b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * $XFree86: xc/programs/Xserver/render/picture.h,v 1.20tsi Exp $
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * Copyright © 2000 SuSE, Inc.
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * Permission to use, copy, modify, distribute, and sell this software and its
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * documentation for any purpose is hereby granted without fee, provided that
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * the above copyright notice appear in all copies and that both that
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * copyright notice and this permission notice appear in supporting
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * documentation, and that the name of SuSE not be used in advertising or
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * publicity pertaining to distribution of the software without specific,
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * written prior permission. SuSE makes no representations about the
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * suitability of this software for any purpose. It is provided "as is"
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * without express or implied warranty.
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * Author: Keith Packard, SuSE, Inc.
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * While the protocol is generous in format support, the
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * sample implementation allows only packed RGB and GBR
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * representations for data to simplify software rendering,
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_FORMAT(bpp,type,a,r,g,b) (((bpp) << 24) | \
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync ((a) << 12) | \
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync ((r) << 8) | \
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync ((g) << 4) | \
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * gray/color formats use a visual index instead of argb
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_VISFORMAT(bpp,type,vi) (((bpp) << 24) | \
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_FORMAT_COLOR(f) (PICT_FORMAT_TYPE(f) & 2)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync/* 32bpp formats */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_a8r8g8b8 PICT_FORMAT(32,PICT_TYPE_ARGB,8,8,8,8)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_x8r8g8b8 PICT_FORMAT(32,PICT_TYPE_ARGB,0,8,8,8)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_a8b8g8r8 PICT_FORMAT(32,PICT_TYPE_ABGR,8,8,8,8)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_x8b8g8r8 PICT_FORMAT(32,PICT_TYPE_ABGR,0,8,8,8)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync/* 24bpp formats */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_r8g8b8 PICT_FORMAT(24,PICT_TYPE_ARGB,0,8,8,8)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_b8g8r8 PICT_FORMAT(24,PICT_TYPE_ABGR,0,8,8,8)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync/* 16bpp formats */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_r5g6b5 PICT_FORMAT(16,PICT_TYPE_ARGB,0,5,6,5)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_b5g6r5 PICT_FORMAT(16,PICT_TYPE_ABGR,0,5,6,5)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_a1r5g5b5 PICT_FORMAT(16,PICT_TYPE_ARGB,1,5,5,5)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_x1r5g5b5 PICT_FORMAT(16,PICT_TYPE_ARGB,0,5,5,5)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_a1b5g5r5 PICT_FORMAT(16,PICT_TYPE_ABGR,1,5,5,5)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_x1b5g5r5 PICT_FORMAT(16,PICT_TYPE_ABGR,0,5,5,5)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_a4r4g4b4 PICT_FORMAT(16,PICT_TYPE_ARGB,4,4,4,4)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_x4r4g4b4 PICT_FORMAT(16,PICT_TYPE_ARGB,0,4,4,4)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_a4b4g4r4 PICT_FORMAT(16,PICT_TYPE_ABGR,4,4,4,4)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_x4b4g4r4 PICT_FORMAT(16,PICT_TYPE_ABGR,0,4,4,4)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync/* 8bpp formats */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_r3g3b2 PICT_FORMAT(8,PICT_TYPE_ARGB,0,3,3,2)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_b2g3r3 PICT_FORMAT(8,PICT_TYPE_ABGR,0,3,3,2)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_a2r2g2b2 PICT_FORMAT(8,PICT_TYPE_ARGB,2,2,2,2)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_a2b2g2r2 PICT_FORMAT(8,PICT_TYPE_ABGR,2,2,2,2)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_c8 PICT_FORMAT(8,PICT_TYPE_COLOR,0,0,0,0)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_g8 PICT_FORMAT(8,PICT_TYPE_GRAY,0,0,0,0)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync/* 4bpp formats */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_r1g2b1 PICT_FORMAT(4,PICT_TYPE_ARGB,0,1,2,1)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_b1g2r1 PICT_FORMAT(4,PICT_TYPE_ABGR,0,1,2,1)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_a1r1g1b1 PICT_FORMAT(4,PICT_TYPE_ARGB,1,1,1,1)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_a1b1g1r1 PICT_FORMAT(4,PICT_TYPE_ABGR,1,1,1,1)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_c4 PICT_FORMAT(4,PICT_TYPE_COLOR,0,0,0,0)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_g4 PICT_FORMAT(4,PICT_TYPE_GRAY,0,0,0,0)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync/* 1bpp formats */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define PICT_g1 PICT_FORMAT(1,PICT_TYPE_GRAY,0,0,0,0)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * For dynamic indexed visuals (GrayScale and PseudoColor), these control the
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * selection of colors allocated for drawing to Pictures. The default
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * policy depends on the size of the colormap:
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * Size Default Policy
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * ----------------------------
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * < 64 PolicyMono
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * < 256 PolicyGray
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * 256 PolicyColor (only on PseudoColor)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * The actual allocation code lives in miindex.c, and so is
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * austensibly server dependent, but that code does:
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * PolicyMono Allocate no additional colors, use black and white
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * PolicyGray Allocate 13 gray levels (11 cells used)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * PolicyColor Allocate a 4x4x4 cube and 13 gray levels (71 cells used)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * PolicyAll Allocate as big a cube as possible, fill with gray (all)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * Here's a picture to help understand how many colors are
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * actually allocated (this is just the gray ramp):
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * gray level
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * all 0000 1555 2aaa 4000 5555 6aaa 8000 9555 aaaa bfff d555 eaaa ffff
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * b/w 0000 ffff
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * 4x4x4 5555 aaaa
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * extra 1555 2aaa 4000 6aaa 8000 9555 bfff d555 eaaa
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * The default colormap supplies two gray levels (black/white), the
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * 4x4x4 cube allocates another two and nine more are allocated to fill
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * in the 13 levels. When the 4x4x4 cube is not allocated, a total of
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * 11 cells are allocated.
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync/* Fixed point updates from Carl Worth, USC, Information Sciences Institute */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync# if defined (_LP64) || \
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync defined(__sparc64__) || \
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync defined(__s390x__) || \
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync# if defined(__GNUC__) && \
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync ((__GNUC__ == 2) && defined(__GNUC_MINOR__) && (__GNUC_MINOR__ > 7)))
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsynctypedef long long int xFixed_32_32;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * An unadorned "xFixed" is the same as xFixed_16_16,
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * (since it's quite common in the code)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define IntToxFixed(i) ((xFixed) (i) << XFIXED_BITS)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define xFixedCeil(f) xFixedFloor((f) + xFixed1MinusE)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define xFixedMod2(f) ((f) & (xFixed1 | xFixed1MinusE))
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync/* whether 't' is a well defined not obviously empty trapezoid */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define xTrapezoidValid(t) ((t)->left.p1.y != (t)->left.p2.y && \
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * Standard NTSC luminance conversions:
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * y = r * 0.299 + g * 0.587 + b * 0.114
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * Approximate this for a bit more speed:
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * y = (r * 153 + g * 301 + b * 58) / 512
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * This gives 17 bits of luminance; to get 15 bits, lop the low two
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define CvtR8G8B8toY15(s) (((((s) >> 16) & 0xff) * 153 + \
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#endif /* _PICTURE_H_ */