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Diffstat (limited to 'opengl/java/android/opengl/GLDebugHelper.java')
-rw-r--r-- | opengl/java/android/opengl/GLDebugHelper.java | 107 |
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; + } +} + |