libX11 xserver fontconfig mesa pixman xkbcomp xkeyboard-config git update

23 Mar 2012

1 files changed, 538 insertions, 550 deletions

diff --git a/xorg-server/hw/xquartz/GL/glcontextmodes.c b/xorg-server/hw/xquartz/GL/glcontextmodes.c
index 52a9ca440..79fadf876 100644
--- a/xorg-server/hw/xquartz/GL/glcontextmodes.c
+++ b/xorg-server/hw/xquartz/GL/glcontextmodes.c
@@ -1,550 +1,538 @@
-/*

- * (C) Copyright IBM Corporation 2003

- * All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * on the rights to use, copy, modify, merge, publish, distribute, sub

- * license, and/or sell copies of the Software, and to permit persons to whom

- * the Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice (including the next

- * paragraph) shall be included in all copies or substantial portions of the

- * Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL

- * VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,

- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR

- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE

- * USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/**

- * \file glcontextmodes.c

- * Utility routines for working with \c __GLcontextModes structures.  At

- * some point most or all of these functions will be moved to the Mesa

- * code base.

- *

- * \author Ian Romanick <idr@us.ibm.com>

- */

-

-#if defined(IN_MINI_GLX)

-#include <GL/gl.h>

-#else

-#if defined(HAVE_DIX_CONFIG_H)

-# include <dix-config.h>

-#endif

-#include <X11/X.h>

-#include <GL/glx.h>

-#include "GL/glxint.h"

-#endif

-

-/* Memory macros */

-#if defined(IN_MINI_GLX)

-# include <stdlib.h>

-# include <string.h>

-# define _mesa_malloc(b) malloc(b)

-# define _mesa_free(m) free(m)

-# define _mesa_memset  memset

-#else

-# ifdef XFree86Server

-# include <os.h>

-# include <string.h>

-#  define _mesa_malloc(b) malloc(b)

-#  define _mesa_free(m)   free(m)

-#  define _mesa_memset   memset

-# else

-#  include <X11/Xlibint.h>

-#  define _mesa_memset memset

-#  define _mesa_malloc(b) Xmalloc(b)

-#  define _mesa_free(m) free(m)

-# endif /* XFree86Server */

-#endif /* !defined(IN_MINI_GLX) */

-

-#include "glcontextmodes.h"

-

-#if !defined(IN_MINI_GLX)

-#define NUM_VISUAL_TYPES   6

-

-/**

- * Convert an X visual type to a GLX visual type.

- * 

- * \param visualType X visual type (i.e., \c TrueColor, \c StaticGray, etc.)

- *        to be converted.

- * \return If \c visualType is a valid X visual type, a GLX visual type will

- *         be returned.  Otherwise \c GLX_NONE will be returned.

- */

-GLint

-_gl_convert_from_x_visual_type( int visualType )

-{

-    static const int glx_visual_types[ NUM_VISUAL_TYPES ] = {

-	GLX_STATIC_GRAY,  GLX_GRAY_SCALE,

-	GLX_STATIC_COLOR, GLX_PSEUDO_COLOR,

-	GLX_TRUE_COLOR,   GLX_DIRECT_COLOR

-    };

-

-    return ( (unsigned) visualType < NUM_VISUAL_TYPES )

-	? glx_visual_types[ visualType ] : GLX_NONE;

-}

-

-

-/**

- * Convert a GLX visual type to an X visual type.

- * 

- * \param visualType GLX visual type (i.e., \c GLX_TRUE_COLOR, 

- *                   \c GLX_STATIC_GRAY, etc.) to be converted.

- * \return If \c visualType is a valid GLX visual type, an X visual type will

- *         be returned.  Otherwise -1 will be returned.

- */

-GLint

-_gl_convert_to_x_visual_type( int visualType )

-{

-    static const int x_visual_types[ NUM_VISUAL_TYPES ] = {

-	TrueColor,   DirectColor,

-	PseudoColor, StaticColor,

-	GrayScale,   StaticGray

-    };

-

-    return ( (unsigned) (visualType - GLX_TRUE_COLOR) < NUM_VISUAL_TYPES )

-	? x_visual_types[ visualType - GLX_TRUE_COLOR ] : -1;

-}

-

-

-/**

- * Copy a GLX visual config structure to a GL context mode structure.  All

- * of the fields in \c config are copied to \c mode.  Additional fields in

- * \c mode that can be derrived from the fields of \c config (i.e.,

- * \c haveDepthBuffer) are also filled in.  The remaining fields in \c mode

- * that cannot be derived are set to default values.

- * 

- * \param mode   Destination GL context mode.

- * \param config Source GLX visual config.

- * 

- * \note

- * The \c fbconfigID and \c visualID fields of the \c __GLcontextModes

- * structure will be set to the \c vid of the \c __GLXvisualConfig structure.

- */

-void

-_gl_copy_visual_to_context_mode( __GLcontextModes * mode,

-				 const __GLXvisualConfig * config )

-{

-    __GLcontextModes * const next = mode->next;

-

-    (void) _mesa_memset( mode, 0, sizeof( __GLcontextModes ) );

-    mode->next = next;

-

-    mode->visualID = config->vid;

-    mode->visualType = _gl_convert_from_x_visual_type( config->class );

-    mode->xRenderable = GL_TRUE;

-    mode->fbconfigID = config->vid;

-    mode->drawableType = GLX_WINDOW_BIT | GLX_PIXMAP_BIT;

-

-    mode->rgbMode = (config->rgba != 0);

-    mode->renderType = (mode->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT;

-

-    mode->colorIndexMode = !(mode->rgbMode);

-    mode->doubleBufferMode = (config->doubleBuffer != 0);

-    mode->stereoMode = (config->stereo != 0);

-

-    mode->haveAccumBuffer = ((config->accumRedSize +

-			      config->accumGreenSize +

-			      config->accumBlueSize +

-			      config->accumAlphaSize) > 0);

-    mode->haveDepthBuffer = (config->depthSize > 0);

-    mode->haveStencilBuffer = (config->stencilSize > 0);

-

-    mode->redBits = config->redSize;

-    mode->greenBits = config->greenSize;

-    mode->blueBits = config->blueSize;

-    mode->alphaBits = config->alphaSize;

-    mode->redMask = config->redMask;

-    mode->greenMask = config->greenMask;

-    mode->blueMask = config->blueMask;

-    mode->alphaMask = config->alphaMask;

-    mode->rgbBits = mode->rgbMode ? config->bufferSize : 0;

-    mode->indexBits = mode->colorIndexMode ? config->bufferSize : 0;

-

-    mode->accumRedBits = config->accumRedSize;

-    mode->accumGreenBits = config->accumGreenSize;

-    mode->accumBlueBits = config->accumBlueSize;

-    mode->accumAlphaBits = config->accumAlphaSize;

-    mode->depthBits = config->depthSize;

-    mode->stencilBits = config->stencilSize;

-

-    mode->numAuxBuffers = config->auxBuffers;

-    mode->level = config->level;

-

-    mode->visualRating = config->visualRating;

-    mode->transparentPixel = config->transparentPixel;

-    mode->transparentRed   = config->transparentRed;

-    mode->transparentGreen = config->transparentGreen;

-    mode->transparentBlue  = config->transparentBlue;

-    mode->transparentAlpha = config->transparentAlpha;

-    mode->transparentIndex = config->transparentIndex;

-    mode->samples = config->multiSampleSize;

-    mode->sampleBuffers = config->nMultiSampleBuffers;

-    /* mode->visualSelectGroup = config->visualSelectGroup; ? */

-

-    mode->swapMethod = GLX_SWAP_UNDEFINED_OML;

-

-    mode->bindToTextureRgb = (mode->rgbMode) ? GL_TRUE : GL_FALSE;

-    mode->bindToTextureRgba = (mode->rgbMode && mode->alphaBits) ?

-	GL_TRUE : GL_FALSE;

-    mode->bindToMipmapTexture = mode->rgbMode ? GL_TRUE : GL_FALSE;

-    mode->bindToTextureTargets = mode->rgbMode ?

-	GLX_TEXTURE_1D_BIT_EXT | GLX_TEXTURE_2D_BIT_EXT |

-	GLX_TEXTURE_RECTANGLE_BIT_EXT : 0;

-    mode->yInverted = GL_FALSE;

-}

-

-

-/**

- * Get data from a GL context mode.

- * 

- * \param mode         GL context mode whose data is to be returned.

- * \param attribute    Attribute of \c mode that is to be returned.

- * \param value_return Location to store the data member of \c mode.

- * \return  If \c attribute is a valid attribute of \c mode, zero is

- *          returned.  Otherwise \c GLX_BAD_ATTRIBUTE is returned.

- */

-int

-_gl_get_context_mode_data(const __GLcontextModes *mode, int attribute,

-			  int *value_return)

-{

-    switch (attribute) {

-      case GLX_USE_GL:

-	*value_return = GL_TRUE;

-	return 0;

-      case GLX_BUFFER_SIZE:

-	*value_return = mode->rgbBits;

-	return 0;

-      case GLX_RGBA:

-	*value_return = mode->rgbMode;

-	return 0;

-      case GLX_RED_SIZE:

-	*value_return = mode->redBits;

-	return 0;

-      case GLX_GREEN_SIZE:

-	*value_return = mode->greenBits;

-	return 0;

-      case GLX_BLUE_SIZE:

-	*value_return = mode->blueBits;

-	return 0;

-      case GLX_ALPHA_SIZE:

-	*value_return = mode->alphaBits;

-	return 0;

-      case GLX_DOUBLEBUFFER:

-	*value_return = mode->doubleBufferMode;

-	return 0;

-      case GLX_STEREO:

-	*value_return = mode->stereoMode;

-	return 0;

-      case GLX_AUX_BUFFERS:

-	*value_return = mode->numAuxBuffers;

-	return 0;

-      case GLX_DEPTH_SIZE:

-	*value_return = mode->depthBits;

-	return 0;

-      case GLX_STENCIL_SIZE:

-	*value_return = mode->stencilBits;

-	return 0;

-      case GLX_ACCUM_RED_SIZE:

-	*value_return = mode->accumRedBits;

-	return 0;

-      case GLX_ACCUM_GREEN_SIZE:

-	*value_return = mode->accumGreenBits;

-	return 0;

-      case GLX_ACCUM_BLUE_SIZE:

-	*value_return = mode->accumBlueBits;

-	return 0;

-      case GLX_ACCUM_ALPHA_SIZE:

-	*value_return = mode->accumAlphaBits;

-	return 0;

-      case GLX_LEVEL:

-	*value_return = mode->level;

-	return 0;

-      case GLX_TRANSPARENT_TYPE_EXT:

-	*value_return = mode->transparentPixel;

-	return 0;

-      case GLX_TRANSPARENT_RED_VALUE:

-	*value_return = mode->transparentRed;

-	return 0;

-      case GLX_TRANSPARENT_GREEN_VALUE:

-	*value_return = mode->transparentGreen;

-	return 0;

-      case GLX_TRANSPARENT_BLUE_VALUE:

-	*value_return = mode->transparentBlue;

-	return 0;

-      case GLX_TRANSPARENT_ALPHA_VALUE:

-	*value_return = mode->transparentAlpha;

-	return 0;

-      case GLX_TRANSPARENT_INDEX_VALUE:

-	*value_return = mode->transparentIndex;

-	return 0;

-      case GLX_X_VISUAL_TYPE:

-	*value_return = mode->visualType;

-	return 0;

-      case GLX_CONFIG_CAVEAT:

-	*value_return = mode->visualRating;

-	return 0;

-      case GLX_VISUAL_ID:

-	*value_return = mode->visualID;

-	return 0;

-      case GLX_DRAWABLE_TYPE:

-	*value_return = mode->drawableType;

-	return 0;

-      case GLX_RENDER_TYPE:

-	*value_return = mode->renderType;

-	return 0;

-      case GLX_X_RENDERABLE:

-	*value_return = mode->xRenderable;

-	return 0;

-      case GLX_FBCONFIG_ID:

-	*value_return = mode->fbconfigID;

-	return 0;

-      case GLX_MAX_PBUFFER_WIDTH:

-	*value_return = mode->maxPbufferWidth;

-	return 0;

-      case GLX_MAX_PBUFFER_HEIGHT:

-	*value_return = mode->maxPbufferHeight;

-	return 0;

-      case GLX_MAX_PBUFFER_PIXELS:

-	*value_return = mode->maxPbufferPixels;

-	return 0;

-      case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX:

-	*value_return = mode->optimalPbufferWidth;

-	return 0;

-      case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX:

-	*value_return = mode->optimalPbufferHeight;

-	return 0;

-      case GLX_SWAP_METHOD_OML:

-	*value_return = mode->swapMethod;

-	return 0;

-      case GLX_SAMPLE_BUFFERS_SGIS:

-	*value_return = mode->sampleBuffers;

-	return 0;

-      case GLX_SAMPLES_SGIS:

-	*value_return = mode->samples;

-	return 0;

-      case GLX_BIND_TO_TEXTURE_RGB_EXT:

-	*value_return = mode->bindToTextureRgb;

-	return 0;

-      case GLX_BIND_TO_TEXTURE_RGBA_EXT:

-	*value_return = mode->bindToTextureRgba;

-	return 0;

-      case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:

-	*value_return = mode->bindToMipmapTexture == GL_TRUE ? GL_TRUE :

-	    GL_FALSE;

-	return 0;

-      case GLX_BIND_TO_TEXTURE_TARGETS_EXT:

-	*value_return = mode->bindToTextureTargets;

-	return 0;

-      case GLX_Y_INVERTED_EXT:

-	*value_return = mode->yInverted;

-	return 0;

-

-      /* Applications are NOT allowed to query GLX_VISUAL_SELECT_GROUP_SGIX.

-       * It is ONLY for communication between the GLX client and the GLX

-       * server.

-       */

-      case GLX_VISUAL_SELECT_GROUP_SGIX:

-      default:

-	return GLX_BAD_ATTRIBUTE;

-    }

-}

-#endif /* !defined(IN_MINI_GLX) */

-

-

-/**

- * Allocate a linked list of \c __GLcontextModes structures.  The fields of

- * each structure will be initialized to "reasonable" default values.  In

- * most cases this is the default value defined by table 3.4 of the GLX

- * 1.3 specification.  This means that most values are either initialized to

- * zero or \c GLX_DONT_CARE (which is -1).  As support for additional

- * extensions is added, the new values will be initialized to appropriate

- * values from the extension specification.

- * 

- * \param count         Number of structures to allocate.

- * \param minimum_size  Minimum size of a structure to allocate.  This allows

- *                      for differences in the version of the

- *                      \c __GLcontextModes stucture used in libGL and in a

- *                      DRI-based driver.

- * \returns A pointer to the first element in a linked list of \c count

- *          stuctures on success, or \c NULL on failure.

- * 

- * \warning Use of \c minimum_size does \b not guarantee binary compatibility.

- *          The fundamental assumption is that if the \c minimum_size

- *          specified by the driver and the size of the \c __GLcontextModes

- *          structure in libGL is the same, then the meaning of each byte in

- *          the structure is the same in both places.  \b Be \b careful!

- *          Basically this means that fields have to be added in libGL and

- *          then propagated to drivers.  Drivers should \b never arbitrarilly

- *          extend the \c __GLcontextModes data-structure.

- */

-__GLcontextModes *

-_gl_context_modes_create( unsigned count, size_t minimum_size )

-{

-   const size_t size = (minimum_size > sizeof( __GLcontextModes ))

-       ? minimum_size : sizeof( __GLcontextModes );

-   __GLcontextModes * base = NULL;

-   __GLcontextModes ** next;

-   unsigned   i;

-

-   next = & base;

-   for ( i = 0 ; i < count ; i++ ) {

-      *next = (__GLcontextModes *) _mesa_malloc( size );

-      if ( *next == NULL ) {

-	 _gl_context_modes_destroy( base );

-	 base = NULL;

-	 break;

-      }

-      

-      (void) _mesa_memset( *next, 0, size );

-      (*next)->visualID = GLX_DONT_CARE;

-      (*next)->visualType = GLX_DONT_CARE;

-      (*next)->visualRating = GLX_NONE;

-      (*next)->transparentPixel = GLX_NONE;

-      (*next)->transparentRed = GLX_DONT_CARE;

-      (*next)->transparentGreen = GLX_DONT_CARE;

-      (*next)->transparentBlue = GLX_DONT_CARE;

-      (*next)->transparentAlpha = GLX_DONT_CARE;

-      (*next)->transparentIndex = GLX_DONT_CARE;

-      (*next)->xRenderable = GLX_DONT_CARE;

-      (*next)->fbconfigID = GLX_DONT_CARE;

-      (*next)->swapMethod = GLX_SWAP_UNDEFINED_OML;

-      (*next)->bindToTextureRgb = GLX_DONT_CARE;

-      (*next)->bindToTextureRgba = GLX_DONT_CARE;

-      (*next)->bindToMipmapTexture = GLX_DONT_CARE;

-      (*next)->bindToTextureTargets = GLX_DONT_CARE;

-      (*next)->yInverted = GLX_DONT_CARE;

-

-      next = & ((*next)->next);

-   }

-

-   return base;

-}

-

-

-/**

- * Destroy a linked list of \c __GLcontextModes structures created by

- * \c _gl_context_modes_create.

- * 

- * \param modes  Linked list of structures to be destroyed.  All structres

- *               in the list will be freed.

- */

-void

-_gl_context_modes_destroy( __GLcontextModes * modes )

-{

-   while ( modes != NULL ) {

-      __GLcontextModes * const next = modes->next;

-

-      _mesa_free( modes );

-      modes = next;

-   }

-}

-

-

-/**

- * Find a context mode matching a Visual ID.

- *

- * \param modes  List list of context-mode structures to be searched.

- * \param vid    Visual ID to be found.

- * \returns A pointer to a context-mode in \c modes if \c vid was found in

- *          the list, or \c NULL if it was not.

- */

-

-__GLcontextModes *

-_gl_context_modes_find_visual(__GLcontextModes *modes, int vid)

-{

-    __GLcontextModes *m;

-

-    for (m = modes; m != NULL; m = m->next)

-	if (m->visualID == vid)

-	    return m;

-

-    return NULL;

-}

-

-__GLcontextModes *

-_gl_context_modes_find_fbconfig(__GLcontextModes *modes, int fbid)

-{

-    __GLcontextModes *m;

-

-    for (m = modes; m != NULL; m = m->next)

-	if (m->fbconfigID == fbid)

-	    return m;

-

-    return NULL;

-}

-

-/**

- * Determine if two context-modes are the same.  This is intended to be used

- * by libGL implementations to compare to sets of driver generated FBconfigs.

- * 

- * \param a  Context-mode to be compared.

- * \param b  Context-mode to be compared.

- * \returns \c GL_TRUE if the two context-modes are the same.  \c GL_FALSE is

- *          returned otherwise.

- */

-GLboolean

-_gl_context_modes_are_same( const __GLcontextModes * a,

-			    const __GLcontextModes * b )

-{

-    return( (a->rgbMode == b->rgbMode) &&

-	    (a->floatMode == b->floatMode) &&

-	    (a->colorIndexMode == b->colorIndexMode) &&

-	    (a->doubleBufferMode == b->doubleBufferMode) &&

-	    (a->stereoMode == b->stereoMode) &&

-	    (a->redBits == b->redBits) &&

-	    (a->greenBits == b->greenBits) &&

-	    (a->blueBits == b->blueBits) &&

-	    (a->alphaBits == b->alphaBits) &&

-#if 0 /* For some reason these don't get set on the client-side in libGL. */

-	    (a->redMask == b->redMask) &&

-	    (a->greenMask == b->greenMask) &&

-	    (a->blueMask == b->blueMask) &&

-	    (a->alphaMask == b->alphaMask) &&

-#endif

-	    (a->rgbBits == b->rgbBits) &&

-	    (a->indexBits == b->indexBits) &&

-	    (a->accumRedBits == b->accumRedBits) &&

-	    (a->accumGreenBits == b->accumGreenBits) &&

-	    (a->accumBlueBits == b->accumBlueBits) &&

-	    (a->accumAlphaBits == b->accumAlphaBits) &&

-	    (a->depthBits == b->depthBits) &&

-	    (a->stencilBits == b->stencilBits) &&

-	    (a->numAuxBuffers == b->numAuxBuffers) &&

-	    (a->level == b->level) &&

-	    (a->pixmapMode == b->pixmapMode) &&

-	    (a->visualRating == b->visualRating) &&

-

-	    (a->transparentPixel == b->transparentPixel) &&

-

-	    ((a->transparentPixel != GLX_TRANSPARENT_RGB) ||

-	     ((a->transparentRed == b->transparentRed) &&

-	      (a->transparentGreen == b->transparentGreen) &&

-	      (a->transparentBlue == b->transparentBlue) &&

-	      (a->transparentAlpha == b->transparentAlpha))) &&

-

-	    ((a->transparentPixel != GLX_TRANSPARENT_INDEX) || 

-	     (a->transparentIndex == b->transparentIndex)) &&

-

-	    (a->sampleBuffers == b->sampleBuffers) &&

-	    (a->samples == b->samples) &&

-	    ((a->drawableType & b->drawableType) != 0) &&

-	    (a->renderType == b->renderType) &&

-	    (a->maxPbufferWidth == b->maxPbufferWidth) &&

-	    (a->maxPbufferHeight == b->maxPbufferHeight) &&

-	    (a->maxPbufferPixels == b->maxPbufferPixels) &&

-	    (a->optimalPbufferWidth == b->optimalPbufferWidth) &&

-	    (a->optimalPbufferHeight == b->optimalPbufferHeight) &&

-	    (a->swapMethod == b->swapMethod) &&

-	    (a->bindToTextureRgb == b->bindToTextureRgb) &&

-	    (a->bindToTextureRgba == b->bindToTextureRgba) &&

-	    (a->bindToMipmapTexture == b->bindToMipmapTexture) &&

-	    (a->bindToTextureTargets == b->bindToTextureTargets) &&

-	    (a->yInverted == b->yInverted) );

-}

+/*
+ * (C) Copyright IBM Corporation 2003
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file glcontextmodes.c
+ * Utility routines for working with \c __GLcontextModes structures.  At
+ * some point most or all of these functions will be moved to the Mesa
+ * code base.
+ *
+ * \author Ian Romanick <idr@us.ibm.com>
+ */
+
+#if defined(IN_MINI_GLX)
+#include <GL/gl.h>
+#else
+#if defined(HAVE_DIX_CONFIG_H)
+#include <dix-config.h>
+#endif
+#include <X11/X.h>
+#include <GL/glx.h>
+#include "GL/glxint.h"
+#endif
+
+/* Memory macros */
+#if defined(IN_MINI_GLX)
+#include <stdlib.h>
+#include <string.h>
+#define _mesa_malloc(b) malloc(b)
+#define _mesa_free(m) free(m)
+#define _mesa_memset  memset
+#else
+#ifdef XFree86Server
+#include <os.h>
+#include <string.h>
+#define _mesa_malloc(b) malloc(b)
+#define _mesa_free(m)   free(m)
+#define _mesa_memset   memset
+#else
+#include <X11/Xlibint.h>
+#define _mesa_memset memset
+#define _mesa_malloc(b) Xmalloc(b)
+#define _mesa_free(m) free(m)
+#endif                          /* XFree86Server */
+#endif                          /* !defined(IN_MINI_GLX) */
+
+#include "glcontextmodes.h"
+
+#if !defined(IN_MINI_GLX)
+#define NUM_VISUAL_TYPES   6
+
+/**
+ * Convert an X visual type to a GLX visual type.
+ * 
+ * \param visualType X visual type (i.e., \c TrueColor, \c StaticGray, etc.)
+ *        to be converted.
+ * \return If \c visualType is a valid X visual type, a GLX visual type will
+ *         be returned.  Otherwise \c GLX_NONE will be returned.
+ */
+GLint
+_gl_convert_from_x_visual_type(int visualType)
+{
+    static const int glx_visual_types[NUM_VISUAL_TYPES] = {
+        GLX_STATIC_GRAY, GLX_GRAY_SCALE,
+        GLX_STATIC_COLOR, GLX_PSEUDO_COLOR,
+        GLX_TRUE_COLOR, GLX_DIRECT_COLOR
+    };
+
+    return ((unsigned) visualType < NUM_VISUAL_TYPES)
+        ? glx_visual_types[visualType] : GLX_NONE;
+}
+
+/**
+ * Convert a GLX visual type to an X visual type.
+ * 
+ * \param visualType GLX visual type (i.e., \c GLX_TRUE_COLOR, 
+ *                   \c GLX_STATIC_GRAY, etc.) to be converted.
+ * \return If \c visualType is a valid GLX visual type, an X visual type will
+ *         be returned.  Otherwise -1 will be returned.
+ */
+GLint
+_gl_convert_to_x_visual_type(int visualType)
+{
+    static const int x_visual_types[NUM_VISUAL_TYPES] = {
+        TrueColor, DirectColor,
+        PseudoColor, StaticColor,
+        GrayScale, StaticGray
+    };
+
+    return ((unsigned) (visualType - GLX_TRUE_COLOR) < NUM_VISUAL_TYPES)
+        ? x_visual_types[visualType - GLX_TRUE_COLOR] : -1;
+}
+
+/**
+ * Copy a GLX visual config structure to a GL context mode structure.  All
+ * of the fields in \c config are copied to \c mode.  Additional fields in
+ * \c mode that can be derrived from the fields of \c config (i.e.,
+ * \c haveDepthBuffer) are also filled in.  The remaining fields in \c mode
+ * that cannot be derived are set to default values.
+ * 
+ * \param mode   Destination GL context mode.
+ * \param config Source GLX visual config.
+ * 
+ * \note
+ * The \c fbconfigID and \c visualID fields of the \c __GLcontextModes
+ * structure will be set to the \c vid of the \c __GLXvisualConfig structure.
+ */
+void
+_gl_copy_visual_to_context_mode(__GLcontextModes * mode,
+                                const __GLXvisualConfig * config)
+{
+    __GLcontextModes *const next = mode->next;
+
+    (void) _mesa_memset(mode, 0, sizeof(__GLcontextModes));
+    mode->next = next;
+
+    mode->visualID = config->vid;
+    mode->visualType = _gl_convert_from_x_visual_type(config->class);
+    mode->xRenderable = GL_TRUE;
+    mode->fbconfigID = config->vid;
+    mode->drawableType = GLX_WINDOW_BIT | GLX_PIXMAP_BIT;
+
+    mode->rgbMode = (config->rgba != 0);
+    mode->renderType = (mode->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT;
+
+    mode->colorIndexMode = !(mode->rgbMode);
+    mode->doubleBufferMode = (config->doubleBuffer != 0);
+    mode->stereoMode = (config->stereo != 0);
+
+    mode->haveAccumBuffer = ((config->accumRedSize +
+                              config->accumGreenSize +
+                              config->accumBlueSize +
+                              config->accumAlphaSize) > 0);
+    mode->haveDepthBuffer = (config->depthSize > 0);
+    mode->haveStencilBuffer = (config->stencilSize > 0);
+
+    mode->redBits = config->redSize;
+    mode->greenBits = config->greenSize;
+    mode->blueBits = config->blueSize;
+    mode->alphaBits = config->alphaSize;
+    mode->redMask = config->redMask;
+    mode->greenMask = config->greenMask;
+    mode->blueMask = config->blueMask;
+    mode->alphaMask = config->alphaMask;
+    mode->rgbBits = mode->rgbMode ? config->bufferSize : 0;
+    mode->indexBits = mode->colorIndexMode ? config->bufferSize : 0;
+
+    mode->accumRedBits = config->accumRedSize;
+    mode->accumGreenBits = config->accumGreenSize;
+    mode->accumBlueBits = config->accumBlueSize;
+    mode->accumAlphaBits = config->accumAlphaSize;
+    mode->depthBits = config->depthSize;
+    mode->stencilBits = config->stencilSize;
+
+    mode->numAuxBuffers = config->auxBuffers;
+    mode->level = config->level;
+
+    mode->visualRating = config->visualRating;
+    mode->transparentPixel = config->transparentPixel;
+    mode->transparentRed = config->transparentRed;
+    mode->transparentGreen = config->transparentGreen;
+    mode->transparentBlue = config->transparentBlue;
+    mode->transparentAlpha = config->transparentAlpha;
+    mode->transparentIndex = config->transparentIndex;
+    mode->samples = config->multiSampleSize;
+    mode->sampleBuffers = config->nMultiSampleBuffers;
+    /* mode->visualSelectGroup = config->visualSelectGroup; ? */
+
+    mode->swapMethod = GLX_SWAP_UNDEFINED_OML;
+
+    mode->bindToTextureRgb = (mode->rgbMode) ? GL_TRUE : GL_FALSE;
+    mode->bindToTextureRgba = (mode->rgbMode && mode->alphaBits) ?
+        GL_TRUE : GL_FALSE;
+    mode->bindToMipmapTexture = mode->rgbMode ? GL_TRUE : GL_FALSE;
+    mode->bindToTextureTargets = mode->rgbMode ?
+        GLX_TEXTURE_1D_BIT_EXT | GLX_TEXTURE_2D_BIT_EXT |
+        GLX_TEXTURE_RECTANGLE_BIT_EXT : 0;
+    mode->yInverted = GL_FALSE;
+}
+
+/**
+ * Get data from a GL context mode.
+ * 
+ * \param mode         GL context mode whose data is to be returned.
+ * \param attribute    Attribute of \c mode that is to be returned.
+ * \param value_return Location to store the data member of \c mode.
+ * \return  If \c attribute is a valid attribute of \c mode, zero is
+ *          returned.  Otherwise \c GLX_BAD_ATTRIBUTE is returned.
+ */
+int
+_gl_get_context_mode_data(const __GLcontextModes * mode, int attribute,
+                          int *value_return)
+{
+    switch (attribute) {
+    case GLX_USE_GL:
+        *value_return = GL_TRUE;
+        return 0;
+    case GLX_BUFFER_SIZE:
+        *value_return = mode->rgbBits;
+        return 0;
+    case GLX_RGBA:
+        *value_return = mode->rgbMode;
+        return 0;
+    case GLX_RED_SIZE:
+        *value_return = mode->redBits;
+        return 0;
+    case GLX_GREEN_SIZE:
+        *value_return = mode->greenBits;
+        return 0;
+    case GLX_BLUE_SIZE:
+        *value_return = mode->blueBits;
+        return 0;
+    case GLX_ALPHA_SIZE:
+        *value_return = mode->alphaBits;
+        return 0;
+    case GLX_DOUBLEBUFFER:
+        *value_return = mode->doubleBufferMode;
+        return 0;
+    case GLX_STEREO:
+        *value_return = mode->stereoMode;
+        return 0;
+    case GLX_AUX_BUFFERS:
+        *value_return = mode->numAuxBuffers;
+        return 0;
+    case GLX_DEPTH_SIZE:
+        *value_return = mode->depthBits;
+        return 0;
+    case GLX_STENCIL_SIZE:
+        *value_return = mode->stencilBits;
+        return 0;
+    case GLX_ACCUM_RED_SIZE:
+        *value_return = mode->accumRedBits;
+        return 0;
+    case GLX_ACCUM_GREEN_SIZE:
+        *value_return = mode->accumGreenBits;
+        return 0;
+    case GLX_ACCUM_BLUE_SIZE:
+        *value_return = mode->accumBlueBits;
+        return 0;
+    case GLX_ACCUM_ALPHA_SIZE:
+        *value_return = mode->accumAlphaBits;
+        return 0;
+    case GLX_LEVEL:
+        *value_return = mode->level;
+        return 0;
+    case GLX_TRANSPARENT_TYPE_EXT:
+        *value_return = mode->transparentPixel;
+        return 0;
+    case GLX_TRANSPARENT_RED_VALUE:
+        *value_return = mode->transparentRed;
+        return 0;
+    case GLX_TRANSPARENT_GREEN_VALUE:
+        *value_return = mode->transparentGreen;
+        return 0;
+    case GLX_TRANSPARENT_BLUE_VALUE:
+        *value_return = mode->transparentBlue;
+        return 0;
+    case GLX_TRANSPARENT_ALPHA_VALUE:
+        *value_return = mode->transparentAlpha;
+        return 0;
+    case GLX_TRANSPARENT_INDEX_VALUE:
+        *value_return = mode->transparentIndex;
+        return 0;
+    case GLX_X_VISUAL_TYPE:
+        *value_return = mode->visualType;
+        return 0;
+    case GLX_CONFIG_CAVEAT:
+        *value_return = mode->visualRating;
+        return 0;
+    case GLX_VISUAL_ID:
+        *value_return = mode->visualID;
+        return 0;
+    case GLX_DRAWABLE_TYPE:
+        *value_return = mode->drawableType;
+        return 0;
+    case GLX_RENDER_TYPE:
+        *value_return = mode->renderType;
+        return 0;
+    case GLX_X_RENDERABLE:
+        *value_return = mode->xRenderable;
+        return 0;
+    case GLX_FBCONFIG_ID:
+        *value_return = mode->fbconfigID;
+        return 0;
+    case GLX_MAX_PBUFFER_WIDTH:
+        *value_return = mode->maxPbufferWidth;
+        return 0;
+    case GLX_MAX_PBUFFER_HEIGHT:
+        *value_return = mode->maxPbufferHeight;
+        return 0;
+    case GLX_MAX_PBUFFER_PIXELS:
+        *value_return = mode->maxPbufferPixels;
+        return 0;
+    case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX:
+        *value_return = mode->optimalPbufferWidth;
+        return 0;
+    case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX:
+        *value_return = mode->optimalPbufferHeight;
+        return 0;
+    case GLX_SWAP_METHOD_OML:
+        *value_return = mode->swapMethod;
+        return 0;
+    case GLX_SAMPLE_BUFFERS_SGIS:
+        *value_return = mode->sampleBuffers;
+        return 0;
+    case GLX_SAMPLES_SGIS:
+        *value_return = mode->samples;
+        return 0;
+    case GLX_BIND_TO_TEXTURE_RGB_EXT:
+        *value_return = mode->bindToTextureRgb;
+        return 0;
+    case GLX_BIND_TO_TEXTURE_RGBA_EXT:
+        *value_return = mode->bindToTextureRgba;
+        return 0;
+    case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
+        *value_return = mode->bindToMipmapTexture == GL_TRUE ? GL_TRUE :
+            GL_FALSE;
+        return 0;
+    case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
+        *value_return = mode->bindToTextureTargets;
+        return 0;
+    case GLX_Y_INVERTED_EXT:
+        *value_return = mode->yInverted;
+        return 0;
+
+        /* Applications are NOT allowed to query GLX_VISUAL_SELECT_GROUP_SGIX.
+         * It is ONLY for communication between the GLX client and the GLX
+         * server.
+         */
+    case GLX_VISUAL_SELECT_GROUP_SGIX:
+    default:
+        return GLX_BAD_ATTRIBUTE;
+    }
+}
+#endif                          /* !defined(IN_MINI_GLX) */
+
+/**
+ * Allocate a linked list of \c __GLcontextModes structures.  The fields of
+ * each structure will be initialized to "reasonable" default values.  In
+ * most cases this is the default value defined by table 3.4 of the GLX
+ * 1.3 specification.  This means that most values are either initialized to
+ * zero or \c GLX_DONT_CARE (which is -1).  As support for additional
+ * extensions is added, the new values will be initialized to appropriate
+ * values from the extension specification.
+ * 
+ * \param count         Number of structures to allocate.
+ * \param minimum_size  Minimum size of a structure to allocate.  This allows
+ *                      for differences in the version of the
+ *                      \c __GLcontextModes stucture used in libGL and in a
+ *                      DRI-based driver.
+ * \returns A pointer to the first element in a linked list of \c count
+ *          stuctures on success, or \c NULL on failure.
+ * 
+ * \warning Use of \c minimum_size does \b not guarantee binary compatibility.
+ *          The fundamental assumption is that if the \c minimum_size
+ *          specified by the driver and the size of the \c __GLcontextModes
+ *          structure in libGL is the same, then the meaning of each byte in
+ *          the structure is the same in both places.  \b Be \b careful!
+ *          Basically this means that fields have to be added in libGL and
+ *          then propagated to drivers.  Drivers should \b never arbitrarilly
+ *          extend the \c __GLcontextModes data-structure.
+ */
+__GLcontextModes *
+_gl_context_modes_create(unsigned count, size_t minimum_size)
+{
+    const size_t size = (minimum_size > sizeof(__GLcontextModes))
+        ? minimum_size : sizeof(__GLcontextModes);
+    __GLcontextModes *base = NULL;
+    __GLcontextModes **next;
+    unsigned i;
+
+    next = &base;
+    for (i = 0; i < count; i++) {
+        *next = (__GLcontextModes *) _mesa_malloc(size);
+        if (*next == NULL) {
+            _gl_context_modes_destroy(base);
+            base = NULL;
+            break;
+        }
+
+        (void) _mesa_memset(*next, 0, size);
+        (*next)->visualID = GLX_DONT_CARE;
+        (*next)->visualType = GLX_DONT_CARE;
+        (*next)->visualRating = GLX_NONE;
+        (*next)->transparentPixel = GLX_NONE;
+        (*next)->transparentRed = GLX_DONT_CARE;
+        (*next)->transparentGreen = GLX_DONT_CARE;
+        (*next)->transparentBlue = GLX_DONT_CARE;
+        (*next)->transparentAlpha = GLX_DONT_CARE;
+        (*next)->transparentIndex = GLX_DONT_CARE;
+        (*next)->xRenderable = GLX_DONT_CARE;
+        (*next)->fbconfigID = GLX_DONT_CARE;
+        (*next)->swapMethod = GLX_SWAP_UNDEFINED_OML;
+        (*next)->bindToTextureRgb = GLX_DONT_CARE;
+        (*next)->bindToTextureRgba = GLX_DONT_CARE;
+        (*next)->bindToMipmapTexture = GLX_DONT_CARE;
+        (*next)->bindToTextureTargets = GLX_DONT_CARE;
+        (*next)->yInverted = GLX_DONT_CARE;
+
+        next = &((*next)->next);
+    }
+
+    return base;
+}
+
+/**
+ * Destroy a linked list of \c __GLcontextModes structures created by
+ * \c _gl_context_modes_create.
+ * 
+ * \param modes  Linked list of structures to be destroyed.  All structres
+ *               in the list will be freed.
+ */
+void
+_gl_context_modes_destroy(__GLcontextModes * modes)
+{
+    while (modes != NULL) {
+        __GLcontextModes *const next = modes->next;
+
+        _mesa_free(modes);
+        modes = next;
+    }
+}
+
+/**
+ * Find a context mode matching a Visual ID.
+ *
+ * \param modes  List list of context-mode structures to be searched.
+ * \param vid    Visual ID to be found.
+ * \returns A pointer to a context-mode in \c modes if \c vid was found in
+ *          the list, or \c NULL if it was not.
+ */
+
+__GLcontextModes *
+_gl_context_modes_find_visual(__GLcontextModes * modes, int vid)
+{
+    __GLcontextModes *m;
+
+    for (m = modes; m != NULL; m = m->next)
+        if (m->visualID == vid)
+            return m;
+
+    return NULL;
+}
+
+__GLcontextModes *
+_gl_context_modes_find_fbconfig(__GLcontextModes * modes, int fbid)
+{
+    __GLcontextModes *m;
+
+    for (m = modes; m != NULL; m = m->next)
+        if (m->fbconfigID == fbid)
+            return m;
+
+    return NULL;
+}
+
+/**
+ * Determine if two context-modes are the same.  This is intended to be used
+ * by libGL implementations to compare to sets of driver generated FBconfigs.
+ * 
+ * \param a  Context-mode to be compared.
+ * \param b  Context-mode to be compared.
+ * \returns \c GL_TRUE if the two context-modes are the same.  \c GL_FALSE is
+ *          returned otherwise.
+ */
+GLboolean
+_gl_context_modes_are_same(const __GLcontextModes * a,
+                           const __GLcontextModes * b)
+{
+    return ((a->rgbMode == b->rgbMode) &&
+            (a->floatMode == b->floatMode) &&
+            (a->colorIndexMode == b->colorIndexMode) &&
+            (a->doubleBufferMode == b->doubleBufferMode) &&
+            (a->stereoMode == b->stereoMode) &&
+            (a->redBits == b->redBits) &&
+            (a->greenBits == b->greenBits) &&
+            (a->blueBits == b->blueBits) && (a->alphaBits == b->alphaBits) &&
+#if 0                           /* For some reason these don't get set on the client-side in libGL. */
+            (a->redMask == b->redMask) &&
+            (a->greenMask == b->greenMask) &&
+            (a->blueMask == b->blueMask) && (a->alphaMask == b->alphaMask) &&
+#endif
+            (a->rgbBits == b->rgbBits) &&
+            (a->indexBits == b->indexBits) &&
+            (a->accumRedBits == b->accumRedBits) &&
+            (a->accumGreenBits == b->accumGreenBits) &&
+            (a->accumBlueBits == b->accumBlueBits) &&
+            (a->accumAlphaBits == b->accumAlphaBits) &&
+            (a->depthBits == b->depthBits) &&
+            (a->stencilBits == b->stencilBits) &&
+            (a->numAuxBuffers == b->numAuxBuffers) &&
+            (a->level == b->level) &&
+            (a->pixmapMode == b->pixmapMode) &&
+            (a->visualRating == b->visualRating) &&
+            (a->transparentPixel == b->transparentPixel) &&
+            ((a->transparentPixel != GLX_TRANSPARENT_RGB) ||
+             ((a->transparentRed == b->transparentRed) &&
+              (a->transparentGreen == b->transparentGreen) &&
+              (a->transparentBlue == b->transparentBlue) &&
+              (a->transparentAlpha == b->transparentAlpha))) &&
+            ((a->transparentPixel != GLX_TRANSPARENT_INDEX) ||
+             (a->transparentIndex == b->transparentIndex)) &&
+            (a->sampleBuffers == b->sampleBuffers) &&
+            (a->samples == b->samples) &&
+            ((a->drawableType & b->drawableType) != 0) &&
+            (a->renderType == b->renderType) &&
+            (a->maxPbufferWidth == b->maxPbufferWidth) &&
+            (a->maxPbufferHeight == b->maxPbufferHeight) &&
+            (a->maxPbufferPixels == b->maxPbufferPixels) &&
+            (a->optimalPbufferWidth == b->optimalPbufferWidth) &&
+            (a->optimalPbufferHeight == b->optimalPbufferHeight) &&
+            (a->swapMethod == b->swapMethod) &&
+            (a->bindToTextureRgb == b->bindToTextureRgb) &&
+            (a->bindToTextureRgba == b->bindToTextureRgba) &&
+            (a->bindToMipmapTexture == b->bindToMipmapTexture) &&
+            (a->bindToTextureTargets == b->bindToTextureTargets) &&
+            (a->yInverted == b->yInverted));
+}