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Graphics Card Memory check before allocating FBO

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Improved warning when allocating FrameBuffer. Avoid allocating FrameBuffer when buffering delay in Clone Source if we risk to consume all RAM in graphics card.
This commit is contained in:
Bruno Herbelin
2022-04-16 12:42:18 +02:00
parent c043026764
commit 48b1bfaebd
4 changed files with 153 additions and 114 deletions
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52
CloneSource.cpp
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@@ -35,7 +35,7 @@ const char* CloneSource::cloning_provenance_label[2] = { "Original texture", "Po
CloneSource::CloneSource(Source *origin, uint64_t id) : Source(id), origin_(origin), cloningsurface_(nullptr),
to_delete_(nullptr), delay_(0.0), paused_(false), provenance_(CLONE_TEXTURE)
garbage_image_(nullptr), delay_(0.0), paused_(false), provenance_(CLONE_TEXTURE)
{
// initial name copies the origin name: diplucates are namanged in session
name_ = origin->name();
@@ -152,18 +152,19 @@ void CloneSource::update(float dt)
if (!paused_ && cloningsurface_ != nullptr) {
// if temporary FBO was pending to be deleted, delete it now
if (to_delete_ != nullptr) {
delete to_delete_;
to_delete_ = nullptr;
if (garbage_image_ != nullptr) {
delete garbage_image_;
garbage_image_ = nullptr;
}
// What time is it?
double now = g_timer_elapsed (timer_, NULL);
// is the total buffer of images longer than delay ?
if ( !images_.empty() && now - elapsed_.front() > delay_ ) {
if ( !images_.empty() && now - elapsed_.front() > delay_ )
{
// remember FBO to be reused if needed (see below) or deleted later
to_delete_ = images_.front();
garbage_image_ = images_.front();
// remove element from queue (front)
images_.pop();
elapsed_.pop();
@@ -171,16 +172,24 @@ void CloneSource::update(float dt)
}
// add image to queue to accumulate buffer images until delay reached
if ( images_.empty() || now - elapsed_.front() < delay_ + (dt * 0.001) ) {
// create a FBO if none can be reused (from above)
if (to_delete_ == nullptr)
to_delete_ = new FrameBuffer( origin_->frame()->resolution(), origin_->frame()->use_alpha() );
// add element to queue (back)
images_.push( to_delete_ );
elapsed_.push( now );
timestamps_.push( origin_->playtime() );
// to_delete_ FBO is now used, should not be deleted
to_delete_ = nullptr;
if ( images_.empty() || now - elapsed_.front() < delay_ + (dt * 0.001) )
{
// create a FBO if none can be reused (from above) and test for RAM in GPU
if (garbage_image_ == nullptr && ( images_.empty() || FrameBuffer::shouldHaveEnoughMemory(origin_->frame()->resolution(), origin_->frame()->use_alpha()) ) )
garbage_image_ = new FrameBuffer( origin_->frame()->resolution(), origin_->frame()->use_alpha() );
// no image available
if (garbage_image_ != nullptr) {
// add element to queue (back)
images_.push( garbage_image_ );
elapsed_.push( now );
timestamps_.push( origin_->playtime() );
// garbage_image_ FBO is now used, it should not be deleted
garbage_image_ = nullptr;
}
else {
delay_ = now - elapsed_.front() - (dt * 0.001);
Log::Warning("Cannot satisfy delay for Clone %s: not enough RAM in graphics card.", name_.c_str());
}
}
// CLONE_RENDER : blit rendered framebuffer in the newest image (back)
@@ -232,16 +241,17 @@ bool CloneSource::playable () const
void CloneSource::replay()
{
// clear to_delete_ FBO if pending
if (to_delete_ != nullptr) {
delete to_delete_;
to_delete_ = nullptr;
if (garbage_image_ != nullptr) {
g_printerr(" REPLAY delete garbage %d \n", garbage_image_->opengl_id());
delete garbage_image_;
garbage_image_ = nullptr;
}
// remove all images except the one in the back (newest)
while (images_.size() > 1) {
// do not delete immediately the (oldest) front image (the FBO is currently displayed)
if (to_delete_ == nullptr)
to_delete_ = images_.front();
if (garbage_image_ == nullptr)
garbage_image_ = images_.front();
// delete other FBO (unused)
else if (images_.front() != nullptr)
delete images_.front();