1 files changed, 57 insertions, 0 deletions
diff --git a/libs/surfaceflinger/LayerBase.cpp b/libs/surfaceflinger/LayerBase.cpp
index ecc78946bb..8003d22daa 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;