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am 2d8d120d: Fix blank / partial screenshots

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* commit '2d8d120dc175c131a75e93fb1de61a9f432ddce9':
  Fix blank / partial screenshots
This commit is contained in:
Andy McFadden 2013-10-10 08:23:01 -07:00 committed by Android Git Automerger
commit c00ab7b5aa
1 changed files with 21 additions and 0 deletions
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21
services/surfaceflinger/SurfaceFlinger.cpp
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@ -2982,6 +2982,27 @@ status_t SurfaceFlinger::captureScreenImplLocked(
renderScreenImplLocked(hw, reqWidth, reqHeight,
minLayerZ, maxLayerZ, true);
// Create a sync point and wait on it, so we know the buffer is
// ready before we pass it along. We can't trivially call glFlush(),
// so we use a wait flag instead.
// TODO: pass a sync fd to queueBuffer() and let the consumer wait.
EGLSyncKHR sync = eglCreateSyncKHR(mEGLDisplay, EGL_SYNC_FENCE_KHR, NULL);
if (sync != EGL_NO_SYNC_KHR) {
EGLint result = eglClientWaitSyncKHR(mEGLDisplay, sync,
EGL_SYNC_FLUSH_COMMANDS_BIT_KHR, 2000000000 /*2 sec*/);
EGLint eglErr = eglGetError();
eglDestroySyncKHR(mEGLDisplay, sync);
if (result == EGL_TIMEOUT_EXPIRED_KHR) {
ALOGW("captureScreen: fence wait timed out");
} else {
ALOGW_IF(eglErr != EGL_SUCCESS,
"captureScreen: error waiting on EGL fence: %#x", eglErr);
}
} else {
ALOGW("captureScreen: error creating EGL fence: %#x", eglGetError());
// not fatal
}
if (DEBUG_SCREENSHOTS) {
uint32_t* pixels = new uint32_t[reqWidth*reqHeight];
getRenderEngine().readPixels(0, 0, reqWidth, reqHeight, pixels);