12 files changed, 220 insertions, 218 deletions

diff --git a/include/ui/GraphicBuffer.h b/include/ui/GraphicBuffer.h
index 8897f03..2172536 100644
--- a/include/ui/GraphicBuffer.h
+++ b/include/ui/GraphicBuffer.h
@@ -66,7 +66,11 @@ public:
     GraphicBuffer();
 
     // creates w * h buffer
-    GraphicBuffer(uint32_t w, uint32_t h, PixelFormat format, uint32_t ssage);
+    GraphicBuffer(uint32_t w, uint32_t h, PixelFormat format, uint32_t usage);
+
+    // create a buffer from an existing handle
+    GraphicBuffer(uint32_t w, uint32_t h, PixelFormat format, uint32_t usage,
+            uint32_t stride, native_handle_t* handle, bool keepOwnership);
 
     // return status
     status_t initCheck() const;
@@ -94,9 +98,15 @@ protected:
     GraphicBuffer(const Parcel& reply);
     virtual ~GraphicBuffer();
 
+    enum {
+        ownNone   = 0,
+        ownHandle = 1,
+        ownData   = 2,
+    };
+
     inline const GraphicBufferMapper& getBufferMapper() const { return mBufferMapper; }
     inline GraphicBufferMapper& getBufferMapper() { return mBufferMapper; }
-    bool mOwner;
+    uint8_t mOwner;
 
 private:
     friend class Surface;
diff --git a/libs/surfaceflinger/DisplayHardware/DisplayHardware.cpp b/libs/surfaceflinger/DisplayHardware/DisplayHardware.cpp
index f84933e..1abfd68 100644
--- a/libs/surfaceflinger/DisplayHardware/DisplayHardware.cpp
+++ b/libs/surfaceflinger/DisplayHardware/DisplayHardware.cpp
@@ -256,12 +256,16 @@ void DisplayHardware::init(uint32_t dpy)
     if (strstr(gl_extensions, "GL_OES_draw_texture")) {
         mFlags |= DRAW_TEXTURE_EXTENSION;
     }
+#ifdef EGL_ANDROID_image_native_buffer
     if (strstr( gl_extensions, "GL_OES_EGL_image") &&
         (strstr(egl_extensions, "EGL_KHR_image_base") || 
                 strstr(egl_extensions, "EGL_KHR_image")) &&
         strstr(egl_extensions, "EGL_ANDROID_image_native_buffer")) {
         mFlags |= DIRECT_TEXTURE;
     }
+#else
+#warning "EGL_ANDROID_image_native_buffer not supported"
+#endif
 
     // Unbind the context from this thread
     eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
diff --git a/libs/surfaceflinger/Layer.cpp b/libs/surfaceflinger/Layer.cpp
index 2bb1e12..f5a5a0b 100644
--- a/libs/surfaceflinger/Layer.cpp
+++ b/libs/surfaceflinger/Layer.cpp
@@ -130,62 +130,6 @@ status_t Layer::setBuffers( uint32_t w, uint32_t h,
     return NO_ERROR;
 }
 
-status_t Layer::initializeEglImageLocked(
-        const sp<GraphicBuffer>& buffer, Texture* texture)
-{
-    status_t err = NO_ERROR;
-
-    // we need to recreate the texture
-    EGLDisplay dpy(mFlinger->graphicPlane(0).getEGLDisplay());
-
-    // free the previous image
-    if (texture->image != EGL_NO_IMAGE_KHR) {
-        eglDestroyImageKHR(dpy, texture->image);
-        texture->image = EGL_NO_IMAGE_KHR;
-    }
-
-    // construct an EGL_NATIVE_BUFFER_ANDROID
-    android_native_buffer_t* clientBuf = buffer->getNativeBuffer();
-
-    // create the new EGLImageKHR
-    const EGLint attrs[] = {
-            EGL_IMAGE_PRESERVED_KHR,    EGL_TRUE,
-            EGL_NONE,                   EGL_NONE
-    };
-    texture->image = eglCreateImageKHR(
-            dpy, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID,
-            (EGLClientBuffer)clientBuf, attrs);
-
-    LOGE_IF(texture->image == EGL_NO_IMAGE_KHR,
-            "eglCreateImageKHR() failed. err=0x%4x",
-            eglGetError());
-
-    if (texture->image != EGL_NO_IMAGE_KHR) {
-        glBindTexture(GL_TEXTURE_2D, texture->name);
-        glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,
-                (GLeglImageOES)texture->image);
-        GLint error = glGetError();
-        if (UNLIKELY(error != GL_NO_ERROR)) {
-            // this failed, for instance, because we don't support NPOT.
-            // FIXME: do something!
-            LOGE("layer=%p, glEGLImageTargetTexture2DOES(%p) "
-                 "failed err=0x%04x",
-                 this, texture->image, error);
-            mFlags &= ~DisplayHardware::DIRECT_TEXTURE;
-            err = INVALID_OPERATION;
-        } else {
-            // Everything went okay!
-            texture->NPOTAdjust = false;
-            texture->dirty  = false;
-            texture->width  = clientBuf->width;
-            texture->height = clientBuf->height;
-        }
-    } else {
-        err = INVALID_OPERATION;
-    }
-    return err;
-}
-
 void Layer::reloadTexture(const Region& dirty)
 {
     Mutex::Autolock _l(mLock);
@@ -199,10 +143,11 @@ void Layer::reloadTexture(const Region& dirty)
         mTextures[index].height = 0;
     }
 
+#ifdef EGL_ANDROID_image_native_buffer
     if (mFlags & DisplayHardware::DIRECT_TEXTURE) {
         if (buffer->usage & GraphicBuffer::USAGE_HW_TEXTURE) {
             if (mTextures[index].dirty) {
-                initializeEglImageLocked(buffer, &mTextures[index]);
+                initializeEglImage(buffer, &mTextures[index]);
             }
         } else {
             if (mHybridBuffer==0 || (mHybridBuffer->width != buffer->width ||
@@ -212,7 +157,7 @@ void Layer::reloadTexture(const Region& dirty)
                         buffer->width, buffer->height, buffer->format,
                         GraphicBuffer::USAGE_SW_WRITE_OFTEN |
                         GraphicBuffer::USAGE_HW_TEXTURE);
-                initializeEglImageLocked(
+                initializeEglImage(
                         mHybridBuffer, &mTextures[0]);
             }
 
@@ -279,7 +224,9 @@ void Layer::reloadTexture(const Region& dirty)
                 buffer->unlock();
             }
         }
-    } else {
+    } else
+#endif
+    {
         for (size_t i=0 ; i<NUM_BUFFERS ; i++) {
             mTextures[i].image = EGL_NO_IMAGE_KHR;
         }
diff --git a/libs/surfaceflinger/Layer.h b/libs/surfaceflinger/Layer.h
index 57b3dfa..1310ecc 100644
--- a/libs/surfaceflinger/Layer.h
+++ b/libs/surfaceflinger/Layer.h
@@ -85,8 +85,6 @@ private:
     }
  
     void reloadTexture(const Region& dirty);
-    status_t initializeEglImageLocked(
-            const sp<GraphicBuffer>& buffer, Texture* texture);
 
     uint32_t getEffectiveUsage(uint32_t usage) const;
 
diff --git a/libs/surfaceflinger/LayerBase.cpp b/libs/surfaceflinger/LayerBase.cpp
index ecc7894..8003d22 100644
--- a/libs/surfaceflinger/LayerBase.cpp
+++ b/libs/surfaceflinger/LayerBase.cpp
@@ -617,6 +617,63 @@ void LayerBase::loadTexture(Texture* texture,
     }
 }
 
+status_t LayerBase::initializeEglImage(
+        const sp<GraphicBuffer>& buffer, Texture* texture)
+{
+    status_t err = NO_ERROR;
+
+    // we need to recreate the texture
+    EGLDisplay dpy(mFlinger->graphicPlane(0).getEGLDisplay());
+
+    // free the previous image
+    if (texture->image != EGL_NO_IMAGE_KHR) {
+        eglDestroyImageKHR(dpy, texture->image);
+        texture->image = EGL_NO_IMAGE_KHR;
+    }
+
+    // construct an EGL_NATIVE_BUFFER_ANDROID
+    android_native_buffer_t* clientBuf = buffer->getNativeBuffer();
+
+    // create the new EGLImageKHR
+    const EGLint attrs[] = {
+            EGL_IMAGE_PRESERVED_KHR,    EGL_TRUE,
+            EGL_NONE,                   EGL_NONE
+    };
+    texture->image = eglCreateImageKHR(
+            dpy, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID,
+            (EGLClientBuffer)clientBuf, attrs);
+
+    LOGE_IF(texture->image == EGL_NO_IMAGE_KHR,
+            "eglCreateImageKHR() failed. err=0x%4x",
+            eglGetError());
+
+    if (texture->image != EGL_NO_IMAGE_KHR) {
+        glBindTexture(GL_TEXTURE_2D, texture->name);
+        glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,
+                (GLeglImageOES)texture->image);
+        GLint error = glGetError();
+        if (UNLIKELY(error != GL_NO_ERROR)) {
+            // this failed, for instance, because we don't support NPOT.
+            // FIXME: do something!
+            LOGE("layer=%p, glEGLImageTargetTexture2DOES(%p) "
+                 "failed err=0x%04x",
+                 this, texture->image, error);
+            mFlags &= ~DisplayHardware::DIRECT_TEXTURE;
+            err = INVALID_OPERATION;
+        } else {
+            // Everything went okay!
+            texture->NPOTAdjust = false;
+            texture->dirty  = false;
+            texture->width  = clientBuf->width;
+            texture->height = clientBuf->height;
+        }
+    } else {
+        err = INVALID_OPERATION;
+    }
+    return err;
+}
+
+
 // ---------------------------------------------------------------------------
 
 int32_t LayerBaseClient::sIdentity = 0;
diff --git a/libs/surfaceflinger/LayerBase.h b/libs/surfaceflinger/LayerBase.h
index efa4f8c..ed07b3f 100644
--- a/libs/surfaceflinger/LayerBase.h
+++ b/libs/surfaceflinger/LayerBase.h
@@ -261,6 +261,8 @@ protected:
           void drawWithOpenGL(const Region& clip, const Texture& texture) const;
           void loadTexture(Texture* texture, 
                   const Region& dirty, const GGLSurface& t) const;
+          status_t initializeEglImage(
+                  const sp<GraphicBuffer>& buffer, Texture* texture);
 
           
                 sp<SurfaceFlinger> mFlinger;
diff --git a/libs/surfaceflinger/LayerBuffer.cpp b/libs/surfaceflinger/LayerBuffer.cpp
index 7e27a02..6590503 100644
--- a/libs/surfaceflinger/LayerBuffer.cpp
+++ b/libs/surfaceflinger/LayerBuffer.cpp
@@ -339,12 +339,6 @@ LayerBuffer::BufferSource::BufferSource(LayerBuffer& layer,
     mLayer.setNeedsBlending((info.h_alpha - info.l_alpha) > 0);    
     mBufferSize = info.getScanlineSize(buffers.hor_stride)*buffers.ver_stride;
     mLayer.forceVisibilityTransaction();
-
-    hw_module_t const* module;
-    mBlitEngine = NULL;
-    if (hw_get_module(COPYBIT_HARDWARE_MODULE_ID, &module) == 0) {
-        copybit_open(module, &mBlitEngine);
-    }
 }
 
 LayerBuffer::BufferSource::~BufferSource()
@@ -352,8 +346,9 @@ LayerBuffer::BufferSource::~BufferSource()
     if (mTexture.name != -1U) {
         glDeleteTextures(1, &mTexture.name);
     }
-    if (mBlitEngine) {
-        copybit_close(mBlitEngine);
+    if (mTexture.image != EGL_NO_IMAGE_KHR) {
+        EGLDisplay dpy(mLayer.mFlinger->graphicPlane(0).getEGLDisplay());
+        eglDestroyImageKHR(dpy, mTexture.image);
     }
 }
 
@@ -421,122 +416,28 @@ void LayerBuffer::BufferSource::onDraw(const Region& clip) const
     status_t err = NO_ERROR;
     NativeBuffer src(ourBuffer->getBuffer());
     const Rect transformedBounds(mLayer.getTransformedBounds());
-    copybit_device_t* copybit = mBlitEngine;
-
-    if (copybit)  {
-        const int src_width  = src.crop.r - src.crop.l;
-        const int src_height = src.crop.b - src.crop.t;
-        int W = transformedBounds.width();
-        int H = transformedBounds.height();
-        if (mLayer.getOrientation() & Transform::ROT_90) {
-            int t(W); W=H; H=t;
-        }
-
-#ifdef EGL_ANDROID_get_render_buffer
-        EGLDisplay dpy = eglGetCurrentDisplay();
-        EGLSurface draw = eglGetCurrentSurface(EGL_DRAW); 
-        EGLClientBuffer clientBuf = eglGetRenderBufferANDROID(dpy, draw);
-        android_native_buffer_t* nb = (android_native_buffer_t*)clientBuf;
-        if (nb == 0) {
-            err = BAD_VALUE;
-        } else {
-            copybit_image_t dst;
-            dst.w       = nb->width;
-            dst.h       = nb->height;
-            dst.format  = nb->format;
-            dst.base    = NULL; // unused by copybit on msm7k
-            dst.handle  = (native_handle_t *)nb->handle;
-
-            /* With LayerBuffer, it is likely that we'll have to rescale the
-             * surface, because this is often used for video playback or
-             * camera-preview. Since we want these operation as fast as possible
-             * we make sure we can use the 2D H/W even if it doesn't support
-             * the requested scale factor, in which case we perform the scaling
-             * in several passes. */
-
-            const float min = copybit->get(copybit, COPYBIT_MINIFICATION_LIMIT);
-            const float mag = copybit->get(copybit, COPYBIT_MAGNIFICATION_LIMIT);
-
-            float xscale = 1.0f;
-            if (src_width > W*min)          xscale = 1.0f / min;
-            else if (src_width*mag < W)     xscale = mag;
-
-            float yscale = 1.0f;
-            if (src_height > H*min)         yscale = 1.0f / min;
-            else if (src_height*mag < H)    yscale = mag;
-
-            if (UNLIKELY(xscale!=1.0f || yscale!=1.0f)) {
-                const int tmp_w = floorf(src_width  * xscale);
-                const int tmp_h = floorf(src_height * yscale);
-                
-                if (mTempBitmap==0 || 
-                        mTempBitmap->getWidth() < size_t(tmp_w) || 
-                        mTempBitmap->getHeight() < size_t(tmp_h)) {
-                    mTempBitmap.clear();
-                    mTempBitmap = new GraphicBuffer(
-                            tmp_w, tmp_h, src.img.format, 
-                            GraphicBuffer::USAGE_HW_2D);
-                    err = mTempBitmap->initCheck();
-                }
-
-                if (LIKELY(err == NO_ERROR)) {
-                    NativeBuffer tmp;
-                    tmp.img.w = tmp_w;
-                    tmp.img.h = tmp_h;
-                    tmp.img.format = src.img.format;
-                    tmp.img.handle = (native_handle_t*)mTempBitmap->getNativeBuffer()->handle;
-                    tmp.crop.l = 0;
-                    tmp.crop.t = 0;
-                    tmp.crop.r = tmp.img.w;
-                    tmp.crop.b = tmp.img.h;
-
-                    region_iterator tmp_it(Region(Rect(tmp.crop.r, tmp.crop.b)));
-                    copybit->set_parameter(copybit, COPYBIT_TRANSFORM, 0);
-                    copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, 0xFF);
-                    copybit->set_parameter(copybit, COPYBIT_DITHER, COPYBIT_DISABLE);
-                    err = copybit->stretch(copybit,
-                            &tmp.img, &src.img, &tmp.crop, &src.crop, &tmp_it);
-                    src = tmp;
-                }
-            }
 
-            const Rect transformedBounds(mLayer.getTransformedBounds());
-            const copybit_rect_t& drect =
-                reinterpret_cast<const copybit_rect_t&>(transformedBounds);
-            const State& s(mLayer.drawingState());
-            region_iterator it(clip);
-
-            // pick the right orientation for this buffer
-            int orientation = mLayer.getOrientation();
-            if (UNLIKELY(mBufferHeap.transform)) {
-                Transform rot90;
-                GraphicPlane::orientationToTransfrom(
-                        ISurfaceComposer::eOrientation90, 0, 0, &rot90);
-                const Transform& planeTransform(mLayer.graphicPlane(0).transform());
-                const Layer::State& s(mLayer.drawingState());
-                Transform tr(planeTransform * s.transform * rot90);
-                orientation = tr.getOrientation();
-            }
+    if (UNLIKELY(mTexture.name == -1LU)) {
+        mTexture.name = mLayer.createTexture();
+    }
 
-            copybit->set_parameter(copybit, COPYBIT_TRANSFORM, orientation);
-            copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, s.alpha);
-            copybit->set_parameter(copybit, COPYBIT_DITHER, COPYBIT_ENABLE);
+#if defined(EGL_ANDROID_image_native_buffer)
+    if (mLayer.mFlags & DisplayHardware::DIRECT_TEXTURE) {
+         // NOTE: Assume the buffer is  allocated with the proper USAGE flags
+        sp<GraphicBuffer> graphicBuffer = new GraphicBuffer(
+                src.crop.r, src.crop.b, src.img.format, 
+                GraphicBuffer::USAGE_HW_TEXTURE,
+                src.img.w, src.img.handle, false);
 
-            err = copybit->stretch(copybit,
-                    &dst, &src.img, &drect, &src.crop, &it);
-            if (err != NO_ERROR) {
-                LOGE("copybit failed (%s)", strerror(err));
-            }
-        }
+        err = mLayer.initializeEglImage(graphicBuffer, &mTexture);
     }
 #endif
-    
-    if (!copybit || err) 
-    {
+    else {
+        err = INVALID_OPERATION;
+    }
+
+    if (err != NO_ERROR) {
         // OpenGL fall-back
-        if (UNLIKELY(mTexture.name == -1LU)) {
-            mTexture.name = mLayer.createTexture();
-        }
         GLuint w = 0;
         GLuint h = 0;
         GGLSurface t;
@@ -549,11 +450,11 @@ void LayerBuffer::BufferSource::onDraw(const Region& clip) const
         t.data = (GGLubyte*)src.img.base;
         const Region dirty(Rect(t.width, t.height));
         mLayer.loadTexture(&mTexture, dirty, t);
-        mTexture.transform = mBufferHeap.transform;
-        mLayer.drawWithOpenGL(clip, mTexture);
     }
-}
 
+    mTexture.transform = mBufferHeap.transform;
+    mLayer.drawWithOpenGL(clip, mTexture);
+}
 
 // ---------------------------------------------------------------------------
 
diff --git a/libs/surfaceflinger/LayerBuffer.h b/libs/surfaceflinger/LayerBuffer.h
index 5eb472c..438b711 100644
--- a/libs/surfaceflinger/LayerBuffer.h
+++ b/libs/surfaceflinger/LayerBuffer.h
@@ -132,7 +132,6 @@ private:
         size_t                          mBufferSize;
         mutable sp<GraphicBuffer>       mTempBitmap;
         mutable LayerBase::Texture      mTexture;
-        copybit_device_t*               mBlitEngine;
     };
     
     class OverlaySource : public Source {
diff --git a/libs/surfaceflinger/LayerDim.cpp b/libs/surfaceflinger/LayerDim.cpp
index 538dc77..fd61e30 100644
--- a/libs/surfaceflinger/LayerDim.cpp
+++ b/libs/surfaceflinger/LayerDim.cpp
@@ -55,8 +55,8 @@ void LayerDim::initDimmer(SurfaceFlinger* flinger, uint32_t w, uint32_t h)
     sHeight = h;
     sUseTexture = false;
     
-#ifdef DIM_WITH_TEXTURE
-    
+#if defined(DIM_WITH_TEXTURE) && defined(EGL_ANDROID_image_native_buffer)
+
 #warning "using a texture to implement LayerDim"
     
     /* On some h/w like msm7K, it is faster to use a texture because the
@@ -69,7 +69,6 @@ void LayerDim::initDimmer(SurfaceFlinger* flinger, uint32_t w, uint32_t h)
     uint32_t flags = hw.getFlags();
 
     if (LIKELY(flags & DisplayHardware::DIRECT_TEXTURE)) {
-        // TODO: api to pass the usage flags
         sp<GraphicBuffer> buffer = new GraphicBuffer(w, h, PIXEL_FORMAT_RGB_565,
                  GraphicBuffer::USAGE_SW_WRITE_OFTEN |
                  GraphicBuffer::USAGE_HW_TEXTURE);
@@ -123,7 +122,7 @@ void LayerDim::onDraw(const Region& clip) const
         glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
         glColor4x(0, 0, 0, alpha);
         
-#ifdef DIM_WITH_TEXTURE
+#if defined(DIM_WITH_TEXTURE) && defined(EGL_ANDROID_image_native_buffer)
         if (sUseTexture) {
             glBindTexture(GL_TEXTURE_2D, sTexId);
             glEnable(GL_TEXTURE_2D);
diff --git a/libs/ui/GraphicBuffer.cpp b/libs/ui/GraphicBuffer.cpp
index 1cf20d7..efe2d78 100644
--- a/libs/ui/GraphicBuffer.cpp
+++ b/libs/ui/GraphicBuffer.cpp
@@ -37,7 +37,7 @@ namespace android {
 // ===========================================================================
 
 GraphicBuffer::GraphicBuffer()
-    : BASE(), mOwner(false), mBufferMapper(GraphicBufferMapper::get()),
+    : BASE(), mOwner(ownData), mBufferMapper(GraphicBufferMapper::get()),
       mInitCheck(NO_ERROR),  mVStride(0), mIndex(-1)
 {
     width  = 
@@ -50,7 +50,7 @@ GraphicBuffer::GraphicBuffer()
 
 GraphicBuffer::GraphicBuffer(uint32_t w, uint32_t h, 
         PixelFormat reqFormat, uint32_t reqUsage)
-    : BASE(), mOwner(false), mBufferMapper(GraphicBufferMapper::get()),
+    : BASE(), mOwner(ownData), mBufferMapper(GraphicBufferMapper::get()),
       mInitCheck(NO_ERROR),  mVStride(0), mIndex(-1)
 {
     width  = 
@@ -62,8 +62,23 @@ GraphicBuffer::GraphicBuffer(uint32_t w, uint32_t h,
     mInitCheck = initSize(w, h, reqFormat, reqUsage);
 }
 
+GraphicBuffer::GraphicBuffer(uint32_t w, uint32_t h,
+        PixelFormat inFormat, uint32_t inUsage,
+        uint32_t inStride, native_handle_t* inHandle, bool keepOwnership)
+    : BASE(), mOwner(keepOwnership ? ownHandle : ownNone),
+      mBufferMapper(GraphicBufferMapper::get()),
+      mInitCheck(NO_ERROR),  mVStride(0), mIndex(-1)
+{
+    width  = w;
+    height = h;
+    stride = inStride;
+    format = inFormat;
+    usage  = inUsage;
+    handle = inHandle;
+}
+
 GraphicBuffer::GraphicBuffer(const Parcel& data) 
-    : BASE(), mOwner(true), mBufferMapper(GraphicBufferMapper::get()),
+    : BASE(), mOwner(ownHandle), mBufferMapper(GraphicBufferMapper::get()),
       mInitCheck(NO_ERROR),  mVStride(0), mIndex(-1)
 {
     // we own the handle in this case
@@ -83,10 +98,10 @@ GraphicBuffer::GraphicBuffer(const Parcel& data)
 GraphicBuffer::~GraphicBuffer()
 {
     if (handle) {
-        if (mOwner) {
+        if (mOwner == ownHandle) {
             native_handle_close(handle);
             native_handle_delete(const_cast<native_handle*>(handle));
-        } else {
+        } else if (mOwner == ownData) {
             GraphicBufferAllocator& allocator(GraphicBufferAllocator::get());
             allocator.free(handle);
         }
@@ -106,6 +121,9 @@ android_native_buffer_t* GraphicBuffer::getNativeBuffer() const
 status_t GraphicBuffer::reallocate(uint32_t w, uint32_t h, PixelFormat f,
         uint32_t reqUsage)
 {
+    if (mOwner != ownData)
+        return INVALID_OPERATION;
+
     if (handle) {
         GraphicBufferAllocator& allocator(GraphicBufferAllocator::get());
         allocator.free(handle);
diff --git a/opengl/libagl/Android.mk b/opengl/libagl/Android.mk
index 2522656..9837845 100644
--- a/opengl/libagl/Android.mk
+++ b/opengl/libagl/Android.mk
@@ -25,6 +25,13 @@ LOCAL_SRC_FILES:= \
 	primitives.cpp.arm	        \
 	vertex.cpp.arm
 
+LOCAL_CFLAGS += -DLOG_TAG=\"libagl\"
+LOCAL_CFLAGS += -DGL_GLEXT_PROTOTYPES -DEGL_EGLEXT_PROTOTYPES
+LOCAL_CFLAGS += -fvisibility=hidden
+
+LOCAL_SHARED_LIBRARIES := libcutils libhardware libutils libpixelflinger
+LOCAL_LDLIBS := -lpthread -ldl
+
 ifeq ($(TARGET_ARCH),arm)
 	LOCAL_SRC_FILES += fixed_asm.S iterators.S
 	LOCAL_CFLAGS += -fstrict-aliasing
@@ -38,15 +45,9 @@ endif
 ifeq ($(LIBAGL_USE_GRALLOC_COPYBITS),1)
     LOCAL_CFLAGS += -DLIBAGL_USE_GRALLOC_COPYBITS
     LOCAL_SRC_FILES += copybit.cpp
+    LOCAL_SHARED_LIBRARIES += libui
 endif
 
-LOCAL_CFLAGS += -DLOG_TAG=\"libagl\"
-LOCAL_CFLAGS += -DGL_GLEXT_PROTOTYPES -DEGL_EGLEXT_PROTOTYPES
-
-LOCAL_SHARED_LIBRARIES := libcutils libhardware libutils libpixelflinger
-LOCAL_CFLAGS += -fvisibility=hidden
-
-LOCAL_LDLIBS := -lpthread -ldl
 
 LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/egl
 LOCAL_MODULE:= libGLES_android
diff --git a/opengl/libagl/copybit.cpp b/opengl/libagl/copybit.cpp
index 73b2355..0c3d0ee 100644
--- a/opengl/libagl/copybit.cpp
+++ b/opengl/libagl/copybit.cpp
@@ -33,6 +33,10 @@
 #include <hardware/copybit.h>
 #include <private/ui/android_natives_priv.h>
 
+#include <ui/GraphicBuffer.h>
+#include <ui/Region.h>
+#include <ui/Rect.h>
+
 
 #define DEBUG_COPYBIT true
 
@@ -175,16 +179,6 @@ static bool copybit(GLint x, GLint y,
         dtdy /= screen_h;
     }
     dtdy = -dtdy; // see equation of dtdy above
-    if (dsdx < c->copybits.minScale || dsdx > c->copybits.maxScale
-            || dtdy < c->copybits.minScale || dtdy > c->copybits.maxScale) {
-        // The requested scale is out of the range the hardware
-        // can support.
-        LOGD_IF(DEBUG_COPYBIT,
-                "scale out of range dsdx=%08x (Wcr=%d / w=%d), "
-                "dtdy=%08x (Hcr=%d / h=%d), Ucr=%d, Vcr=%d", 
-                dsdx, Wcr, w, dtdy, Hcr, h, Ucr, Vcr);
-        return false;
-    }
 
     // copybit doesn't say anything about filtering, so we can't
     // discriminate. On msm7k, copybit will always filter.
@@ -278,21 +272,93 @@ static bool copybit(GLint x, GLint y,
         return false;
     }
 
+    copybit_device_t* copybit = c->copybits.blitEngine;
+    copybit_image_t src;
+    buffer_handle_t source_hnd = textureObject->buffer->handle;
+    textureToCopyBitImage(&textureObject->surface, opFormat, source_hnd, &src);
+    copybit_rect_t srect = { Ucr, Vcr + Hcr, Ucr + Wcr, Vcr };
+
+    /*
+     *  Below we perform extra passes needed to emulate things the h/w
+     * cannot do.
+     */
 
-    // LOGW("calling copybits");
+    const GLfixed minScaleInv = gglDivQ(0x10000, c->copybits.minScale, 16);
+    const GLfixed maxScaleInv = gglDivQ(0x10000, c->copybits.maxScale, 16);
 
-    copybit_device_t* copybit = c->copybits.blitEngine;
+    sp<GraphicBuffer> tempBitmap;
+
+    if (dsdx < maxScaleInv || dsdx > minScaleInv ||
+        dtdy < maxScaleInv || dtdy > minScaleInv)
+    {
+        // The requested scale is out of the range the hardware
+        // can support.
+        LOGD_IF(DEBUG_COPYBIT,
+                "scale out of range dsdx=%08x (Wcr=%d / w=%d), "
+                "dtdy=%08x (Hcr=%d / h=%d), Ucr=%d, Vcr=%d",
+                dsdx, Wcr, w, dtdy, Hcr, h, Ucr, Vcr);
+
+        int32_t xscale=0x10000, yscale=0x10000;
+        if (dsdx > minScaleInv)         xscale = c->copybits.minScale;
+        else if (dsdx < maxScaleInv)    xscale = c->copybits.maxScale;
+        if (dtdy > minScaleInv)         yscale = c->copybits.minScale;
+        else if (dtdy < maxScaleInv)    yscale = c->copybits.maxScale;
+        dsdx = gglMulx(dsdx, xscale);
+        dtdy = gglMulx(dtdy, yscale);
+
+        /* we handle only one step of resizing below. Handling an arbitrary
+         * number is relatively easy (replace "if" above by "while"), but requires
+         * two intermediate buffers and so far we never had the need.
+         */
+
+        if (dsdx < maxScaleInv || dsdx > minScaleInv ||
+            dtdy < maxScaleInv || dtdy > minScaleInv) {
+            LOGD_IF(DEBUG_COPYBIT,
+                    "scale out of range dsdx=%08x (Wcr=%d / w=%d), "
+                    "dtdy=%08x (Hcr=%d / h=%d), Ucr=%d, Vcr=%d",
+                    dsdx, Wcr, w, dtdy, Hcr, h, Ucr, Vcr);
+            return false;
+        }
+
+        const int tmp_w = gglMulx(srect.r - srect.l, xscale, 16);
+        const int tmp_h = gglMulx(srect.b - srect.t, yscale, 16);
+
+        LOGD_IF(DEBUG_COPYBIT,
+                "xscale=%08x, yscale=%08x, dsdx=%08x, dtdy=%08x, tmp_w=%d, tmp_h=%d",
+                xscale, yscale, dsdx, dtdy, tmp_w, tmp_h);
+
+        tempBitmap = new GraphicBuffer(
+                    tmp_w, tmp_h, src.format,
+                    GraphicBuffer::USAGE_HW_2D);
+
+        status_t err = tempBitmap->initCheck();
+        if (err == NO_ERROR) {
+            copybit_image_t tmp_dst;
+            copybit_rect_t tmp_rect;
+            tmp_dst.w = tmp_w;
+            tmp_dst.h = tmp_h;
+            tmp_dst.format = src.format;
+            tmp_dst.handle = (native_handle_t*)tempBitmap->getNativeBuffer()->handle;
+            tmp_rect.l = 0;
+            tmp_rect.t = 0;
+            tmp_rect.r = tmp_dst.w;
+            tmp_rect.b = tmp_dst.h;
+            region_iterator tmp_it(Region(Rect(tmp_rect.r, tmp_rect.b)));
+            copybit->set_parameter(copybit, COPYBIT_TRANSFORM, 0);
+            copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, 0xFF);
+            copybit->set_parameter(copybit, COPYBIT_DITHER, COPYBIT_DISABLE);
+            err = copybit->stretch(copybit,
+                    &tmp_dst, &src, &tmp_rect, &srect, &tmp_it);
+            src = tmp_dst;
+            srect = tmp_rect;
+        }
+    }
 
     copybit_image_t dst;
     buffer_handle_t target_hnd = c->copybits.drawSurfaceBuffer;
     textureToCopyBitImage(&cbSurface, cbSurface.format, target_hnd, &dst);
     copybit_rect_t drect = {x, y, x+w, y+h};
 
-    copybit_image_t src;
-    buffer_handle_t source_hnd = textureObject->buffer->handle;
-    textureToCopyBitImage(&textureObject->surface, opFormat, source_hnd, &src);
-    copybit_rect_t srect = { Ucr, Vcr + Hcr, Ucr + Wcr, Vcr };
-
     copybit->set_parameter(copybit, COPYBIT_TRANSFORM, transform);
     copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, planeAlpha);
     copybit->set_parameter(copybit, COPYBIT_DITHER,