_RotateIndex, 0); /* Don't rotate, replace */
+
+ for ( plane = HIGHPLANEMASK, bit = HIGHPLANEINDEX;
+ plane ; plane >>= 1, bit-- )
+ {
+ if ( planes & plane) {
+ SetVideoGraphics(Read_Map_SelectIndex, bit);
+ SetVideoSequencer(Mask_MapIndex, plane);
+
+ shift_thin_rect(pWin,x0,x1,y0,y1,(WORDSZ-l1),h,alu);
+ }
+ }
+ }
+ } else {
+ int l1 = x1 & WMASK, r1 = (x1 + w) & WMASK;
+
+ if ( l1 ) { /* left edge */
+ SetVideoGraphics(Enb_Set_ResetIndex, 0); /* All from CPU */
+ SetVideoGraphics(Bit_MaskIndex, 0xFF); /* All bits */
+ SetVideoGraphics(Graphics_ModeIndex, 0); /* Write mode 0 */
+ SetVideoGraphics(Data_RotateIndex, 0); /* Don't rotate, replace */
+
+ for ( plane = HIGHPLANEMASK, bit = HIGHPLANEINDEX;
+ plane ; plane >>= 1, bit-- )
+ {
+ if ( planes & plane) {
+ SetVideoGraphics(Read_Map_SelectIndex, bit);
+ SetVideoSequencer(Mask_MapIndex, plane);
+
+ shift_thin_rect(pWin,x0,x1,y0,y1,(WORDSZ-l1),h,alu);
+ }
+ }
+ }
+
+ /* Center */
+ SetVideoGraphics(Graphics_ModeIndex, 1); /* Write mode 1 */
+ SetVideoSequencer(Mask_MapIndex, planes);
+
+ aligned_blit_center(pWin,x0,x1,y0,y1,w,h);
+
+ if ( r1 ) { /* right edge */
+ SetVideoGraphics(Enb_Set_ResetIndex, 0); /* All from CPU */
+ SetVideoGraphics(Bit_MaskIndex, 0xFF); /* All bits */
+ SetVideoGraphics(Graphics_ModeIndex, 0); /* Write mode 0 */
+ SetVideoGraphics(Data_RotateIndex, 0); /* Don't rotate, replace */
+
+ for ( plane = HIGHPLANEMASK, bit = HIGHPLANEINDEX ;
+ plane ; plane >>= 1, bit-- )
+ {
+ if ( planes & plane) {
+ SetVideoGraphics(Read_Map_SelectIndex, bit);
+ SetVideoSequencer(Mask_MapIndex, plane);
+
+ shift_thin_rect(pWin,x0+w-r1,x1+w-r1,y0,y1,r1,h,alu);
+ }
+ }
+ }
+ }
+}
+
+static void
+aligned_blit_center(pWin,x0,x1,y0,y1,w,h)
+WindowPtr pWin; /* GJA */
+int x0; /* left edge of source */
+int x1; /* left edge of target */
+int y0;
+int y1;
+int w; /* length of source, and of target */
+int h;
+{
+ int l1 = x1 & WMASK; /* Left edge of target, as bit */
+ int r1 = (x1 + w) & WMASK; /* Right edge of target, as bit */
+ int pad;
+ int htmp, wtmp; /* Temporaries for indices over height and width */
+ volatile unsigned char tmp; /* Temporary result of the shifts */
+ int bs;
+ int bytecnt;
+
+ volatile unsigned char *sp, *dp;
+
+ bs = (x1 - x0) & WMASK;
+
+ if ( l1 ) {
+ bytecnt = (w - (WORDSZ - l1) - r1) >> WSHIFT;
+ sp = SMEM( ((x0 + (WORDSZ - l1)) >> WSHIFT), y0);
+ dp = DMEM( ((x1 + (WORDSZ - l1)) >> WSHIFT), y1);
+ } else {
+ bytecnt = (w - r1) >> WSHIFT;
+ sp = SMEM( (x0 >> WSHIFT), y0);
+ dp = DMEM( (x1 >> WSHIFT), y1);
+ }
+
+ if ( y1 > y0 ) { /* Move down, start at the bottom */
+ if ( x1 > x0 ) { /* Move right, start right */
+ pad = - BYTES_PER_LINE(pWin) + bytecnt;
+ sp += BYTES_PER_LINE(pWin) * (h - 1) + bytecnt - 1;
+ dp += BYTES_PER_LINE(pWin) * (h - 1) + bytecnt - 1;
+ } else { /* Move left, start left */
+ pad = - BYTES_PER_LINE(pWin) - bytecnt;
+ sp += BYTES_PER_LINE(pWin) * (h - 1);
+ dp += BYTES_PER_LINE(pWin) * (h - 1);
+ }
+ } else { /* Move up, start at the top */
+ if ( x1 > x0 ) { /* Move right, start right */
+ pad = BYTES_PER_LINE(pWin) + bytecnt;
+ sp += bytecnt - 1;
+ dp += bytecnt - 1;
+ } else { /* Move left, start left */
+ pad = BYTES_PER_LINE(pWin) - bytecnt;
+ sp += 0;
+ dp += 0;
+ }
+ }
+
+ if ( x1 > x0 ) { /* Move right, start right */
+ for ( htmp = h ; htmp ; htmp-- ) {
+ for ( wtmp = bytecnt ; wtmp ; wtmp-- ) {
+ tmp = sp[0];
+ dp[0] = tmp;
+ dp--;
+ sp--;
+ }
+ dp += pad;
+ sp += pad;
+ }
+ } else { /* x1 <= x0 */ /* Move left, start left */
+ for ( htmp = h ; htmp ; htmp-- ) {
+ for ( wtmp = bytecnt ; wtmp ; wtmp-- ) {
+ tmp = sp[0];
+ dp[0] = tmp;
+ dp++;
+ sp++;
+ }
+ dp += pad;
+ sp += pad;
+ }
+ }
+}
+#else /* PC98_EGC */
+
+static void
+egc_fast_blt (pWin, alu, writeplanes, x0, y0, x1, y1, w, h)
+WindowPtr pWin;
+const int alu, writeplanes ;
+register int x0, x1 ;
+int y0, y1 ;
+register int w, h ;
+{
+register volatile unsigned char *src ;
+register volatile unsigned char *dst ;
+unsigned short *src_x ;
+unsigned short *dst_x ;
+int x_direction, y_interval ;
+int src_off, dst_off ;
+register int k, i ;
+unsigned short ROP_value;
+
+src = (unsigned char *)SCREENADDRESS( pWin, 0, y0);
+dst = (unsigned char *)SCREENADDRESS( pWin, 0, y1);
+
+/* Set Map Mask */
+outw(EGC_PLANE, ~(writeplanes & VGA_ALLPLANES));
+switch(alu) {
+case GXnor: /* ~(S|D) */
+ ROP_value = 0x2903;
+ break;
+case GXandInverted: /* ~S&D */
+ ROP_value = 0x290c;
+ break;
+case GXand: /* S&D */
+ ROP_value = 0x29c0;
+ break;
+case GXequiv: /* ~S ^ D */
+ ROP_value = 0x29c3;
+ break;
+case GXxor: /* S^D */
+ ROP_value = 0x293c;
+ break;
+case GXandReverse: /* S&~D */
+ ROP_value = 0x2930;
+ break;
+case GXorReverse: /* S|~D */
+ ROP_value = 0x29f3;
+ break;
+case GXnand: /* ~(S&D) */
+ ROP_value = 0x293f;
+ break;
+case GXorInverted: /* ~S|D */
+ ROP_value = 0x29cf;
+ break;
+case GXor: /* S|D */
+ ROP_value = 0x29fa;
+ break;
+case GXcopyInverted: /* ~S */
+ ROP_value = 0x290f;
+ break;
+case GXcopy: /* S */
+default:
+ ROP_value = 0x29f0;
+}
+outw(EGC_MODE, ROP_value);
+if ( y1 > y0 ) {
+ y_interval = - BYTES_PER_LINE(pWin) * 8 ;
+ src += BYTES_PER_LINE(pWin) * ( h - 1 ) ;
+ dst += BYTES_PER_LINE(pWin) * ( h - 1 ) ;
+}
+else {
+ y_interval = BYTES_PER_LINE(pWin) * 8 ;
+}
+
+src = (unsigned char *)((int)src << 3) ;
+dst = (unsigned char *)((int)dst << 3) ;
+
+if ( y1 > y0) {
+ x_direction = 0x1000 ;
+ src += x0 + w - 1 ;
+ dst += x1 + w - 1 ;
+} else if ( y1 < y0 ) {
+ x_direction = 0 ;
+ src += x0 ;
+ dst += x1 ;
+} else {
+ if ( x1 < x0 ) {
+ x_direction = 0 ;
+ src += x0 ;
+ dst += x1 ;
+ } else {
+ x_direction = 0x1000 ;
+ src += x0 + w - 1 ;
+ dst += x1 + w - 1 ;
+ }
+}
+ outw ( EGC_LENGTH , w - 1 ) ;
+
+for ( ; h-- ; ) {
+ if ( x_direction ) {
+ src_off = 15 - (int)src & 0xf ;
+ dst_off = 15 - (int)dst & 0xf ;
+ } else {
+ src_off = (int)src & 0xf ;
+ dst_off = (int)dst & 0xf ;
+ }
+#if defined(__NetBSD__) || defined(__OpenBSD__)
+ src_x = (unsigned short *)(((unsigned int)src >> 4 ) << 1) ;
+ dst_x = (unsigned short *)(((unsigned int)dst >> 4 ) << 1) ;
+#else
+ src_x = (unsigned short *)(((int)src >> 4 ) << 1) ;
+ dst_x = (unsigned short *)(((int)dst >> 4 ) << 1) ;
+#endif
+ k = ( src_off + w + 15 ) >> 4 ;
+ if ( src_off < dst_off ) {
+ if ( ((src_off + w - 1 ) >> 4) < ((dst_off + w - 1) >> 4)) k++ ;
+ }
+ if ( src_off > dst_off ) {
+ if ( ((src_off + w - 1) >> 4 ) == ((dst_off + w - 1) >> 4) ) k++ ;
+ if ( x_direction ) dst_x ++ ;
+ else dst_x -- ;
+ }
+ outw ( EGC_ADD , x_direction | src_off | dst_off << 4 );
+ if ( x_direction ) {
+ wcopyl ( src_x, dst_x, k, VIDBASE(pWin) ) ;
+ } else {
+ wcopyr ( src_x, dst_x, k, VIDBASE(pWin) ) ;
+ }
+src += y_interval ;
+dst += y_interval ;
+}
+outw ( EGC_ADD, 0 ) ;
+outw ( EGC_LENGTH , 0xf );
+return;
+}
+
+void
+xf4bppBitBlt( pWin,alu, writeplanes, x0, y0, x1, y1, w, h )
+WindowPtr pWin; /* GJA */
+int alu;
+int writeplanes; /* planes */
+int x0, y0, x1, y1, w, h;
+{
+ if ( ! xf86Screens[((DrawablePtr)pWin)->pScreen->myNum]->vtSema ) {
+ xf4bppOffBitBlt( pWin, alu, writeplanes,
+ x0, y0, x1, y1, w, h );
+ return;
+ }
+
+switch ( alu ) {
+ case GXclear: /* 0x0 Zero 0 */
+ case GXinvert: /* 0xa NOT dst */
+ case GXset: /* 0xf 1 */
+ xf4bppFillSolid( pWin, VGA_ALLPLANES, alu, writeplanes, x1, y1, w, h ) ;
+ /* x1, y1, GJA */
+ case GXnoop: /* 0x5 dst */
+ return ;
+ default:
+ break ;
+}
+
+egc_fast_blt ( pWin, alu, writeplanes, x0, y0, x1, y1, w, h);
+return;
+}
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-27 12:35:25 +0000