summaryrefslogtreecommitdiffstats
path: root/opengl/java/android/opengl/GLDebugHelper.java
diff options
context:
space:
mode:
Diffstat (limited to 'opengl/java/android/opengl/GLDebugHelper.java')
-rw-r--r--opengl/java/android/opengl/GLDebugHelper.java107
1 files changed, 107 insertions, 0 deletions
diff --git a/opengl/java/android/opengl/GLDebugHelper.java b/opengl/java/android/opengl/GLDebugHelper.java
new file mode 100644
index 0000000..18a1e73
--- /dev/null
+++ b/opengl/java/android/opengl/GLDebugHelper.java
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.opengl;
+
+import java.io.Writer;
+
+import javax.microedition.khronos.egl.EGL;
+import javax.microedition.khronos.opengles.GL;
+
+/**
+ * A helper class for debugging OpenGL ES applications.
+ *
+ * Wraps the supplied GL interface with a new GL interface that adds support for
+ * error checking and logging.
+ *
+ */
+public class GLDebugHelper {
+
+ /**
+ * Wrap an existing GL interface in a new GL interface that adds support for
+ * error checking and/or logging.
+ * <p>
+ * Wrapping means that the GL instance that is passed in to this method is
+ * wrapped inside a new GL instance that optionally performs additional
+ * operations before and after calling the wrapped GL instance.
+ * <p>
+ * Error checking means that the wrapper will automatically call
+ * glError after each GL operation,
+ * and throw a GLException if an error occurs. (By design, calling glError
+ * itself will not cause an exception to be thrown.) Enabling error checking
+ * is an alternative to manually calling glError after every GL operation.
+ * <p>
+ * Logging means writing a text representation of each GL method call to
+ * a log.
+ * <p>
+ * @param gl the existing GL interface. Must implement GL and GL10. May
+ * optionally implement GL11 as well.
+ * @param configFlags A bitmask of error checking flags.
+ * @param log - null to disable logging, non-null to enable logging.
+ * @return the wrapped GL instance.
+ */
+
+ /**
+ * Check glError() after every call.
+ */
+ public static final int CONFIG_CHECK_GL_ERROR = (1 << 0);
+
+ /**
+ * Check if all calls are on the same thread.
+ */
+ public static final int CONFIG_CHECK_THREAD = (1 << 1);
+
+ /**
+ * Print argument names when logging GL Calls.
+ */
+ public static final int CONFIG_LOG_ARGUMENT_NAMES = (1 << 2);
+
+ /**
+ * The Error number used in the GLException that is thrown if
+ * CONFIG_CHECK_THREAD is enabled and you call OpenGL ES on the
+ * a different thread.
+ */
+ public static final int ERROR_WRONG_THREAD = 0x7000;
+
+ public static GL wrap(GL gl, int configFlags, Writer log) {
+ if ( configFlags != 0 ) {
+ gl = new GLErrorWrapper(gl, configFlags);
+ }
+ if ( log != null ) {
+ boolean logArgumentNames =
+ (CONFIG_LOG_ARGUMENT_NAMES & configFlags) != 0;
+ gl = new GLLogWrapper(gl, log, logArgumentNames);
+ }
+ return gl;
+ }
+
+ /**
+ * Wrap an existing EGL interface in a new EGL interface that adds
+ * support for error checking and/or logging.
+ * @param egl the existing GL interface. Must implement EGL and EGL10. May
+ * optionally implement EGL11 as well.
+ * @param configFlags A bitmask of error checking flags.
+ * @param log - null to disable logging, non-null to enable logging.
+ * @return the wrapped EGL interface.
+ */
+ public static EGL wrap(EGL egl, int configFlags, Writer log) {
+ if (log != null) {
+ egl = new EGLLogWrapper(egl, configFlags, log);
+ }
+ return egl;
+ }
+}
+