// Note: this need to be called within the lock and on the UI thread.
// Only called by updateDirtyTiles() and emptyQueue() for now
void TransferQueue::cleanupPendingDiscard()
{
int index = getNextTransferQueueIndex();
for (int i = 0 ; i < m_transferQueueSize; i++) {
if (m_transferQueue[index].status == pendingDiscard) {
// No matter what the current upload type is, as long as there has
// been a Surf Tex enqueue operation, this updateTexImage need to
// be called to keep things in sync.
if (m_transferQueue[index].uploadType == GpuUpload) {
status_t result = m_sharedSurfaceTexture->updateTexImage();
if (result != OK)
ALOGE("unexpected error: updateTexImage return %d", result);
}
// since tiles in the queue may be from another webview, remove
// their textures so that they will be repainted / retransferred
Tile* tile = m_transferQueue[index].savedTilePtr;
TileTexture* texture = m_transferQueue[index].savedTileTexturePtr;
if (tile && texture && texture->owner() == tile) {
// since tile destruction removes textures on the UI thread, the
// texture->owner ptr guarantees the tile is valid
tile->discardBackTexture();
ALOGV("transfer queue discarded tile %p, removed texture", tile);
}
clearItemInTranferQueue(index);
}
index = (index + 1) % m_transferQueueSize;
}
}
// This function must be called inside the m_transferQueueItemLocks, for the
// wait, m_interruptedByRemovingOp and getHasGLContext().
// Only called by updateQueueWithBitmap() for now.
bool TransferQueue::readyForUpdate()
{
if (!getHasGLContext())
return false;
// Don't use a while loop since when the WebView tear down, the emptyCount
// will still be 0, and we bailed out b/c of GL context lost.
if (!m_emptyItemCount) {
if (m_interruptedByRemovingOp)
return false;
m_transferQueueItemCond.wait(m_transferQueueItemLocks);
if (m_interruptedByRemovingOp)
return false;
}
if (!getHasGLContext())
return false;
// Disable this wait until we figure out why this didn't work on some
// drivers b/5332112.
#if 0
if (m_currentUploadType == GpuUpload
&& m_currentDisplay != EGL_NO_DISPLAY) {
// Check the GPU fence
EGLSyncKHR syncKHR = m_transferQueue[getNextTransferQueueIndex()].m_syncKHR;
if (syncKHR != EGL_NO_SYNC_KHR)
eglClientWaitSyncKHR(m_currentDisplay,
syncKHR,
EGL_SYNC_FLUSH_COMMANDS_BIT_KHR,
EGL_FOREVER_KHR);
}
GLUtils::checkEglError("WaitSyncKHR");
#endif
return true;
}
// Call on UI thread to copy from the shared Surface Texture to the Tile's texture.
void TransferQueue::updateDirtyTiles()
{
android::Mutex::Autolock lock(m_transferQueueItemLocks);
cleanupPendingDiscard();
if (!getHasGLContext())
setHasGLContext(true);
// Check the pure color tile first, since it is simpler.
updatePureColorTiles();
// Start from the oldest item, we call the updateTexImage to retrive
// the texture and blit that into each Tile's texture.
const int nextItemIndex = getNextTransferQueueIndex();
int index = nextItemIndex;
bool usedFboForUpload = false;
for (int k = 0; k < m_transferQueueSize ; k++) {
if (m_transferQueue[index].status == pendingBlit) {
bool obsoleteTile = checkObsolete(&m_transferQueue[index]);
// Save the needed info, update the Surf Tex, clean up the item in
// the queue. Then either move on to next item or copy the content.
TileTexture* destTexture = 0;
if (!obsoleteTile)
destTexture = m_transferQueue[index].savedTilePtr->backTexture();
if (m_transferQueue[index].uploadType == GpuUpload) {
status_t result = m_sharedSurfaceTexture->updateTexImage();
if (result != OK)
ALOGE("unexpected error: updateTexImage return %d", result);
}
if (obsoleteTile) {
ALOGV("Warning: the texture is obsolete for this baseTile");
clearItemInTranferQueue(index);
index = (index + 1) % m_transferQueueSize;
continue;
}
// guarantee that we have a texture to blit into
destTexture->requireGLTexture();
GLUtils::checkGlError("before blitTileFromQueue");
if (m_transferQueue[index].uploadType == CpuUpload) {
// Here we just need to upload the bitmap content to the GL Texture
GLUtils::updateTextureWithBitmap(destTexture->m_ownTextureId,
*m_transferQueue[index].bitmap);
} else {
if (!usedFboForUpload) {
saveGLState();
usedFboForUpload = true;
}
blitTileFromQueue(m_fboID, destTexture, m_sharedSurfaceTextureId,
m_sharedSurfaceTexture->getCurrentTextureTarget(),
index);
}
destTexture->setPure(false);
destTexture->transferComplete();
clearItemInTranferQueue(index);
ALOGV("Blit tile x, y %d %d with dest texture %p to destTexture->m_ownTextureId %d",
m_transferQueue[index].savedTilePtr,
destTexture,
destTexture->m_ownTextureId);
}
index = (index + 1) % m_transferQueueSize;
}
// Clean up FBO setup. Doing this for both CPU/GPU upload can make the
// dynamic switch possible. Moving this out from the loop can save some
// milli-seconds.
if (usedFboForUpload) {
restoreGLState();
GLUtils::checkGlError("updateDirtyTiles");
}
m_emptyItemCount = m_transferQueueSize;
m_transferQueueItemCond.signal();
}
// Call on UI thread to copy from the shared Surface Texture to the BaseTile's texture.
void TransferQueue::updateDirtyBaseTiles()
{
android::Mutex::Autolock lock(m_transferQueueItemLocks);
cleanupTransportQueue();
if (!getHasGLContext())
setHasGLContext(true);
// Start from the oldest item, we call the updateTexImage to retrive
// the texture and blit that into each BaseTile's texture.
const int nextItemIndex = getNextTransferQueueIndex();
int index = nextItemIndex;
bool usedFboForUpload = false;
for (int k = 0; k < ST_BUFFER_NUMBER ; k++) {
if (m_transferQueue[index].status == pendingBlit) {
bool obsoleteBaseTile = checkObsolete(index);
// Save the needed info, update the Surf Tex, clean up the item in
// the queue. Then either move on to next item or copy the content.
BaseTileTexture* destTexture = 0;
if (!obsoleteBaseTile)
destTexture = m_transferQueue[index].savedBaseTilePtr->backTexture();
if (m_transferQueue[index].uploadType == GpuUpload) {
status_t result = m_sharedSurfaceTexture->updateTexImage();
if (result != OK)
XLOGC("unexpected error: updateTexImage return %d", result);
}
m_transferQueue[index].savedBaseTilePtr = 0;
m_transferQueue[index].status = emptyItem;
if (obsoleteBaseTile) {
XLOG("Warning: the texture is obsolete for this baseTile");
index = (index + 1) % ST_BUFFER_NUMBER;
continue;
}
// guarantee that we have a texture to blit into
destTexture->requireGLTexture();
if (m_transferQueue[index].uploadType == CpuUpload) {
// Here we just need to upload the bitmap content to the GL Texture
GLUtils::updateTextureWithBitmap(destTexture->m_ownTextureId, 0, 0,
*m_transferQueue[index].bitmap);
} else {
if (!usedFboForUpload) {
saveGLState();
usedFboForUpload = true;
}
blitTileFromQueue(m_fboID, destTexture,
m_sharedSurfaceTextureId,
m_sharedSurfaceTexture->getCurrentTextureTarget(),
index);
}
// After the base tile copied into the GL texture, we need to
// update the texture's info such that at draw time, readyFor
// will find the latest texture's info
// We don't need a map any more, each texture contains its own
// texturesTileInfo.
destTexture->setOwnTextureTileInfoFromQueue(&m_transferQueue[index].tileInfo);
XLOG("Blit tile x, y %d %d with dest texture %p to destTexture->m_ownTextureId %d",
m_transferQueue[index].tileInfo.m_x,
m_transferQueue[index].tileInfo.m_y,
destTexture,
destTexture->m_ownTextureId);
}
index = (index + 1) % ST_BUFFER_NUMBER;
}
// Clean up FBO setup. Doing this for both CPU/GPU upload can make the
// dynamic switch possible. Moving this out from the loop can save some
// milli-seconds.
if (usedFboForUpload) {
glBindFramebuffer(GL_FRAMEBUFFER, 0); // rebind the standard FBO
restoreGLState();
GLUtils::checkGlError("updateDirtyBaseTiles");
}
m_emptyItemCount = ST_BUFFER_NUMBER;
m_transferQueueItemCond.signal();
}