xenocara/xserver/fb/fbtrap.c

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/*
* 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.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include "fb.h"
#include "picturestr.h"
#include "mipict.h"
#include "fbpict.h"
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#include "damage.h"
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void
fbAddTraps(PicturePtr pPicture,
INT16 x_off, INT16 y_off, int ntrap, xTrap * traps)
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{
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pixman_image_t *image;
int dst_xoff, dst_yoff;
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if (!(image = image_from_pict(pPicture, FALSE, &dst_xoff, &dst_yoff)))
return;
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pixman_add_traps(image, x_off + dst_xoff, y_off + dst_yoff,
ntrap, (pixman_trap_t *) traps);
free_pixman_pict(pPicture, image);
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}
void
fbRasterizeTrapezoid(PicturePtr pPicture,
xTrapezoid * trap, int x_off, int y_off)
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{
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pixman_image_t *image;
int dst_xoff, dst_yoff;
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if (!(image = image_from_pict(pPicture, FALSE, &dst_xoff, &dst_yoff)))
return;
pixman_rasterize_trapezoid(image, (pixman_trapezoid_t *) trap,
x_off + dst_xoff, y_off + dst_yoff);
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free_pixman_pict(pPicture, image);
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}
void
fbAddTriangles(PicturePtr pPicture,
INT16 x_off, INT16 y_off, int ntri, xTriangle * tris)
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{
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pixman_image_t *image;
int dst_xoff, dst_yoff;
if (!(image = image_from_pict(pPicture, FALSE, &dst_xoff, &dst_yoff)))
return;
pixman_add_triangles(image,
dst_xoff + x_off, dst_yoff + y_off,
ntri, (pixman_triangle_t *) tris);
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free_pixman_pict(pPicture, image);
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}
typedef void (*CompositeShapesFunc) (pixman_op_t op,
pixman_image_t * src,
pixman_image_t * dst,
pixman_format_code_t mask_format,
int x_src, int y_src,
int x_dst, int y_dst,
int n_shapes, const uint8_t * shapes);
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static void
fbShapes(CompositeShapesFunc composite,
pixman_op_t op,
PicturePtr pSrc,
PicturePtr pDst,
PictFormatPtr maskFormat,
int16_t xSrc,
int16_t ySrc, int nshapes, int shape_size, const uint8_t * shapes)
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{
pixman_image_t *src, *dst;
int src_xoff, src_yoff;
int dst_xoff, dst_yoff;
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miCompositeSourceValidate(pSrc);
src = image_from_pict(pSrc, FALSE, &src_xoff, &src_yoff);
dst = image_from_pict(pDst, TRUE, &dst_xoff, &dst_yoff);
if (src && dst) {
pixman_format_code_t format;
DamageRegionAppend(pDst->pDrawable, pDst->pCompositeClip);
if (!maskFormat) {
int i;
if (pDst->polyEdge == PolyEdgeSharp)
format = PIXMAN_a1;
else
format = PIXMAN_a8;
for (i = 0; i < nshapes; ++i) {
composite(op, src, dst, format,
xSrc + src_xoff,
ySrc + src_yoff,
dst_xoff, dst_yoff, 1, shapes + i * shape_size);
}
}
else {
switch (PICT_FORMAT_A(maskFormat->format)) {
case 1:
format = PIXMAN_a1;
break;
case 4:
format = PIXMAN_a4;
break;
default:
case 8:
format = PIXMAN_a8;
break;
}
composite(op, src, dst, format,
xSrc + src_xoff,
ySrc + src_yoff, dst_xoff, dst_yoff, nshapes, shapes);
}
DamageRegionProcessPending(pDst->pDrawable);
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}
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free_pixman_pict(pSrc, src);
free_pixman_pict(pDst, dst);
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}
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void
fbTrapezoids(CARD8 op,
PicturePtr pSrc,
PicturePtr pDst,
PictFormatPtr maskFormat,
INT16 xSrc, INT16 ySrc, int ntrap, xTrapezoid * traps)
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{
xSrc -= (traps[0].left.p1.x >> 16);
ySrc -= (traps[0].left.p1.y >> 16);
fbShapes((CompositeShapesFunc) pixman_composite_trapezoids,
op, pSrc, pDst, maskFormat,
xSrc, ySrc, ntrap, sizeof(xTrapezoid), (const uint8_t *) traps);
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}
void
fbTriangles(CARD8 op,
PicturePtr pSrc,
PicturePtr pDst,
PictFormatPtr maskFormat,
INT16 xSrc, INT16 ySrc, int ntris, xTriangle * tris)
{
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xSrc -= (tris[0].p1.x >> 16);
ySrc -= (tris[0].p1.y >> 16);
fbShapes((CompositeShapesFunc) pixman_composite_triangles,
op, pSrc, pDst, maskFormat,
xSrc, ySrc, ntris, sizeof(xTriangle), (const uint8_t *) tris);
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}