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-rw-r--r--xorg-server/mi/miline.h345
1 files changed, 172 insertions, 173 deletions
diff --git a/xorg-server/mi/miline.h b/xorg-server/mi/miline.h
index 0f2fc3374..c1a51c15c 100644
--- a/xorg-server/mi/miline.h
+++ b/xorg-server/mi/miline.h
@@ -1,173 +1,172 @@
-
-/*
-
-Copyright 1994, 1998 The Open Group
-
-Permission to use, copy, modify, distribute, and sell this software and its
-documentation for any purpose is hereby granted without fee, provided that
-the above copyright notice appear in all copies and that both that
-copyright notice and this permission notice appear in supporting
-documentation.
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of The Open Group shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from The Open Group.
-
-*/
-
-#ifndef MILINE_H
-
-#include "screenint.h"
-#include "privates.h"
-
-/*
- * Public definitions used for configuring basic pixelization aspects
- * of the sample implementation line-drawing routines provided in
- * {mfb,mi,cfb*} at run-time.
- */
-
-#define XDECREASING 4
-#define YDECREASING 2
-#define YMAJOR 1
-
-#define OCTANT1 (1 << (YDECREASING))
-#define OCTANT2 (1 << (YDECREASING|YMAJOR))
-#define OCTANT3 (1 << (XDECREASING|YDECREASING|YMAJOR))
-#define OCTANT4 (1 << (XDECREASING|YDECREASING))
-#define OCTANT5 (1 << (XDECREASING))
-#define OCTANT6 (1 << (XDECREASING|YMAJOR))
-#define OCTANT7 (1 << (YMAJOR))
-#define OCTANT8 (1 << (0))
-
-#define XMAJOROCTANTS (OCTANT1 | OCTANT4 | OCTANT5 | OCTANT8)
-
-#define DEFAULTZEROLINEBIAS (OCTANT2 | OCTANT3 | OCTANT4 | OCTANT5)
-
-/*
- * Devices can configure the rendering of routines in mi, mfb, and cfb*
- * by specifying a thin line bias to be applied to a particular screen
- * using the following function. The bias parameter is an OR'ing of
- * the appropriate OCTANT constants defined above to indicate which
- * octants to bias a line to prefer an axial step when the Bresenham
- * error term is exactly zero. The octants are mapped as follows:
- *
- * \ | /
- * \ 3 | 2 /
- * \ | /
- * 4 \ | / 1
- * \|/
- * -----------
- * /|\
- * 5 / | \ 8
- * / | \
- * / 6 | 7 \
- * / | \
- *
- * For more information, see "Ambiguities in Incremental Line Rastering,"
- * Jack E. Bresenham, IEEE CG&A, May 1987.
- */
-
-extern _X_EXPORT void miSetZeroLineBias(
- ScreenPtr /* pScreen */,
- unsigned int /* bias */
-);
-
-/*
- * Private definitions needed for drawing thin (zero width) lines
- * Used by the mi, mfb, and all cfb* components.
- */
-
-#define X_AXIS 0
-#define Y_AXIS 1
-
-#define OUT_LEFT 0x08
-#define OUT_RIGHT 0x04
-#define OUT_ABOVE 0x02
-#define OUT_BELOW 0x01
-
-#define OUTCODES(_result, _x, _y, _pbox) \
- if ( (_x) < (_pbox)->x1) (_result) |= OUT_LEFT; \
- else if ( (_x) >= (_pbox)->x2) (_result) |= OUT_RIGHT; \
- if ( (_y) < (_pbox)->y1) (_result) |= OUT_ABOVE; \
- else if ( (_y) >= (_pbox)->y2) (_result) |= OUT_BELOW;
-
-#define MIOUTCODES(outcode, x, y, xmin, ymin, xmax, ymax) \
-{\
- if (x < xmin) outcode |= OUT_LEFT;\
- if (x > xmax) outcode |= OUT_RIGHT;\
- if (y < ymin) outcode |= OUT_ABOVE;\
- if (y > ymax) outcode |= OUT_BELOW;\
-}
-
-#define SWAPINT(i, j) \
-{ int _t = i; i = j; j = _t; }
-
-#define SWAPPT(i, j) \
-{ DDXPointRec _t; _t = i; i = j; j = _t; }
-
-#define SWAPINT_PAIR(x1, y1, x2, y2)\
-{ int t = x1; x1 = x2; x2 = t;\
- t = y1; y1 = y2; y2 = t;\
-}
-
-#define miGetZeroLineBias(_pScreen) ((unsigned long) (unsigned long*)\
- dixLookupPrivate(&(_pScreen)->devPrivates, miZeroLineScreenKey))
-
-#define CalcLineDeltas(_x1,_y1,_x2,_y2,_adx,_ady,_sx,_sy,_SX,_SY,_octant) \
- (_octant) = 0; \
- (_sx) = (_SX); \
- if (((_adx) = (_x2) - (_x1)) < 0) { \
- (_adx) = -(_adx); \
- (_sx = -(_sx)); \
- (_octant) |= XDECREASING; \
- } \
- (_sy) = (_SY); \
- if (((_ady) = (_y2) - (_y1)) < 0) { \
- (_ady) = -(_ady); \
- (_sy = -(_sy)); \
- (_octant) |= YDECREASING; \
- }
-
-#define SetYMajorOctant(_octant) ((_octant) |= YMAJOR)
-
-#define FIXUP_ERROR(_e, _octant, _bias) \
- (_e) -= (((_bias) >> (_octant)) & 1)
-
-#define IsXMajorOctant(_octant) (!((_octant) & YMAJOR))
-#define IsYMajorOctant(_octant) ((_octant) & YMAJOR)
-#define IsXDecreasingOctant(_octant) ((_octant) & XDECREASING)
-#define IsYDecreasingOctant(_octant) ((_octant) & YDECREASING)
-
-extern _X_EXPORT DevPrivateKeyRec miZeroLineScreenKeyRec;
-#define miZeroLineScreenKey (&miZeroLineScreenKeyRec)
-
-extern _X_EXPORT int miZeroClipLine(
- int /*xmin*/,
- int /*ymin*/,
- int /*xmax*/,
- int /*ymax*/,
- int * /*new_x1*/,
- int * /*new_y1*/,
- int * /*new_x2*/,
- int * /*new_y2*/,
- unsigned int /*adx*/,
- unsigned int /*ady*/,
- int * /*pt1_clipped*/,
- int * /*pt2_clipped*/,
- int /*octant*/,
- unsigned int /*bias*/,
- int /*oc1*/,
- int /*oc2*/
-);
-
-#endif /* MILINE_H */
+
+/*
+
+Copyright 1994, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+*/
+
+#ifndef MILINE_H
+
+#include "screenint.h"
+#include "privates.h"
+
+/*
+ * Public definitions used for configuring basic pixelization aspects
+ * of the sample implementation line-drawing routines provided in
+ * {mfb,mi,cfb*} at run-time.
+ */
+
+#define XDECREASING 4
+#define YDECREASING 2
+#define YMAJOR 1
+
+#define OCTANT1 (1 << (YDECREASING))
+#define OCTANT2 (1 << (YDECREASING|YMAJOR))
+#define OCTANT3 (1 << (XDECREASING|YDECREASING|YMAJOR))
+#define OCTANT4 (1 << (XDECREASING|YDECREASING))
+#define OCTANT5 (1 << (XDECREASING))
+#define OCTANT6 (1 << (XDECREASING|YMAJOR))
+#define OCTANT7 (1 << (YMAJOR))
+#define OCTANT8 (1 << (0))
+
+#define XMAJOROCTANTS (OCTANT1 | OCTANT4 | OCTANT5 | OCTANT8)
+
+#define DEFAULTZEROLINEBIAS (OCTANT2 | OCTANT3 | OCTANT4 | OCTANT5)
+
+/*
+ * Devices can configure the rendering of routines in mi, mfb, and cfb*
+ * by specifying a thin line bias to be applied to a particular screen
+ * using the following function. The bias parameter is an OR'ing of
+ * the appropriate OCTANT constants defined above to indicate which
+ * octants to bias a line to prefer an axial step when the Bresenham
+ * error term is exactly zero. The octants are mapped as follows:
+ *
+ * \ | /
+ * \ 3 | 2 /
+ * \ | /
+ * 4 \ | / 1
+ * \|/
+ * -----------
+ * /|\
+ * 5 / | \ 8
+ * / | \
+ * / 6 | 7 \
+ * / | \
+ *
+ * For more information, see "Ambiguities in Incremental Line Rastering,"
+ * Jack E. Bresenham, IEEE CG&A, May 1987.
+ */
+
+extern _X_EXPORT void miSetZeroLineBias(ScreenPtr /* pScreen */ ,
+ unsigned int /* bias */
+ );
+
+/*
+ * Private definitions needed for drawing thin (zero width) lines
+ * Used by the mi, mfb, and all cfb* components.
+ */
+
+#define X_AXIS 0
+#define Y_AXIS 1
+
+#define OUT_LEFT 0x08
+#define OUT_RIGHT 0x04
+#define OUT_ABOVE 0x02
+#define OUT_BELOW 0x01
+
+#define OUTCODES(_result, _x, _y, _pbox) \
+ if ( (_x) < (_pbox)->x1) (_result) |= OUT_LEFT; \
+ else if ( (_x) >= (_pbox)->x2) (_result) |= OUT_RIGHT; \
+ if ( (_y) < (_pbox)->y1) (_result) |= OUT_ABOVE; \
+ else if ( (_y) >= (_pbox)->y2) (_result) |= OUT_BELOW;
+
+#define MIOUTCODES(outcode, x, y, xmin, ymin, xmax, ymax) \
+{\
+ if (x < xmin) outcode |= OUT_LEFT;\
+ if (x > xmax) outcode |= OUT_RIGHT;\
+ if (y < ymin) outcode |= OUT_ABOVE;\
+ if (y > ymax) outcode |= OUT_BELOW;\
+}
+
+#define SWAPINT(i, j) \
+{ int _t = i; i = j; j = _t; }
+
+#define SWAPPT(i, j) \
+{ DDXPointRec _t; _t = i; i = j; j = _t; }
+
+#define SWAPINT_PAIR(x1, y1, x2, y2)\
+{ int t = x1; x1 = x2; x2 = t;\
+ t = y1; y1 = y2; y2 = t;\
+}
+
+#define miGetZeroLineBias(_pScreen) ((unsigned long) (unsigned long*)\
+ dixLookupPrivate(&(_pScreen)->devPrivates, miZeroLineScreenKey))
+
+#define CalcLineDeltas(_x1,_y1,_x2,_y2,_adx,_ady,_sx,_sy,_SX,_SY,_octant) \
+ (_octant) = 0; \
+ (_sx) = (_SX); \
+ if (((_adx) = (_x2) - (_x1)) < 0) { \
+ (_adx) = -(_adx); \
+ (_sx = -(_sx)); \
+ (_octant) |= XDECREASING; \
+ } \
+ (_sy) = (_SY); \
+ if (((_ady) = (_y2) - (_y1)) < 0) { \
+ (_ady) = -(_ady); \
+ (_sy = -(_sy)); \
+ (_octant) |= YDECREASING; \
+ }
+
+#define SetYMajorOctant(_octant) ((_octant) |= YMAJOR)
+
+#define FIXUP_ERROR(_e, _octant, _bias) \
+ (_e) -= (((_bias) >> (_octant)) & 1)
+
+#define IsXMajorOctant(_octant) (!((_octant) & YMAJOR))
+#define IsYMajorOctant(_octant) ((_octant) & YMAJOR)
+#define IsXDecreasingOctant(_octant) ((_octant) & XDECREASING)
+#define IsYDecreasingOctant(_octant) ((_octant) & YDECREASING)
+
+extern _X_EXPORT DevPrivateKeyRec miZeroLineScreenKeyRec;
+
+#define miZeroLineScreenKey (&miZeroLineScreenKeyRec)
+
+extern _X_EXPORT int miZeroClipLine(int /*xmin */ ,
+ int /*ymin */ ,
+ int /*xmax */ ,
+ int /*ymax */ ,
+ int * /*new_x1 */ ,
+ int * /*new_y1 */ ,
+ int * /*new_x2 */ ,
+ int * /*new_y2 */ ,
+ unsigned int /*adx */ ,
+ unsigned int /*ady */ ,
+ int * /*pt1_clipped */ ,
+ int * /*pt2_clipped */ ,
+ int /*octant */ ,
+ unsigned int /*bias */ ,
+ int /*oc1 */ ,
+ int /*oc2 */
+ );
+
+#endif /* MILINE_H */
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