Bump to latest mesa in Debian

1 files changed, 638 insertions, 0 deletions

diff --git a/src/egl/main/eglconfig.c b/src/egl/main/eglconfig.c
new file mode 100644
index 00000000000..c180e30d7fa
--- /dev/null
+++ b/src/egl/main/eglconfig.c
@@ -0,0 +1,638 @@
+/**
+ * EGL Configuration (pixel format) functions.
+ */
+
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include "eglconfig.h"
+#include "egldisplay.h"
+#include "egldriver.h"
+#include "eglglobals.h"
+#include "egllog.h"
+
+
+#define MIN2(A, B)  (((A) < (B)) ? (A) : (B))
+
+
+/**
+ * Convert an _EGLConfig to a __GLcontextModes object.
+ * NOTE: This routine may be incomplete - we're only making sure that
+ * the fields needed by Mesa (for _mesa_create_context/framebuffer) are
+ * set correctly.
+ */
+void
+_eglConfigToContextModesRec(const _EGLConfig *config, __GLcontextModes *mode)
+{
+   memset(mode, 0, sizeof(*mode));
+
+   mode->rgbMode = GL_TRUE; /* no color index */
+   mode->colorIndexMode = GL_FALSE;
+   mode->doubleBufferMode = GL_TRUE;  /* always DB for now */
+   mode->stereoMode = GL_FALSE;
+
+   mode->redBits = GET_CONFIG_ATTRIB(config, EGL_RED_SIZE);
+   mode->greenBits = GET_CONFIG_ATTRIB(config, EGL_GREEN_SIZE);
+   mode->blueBits = GET_CONFIG_ATTRIB(config, EGL_BLUE_SIZE);
+   mode->alphaBits = GET_CONFIG_ATTRIB(config, EGL_ALPHA_SIZE);
+   mode->rgbBits = GET_CONFIG_ATTRIB(config, EGL_BUFFER_SIZE);
+
+   /* no rgba masks - fix? */
+
+   mode->depthBits = GET_CONFIG_ATTRIB(config, EGL_DEPTH_SIZE);
+   mode->haveDepthBuffer = mode->depthBits > 0;
+
+   mode->stencilBits = GET_CONFIG_ATTRIB(config, EGL_STENCIL_SIZE);
+   mode->haveStencilBuffer = mode->stencilBits > 0;
+
+   /* no accum */
+
+   mode->level = GET_CONFIG_ATTRIB(config, EGL_LEVEL);
+   mode->samples = GET_CONFIG_ATTRIB(config, EGL_SAMPLES);
+   mode->sampleBuffers = GET_CONFIG_ATTRIB(config, EGL_SAMPLE_BUFFERS);
+
+   /* surface type - not really needed */
+   mode->visualType = GLX_TRUE_COLOR;
+   mode->renderType = GLX_RGBA_BIT;
+}
+
+
+void
+_eglSetConfigAttrib(_EGLConfig *config, EGLint attr, EGLint val)
+{
+   assert(attr >= FIRST_ATTRIB);
+   assert(attr < FIRST_ATTRIB + MAX_ATTRIBS);
+   config->Attrib[attr - FIRST_ATTRIB] = val;
+}
+
+
+/**
+ * Init the given _EGLconfig to default values.
+ * \param id  the configuration's ID.
+ */
+void
+_eglInitConfig(_EGLConfig *config, EGLint id)
+{
+   memset(config, 0, sizeof(*config));
+   config->Handle = id;
+   _eglSetConfigAttrib(config, EGL_CONFIG_ID,               id);
+   _eglSetConfigAttrib(config, EGL_BIND_TO_TEXTURE_RGB,     EGL_DONT_CARE);
+   _eglSetConfigAttrib(config, EGL_BIND_TO_TEXTURE_RGBA,    EGL_DONT_CARE);
+   _eglSetConfigAttrib(config, EGL_CONFIG_CAVEAT,           EGL_DONT_CARE);
+   _eglSetConfigAttrib(config, EGL_NATIVE_RENDERABLE,       EGL_DONT_CARE);
+   _eglSetConfigAttrib(config, EGL_NATIVE_VISUAL_TYPE,      EGL_DONT_CARE);
+   _eglSetConfigAttrib(config, EGL_MIN_SWAP_INTERVAL,       EGL_DONT_CARE);
+   _eglSetConfigAttrib(config, EGL_MAX_SWAP_INTERVAL,       EGL_DONT_CARE);
+   _eglSetConfigAttrib(config, EGL_SURFACE_TYPE,            
+                   EGL_SCREEN_BIT_MESA | EGL_PBUFFER_BIT |
+                   EGL_PIXMAP_BIT | EGL_WINDOW_BIT);
+   _eglSetConfigAttrib(config, EGL_TRANSPARENT_TYPE,        EGL_NONE);
+   _eglSetConfigAttrib(config, EGL_TRANSPARENT_RED_VALUE,   EGL_DONT_CARE);
+   _eglSetConfigAttrib(config, EGL_TRANSPARENT_GREEN_VALUE, EGL_DONT_CARE);
+   _eglSetConfigAttrib(config, EGL_TRANSPARENT_BLUE_VALUE,  EGL_DONT_CARE);
+#ifdef EGL_VERSION_1_2
+   _eglSetConfigAttrib(config, EGL_COLOR_BUFFER_TYPE,       EGL_RGB_BUFFER);
+   _eglSetConfigAttrib(config, EGL_RENDERABLE_TYPE,         EGL_OPENGL_ES_BIT);
+#endif /* EGL_VERSION_1_2 */
+}
+
+
+/**
+ * Given an EGLConfig handle, return the corresponding _EGLConfig object.
+ */
+_EGLConfig *
+_eglLookupConfig(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config)
+{
+   EGLint i;
+   _EGLDisplay *disp = _eglLookupDisplay(dpy);
+   for (i = 0; i < disp->NumConfigs; i++) {
+      if (disp->Configs[i].Handle == config) {
+          return disp->Configs + i;
+      }
+   }
+   return NULL;
+}
+
+
+/**
+ * Add the given _EGLConfig to the given display.
+ */
+_EGLConfig *
+_eglAddConfig(_EGLDisplay *display, const _EGLConfig *config)
+{
+   _EGLConfig *newConfigs;
+   EGLint n;
+
+   n = display->NumConfigs;
+
+   newConfigs = (_EGLConfig *) realloc(display->Configs,
+                                       (n + 1) * sizeof(_EGLConfig));
+   if (newConfigs) {
+      display->Configs = newConfigs;
+      display->Configs[n] = *config; /* copy struct */
+      display->Configs[n].Handle = n;
+      display->NumConfigs++;
+      return display->Configs + n;
+   }
+   else {
+      return NULL;
+   }
+}
+
+
+/**
+ * Parse the attrib_list to fill in the fields of the given _eglConfig
+ * Return EGL_FALSE if any errors, EGL_TRUE otherwise.
+ */
+EGLBoolean
+_eglParseConfigAttribs(_EGLConfig *config, const EGLint *attrib_list)
+{
+   EGLint i;
+
+   /* set all config attribs to EGL_DONT_CARE */
+   for (i = 0; i < MAX_ATTRIBS; i++) {
+      config->Attrib[i] = EGL_DONT_CARE;
+   }
+
+   for (i = 0; attrib_list && attrib_list[i] != EGL_NONE; i++) {
+      const EGLint attr = attrib_list[i];
+      if (attr >= EGL_BUFFER_SIZE &&
+          attr <= EGL_MAX_SWAP_INTERVAL) {
+         EGLint k = attr - FIRST_ATTRIB;
+         assert(k >= 0);
+         assert(k < MAX_ATTRIBS);
+         config->Attrib[k] = attrib_list[++i];
+      }
+#ifdef EGL_VERSION_1_2
+      else if (attr == EGL_COLOR_BUFFER_TYPE) {
+         EGLint bufType = attrib_list[++i];
+         if (bufType != EGL_RGB_BUFFER && bufType != EGL_LUMINANCE_BUFFER) {
+            _eglError(EGL_BAD_ATTRIBUTE, "eglChooseConfig");
+            return EGL_FALSE;
+         }
+         _eglSetConfigAttrib(config, EGL_COLOR_BUFFER_TYPE, bufType);
+      }
+      else if (attr == EGL_RENDERABLE_TYPE) {
+         EGLint renType = attrib_list[++i];
+         if (renType & ~(EGL_OPENGL_ES_BIT | EGL_OPENVG_BIT)) {
+            _eglError(EGL_BAD_ATTRIBUTE, "eglChooseConfig");
+            return EGL_FALSE;
+         }
+         _eglSetConfigAttrib(config, EGL_RENDERABLE_TYPE, renType);
+      }
+      else if (attr == EGL_ALPHA_MASK_SIZE ||
+               attr == EGL_LUMINANCE_SIZE) {
+         EGLint value = attrib_list[++i];
+         _eglSetConfigAttrib(config, attr, value);
+      }
+#endif /* EGL_VERSION_1_2 */
+      else {
+         _eglError(EGL_BAD_ATTRIBUTE, "eglChooseConfig");
+         return EGL_FALSE;
+      }
+   }
+   return EGL_TRUE;
+}
+
+
+#define EXACT 1
+#define ATLEAST 2
+#define MASK 3
+#define SMALLER 4
+#define SPECIAL 5
+#define NONE 6
+
+struct sort_info {
+   EGLint Attribute;
+   EGLint MatchCriteria;
+   EGLint SortOrder;
+};
+
+/* This encodes the info from Table 3.5 of the EGL spec, ordered by
+ * Sort Priority.
+ *
+ * XXX To do: EGL 1.2 attribs
+ */
+static struct sort_info SortInfo[] = {
+   { EGL_CONFIG_CAVEAT,           EXACT,   SPECIAL },
+   { EGL_RED_SIZE,                ATLEAST, SPECIAL },
+   { EGL_GREEN_SIZE,              ATLEAST, SPECIAL },
+   { EGL_BLUE_SIZE,               ATLEAST, SPECIAL },
+   { EGL_ALPHA_SIZE,              ATLEAST, SPECIAL },
+   { EGL_BUFFER_SIZE,             ATLEAST, SMALLER },
+   { EGL_SAMPLE_BUFFERS,          ATLEAST, SMALLER },
+   { EGL_SAMPLES,                 ATLEAST, SMALLER },
+   { EGL_DEPTH_SIZE,              ATLEAST, SMALLER },
+   { EGL_STENCIL_SIZE,            ATLEAST, SMALLER },
+   { EGL_NATIVE_VISUAL_TYPE,      EXACT,   SPECIAL },
+   { EGL_CONFIG_ID,               EXACT,   SMALLER },
+   { EGL_BIND_TO_TEXTURE_RGB,     EXACT,   NONE    },
+   { EGL_BIND_TO_TEXTURE_RGBA,    EXACT,   NONE    },
+   { EGL_LEVEL,                   EXACT,   NONE    },
+   { EGL_NATIVE_RENDERABLE,       EXACT,   NONE    },
+   { EGL_MAX_SWAP_INTERVAL,       EXACT,   NONE    },
+   { EGL_MIN_SWAP_INTERVAL,       EXACT,   NONE    },
+   { EGL_SURFACE_TYPE,            MASK,    NONE    },
+   { EGL_TRANSPARENT_TYPE,        EXACT,   NONE    },
+   { EGL_TRANSPARENT_RED_VALUE,   EXACT,   NONE    },
+   { EGL_TRANSPARENT_GREEN_VALUE, EXACT,   NONE    },
+   { EGL_TRANSPARENT_BLUE_VALUE,  EXACT,   NONE    },
+   { 0, 0, 0 }
+};
+
+
+/**
+ * Return EGL_TRUE if the attributes of c meet or exceed the minimums
+ * specified by min.
+ */
+static EGLBoolean
+_eglConfigQualifies(const _EGLConfig *c, const _EGLConfig *min)
+{
+   EGLint i;
+   for (i = 0; SortInfo[i].Attribute != 0; i++) {
+      const EGLint mv = GET_CONFIG_ATTRIB(min, SortInfo[i].Attribute);
+      if (mv != EGL_DONT_CARE) {
+         const EGLint cv = GET_CONFIG_ATTRIB(c, SortInfo[i].Attribute);
+         if (SortInfo[i].MatchCriteria == EXACT) {
+            if (cv != mv) {
+               return EGL_FALSE;
+            }
+         }
+         else if (SortInfo[i].MatchCriteria == ATLEAST) {
+            if (cv < mv) {
+               return EGL_FALSE;
+            }
+         }
+         else {
+            assert(SortInfo[i].MatchCriteria == MASK);
+            if ((mv & cv) != mv) {
+               return EGL_FALSE;
+            }
+         }
+      }
+   }
+   return EGL_TRUE;
+}
+
+
+/**
+ * Compare configs 'a' and 'b' and return -1 if a belongs before b,
+ * 1 if a belongs after b, or 0 if they're equal.
+ * Used by qsort().
+ */
+static int
+_eglCompareConfigs(const void *a, const void *b)
+{
+   const _EGLConfig *aConfig = (const _EGLConfig *) a;
+   const _EGLConfig *bConfig = (const _EGLConfig *) b;
+   EGLint i;
+
+   for (i = 0; SortInfo[i].Attribute != 0; i++) {
+      const EGLint aVal = GET_CONFIG_ATTRIB(aConfig, SortInfo[i].Attribute);
+      const EGLint bVal = GET_CONFIG_ATTRIB(bConfig, SortInfo[i].Attribute);
+      if (SortInfo[i].SortOrder == SMALLER) {
+         if (aVal < bVal)
+            return -1;
+         else if (aVal > bVal)
+            return 1;
+         /* else, continue examining attribute values */
+      }
+      else if (SortInfo[i].SortOrder == SPECIAL) {
+         if (SortInfo[i].Attribute == EGL_CONFIG_CAVEAT) {
+            /* values are EGL_NONE, SLOW_CONFIG, or NON_CONFORMANT_CONFIG */
+            if (aVal < bVal)
+               return -1;
+            else if (aVal > bVal)
+               return 1;
+         }
+         else if (SortInfo[i].Attribute == EGL_RED_SIZE ||
+                  SortInfo[i].Attribute == EGL_GREEN_SIZE ||
+                  SortInfo[i].Attribute == EGL_BLUE_SIZE ||
+                  SortInfo[i].Attribute == EGL_ALPHA_SIZE) {
+            if (aVal > bVal)
+               return -1;
+            else if (aVal < bVal)
+               return 1;
+         }
+         else {
+            assert(SortInfo[i].Attribute == EGL_NATIVE_VISUAL_TYPE);
+            if (aVal < bVal)
+               return -1;
+            else if (aVal > bVal)
+               return 1;
+         }
+      }
+      else {
+         assert(SortInfo[i].SortOrder == NONE);
+         /* continue examining attribute values */
+      }
+   }
+
+   /* all attributes identical */
+   return 0;
+}
+
+
+/**
+ * Typical fallback routine for eglChooseConfig
+ */
+EGLBoolean
+_eglChooseConfig(_EGLDriver *drv, EGLDisplay dpy, const EGLint *attrib_list,
+                 EGLConfig *configs, EGLint config_size, EGLint *num_configs)
+{
+   _EGLDisplay *disp = _eglLookupDisplay(dpy);
+   _EGLConfig **configList, criteria;
+   EGLint i, count;
+
+   /* parse the attrib_list to initialize criteria */
+   if (!_eglParseConfigAttribs(&criteria, attrib_list)) {
+      return EGL_FALSE;
+   }
+
+   /* allocate array of config pointers */
+   configList = (_EGLConfig **) malloc(config_size * sizeof(_EGLConfig *));
+   if (!configList) {
+      _eglError(EGL_BAD_CONFIG, "eglChooseConfig(out of memory)");
+      return EGL_FALSE;
+   }
+
+   /* make array of pointers to qualifying configs */
+   for (i = count = 0; i < disp->NumConfigs && count < config_size; i++) {
+      if (_eglConfigQualifies(disp->Configs + i, &criteria)) {
+         configList[count++] = disp->Configs + i;
+      }
+   }
+
+   /* sort array of pointers */
+   qsort(configList, count, sizeof(_EGLConfig *), _eglCompareConfigs);
+
+   /* copy config handles to output array */
+   for (i = 0; i < count; i++) {
+      configs[i] = configList[i]->Handle;
+   }
+
+   free(configList);
+
+   *num_configs = count;
+
+   return EGL_TRUE;
+}
+
+
+/**
+ * Fallback for eglGetConfigAttrib.
+ */
+EGLBoolean
+_eglGetConfigAttrib(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config,
+                    EGLint attribute, EGLint *value)
+{
+   const _EGLConfig *conf = _eglLookupConfig(drv, dpy, config);
+   const EGLint k = attribute - FIRST_ATTRIB;
+   if (k >= 0 && k < MAX_ATTRIBS) {
+      *value = conf->Attrib[k];
+      return EGL_TRUE;
+   }
+   else {
+      _eglError(EGL_BAD_ATTRIBUTE, "eglGetConfigAttrib");
+      return EGL_FALSE;
+   }
+}
+
+
+/**
+ * Fallback for eglGetConfigs.
+ */
+EGLBoolean
+_eglGetConfigs(_EGLDriver *drv, EGLDisplay dpy, EGLConfig *configs,
+               EGLint config_size, EGLint *num_config)
+{
+   _EGLDisplay *disp = _eglLookupDisplay(dpy);
+
+   if (!drv->Initialized) {
+      _eglError(EGL_NOT_INITIALIZED, "eglGetConfigs");
+      return EGL_FALSE;
+   }
+
+   if (configs) {
+      EGLint i;
+      *num_config = MIN2(disp->NumConfigs, config_size);
+      for (i = 0; i < *num_config; i++) {
+         configs[i] = disp->Configs[i].Handle;
+      }
+   }
+   else {
+      /* just return total number of supported configs */
+      *num_config = disp->NumConfigs;
+   }
+
+   return EGL_TRUE;
+}
+
+
+/**
+ * Creates a set of \c __GLcontextModes that a driver will expose.
+ * 
+ * A set of \c __GLcontextModes will be created based on the supplied
+ * parameters.  The number of modes processed will be 2 *
+ * \c num_depth_stencil_bits * \c num_db_modes.
+ * 
+ * For the most part, data is just copied from \c depth_bits, \c stencil_bits,
+ * \c db_modes, and \c visType into each \c __GLcontextModes element.
+ * However, the meanings of \c fb_format and \c fb_type require further
+ * explanation.  The \c fb_format specifies which color components are in
+ * each pixel and what the default order is.  For example, \c GL_RGB specifies
+ * that red, green, blue are available and red is in the "most significant"
+ * position and blue is in the "least significant".  The \c fb_type specifies
+ * the bit sizes of each component and the actual ordering.  For example, if
+ * \c GL_UNSIGNED_SHORT_5_6_5_REV is specified with \c GL_RGB, bits [15:11]
+ * are the blue value, bits [10:5] are the green value, and bits [4:0] are
+ * the red value.
+ * 
+ * One sublte issue is the combination of \c GL_RGB  or \c GL_BGR and either
+ * of the \c GL_UNSIGNED_INT_8_8_8_8 modes.  The resulting mask values in the
+ * \c __GLcontextModes structure is \b identical to the \c GL_RGBA or
+ * \c GL_BGRA case, except the \c alphaMask is zero.  This means that, as
+ * far as this routine is concerned, \c GL_RGB with \c GL_UNSIGNED_INT_8_8_8_8
+ * still uses 32-bits.
+ *
+ * If in doubt, look at the tables used in the function.
+ * 
+ * \param ptr_to_modes  Pointer to a pointer to a linked list of
+ *                      \c __GLcontextModes.  Upon completion, a pointer to
+ *                      the next element to be process will be stored here.
+ *                      If the function fails and returns \c GL_FALSE, this
+ *                      value will be unmodified, but some elements in the
+ *                      linked list may be modified.
+ * \param fb_format     Format of the framebuffer.  Currently only \c GL_RGB,
+ *                      \c GL_RGBA, \c GL_BGR, and \c GL_BGRA are supported.
+ * \param fb_type       Type of the pixels in the framebuffer.  Currently only
+ *                      \c GL_UNSIGNED_SHORT_5_6_5, 
+ *                      \c GL_UNSIGNED_SHORT_5_6_5_REV,
+ *                      \c GL_UNSIGNED_INT_8_8_8_8, and
+ *                      \c GL_UNSIGNED_INT_8_8_8_8_REV are supported.
+ * \param depth_bits    Array of depth buffer sizes to be exposed.
+ * \param stencil_bits  Array of stencil buffer sizes to be exposed.
+ * \param num_depth_stencil_bits  Number of entries in both \c depth_bits and
+ *                      \c stencil_bits.
+ * \param db_modes      Array of buffer swap modes.  If an element has a
+ *                      value of \c GLX_NONE, then it represents a
+ *                      single-buffered mode.  Other valid values are
+ *                      \c GLX_SWAP_EXCHANGE_OML, \c GLX_SWAP_COPY_OML, and
+ *                      \c GLX_SWAP_UNDEFINED_OML.  See the
+ *                      GLX_OML_swap_method extension spec for more details.
+ * \param num_db_modes  Number of entries in \c db_modes.
+ * \param visType       GLX visual type.  Usually either \c GLX_TRUE_COLOR or
+ *                      \c GLX_DIRECT_COLOR.
+ * 
+ * \returns
+ * \c GL_TRUE on success or \c GL_FALSE on failure.  Currently the only
+ * cause of failure is a bad parameter (i.e., unsupported \c fb_format or
+ * \c fb_type).
+ * 
+ * \todo
+ * There is currently no way to support packed RGB modes (i.e., modes with
+ * exactly 3 bytes per pixel) or floating-point modes.  This could probably
+ * be done by creating some new, private enums with clever names likes
+ * \c GL_UNSIGNED_3BYTE_8_8_8, \c GL_4FLOAT_32_32_32_32, 
+ * \c GL_4HALF_16_16_16_16, etc.  We can cross that bridge when we come to it.
+ */
+GLboolean
+_eglFillInConfigs(_EGLConfig * configs,
+                  GLenum fb_format, GLenum fb_type,
+                  const u_int8_t * depth_bits, const u_int8_t * stencil_bits,
+                  unsigned num_depth_stencil_bits,
+                  const GLenum * db_modes, unsigned num_db_modes,
+                  int visType)
+{
+   static const u_int8_t bits_table[3][4] = {
+            /* R  G  B  A */
+            { 5, 6, 5, 0 },  /* Any GL_UNSIGNED_SHORT_5_6_5 */
+            { 8, 8, 8, 0 },  /* Any RGB with any GL_UNSIGNED_INT_8_8_8_8 */
+            { 8, 8, 8, 8 }  /* Any RGBA with any GL_UNSIGNED_INT_8_8_8_8 */
+         };
+
+   /* The following arrays are all indexed by the fb_type masked with 0x07.
+    * Given the four supported fb_type values, this results in valid array
+    * indices of 3, 4, 5, and 7.
+    */
+   static const u_int32_t masks_table_rgb[8][4] = {
+            {0x00000000, 0x00000000, 0x00000000, 0x00000000},
+            {0x00000000, 0x00000000, 0x00000000, 0x00000000},
+            {0x00000000, 0x00000000, 0x00000000, 0x00000000},
+            {0x0000F800, 0x000007E0, 0x0000001F, 0x00000000},  /* 5_6_5       */
+            {0x0000001F, 0x000007E0, 0x0000F800, 0x00000000},  /* 5_6_5_REV   */
+            {0xFF000000, 0x00FF0000, 0x0000FF00, 0x00000000},  /* 8_8_8_8     */
+            {0x00000000, 0x00000000, 0x00000000, 0x00000000},
+            {0x000000FF, 0x0000FF00, 0x00FF0000, 0x00000000}  /* 8_8_8_8_REV */
+         };
+
+   static const u_int32_t masks_table_rgba[8][4] = {
+            {0x00000000, 0x00000000, 0x00000000, 0x00000000},
+            {0x00000000, 0x00000000, 0x00000000, 0x00000000},
+            {0x00000000, 0x00000000, 0x00000000, 0x00000000},
+            {0x0000F800, 0x000007E0, 0x0000001F, 0x00000000},  /* 5_6_5       */
+            {0x0000001F, 0x000007E0, 0x0000F800, 0x00000000},  /* 5_6_5_REV   */
+            {0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF},  /* 8_8_8_8     */
+            {0x00000000, 0x00000000, 0x00000000, 0x00000000},
+            {0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000},  /* 8_8_8_8_REV */
+         };
+
+   static const u_int32_t masks_table_bgr[8][4] = {
+            {0x00000000, 0x00000000, 0x00000000, 0x00000000},
+            {0x00000000, 0x00000000, 0x00000000, 0x00000000},
+            {0x00000000, 0x00000000, 0x00000000, 0x00000000},
+            {0x0000001F, 0x000007E0, 0x0000F800, 0x00000000},  /* 5_6_5       */
+            {0x0000F800, 0x000007E0, 0x0000001F, 0x00000000},  /* 5_6_5_REV   */
+            {0x0000FF00, 0x00FF0000, 0xFF000000, 0x00000000},  /* 8_8_8_8     */
+            {0x00000000, 0x00000000, 0x00000000, 0x00000000},
+            {0x00FF0000, 0x0000FF00, 0x000000FF, 0x00000000},  /* 8_8_8_8_REV */
+         };
+
+   static const u_int32_t masks_table_bgra[8][4] = {
+            {0x00000000, 0x00000000, 0x00000000, 0x00000000},
+            {0x00000000, 0x00000000, 0x00000000, 0x00000000},
+            {0x00000000, 0x00000000, 0x00000000, 0x00000000},
+            {0x0000001F, 0x000007E0, 0x0000F800, 0x00000000},  /* 5_6_5       */
+            {0x0000F800, 0x000007E0, 0x0000001F, 0x00000000},  /* 5_6_5_REV   */
+            {0x0000FF00, 0x00FF0000, 0xFF000000, 0x000000FF},  /* 8_8_8_8     */
+            {0x00000000, 0x00000000, 0x00000000, 0x00000000},
+            {0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000},  /* 8_8_8_8_REV */
+         };
+
+   static const u_int8_t bytes_per_pixel[8] = {
+            0, 0, 0, 2, 2, 4, 0, 4
+         };
+
+   const u_int8_t * bits;
+   const u_int32_t * masks;
+   const int index = fb_type & 0x07;
+   _EGLConfig *config;
+   unsigned i;
+   unsigned j;
+   unsigned k;
+
+   if ( bytes_per_pixel[index] == 0 ) {
+      _eglLog(_EGL_INFO,
+              "[%s:%u] Framebuffer type 0x%04x has 0 bytes per pixel.",
+              __FUNCTION__, __LINE__, fb_type);
+      return GL_FALSE;
+   }
+
+   /* Valid types are GL_UNSIGNED_SHORT_5_6_5 and GL_UNSIGNED_INT_8_8_8_8 and
+    * the _REV versions.
+    *
+    * Valid formats are GL_RGBA, GL_RGB, and GL_BGRA.
+    */
+   switch ( fb_format ) {
+   case GL_RGB:
+      bits = (bytes_per_pixel[index] == 2) ? bits_table[0] : bits_table[1];
+      masks = masks_table_rgb[index];
+      break;
+
+   case GL_RGBA:
+      bits = (bytes_per_pixel[index] == 2) ? bits_table[0] : bits_table[2];
+      masks = masks_table_rgba[index];
+      break;
+
+   case GL_BGR:
+      bits = (bytes_per_pixel[index] == 2) ? bits_table[0] : bits_table[1];
+      masks = masks_table_bgr[index];
+      break;
+
+   case GL_BGRA:
+      bits = (bytes_per_pixel[index] == 2) ? bits_table[0] : bits_table[2];
+      masks = masks_table_bgra[index];
+      break;
+
+   default:
+      _eglLog(_EGL_WARNING,
+              "[%s:%u] Framebuffer format 0x%04x is not GL_RGB, GL_RGBA, GL_BGR, or GL_BGRA.",
+              __FUNCTION__, __LINE__, fb_format);
+      return GL_FALSE;
+   }
+
+   config = configs;
+   for (k = 0; k < num_depth_stencil_bits; k++) {
+      for (i = 0; i < num_db_modes; i++)  {
+         for (j = 0; j < 2; j++) {
+            _eglSetConfigAttrib(config, EGL_RED_SIZE, bits[0]);
+            _eglSetConfigAttrib(config, EGL_GREEN_SIZE, bits[1]);
+            _eglSetConfigAttrib(config, EGL_BLUE_SIZE, bits[2]);
+            _eglSetConfigAttrib(config, EGL_ALPHA_SIZE, bits[3]);
+            _eglSetConfigAttrib(config, EGL_BUFFER_SIZE,
+                                bits[0] + bits[1] + bits[2] + bits[3]);
+
+            _eglSetConfigAttrib(config, EGL_STENCIL_SIZE, stencil_bits[k]);
+            _eglSetConfigAttrib(config, EGL_DEPTH_SIZE, depth_bits[i]);
+
+            _eglSetConfigAttrib(config, EGL_SURFACE_TYPE, EGL_SCREEN_BIT_MESA |
+                         EGL_PBUFFER_BIT | EGL_PIXMAP_BIT | EGL_WINDOW_BIT);
+
+            config++;
+         }
+      }
+   }
+   return GL_TRUE;
+}