glx: Rename glcontextmodes.[ch] to glxconfig.[ch]

1 files changed, 304 insertions, 0 deletions

diff --git a/src/glx/glxconfig.c b/src/glx/glxconfig.c
new file mode 100644
index 00000000000..1d9678f48cd
--- /dev/null
+++ b/src/glx/glxconfig.c
@@ -0,0 +1,304 @@
+/*
+ * (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 glxconfig.c
+ * Utility routines for working with \c struct glx_config 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>
+ */
+
+#include <GL/glx.h>
+#include "GL/glxint.h"
+#include <stdlib.h>
+#include <string.h>
+
+#include "glxconfig.h"
+
+#define NUM_VISUAL_TYPES   6
+
+/**
+ * Get data from a GLX config
+ * 
+ * \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.
+ */
+_X_HIDDEN int
+glx_config_get(struct glx_config * 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;
+#ifndef GLX_USE_APPLEGL               /* This isn't supported by CGL. */
+   case GLX_TRANSPARENT_TYPE_EXT:
+      *value_return = mode->transparentPixel;
+      return 0;
+#endif
+   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;
+#ifndef GLX_USE_APPLEGL               /* These aren't supported by CGL. */
+   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;
+#endif
+   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;
+   }
+}
+
+
+/**
+ * Allocate a linked list of \c struct glx_config 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 struct glx_config 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.
+ */
+_X_HIDDEN struct glx_config *
+glx_config_create_list(unsigned count)
+{
+   const size_t size = sizeof(struct glx_config);
+   struct glx_config *base = NULL;
+   struct glx_config **next;
+   unsigned i;
+
+   next = &base;
+   for (i = 0; i < count; i++) {
+      *next = (struct glx_config *) malloc(size);
+      if (*next == NULL) {
+	 glx_config_destroy_list(base);
+	 base = NULL;
+	 break;
+      }
+
+      (void) 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;
+}
+
+_X_HIDDEN void
+glx_config_destroy_list(struct glx_config *configs)
+{
+   while (configs != NULL) {
+      struct glx_config *const next = configs->next;
+
+      free(configs);
+      configs = 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.
+ */
+
+_X_HIDDEN struct glx_config *
+glx_config_find_visual(struct glx_config *configs, int vid)
+{
+   struct glx_config *c;
+
+   for (c = configs; c != NULL; c = c->next)
+      if (c->visualID == vid)
+	 return c;
+
+   return NULL;
+}
+
+_X_HIDDEN struct glx_config *
+glx_config_find_fbconfig(struct glx_config *configs, int fbid)
+{
+   struct glx_config *c;
+
+   for (c = configs; c != NULL; c = c->next)
+      if (c->fbconfigID == fbid)
+	 return c;
+
+   return NULL;
+}