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The code intended to copy the old value of a field, before the
field was updated. However, what the code was actually doing was
copying the new value of the field, after the field was updated.
The fix was to move the copy to before the update.
This is work towards fixing bug 2228262
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This is work towards fixing bug 2228262
Specific issues fixed by this change:
+ GLThread names now include the thread id, making it easier to tell one
GLThread from another.
+ A private final static boolean LOG_THREADS can be set to true at compile
time to print out thread-related trace information, helpful for debugging
GLSurfaceView behavior. This static defaults to "false".
+ Changed calls to "notify" to "notifyAll" to make the code more
robust in case more than two threads are blocked on the same monitor.
+ Add a GLThreadManager to help manage the transition to
a new GLThread. Currently only one GLThread can be active in an address
space. When the second thread starts up, the GLThreadManager helps the old
GLThread to shut down,
+ Make sure we stop waiting for dead GLThreads. This is done by adding
checks for a variable mDone being true to our monitor wait loops. And
we use a "finally" clause at the end of GLThread.run() method to set mDone
and notifyAll any wait loops.
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Previously we always restricted the number of OpenGL contexts to 1.
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Clients can now modify the way that the EGL context and the EGL window
surface are created and destroyed.
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This API is hidden for now, will expose once it's been tested more.
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Until now we had a race condition where the GL rendering thread could
continue rendering a frame after we have returned from the
SurfaceHolder.Callback.surfaceDestroyed notification.
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instead of a better h/w one.
We now just try to honor the stencil / depth buffer "at least", while doing a "shortest distance" on the colors.
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automatically if needed.
this also ripples into the window manager API by making some constant there deprecated as well.
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There's another already-existing way of obtaining this information,
the ConfigurationInfo.reqGlEsVersion field returned from
ActivityManager.getDeviceConfigurationInfo.
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Apps targeting Donut and newer will throw an exception.
We use a heuristic to determine whether an app is pre-Donut or not:
We take the address space's __progname, and use that as the application's
package name. For simple applications this is correct.
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This was always a documented restriction, but was not enforced by the runtime until now.
Until now, if you passed in some other kind of buffer, it would sometimes work, and
sometimes fail. The failures happened when the Java VM moved the buffer data while
OpenGL was still holding a pointer to it.
Now we throw an exception rather than leaving the system in a potentially bad state.
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This is just plumbing. The Java APIs existed already, but there were no C APIs to hook the Java APIs
up to. Now there are C APIs, so we can call them.
Of course, whether or not the C APIs actually work when you call them depend upon the
capabilities of the active OpenGL driver, which must be checked at run time.
Also, while we're here, make the glGetString method static. It was always supposed to be static,
but was accidentally implemented as non-static, because the code was copied from the non-static
OpenGL ES classes.
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This change adds four new public classes that expose a static OpenGL ES 1.1 API:
android.opengl.GLES10
android.opengl.GLES10Ext
android.opengl.GLES11
android.opengl.GLES11Ext
Benefits:
+ The static API is slightly faster (1% to 4%) than the existing Interface based JSR239 API.
+ The static API is similar to the C API, which should make it easier to import C-based
example code.
+ The static API provides a clear path for adding new OpenGL ES 1.1 extensions
and OpenGL ES 2.0 APIs, neither of which currently have a JSR standard.
Example:
import static android.opengl.GLES10.*;
...
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
Note that it is possible to mix-and-match calls to both the static and JSR239 APIs.
This works because neither API maintains state. They both call through to the same underlying
C OpenGL ES APIs.
Implementation details:
This change enhances the "glgen" "gen" script to generate both the original JSR239 and
new static OpenGL ES APIs. The contents of the generated JSR239 classes remained the same as before,
so there is no need to check in new versions of the generated JSR239 classes.
As part of this work the gen script was updated to be somewhat more robust, and to
work with git instead of perforce. The script prints out commands to git add the generated files,
but leaves it up to the script runner to actually execute those commands.
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RENDERMODE_CONTUOUSLY --> RENDERMODE_CONTINUOUSLY
Original author: jackpal
Merged from: //branches/cupcake/...
Automated import of CL 145526
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Original author: jackpal
Merged from: //branches/cupcake/...
Automated import of CL 145523
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