Expose a function to set OpenGL Trace level.

This patch adds a function setGlDebugLevel() to libEGL, and
exposes it to the Java layer at android.opengl.GLUtils.enableTracing().

Change-Id: Ia5abb130bc32fcfe3ab25b0a0a5283a54c54f357

2 files changed, 18 insertions, 2 deletions

diff --git a/core/jni/android/opengl/util.cpp b/core/jni/android/opengl/util.cpp
index 929df540..634efa6 100644
--- a/core/jni/android/opengl/util.cpp
+++ b/core/jni/android/opengl/util.cpp
@@ -556,6 +556,12 @@ void nativeUtilsClassInit(JNIEnv *env, jclass clazz)
     nativeBitmapID = env->GetFieldID(bitmapClass, "mNativeBitmap", "I");
 }
 
+extern void setGLDebugLevel(int level);
+void nativeEnableTracing(JNIEnv *env, jclass clazz)
+{
+    setGLDebugLevel(1);
+}
+
 static int checkFormat(SkBitmap::Config config, int format, int type)
 {
     switch(config) {
@@ -1026,6 +1032,7 @@ static JNINativeMethod gUtilsMethods[] = {
     { "native_getType", "(Landroid/graphics/Bitmap;)I", (void*) util_getType },
     { "native_texImage2D", "(IIILandroid/graphics/Bitmap;II)I", (void*)util_texImage2D },
     { "native_texSubImage2D", "(IIIILandroid/graphics/Bitmap;II)I", (void*)util_texSubImage2D },
+    { "native_enableTracing", "()V",                    (void*)nativeEnableTracing },
 };
 
 static JNINativeMethod gEtc1Methods[] = {
diff --git a/opengl/java/android/opengl/GLUtils.java b/opengl/java/android/opengl/GLUtils.java
index 125c56e..1527f22 100644
--- a/opengl/java/android/opengl/GLUtils.java
+++ b/opengl/java/android/opengl/GLUtils.java
@@ -227,9 +227,9 @@ public final class GLUtils {
     /**
      * Return a string for the EGL error code, or the hex representation
      * if the error is unknown.
-     * 
+     *
      * @param error The EGL error to convert into a String.
-     * 
+     *
      * @return An error string corresponding to the EGL error code.
      */
     public static String getEGLErrorString(int error) {
@@ -269,6 +269,14 @@ public final class GLUtils {
         }
     }
 
+    /**
+     * Enable tracing of OpenGL functions for this application.
+     * @hide
+     */
+    public static void enableTracing() {
+        native_enableTracing();
+    }
+
     native private static void nativeClassInit();
 
     native private static int native_getInternalFormat(Bitmap bitmap);
@@ -277,4 +285,5 @@ public final class GLUtils {
             Bitmap bitmap, int type, int border);
     native private static int native_texSubImage2D(int target, int level, int xoffset, int yoffset,
             Bitmap bitmap, int format, int type);
+    native private static void native_enableTracing();
 }