1 /*
2 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
3 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice including the dates of first publication and
13 * either this permission notice or a reference to
14 * http://oss.sgi.com/projects/FreeB/
15 * shall be included in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
21 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
22 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 * Except as contained in this notice, the name of Silicon Graphics, Inc.
26 * shall not be used in advertising or otherwise to promote the sale, use or
27 * other dealings in this Software without prior written authorization from
28 * Silicon Graphics, Inc.
29 */
30
31 #ifdef HAVE_DMX_CONFIG_H
32 #include <dmx-config.h>
33 #endif
34
35 #include "glxserver.h"
36 #include "glxvisuals.h"
37
38 int
glxVisualsMatch(__GLXvisualConfig * v1,__GLXvisualConfig * v2)39 glxVisualsMatch(__GLXvisualConfig * v1, __GLXvisualConfig * v2)
40 {
41 if ((v1->class == v2->class) &&
42 (v1->rgba == v2->rgba) &&
43 (v1->redSize == v2->redSize) &&
44 (v1->greenSize == v2->greenSize) &&
45 (v1->blueSize == v2->blueSize) &&
46 (v1->alphaSize == v2->alphaSize) &&
47 (v1->redMask == v2->redMask) &&
48 (v1->greenMask == v2->greenMask) &&
49 (v1->blueMask == v2->blueMask) &&
50 (v1->alphaMask == v2->alphaMask) &&
51 (v1->accumRedSize == v2->accumRedSize) &&
52 (v1->accumGreenSize == v2->accumGreenSize) &&
53 (v1->accumBlueSize == v2->accumBlueSize) &&
54 (v1->accumAlphaSize == v2->accumAlphaSize) &&
55 (v1->doubleBuffer == v2->doubleBuffer) &&
56 (v1->stereo == v2->stereo) &&
57 (v1->bufferSize == v2->bufferSize) &&
58 (v1->depthSize == v2->depthSize) &&
59 (v1->stencilSize == v2->stencilSize) &&
60 (v1->auxBuffers == v2->auxBuffers) &&
61 (v1->level == v2->level) &&
62 (v1->visualRating == v2->visualRating) &&
63 (v1->transparentPixel == v2->transparentPixel) &&
64 (v1->transparentRed == v2->transparentRed) &&
65 (v1->transparentGreen == v2->transparentGreen) &&
66 (v1->transparentBlue == v2->transparentBlue) &&
67 (v1->transparentAlpha == v2->transparentAlpha) &&
68 (v1->transparentIndex == v2->transparentIndex) &&
69 (v1->multiSampleSize == v2->multiSampleSize) &&
70 (v1->nMultiSampleBuffers == v2->nMultiSampleBuffers) &&
71 (v1->visualSelectGroup == v2->visualSelectGroup)) {
72
73 return 1;
74
75 }
76
77 return 0;
78
79 }
80
81 VisualID
glxMatchGLXVisualInConfigList(__GLXvisualConfig * pGlxVisual,__GLXvisualConfig * configs,int nconfigs)82 glxMatchGLXVisualInConfigList(__GLXvisualConfig * pGlxVisual,
83 __GLXvisualConfig * configs, int nconfigs)
84 {
85 int i;
86
87 for (i = 0; i < nconfigs; i++) {
88
89 if (glxVisualsMatch(pGlxVisual, &configs[i])) {
90
91 return configs[i].vid;
92
93 }
94 }
95
96 return 0;
97 }
98
99 VisualID
glxMatchVisualInConfigList(ScreenPtr pScreen,VisualPtr pVisual,__GLXvisualConfig * configs,int nconfigs)100 glxMatchVisualInConfigList(ScreenPtr pScreen, VisualPtr pVisual,
101 __GLXvisualConfig * configs, int nconfigs)
102 {
103 __GLXscreenInfo *pGlxScreen;
104 __GLXvisualConfig *pGlxVisual;
105 int i;
106
107 /* check that the glx extension has been initialized */
108 if (!__glXActiveScreens)
109 return 0;
110
111 pGlxScreen = &__glXActiveScreens[pScreen->myNum];
112 pGlxVisual = pGlxScreen->pGlxVisual;
113
114 /* find the glx visual info for pVisual */
115 for (i = 0; i < pGlxScreen->numVisuals; i++, pGlxVisual++) {
116 if (pGlxVisual->vid == pVisual->vid) {
117 break;
118 }
119 }
120 if (i == pGlxScreen->numVisuals) {
121 /*
122 * the visual is not supported by glx
123 */
124 return 0;
125 }
126
127 return (glxMatchGLXVisualInConfigList(pGlxVisual, configs, nconfigs));
128 }
129
130 VisualPtr
glxMatchVisual(ScreenPtr pScreen,VisualPtr pVisual,ScreenPtr pMatchScreen)131 glxMatchVisual(ScreenPtr pScreen, VisualPtr pVisual, ScreenPtr pMatchScreen)
132 {
133 __GLXscreenInfo *pGlxScreen2;
134 int j;
135 VisualID vid;
136
137 /* check that the glx extension has been initialized */
138 if (!__glXActiveScreens)
139 return NULL;
140
141 pGlxScreen2 = &__glXActiveScreens[pMatchScreen->myNum];
142
143 vid = glxMatchVisualInConfigList(pScreen, pVisual,
144 pGlxScreen2->pGlxVisual,
145 pGlxScreen2->numVisuals);
146 if (vid) {
147 /*
148 * find the X visual of the matching glx visual
149 */
150 for (j = 0; j < pMatchScreen->numVisuals; j++) {
151 if (vid == pMatchScreen->visuals[j].vid) {
152 return &pMatchScreen->visuals[j];
153 }
154 }
155 }
156
157 return 0;
158 }
159