1/*
2 * Copyright 2002-2004 Red Hat Inc., Durham, North Carolina.
3 *
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation on the rights to use, copy, modify, merge,
10 * publish, distribute, sublicense, and/or sell copies of the Software,
11 * and to permit persons to whom the Software is furnished to do so,
12 * subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial
16 * portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21 * NON-INFRINGEMENT.  IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
22 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
23 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
24 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
25 * SOFTWARE.
26 */
27
28/*
29 * Authors:
30 *   Kevin E. Martin <kem@redhat.com>
31 *
32 */
33
34/** \file
35 * This file provides support for visuals. */
36
37#ifdef HAVE_DMX_CONFIG_H
38#include <dmx-config.h>
39#endif
40
41#include "dmx.h"
42#include "dmxvisual.h"
43
44#include "scrnintstr.h"
45
46#ifdef GLXEXT
47
48#include <GL/glxint.h>
49
50extern VisualID glxMatchVisualInConfigList(ScreenPtr pScreen,
51					   VisualPtr pVisual,
52					   __GLXvisualConfig *configs,
53					   int nconfigs);
54
55static Visual *dmxLookupGLXVisual(ScreenPtr pScreen, VisualPtr pVisual)
56{
57    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
58    int            j;
59    VisualID       vid;
60
61    vid = glxMatchVisualInConfigList(pScreen, pVisual,
62				     dmxScreen->glxVisuals,
63				     dmxScreen->numGlxVisuals);
64    if (vid) {
65	/* Find the X visual of the matching GLX visual */
66	for (j = 0; j < dmxScreen->beNumVisuals; j++)
67	    if (vid == dmxScreen->beVisuals[j].visualid)
68		return dmxScreen->beVisuals[j].visual;
69    }
70
71    /* No matching visual found */
72    return NULL;
73}
74#endif
75
76/** Return the visual that matched \a pVisual. */
77Visual *dmxLookupVisual(ScreenPtr pScreen, VisualPtr pVisual)
78{
79    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
80    int            i;
81#ifdef GLXEXT
82    Visual        *retval;
83#endif
84
85    if (!dmxScreen->beDisplay)
86	return NULL;
87
88#ifdef GLXEXT
89    if ((retval = dmxLookupGLXVisual(pScreen, pVisual)))
90	return retval;
91#endif
92
93    for (i = 0; i < dmxScreen->beNumVisuals; i++) {
94	if (pVisual->class == dmxScreen->beVisuals[i].class &&
95	    pVisual->bitsPerRGBValue == dmxScreen->beVisuals[i].bits_per_rgb &&
96	    pVisual->ColormapEntries == dmxScreen->beVisuals[i].colormap_size &&
97	    pVisual->nplanes == dmxScreen->beVisuals[i].depth &&
98	    pVisual->redMask == dmxScreen->beVisuals[i].red_mask &&
99	    pVisual->greenMask == dmxScreen->beVisuals[i].green_mask &&
100	    pVisual->blueMask == dmxScreen->beVisuals[i].blue_mask) {
101	    return dmxScreen->beVisuals[i].visual;
102	}
103    }
104
105    return NULL;
106}
107
108/** Return the visual that matched the \a vid. */
109Visual *dmxLookupVisualFromID(ScreenPtr pScreen, VisualID vid)
110{
111    Visual *visual;
112    int     i;
113
114    if (!dmxScreens[pScreen->myNum].beDisplay)
115	return NULL;
116
117    for (i = 0; i < pScreen->numVisuals; i++) {
118	if (pScreen->visuals[i].vid == vid) {
119	    visual = dmxLookupVisual(pScreen, &pScreen->visuals[i]);
120	    if (visual) return visual;
121	}
122    }
123
124    return NULL;
125}
126
127/** Return the colormap for the \a visual. */
128Colormap dmxColormapFromDefaultVisual(ScreenPtr pScreen, Visual *visual)
129{
130    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
131    int            i;
132
133    if (dmxScreen->beDisplay) {
134	for (i = 0; i < dmxScreen->beNumDefColormaps; i++)
135	    if (visual == dmxScreen->beVisuals[i].visual)
136		return dmxScreen->beDefColormaps[i];
137    }
138
139    return None;
140}
141