summaryrefslogtreecommitdiff
path: root/hw/xfree86/xaa/xaaBitmap.c
diff options
context:
space:
mode:
Diffstat (limited to 'hw/xfree86/xaa/xaaBitmap.c')
-rw-r--r--hw/xfree86/xaa/xaaBitmap.c475
1 files changed, 475 insertions, 0 deletions
diff --git a/hw/xfree86/xaa/xaaBitmap.c b/hw/xfree86/xaa/xaaBitmap.c
new file mode 100644
index 000000000..9a8749dbf
--- /dev/null
+++ b/hw/xfree86/xaa/xaaBitmap.c
@@ -0,0 +1,475 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/xaa/xaaBitmap.c,v 1.10 2000/09/01 05:49:45 mvojkovi Exp $ */
+
+
+#include "xaa.h"
+#include "xaalocal.h"
+#include "xaacexp.h"
+#include "xf86.h"
+#include "xf86_ansic.h"
+
+
+
+/********** byte swapping ***************/
+
+
+#ifdef FIXEDBASE
+# define DEST(i) *dest
+# define RETURN(i) return(dest)
+#else
+# define DEST(i) dest[i]
+# define RETURN(i) return(dest + i)
+#endif
+
+#ifdef MSBFIRST
+# define SOURCE(i) SWAP_BITS_IN_BYTES(src[i])
+#else
+# define SOURCE(i) src[i]
+#endif
+
+
+typedef CARD32 *(* BitmapScanlineProcPtr)(CARD32 *, CARD32 *, int, int);
+
+#ifdef TRIPLE_BITS
+static CARD32*
+BitmapScanline(
+ CARD32 *src, CARD32 *base,
+ int count, int skipleft )
+{
+ CARD32 bits;
+
+ while(count >= 3) {
+ bits = *src;
+ WRITE_BITS3(bits);
+ src++;
+ count -= 3;
+ }
+ if (count == 2) {
+ bits = *src;
+ WRITE_BITS2(bits);
+ } else if (count == 1) {
+ bits = *src;
+ WRITE_BITS1(bits);
+ }
+
+ return base;
+}
+
+static CARD32*
+BitmapScanline_Inverted(
+ CARD32 *src, CARD32 *base,
+ int count, int skipleft )
+{
+ CARD32 bits;
+
+ while(count >= 3) {
+ bits = ~(*src);
+ WRITE_BITS3(bits);
+ src++;
+ count -= 3;
+ }
+ if (count == 2) {
+ bits = ~(*src);
+ WRITE_BITS2(bits);
+ } else if (count == 1) {
+ bits = ~(*src);
+ WRITE_BITS1(bits);
+ }
+
+ return base;
+}
+
+
+static CARD32*
+BitmapScanline_Shifted(
+ CARD32 *src, CARD32 *base,
+ int count, int skipleft )
+{
+ CARD32 bits;
+
+ while(count >= 3) {
+ bits = SHIFT_R(*src,skipleft) | SHIFT_L(*(src + 1),(32 - skipleft));
+ WRITE_BITS3(bits);
+ src++;
+ count -= 3;
+ }
+ if (count == 2) {
+ bits = SHIFT_R(*src,skipleft) | SHIFT_L(*(src + 1),(32 - skipleft));
+ WRITE_BITS2(bits);
+ } else if (count == 1) {
+ bits = SHIFT_R(*src,skipleft) | SHIFT_L(*(src + 1),(32 - skipleft));
+ WRITE_BITS1(bits);
+ }
+
+ return base;
+}
+
+static CARD32*
+BitmapScanline_Shifted_Inverted(
+ CARD32 *src, CARD32 *base,
+ int count, int skipleft )
+{
+ CARD32 bits;
+
+ while(count >= 3) {
+ bits = ~(SHIFT_R(*src,skipleft) | SHIFT_L(*(src + 1),(32 - skipleft)));
+ WRITE_BITS3(bits);
+ src++;
+ count -= 3;
+ }
+ if (count == 2) {
+ bits = ~(SHIFT_R(*src,skipleft) | SHIFT_L(*(src + 1),(32 - skipleft)));
+ WRITE_BITS2(bits);
+ } else if (count == 1) {
+ bits = ~(SHIFT_R(*src,skipleft) | SHIFT_L(*(src + 1),(32 - skipleft)));
+ WRITE_BITS1(bits);
+ }
+
+ return base;
+}
+
+#define BitmapScanline_Shifted_Careful BitmapScanline_Shifted
+#define BitmapScanline_Shifted_Inverted_Careful BitmapScanline_Shifted_Inverted
+
+#else
+static CARD32*
+BitmapScanline(
+ CARD32 *src, CARD32 *dest,
+ int count, int skipleft )
+{
+ while(count >= 4) {
+ DEST(0) = SOURCE(0);
+ DEST(1) = SOURCE(1);
+ DEST(2) = SOURCE(2);
+ DEST(3) = SOURCE(3);
+ count -= 4;
+ src += 4;
+#ifndef FIXEDBASE
+ dest += 4;
+#endif
+ }
+
+ if(!count) return dest;
+ DEST(0) = SOURCE(0);
+ if(count == 1) RETURN(1);
+ DEST(1) = SOURCE(1);
+ if(count == 2) RETURN(2);
+ DEST(2) = SOURCE(2);
+ RETURN(3);
+}
+
+static CARD32*
+BitmapScanline_Inverted(
+ CARD32 *src, CARD32 *dest,
+ int count, int skipleft )
+{
+ while(count >= 4) {
+ DEST(0) = ~SOURCE(0);
+ DEST(1) = ~SOURCE(1);
+ DEST(2) = ~SOURCE(2);
+ DEST(3) = ~SOURCE(3);
+ count -= 4;
+ src += 4;
+#ifndef FIXEDBASE
+ dest += 4;
+#endif
+ }
+
+ if(!count) return dest;
+ DEST(0) = ~SOURCE(0);
+ if(count == 1) RETURN(1);
+ DEST(1) = ~SOURCE(1);
+ if(count == 2) RETURN(2);
+ DEST(2) = ~SOURCE(2);
+ RETURN(3);
+}
+
+
+static CARD32*
+BitmapScanline_Shifted(
+ CARD32 *bits, CARD32 *base,
+ int count, int skipleft )
+{
+ while(count--) {
+ register CARD32 tmp = SHIFT_R(*bits,skipleft) |
+ SHIFT_L(*(bits + 1),(32 - skipleft));
+ WRITE_BITS(tmp);
+ bits++;
+ }
+ return base;
+}
+
+static CARD32*
+BitmapScanline_Shifted_Inverted(
+ CARD32 *bits, CARD32 *base,
+ int count, int skipleft )
+{
+ while(count--) {
+ register CARD32 tmp = ~(SHIFT_R(*bits,skipleft) |
+ SHIFT_L(*(bits + 1),(32 - skipleft)));
+ WRITE_BITS(tmp);
+ bits++;
+ }
+ return base;
+}
+
+static CARD32*
+BitmapScanline_Shifted_Careful(
+ CARD32 *bits, CARD32 *base,
+ int count, int skipleft )
+{
+ register CARD32 tmp;
+ while(--count) {
+ tmp = SHIFT_R(*bits,skipleft) | SHIFT_L(*(bits + 1),(32 - skipleft));
+ WRITE_BITS(tmp);
+ bits++;
+ }
+ tmp = SHIFT_R(*bits,skipleft);
+ WRITE_BITS(tmp);
+
+ return base;
+}
+
+static CARD32*
+BitmapScanline_Shifted_Inverted_Careful(
+ CARD32 *bits, CARD32 *base,
+ int count, int skipleft )
+{
+ register CARD32 tmp;
+ while(--count) {
+ tmp = ~(SHIFT_R(*bits,skipleft) | SHIFT_L(*(bits + 1),(32 - skipleft)));
+ WRITE_BITS(tmp);
+ bits++;
+ }
+ tmp = ~(SHIFT_R(*bits,skipleft));
+ WRITE_BITS(tmp);
+ return base;
+}
+
+#endif
+
+/*
+ When the accelerator is TRANSPARENCY_ONLY, WriteBitmap can do
+ the fill in two passes, inverting the source on the second pass.
+ For GXcopy we can fill the backing rectangle as a solid rect and
+ avoid the invert.
+*/
+
+void
+#ifdef TRIPLE_BITS
+EXPNAME(XAAWriteBitmapColorExpand3)(
+#else
+EXPNAME(XAAWriteBitmapColorExpand)(
+#endif
+ ScrnInfoPtr pScrn,
+ int x, int y, int w, int H,
+ unsigned char *src,
+ int srcwidth,
+ int skipleft,
+ int fg, int bg,
+ int rop,
+ unsigned int planemask
+)
+{
+ XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn);
+ CARD32* base;
+ unsigned char *srcp = src;
+ int SecondPassColor = -1;
+ int shift = 0, dwords;
+ BitmapScanlineProcPtr firstFunc;
+ BitmapScanlineProcPtr secondFunc;
+ int flag;
+ int h = H;
+
+#ifdef TRIPLE_BITS
+ if((bg != -1) &&
+ ((infoRec->CPUToScreenColorExpandFillFlags & TRANSPARENCY_ONLY) ||
+ ((infoRec->CPUToScreenColorExpandFillFlags & RGB_EQUAL) &&
+ (!CHECK_RGB_EQUAL(bg))))) {
+#else
+ if((bg != -1) &&
+ (infoRec->CPUToScreenColorExpandFillFlags & TRANSPARENCY_ONLY)) {
+#endif
+ if((rop == GXcopy) && infoRec->SetupForSolidFill) {
+ (*infoRec->SetupForSolidFill)(pScrn, bg, rop, planemask);
+ (*infoRec->SubsequentSolidFillRect)(pScrn, x, y, w, h);
+ } else SecondPassColor = bg;
+ bg = -1;
+ }
+
+#ifdef TRIPLE_BITS
+ if(skipleft) {
+#else
+ if(skipleft &&
+ (!(infoRec->CPUToScreenColorExpandFillFlags & LEFT_EDGE_CLIPPING) ||
+ (!(infoRec->CPUToScreenColorExpandFillFlags & LEFT_EDGE_CLIPPING_NEGATIVE_X) &&
+ (skipleft > x)))) {
+#endif
+ if((skipleft + ((w + 31) & ~31)) > ((skipleft + w + 31) & ~31)) {
+ /* don't read past the end */
+ firstFunc = BitmapScanline_Shifted_Careful;
+ secondFunc = BitmapScanline_Shifted_Inverted_Careful;
+ } else {
+ firstFunc = BitmapScanline_Shifted;
+ secondFunc = BitmapScanline_Shifted_Inverted;
+ }
+ shift = skipleft;
+ skipleft = 0;
+ } else {
+ firstFunc = BitmapScanline;
+ secondFunc = BitmapScanline_Inverted;
+ w += skipleft;
+ x -= skipleft;
+ }
+
+#ifdef TRIPLE_BITS
+ dwords = (3 * w + 31) >> 5;
+#else
+ dwords = (w + 31) >> 5;
+#endif
+
+SECOND_PASS:
+
+ flag = (infoRec->CPUToScreenColorExpandFillFlags
+ & CPU_TRANSFER_PAD_QWORD) && ((dwords * h) & 0x01);
+ (*infoRec->SetupForCPUToScreenColorExpandFill)(
+ pScrn, fg, bg, rop, planemask);
+ (*infoRec->SubsequentCPUToScreenColorExpandFill)(
+ pScrn, x, y, w, h, skipleft);
+
+ base = (CARD32*)infoRec->ColorExpandBase;
+
+#ifndef FIXEDBASE
+ if((dwords * h) <= infoRec->ColorExpandRange)
+ while(h--) {
+ base = (*firstFunc)((CARD32*)srcp, base, dwords, shift);
+ srcp += srcwidth;
+ }
+ else
+#endif
+ while(h--) {
+ (*firstFunc)((CARD32*)srcp, base, dwords, shift);
+ srcp += srcwidth;
+ }
+
+ if(flag){
+ base = (CARD32*)infoRec->ColorExpandBase;
+ base[0] = 0x00000000;
+ }
+
+ if(SecondPassColor != -1) {
+ h = H; /* Reset height */
+ fg = SecondPassColor;
+ SecondPassColor = -1;
+ firstFunc = secondFunc;
+ srcp = src;
+ goto SECOND_PASS;
+ }
+
+ if(infoRec->CPUToScreenColorExpandFillFlags & SYNC_AFTER_COLOR_EXPAND)
+ (*infoRec->Sync)(pScrn);
+ else SET_SYNC_FLAG(infoRec);
+}
+
+#ifndef FIXEDBASE
+
+void
+#ifdef TRIPLE_BITS
+EXPNAME(XAAWriteBitmapScanlineColorExpand3)(
+#else
+EXPNAME(XAAWriteBitmapScanlineColorExpand)(
+#endif
+ ScrnInfoPtr pScrn,
+ int x, int y, int w, int h,
+ unsigned char *src,
+ int srcwidth,
+ int skipleft,
+ int fg, int bg,
+ int rop,
+ unsigned int planemask
+)
+{
+ XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn);
+ CARD32* base;
+ unsigned char *srcp = src;
+ int SecondPassColor = -1;
+ int shift = 0, dwords, bufferNo;
+ BitmapScanlineProcPtr firstFunc;
+ BitmapScanlineProcPtr secondFunc;
+
+#ifdef TRIPLE_BITS
+ if((bg != -1) &&
+ ((infoRec->ScanlineCPUToScreenColorExpandFillFlags & TRANSPARENCY_ONLY)
+ || ((infoRec->ScanlineCPUToScreenColorExpandFillFlags & RGB_EQUAL) &&
+ (!CHECK_RGB_EQUAL(bg))))) {
+#else
+ if((bg != -1) &&
+ (infoRec->ScanlineCPUToScreenColorExpandFillFlags & TRANSPARENCY_ONLY)){
+#endif
+ if((rop == GXcopy) && infoRec->SetupForSolidFill) {
+ (*infoRec->SetupForSolidFill)(pScrn, bg, rop, planemask);
+ (*infoRec->SubsequentSolidFillRect)(pScrn, x, y, w, h);
+ } else SecondPassColor = bg;
+ bg = -1;
+ }
+
+#ifdef TRIPLE_BITS
+ if(skipleft) {
+#else
+ if(skipleft &&
+ (!(infoRec->ScanlineCPUToScreenColorExpandFillFlags &
+ LEFT_EDGE_CLIPPING) ||
+ (!(infoRec->ScanlineCPUToScreenColorExpandFillFlags &
+ LEFT_EDGE_CLIPPING_NEGATIVE_X) && (skipleft > x)))) {
+#endif
+ if((skipleft + ((w + 31) & ~31)) > ((skipleft + w + 31) & ~31)) {
+ /* don't read past the end */
+ firstFunc = BitmapScanline_Shifted_Careful;
+ secondFunc = BitmapScanline_Shifted_Inverted_Careful;
+ } else {
+ firstFunc = BitmapScanline_Shifted;
+ secondFunc = BitmapScanline_Shifted_Inverted;
+ }
+ shift = skipleft;
+ skipleft = 0;
+ } else {
+ firstFunc = BitmapScanline;
+ secondFunc = BitmapScanline_Inverted;
+ w += skipleft;
+ x -= skipleft;
+ }
+
+#ifdef TRIPLE_BITS
+ dwords = (3 * w + 31) >> 5;
+#else
+ dwords = (w + 31) >> 5;
+#endif
+
+SECOND_PASS:
+
+ (*infoRec->SetupForScanlineCPUToScreenColorExpandFill)(pScrn, fg, bg, rop, planemask);
+ (*infoRec->SubsequentScanlineCPUToScreenColorExpandFill)(
+ pScrn, x, y, w, h, skipleft);
+
+ bufferNo = 0;
+
+ while(h--) {
+ base = (CARD32*)infoRec->ScanlineColorExpandBuffers[bufferNo];
+ (*firstFunc)((CARD32*)srcp, base, dwords, shift);
+ (*infoRec->SubsequentColorExpandScanline)(pScrn, bufferNo++);
+ srcp += srcwidth;
+ if(bufferNo >= infoRec->NumScanlineColorExpandBuffers)
+ bufferNo = 0;
+ }
+
+ if(SecondPassColor != -1) {
+ fg = SecondPassColor;
+ SecondPassColor = -1;
+ firstFunc = secondFunc;
+ srcp = src;
+ goto SECOND_PASS;
+ }
+
+ SET_SYNC_FLAG(infoRec);
+}
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-27 12:40:13 +0000