diff --git a/libs/surfaceflinger/LayerDim.cpp b/libs/surfaceflinger/LayerDim.cpp
index 0c347cc..fd61e30 100644
--- a/libs/surfaceflinger/LayerDim.cpp
+++ b/libs/surfaceflinger/LayerDim.cpp
@@ -14,8 +14,6 @@
  * limitations under the License.
  */
 
-#define LOG_TAG "SurfaceFlinger"
-
 #include <stdlib.h>
 #include <stdint.h>
 #include <sys/types.h>
@@ -23,9 +21,10 @@
 #include <utils/Errors.h>
 #include <utils/Log.h>
 
+#include <ui/GraphicBuffer.h>
+
 #include "LayerDim.h"
 #include "SurfaceFlinger.h"
-#include "VRamHeap.h"
 #include "DisplayHardware/DisplayHardware.h"
 
 namespace android {
@@ -33,27 +32,76 @@
 
 const uint32_t LayerDim::typeInfo = LayerBaseClient::typeInfo | 0x10;
 const char* const LayerDim::typeID = "LayerDim";
-sp<MemoryDealer> LayerDim::mDimmerDealer;
-LayerBitmap LayerDim::mDimmerBitmap;
+
+bool LayerDim::sUseTexture;
+GLuint LayerDim::sTexId;
+EGLImageKHR LayerDim::sImage;
+int32_t LayerDim::sWidth;
+int32_t LayerDim::sHeight;
 
 // ---------------------------------------------------------------------------
 
 LayerDim::LayerDim(SurfaceFlinger* flinger, DisplayID display,
-        Client* client, int32_t i)
-     : LayerBaseClient(flinger, display, client, i)
+        const sp<Client>& client, int32_t i)
+    : LayerBaseClient(flinger, display, client, i)
 {
 }
 
 void LayerDim::initDimmer(SurfaceFlinger* flinger, uint32_t w, uint32_t h)
 {
-    // must only be called once.
-    mDimmerDealer = flinger->getSurfaceHeapManager()
-            ->createHeap(ISurfaceComposer::eHardware);
-    if (mDimmerDealer != 0) {
-        mDimmerBitmap.init(mDimmerDealer);
-        mDimmerBitmap.setBits(w, h, 1, PIXEL_FORMAT_RGB_565);
-        mDimmerBitmap.clear();
+    sTexId = -1;
+    sImage = EGL_NO_IMAGE_KHR;
+    sWidth = w;
+    sHeight = h;
+    sUseTexture = false;
+    
+#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
+     * software renderer will defer to copybit, for this to work we need to
+     * use an EGLImage texture so copybit can actually make use of it.
+     * This burns a full-screen worth of graphic memory.
+     */
+
+    const DisplayHardware& hw(flinger->graphicPlane(0).displayHardware());
+    uint32_t flags = hw.getFlags();
+
+    if (LIKELY(flags & DisplayHardware::DIRECT_TEXTURE)) {
+        sp<GraphicBuffer> buffer = new GraphicBuffer(w, h, PIXEL_FORMAT_RGB_565,
+                 GraphicBuffer::USAGE_SW_WRITE_OFTEN |
+                 GraphicBuffer::USAGE_HW_TEXTURE);
+        
+        android_native_buffer_t* clientBuf = buffer->getNativeBuffer();
+
+        glGenTextures(1, &sTexId);
+        glBindTexture(GL_TEXTURE_2D, sTexId);
+
+        EGLDisplay dpy = eglGetCurrentDisplay();
+        sImage = eglCreateImageKHR(dpy, EGL_NO_CONTEXT, 
+                EGL_NATIVE_BUFFER_ANDROID, (EGLClientBuffer)clientBuf, 0);
+        if (sImage == EGL_NO_IMAGE_KHR) {
+            LOGE("eglCreateImageKHR() failed. err=0x%4x", eglGetError());
+            return;
+        }
+
+        glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)sImage);
+        GLint error = glGetError();
+        if (error != GL_NO_ERROR) {
+            eglDestroyImageKHR(dpy, sImage);
+            LOGE("glEGLImageTargetTexture2DOES() failed. err=0x%4x", error);
+            return;
+        }
+
+        // initialize the texture with zeros
+        GGLSurface t;
+        buffer->lock(&t, GRALLOC_USAGE_SW_WRITE_OFTEN);
+        memset(t.data, 0, t.stride * t.height * 2);
+        buffer->unlock();
+        sUseTexture = true;
     }
+#endif
 }
 
 LayerDim::~LayerDim()
@@ -63,49 +111,56 @@
 void LayerDim::onDraw(const Region& clip) const
 {
     const State& s(drawingState());
-
-    Region::iterator iterator(clip);
-    if (s.alpha>0 && iterator) {
+    Region::const_iterator it = clip.begin();
+    Region::const_iterator const end = clip.end();
+    if (s.alpha>0 && (it != end)) {
         const DisplayHardware& hw(graphicPlane(0).displayHardware());
-
-        status_t err = NO_ERROR;
-        const int can_use_copybit = canUseCopybit();
-        if (can_use_copybit)  {
-            // StopWatch watch("copybit");
-            copybit_image_t dst;
-            hw.getDisplaySurface(&dst);
-            const copybit_rect_t& drect
-                = reinterpret_cast<const copybit_rect_t&>(mTransformedBounds);
-
-            copybit_image_t src;
-            mDimmerBitmap.getBitmapSurface(&src);
-            const copybit_rect_t& srect(drect);
-
-            copybit_device_t* copybit = mFlinger->getBlitEngine();
-            copybit->set_parameter(copybit, COPYBIT_TRANSFORM, 0);
-            copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, s.alpha);
-            copybit->set_parameter(copybit, COPYBIT_DITHER, COPYBIT_ENABLE);
-            region_iterator it(clip);
-            err = copybit->stretch(copybit, &dst, &src, &drect, &srect, &it);
+        const GGLfixed alpha = (s.alpha << 16)/255;
+        const uint32_t fbHeight = hw.getHeight();
+        glDisable(GL_DITHER);
+        glEnable(GL_BLEND);
+        glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
+        glColor4x(0, 0, 0, alpha);
+        
+#if defined(DIM_WITH_TEXTURE) && defined(EGL_ANDROID_image_native_buffer)
+        if (sUseTexture) {
+            glBindTexture(GL_TEXTURE_2D, sTexId);
+            glEnable(GL_TEXTURE_2D);
+            glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+            const GLshort texCoords[4][2] = {
+                    { 0,  0 },
+                    { 0,  1 },
+                    { 1,  1 },
+                    { 1,  0 }
+            };
+            glMatrixMode(GL_TEXTURE);
+            glLoadIdentity();
+            glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+            glTexCoordPointer(2, GL_SHORT, 0, texCoords);
+        } else
+#endif
+        {
+            glDisable(GL_TEXTURE_2D);
         }
 
-        if (!can_use_copybit || err) {
-            const GGLfixed alpha = (s.alpha << 16)/255;
-            const uint32_t fbHeight = hw.getHeight();
-            glDisable(GL_TEXTURE_2D);
-            glDisable(GL_DITHER);
-            glEnable(GL_BLEND);
-            glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
-            glColor4x(0, 0, 0, alpha);
-            glVertexPointer(2, GL_FIXED, 0, mVertices);
-            Rect r;
-            while (iterator.iterate(&r)) {
-                const GLint sy = fbHeight - (r.top + r.height());
-                glScissor(r.left, sy, r.width(), r.height());
-                glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 
-            }
+        GLshort w = sWidth;
+        GLshort h = sHeight;
+        const GLshort vertices[4][2] = {
+                { 0, 0 },
+                { 0, h },
+                { w, h },
+                { w, 0 }
+        };
+        glVertexPointer(2, GL_SHORT, 0, vertices);
+
+        while (it != end) {
+            const Rect& r = *it++;
+            const GLint sy = fbHeight - (r.top + r.height());
+            glScissor(r.left, sy, r.width(), r.height());
+            glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 
         }
     }
+    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
 }
 
 // ---------------------------------------------------------------------------