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we need to wait for vsync when doing the screen-off animation

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Bug: 6511421
Change-Id: I7a85a55e66a3a8d9937df575e98a5efec01a634f
This commit is contained in:
Mathias Agopian 2012-05-18 14:18:08 -07:00
parent a66faaa65a
commit ed9807bd7d
1 changed files with 48 additions and 0 deletions
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48
services/surfaceflinger/SurfaceFlinger.cpp
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@ -62,6 +62,7 @@
#include <private/android_filesystem_config.h>
#include <private/gui/SharedBufferStack.h>
#include <gui/BitTube.h>
#define EGL_VERSION_HW_ANDROID 0x3143
@ -1845,6 +1846,35 @@ status_t SurfaceFlinger::renderScreenToTextureLocked(DisplayID dpy,
// ---------------------------------------------------------------------------
class VSyncWaiter {
DisplayEventReceiver::Event buffer[4];
sp<Looper> looper;
sp<IDisplayEventConnection> events;
sp<BitTube> eventTube;
public:
VSyncWaiter(const sp<EventThread>& eventThread) {
looper = new Looper(true);
events = eventThread->createEventConnection();
eventTube = events->getDataChannel();
looper->addFd(eventTube->getFd(), 0, ALOOPER_EVENT_INPUT, 0, 0);
events->requestNextVsync();
}
void wait() {
ssize_t n;
looper->pollOnce(-1);
// we don't handle any errors here, it doesn't matter
// and we don't want to take the risk to get stuck.
// drain the events...
while ((n = DisplayEventReceiver::getEvents(
eventTube, buffer, 4)) > 0) ;
events->requestNextVsync();
}
};
status_t SurfaceFlinger::electronBeamOffAnimationImplLocked()
{
// get screen geometry
@ -1937,6 +1967,8 @@ status_t SurfaceFlinger::electronBeamOffAnimationImplLocked()
}
};
VSyncWaiter vsync(mEventThread);
// the full animation is 24 frames
char value[PROPERTY_VALUE_MAX];
property_get("debug.sf.electron_frames", value, "24");
@ -1963,6 +1995,9 @@ status_t SurfaceFlinger::electronBeamOffAnimationImplLocked()
const float vg = itg(i);
const float vb = itb(i);
// wait for vsync
vsync.wait();
// clear screen
glColorMask(1,1,1,1);
glClear(GL_COLOR_BUFFER_BIT);
@ -1998,6 +2033,10 @@ status_t SurfaceFlinger::electronBeamOffAnimationImplLocked()
for (int i=0 ; i<nbFrames ; i++) {
const float v = itg(i);
hverts(vtx, v);
// wait for vsync
vsync.wait();
glClear(GL_COLOR_BUFFER_BIT);
glColor4f(1-v, 1-v, 1-v, 1);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
@ -2095,6 +2134,8 @@ status_t SurfaceFlinger::electronBeamOnAnimationImplLocked()
}
};
VSyncWaiter vsync(mEventThread);
// the full animation is 12 frames
int nbFrames = 8;
s_curve_interpolator itr(nbFrames, 7.5f);
@ -2108,6 +2149,10 @@ status_t SurfaceFlinger::electronBeamOnAnimationImplLocked()
for (int i=nbFrames-1 ; i>=0 ; i--) {
const float v = itg(i);
hverts(vtx, v);
// wait for vsync
vsync.wait();
glClear(GL_COLOR_BUFFER_BIT);
glColor4f(1-v, 1-v, 1-v, 1);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
@ -2124,6 +2169,9 @@ status_t SurfaceFlinger::electronBeamOnAnimationImplLocked()
const float vg = itg(i);
const float vb = itb(i);
// wait for vsync
vsync.wait();
// clear screen
glColorMask(1,1,1,1);
glClear(GL_COLOR_BUFFER_BIT);