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/* $XFree86: xc/programs/Xserver/hw/xfree86/xaa/xaaNonTEGlyph.c,v 1.6 1999/11/06 23:14:46 mvojkovi Exp $ */
#include "xaa.h"
#include "xaalocal.h"
#include "xaacexp.h"
#include "xf86.h"
#include "xf86_ansic.h"
/* Not used anymore because the algorithm isn't correct. It doesn't
handle overlapping characters properly */
#ifdef TRIPLE_BITS
#define NonTEGlyphFunc EXPNAME(XAANonTEGlyphScanlineFunc3)
#else
#define NonTEGlyphFunc EXPNAME(XAANonTEGlyphScanlineFunc)
#endif
/********************************************************************
Here we have NonTEGlyphRenders for a bunch of different color
expansion types. The driver may provide its own renderer, but
this is the default one which renders using lower-level primitives
exported by the chipset driver.
********************************************************************/
/* Since the dimensions of the text string and the backing rectangle
do not always coincide, it is possible that wBack or wText
may be 0! The NonTEGlyphRender must always check for this. */
/* This gets built for MSBFIRST or LSBFIRST with FIXEDBASE or not,
with TRIPLE_BITS or not. A total of 8 versions */
/* if the backing rectangle and text are of the same dimensions
then we can draw in one pass */
void
#ifdef TRIPLE_BITS
EXPNAME(XAANonTEGlyphRenderer3)(
#else
EXPNAME(XAANonTEGlyphRenderer)(
#endif
ScrnInfoPtr pScrn,
int xText, int wText,
int y, int h, int skipleft, int startline,
NonTEGlyphInfo *glyphp,
int fg, int rop,
unsigned int planemask )
{
XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn);
CARD32* base = (CARD32*)infoRec->ColorExpandBase;
#ifdef TRIPLE_BITS
int dwords = ((3 * wText + 31) >> 5) * h;
#else
int dwords = ((wText + 31) >> 5) * h;
#endif
(*infoRec->SetupForCPUToScreenColorExpandFill)(
pScrn, fg, -1, rop, planemask);
(*infoRec->SubsequentCPUToScreenColorExpandFill)(
pScrn, xText, y, wText, h, 0);
#ifndef FIXEDBASE
#ifdef TRIPLE_BITS
if((((3 * wText + 31) >> 5) * h) <= infoRec->ColorExpandRange)
#else
if((((wText + 31) >> 5) * h) <= infoRec->ColorExpandRange)
#endif
while(h--)
base = NonTEGlyphFunc(base, glyphp, startline++, wText, skipleft);
else
#endif
while(h--)
NonTEGlyphFunc(base, glyphp, startline++, wText, skipleft);
if((infoRec->CPUToScreenColorExpandFillFlags & CPU_TRANSFER_PAD_QWORD) &&
(dwords & 1)) {
base = (CARD32*)infoRec->ColorExpandBase;
base[0] = 0x00000000;
}
if(infoRec->CPUToScreenColorExpandFillFlags & SYNC_AFTER_COLOR_EXPAND)
(*infoRec->Sync)(pScrn);
else SET_SYNC_FLAG(infoRec);
}
#ifndef FIXEDBASE
/* Scanline version of above gets built for LSBFIRST and MSBFIRST */
void
#ifdef TRIPLE_BITS
EXPNAME(XAANonTEGlyphRendererScanline3)(
#else
EXPNAME(XAANonTEGlyphRendererScanline)(
#endif
ScrnInfoPtr pScrn,
int xText, int wText,
int y, int h, int skipleft, int startline,
NonTEGlyphInfo *glyphp,
int fg, int rop,
unsigned int planemask )
{
XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn);
int bufferNo = 0;
CARD32* base;
(*infoRec->SetupForScanlineCPUToScreenColorExpandFill)(
pScrn, fg, -1, rop, planemask);
(*infoRec->SubsequentScanlineCPUToScreenColorExpandFill)(
pScrn, xText, y, wText, h, 0);
while(h--) {
base = (CARD32*)infoRec->ScanlineColorExpandBuffers[bufferNo];
NonTEGlyphFunc(base, glyphp, startline++, wText, skipleft);
(*infoRec->SubsequentColorExpandScanline)(pScrn, bufferNo++);
if(bufferNo >= infoRec->NumScanlineColorExpandBuffers)
bufferNo = 0;
}
SET_SYNC_FLAG(infoRec);
}
#endif
/********************************************************************
Generic NonTE scanline rendering code.
********************************************************************/
CARD32*
NonTEGlyphFunc(
CARD32 *base,
NonTEGlyphInfo *glyphp,
int line, int TotalWidth, int skipleft )
{
CARD32 bits = 0;
int shift = glyphp->width;
if(skipleft) {
if((line >= glyphp->firstline) && (line <= glyphp->lastline))
bits = SHIFT_R(glyphp->bitsp[line], skipleft);
shift -= skipleft;
} else if((line >= glyphp->firstline) && (line <= glyphp->lastline))
bits = glyphp->bitsp[line];
while(TotalWidth > 32) {
while(shift < 32) {
glyphp++;
if((line >= glyphp->firstline) && (line <= glyphp->lastline))
bits |= SHIFT_L(glyphp->bitsp[line],shift);
shift += glyphp->width;
}
#ifdef TRIPLE_BITS
WRITE_BITS3(bits);
#else
WRITE_BITS(bits);
#endif
shift &= 31;
if(shift &&
(line >= glyphp->firstline) && (line <= glyphp->lastline))
bits = SHIFT_R(glyphp->bitsp[line], glyphp->width - shift);
else bits = 0;
TotalWidth -= 32;
}
if(TotalWidth) {
TotalWidth -= shift;
while(TotalWidth > 0) {
glyphp++;
if((line >= glyphp->firstline) && (line <= glyphp->lastline))
bits |= SHIFT_L(glyphp->bitsp[line], shift);
shift += glyphp->width;
TotalWidth -= glyphp->width;
}
#ifdef TRIPLE_BITS
if (shift >= 22) {
WRITE_BITS3(bits);
} else if (shift >= 11) {
WRITE_BITS2(bits);
} else {
WRITE_BITS1(bits);
}
#else
WRITE_BITS(bits);
#endif
}
return base;
}
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