49f77fff14
Save in a few special cases, _X_EXPORT should not be used in C source files. Instead, it should be used in headers, and the proper C source include that header. Some special cases are symbols that need to be shared between modules, but not expected to be used by external drivers, and symbols that are accessible via LoaderSymbol/dlopen. This patch also adds conditionally some new sdk header files, depending on extensions enabled. These files were added to match pattern for other extensions/modules, that is, have the headers "deciding" symbol visibility in the sdk. These headers are: o Xext/panoramiXsrv.h, Xext/panoramiX.h o fbpict.h (unconditionally) o vidmodeproc.h o mioverlay.h (unconditionally, used only by xaa) o xfixes.h (unconditionally, symbols required by dri2) LoaderSymbol and similar functions now don't have different prototypes, in loaderProcs.h and xf86Module.h, so that both headers can be included, without the need of defining IN_LOADER. xf86NewInputDevice() device prototype readded to xf86Xinput.h, but not exported (and with a comment about it).
313 lines
7.1 KiB
C
313 lines
7.1 KiB
C
/*
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* Copyright © 1998 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include "fb.h"
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#ifndef FBNOPIXADDR
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/*
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* This is a slight abuse of the preprocessor to generate repetitive
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* code, the idea is to generate code for each case of a copy-mode
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* transparent stipple
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*/
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#define LaneCases1(c,a) case c: \
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while (n--) { (void)FbLaneCase(c,a); a++; } \
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break
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#define LaneCases2(c,a) LaneCases1(c,a); LaneCases1(c+1,a)
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#define LaneCases4(c,a) LaneCases2(c,a); LaneCases2(c+2,a)
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#define LaneCases8(c,a) LaneCases4(c,a); LaneCases4(c+4,a)
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#define LaneCases16(c,a) LaneCases8(c,a); LaneCases8(c+8,a)
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#define LaneCases32(c,a) LaneCases16(c,a); LaneCases16(c+16,a)
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#define LaneCases64(c,a) LaneCases32(c,a); LaneCases32(c+32,a)
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#define LaneCases128(c,a) LaneCases64(c,a); LaneCases64(c+64,a)
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#define LaneCases256(c,a) LaneCases128(c,a); LaneCases128(c+128,a)
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#if FB_SHIFT == 6
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#define LaneCases(a) LaneCases256(0,a)
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#endif
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#if FB_SHIFT == 5
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#define LaneCases(a) LaneCases16(0,a)
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#endif
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/*
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* Repeat a transparent stipple across a scanline n times
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*/
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void
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fbTransparentSpan (FbBits *dst,
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FbBits stip,
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FbBits fgxor,
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int n)
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{
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FbStip s;
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s = ((FbStip) (stip ) & 0x01);
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s |= ((FbStip) (stip >> 8) & 0x02);
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s |= ((FbStip) (stip >> 16) & 0x04);
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s |= ((FbStip) (stip >> 24) & 0x08);
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#if FB_SHIFT > 5
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s |= ((FbStip) (stip >> 32) & 0x10);
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s |= ((FbStip) (stip >> 40) & 0x20);
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s |= ((FbStip) (stip >> 48) & 0x40);
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s |= ((FbStip) (stip >> 56) & 0x80);
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#endif
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switch (s) {
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LaneCases(dst);
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}
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}
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#endif
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void
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fbEvenStipple (FbBits *dst,
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FbStride dstStride,
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int dstX,
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int dstBpp,
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int width,
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int height,
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FbStip *stip,
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FbStride stipStride,
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int stipHeight,
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FbBits fgand,
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FbBits fgxor,
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FbBits bgand,
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FbBits bgxor,
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int xRot,
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int yRot)
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{
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FbBits startmask, endmask;
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FbBits mask, and, xor;
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int nmiddle, n;
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FbStip *s, *stipEnd, bits;
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int rot, stipX, stipY;
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int pixelsPerDst;
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const FbBits *fbBits;
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Bool transparent;
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int startbyte, endbyte;
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/*
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* Check for a transparent stipple (stencil)
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*/
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transparent = FALSE;
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if (dstBpp >= 8 &&
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fgand == 0 && bgand == FB_ALLONES && bgxor == 0)
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transparent = TRUE;
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pixelsPerDst = FB_UNIT / dstBpp;
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/*
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* Adjust dest pointers
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*/
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dst += dstX >> FB_SHIFT;
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dstX &= FB_MASK;
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FbMaskBitsBytes (dstX, width, fgand == 0 && bgand == 0,
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startmask, startbyte, nmiddle, endmask, endbyte);
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if (startmask)
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dstStride--;
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dstStride -= nmiddle;
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xRot *= dstBpp;
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/*
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* Compute stip start scanline and rotation parameters
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*/
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stipEnd = stip + stipStride * stipHeight;
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modulus (- yRot, stipHeight, stipY);
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s = stip + stipStride * stipY;
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modulus (- xRot, FB_UNIT, stipX);
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rot = stipX;
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/*
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* Get pointer to stipple mask array for this depth
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*/
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/* fbStippleTable covers all valid bpp (4,8,16,32) */
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fbBits = fbStippleTable[pixelsPerDst];
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while (height--)
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{
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/*
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* Extract stipple bits for this scanline;
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*/
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bits = READ(s);
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s += stipStride;
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if (s == stipEnd)
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s = stip;
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#if FB_UNIT > 32
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if (pixelsPerDst == 16)
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mask = FbStipple16Bits(FbLeftStipBits(bits,16));
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else
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#endif
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mask = fbBits[FbLeftStipBits(bits,pixelsPerDst)];
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/*
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* Rotate into position and compute reduced rop values
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*/
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mask = FbRotLeft(mask, rot);
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and = (fgand & mask) | (bgand & ~mask);
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xor = (fgxor & mask) | (bgxor & ~mask);
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#ifndef FBNOPIXADDR
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if (transparent)
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{
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if (startmask)
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{
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fbTransparentSpan(dst, mask&startmask, fgxor, 1);
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dst++;
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}
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fbTransparentSpan (dst, mask, fgxor, nmiddle);
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dst += nmiddle;
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if (endmask)
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fbTransparentSpan(dst, mask&endmask, fgxor, 1);
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}
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else
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#endif
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{
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/*
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* Fill scanline
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*/
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if (startmask)
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{
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FbDoLeftMaskByteRRop (dst, startbyte, startmask, and, xor);
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dst++;
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}
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n = nmiddle;
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if (!and)
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while (n--)
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WRITE(dst++, xor);
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else
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{
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while (n--)
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{
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WRITE(dst, FbDoRRop (READ(dst), and, xor));
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dst++;
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}
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}
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if (endmask)
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FbDoRightMaskByteRRop(dst, endbyte, endmask, and, xor);
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}
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dst += dstStride;
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}
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}
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void
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fbOddStipple (FbBits *dst,
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FbStride dstStride,
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int dstX,
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int dstBpp,
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int width,
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int height,
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FbStip *stip,
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FbStride stipStride,
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int stipWidth,
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int stipHeight,
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FbBits fgand,
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FbBits fgxor,
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FbBits bgand,
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FbBits bgxor,
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int xRot,
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int yRot)
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{
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int stipX, stipY, sx;
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int widthTmp;
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int h, w;
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int x, y;
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modulus (- yRot, stipHeight, stipY);
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modulus (dstX / dstBpp - xRot, stipWidth, stipX);
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y = 0;
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while (height)
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{
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h = stipHeight - stipY;
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if (h > height)
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h = height;
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height -= h;
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widthTmp = width;
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x = dstX;
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sx = stipX;
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while (widthTmp)
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{
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w = (stipWidth - sx) * dstBpp;
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if (w > widthTmp)
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w = widthTmp;
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widthTmp -= w;
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fbBltOne (stip + stipY * stipStride,
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stipStride,
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sx,
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dst + y * dstStride,
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dstStride,
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x,
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dstBpp,
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w, h,
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fgand, fgxor, bgand, bgxor);
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x += w;
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sx = 0;
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}
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y += h;
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stipY = 0;
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}
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}
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void
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fbStipple (FbBits *dst,
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FbStride dstStride,
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int dstX,
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int dstBpp,
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int width,
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int height,
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FbStip *stip,
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FbStride stipStride,
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int stipWidth,
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int stipHeight,
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Bool even,
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FbBits fgand,
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FbBits fgxor,
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FbBits bgand,
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FbBits bgxor,
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int xRot,
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int yRot)
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{
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if (even)
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fbEvenStipple (dst, dstStride, dstX, dstBpp, width, height,
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stip, stipStride, stipHeight,
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fgand, fgxor, bgand, bgxor, xRot, yRot);
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else
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fbOddStipple (dst, dstStride, dstX, dstBpp, width, height,
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stip, stipStride, stipWidth, stipHeight,
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fgand, fgxor, bgand, bgxor, xRot, yRot);
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}
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