auto import from //depot/cupcake/@135843

1 files changed, 1543 insertions, 0 deletions

diff --git a/opengl/libagl/egl.cpp b/opengl/libagl/egl.cpp
new file mode 100644
index 00000000000..5b90bf03fd6
--- /dev/null
+++ b/opengl/libagl/egl.cpp
@@ -0,0 +1,1543 @@
+/* 
+**
+** Copyright 2007 The Android Open Source Project
+**
+** Licensed under the Apache License Version 2.0(the "License"); 
+** you may not use this file except in compliance with the License. 
+** You may obtain a copy of the License at 
+**
+**     http://www.apache.org/licenses/LICENSE-2.0 
+**
+** Unless required by applicable law or agreed to in writing software 
+** distributed under the License is distributed on an "AS IS" BASIS 
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND either express or implied. 
+** See the License for the specific language governing permissions and 
+** limitations under the License.
+*/
+
+#define LOG_TAG "EGL"
+
+#include <assert.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+
+#include <cutils/log.h>
+#include <cutils/atomic.h>
+
+#include <utils/threads.h>
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <GLES/gl.h>
+#include <GLES/glext.h>
+
+#include <pixelflinger/format.h>
+#include <pixelflinger/pixelflinger.h>
+
+#include "context.h"
+#include "state.h"
+#include "texture.h"
+#include "matrix.h"
+
+#undef NELEM
+#define NELEM(x) (sizeof(x)/sizeof(*(x)))
+
+// ----------------------------------------------------------------------------
+namespace android {
+// ----------------------------------------------------------------------------
+
+const unsigned int NUM_DISPLAYS = 1;
+
+static pthread_mutex_t gInitMutex = PTHREAD_MUTEX_INITIALIZER;
+static pthread_mutex_t gErrorKeyMutex = PTHREAD_MUTEX_INITIALIZER;
+static pthread_key_t gEGLErrorKey = -1;
+#ifndef HAVE_ANDROID_OS
+namespace gl {
+pthread_key_t gGLKey = -1;
+}; // namespace gl
+#endif
+
+template<typename T>
+static T setError(GLint error, T returnValue) {
+    if (ggl_unlikely(gEGLErrorKey == -1)) {
+        pthread_mutex_lock(&gErrorKeyMutex);
+        if (gEGLErrorKey == -1)
+            pthread_key_create(&gEGLErrorKey, NULL);
+        pthread_mutex_unlock(&gErrorKeyMutex);
+    }
+    pthread_setspecific(gEGLErrorKey, (void*)error);
+    return returnValue;
+}
+
+static GLint getError() {
+    if (ggl_unlikely(gEGLErrorKey == -1))
+        return EGL_SUCCESS;
+    GLint error = (GLint)pthread_getspecific(gEGLErrorKey);
+    pthread_setspecific(gEGLErrorKey, (void*)EGL_SUCCESS);
+    return error;
+}
+
+// ----------------------------------------------------------------------------
+
+struct egl_display_t
+{
+    egl_display_t() : type(0), initialized(0) { }
+    
+    static egl_display_t& get_display(EGLDisplay dpy);
+    
+    static EGLBoolean is_valid(EGLDisplay dpy) {
+        return ((uintptr_t(dpy)-1U) >= NUM_DISPLAYS) ? EGL_FALSE : EGL_TRUE;
+    }
+
+    NativeDisplayType   type;
+    volatile int32_t    initialized;
+};
+
+static egl_display_t gDisplays[NUM_DISPLAYS];
+
+egl_display_t& egl_display_t::get_display(EGLDisplay dpy) {
+    return gDisplays[uintptr_t(dpy)-1U];
+}
+
+struct egl_context_t {
+    enum {
+        IS_CURRENT      =   0x00010000,
+        NEVER_CURRENT   =   0x00020000
+    };
+    uint32_t            flags;
+    EGLDisplay          dpy;
+    EGLConfig           config;
+    EGLSurface          read;
+    EGLSurface          draw;
+
+    static inline egl_context_t* context(EGLContext ctx) {
+        ogles_context_t* const gl = static_cast<ogles_context_t*>(ctx);
+        return static_cast<egl_context_t*>(gl->rasterizer.base);
+    }
+};
+
+// ----------------------------------------------------------------------------
+
+struct egl_surface_t
+{
+    enum {
+        PAGE_FLIP = 0x00000001,
+        MAGIC     = 0x31415265
+    };
+
+    uint32_t            magic;
+    EGLDisplay          dpy;
+    EGLConfig           config;
+    EGLContext          ctx;
+
+                egl_surface_t(EGLDisplay dpy, EGLConfig config, int32_t depthFormat);
+    virtual     ~egl_surface_t();
+    virtual     bool    isValid() const = 0;
+    
+    virtual     EGLBoolean  bindDrawSurface(ogles_context_t* gl) = 0;
+    virtual     EGLBoolean  bindReadSurface(ogles_context_t* gl) = 0;
+    virtual     EGLint      getWidth() const = 0;
+    virtual     EGLint      getHeight() const = 0;
+    virtual     void*       getBits() const = 0;
+
+    virtual     EGLint      getHorizontalResolution() const;
+    virtual     EGLint      getVerticalResolution() const;
+    virtual     EGLint      getRefreshRate() const;
+    virtual     EGLint      getSwapBehavior() const;
+    virtual     EGLBoolean  swapBuffers();
+protected:
+    GGLSurface              depth;
+};
+
+egl_surface_t::egl_surface_t(EGLDisplay dpy,
+        EGLConfig config,
+        int32_t depthFormat)
+    : magic(MAGIC), dpy(dpy), config(config), ctx(0)
+{
+    depth.version = sizeof(GGLSurface);
+    depth.data = 0;
+    depth.format = depthFormat;
+}
+egl_surface_t::~egl_surface_t()
+{
+    magic = 0;
+    free(depth.data);
+}
+EGLBoolean egl_surface_t::swapBuffers() {
+    return EGL_FALSE;
+}
+EGLint egl_surface_t::getHorizontalResolution() const {
+    return (0 * EGL_DISPLAY_SCALING) * (1.0f / 25.4f);
+}
+EGLint egl_surface_t::getVerticalResolution() const {
+    return (0 * EGL_DISPLAY_SCALING) * (1.0f / 25.4f);
+}
+EGLint egl_surface_t::getRefreshRate() const {
+    return (60 * EGL_DISPLAY_SCALING);
+}
+EGLint egl_surface_t::getSwapBehavior() const {
+    return EGL_BUFFER_PRESERVED;
+}
+
+// ----------------------------------------------------------------------------
+
+struct egl_window_surface_t : public egl_surface_t
+{
+    egl_window_surface_t(
+            EGLDisplay dpy, EGLConfig config,
+            int32_t depthFormat,
+            egl_native_window_t* window);
+
+     ~egl_window_surface_t();
+
+    virtual     bool        isValid() const { return nativeWindow->magic == 0x600913; }    
+    virtual     EGLBoolean  swapBuffers();
+    virtual     EGLBoolean  bindDrawSurface(ogles_context_t* gl);
+    virtual     EGLBoolean  bindReadSurface(ogles_context_t* gl);
+    virtual     EGLint      getWidth() const    { return nativeWindow->width;  }
+    virtual     EGLint      getHeight() const   { return nativeWindow->height; }
+    virtual     void*       getBits() const;
+    virtual     EGLint      getHorizontalResolution() const;
+    virtual     EGLint      getVerticalResolution() const;
+    virtual     EGLint      getRefreshRate() const;
+    virtual     EGLint      getSwapBehavior() const;
+private:
+    egl_native_window_t*    nativeWindow;
+};
+
+egl_window_surface_t::egl_window_surface_t(EGLDisplay dpy,
+        EGLConfig config,
+        int32_t depthFormat,
+        egl_native_window_t* window)
+    : egl_surface_t(dpy, config, depthFormat), nativeWindow(window)
+{
+    if (depthFormat) {
+        depth.width   = window->width;
+        depth.height  = window->height;
+        depth.stride  = depth.width; // use the width here
+        depth.data    = (GGLubyte*)malloc(depth.stride*depth.height*2);
+        if (depth.data == 0) {
+            setError(EGL_BAD_ALLOC, EGL_NO_SURFACE);
+            return;
+        }
+    }
+    nativeWindow->incRef(nativeWindow);
+}
+egl_window_surface_t::~egl_window_surface_t() {
+    nativeWindow->decRef(nativeWindow);
+}
+
+EGLBoolean egl_window_surface_t::swapBuffers()
+{
+    uint32_t flags = nativeWindow->swapBuffers(nativeWindow);
+    if (flags & EGL_NATIVES_FLAG_SIZE_CHANGED) {
+        // TODO: we probably should reset the swap rect here
+        // if the window size has changed
+        if (depth.data) {
+            free(depth.data);
+            depth.width   = nativeWindow->width;
+            depth.height  = nativeWindow->height;
+            depth.stride  = nativeWindow->stride;
+            depth.data    = (GGLubyte*)malloc(depth.stride*depth.height*2);
+            if (depth.data == 0) {
+                setError(EGL_BAD_ALLOC, EGL_NO_SURFACE);
+                return EGL_FALSE;
+            }
+        }
+    }
+    return EGL_TRUE;
+}
+
+EGLBoolean egl_window_surface_t::bindDrawSurface(ogles_context_t* gl)
+{
+    GGLSurface buffer;
+    buffer.version = sizeof(GGLSurface);
+    buffer.width   = nativeWindow->width;
+    buffer.height  = nativeWindow->height;
+    buffer.stride  = nativeWindow->stride;
+    buffer.data    = (GGLubyte*)nativeWindow->base + nativeWindow->offset;
+    buffer.format  = nativeWindow->format;
+    gl->rasterizer.procs.colorBuffer(gl, &buffer);
+    if (depth.data != gl->rasterizer.state.buffers.depth.data)
+        gl->rasterizer.procs.depthBuffer(gl, &depth);
+    return EGL_TRUE;
+}
+EGLBoolean egl_window_surface_t::bindReadSurface(ogles_context_t* gl)
+{
+    GGLSurface buffer;
+    buffer.version = sizeof(GGLSurface);
+    buffer.width   = nativeWindow->width;
+    buffer.height  = nativeWindow->height;
+    buffer.stride  = nativeWindow->stride;
+    buffer.data    = (GGLubyte*)nativeWindow->base + nativeWindow->offset;
+    buffer.format  = nativeWindow->format;
+    gl->rasterizer.procs.readBuffer(gl, &buffer);
+    return EGL_TRUE;
+}
+void* egl_window_surface_t::getBits() const {
+    return (GGLubyte*)nativeWindow->base + nativeWindow->offset;
+}
+EGLint egl_window_surface_t::getHorizontalResolution() const {
+    return (nativeWindow->xdpi * EGL_DISPLAY_SCALING) * (1.0f / 25.4f);
+}
+EGLint egl_window_surface_t::getVerticalResolution() const {
+    return (nativeWindow->ydpi * EGL_DISPLAY_SCALING) * (1.0f / 25.4f);
+}
+EGLint egl_window_surface_t::getRefreshRate() const {
+    return (nativeWindow->fps * EGL_DISPLAY_SCALING);
+}
+EGLint egl_window_surface_t::getSwapBehavior() const {
+    uint32_t flags = nativeWindow->flags;
+    if (flags & EGL_NATIVES_FLAG_DESTROY_BACKBUFFER)
+        return EGL_BUFFER_DESTROYED;
+    return EGL_BUFFER_PRESERVED;
+}
+
+// ----------------------------------------------------------------------------
+
+struct egl_pixmap_surface_t : public egl_surface_t
+{
+    egl_pixmap_surface_t(
+            EGLDisplay dpy, EGLConfig config,
+            int32_t depthFormat,
+            egl_native_pixmap_t const * pixmap);
+
+    virtual ~egl_pixmap_surface_t() { }
+
+    virtual     bool        isValid() const { return nativePixmap.version == sizeof(egl_native_pixmap_t); }    
+    virtual     EGLBoolean  bindDrawSurface(ogles_context_t* gl);
+    virtual     EGLBoolean  bindReadSurface(ogles_context_t* gl);
+    virtual     EGLint      getWidth() const    { return nativePixmap.width;  }
+    virtual     EGLint      getHeight() const   { return nativePixmap.height; }
+    virtual     void*       getBits() const     { return nativePixmap.data; }
+private:
+    egl_native_pixmap_t     nativePixmap;
+};
+
+egl_pixmap_surface_t::egl_pixmap_surface_t(EGLDisplay dpy,
+        EGLConfig config,
+        int32_t depthFormat,
+        egl_native_pixmap_t const * pixmap)
+    : egl_surface_t(dpy, config, depthFormat), nativePixmap(*pixmap)
+{
+    if (depthFormat) {
+        depth.width   = pixmap->width;
+        depth.height  = pixmap->height;
+        depth.stride  = depth.width; // use the width here
+        depth.data    = (GGLubyte*)malloc(depth.stride*depth.height*2);
+        if (depth.data == 0) {
+            setError(EGL_BAD_ALLOC, EGL_NO_SURFACE);
+            return;
+        }
+    }
+}
+EGLBoolean egl_pixmap_surface_t::bindDrawSurface(ogles_context_t* gl)
+{
+    GGLSurface buffer;
+    buffer.version = sizeof(GGLSurface);
+    buffer.width   = nativePixmap.width;
+    buffer.height  = nativePixmap.height;
+    buffer.stride  = nativePixmap.stride;
+    buffer.data    = nativePixmap.data;
+    buffer.format  = nativePixmap.format;
+    
+    gl->rasterizer.procs.colorBuffer(gl, &buffer);
+    if (depth.data != gl->rasterizer.state.buffers.depth.data)
+        gl->rasterizer.procs.depthBuffer(gl, &depth);
+    return EGL_TRUE;
+}
+EGLBoolean egl_pixmap_surface_t::bindReadSurface(ogles_context_t* gl)
+{
+    GGLSurface buffer;
+    buffer.version = sizeof(GGLSurface);
+    buffer.width   = nativePixmap.width;
+    buffer.height  = nativePixmap.height;
+    buffer.stride  = nativePixmap.stride;
+    buffer.data    = nativePixmap.data;
+    buffer.format  = nativePixmap.format;
+    gl->rasterizer.procs.readBuffer(gl, &buffer);
+    return EGL_TRUE;
+}
+
+// ----------------------------------------------------------------------------
+
+struct egl_pbuffer_surface_t : public egl_surface_t
+{
+    egl_pbuffer_surface_t(
+            EGLDisplay dpy, EGLConfig config, int32_t depthFormat,
+            int32_t w, int32_t h, int32_t f);
+
+    virtual ~egl_pbuffer_surface_t();
+
+    virtual     bool        isValid() const { return pbuffer.data != 0; }    
+    virtual     EGLBoolean  bindDrawSurface(ogles_context_t* gl);
+    virtual     EGLBoolean  bindReadSurface(ogles_context_t* gl);
+    virtual     EGLint      getWidth() const    { return pbuffer.width;  }
+    virtual     EGLint      getHeight() const   { return pbuffer.height; }
+    virtual     void*       getBits() const     { return pbuffer.data; }
+private:
+    GGLSurface  pbuffer;
+};
+
+egl_pbuffer_surface_t::egl_pbuffer_surface_t(EGLDisplay dpy,
+        EGLConfig config, int32_t depthFormat,
+        int32_t w, int32_t h, int32_t f)
+    : egl_surface_t(dpy, config, depthFormat)
+{
+    size_t size = w*h;
+    switch (f) {
+        case GGL_PIXEL_FORMAT_A_8:          size *= 1; break;
+        case GGL_PIXEL_FORMAT_RGB_565:      size *= 2; break;
+        case GGL_PIXEL_FORMAT_RGBA_8888:    size *= 4; break;
+        default:
+            LOGE("incompatible pixel format for pbuffer (format=%d)", f);
+            pbuffer.data = 0;
+            break;
+    }
+    pbuffer.version = sizeof(GGLSurface);
+    pbuffer.width   = w;
+    pbuffer.height  = h;
+    pbuffer.stride  = w;
+    pbuffer.data    = (GGLubyte*)malloc(size);
+    pbuffer.format  = f;
+    
+    if (depthFormat) {
+        depth.width   = pbuffer.width;
+        depth.height  = pbuffer.height;
+        depth.stride  = depth.width; // use the width here
+        depth.data    = (GGLubyte*)malloc(depth.stride*depth.height*2);
+        if (depth.data == 0) {
+            setError(EGL_BAD_ALLOC, EGL_NO_SURFACE);
+            return;
+        }
+    }
+}
+egl_pbuffer_surface_t::~egl_pbuffer_surface_t() {
+    free(pbuffer.data);
+}
+EGLBoolean egl_pbuffer_surface_t::bindDrawSurface(ogles_context_t* gl)
+{
+    gl->rasterizer.procs.colorBuffer(gl, &pbuffer);
+    if (depth.data != gl->rasterizer.state.buffers.depth.data)
+        gl->rasterizer.procs.depthBuffer(gl, &depth);
+    return EGL_TRUE;
+}
+EGLBoolean egl_pbuffer_surface_t::bindReadSurface(ogles_context_t* gl)
+{
+    gl->rasterizer.procs.readBuffer(gl, &pbuffer);
+    return EGL_TRUE;
+}
+
+// ----------------------------------------------------------------------------
+
+struct config_pair_t {
+    GLint key;
+    GLint value;
+};
+
+struct configs_t {
+    const config_pair_t* array;
+    int                  size;
+};
+
+struct config_management_t {
+    GLint key;
+    bool (*match)(GLint reqValue, GLint confValue);
+    static bool atLeast(GLint reqValue, GLint confValue) {
+        return (reqValue == EGL_DONT_CARE) || (confValue >= reqValue);
+    }
+    static bool exact(GLint reqValue, GLint confValue) {
+        return (reqValue == EGL_DONT_CARE) || (confValue == reqValue);
+    }
+    static bool mask(GLint reqValue, GLint confValue) {
+        return (confValue & reqValue) == reqValue;
+    }
+};
+
+// ----------------------------------------------------------------------------
+
+#define VERSION_MAJOR 1
+#define VERSION_MINOR 2
+static char const * const gVendorString     = "Google Inc.";
+static char const * const gVersionString    = "1.2 Android Driver";
+static char const * const gClientApiString  = "OpenGL ES";
+static char const * const gExtensionsString = "";
+
+// ----------------------------------------------------------------------------
+
+struct extention_map_t {
+    const char * const name;
+    __eglMustCastToProperFunctionPointerType address;
+};
+
+static const extention_map_t gExtentionMap[] = {
+    { "glDrawTexsOES",              (void(*)())&glDrawTexsOES },
+    { "glDrawTexiOES",              (void(*)())&glDrawTexiOES },
+    { "glDrawTexfOES",              (void(*)())&glDrawTexfOES },
+    { "glDrawTexxOES",              (void(*)())&glDrawTexxOES },
+    { "glDrawTexsvOES",             (void(*)())&glDrawTexsvOES },
+    { "glDrawTexivOES",             (void(*)())&glDrawTexivOES },
+    { "glDrawTexfvOES",             (void(*)())&glDrawTexfvOES },
+    { "glDrawTexxvOES",             (void(*)())&glDrawTexxvOES },
+    { "glQueryMatrixxOES",          (void(*)())&glQueryMatrixxOES },
+    { "glClipPlanef",               (void(*)())&glClipPlanef },
+    { "glClipPlanex",               (void(*)())&glClipPlanex },
+    { "glBindBuffer",               (void(*)())&glBindBuffer },
+    { "glBufferData",               (void(*)())&glBufferData },
+    { "glBufferSubData",            (void(*)())&glBufferSubData },
+    { "glDeleteBuffers",            (void(*)())&glDeleteBuffers },
+    { "glGenBuffers",               (void(*)())&glGenBuffers },
+};
+
+/* 
+ * In the lists below, attributes names MUST be sorted.
+ * Additionally, all configs must be sorted according to
+ * the EGL specification.
+ */
+
+static config_pair_t const config_base_attribute_list[] = {
+        { EGL_STENCIL_SIZE,               0                                 },
+        { EGL_CONFIG_CAVEAT,              EGL_SLOW_CONFIG                   },
+        { EGL_LEVEL,                      0                                 },
+        { EGL_MAX_PBUFFER_HEIGHT,         GGL_MAX_VIEWPORT_DIMS             },
+        { EGL_MAX_PBUFFER_PIXELS,         
+                GGL_MAX_VIEWPORT_DIMS*GGL_MAX_VIEWPORT_DIMS                 },
+        { EGL_MAX_PBUFFER_WIDTH,          GGL_MAX_VIEWPORT_DIMS             },
+        { EGL_NATIVE_RENDERABLE,          EGL_TRUE                          },
+        { EGL_NATIVE_VISUAL_ID,           0                                 },
+        { EGL_NATIVE_VISUAL_TYPE,         GGL_PIXEL_FORMAT_RGB_565          },
+        { EGL_SAMPLES,                    0                                 },
+        { EGL_SAMPLE_BUFFERS,             0                                 },
+        { EGL_TRANSPARENT_TYPE,           EGL_NONE                          },
+        { EGL_TRANSPARENT_BLUE_VALUE,     0                                 },
+        { EGL_TRANSPARENT_GREEN_VALUE,    0                                 },
+        { EGL_TRANSPARENT_RED_VALUE,      0                                 },
+        { EGL_BIND_TO_TEXTURE_RGBA,       EGL_FALSE                         },
+        { EGL_BIND_TO_TEXTURE_RGB,        EGL_FALSE                         },
+        { EGL_MIN_SWAP_INTERVAL,          1                                 },
+        { EGL_MAX_SWAP_INTERVAL,          4                                 },
+};
+
+// These configs can override the base attribute list
+// NOTE: when adding a config here, don't forget to update eglCreate*Surface()
+
+static config_pair_t const config_0_attribute_list[] = {
+        { EGL_BUFFER_SIZE,     16 },
+        { EGL_ALPHA_SIZE,       0 },
+        { EGL_BLUE_SIZE,        5 },
+        { EGL_GREEN_SIZE,       6 },
+        { EGL_RED_SIZE,         5 },
+        { EGL_DEPTH_SIZE,       0 },
+        { EGL_CONFIG_ID,        0 },
+        { EGL_SURFACE_TYPE,     EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT },
+};
+
+static config_pair_t const config_1_attribute_list[] = {
+        { EGL_BUFFER_SIZE,     16 },
+        { EGL_ALPHA_SIZE,       0 },
+        { EGL_BLUE_SIZE,        5 },
+        { EGL_GREEN_SIZE,       6 },
+        { EGL_RED_SIZE,         5 },
+        { EGL_DEPTH_SIZE,      16 },
+        { EGL_CONFIG_ID,        1 },
+        { EGL_SURFACE_TYPE,     EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT },
+};
+
+static config_pair_t const config_2_attribute_list[] = {
+        { EGL_BUFFER_SIZE,     32 },
+        { EGL_ALPHA_SIZE,       8 },
+        { EGL_BLUE_SIZE,        8 },
+        { EGL_GREEN_SIZE,       8 },
+        { EGL_RED_SIZE,         8 },
+        { EGL_DEPTH_SIZE,       0 },
+        { EGL_CONFIG_ID,        2 },
+        { EGL_SURFACE_TYPE,     EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT },
+};
+
+static config_pair_t const config_3_attribute_list[] = {
+        { EGL_BUFFER_SIZE,     32 },
+        { EGL_ALPHA_SIZE,       8 },
+        { EGL_BLUE_SIZE,        8 },
+        { EGL_GREEN_SIZE,       8 },
+        { EGL_RED_SIZE,         8 },
+        { EGL_DEPTH_SIZE,      16 },
+        { EGL_CONFIG_ID,        3 },
+        { EGL_SURFACE_TYPE,     EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT },
+};
+
+static config_pair_t const config_4_attribute_list[] = {
+        { EGL_BUFFER_SIZE,      8 },
+        { EGL_ALPHA_SIZE,       8 },
+        { EGL_BLUE_SIZE,        0 },
+        { EGL_GREEN_SIZE,       0 },
+        { EGL_RED_SIZE,         0 },
+        { EGL_DEPTH_SIZE,       0 },
+        { EGL_CONFIG_ID,        4 },
+        { EGL_SURFACE_TYPE,     EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT },
+};
+
+static config_pair_t const config_5_attribute_list[] = {
+        { EGL_BUFFER_SIZE,      8 },
+        { EGL_ALPHA_SIZE,       8 },
+        { EGL_BLUE_SIZE,        0 },
+        { EGL_GREEN_SIZE,       0 },
+        { EGL_RED_SIZE,         0 },
+        { EGL_DEPTH_SIZE,      16 },
+        { EGL_CONFIG_ID,        5 },
+        { EGL_SURFACE_TYPE,     EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT },
+};
+
+static configs_t const gConfigs[] = {
+        { config_0_attribute_list, NELEM(config_0_attribute_list) },
+        { config_1_attribute_list, NELEM(config_1_attribute_list) },
+        { config_2_attribute_list, NELEM(config_2_attribute_list) },
+        { config_3_attribute_list, NELEM(config_3_attribute_list) },
+        { config_4_attribute_list, NELEM(config_4_attribute_list) },
+        { config_5_attribute_list, NELEM(config_5_attribute_list) },
+};
+
+static config_management_t const gConfigManagement[] = {
+        { EGL_BUFFER_SIZE,                config_management_t::atLeast },
+        { EGL_ALPHA_SIZE,                 config_management_t::atLeast },
+        { EGL_BLUE_SIZE,                  config_management_t::atLeast },
+        { EGL_GREEN_SIZE,                 config_management_t::atLeast },
+        { EGL_RED_SIZE,                   config_management_t::atLeast },
+        { EGL_DEPTH_SIZE,                 config_management_t::atLeast },
+        { EGL_STENCIL_SIZE,               config_management_t::atLeast },
+        { EGL_CONFIG_CAVEAT,              config_management_t::exact   },
+        { EGL_CONFIG_ID,                  config_management_t::exact   },
+        { EGL_LEVEL,                      config_management_t::exact   },
+        { EGL_MAX_PBUFFER_HEIGHT,         config_management_t::exact   },
+        { EGL_MAX_PBUFFER_PIXELS,         config_management_t::exact   },
+        { EGL_MAX_PBUFFER_WIDTH,          config_management_t::exact   },
+        { EGL_NATIVE_RENDERABLE,          config_management_t::exact   },
+        { EGL_NATIVE_VISUAL_ID,           config_management_t::exact   },
+        { EGL_NATIVE_VISUAL_TYPE,         config_management_t::exact   },
+        { EGL_SAMPLES,                    config_management_t::exact   },
+        { EGL_SAMPLE_BUFFERS,             config_management_t::exact   },
+        { EGL_SURFACE_TYPE,               config_management_t::mask    },
+        { EGL_TRANSPARENT_TYPE,           config_management_t::exact   },
+        { EGL_TRANSPARENT_BLUE_VALUE,     config_management_t::exact   },
+        { EGL_TRANSPARENT_GREEN_VALUE,    config_management_t::exact   },
+        { EGL_TRANSPARENT_RED_VALUE,      config_management_t::exact   },
+        { EGL_BIND_TO_TEXTURE_RGBA,       config_management_t::exact   },
+        { EGL_BIND_TO_TEXTURE_RGB,        config_management_t::exact   },
+        { EGL_MIN_SWAP_INTERVAL,          config_management_t::exact   },
+        { EGL_MAX_SWAP_INTERVAL,          config_management_t::exact   },
+};
+
+static config_pair_t const config_defaults[] = {
+        { EGL_SURFACE_TYPE,        EGL_WINDOW_BIT },
+};
+
+// ----------------------------------------------------------------------------
+
+template<typename T>
+static int binarySearch(T const sortedArray[], int first, int last, EGLint key)
+{
+   while (first <= last) {
+       int mid = (first + last) / 2;
+       if (key > sortedArray[mid].key) { 
+           first = mid + 1;
+       } else if (key < sortedArray[mid].key) { 
+           last = mid - 1;
+       } else {
+           return mid;
+       }
+   }
+   return -1;
+}
+
+static int isAttributeMatching(int i, EGLint attr, EGLint val)
+{
+    // look for the attribute in all of our configs
+    config_pair_t const* configFound = gConfigs[i].array; 
+    int index = binarySearch<config_pair_t>(
+            gConfigs[i].array,
+            0, gConfigs[i].size-1,
+            attr);
+    if (index < 0) {
+        configFound = config_base_attribute_list; 
+        index = binarySearch<config_pair_t>(
+                config_base_attribute_list,
+                0, NELEM(config_base_attribute_list)-1,
+                attr);
+    }
+    if (index >= 0) {
+        // attribute found, check if this config could match
+        int cfgMgtIndex = binarySearch<config_management_t>(
+                gConfigManagement,
+                0, NELEM(gConfigManagement)-1,
+                attr);
+        if (index >= 0) {
+            bool match = gConfigManagement[cfgMgtIndex].match(
+                    val, configFound[index].value);
+            if (match) {
+                // this config matches
+                return 1;
+            }
+        } else {
+            // attribute not found. this should NEVER happen.
+        }
+    } else {
+        // error, this attribute doesn't exist
+    }
+    return 0;
+}
+
+static int makeCurrent(ogles_context_t* gl)
+{
+    ogles_context_t* current = (ogles_context_t*)getGlThreadSpecific();
+    if (gl) {
+        egl_context_t* c = egl_context_t::context(gl);
+        if (c->flags & egl_context_t::IS_CURRENT) {
+            if (current != gl) {
+                // it is an error to set a context current, if it's already
+                // current to another thread
+                return -1;
+            }
+        } else {
+            if (current) {
+                // mark the current context as not current, and flush
+                glFlush();
+                egl_context_t::context(current)->flags &= ~egl_context_t::IS_CURRENT;
+            }
+        }
+        if (!(c->flags & egl_context_t::IS_CURRENT)) {
+            // The context is not current, make it current!
+            setGlThreadSpecific(gl);
+            c->flags |= egl_context_t::IS_CURRENT;
+        }
+    } else {
+        if (current) {
+            // mark the current context as not current, and flush
+            glFlush();
+            egl_context_t::context(current)->flags &= ~egl_context_t::IS_CURRENT;
+        }
+        // this thread has no context attached to it
+        setGlThreadSpecific(0);
+    }
+    return 0;
+}
+
+static EGLBoolean getConfigAttrib(EGLDisplay dpy, EGLConfig config,
+        EGLint attribute, EGLint *value)
+{
+    size_t numConfigs =  NELEM(gConfigs);
+    int index = (int)config;
+    if (uint32_t(index) >= numConfigs)
+        return setError(EGL_BAD_CONFIG, EGL_FALSE);
+
+    int attrIndex;
+    attrIndex = binarySearch<config_pair_t>(
+            gConfigs[index].array,
+            0, gConfigs[index].size-1,
+            attribute);
+    if (attrIndex>=0) {
+        *value = gConfigs[index].array[attrIndex].value;
+        return EGL_TRUE;
+    }
+
+    attrIndex = binarySearch<config_pair_t>(
+            config_base_attribute_list,
+            0, NELEM(config_base_attribute_list)-1,
+            attribute);
+    if (attrIndex>=0) {
+        *value = config_base_attribute_list[attrIndex].value;
+        return EGL_TRUE;
+    }
+    return setError(EGL_BAD_ATTRIBUTE, EGL_FALSE);
+}
+
+static EGLSurface createWindowSurface(EGLDisplay dpy, EGLConfig config,
+        NativeWindowType window, const EGLint *attrib_list)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE);
+    if (window == 0)
+        return setError(EGL_BAD_MATCH, EGL_NO_SURFACE);
+
+    EGLint surfaceType;
+    if (getConfigAttrib(dpy, config, EGL_SURFACE_TYPE, &surfaceType) == EGL_FALSE)
+        return EGL_FALSE;
+
+    if (!(surfaceType & EGL_WINDOW_BIT))
+        return setError(EGL_BAD_MATCH, EGL_NO_SURFACE);
+
+    EGLint configID;
+    if (getConfigAttrib(dpy, config, EGL_CONFIG_ID, &configID) == EGL_FALSE)
+        return EGL_FALSE;
+
+    int32_t depthFormat;
+    int32_t pixelFormat;
+    switch(configID) {
+    case 0: 
+        pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 
+        depthFormat = 0;
+        break;
+    case 1:
+        pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 
+        depthFormat = GGL_PIXEL_FORMAT_Z_16;
+        break;
+    case 2:
+        pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 
+        depthFormat = 0;
+        break;
+    case 3:
+        pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 
+        depthFormat = GGL_PIXEL_FORMAT_Z_16;
+        break;
+    case 4:
+        pixelFormat = GGL_PIXEL_FORMAT_A_8; 
+        depthFormat = 0;
+        break;
+    case 5:
+        pixelFormat = GGL_PIXEL_FORMAT_A_8; 
+        depthFormat = GGL_PIXEL_FORMAT_Z_16;
+        break;
+    default:
+        return setError(EGL_BAD_MATCH, EGL_NO_SURFACE);
+    }
+
+    // FIXME: we don't have access to the pixelFormat here just yet.
+    // (it's possible that the surface is not fully initialized)
+    // maybe this should be done after the page-flip
+    //if (EGLint(info.format) != pixelFormat)
+    //    return setError(EGL_BAD_MATCH, EGL_NO_SURFACE);
+
+    egl_surface_t* surface =
+        new egl_window_surface_t(dpy, config, depthFormat,
+                static_cast<egl_native_window_t*>(window));
+
+    if (!surface->isValid()) {
+        // there was a problem in the ctor, the error
+        // flag has been set.
+        delete surface;
+        surface = 0;
+    }
+    return surface;
+}
+
+static EGLSurface createPixmapSurface(EGLDisplay dpy, EGLConfig config,
+        NativePixmapType pixmap, const EGLint *attrib_list)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE);
+    if (pixmap == 0)
+        return setError(EGL_BAD_MATCH, EGL_NO_SURFACE);
+
+    EGLint surfaceType;
+    if (getConfigAttrib(dpy, config, EGL_SURFACE_TYPE, &surfaceType) == EGL_FALSE)
+        return EGL_FALSE;
+
+    if (!(surfaceType & EGL_PIXMAP_BIT))
+        return setError(EGL_BAD_MATCH, EGL_NO_SURFACE);
+
+    EGLint configID;
+    if (getConfigAttrib(dpy, config, EGL_CONFIG_ID, &configID) == EGL_FALSE)
+        return EGL_FALSE;
+
+    int32_t depthFormat;
+    int32_t pixelFormat;
+    switch(configID) {
+    case 0: 
+        pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 
+        depthFormat = 0;
+        break;
+    case 1:
+        pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 
+        depthFormat = GGL_PIXEL_FORMAT_Z_16;
+        break;
+    case 2:
+        pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 
+        depthFormat = 0;
+        break;
+    case 3:
+        pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 
+        depthFormat = GGL_PIXEL_FORMAT_Z_16;
+        break;
+    case 4:
+        pixelFormat = GGL_PIXEL_FORMAT_A_8; 
+        depthFormat = 0;
+        break;
+    case 5:
+        pixelFormat = GGL_PIXEL_FORMAT_A_8; 
+        depthFormat = GGL_PIXEL_FORMAT_Z_16;
+        break;
+    default:
+        return setError(EGL_BAD_MATCH, EGL_NO_SURFACE);
+    }
+
+    if (pixmap->format != pixelFormat)
+        return setError(EGL_BAD_MATCH, EGL_NO_SURFACE);
+
+    egl_surface_t* surface =
+        new egl_pixmap_surface_t(dpy, config, depthFormat,
+                static_cast<egl_native_pixmap_t*>(pixmap));
+
+    if (!surface->isValid()) {
+        // there was a problem in the ctor, the error
+        // flag has been set.
+        delete surface;
+        surface = 0;
+    }
+    return surface;
+}
+
+static EGLSurface createPbufferSurface(EGLDisplay dpy, EGLConfig config,
+        const EGLint *attrib_list)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE);
+
+    EGLint surfaceType;
+    if (getConfigAttrib(dpy, config, EGL_SURFACE_TYPE, &surfaceType) == EGL_FALSE)
+        return EGL_FALSE;
+    
+    if (!(surfaceType & EGL_PBUFFER_BIT))
+        return setError(EGL_BAD_MATCH, EGL_NO_SURFACE);
+        
+    EGLint configID;
+    if (getConfigAttrib(dpy, config, EGL_CONFIG_ID, &configID) == EGL_FALSE)
+        return EGL_FALSE;
+
+    int32_t depthFormat;
+    int32_t pixelFormat;
+    switch(configID) {
+    case 0: 
+        pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 
+        depthFormat = 0;
+        break;
+    case 1:
+        pixelFormat = GGL_PIXEL_FORMAT_RGB_565; 
+        depthFormat = GGL_PIXEL_FORMAT_Z_16;
+        break;
+    case 2:
+        pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 
+        depthFormat = 0;
+        break;
+    case 3:
+        pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888; 
+        depthFormat = GGL_PIXEL_FORMAT_Z_16;
+        break;
+    case 4:
+        pixelFormat = GGL_PIXEL_FORMAT_A_8; 
+        depthFormat = 0;
+        break;
+    case 5:
+        pixelFormat = GGL_PIXEL_FORMAT_A_8; 
+        depthFormat = GGL_PIXEL_FORMAT_Z_16;
+        break;
+    default:
+        return setError(EGL_BAD_MATCH, EGL_NO_SURFACE);
+    }
+
+    int32_t w = 0;
+    int32_t h = 0;
+    while (attrib_list[0]) {
+        if (attrib_list[0] == EGL_WIDTH)  w = attrib_list[1];
+        if (attrib_list[0] == EGL_HEIGHT) h = attrib_list[1];
+        attrib_list+=2;
+    }
+
+    egl_surface_t* surface =
+        new egl_pbuffer_surface_t(dpy, config, depthFormat, w, h, pixelFormat);
+
+    if (!surface->isValid()) {
+        // there was a problem in the ctor, the error
+        // flag has been set.
+        delete surface;
+        surface = 0;
+    }
+    return surface;
+}
+
+// ----------------------------------------------------------------------------
+}; // namespace android
+// ----------------------------------------------------------------------------
+
+using namespace android;
+
+// ----------------------------------------------------------------------------
+// Initialization
+// ----------------------------------------------------------------------------
+
+EGLDisplay eglGetDisplay(NativeDisplayType display)
+{
+#ifndef HAVE_ANDROID_OS
+    // this just needs to be done once
+    if (gGLKey == -1) {
+        pthread_mutex_lock(&gInitMutex);
+        if (gGLKey == -1)
+            pthread_key_create(&gGLKey, NULL);
+        pthread_mutex_unlock(&gInitMutex);
+    }
+#endif
+    if (display == EGL_DEFAULT_DISPLAY) {
+        EGLDisplay dpy = (EGLDisplay)1;
+        egl_display_t& d = egl_display_t::get_display(dpy);
+        d.type = display;
+        return dpy;
+    }    
+    return EGL_NO_DISPLAY;
+}
+
+EGLBoolean eglInitialize(EGLDisplay dpy, EGLint *major, EGLint *minor)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    
+    EGLBoolean res = EGL_TRUE;
+    egl_display_t& d = egl_display_t::get_display(dpy);
+    
+    if (android_atomic_inc(&d.initialized) == 0) {
+        // initialize stuff here if needed
+        //pthread_mutex_lock(&gInitMutex);
+        //pthread_mutex_unlock(&gInitMutex);
+    }
+
+    if (res == EGL_TRUE) {
+        if (major != NULL) *major = VERSION_MAJOR;
+        if (minor != NULL) *minor = VERSION_MINOR;
+    }
+    return res;
+}
+
+EGLBoolean eglTerminate(EGLDisplay dpy)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+
+    EGLBoolean res = EGL_TRUE;
+    egl_display_t& d = egl_display_t::get_display(dpy);
+    if (android_atomic_dec(&d.initialized) == 1) {
+        // TODO: destroy all resources (surfaces, contexts, etc...)
+        //pthread_mutex_lock(&gInitMutex);
+        //pthread_mutex_unlock(&gInitMutex);
+    }
+    return res;
+}
+
+// ----------------------------------------------------------------------------
+// configuration
+// ----------------------------------------------------------------------------
+
+EGLBoolean eglGetConfigs(   EGLDisplay dpy,
+                            EGLConfig *configs,
+                            EGLint config_size, EGLint *num_config)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+
+    GLint numConfigs = NELEM(gConfigs);
+    if (!configs) {
+        *num_config = numConfigs;
+        return EGL_TRUE;
+    }
+    GLint i;
+    for (i=0 ; i<numConfigs && i<config_size ; i++) {
+        *configs++ = (EGLConfig)i;
+    }
+    *num_config = i;
+    return EGL_TRUE;
+}
+
+EGLBoolean eglChooseConfig( EGLDisplay dpy, const EGLint *attrib_list,
+                            EGLConfig *configs, EGLint config_size,
+                            EGLint *num_config)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+
+    if (ggl_unlikely(configs==0 || attrib_list==0)) {
+        *num_config = 0;
+        return EGL_TRUE;
+    }
+    
+    int numAttributes = 0;
+    int numConfigs =  NELEM(gConfigs);
+    uint32_t possibleMatch = (1<<numConfigs)-1;
+    while(possibleMatch && *attrib_list != EGL_NONE) {
+        numAttributes++;
+        EGLint attr = *attrib_list++;
+        EGLint val  = *attrib_list++;
+        for (int i=0 ; i<numConfigs ; i++) {
+            if (!(possibleMatch & (1<<i)))
+                continue;
+            if (isAttributeMatching(i, attr, val) == 0) {
+                possibleMatch &= ~(1<<i);
+            }
+        }
+    }
+
+    // now, handle the attributes which have a useful default value
+    for (size_t j=0 ; j<NELEM(config_defaults) ; j++) {
+        // see if this attribute was specified, if not apply its
+        // default value
+        if (binarySearch<config_pair_t>(
+                (config_pair_t const*)attrib_list,
+                0, numAttributes,
+                config_defaults[j].key) < 0)
+        {
+            for (int i=0 ; i<numConfigs ; i++) {
+                if (!(possibleMatch & (1<<i)))
+                    continue;
+                if (isAttributeMatching(i,
+                        config_defaults[j].key,
+                        config_defaults[j].value) == 0)
+                {
+                    possibleMatch &= ~(1<<i);
+                }
+            }
+        }
+    }
+
+    // return the configurations found
+    int n=0;
+    if (possibleMatch) {
+        for (int i=0 ; config_size && i<numConfigs ; i++) {
+            if (possibleMatch & (1<<i)) {
+               *configs++ = (EGLConfig)i;
+                config_size--;
+                n++;
+            }
+        }
+    }
+    *num_config = n;
+     return EGL_TRUE;
+}
+
+EGLBoolean eglGetConfigAttrib(EGLDisplay dpy, EGLConfig config,
+        EGLint attribute, EGLint *value)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+
+    return getConfigAttrib(dpy, config, attribute, value);
+}
+
+// ----------------------------------------------------------------------------
+// surfaces
+// ----------------------------------------------------------------------------
+
+EGLSurface eglCreateWindowSurface(  EGLDisplay dpy, EGLConfig config,
+                                    NativeWindowType window,
+                                    const EGLint *attrib_list)
+{
+    return createWindowSurface(dpy, config, window, attrib_list);
+}
+    
+EGLSurface eglCreatePixmapSurface(  EGLDisplay dpy, EGLConfig config,
+                                    NativePixmapType pixmap,
+                                    const EGLint *attrib_list)
+{
+    return createPixmapSurface(dpy, config, pixmap, attrib_list);
+}
+
+EGLSurface eglCreatePbufferSurface( EGLDisplay dpy, EGLConfig config,
+                                    const EGLint *attrib_list)
+{
+    return createPbufferSurface(dpy, config, attrib_list);
+}
+                                    
+EGLBoolean eglDestroySurface(EGLDisplay dpy, EGLSurface eglSurface)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    if (eglSurface != EGL_NO_SURFACE) {
+        egl_surface_t* surface( static_cast<egl_surface_t*>(eglSurface) );
+        if (surface->magic != egl_surface_t::MAGIC)
+            return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        if (surface->dpy != dpy)
+            return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+        delete surface;
+    }
+    return EGL_TRUE;
+}
+
+EGLBoolean eglQuerySurface( EGLDisplay dpy, EGLSurface eglSurface,
+                            EGLint attribute, EGLint *value)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    egl_surface_t* surface = static_cast<egl_surface_t*>(eglSurface);
+    if (surface->dpy != dpy)
+        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+
+    EGLBoolean ret = EGL_TRUE;
+    switch (attribute) {
+        case EGL_CONFIG_ID:
+            ret = getConfigAttrib(dpy, surface->config, EGL_CONFIG_ID, value);
+            break;
+        case EGL_WIDTH:
+            *value = surface->getWidth();
+            break;
+        case EGL_HEIGHT:
+            *value = surface->getHeight();
+            break;
+        case EGL_LARGEST_PBUFFER:
+            // not modified for a window or pixmap surface
+            break;
+        case EGL_TEXTURE_FORMAT:
+            *value = EGL_NO_TEXTURE;
+            break;
+        case EGL_TEXTURE_TARGET:
+            *value = EGL_NO_TEXTURE;
+            break;
+        case EGL_MIPMAP_TEXTURE:
+            *value = EGL_FALSE;
+            break;
+        case EGL_MIPMAP_LEVEL:
+            *value = 0;
+            break;
+        case EGL_RENDER_BUFFER:
+            // TODO: return the real RENDER_BUFFER here
+            *value = EGL_BACK_BUFFER;
+            break;
+        case EGL_HORIZONTAL_RESOLUTION:
+            // pixel/mm * EGL_DISPLAY_SCALING
+            *value = surface->getHorizontalResolution();
+            break;
+        case EGL_VERTICAL_RESOLUTION:
+            // pixel/mm * EGL_DISPLAY_SCALING
+            *value = surface->getVerticalResolution();
+            break;
+        case EGL_PIXEL_ASPECT_RATIO: {
+            // w/h * EGL_DISPLAY_SCALING
+            int wr = surface->getHorizontalResolution();
+            int hr = surface->getVerticalResolution();
+            *value = (wr * EGL_DISPLAY_SCALING) / hr;
+        } break;
+        case EGL_SWAP_BEHAVIOR:
+            *value = surface->getSwapBehavior(); 
+            break;
+        default:
+            ret = setError(EGL_BAD_ATTRIBUTE, EGL_FALSE);
+    }
+    return ret;
+}
+
+EGLContext eglCreateContext(EGLDisplay dpy, EGLConfig config,
+                            EGLContext share_list, const EGLint *attrib_list)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE);
+
+    ogles_context_t* gl = ogles_init(sizeof(egl_context_t));
+    if (!gl) return setError(EGL_BAD_ALLOC, EGL_NO_CONTEXT);
+
+    egl_context_t* c = static_cast<egl_context_t*>(gl->rasterizer.base);
+    c->flags = egl_context_t::NEVER_CURRENT;
+    c->dpy = dpy;
+    c->config = config;
+    c->read = 0;
+    c->draw = 0;
+    return (EGLContext)gl;
+}
+
+EGLBoolean eglDestroyContext(EGLDisplay dpy, EGLContext ctx)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    egl_context_t* c = egl_context_t::context(ctx);
+    if (c->flags & egl_context_t::IS_CURRENT)
+        setGlThreadSpecific(0);
+    ogles_uninit((ogles_context_t*)ctx);
+    return EGL_TRUE;
+}
+
+EGLBoolean eglMakeCurrent(  EGLDisplay dpy, EGLSurface draw,
+                            EGLSurface read, EGLContext ctx)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    if (draw) {
+        egl_surface_t* s = (egl_surface_t*)draw;
+        if (s->dpy != dpy)
+            return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+        // TODO: check that draw and read are compatible with the context
+    }
+
+    EGLContext current_ctx = EGL_NO_CONTEXT;
+    
+    if ((read == EGL_NO_SURFACE && draw == EGL_NO_SURFACE) && (ctx != EGL_NO_CONTEXT))
+        return setError(EGL_BAD_MATCH, EGL_FALSE);
+
+    if ((read != EGL_NO_SURFACE || draw != EGL_NO_SURFACE) && (ctx == EGL_NO_CONTEXT))
+        return setError(EGL_BAD_MATCH, EGL_FALSE);
+
+    if (ctx == EGL_NO_CONTEXT) {
+        // if we're detaching, we need the current context
+        current_ctx = (EGLContext)getGlThreadSpecific();
+    } else {
+        egl_context_t* c = egl_context_t::context(ctx);
+        egl_surface_t* d = (egl_surface_t*)draw;
+        egl_surface_t* r = (egl_surface_t*)read;
+        if ((d && d->ctx && d->ctx != ctx) ||
+            (r && r->ctx && r->ctx != ctx)) {
+            // once of the surface is bound to a context in another thread
+            return setError(EGL_BAD_ACCESS, EGL_FALSE);
+        }
+    }
+
+    ogles_context_t* gl = (ogles_context_t*)ctx;
+    if (makeCurrent(gl) == 0) {
+        if (ctx) {
+            egl_context_t* c = egl_context_t::context(ctx);
+            egl_surface_t* d = (egl_surface_t*)draw;
+            egl_surface_t* r = (egl_surface_t*)read;
+            c->read = read;
+            c->draw = draw;
+            if (c->flags & egl_context_t::NEVER_CURRENT) {
+                c->flags &= ~egl_context_t::NEVER_CURRENT;
+                GLint w = 0;
+                GLint h = 0;
+                if (draw) {
+                    w = d->getWidth();
+                    h = d->getHeight();
+                }
+                ogles_surfaceport(gl, 0, 0);
+                ogles_viewport(gl, 0, 0, w, h);
+                ogles_scissor(gl, 0, 0, w, h);
+            }
+            if (d) {
+                d->ctx = ctx;
+                d->bindDrawSurface(gl);
+            }
+            if (r) {
+                r->ctx = ctx;
+                r->bindReadSurface(gl);
+            }
+        } else {
+            // if surfaces were bound to the context bound to this thread
+            // mark then as unbound.
+            if (current_ctx) {
+                egl_context_t* c = egl_context_t::context(current_ctx);
+                egl_surface_t* d = (egl_surface_t*)c->draw;
+                egl_surface_t* r = (egl_surface_t*)c->read;
+                if (d) d->ctx = EGL_NO_CONTEXT;
+                if (r) r->ctx = EGL_NO_CONTEXT;
+            }
+        }
+        return EGL_TRUE;
+    }
+    return setError(EGL_BAD_ACCESS, EGL_FALSE);
+}
+
+EGLContext eglGetCurrentContext(void)
+{
+    // eglGetCurrentContext returns the current EGL rendering context,
+    // as specified by eglMakeCurrent. If no context is current,
+    // EGL_NO_CONTEXT is returned.
+    return (EGLContext)getGlThreadSpecific();
+}
+
+EGLSurface eglGetCurrentSurface(EGLint readdraw)
+{
+    // eglGetCurrentSurface returns the read or draw surface attached
+    // to the current EGL rendering context, as specified by eglMakeCurrent.
+    // If no context is current, EGL_NO_SURFACE is returned.
+    EGLContext ctx = (EGLContext)getGlThreadSpecific();
+    if (ctx == EGL_NO_CONTEXT) return EGL_NO_SURFACE;
+    egl_context_t* c = egl_context_t::context(ctx);
+    if (readdraw == EGL_READ) {
+        return c->read;
+    } else if (readdraw == EGL_DRAW) {
+        return c->draw;
+    }
+    return setError(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE);
+}
+
+EGLDisplay eglGetCurrentDisplay(void)
+{
+    // eglGetCurrentDisplay returns the current EGL display connection
+    // for the current EGL rendering context, as specified by eglMakeCurrent.
+    // If no context is current, EGL_NO_DISPLAY is returned.
+    EGLContext ctx = (EGLContext)getGlThreadSpecific();
+    if (ctx == EGL_NO_CONTEXT) return EGL_NO_DISPLAY;
+    egl_context_t* c = egl_context_t::context(ctx);
+    return c->dpy;
+}
+
+EGLBoolean eglQueryContext( EGLDisplay dpy, EGLContext ctx,
+                            EGLint attribute, EGLint *value)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    egl_context_t* c = egl_context_t::context(ctx);
+    switch (attribute) {
+        case EGL_CONFIG_ID:
+            // Returns the ID of the EGL frame buffer configuration with
+            // respect to which the context was created
+            return getConfigAttrib(dpy, c->config, EGL_CONFIG_ID, value);
+    }
+    return setError(EGL_BAD_ATTRIBUTE, EGL_FALSE);
+}
+
+EGLBoolean eglWaitGL(void)
+{
+    return EGL_TRUE;
+}
+
+EGLBoolean eglWaitNative(EGLint engine)
+{
+    return EGL_TRUE;
+}
+
+EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface draw)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    
+    egl_surface_t* d = static_cast<egl_surface_t*>(draw);
+    if (d->dpy != dpy)
+        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+
+    // post the surface
+    d->swapBuffers();
+
+    // if it's bound to a context, update the buffer
+    if (d->ctx != EGL_NO_CONTEXT) {
+        d->bindDrawSurface((ogles_context_t*)d->ctx);
+        // if this surface is also the read surface of the context
+        // it is bound to, make sure to update the read buffer as well.
+        // The EGL spec is a little unclear about this.
+        egl_context_t* c = egl_context_t::context(d->ctx);
+        if (c->read == draw) {
+            d->bindReadSurface((ogles_context_t*)d->ctx);
+        }
+    }
+
+    return EGL_TRUE;
+}
+
+EGLBoolean eglCopyBuffers(  EGLDisplay dpy, EGLSurface surface,
+                            NativePixmapType target)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    // TODO: eglCopyBuffers()
+    return EGL_FALSE;
+}
+
+EGLint eglGetError(void)
+{
+    return getError();
+}
+
+const char* eglQueryString(EGLDisplay dpy, EGLint name)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, (const char*)0);
+
+    switch (name) {
+        case EGL_VENDOR:
+            return gVendorString;
+        case EGL_VERSION:
+            return gVersionString;
+        case EGL_EXTENSIONS:
+            return gExtensionsString;
+        case EGL_CLIENT_APIS:
+            return gClientApiString;
+    }
+    return setError(EGL_BAD_PARAMETER, (const char *)0);
+}
+
+// ----------------------------------------------------------------------------
+// EGL 1.1
+// ----------------------------------------------------------------------------
+
+EGLBoolean eglSurfaceAttrib(
+        EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    // TODO: eglSurfaceAttrib()
+    return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+}
+
+EGLBoolean eglBindTexImage(
+        EGLDisplay dpy, EGLSurface surface, EGLint buffer)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    // TODO: eglBindTexImage()
+    return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+}
+
+EGLBoolean eglReleaseTexImage(
+        EGLDisplay dpy, EGLSurface surface, EGLint buffer)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    // TODO: eglReleaseTexImage()
+    return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+}
+
+EGLBoolean eglSwapInterval(EGLDisplay dpy, EGLint interval)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    // TODO: eglSwapInterval()
+    return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+}
+
+// ----------------------------------------------------------------------------
+// EGL 1.2
+// ----------------------------------------------------------------------------
+
+EGLBoolean eglBindAPI(EGLenum api)
+{
+    if (api != EGL_OPENGL_ES_API)
+        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+    return EGL_TRUE;
+}
+
+EGLenum eglQueryAPI(void)
+{
+    return EGL_OPENGL_ES_API;
+}
+
+EGLBoolean eglWaitClient(void)
+{
+    glFinish();
+    return EGL_TRUE;
+}
+
+EGLBoolean eglReleaseThread(void)
+{
+    // TODO: eglReleaseThread()
+    return EGL_TRUE;
+}
+
+EGLSurface eglCreatePbufferFromClientBuffer(
+          EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer,
+          EGLConfig config, const EGLint *attrib_list)
+{
+    if (egl_display_t::is_valid(dpy) == EGL_FALSE)
+        return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE);
+    // TODO: eglCreatePbufferFromClientBuffer()
+    return setError(EGL_BAD_PARAMETER, EGL_NO_SURFACE);
+}
+
+// ----------------------------------------------------------------------------
+// Android extensions
+// ----------------------------------------------------------------------------
+
+void (*eglGetProcAddress (const char *procname))()
+{
+    extention_map_t const * const map = gExtentionMap;
+    for (uint32_t i=0 ; i<NELEM(gExtentionMap) ; i++) {
+        if (!strcmp(procname, map[i].name)) {
+            return map[i].address;
+        }
+    }
+    return NULL;
+}