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am 3b7a1e6d: Merge change Ic52ba78c into eclair-mr2

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Merge commit '3b7a1e6d70fda4ce834034930847fe2cc75de515' into eclair-mr2-plus-aosp

* commit '3b7a1e6d70fda4ce834034930847fe2cc75de515':
  Allow multiple OpenGL contexts on systems that support them.
This commit is contained in:
Jack Palevich
2009-10-13 18:14:51 -07:00
committed by Android Git Automerger
parent a788f09894 3b7a1e6d70
commit 98a51b8686
1 changed files with 55 additions and 8 deletions
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63
opengl/java/android/opengl/GLSurfaceView.java
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@ -18,7 +18,6 @@ package android.opengl;
import java.io.Writer;
import java.util.ArrayList;
import java.util.concurrent.Semaphore;
import javax.microedition.khronos.egl.EGL10;
import javax.microedition.khronos.egl.EGL11;
@ -30,6 +29,8 @@ import javax.microedition.khronos.opengles.GL;
import javax.microedition.khronos.opengles.GL10;
import android.content.Context;
import android.content.pm.ConfigurationInfo;
import android.os.SystemProperties;
import android.util.AttributeSet;
import android.util.Log;
import android.view.SurfaceHolder;
@ -966,16 +967,12 @@ public class GLSurfaceView extends SurfaceView implements SurfaceHolder.Callback
* accesses EGL.
*/
try {
try {
sEglSemaphore.acquire();
} catch (InterruptedException e) {
return;
}
sGLAccessLock.acquire();
guardedRun();
} catch (InterruptedException e) {
// fall thru and exit normally
} finally {
sEglSemaphore.release();
sGLAccessLock.release();
}
}
@ -1040,6 +1037,7 @@ public class GLSurfaceView extends SurfaceView implements SurfaceHolder.Callback
}
if (changed) {
gl = (GL10) mEglHelper.createSurface(getHolder());
sGLAccessLock.checkGLDriver(gl);
tellRendererSurfaceChanged = true;
}
if (tellRendererSurfaceCreated) {
@ -1241,7 +1239,56 @@ public class GLSurfaceView extends SurfaceView implements SurfaceHolder.Callback
}
}
private static final Semaphore sEglSemaphore = new Semaphore(1);
private static class GLAccessLock {
public synchronized void acquire() throws InterruptedException {
if (! mGLESVersionCheckComplete) {
mGLESVersion = SystemProperties.getInt(
"ro.opengles.version",
ConfigurationInfo.GL_ES_VERSION_UNDEFINED);
if (mGLESVersion >= kGLES_20) {
mMultipleGLESContextsAllowed = true;
}
mGLESVersionCheckComplete = true;
}
while ((! mMultipleGLESContextsAllowed)
&& mGLContextCount > 0) {
wait();
}
mGLContextCount++;
}
public synchronized void release() {
mGLContextCount--;
notifyAll();
}
public synchronized void checkGLDriver(GL10 gl) {
if (! mGLESDriverCheckComplete) {
if (mGLESVersion < kGLES_20) {
String renderer = gl.glGetString(GL10.GL_RENDERER);
mMultipleGLESContextsAllowed =
! renderer.startsWith(kMSM7K_RENDERER_PREFIX);
notifyAll();
}
mGLESDriverCheckComplete = true;
}
}
private boolean mGLESVersionCheckComplete;
private int mGLESVersion;
private boolean mGLESDriverCheckComplete;
private boolean mMultipleGLESContextsAllowed;
private int mGLContextCount;
private static final int kGLES_20 = 0x20000;
private static final String kMSM7K_RENDERER_PREFIX =
"Q3Dimension MSM7500 ";
};
private static GLAccessLock sGLAccessLock = new GLAccessLock();
private boolean mSizeChanged = true;
private GLThread mGLThread;