2d6a8f6683
This rolls up the following commits and also keeps the image_from_pict API compatiblity. It introduces a new image_from_pict_18 API that is used by the server leaving the old API alone. I've rolled this up as I don't want to introduce ABI breaks in bisection.a72c65e917fb: Adjust transform or composite coordinates for pixman operationsbd567061c8Split fbGetDrawable into fbGetDrawablePixmap and fbGetPixmapBitsData6133505297Revert "Fix clipping when windows are used as sources"071b3c1810Revert "Use IncludeInferiors when copying windows before compositing."8e640d6b13Revert "Reserve space for two GC values in copy_drawable()." Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
164 lines
4.0 KiB
C
164 lines
4.0 KiB
C
/*
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* Copyright © 2004 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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#ifdef RENDER
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#include "picturestr.h"
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#include "mipict.h"
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#include "renderedge.h"
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#include "fbpict.h"
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void
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fbAddTraps (PicturePtr pPicture,
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INT16 x_off,
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INT16 y_off,
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int ntrap,
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xTrap *traps)
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{
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int image_xoff, image_yoff;
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pixman_image_t *image = image_from_pict_18 (pPicture, FALSE, &image_xoff, &image_yoff);
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if (!image)
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return;
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pixman_add_traps (image, x_off, y_off, ntrap, (pixman_trap_t *)traps);
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free_pixman_pict (pPicture, image);
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}
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void
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fbRasterizeTrapezoid (PicturePtr pPicture,
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xTrapezoid *trap,
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int x_off,
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int y_off)
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{
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int mask_xoff, mask_yoff;
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pixman_image_t *image = image_from_pict_18 (pPicture, FALSE, &mask_xoff, &mask_yoff);
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if (!image)
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return;
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pixman_rasterize_trapezoid (image, (pixman_trapezoid_t *)trap, x_off, y_off);
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free_pixman_pict (pPicture, image);
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}
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static int
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_GreaterY (xPointFixed *a, xPointFixed *b)
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{
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if (a->y == b->y)
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return a->x > b->x;
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return a->y > b->y;
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}
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/*
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* Note that the definition of this function is a bit odd because
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* of the X coordinate space (y increasing downwards).
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*/
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static int
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_Clockwise (xPointFixed *ref, xPointFixed *a, xPointFixed *b)
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{
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xPointFixed ad, bd;
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ad.x = a->x - ref->x;
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ad.y = a->y - ref->y;
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bd.x = b->x - ref->x;
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bd.y = b->y - ref->y;
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return ((xFixed_32_32) bd.y * ad.x - (xFixed_32_32) ad.y * bd.x) < 0;
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}
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/* FIXME -- this could be made more efficient */
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void
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fbAddTriangles (PicturePtr pPicture,
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INT16 x_off,
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INT16 y_off,
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int ntri,
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xTriangle *tris)
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{
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xPointFixed *top, *left, *right, *tmp;
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xTrapezoid trap;
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for (; ntri; ntri--, tris++)
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{
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top = &tris->p1;
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left = &tris->p2;
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right = &tris->p3;
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if (_GreaterY (top, left)) {
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tmp = left; left = top; top = tmp;
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}
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if (_GreaterY (top, right)) {
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tmp = right; right = top; top = tmp;
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}
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if (_Clockwise (top, right, left)) {
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tmp = right; right = left; left = tmp;
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}
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/*
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* Two cases:
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*
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* + +
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* / \ / \
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* / \ / \
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* / + + \
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* / -- -- \
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* / -- -- \
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* / --- --- \
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* +-- --+
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*/
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trap.top = top->y;
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trap.left.p1 = *top;
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trap.left.p2 = *left;
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trap.right.p1 = *top;
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trap.right.p2 = *right;
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if (right->y < left->y)
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trap.bottom = right->y;
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else
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trap.bottom = left->y;
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fbRasterizeTrapezoid (pPicture, &trap, x_off, y_off);
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if (right->y < left->y)
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{
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trap.top = right->y;
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trap.bottom = left->y;
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trap.right.p1 = *right;
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trap.right.p2 = *left;
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}
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else
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{
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trap.top = left->y;
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trap.bottom = right->y;
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trap.left.p1 = *left;
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trap.left.p2 = *right;
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}
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fbRasterizeTrapezoid (pPicture, &trap, x_off, y_off);
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}
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}
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#endif /* RENDER */
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