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
50 extern VisualID glxMatchVisualInConfigList(ScreenPtr pScreen,
51 VisualPtr pVisual,
52 __GLXvisualConfig * configs,
53 int nconfigs);
54
55 static Visual *
dmxLookupGLXVisual(ScreenPtr pScreen,VisualPtr pVisual)56 dmxLookupGLXVisual(ScreenPtr pScreen, VisualPtr pVisual)
57 {
58 DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
59 int j;
60 VisualID vid;
61
62 vid = glxMatchVisualInConfigList(pScreen, pVisual,
63 dmxScreen->glxVisuals,
64 dmxScreen->numGlxVisuals);
65 if (vid) {
66 /* Find the X visual of the matching GLX visual */
67 for (j = 0; j < dmxScreen->beNumVisuals; j++)
68 if (vid == dmxScreen->beVisuals[j].visualid)
69 return dmxScreen->beVisuals[j].visual;
70 }
71
72 /* No matching visual found */
73 return NULL;
74 }
75 #endif
76
77 /** Return the visual that matched \a pVisual. */
78 Visual *
dmxLookupVisual(ScreenPtr pScreen,VisualPtr pVisual)79 dmxLookupVisual(ScreenPtr pScreen, VisualPtr pVisual)
80 {
81 DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
82 int i;
83
84 #ifdef GLXEXT
85 Visual *retval;
86 #endif
87
88 if (!dmxScreen->beDisplay)
89 return NULL;
90
91 #ifdef GLXEXT
92 if ((retval = dmxLookupGLXVisual(pScreen, pVisual)))
93 return retval;
94 #endif
95
96 for (i = 0; i < dmxScreen->beNumVisuals; i++) {
97 if (pVisual->class == dmxScreen->beVisuals[i].class &&
98 pVisual->bitsPerRGBValue == dmxScreen->beVisuals[i].bits_per_rgb &&
99 pVisual->ColormapEntries == dmxScreen->beVisuals[i].colormap_size &&
100 pVisual->nplanes == dmxScreen->beVisuals[i].depth &&
101 pVisual->redMask == dmxScreen->beVisuals[i].red_mask &&
102 pVisual->greenMask == dmxScreen->beVisuals[i].green_mask &&
103 pVisual->blueMask == dmxScreen->beVisuals[i].blue_mask) {
104 return dmxScreen->beVisuals[i].visual;
105 }
106 }
107
108 return NULL;
109 }
110
111 /** Return the visual that matched the \a vid. */
112 Visual *
dmxLookupVisualFromID(ScreenPtr pScreen,VisualID vid)113 dmxLookupVisualFromID(ScreenPtr pScreen, VisualID vid)
114 {
115 Visual *visual;
116 int i;
117
118 if (!dmxScreens[pScreen->myNum].beDisplay)
119 return NULL;
120
121 for (i = 0; i < pScreen->numVisuals; i++) {
122 if (pScreen->visuals[i].vid == vid) {
123 visual = dmxLookupVisual(pScreen, &pScreen->visuals[i]);
124 if (visual)
125 return visual;
126 }
127 }
128
129 return NULL;
130 }
131
132 /** Return the colormap for the \a visual. */
133 Colormap
dmxColormapFromDefaultVisual(ScreenPtr pScreen,Visual * visual)134 dmxColormapFromDefaultVisual(ScreenPtr pScreen, Visual * visual)
135 {
136 DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
137 int i;
138
139 if (dmxScreen->beDisplay) {
140 for (i = 0; i < dmxScreen->beNumDefColormaps; i++)
141 if (visual == dmxScreen->beVisuals[i].visual)
142 return dmxScreen->beDefColormaps[i];
143 }
144
145 return None;
146 }
147