b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * Copyright © 2000 SuSE, Inc.
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * Permission to use, copy, modify, distribute, and sell this software and its
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * documentation for any purpose is hereby granted without fee, provided that
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * the above copyright notice appear in all copies and that both that
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * copyright notice and this permission notice appear in supporting
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * documentation, and that the name of SuSE not be used in advertising or
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * publicity pertaining to distribution of the software without specific,
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * written prior permission. SuSE makes no representations about the
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * suitability of this software for any purpose. It is provided "as is"
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * without express or implied warranty.
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * Author: Keith Packard, SuSE, Inc.
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * While the protocol is generous in format support, the
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * sample implementation allows only packed RGB and GBR
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * representations for data to simplify software rendering,
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#define PICT_FORMAT(bpp,type,a,r,g,b) PIXMAN_FORMAT(bpp, type, a, r, g, b)
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * gray/color formats use a visual index instead of argb
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#define PICT_VISFORMAT(bpp,type,vi) (((bpp) << 24) | \
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync/* 32bpp formats */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync/* 24bpp formats */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync/* 16bpp formats */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync/* 8bpp formats */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync/* 4bpp formats */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync/* 1bpp formats */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * For dynamic indexed visuals (GrayScale and PseudoColor), these control the
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * selection of colors allocated for drawing to Pictures. The default
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * policy depends on the size of the colormap:
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * Size Default Policy
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * ----------------------------
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * < 64 PolicyMono
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * < 256 PolicyGray
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * 256 PolicyColor (only on PseudoColor)
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * The actual allocation code lives in miindex.c, and so is
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * austensibly server dependent, but that code does:
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * PolicyMono Allocate no additional colors, use black and white
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * PolicyGray Allocate 13 gray levels (11 cells used)
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * PolicyColor Allocate a 4x4x4 cube and 13 gray levels (71 cells used)
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * PolicyAll Allocate as big a cube as possible, fill with gray (all)
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * Here's a picture to help understand how many colors are
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * actually allocated (this is just the gray ramp):
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * gray level
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * all 0000 1555 2aaa 4000 5555 6aaa 8000 9555 aaaa bfff d555 eaaa ffff
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * b/w 0000 ffff
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * 4x4x4 5555 aaaa
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * extra 1555 2aaa 4000 6aaa 8000 9555 bfff d555 eaaa
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * The default colormap supplies two gray levels (black/white), the
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * 4x4x4 cube allocates another two and nine more are allocated to fill
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * in the 13 levels. When the 4x4x4 cube is not allocated, a total of
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * 11 cells are allocated.
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT int PictureParseCmapPolicy (const char *name);
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT DevPrivateKey RenderClientPrivateKey;
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync/* Fixed point updates from Carl Worth, USC, Information Sciences Institute */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * An unadorned "xFixed" is the same as xFixed_16_16,
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * (since it's quite common in the code)
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync/* whether 't' is a well defined not obviously empty trapezoid */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#define xTrapezoidValid(t) ((t)->left.p1.y != (t)->left.p2.y && \
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * Standard NTSC luminance conversions:
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * y = r * 0.299 + g * 0.587 + b * 0.114
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * Approximate this for a bit more speed:
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * y = (r * 153 + g * 301 + b * 58) / 512
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * This gives 17 bits of luminance; to get 15 bits, lop the low two
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#define CvtR8G8B8toY15(s) (((((s) >> 16) & 0xff) * 153 + \
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#endif /* _PICTURE_H_ */