aboutsummaryrefslogtreecommitdiff
path: root/nx-X11/programs/Xserver/hw/nxagent/X/NXmitrap.c.NX.original
blob: 124356427d7b968bade8540cb1c69780a2392f40 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
/**************************************************************************/
/*                                                                        */
/* Copyright (c) 2001, 2009 NoMachine, http://www.nomachine.com/.         */
/*                                                                        */
/* NXAGENT, NX protocol compression and NX extensions to this software    */
/* are copyright of NoMachine. Redistribution and use of the present      */
/* software is allowed according to terms specified in the file LICENSE   */
/* which comes in the source distribution.                                */
/*                                                                        */
/* Check http://www.nomachine.com/licensing.html for applicability.       */
/*                                                                        */
/* NX and NoMachine are trademarks of Medialogic S.p.A.                   */
/*                                                                        */
/* All rights reserved.                                                   */
/*                                                                        */
/**************************************************************************/

/*
 * $XFree86: xc/programs/Xserver/render/mitrap.c,v 1.8 2002/09/03 19:28:28 keithp Exp $
 *
 * Copyright © 2002 Keith Packard, member of The XFree86 Project, Inc.
 *
 * 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 "scrnintstr.h"
#include "gcstruct.h"
#include "pixmapstr.h"
#include "windowstr.h"
#include "servermd.h"
#include "mi.h"
#include "picturestr.h"
#include "mipict.h"

#ifdef NXAGENT_SERVER

#include "Render.h"

#endif

PicturePtr
miCreateAlphaPicture (ScreenPtr	    pScreen, 
		      PicturePtr    pDst,
		      PictFormatPtr pPictFormat,
		      CARD16	    width,
		      CARD16	    height)
{
    PixmapPtr	    pPixmap;
    PicturePtr	    pPicture;
    GCPtr	    pGC;
    int		    error;
    xRectangle	    rect;

    if (width > 32767 || height > 32767)
	return 0;

    if (!pPictFormat)
    {
	if (pDst->polyEdge == PolyEdgeSharp)
	    pPictFormat = PictureMatchFormat (pScreen, 1, PICT_a1);
	else
	    pPictFormat = PictureMatchFormat (pScreen, 8, PICT_a8);
	if (!pPictFormat)
	    return 0;
    }

    pPixmap = (*pScreen->CreatePixmap) (pScreen, width, height, 
					pPictFormat->depth);
    if (!pPixmap)
	return 0;
    pGC = GetScratchGC (pPixmap->drawable.depth, pScreen);
    if (!pGC)
    {
	(*pScreen->DestroyPixmap) (pPixmap);
	return 0;
    }
    ValidateGC (&pPixmap->drawable, pGC);
    rect.x = 0;
    rect.y = 0;
    rect.width = width;
    rect.height = height;
    (*pGC->ops->PolyFillRect)(&pPixmap->drawable, pGC, 1, &rect);
    FreeScratchGC (pGC);
    pPicture = CreatePicture (0, &pPixmap->drawable, pPictFormat,
			      0, 0, serverClient, &error);
    (*pScreen->DestroyPixmap) (pPixmap);
    return pPicture;
}

static xFixed
miLineFixedX (xLineFixed *l, xFixed y, Bool ceil)
{
    xFixed	    dx = l->p2.x - l->p1.x;
    xFixed_32_32    ex = (xFixed_32_32) (y - l->p1.y) * dx;
    xFixed	    dy = l->p2.y - l->p1.y;
    if (ceil)
	ex += (dy - 1);
    return l->p1.x + (xFixed) (ex / dy);
}

void
miTrapezoidBounds (int ntrap, xTrapezoid *traps, BoxPtr box)
{
    box->y1 = MAXSHORT;
    box->y2 = MINSHORT;
    box->x1 = MAXSHORT;
    box->x2 = MINSHORT;
    for (; ntrap; ntrap--, traps++)
    {
	INT16 x1, y1, x2, y2;

	if (!xTrapezoidValid(traps))
	    continue;
	y1 = xFixedToInt (traps->top);
	if (y1 < box->y1)
	    box->y1 = y1;
	
	y2 = xFixedToInt (xFixedCeil (traps->bottom));
	if (y2 > box->y2)
	    box->y2 = y2;
	
	x1 = xFixedToInt (min (miLineFixedX (&traps->left, traps->top, FALSE),
			       miLineFixedX (&traps->left, traps->bottom, FALSE)));
	if (x1 < box->x1)
	    box->x1 = x1;
	
	x2 = xFixedToInt (xFixedCeil (max (miLineFixedX (&traps->right, traps->top, TRUE),
					   miLineFixedX (&traps->right, traps->bottom, TRUE))));
	if (x2 > box->x2)
	    box->x2 = x2;
    }
}

void
miTrapezoids (CARD8	    op,
	      PicturePtr    pSrc,
	      PicturePtr    pDst,
	      PictFormatPtr maskFormat,
	      INT16	    xSrc,
	      INT16	    ySrc,
	      int	    ntrap,
	      xTrapezoid    *traps)
{
    ScreenPtr		pScreen = pDst->pDrawable->pScreen;
    PictureScreenPtr    ps = GetPictureScreen(pScreen);

    /*
     * Check for solid alpha add
     */
    if (op == PictOpAdd && miIsSolidAlpha (pSrc))
    {
	for (; ntrap; ntrap--, traps++)
	    (*ps->RasterizeTrapezoid) (pDst, traps, 0, 0);
    } 
    else if (maskFormat)
    {
	PicturePtr	pPicture;
	BoxRec		bounds;
	INT16		xDst, yDst;
	INT16		xRel, yRel;
	
	xDst = traps[0].left.p1.x >> 16;
	yDst = traps[0].left.p1.y >> 16;

        #ifdef NXAGENT_SERVER

        if (nxagentTrapezoidExtents != NullBox)
        {
          memcpy(&bounds, nxagentTrapezoidExtents, sizeof(BoxRec));
        }
        else
        {
          nxagentTrapezoidExtents = (BoxPtr) xalloc(sizeof(BoxRec));

          miTrapezoidBounds (ntrap, traps, &bounds);

          memcpy(nxagentTrapezoidExtents, &bounds, sizeof(BoxRec));
        }

        #else

        miTrapezoidBounds (ntrap, traps, &bounds);

        #endif

	if (bounds.y1 >= bounds.y2 || bounds.x1 >= bounds.x2)
	    return;
	pPicture = miCreateAlphaPicture (pScreen, pDst, maskFormat,
					 bounds.x2 - bounds.x1,
					 bounds.y2 - bounds.y1);
	if (!pPicture)
	    return;
	for (; ntrap; ntrap--, traps++)
	    (*ps->RasterizeTrapezoid) (pPicture, traps, 
				       -bounds.x1, -bounds.y1);
	xRel = bounds.x1 + xSrc - xDst;
	yRel = bounds.y1 + ySrc - yDst;
	CompositePicture (op, pSrc, pPicture, pDst,
			  xRel, yRel, 0, 0, bounds.x1, bounds.y1,
			  bounds.x2 - bounds.x1,
			  bounds.y2 - bounds.y1);
	FreePicture (pPicture, 0);
    }
    else
    {
	if (pDst->polyEdge == PolyEdgeSharp)
	    maskFormat = PictureMatchFormat (pScreen, 1, PICT_a1);
	else
	    maskFormat = PictureMatchFormat (pScreen, 8, PICT_a8);
	for (; ntrap; ntrap--, traps++)
	    miTrapezoids (op, pSrc, pDst, maskFormat, xSrc, ySrc, 1, traps);
    }
}