Home | History | Annotate | Line # | Download | only in dmx 
      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 (at) 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 {
     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. */
     77 Visual *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. */
    109 Visual *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. */
    128 Colormap 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