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fix external displays

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we were not calling eglSwapBuffers() on external displays
because they can't use HWC which caused us to think they
didn't have GLES composition.

Change-Id: I6cef4ae40b138412d2e6f2acda33c9d222b03a83
This commit is contained in:
Mathias Agopian 2012-09-18 01:21:55 -07:00
parent 41cb1b5f67
commit d870703d55
1 changed files with 14 additions and 7 deletions
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21
services/surfaceflinger/DisplayDevice.cpp
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@ -179,7 +179,7 @@ void DisplayDevice::flip(const Region& dirty) const
b.left, b.top, b.width(), b.height());
}
#endif
mPageFlipCount++;
}
@ -188,14 +188,21 @@ void DisplayDevice::swapBuffers(HWComposer& hwc) const {
// no HWC, we call eglSwapBuffers()
eglSwapBuffers(mDisplay, mSurface);
} else {
if (hwc.hasGlesComposition(mType)) {
if (hwc.supportsFramebufferTarget() ||
mType >= DisplayDevice::DISPLAY_VIRTUAL) {
// as of hwc 1.1 we always call eglSwapBuffers, however,
// on older versions of HWC, we need to call it only on
// virtual displays
// We have a valid HWC, but not all displays can use it, in particular
// the virtual displays are on their own.
// TODO: HWC 1.2 will allow virtual displays
if (mType >= DisplayDevice::DISPLAY_VIRTUAL) {
// always call eglSwapBuffers() for virtual displays
eglSwapBuffers(mDisplay, mSurface);
} else if (hwc.supportsFramebufferTarget()) {
// as of hwc 1.1 we always call eglSwapBuffers if we have some
// GLES layers
if (hwc.hasGlesComposition(mType)) {
eglSwapBuffers(mDisplay, mSurface);
}
} else {
// HWC doesn't have the framebuffer target, we don't call
// eglSwapBuffers(), since this is handled by HWComposer::commit().
}
}
}