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-rw-r--r--xorg-server/hw/xfree86/xaa/xaaTEText.c312
1 files changed, 312 insertions, 0 deletions
diff --git a/xorg-server/hw/xfree86/xaa/xaaTEText.c b/xorg-server/hw/xfree86/xaa/xaaTEText.c
new file mode 100644
index 000000000..fc445726f
--- /dev/null
+++ b/xorg-server/hw/xfree86/xaa/xaaTEText.c
@@ -0,0 +1,312 @@
+
+/********************************************************************
+
+ In this file we have GC level replacements for PolyText8/16,
+ ImageText8/16, ImageGlyphBlt and PolyGlyphBlt for TE (fixed) fonts.
+ The idea is that everything in this file is device independent.
+ The mentioned GCOps are merely wrappers for XAAGlyphBltTEColorExpansion
+ which calculates the boxes containing arbitrarily clipped text
+ and passes them to the TEGlyphRenderer which will usually be a lower
+ level XAA function which renders these clipped glyphs using
+ the basic color expansion functions exported by the chipset driver.
+ The TEGlyphRenderer itself may optionally be driver supplied to
+ facilitate work-arounds/optimizations at a higher level than usual.
+
+ v1.0 - Mark Vojkovich (mvojkovi@ucsd.edu)
+
+
+********************************************************************/
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include "misc.h"
+#include "xf86.h"
+#include "xf86_OSproc.h"
+
+#include <X11/X.h>
+#include <X11/fonts/font.h>
+#include "scrnintstr.h"
+#include "dixfontstr.h"
+#include "xf86str.h"
+#include "xaa.h"
+#include "xaalocal.h"
+#include "gcstruct.h"
+#include "pixmapstr.h"
+
+
+static void XAAGlyphBltTEColorExpansion(ScrnInfoPtr pScrn, int xInit,
+ int yInit, FontPtr font, int fg, int bg, int rop,
+ unsigned int planemask, RegionPtr cclip, int nglyph,
+ unsigned char* gBase, CharInfoPtr *ppci);
+
+
+/********************************************************************
+
+ GC level replacements for PolyText8/16 and ImageText8/16
+ for TE fonts when using color expansion.
+
+********************************************************************/
+
+
+int
+XAAPolyText8TEColorExpansion(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int x, int y,
+ int count,
+ char *chars )
+{
+ XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
+ unsigned long n;
+
+ (*pGC->font->get_glyphs)(pGC->font, (unsigned long)count,
+ (unsigned char *)chars, Linear8Bit, &n, infoRec->CharInfo);
+
+ /* we have divorced XAAGlyphBltTEColorExpansion from the drawable */
+ if(n) XAAGlyphBltTEColorExpansion(
+ infoRec->pScrn, x + pDraw->x, y + pDraw->y,
+ pGC->font, pGC->fgPixel, -1, pGC->alu, pGC->planemask,
+ pGC->pCompositeClip, n, FONTGLYPHS(pGC->font), infoRec->CharInfo);
+
+ return (x + (n * FONTMAXBOUNDS(pGC->font, characterWidth)));
+}
+
+
+int
+XAAPolyText16TEColorExpansion(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int x, int y,
+ int count,
+ unsigned short *chars )
+{
+ XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
+ unsigned long n;
+
+ (*pGC->font->get_glyphs)(
+ pGC->font, (unsigned long)count, (unsigned char *)chars,
+ (FONTLASTROW(pGC->font) == 0) ? Linear16Bit : TwoD16Bit,
+ &n, infoRec->CharInfo);
+
+ if(n) XAAGlyphBltTEColorExpansion(
+ infoRec->pScrn, x + pDraw->x, y + pDraw->y,
+ pGC->font, pGC->fgPixel, -1, pGC->alu, pGC->planemask,
+ pGC->pCompositeClip, n, FONTGLYPHS(pGC->font), infoRec->CharInfo);
+
+ return (x + (n * FONTMAXBOUNDS(pGC->font, characterWidth)));
+}
+
+
+void
+XAAImageText8TEColorExpansion(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int x, int y,
+ int count,
+ char *chars )
+{
+ XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
+ unsigned long n;
+
+ if(!REGION_NUM_RECTS(pGC->pCompositeClip))
+ return;
+
+ (*pGC->font->get_glyphs)(pGC->font, (unsigned long)count,
+ (unsigned char *)chars, Linear8Bit, &n, infoRec->CharInfo);
+
+ if(n) XAAGlyphBltTEColorExpansion(
+ infoRec->pScrn, x + pDraw->x, y + pDraw->y,
+ pGC->font, pGC->fgPixel, pGC->bgPixel, GXcopy, pGC->planemask,
+ pGC->pCompositeClip, n, FONTGLYPHS(pGC->font), infoRec->CharInfo);
+}
+
+
+void
+XAAImageText16TEColorExpansion(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int x, int y,
+ int count,
+ unsigned short *chars )
+{
+ XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
+ unsigned long n;
+
+ if(!REGION_NUM_RECTS(pGC->pCompositeClip))
+ return;
+
+ (*pGC->font->get_glyphs)(
+ pGC->font, (unsigned long)count, (unsigned char *)chars,
+ (FONTLASTROW(pGC->font) == 0) ? Linear16Bit : TwoD16Bit,
+ &n, infoRec->CharInfo);
+
+ if(n) XAAGlyphBltTEColorExpansion(
+ infoRec->pScrn, x + pDraw->x, y + pDraw->y,
+ pGC->font, pGC->fgPixel, pGC->bgPixel, GXcopy, pGC->planemask,
+ pGC->pCompositeClip, n, FONTGLYPHS(pGC->font), infoRec->CharInfo);
+}
+
+
+
+/********************************************************************
+
+ GC level replacements for ImageGlyphBlt and PolyGlyphBlt for
+ TE fonts when using color expansion.
+
+********************************************************************/
+
+
+void
+XAAImageGlyphBltTEColorExpansion(
+ DrawablePtr pDrawable,
+ GCPtr pGC,
+ int xInit, int yInit,
+ unsigned int nglyph,
+ CharInfoPtr *ppci,
+ pointer pglyphBase )
+{
+ XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
+
+ if(!REGION_NUM_RECTS(pGC->pCompositeClip))
+ return;
+
+ XAAGlyphBltTEColorExpansion(
+ infoRec->pScrn, xInit + pDrawable->x, yInit + pDrawable->y,
+ pGC->font, pGC->fgPixel, pGC->bgPixel, GXcopy, pGC->planemask,
+ pGC->pCompositeClip, nglyph, (unsigned char*)pglyphBase, ppci);
+}
+
+void
+XAAPolyGlyphBltTEColorExpansion(
+ DrawablePtr pDrawable,
+ GCPtr pGC,
+ int xInit, int yInit,
+ unsigned int nglyph,
+ CharInfoPtr *ppci,
+ pointer pglyphBase )
+{
+ XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
+
+ if(!REGION_NUM_RECTS(pGC->pCompositeClip))
+ return;
+
+ XAAGlyphBltTEColorExpansion(
+ infoRec->pScrn, xInit + pDrawable->x, yInit + pDrawable->y,
+ pGC->font, pGC->fgPixel, -1, pGC->alu, pGC->planemask,
+ pGC->pCompositeClip, nglyph, (unsigned char*)pglyphBase, ppci);
+}
+
+
+
+
+/********************************************************************
+
+ XAAGlyphBltTEColorExpansion -
+
+ This guy computes the clipped pieces of text and sends it to
+ the lower-level function which will handle acceleration of
+ arbitrarily clipped text.
+
+********************************************************************/
+
+
+static void
+XAAGlyphBltTEColorExpansion(
+ ScrnInfoPtr pScrn,
+ int xInit, int yInit,
+ FontPtr font,
+ int fg, int bg,
+ int rop,
+ unsigned int planemask,
+ RegionPtr cclip,
+ int nglyph,
+ unsigned char* gBase,
+ CharInfoPtr *ppci )
+{
+ XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn);
+ int skippix, skipglyphs;
+ int Left, Right, Top, Bottom;
+ int LeftEdge, RightEdge, ytop, ybot;
+ int nbox = REGION_NUM_RECTS(cclip);
+ BoxPtr pbox = REGION_RECTS(cclip);
+ unsigned int **glyphs = NULL;
+ int glyphWidth = FONTMAXBOUNDS(font, characterWidth);
+
+ /* find the size of the box */
+ Left = xInit;
+ Right = Left + (glyphWidth * nglyph);
+ Top = yInit - FONTASCENT(font);
+ Bottom = yInit + FONTDESCENT(font);
+
+ /* get into the first band that may contain part of our string */
+ while(nbox && (Top >= pbox->y2)) {
+ pbox++; nbox--;
+ }
+
+ /* stop when the lower edge of the box is beyond our string */
+ while(nbox && (Bottom > pbox->y1)) {
+ LeftEdge = max(Left, pbox->x1);
+ RightEdge = min(Right, pbox->x2);
+
+ if(RightEdge > LeftEdge) { /* we have something to draw */
+ unsigned int *fallbackBits = NULL;
+ ytop = max(Top, pbox->y1);
+ ybot = min(Bottom, pbox->y2);
+
+ if((skippix = LeftEdge - Left)) {
+ skipglyphs = skippix/glyphWidth;
+ skippix %= glyphWidth;
+ } else skipglyphs = 0;
+
+ if(!glyphs) {
+ int count;
+ glyphs = (unsigned int**)(infoRec->PreAllocMem);
+
+ for(count = 0; count < nglyph; count++) {
+ glyphs[count] = (unsigned int*)
+ FONTGLYPHBITS(gBase,*ppci++);
+ if (!glyphs[count]) {
+ /* Glyphs with NULL bits do exist in the wild.
+ Replace with blank bits in that case */
+
+ if (!fallbackBits) {
+ int fontHeight = Bottom - Top + 1;
+ fallbackBits = xcalloc (glyphWidth * fontHeight, 1);
+ if (!fallbackBits)
+ return;
+ }
+ glyphs[count] = fallbackBits;
+ }
+ }
+
+ /* our new unrolled TE code only writes DWORDS at a time
+ so it can read up to 6 characters past the last one
+ we're displaying */
+ glyphs[count + 0] = glyphs[0];
+ glyphs[count + 1] = glyphs[0];
+ glyphs[count + 2] = glyphs[0];
+ glyphs[count + 3] = glyphs[0];
+ glyphs[count + 4] = glyphs[0];
+ glyphs[count + 5] = glyphs[0];
+ }
+
+ /* x, y, w, h, skipleft, skiptop, glyphp, glyphWidth, fg, bg, rop, pm */
+
+ (*infoRec->TEGlyphRenderer)( pScrn,
+ LeftEdge, ytop, RightEdge - LeftEdge, ybot - ytop,
+ skippix, ytop - Top, glyphs + skipglyphs, glyphWidth,
+ fg, bg, rop, planemask);
+
+ if (fallbackBits)
+ xfree (fallbackBits);
+ }
+
+ nbox--; pbox++;
+ }
+}
+
+
+
+
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