void DisplayDevice::swapBuffers(HWComposer& hwc) const {
// We need to call eglSwapBuffers() if:
// (1) we don't have a hardware composer, or
// (2) we did GLES composition this frame, and either
// (a) we have framebuffer target support (not present on legacy
// devices, where HWComposer::commit() handles things); or
// (b) this is a virtual display
if (hwc.initCheck() != NO_ERROR ||
(hwc.hasGlesComposition(mHwcDisplayId) &&
(hwc.supportsFramebufferTarget() || mType >= DISPLAY_VIRTUAL))) {
#ifndef MTK_DEFAULT_AOSP
// layer swap applied for HWC 1.1 and later
EGLBoolean success = EGL_TRUE;
if (mLayersSwapRequired) {
if (mType == DisplayDevice::DISPLAY_PRIMARY)
hwc.setWaitFramebufferTarget();
if (CC_UNLIKELY(mFlinger->sPropertiesState.mLineG3D))
drawDebugLine();
success = eglSwapBuffers(mDisplay, mSurface);
}
#else
EGLBoolean success = eglSwapBuffers(mDisplay, mSurface);
#endif
if (!success) {
EGLint error = eglGetError();
if (error == EGL_CONTEXT_LOST ||
mType == DisplayDevice::DISPLAY_PRIMARY) {
LOG_ALWAYS_FATAL("eglSwapBuffers(%p, %p) failed with 0x%08x",
mDisplay, mSurface, error);
} else {
ALOGE("eglSwapBuffers(%p, %p) failed with 0x%08x",
mDisplay, mSurface, error);
}
}
}
status_t result = mDisplaySurface->advanceFrame();
if (result != NO_ERROR) {
ALOGE("[%s] failed pushing new frame to HWC: %d",
mDisplayName.string(), result);
}
#ifndef MTK_DEFAULT_AOSP
// log display device FPS info for performace check
if (true == mFps.update()) {
ALOGI("[%s (type:%d)] fps:%f,dur:%.2f,max:%.2f,min:%.2f",
mDisplayName.string(), mType,
mFps.getFps(),
mFps.getLastLogDuration() / 1e6,
mFps.getMaxDuration() / 1e6,
mFps.getMinDuration() / 1e6);
}
#endif
}
