diff --git a/services/surfaceflinger/RenderEngine/GLES11RenderEngine.cpp b/services/surfaceflinger/RenderEngine/GLES11RenderEngine.cpp
index cbff320..d1e324c 100644
--- a/services/surfaceflinger/RenderEngine/GLES11RenderEngine.cpp
+++ b/services/surfaceflinger/RenderEngine/GLES11RenderEngine.cpp
@@ -17,6 +17,8 @@
 #include <GLES/gl.h>
 #include <GLES/glext.h>
 
+#include <ui/Rect.h>
+
 #include <utils/String8.h>
 #include <cutils/compiler.h>
 
@@ -72,13 +74,23 @@
 }
 
 void GLES11RenderEngine::setViewportAndProjection(
-        size_t vpw, size_t vph, size_t w, size_t h, bool yswap) {
+        size_t vpw, size_t vph, Rect sourceCrop, size_t hwh, bool yswap) {
     glViewport(0, 0, vpw, vph);
     glMatrixMode(GL_PROJECTION);
     glLoadIdentity();
-    // put the origin in the left-bottom corner
-    if (yswap)  glOrthof(0, w, h, 0, 0, 1);
-    else        glOrthof(0, w, 0, h, 0, 1);
+
+    size_t l = sourceCrop.left;
+    size_t r = sourceCrop.right;
+
+    // In GL, (0, 0) is the bottom-left corner, so flip y coordinates
+    size_t t = hwh - sourceCrop.top;
+    size_t b = hwh - sourceCrop.bottom;
+
+    if (yswap) {
+        glOrthof(l, r, t, b, 0, 1);
+    } else {
+        glOrthof(l, r, b, t, 0, 1);
+    }
     glMatrixMode(GL_MODELVIEW);
 }
 
diff --git a/services/surfaceflinger/RenderEngine/GLES11RenderEngine.h b/services/surfaceflinger/RenderEngine/GLES11RenderEngine.h
index cd53aab..1a94592 100644
--- a/services/surfaceflinger/RenderEngine/GLES11RenderEngine.h
+++ b/services/surfaceflinger/RenderEngine/GLES11RenderEngine.h
@@ -49,7 +49,8 @@
     virtual ~GLES11RenderEngine();
 
     virtual void dump(String8& result);
-    virtual void setViewportAndProjection(size_t vpw, size_t vph, size_t w, size_t h, bool yswap);
+    virtual void setViewportAndProjection(size_t vpw, size_t vph,
+            Rect sourceCrop, size_t hwh, bool yswap);
     virtual void setupLayerBlending(bool premultipliedAlpha, bool opaque, int alpha);
     virtual void setupDimLayerBlending(int alpha);
     virtual void setupLayerTexturing(const Texture& texture);
diff --git a/services/surfaceflinger/RenderEngine/GLES20RenderEngine.cpp b/services/surfaceflinger/RenderEngine/GLES20RenderEngine.cpp
index a2a6270..8c1f04e 100644
--- a/services/surfaceflinger/RenderEngine/GLES20RenderEngine.cpp
+++ b/services/surfaceflinger/RenderEngine/GLES20RenderEngine.cpp
@@ -19,6 +19,8 @@
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 
+#include <ui/Rect.h>
+
 #include <utils/String8.h>
 #include <utils/Trace.h>
 
@@ -78,10 +80,21 @@
 }
 
 void GLES20RenderEngine::setViewportAndProjection(
-        size_t vpw, size_t vph, size_t w, size_t h, bool yswap) {
+        size_t vpw, size_t vph, Rect sourceCrop, size_t hwh, bool yswap) {
+
+    size_t l = sourceCrop.left;
+    size_t r = sourceCrop.right;
+
+    // In GL, (0, 0) is the bottom-left corner, so flip y coordinates
+    size_t t = hwh - sourceCrop.top;
+    size_t b = hwh - sourceCrop.bottom;
+
     mat4 m;
-    if (yswap)  m = mat4::ortho(0, w, h, 0, 0, 1);
-    else        m = mat4::ortho(0, w, 0, h, 0, 1);
+    if (yswap) {
+        m = mat4::ortho(l, r, t, b, 0, 1);
+    } else {
+        m = mat4::ortho(l, r, b, t, 0, 1);
+    }
 
     glViewport(0, 0, vpw, vph);
     mState.setProjectionMatrix(m);
diff --git a/services/surfaceflinger/RenderEngine/GLES20RenderEngine.h b/services/surfaceflinger/RenderEngine/GLES20RenderEngine.h
index 8b67fcc..b6d32fc 100644
--- a/services/surfaceflinger/RenderEngine/GLES20RenderEngine.h
+++ b/services/surfaceflinger/RenderEngine/GLES20RenderEngine.h
@@ -64,7 +64,8 @@
     virtual ~GLES20RenderEngine();
 
     virtual void dump(String8& result);
-    virtual void setViewportAndProjection(size_t vpw, size_t vph, size_t w, size_t h, bool yswap);
+    virtual void setViewportAndProjection(size_t vpw, size_t vph,
+            Rect sourceCrop, size_t hwh, bool yswap);
     virtual void setupLayerBlending(bool premultipliedAlpha, bool opaque, int alpha);
     virtual void setupDimLayerBlending(int alpha);
     virtual void setupLayerTexturing(const Texture& texture);
diff --git a/services/surfaceflinger/RenderEngine/RenderEngine.h b/services/surfaceflinger/RenderEngine/RenderEngine.h
index 577dc0a..a2d8242 100644
--- a/services/surfaceflinger/RenderEngine/RenderEngine.h
+++ b/services/surfaceflinger/RenderEngine/RenderEngine.h
@@ -89,7 +89,8 @@
 
     // set-up
     virtual void checkErrors() const;
-    virtual void setViewportAndProjection(size_t vpw, size_t vph, size_t w, size_t h, bool yswap) = 0;
+    virtual void setViewportAndProjection(size_t vpw, size_t vph,
+            Rect sourceCrop, size_t hwh, bool yswap) = 0;
     virtual void setupLayerBlending(bool premultipliedAlpha, bool opaque, int alpha) = 0;
     virtual void setupDimLayerBlending(int alpha) = 0;
     virtual void setupLayerTexturing(const Texture& texture) = 0;