Add EGL backend

14 files changed, 1745 insertions, 1 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index ffa75d7..43e1470 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,4 +1,4 @@
-SUBDIRS = . glx agl
+SUBDIRS = . glx agl egl
 
 lib_LTLIBRARIES = libglitz.la
 include_HEADERS = glitz.h
diff --git a/src/egl/.cvsignore b/src/egl/.cvsignore
new file mode 100644
index 0000000..6829f0d
--- /dev/null
+++ b/src/egl/.cvsignore
@@ -0,0 +1,7 @@
+Makefile
+Makefile.in
+*.la
+*.lo
+*.loT
+.libs
+.deps
diff --git a/src/egl/Makefile.am b/src/egl/Makefile.am
new file mode 100644
index 0000000..547bb84
--- /dev/null
+++ b/src/egl/Makefile.am
@@ -0,0 +1,40 @@
+if GLITZ_BUILD_EGL_BACKEND
+
+INCLUDES =	      \
+	$(GLITZ_INC)  \
+	$(EGL_CFLAGS)
+
+lib_LTLIBRARIES = libglitz-egl.la
+include_HEADERS = glitz-egl.h
+
+libglitz_egl_la_SOURCES =     \
+	glitz-egl.h	      \
+	glitz_egl_surface.c  \
+	glitz_egl_config.c    \
+	glitz_egl_info.c      \
+	glitz_egl_extension.c \
+	glitz_egl_context.c   \
+	glitz_egl_pbuffer.c   \
+	glitz_eglext.h	      \
+	glitz_eglint.h
+
+libglitz_egl_la_LDFLAGS = -version-info @VERSION_INFO@ -no-undefined
+libglitz_egl_la_LIBADD = $(GLITZ_LIB) $(EGL_LIBS)
+
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = glitz-egl.pc
+
+endif
+
+EXTRA_DIST =		      \
+	glitz-egl.h	      \
+	glitz_egl_surface.c  \
+	glitz_egl_config.c    \
+	glitz_egl_info.c      \
+	glitz_egl_extension.c \
+	glitz_egl_context.c   \
+	glitz_egl_pbuffer.c   \
+	glitz_eglext.h	      \
+	glitz_eglint.h	      \
+	glitz-egl.pc.in	      \
+	glitz-egl.man
diff --git a/src/egl/glitz-egl.h b/src/egl/glitz-egl.h
new file mode 100644
index 0000000..005732a
--- /dev/null
+++ b/src/egl/glitz-egl.h
@@ -0,0 +1,78 @@
+/*
+ * Copyright © 2004 David Reveman
+ * 
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * David Reveman not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior permission.
+ * David Reveman makes no representations about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ *
+ * DAVID REVEMAN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL DAVID REVEMAN BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, 
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: David Reveman <davidr@novell.com>
+ */
+
+#ifndef GLITZ_EGL_H_INCLUDED
+#define GLITZ_EGL_H_INCLUDED
+
+#include <GL/gl.h>
+#include <GLES/egl.h>
+
+#include <glitz.h>
+
+#if defined(__cplusplus) || defined(c_plusplus)
+extern "C" {
+#endif
+
+/* glitz_egl_info.c */
+
+void
+glitz_egl_init (const char *gl_library);
+
+void
+glitz_egl_fini (void);
+  
+  
+/* glitz_egl_config.c */
+
+glitz_drawable_format_t *
+glitz_egl_find_config          (EGLDisplay                    egl_display,
+                                EGLScreenMESA                 egl_screen,
+                                unsigned long                 mask,
+                                const glitz_drawable_format_t *templ,
+                                int                           count);
+
+/* glitz_egl_drawable.c */
+
+glitz_drawable_t *
+glitz_egl_create_window_surface (EGLDisplay              display,
+                                      EGLScreenMESA           screen,
+                                      glitz_drawable_format_t *format,
+                                      NativeWindowType        window,
+                                      unsigned int            width,
+                                      unsigned int            height);
+
+glitz_drawable_t *
+glitz_egl_create_pbuffer_surface (EGLDisplay              display,
+                                   EGLScreenMESA           screen,
+                                   glitz_drawable_format_t *format,
+                                   unsigned int            width,
+                                   unsigned int            height);
+
+
+#if defined(__cplusplus) || defined(c_plusplus)
+}
+#endif
+
+#endif /* GLITZ_EGL_H_INCLUDED */
diff --git a/src/egl/glitz-egl.man b/src/egl/glitz-egl.man
new file mode 100644
index 0000000..1387f41
--- /dev/null
+++ b/src/egl/glitz-egl.man
@@ -0,0 +1,27 @@
+.\"
+.\"
+.de TQ
+.br
+.ns
+.TP
+\\$1
+..
+.TH GLITZ-EGL 3 "Version 1.0"
+
+.SH NAME
+GLITZ-EGL \- EGL interface to glitz
+
+.SH SYNOPSIS
+.nf
+.B #include <glitz-egl.h>
+.fi
+.SH DESCRIPTION
+
+EGL interface to glitz.
+
+.SH AUTHOR
+David Reveman
+Jon Smirl
+
+.SH "SEE ALSO"
+.BR GLITZ (3)
diff --git a/src/egl/glitz-egl.pc.in b/src/egl/glitz-egl.pc.in
new file mode 100644
index 0000000..6182874
--- /dev/null
+++ b/src/egl/glitz-egl.pc.in
@@ -0,0 +1,11 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: libglitz-egl
+Description: OpenGL compositing library (EGL backend)
+Version: @VERSION@
+Requires: glitz
+Libs: -L${libdir} -lglitz-egl @EGL_LIBS@
+Cflags: -I${includedir} @EGL_CFLAGS@
diff --git a/src/egl/glitz_egl_config.c b/src/egl/glitz_egl_config.c
new file mode 100644
index 0000000..671c6d9
--- /dev/null
+++ b/src/egl/glitz_egl_config.c
@@ -0,0 +1,221 @@
+/*
+ * Copyright © 2004 David Reveman
+ * 
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * David Reveman not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior permission.
+ * David Reveman makes no representations about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ *
+ * DAVID REVEMAN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL DAVID REVEMAN BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, 
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: David Reveman <davidr@novell.com>
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "../config.h"
+#endif
+
+#include "glitz_eglint.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+static int
+_glitz_egl_format_compare (const void *elem1,
+                           const void *elem2)
+{
+  int i, score[2];
+  glitz_drawable_format_t *format[2];
+  
+  format[0] = (glitz_drawable_format_t *) elem1;
+  format[1] = (glitz_drawable_format_t *) elem2;
+  i = score[0] = score[1] = 0;
+
+  for (; i < 2; i++) {
+    if (format[i]->color.red_size) {
+      if (format[i]->color.red_size == 8)
+        score[i] += 5;
+      score[i] += 10;
+    }
+
+    if (format[i]->color.green_size) {
+      if (format[i]->color.green_size == 8)
+        score[i] += 5;
+      score[i] += 10;
+    }
+    
+    if (format[i]->color.alpha_size) {
+      if (format[i]->color.alpha_size == 8)
+        score[i] += 5;
+      score[i] += 10;
+    }
+
+    if (format[i]->stencil_size)
+      score[i] += 5;
+
+    if (format[i]->depth_size)
+      score[i] += 5;
+
+    if (format[i]->doublebuffer)
+      score[i] += 10;
+    
+    if (format[i]->types.window)
+      score[i] += 10;
+    
+    if (format[i]->types.pbuffer)
+      score[i] += 10;
+    
+    if (format[i]->samples > 1) 
+      score[i] -= (20 - format[i]->samples);
+  }
+  
+  return score[1] - score[0];
+}
+
+static void
+_glitz_add_format (glitz_egl_screen_info_t *screen_info,
+                   glitz_drawable_format_t *format,
+                   EGLConfig               egl_id)
+{
+  if (!glitz_drawable_format_find (screen_info->formats,
+                                   screen_info->n_formats,
+                                   GLITZ_DRAWABLE_FORMAT_ALL_EXCEPT_ID_MASK,
+                                   format, 0)) {
+    int n = screen_info->n_formats;
+    
+    screen_info->formats =
+      realloc (screen_info->formats,
+               sizeof (glitz_drawable_format_t) * (n + 1));
+    screen_info->egl_config_ids =
+      realloc (screen_info->egl_config_ids, sizeof (EGLConfig) * (n + 1));
+
+    if (screen_info->formats && screen_info->egl_config_ids) {
+      screen_info->formats[n] = *format;
+      screen_info->formats[n].id = n;
+      screen_info->egl_config_ids[n] = egl_id;
+      screen_info->n_formats++;
+    }
+  }
+}
+
+static glitz_status_t
+_glitz_egl_query_configs (glitz_egl_screen_info_t *screen_info)
+{
+  EGLDisplay egl_display;
+  glitz_drawable_format_t format;
+  EGLConfig *egl_configs;
+  int i, num_configs;
+  EGLConfig egl_id;
+  
+  egl_display = screen_info->display_info->egl_display;
+
+  eglGetConfigs(egl_display, NULL, 0, &num_configs);
+  egl_configs = malloc(sizeof(*egl_configs) * num_configs);
+  eglGetConfigs(egl_display, egl_configs, num_configs, &num_configs);
+
+  for (i = 0; i < num_configs; i++) {
+    int value;
+    
+    eglGetConfigAttrib(egl_display, egl_configs[i],
+                              EGL_SURFACE_TYPE, &value);
+    if (!((value & EGL_WINDOW_BIT) || (value & EGL_PBUFFER_BIT)))
+      continue;
+    
+    format.types.window = (value & EGL_WINDOW_BIT)? 1: 0;
+    format.types.pbuffer = (value & EGL_PBUFFER_BIT)? 1: 0;
+    format.id = 0;
+    
+    eglGetConfigAttrib(egl_display, egl_configs[i], EGL_CONFIG_ID, &value);
+    egl_id = (EGLConfig) value;
+
+    eglGetConfigAttrib(egl_display, egl_configs[i], EGL_RED_SIZE, &value);
+    format.color.red_size = (unsigned short) value;
+    eglGetConfigAttrib(egl_display, egl_configs[i], EGL_GREEN_SIZE, &value);
+    format.color.green_size = (unsigned short) value;
+    eglGetConfigAttrib(egl_display, egl_configs[i], EGL_BLUE_SIZE, &value);
+    format.color.blue_size = (unsigned short) value;
+    eglGetConfigAttrib(egl_display, egl_configs[i], EGL_ALPHA_SIZE, &value);
+    format.color.alpha_size = (unsigned short) value;
+    eglGetConfigAttrib(egl_display, egl_configs[i], EGL_DEPTH_SIZE, &value);
+    format.depth_size = (unsigned short) value;
+    eglGetConfigAttrib(egl_display, egl_configs[i], EGL_STENCIL_SIZE, &value);
+    format.stencil_size = (unsigned short) value;
+
+    format.doublebuffer = 1;
+
+    eglGetConfigAttrib(egl_display, egl_configs[i], EGL_SAMPLE_BUFFERS, &value);
+    if (value) {
+      eglGetConfigAttrib(egl_display, egl_configs[i], EGL_SAMPLES, &value);
+      format.samples = (unsigned short) (value > 1)? value: 1;
+      if (format.samples > 1)
+          format.types.pbuffer = 0;
+    } else
+      format.samples = 1;
+    
+    _glitz_add_format (screen_info, &format, egl_id);
+  }
+  
+  free(egl_configs);
+
+  return GLITZ_STATUS_SUCCESS;
+}
+
+void
+glitz_egl_query_configs (glitz_egl_screen_info_t *screen_info)
+{
+  EGLConfig *egl_new_ids;
+  int i;
+
+  _glitz_egl_query_configs (screen_info);
+
+  if (!screen_info->n_formats)
+    return;
+
+  qsort (screen_info->formats, screen_info->n_formats, 
+         sizeof (glitz_drawable_format_t), _glitz_egl_format_compare);
+
+  /*
+   * Update XID list so that it matches the sorted format list.
+   */
+  egl_new_ids = malloc (sizeof (EGLConfig) * screen_info->n_formats);
+  if (!egl_new_ids) {
+    screen_info->n_formats = 0;
+    return;
+  }
+  
+  for (i = 0; i < screen_info->n_formats; i++) {
+    egl_new_ids[i] = screen_info->egl_config_ids[screen_info->formats[i].id];
+    screen_info->formats[i].id = i;
+  }
+  
+  free (screen_info->egl_config_ids);
+  screen_info->egl_config_ids = egl_new_ids;
+}
+
+glitz_drawable_format_t *
+glitz_egl_find_config (EGLDisplay                    egl_display,
+                       EGLScreenMESA                 egl_screen,
+                       unsigned long                 mask,
+                       const glitz_drawable_format_t *templ,
+                       int                           count)
+{
+  glitz_egl_screen_info_t *screen_info =
+    glitz_egl_screen_info_get (egl_display, egl_screen);
+
+  return glitz_drawable_format_find (screen_info->formats,
+                                     screen_info->n_formats,
+                                     mask, templ, count);
+}
+slim_hidden_def(glitz_egl_find_config);
diff --git a/src/egl/glitz_egl_context.c b/src/egl/glitz_egl_context.c
new file mode 100644
index 0000000..89d77d3
--- /dev/null
+++ b/src/egl/glitz_egl_context.c
@@ -0,0 +1,357 @@
+/*
+ * Copyright © 2004 David Reveman
+ * 
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * David Reveman not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior permission.
+ * David Reveman makes no representations about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ *
+ * DAVID REVEMAN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL DAVID REVEMAN BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, 
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: David Reveman <davidr@novell.com>
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "../config.h"
+#endif
+
+#include "glitz_eglint.h"
+
+#include <stdlib.h>
+
+extern glitz_gl_proc_address_list_t _glitz_egl_gl_proc_address;
+
+static void
+_glitz_egl_context_create (glitz_egl_screen_info_t *screen_info,
+                                          EGLConfig               egl_config,
+                                          EGLContext              egl_share_list,
+                                          glitz_egl_context_t     *context)
+{
+  context->id = egl_config;
+  context->egl_context = eglCreateContext (screen_info->display_info->egl_display,
+                                         egl_config, egl_share_list, NULL);
+}
+
+static glitz_context_t *
+_glitz_egl_create_context (void                    *abstract_drawable,
+                           glitz_drawable_format_t *format)
+{
+  glitz_egl_surface_t *drawable = (glitz_egl_surface_t *) abstract_drawable;
+  glitz_egl_screen_info_t *screen_info = drawable->screen_info;
+  int format_id = screen_info->egl_config_ids[format->id];
+  glitz_egl_context_t *context;
+  
+  context = malloc (sizeof (glitz_egl_context_t));
+  if (!context)
+    return NULL;
+
+  _glitz_context_init (&context->base, &drawable->base);
+  
+  _glitz_egl_context_create (screen_info,
+                             format_id,
+                             screen_info->egl_root_context,
+                             context);
+
+  return (glitz_context_t *) context;
+}
+
+static void
+_glitz_egl_context_destroy (void *abstract_context)
+{
+  glitz_egl_context_t *context = (glitz_egl_context_t *) abstract_context;
+  glitz_egl_surface_t *drawable = (glitz_egl_surface_t *)
+      context->base.drawable;
+  
+  if (drawable->screen_info->display_info->thread_info->cctx == &context->base)
+  {
+      eglMakeCurrent (drawable->screen_info->display_info->egl_display,
+                      EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+  
+      drawable->screen_info->display_info->thread_info->cctx = NULL;
+  }
+
+  eglDestroyContext (drawable->screen_info->display_info->egl_display,
+                     context->egl_context);
+
+  _glitz_context_fini (&context->base);
+  
+  free (context);
+}
+
+static void
+_glitz_egl_copy_context (void          *abstract_src,
+                         void          *abstract_dst,
+                         unsigned long mask)
+{
+  glitz_egl_context_t  *src = (glitz_egl_context_t *) abstract_src;
+  glitz_egl_context_t  *dst = (glitz_egl_context_t *) abstract_dst;
+  glitz_egl_surface_t *drawable = (glitz_egl_surface_t *)
+      src->base.drawable;
+
+  eglCopyContextMESA (drawable->screen_info->display_info->egl_display,
+                  src->egl_context, dst->egl_context, mask);
+}
+
+static void
+_glitz_egl_make_current (void *abstract_context,
+                         void *abstract_drawable)
+{
+  glitz_egl_context_t  *context = (glitz_egl_context_t *) abstract_context;
+  glitz_egl_surface_t *drawable = (glitz_egl_surface_t *) abstract_drawable;
+  glitz_egl_display_info_t *display_info = drawable->screen_info->display_info;
+  
+  if ((eglGetCurrentContext () != context->egl_context) ||
+      (eglGetCurrentSurface ( 0 ) != drawable->egl_surface))
+    eglMakeCurrent (display_info->egl_display, drawable->egl_surface,
+                    drawable->egl_surface, context->egl_context);
+
+  display_info->thread_info->cctx = &context->base;
+}
+
+static glitz_function_pointer_t
+_glitz_egl_context_get_proc_address (void       *abstract_context,
+                                     const char *name)
+{
+  glitz_egl_context_t  *context = (glitz_egl_context_t *) abstract_context;
+  glitz_egl_surface_t *drawable = (glitz_egl_surface_t *)
+      context->base.drawable;
+
+  _glitz_egl_make_current (context, drawable);
+  
+  return glitz_egl_get_proc_address (name, drawable->screen_info);
+}
+
+glitz_egl_context_t *
+glitz_egl_context_get (glitz_egl_screen_info_t *screen_info,
+                       glitz_drawable_format_t *format)
+{
+  glitz_egl_context_t *context;
+  glitz_egl_context_t **contexts = screen_info->contexts;
+  int index, n_contexts = screen_info->n_contexts;
+  EGLConfig egl_config_id;
+
+  for (; n_contexts; n_contexts--, contexts++)
+    if ((*contexts)->id == screen_info->egl_config_ids[format->id])
+      return *contexts;
+
+  index = screen_info->n_contexts++;
+
+  screen_info->contexts =
+    realloc (screen_info->contexts,
+             sizeof (glitz_egl_context_t *) * screen_info->n_contexts);
+  if (!screen_info->contexts)
+    return NULL;
+
+  context = malloc (sizeof (glitz_egl_context_t));
+  if (!context)
+    return NULL;
+  
+  screen_info->contexts[index] = context;
+
+  egl_config_id = screen_info->egl_config_ids[format->id];
+
+  _glitz_egl_context_create (screen_info,
+                             egl_config_id,
+                             screen_info->egl_root_context,
+                             context);
+  
+  if (!screen_info->egl_root_context)
+    screen_info->egl_root_context = context->egl_context;
+
+  memcpy (&context->backend.gl,
+          &_glitz_egl_gl_proc_address,
+          sizeof (glitz_gl_proc_address_list_t));
+
+  context->backend.create_pbuffer = glitz_egl_create_pbuffer;
+  context->backend.destroy = glitz_egl_destroy;
+  context->backend.push_current = glitz_egl_push_current;
+  context->backend.pop_current = glitz_egl_pop_current;
+  context->backend.swap_buffers = glitz_egl_swap_buffers;
+  
+  context->backend.create_context = _glitz_egl_create_context;
+  context->backend.destroy_context = _glitz_egl_context_destroy;
+  context->backend.copy_context = _glitz_egl_copy_context;
+  context->backend.make_current = _glitz_egl_make_current;
+  context->backend.get_proc_address = _glitz_egl_context_get_proc_address;
+  
+  context->backend.drawable_formats = screen_info->formats;
+  context->backend.n_drawable_formats = screen_info->n_formats;
+
+  context->backend.texture_formats = NULL;
+  context->backend.formats = NULL;
+  context->backend.n_formats = 0;
+  
+  context->backend.program_map = &screen_info->program_map;
+  context->backend.feature_mask = 0;
+
+  context->initialized = 0;
+  
+  return context;
+}
+
+void
+glitz_egl_context_destroy (glitz_egl_screen_info_t *screen_info,
+                           glitz_egl_context_t     *context)
+{
+  if (context->backend.formats)
+    free (context->backend.formats);
+
+  if (context->backend.texture_formats)
+    free (context->backend.texture_formats);
+  
+  eglDestroyContext (screen_info->display_info->egl_display,
+                     context->egl_context);
+  free (context);
+}
+
+static void
+_glitz_egl_context_initialize (glitz_egl_screen_info_t *screen_info,
+                               glitz_egl_context_t     *context)
+{
+  const char *version;
+    
+  glitz_backend_init (&context->backend,
+                      glitz_egl_get_proc_address,
+                      (void *) screen_info);
+
+  context->backend.gl.get_integer_v (GLITZ_GL_MAX_VIEWPORT_DIMS,
+                                     context->max_viewport_dims);
+
+  glitz_initiate_state (&_glitz_egl_gl_proc_address);
+
+  version = (const char *) context->backend.gl.get_string (GLITZ_GL_VERSION);
+  if (version)
+  {
+    /* Having trouble with TexSubImage2D to NPOT GL_TEXTURE_2D textures when
+       using nvidia's binary driver. Seems like a driver issue, but I'm not
+       sure yet. Turning of NPOT GL_TEXTURE_2D textures until this have been
+       solved. */
+    if (strstr (version, "NVIDIA 61.11") ||
+        strstr (version, "NVIDIA 66.29"))
+    {
+      context->backend.feature_mask &=
+        ~GLITZ_FEATURE_TEXTURE_NON_POWER_OF_TWO_MASK;
+    }
+  }
+    
+  context->initialized = 1;
+}
+
+static void
+_glitz_egl_context_make_current (glitz_egl_surface_t *drawable,
+                                 glitz_bool_t         finish)
+{
+  glitz_egl_display_info_t *display_info = drawable->screen_info->display_info;
+                                 
+  if (finish)
+    glFinish ();
+
+  if (display_info->thread_info->cctx)
+  {
+      glitz_context_t *ctx = display_info->thread_info->cctx;
+
+      if (ctx->lose_current)
+          ctx->lose_current (ctx->closure);
+
+      display_info->thread_info->cctx = NULL;
+  }
+
+  eglMakeCurrent (display_info->egl_display,
+                  drawable->egl_surface, drawable->egl_surface,
+                  drawable->context->egl_context);
+  
+  drawable->base.update_all = 1;
+  
+  if (!drawable->context->initialized)
+    _glitz_egl_context_initialize (drawable->screen_info, drawable->context);
+}
+
+static void
+_glitz_egl_context_update (glitz_egl_surface_t *drawable,
+                           glitz_constraint_t   constraint)
+{
+  EGLContext egl_context;
+  
+  switch (constraint) {
+  case GLITZ_NONE:
+    break;
+  case GLITZ_ANY_CONTEXT_CURRENT: {
+    glitz_egl_display_info_t *dinfo = drawable->screen_info->display_info;
+    
+    if (dinfo->thread_info->cctx)
+    {
+      _glitz_egl_context_make_current (drawable, 0);
+    }
+    else
+    {
+      egl_context = eglGetCurrentContext ();
+      if (egl_context == (EGLContext) 0)
+        _glitz_egl_context_make_current (drawable, 0);
+    }
+    } break;
+  case GLITZ_CONTEXT_CURRENT:
+    egl_context = eglGetCurrentContext ();
+    if (egl_context != drawable->context->egl_context)
+      _glitz_egl_context_make_current (drawable, (egl_context)? 1: 0);
+    break;
+  case GLITZ_DRAWABLE_CURRENT:
+    egl_context = eglGetCurrentContext ();
+    if ((egl_context != drawable->context->egl_context) ||
+        (eglGetCurrentSurface ( 0 ) != drawable->egl_surface))
+      _glitz_egl_context_make_current (drawable, (egl_context)? 1: 0);
+    break;
+  }
+}
+
+void
+glitz_egl_push_current (void               *abstract_drawable,
+                        glitz_surface_t    *surface,
+                        glitz_constraint_t constraint)
+{
+  glitz_egl_surface_t *drawable = (glitz_egl_surface_t *) abstract_drawable;
+  glitz_egl_context_info_t *context_info;
+  int index;
+
+  index = drawable->screen_info->context_stack_size++;
+
+  context_info = &drawable->screen_info->context_stack[index];
+  context_info->drawable = drawable;
+  context_info->surface = surface;
+  context_info->constraint = constraint;
+  
+  _glitz_egl_context_update (context_info->drawable, constraint);
+}
+
+glitz_surface_t *
+glitz_egl_pop_current (void *abstract_drawable)
+{
+  glitz_egl_surface_t *drawable = (glitz_egl_surface_t *) abstract_drawable;
+  glitz_egl_context_info_t *context_info = NULL;
+  int index;
+
+  drawable->screen_info->context_stack_size--;
+  index = drawable->screen_info->context_stack_size - 1;
+
+  context_info = &drawable->screen_info->context_stack[index];
+
+  if (context_info->drawable)
+    _glitz_egl_context_update (context_info->drawable,
+                               context_info->constraint);
+  
+  if (context_info->constraint == GLITZ_DRAWABLE_CURRENT)
+      return context_info->surface;
+  
+  return NULL;
+}
diff --git a/src/egl/glitz_egl_extension.c b/src/egl/glitz_egl_extension.c
new file mode 100644
index 0000000..67ae1c0
--- /dev/null
+++ b/src/egl/glitz_egl_extension.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright © 2004 David Reveman
+ * 
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * David Reveman not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior permission.
+ * David Reveman makes no representations about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ *
+ * DAVID REVEMAN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL DAVID REVEMAN BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, 
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: David Reveman <davidr@novell.com>
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "../config.h"
+#endif
+
+#include "glitz_eglint.h"
+
+#if 0
+static glitz_extension_map egl_extensions[] = {
+  { 0.0, "EGL_SGIX_fbconfig", GLITZ_EGL_FEATURE_FBCONFIG_MASK },
+  { 0.0, "EGL_SGIX_pbuffer", GLITZ_EGL_FEATURE_PBUFFER_MASK },
+  { 0.0, "EGL_SGI_make_current_read",
+    GLITZ_EGL_FEATURE_MAKE_CURRENT_READ_MASK },
+  { 0.0, "EGL_ARB_multisample", GLITZ_EGL_FEATURE_MULTISAMPLE_MASK },
+  { 0.0, NULL, 0 }
+};
+#endif
+
+void
+glitz_egl_query_extensions (glitz_egl_screen_info_t *screen_info,
+                            glitz_gl_float_t        egl_version)
+{
+#if 0
+  const char *egl_extensions_string;
+
+  egl_extensions_string =
+    eglQueryExtensionsString (screen_info->display_info->display,
+                              screen_info->screen);
+  
+  screen_info->egl_feature_mask =
+    glitz_extensions_query (egl_version,
+                            egl_extensions_string,
+                            egl_extensions);
+  
+  if (screen_info->egl_feature_mask & GLITZ_EGL_FEATURE_MULTISAMPLE_MASK) {
+    const char *vendor;
+
+    vendor = eglGetClientString (screen_info->display_info->display,
+                                 EGL_VENDOR);
+    
+    if (vendor) {
+      
+      /* NVIDIA's driver seem to support multisample with pbuffers */
+      if (!strncmp ("NVIDIA", vendor, 6))
+        screen_info->egl_feature_mask |=
+          GLITZ_EGL_FEATURE_PBUFFER_MULTISAMPLE_MASK;
+    }
+  }
+#endif
+}
diff --git a/src/egl/glitz_egl_info.c b/src/egl/glitz_egl_info.c
new file mode 100644
index 0000000..514de5c
--- /dev/null
+++ b/src/egl/glitz_egl_info.c
@@ -0,0 +1,432 @@
+/*
+ * Copyright © 2004 David Reveman
+ * 
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * David Reveman not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior permission.
+ * David Reveman makes no representations about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ *
+ * DAVID REVEMAN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL DAVID REVEMAN BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, 
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: David Reveman <davidr@novell.com>
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "../config.h"
+#endif
+
+#include "glitz_eglint.h"
+
+#include <pthread.h>
+#include <string.h>
+#include <dlfcn.h>
+
+glitz_gl_proc_address_list_t _glitz_egl_gl_proc_address = {
+
+  /* core */
+  (glitz_gl_enable_t) glEnable,
+  (glitz_gl_disable_t) glDisable,
+  (glitz_gl_get_error_t) glGetError,
+  (glitz_gl_get_string_t) glGetString,
+  (glitz_gl_enable_client_state_t) glEnableClientState,
+  (glitz_gl_disable_client_state_t) glDisableClientState,
+  (glitz_gl_vertex_pointer_t) glVertexPointer,
+  (glitz_gl_tex_coord_pointer_t) glTexCoordPointer,
+  (glitz_gl_draw_arrays_t) glDrawArrays,
+  (glitz_gl_tex_env_f_t) glTexEnvf,
+  (glitz_gl_tex_env_fv_t) glTexEnvfv,
+  (glitz_gl_tex_gen_i_t) glTexGeni,
+  (glitz_gl_tex_gen_fv_t) glTexGenfv,
+  (glitz_gl_color_4us_t) glColor4us,
+  (glitz_gl_color_4f_t) glColor4f,
+  (glitz_gl_scissor_t) glScissor,
+  (glitz_gl_blend_func_t) glBlendFunc,
+  (glitz_gl_clear_t) glClear,
+  (glitz_gl_clear_color_t) glClearColor,
+  (glitz_gl_clear_stencil_t) glClearStencil,
+  (glitz_gl_stencil_func_t) glStencilFunc,
+  (glitz_gl_stencil_op_t) glStencilOp,
+  (glitz_gl_push_attrib_t) glPushAttrib,
+  (glitz_gl_pop_attrib_t) glPopAttrib,
+  (glitz_gl_matrix_mode_t) glMatrixMode,
+  (glitz_gl_push_matrix_t) glPushMatrix,
+  (glitz_gl_pop_matrix_t) glPopMatrix,
+  (glitz_gl_load_identity_t) glLoadIdentity,
+  (glitz_gl_load_matrix_f_t) glLoadMatrixf,
+  (glitz_gl_depth_range_t) glDepthRange,
+  (glitz_gl_viewport_t) glViewport,
+  (glitz_gl_raster_pos_2f_t) glRasterPos2f,
+  (glitz_gl_bitmap_t) glBitmap,
+  (glitz_gl_read_buffer_t) glReadBuffer,
+  (glitz_gl_draw_buffer_t) glDrawBuffer,
+  (glitz_gl_copy_pixels_t) glCopyPixels,
+  (glitz_gl_flush_t) glFlush,
+  (glitz_gl_finish_t) glFinish,
+  (glitz_gl_pixel_store_i_t) glPixelStorei,
+  (glitz_gl_ortho_t) glOrtho,
+  (glitz_gl_scale_f_t) glScalef,
+  (glitz_gl_translate_f_t) glTranslatef,
+  (glitz_gl_hint_t) glHint,
+  (glitz_gl_depth_mask_t) glDepthMask,
+  (glitz_gl_polygon_mode_t) glPolygonMode,
+  (glitz_gl_shade_model_t) glShadeModel,
+  (glitz_gl_color_mask_t) glColorMask,
+  (glitz_gl_read_pixels_t) glReadPixels,
+  (glitz_gl_get_tex_image_t) glGetTexImage,
+  (glitz_gl_tex_sub_image_2d_t) glTexSubImage2D,
+  (glitz_gl_gen_textures_t) glGenTextures,
+  (glitz_gl_delete_textures_t) glDeleteTextures,
+  (glitz_gl_bind_texture_t) glBindTexture,
+  (glitz_gl_tex_image_2d_t) glTexImage2D,
+  (glitz_gl_tex_parameter_i_t) glTexParameteri,
+  (glitz_gl_get_tex_level_parameter_iv_t) glGetTexLevelParameteriv,
+  (glitz_gl_copy_tex_sub_image_2d_t) glCopyTexSubImage2D,
+  (glitz_gl_get_integer_v_t) glGetIntegerv,
+
+  /* extensions */
+  (glitz_gl_blend_color_t) 0,
+  (glitz_gl_active_texture_t) 0,
+  (glitz_gl_client_active_texture_t) 0,
+  (glitz_gl_multi_draw_arrays_t) 0,
+  (glitz_gl_gen_programs_t) 0,
+  (glitz_gl_delete_programs_t) 0,
+  (glitz_gl_program_string_t) 0,
+  (glitz_gl_bind_program_t) 0,
+  (glitz_gl_program_local_param_4fv_t) 0,
+  (glitz_gl_get_program_iv_t) 0,
+  (glitz_gl_gen_buffers_t) 0,
+  (glitz_gl_delete_buffers_t) 0,
+  (glitz_gl_bind_buffer_t) 0,
+  (glitz_gl_buffer_data_t) 0,
+  (glitz_gl_buffer_sub_data_t) 0,
+  (glitz_gl_get_buffer_sub_data_t) 0,
+  (glitz_gl_map_buffer_t) 0,
+  (glitz_gl_unmap_buffer_t) 0
+};
+
+glitz_function_pointer_t
+glitz_egl_get_proc_address (const char *name,
+                            void       *closure)
+{
+  glitz_egl_screen_info_t *screen_info = (glitz_egl_screen_info_t *) closure;
+  glitz_egl_thread_info_t *info = screen_info->display_info->thread_info;
+  glitz_function_pointer_t address = NULL;
+
+  if (screen_info->egl_feature_mask & GLITZ_EGL_FEATURE_GET_PROC_ADDRESS_MASK)
+    address = eglGetProcAddress ((glitz_gl_ubyte_t *) name);
+  
+  if (!address) {
+    if (!info->dlhand)
+      info->dlhand = dlopen (info->gl_library, RTLD_LAZY);
+    
+    if (info->dlhand) {
+      dlerror ();
+      address = (glitz_function_pointer_t) dlsym (info->dlhand, name);
+      if (dlerror () != NULL)
+        address = NULL;
+    }
+  }
+  
+  return address;
+}
+
+static void
+_glitz_egl_display_destroy (glitz_egl_display_info_t *display_info);
+
+static void
+_glitz_egl_screen_destroy (glitz_egl_screen_info_t *screen_info);
+
+static void
+_glitz_egl_thread_info_fini (glitz_egl_thread_info_t *thread_info)
+{
+  int i;
+  
+  for (i = 0; i < thread_info->n_displays; i++)
+    _glitz_egl_display_destroy (thread_info->displays[i]);
+
+  free (thread_info->displays);
+  
+  thread_info->displays = NULL;
+  thread_info->n_displays = 0;
+
+  if (thread_info->gl_library) {
+    free (thread_info->gl_library);
+    thread_info->gl_library = NULL;
+  }
+
+  if (thread_info->dlhand) {
+    dlclose (thread_info->dlhand);
+    thread_info->dlhand = NULL;
+  }
+  
+  thread_info->cctx = NULL;
+}
+#define PTHREADS
+#ifdef PTHREADS
+
+/* thread safe */
+static int tsd_initialized = 0;
+static pthread_key_t info_tsd;
+
+static void
+_glitz_egl_thread_info_init (glitz_egl_thread_info_t *thread_info)
+{
+  thread_info->displays = NULL;
+  thread_info->n_displays = 0;
+  thread_info->gl_library = NULL;
+  thread_info->dlhand = NULL;
+  thread_info->cctx = NULL;
+}
+
+static void
+_glitz_egl_thread_info_destroy (glitz_egl_thread_info_t *thread_info)
+{
+  pthread_setspecific (info_tsd, NULL);
+  
+  if (thread_info) {
+    _glitz_egl_thread_info_fini (thread_info);
+    free (thread_info);
+  }
+}
+
+static void
+_tsd_destroy (void *p)
+{
+  if (p) {
+    _glitz_egl_thread_info_fini ((glitz_egl_thread_info_t *) p);
+    free (p);
+  }
+}
+
+static glitz_egl_thread_info_t *
+_glitz_egl_thread_info_get (const char *gl_library)
+{
+  glitz_egl_thread_info_t *thread_info;
+  void *p;
+    
+  if (!tsd_initialized) {
+    pthread_key_create (&info_tsd, _tsd_destroy);
+    tsd_initialized = 1;
+  }
+
+  p = pthread_getspecific (info_tsd);
+  
+  if (p == NULL) {
+    thread_info = malloc (sizeof (glitz_egl_thread_info_t));
+    _glitz_egl_thread_info_init (thread_info);
+    
+    pthread_setspecific (info_tsd, thread_info);
+  } else
+    thread_info = (glitz_egl_thread_info_t *) p;
+  
+  if (gl_library) {
+    int len = strlen (gl_library);
+
+    if (thread_info->gl_library) {
+      free (thread_info->gl_library);
+      thread_info->gl_library = NULL;
+    }
+      
+    thread_info->gl_library = malloc (len + 1);
+    if (thread_info->gl_library) {
+      memcpy (thread_info->gl_library, gl_library, len);
+      thread_info->gl_library[len] = '\0';
+    }
+  }
+
+  return thread_info;
+}
+
+#else
+
+/* not thread safe */
+static glitz_egl_thread_info_t thread_info = {
+  NULL,
+  0,
+  NULL,
+  NULL
+};
+
+static void
+_glitz_egl_thread_info_destroy (glitz_egl_thread_info_t *thread_info)
+{
+  if (thread_info)
+    _glitz_egl_thread_info_fini (thread_info);
+}
+
+static glitz_egl_thread_info_t *
+_glitz_egl_thread_info_get (const char *gl_library)
+{
+  if (gl_library) {
+    int len = strlen (gl_library);
+
+    if (thread_info.gl_library) {
+      free (thread_info.gl_library);
+      thread_info.gl_library = NULL;
+    }
+    
+    thread_info.gl_library = malloc (len + 1);
+    if (thread_info.gl_library) {
+      memcpy (thread_info.gl_library, gl_library, len);
+      thread_info.gl_library[len] = '\0';
+    }
+  }
+  
+  return &thread_info;
+}
+
+#endif
+
+static glitz_egl_display_info_t *
+_glitz_egl_display_info_get (EGLDisplay egl_display)
+{
+  glitz_egl_display_info_t *display_info;
+  glitz_egl_thread_info_t *thread_info = _glitz_egl_thread_info_get (NULL);
+  glitz_egl_display_info_t **displays = thread_info->displays;
+  int index, n_displays = thread_info->n_displays;
+
+  for (; n_displays; n_displays--, displays++)
+    if ((*displays)->egl_display == egl_display)
+      return *displays;
+
+  index = thread_info->n_displays++;
+
+  thread_info->displays =
+    realloc (thread_info->displays,
+             sizeof (glitz_egl_display_info_t *) * thread_info->n_displays);
+
+  display_info = malloc (sizeof (glitz_egl_display_info_t));
+  thread_info->displays[index] = display_info;
+  
+  display_info->thread_info = thread_info;
+  display_info->egl_display = egl_display;
+  display_info->screens = NULL;
+  display_info->n_screens = 0;
+  
+  return display_info;
+}
+
+static void
+_glitz_egl_display_destroy (glitz_egl_display_info_t *display_info)
+{
+  int i;
+  
+  for (i = 0; i < display_info->n_screens; i++)
+    _glitz_egl_screen_destroy (display_info->screens[i]);
+
+  if (display_info->screens)
+    free (display_info->screens);
+  
+  free (display_info);
+}
+
+glitz_egl_screen_info_t *
+glitz_egl_screen_info_get (EGLDisplay    display,
+                           EGLScreenMESA screen)
+{
+  glitz_egl_screen_info_t *screen_info;
+  glitz_egl_display_info_t *display_info =
+    _glitz_egl_display_info_get (display);
+  glitz_egl_screen_info_t **screens = display_info->screens;
+  int index, n_screens = display_info->n_screens;
+#if 0
+  int error_base, event_base;
+#endif  
+
+  for (; n_screens; n_screens--, screens++)
+    if ((*screens)->screen == screen)
+      return *screens;
+
+  index = display_info->n_screens++;
+
+  display_info->screens =
+    realloc (display_info->screens,
+             sizeof (glitz_egl_screen_info_t *) * display_info->n_screens);
+  
+  screen_info = malloc (sizeof (glitz_egl_screen_info_t));
+  display_info->screens[index] = screen_info;
+  
+  screen_info->display_info = display_info;
+  screen_info->screen = screen;
+  screen_info->drawables = 0;
+  screen_info->formats = NULL;
+  screen_info->egl_config_ids = NULL;
+  screen_info->n_formats = 0;
+
+  screen_info->contexts = NULL;
+  screen_info->n_contexts = 0;
+  
+  glitz_program_map_init (&screen_info->program_map);
+  
+  screen_info->egl_root_context = (EGLContext) 0;
+  screen_info->egl_feature_mask = 0;
+#if 0
+  if (eglQueryExtension (display, &error_base, &event_base)) {
+    int major, minor;
+    
+    if (eglQueryVersion (display, &major, &minor)) {
+      screen_info->egl_version = major + minor / 10.0f;
+      if (major > 1 || (major > 0 || minor >= 2)) {
+        glitz_egl_query_extensions (screen_info, screen_info->egl_version);
+        _glitz_egl_proc_address_lookup (screen_info);
+        glitz_egl_query_formats (screen_info);
+      }
+    }
+  }
+#endif
+  glitz_egl_query_extensions (screen_info, screen_info->egl_version);
+  glitz_egl_query_configs (screen_info);
+        
+  screen_info->context_stack_size = 1;
+  screen_info->context_stack->drawable = NULL;
+  screen_info->context_stack->surface = NULL;
+  screen_info->context_stack->constraint = GLITZ_NONE;
+  
+  return screen_info;
+}
+
+static void
+_glitz_egl_screen_destroy (glitz_egl_screen_info_t *screen_info)
+{
+  EGLDisplay egl_display = screen_info->display_info->egl_display;
+  int     i;
+
+  if (screen_info->egl_root_context)
+    eglMakeCurrent (egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+  
+  for (i = 0; i < screen_info->n_contexts; i++)
+    glitz_egl_context_destroy (screen_info, screen_info->contexts[i]);
+
+  free (screen_info->contexts);
+  free (screen_info->formats);
+  free (screen_info->egl_config_ids);
+  free (screen_info);
+}
+
+void
+glitz_egl_init (const char *gl_library)
+{
+  _glitz_egl_thread_info_get (gl_library);
+}
+slim_hidden_def(glitz_egl_init);
+
+void
+glitz_egl_fini (void)
+{
+  glitz_egl_thread_info_t *info = _glitz_egl_thread_info_get (NULL);
+
+  _glitz_egl_thread_info_destroy (info);
+}
+slim_hidden_def(glitz_egl_fini);
diff --git a/src/egl/glitz_egl_pbuffer.c b/src/egl/glitz_egl_pbuffer.c
new file mode 100644
index 0000000..cfe147a
--- /dev/null
+++ b/src/egl/glitz_egl_pbuffer.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright © 2004 David Reveman
+ * 
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * David Reveman not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior permission.
+ * David Reveman makes no representations about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ *
+ * DAVID REVEMAN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL DAVID REVEMAN BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, 
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: David Reveman <davidr@novell.com>
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "../config.h"
+#endif
+
+#include "glitz_eglint.h"
+
+EGLSurface
+glitz_egl_pbuffer_create (glitz_egl_screen_info_t *screen_info,
+                          EGLConfig               egl_config,
+                          int                     width,
+                          int                     height)
+{
+  if (egl_config) {
+    int attributes[9];
+
+    attributes[0] = EGL_WIDTH;
+    attributes[1] = width;
+
+    attributes[2] = EGL_HEIGHT;
+    attributes[3] = height;
+#if 0    
+    attributes[4] = EGL_LARGEST_PBUFFER;
+    attributes[5] = 0;
+
+    attributes[6] = EGL_PRESERVED_CONTENTS;
+    attributes[7] = 1;
+    attributes[8] = 0;
+#endif
+    return
+        eglCreatePbufferSurface(screen_info->display_info->egl_display,
+                                         egl_config, attributes);
+  } else
+    return (EGLSurface) 0;
+}
+
+void 
+glitz_egl_pbuffer_destroy (glitz_egl_screen_info_t *screen_info,
+                           EGLSurface              egl_pbuffer)
+{
+  eglDestroySurface(screen_info->display_info->egl_display,
+                                    egl_pbuffer);
+}
diff --git a/src/egl/glitz_egl_surface.c b/src/egl/glitz_egl_surface.c
new file mode 100644
index 0000000..4afdd7a
--- /dev/null
+++ b/src/egl/glitz_egl_surface.c
@@ -0,0 +1,203 @@
+/*
+ * Copyright © 2004 David Reveman
+ * 
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * David Reveman not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior permission.
+ * David Reveman makes no representations about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ *
+ * DAVID REVEMAN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL DAVID REVEMAN BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, 
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: David Reveman <davidr@novell.com>
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "../config.h"
+#endif
+
+#include "glitz_eglint.h"
+
+static glitz_egl_surface_t *
+_glitz_egl_create_surface (glitz_egl_screen_info_t *screen_info,
+                           glitz_egl_context_t     *context,
+                           glitz_drawable_format_t *format,
+                           EGLSurface              egl_surface,
+                           int                     width,
+                           int                     height)
+{
+  glitz_egl_surface_t *surface;
+  
+  if (width <= 0 || height <= 0)
+    return NULL;
+
+  surface = (glitz_egl_surface_t *) malloc (sizeof (glitz_egl_surface_t));
+  if (surface == NULL)
+    return NULL;
+
+  surface->base.ref_count = 1;
+  surface->screen_info = screen_info;
+  surface->context = context;
+  surface->egl_surface = egl_surface;
+  surface->base.format = format;
+  surface->base.backend = &context->backend;
+
+  glitz_drawable_update_size (&surface->base, width, height);
+
+  if (!context->initialized) {
+    glitz_egl_push_current (surface, NULL, GLITZ_CONTEXT_CURRENT);
+    glitz_egl_pop_current (surface);
+  }
+  
+  if (width > context->max_viewport_dims[0] ||
+      height > context->max_viewport_dims[1]) {
+    free (surface);
+    return NULL;
+  }
+  
+  screen_info->drawables++;
+  
+  return surface;
+}
+
+static glitz_drawable_t *
+_glitz_egl_create_pbuffer_surface (glitz_egl_screen_info_t *screen_info,
+                                    glitz_drawable_format_t *format,
+                                    unsigned int            width,
+                                    unsigned int            height)
+{
+  glitz_egl_surface_t *surface;
+  glitz_egl_context_t *context;
+  EGLSurface egl_pbuffer;
+
+  if (!format->types.pbuffer)
+    return NULL;
+  
+  context = glitz_egl_context_get (screen_info, format);
+  if (!context)
+    return NULL;
+
+  egl_pbuffer = glitz_egl_pbuffer_create (screen_info, context->egl_config,
+                                      (int) width, (int) height);
+  if (!egl_pbuffer)
+    return NULL;
+  
+  surface = _glitz_egl_create_surface (screen_info, context, format,
+                                         egl_pbuffer,
+                                         width, height);
+  if (!surface) {
+    glitz_egl_pbuffer_destroy (screen_info, egl_pbuffer);
+    return NULL;
+  }
+  
+  return &surface->base;
+}
+
+glitz_drawable_t *
+glitz_egl_create_pbuffer (void                    *abstract_templ,
+                          glitz_drawable_format_t *format,
+                          unsigned int            width,
+                          unsigned int            height)
+{
+  glitz_egl_surface_t *templ = (glitz_egl_surface_t *) abstract_templ;
+
+  return _glitz_egl_create_pbuffer_surface (templ->screen_info, format,
+                                             width, height);
+}
+
+glitz_drawable_t *
+glitz_egl_create_window_surface (EGLDisplay              display,
+                                      EGLScreenMESA           screen,
+                                      glitz_drawable_format_t *format,
+                                      NativeWindowType        window,
+                                      unsigned int            width,
+                                      unsigned int            height)
+{
+  glitz_egl_surface_t *surface;
+  glitz_egl_screen_info_t *screen_info;
+  glitz_egl_context_t *context;
+
+  screen_info = glitz_egl_screen_info_get (display, screen);
+  if (!screen_info)
+    return NULL;
+  
+  context = glitz_egl_context_get (screen_info, format);
+  if (!context)
+    return NULL;
+  
+  surface = _glitz_egl_create_surface (screen_info, context, format,
+                                         window,
+                                         width, height);
+  if (!surface)
+    return NULL;
+
+  return &surface->base;
+}
+slim_hidden_def(glitz_egl_create_window_surface);
+
+glitz_drawable_t *
+glitz_egl_create_pbuffer_surface (EGLDisplay              display,
+                                   EGLScreenMESA           screen,
+                                   glitz_drawable_format_t *format,
+                                   unsigned int            width,
+                                   unsigned int            height)
+{
+  glitz_egl_screen_info_t *screen_info;
+
+  screen_info = glitz_egl_screen_info_get (display, screen);
+  if (!screen_info)
+    return NULL;
+
+  return _glitz_egl_create_pbuffer_surface (screen_info, format,
+                                             width, height);
+}
+slim_hidden_def(glitz_egl_create_pbuffer_surface);
+
+void
+glitz_egl_destroy (void *abstract_drawable)
+{
+  EGLint value;
+  glitz_egl_surface_t *surface = (glitz_egl_surface_t *) abstract_drawable;
+
+  surface->screen_info->drawables--;
+  if (surface->screen_info->drawables == 0) {
+    /*
+     * Last drawable? We have to destroy all fragment programs as this may
+     * be our last chance to have a context current.
+     */
+    glitz_egl_push_current (abstract_drawable, NULL, GLITZ_CONTEXT_CURRENT);
+    glitz_program_map_fini (&surface->base.backend->gl,
+                            &surface->screen_info->program_map);
+    glitz_egl_pop_current (abstract_drawable);
+  }
+
+  if (eglGetCurrentSurface ( 0 ) == surface->egl_surface)
+    eglMakeCurrent (surface->screen_info->display_info->egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+  
+  eglQuerySurface (surface->screen_info->display_info->egl_display, surface->egl_surface, 
+                    EGL_SURFACE_TYPE, &value);
+  if (value == EGL_PBUFFER_BIT)
+    glitz_egl_pbuffer_destroy (surface->screen_info, surface->egl_surface);
+  
+  free (surface);
+}
+
+void
+glitz_egl_swap_buffers (void *abstract_drawable)
+{
+  glitz_egl_surface_t *surface = (glitz_egl_surface_t *) abstract_drawable;
+
+  eglSwapBuffers (surface->screen_info->display_info->egl_display,
+                  surface->egl_surface);
+}
diff --git a/src/egl/glitz_eglext.h b/src/egl/glitz_eglext.h
new file mode 100644
index 0000000..49c2721
--- /dev/null
+++ b/src/egl/glitz_eglext.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright © 2004 David Reveman, Peter Nilsson
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the names of
+ * David Reveman and Peter Nilsson not be used in advertising or
+ * publicity pertaining to distribution of the software without
+ * specific, written prior permission. David Reveman and Peter Nilsson
+ * makes no representations about the suitability of this software for
+ * any purpose. It is provided "as is" without express or implied warranty.
+ *
+ * DAVID REVEMAN AND PETER NILSSON DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL DAVID REVEMAN AND
+ * PETER NILSSON BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA
+ * OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Authors: David Reveman <davidr@novell.com>
+ *          Peter Nilsson <c99pnn@cs.umu.se>
+ */
+
+#ifndef GLITZ_EGLEXT_H_INCLUDED
+#define GLITZ_EGLEXT_H_INCLUDED
+
+
+typedef glitz_function_pointer_t (* glitz_egl_get_proc_address_t)
+     (const glitz_gl_ubyte_t *);
+typedef EGLConfig *(* glitz_egl_get_configs_t)
+     (EGLDisplay egl_display, EGLScreenMESA egl_screen, int *n_elements);
+typedef int (* glitz_egl_get_config_attrib_t)
+     (EGLDisplay egl_display, EGLConfig egl_config, int attribute, int *value);
+typedef EGLSurface (* glitz_egl_create_pbuffer_t)
+     (EGLDisplay egl_display, EGLConfig egl_config, const int *attrib_list);
+typedef void (* glitz_egl_destroy_pbuffer_t)
+     (EGLDisplay egl_display, EGLSurface egl_pbuffer);
+typedef void (* glitz_egl_query_drawable_t)
+     (EGLDisplay egl_display, EGLSurface egl_surface,
+      int attribute, unsigned int *value);
+typedef EGLBoolean (* glitz_egl_make_context_current_t)
+     (EGLDisplay egl_display, EGLSurface egl_draw, EGLSurface egl_read, EGLContext egl_ctx);
+typedef EGLContext (* glitz_egl_create_new_context_t)
+     (EGLDisplay egl_display, EGLConfig egl_config, int render_type,
+      EGLContext egl_share_list, EGLBoolean direct);
+
+typedef EGLBoolean *(* glitz_egl_bind_tex_image_t)
+     (EGLDisplay egl_display, EGLSurface egl_pbuffer, int buffer);
+typedef EGLBoolean (* glitz_egl_release_tex_image_t)
+     (EGLDisplay egl_display, EGLSurface egl_pbuffer, int buffer);
+
+#endif /* GLITZ_EGLEXT_H_INCLUDED */
diff --git a/src/egl/glitz_eglint.h b/src/egl/glitz_eglint.h
new file mode 100644
index 0000000..7a61488
--- /dev/null
+++ b/src/egl/glitz_eglint.h
@@ -0,0 +1,171 @@
+/*
+ * Copyright © 2004 David Reveman
+ * 
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * David Reveman not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior permission.
+ * David Reveman makes no representations about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ *
+ * DAVID REVEMAN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL DAVID REVEMAN BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, 
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: David Reveman <davidr@novell.com>
+ */
+
+#ifndef GLITZ_EGLINT_H_INCLUDED
+#define GLITZ_EGLINT_H_INCLUDED
+
+#include "glitz.h"
+#include "glitzint.h"
+
+#include "glitz-egl.h"
+
+#include "glitz_eglext.h"
+
+#define GLITZ_EGL_FEATURE_MAKE_CURRENT_READ_MASK   (1L << 2)
+#define GLITZ_EGL_FEATURE_GET_PROC_ADDRESS_MASK    (1L << 3)
+#define GLITZ_EGL_FEATURE_MULTISAMPLE_MASK         (1L << 4)
+#define GLITZ_EGL_FEATURE_PBUFFER_MULTISAMPLE_MASK (1L << 5)
+
+typedef struct _glitz_egl_surface glitz_egl_surface_t;
+typedef struct _glitz_egl_screen_info_t glitz_egl_screen_info_t;
+typedef struct _glitz_egl_display_info_t glitz_egl_display_info_t;
+
+typedef struct _glitz_egl_thread_info_t {
+  glitz_egl_display_info_t **displays;
+  int                      n_displays;
+  char                     *gl_library;
+  void                     *dlhand;
+  glitz_context_t          *cctx;
+} glitz_egl_thread_info_t;
+
+struct _glitz_egl_display_info_t {
+  glitz_egl_thread_info_t *thread_info;
+  EGLDisplay              egl_display;
+  glitz_egl_screen_info_t **screens;
+  int n_screens;
+};
+
+typedef struct _glitz_egl_context_info_t {
+  glitz_egl_surface_t  *drawable;
+  glitz_surface_t      *surface;
+  glitz_constraint_t   constraint;
+} glitz_egl_context_info_t;
+
+typedef struct _glitz_egl_context_t {
+  glitz_context_t   base;
+  EGLContext        egl_context;
+  glitz_format_id_t id;
+  EGLConfig         egl_config;
+  glitz_backend_t   backend;
+  glitz_gl_int_t    max_viewport_dims[2];
+  glitz_gl_int_t    max_texture_2d_size;
+  glitz_gl_int_t    max_texture_rect_size;
+  glitz_bool_t      initialized;
+} glitz_egl_context_t;
+
+struct _glitz_egl_screen_info_t {
+  glitz_egl_display_info_t             *display_info;
+  int                                  screen;
+  int                                  drawables;
+  glitz_drawable_format_t              *formats;
+  EGLConfig                            *egl_config_ids;
+  int                                  n_formats;  
+  glitz_egl_context_t                  **contexts;
+  int                                  n_contexts;
+  glitz_egl_context_info_t             context_stack[GLITZ_CONTEXT_STACK_SIZE];
+  int                                  context_stack_size;
+  EGLContext                           egl_root_context;
+  unsigned long                        egl_feature_mask;
+  glitz_gl_float_t                     egl_version;
+  glitz_program_map_t                  program_map;
+};
+
+struct _glitz_egl_surface {
+  glitz_drawable_t        base;
+  
+  glitz_egl_screen_info_t *screen_info;
+  glitz_egl_context_t     *context;
+  EGLSurface              egl_surface;
+};
+
+extern void __internal_linkage
+glitz_egl_query_extensions (glitz_egl_screen_info_t *screen_info,
+                            glitz_gl_float_t        egl_version);
+
+extern glitz_egl_screen_info_t __internal_linkage *
+glitz_egl_screen_info_get (EGLDisplay egl_display,
+                           EGLScreenMESA  egl_screen);
+
+extern glitz_function_pointer_t __internal_linkage
+glitz_egl_get_proc_address (const char *name,
+                            void       *closure);
+
+extern glitz_egl_context_t __internal_linkage *
+glitz_egl_context_get (glitz_egl_screen_info_t *screen_info,
+                       glitz_drawable_format_t *format);
+
+extern void __internal_linkage
+glitz_egl_context_destroy (glitz_egl_screen_info_t *screen_info,
+                           glitz_egl_context_t     *context);
+
+extern void __internal_linkage
+glitz_egl_query_configs (glitz_egl_screen_info_t *screen_info);
+
+extern EGLSurface __internal_linkage
+glitz_egl_pbuffer_create (glitz_egl_screen_info_t    *screen_info,
+                          EGLConfig                  egl_config,
+                          int                        width,
+                          int                        height);
+
+extern void __internal_linkage
+glitz_egl_pbuffer_destroy (glitz_egl_screen_info_t *screen_info,
+                           EGLSurface              egl_pbuffer);
+
+extern glitz_drawable_t __internal_linkage *
+glitz_egl_create_pbuffer (void                    *abstract_templ,
+                          glitz_drawable_format_t *format,
+                          unsigned int            width,
+                          unsigned int            height);
+
+extern void __internal_linkage
+glitz_egl_push_current (void               *abstract_drawable,
+                        glitz_surface_t    *surface,
+                        glitz_constraint_t constraint);
+
+extern glitz_surface_t __internal_linkage *
+glitz_egl_pop_current (void *abstract_drawable);
+
+void
+glitz_egl_make_current (void               *abstract_drawable,
+                        glitz_constraint_t constraint);
+
+extern glitz_status_t __internal_linkage
+glitz_egl_make_current_read (void *abstract_surface);
+
+extern void __internal_linkage
+glitz_egl_destroy (void *abstract_drawable);
+
+extern void __internal_linkage
+glitz_egl_swap_buffers (void *abstract_drawable);
+
+/* Avoid unnecessary PLT entries.  */
+
+slim_hidden_proto(glitz_egl_init)
+slim_hidden_proto(glitz_egl_fini)
+slim_hidden_proto(glitz_egl_find_config)
+slim_hidden_proto(glitz_egl_create_window_surface)
+slim_hidden_proto(glitz_egl_create_pbuffer_surface)
+
+#endif /* GLITZ_EGLINT_H_INCLUDED */