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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
commit3562e78743202e43aec8727005182a2558117eca (patch)
tree8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /xorg-server/render/renderedge.h
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Checked in the following released items:
xkeyboard-config-1.4.tar.gz ttf-bitstream-vera-1.10.tar.gz font-alias-1.0.1.tar.gz font-sun-misc-1.0.0.tar.gz font-sun-misc-1.0.0.tar.gz font-sony-misc-1.0.0.tar.gz font-schumacher-misc-1.0.0.tar.gz font-mutt-misc-1.0.0.tar.gz font-misc-misc-1.0.0.tar.gz font-misc-meltho-1.0.0.tar.gz font-micro-misc-1.0.0.tar.gz font-jis-misc-1.0.0.tar.gz font-isas-misc-1.0.0.tar.gz font-dec-misc-1.0.0.tar.gz font-daewoo-misc-1.0.0.tar.gz font-cursor-misc-1.0.0.tar.gz font-arabic-misc-1.0.0.tar.gz font-winitzki-cyrillic-1.0.0.tar.gz font-misc-cyrillic-1.0.0.tar.gz font-cronyx-cyrillic-1.0.0.tar.gz font-screen-cyrillic-1.0.1.tar.gz font-xfree86-type1-1.0.1.tar.gz font-adobe-utopia-type1-1.0.1.tar.gz font-ibm-type1-1.0.0.tar.gz font-bitstream-type1-1.0.0.tar.gz font-bitstream-speedo-1.0.0.tar.gz font-bh-ttf-1.0.0.tar.gz font-bh-type1-1.0.0.tar.gz font-bitstream-100dpi-1.0.0.tar.gz font-bh-lucidatypewriter-100dpi-1.0.0.tar.gz font-bh-100dpi-1.0.0.tar.gz font-adobe-utopia-100dpi-1.0.1.tar.gz font-adobe-100dpi-1.0.0.tar.gz font-util-1.0.1.tar.gz font-bitstream-75dpi-1.0.0.tar.gz font-bh-lucidatypewriter-75dpi-1.0.0.tar.gz font-adobe-utopia-75dpi-1.0.1.tar.gz font-bh-75dpi-1.0.0.tar.gz bdftopcf-1.0.1.tar.gz font-adobe-75dpi-1.0.0.tar.gz mkfontscale-1.0.6.tar.gz openssl-0.9.8k.tar.gz bigreqsproto-1.0.2.tar.gz xtrans-1.2.2.tar.gz resourceproto-1.0.2.tar.gz inputproto-1.4.4.tar.gz compositeproto-0.4.tar.gz damageproto-1.1.0.tar.gz zlib-1.2.3.tar.gz xkbcomp-1.0.5.tar.gz freetype-2.3.9.tar.gz pthreads-w32-2-8-0-release.tar.gz pixman-0.12.0.tar.gz kbproto-1.0.3.tar.gz evieext-1.0.2.tar.gz fixesproto-4.0.tar.gz recordproto-1.13.2.tar.gz randrproto-1.2.2.tar.gz scrnsaverproto-1.1.0.tar.gz renderproto-0.9.3.tar.gz xcmiscproto-1.1.2.tar.gz fontsproto-2.0.2.tar.gz xextproto-7.0.3.tar.gz xproto-7.0.14.tar.gz libXdmcp-1.0.2.tar.gz libxkbfile-1.0.5.tar.gz libfontenc-1.0.4.tar.gz libXfont-1.3.4.tar.gz libX11-1.1.5.tar.gz libXau-1.0.4.tar.gz libxcb-1.1.tar.gz xorg-server-1.5.3.tar.gz
Diffstat (limited to 'xorg-server/render/renderedge.h')
-rw-r--r--xorg-server/render/renderedge.h105
1 files changed, 105 insertions, 0 deletions
diff --git a/xorg-server/render/renderedge.h b/xorg-server/render/renderedge.h
new file mode 100644
index 000000000..644d9d9e5
--- /dev/null
+++ b/xorg-server/render/renderedge.h
@@ -0,0 +1,105 @@
+/*
+ * Copyright © 2004 Keith Packard
+ *
+ * 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, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Keith Packard makes no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _RENDEREDGE_H_
+#define _RENDEREDGE_H_
+
+#include "picturestr.h"
+
+#define MAX_ALPHA(n) ((1 << (n)) - 1)
+#define N_Y_FRAC(n) ((n) == 1 ? 1 : (1 << ((n)/2)) - 1)
+#define N_X_FRAC(n) ((1 << ((n)/2)) + 1)
+
+#define STEP_Y_SMALL(n) (xFixed1 / N_Y_FRAC(n))
+#define STEP_Y_BIG(n) (xFixed1 - (N_Y_FRAC(n) - 1) * STEP_Y_SMALL(n))
+
+#define Y_FRAC_FIRST(n) (STEP_Y_SMALL(n) / 2)
+#define Y_FRAC_LAST(n) (Y_FRAC_FIRST(n) + (N_Y_FRAC(n) - 1) * STEP_Y_SMALL(n))
+
+#define STEP_X_SMALL(n) (xFixed1 / N_X_FRAC(n))
+#define STEP_X_BIG(n) (xFixed1 - (N_X_FRAC(n) - 1) * STEP_X_SMALL(n))
+
+#define X_FRAC_FIRST(n) (STEP_X_SMALL(n) / 2)
+#define X_FRAC_LAST(n) (X_FRAC_FIRST(n) + (N_X_FRAC(n) - 1) * STEP_X_SMALL(n))
+
+#define RenderSamplesX(x,n) ((n) == 1 ? 0 : (xFixedFrac (x) + X_FRAC_FIRST(n)) / STEP_X_SMALL(n))
+
+/*
+ * An edge structure. This represents a single polygon edge
+ * and can be quickly stepped across small or large gaps in the
+ * sample grid
+ */
+typedef pixman_edge_t RenderEdge;
+
+/*
+ * Step across a small sample grid gap
+ */
+#define RenderEdgeStepSmall(edge) { \
+ edge->x += edge->stepx_small; \
+ edge->e += edge->dx_small; \
+ if (edge->e > 0) \
+ { \
+ edge->e -= edge->dy; \
+ edge->x += edge->signdx; \
+ } \
+}
+
+/*
+ * Step across a large sample grid gap
+ */
+#define RenderEdgeStepBig(edge) { \
+ edge->x += edge->stepx_big; \
+ edge->e += edge->dx_big; \
+ if (edge->e > 0) \
+ { \
+ edge->e -= edge->dy; \
+ edge->x += edge->signdx; \
+ } \
+}
+
+xFixed
+RenderSampleCeilY (xFixed y, int bpp);
+
+xFixed
+RenderSampleFloorY (xFixed y, int bpp);
+
+void
+RenderEdgeStep (RenderEdge *e, int n);
+
+void
+RenderEdgeInit (RenderEdge *e,
+ int bpp,
+ xFixed y_start,
+ xFixed x_top,
+ xFixed y_top,
+ xFixed x_bot,
+ xFixed y_bot);
+
+void
+RenderLineFixedEdgeInit (RenderEdge *e,
+ int bpp,
+ xFixed y,
+ xLineFixed *line,
+ int x_off,
+ int y_off);
+
+#endif /* _RENDEREDGE_H_ */