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viewer: use internal texture to allow viewer to control texture as part of its

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context

More intuitive code flow and allows the user to undock the viewer (which
forcibly destroys and recreates the context) and the viewer will handle
creation of the new texture in said new context.
This commit is contained in:
itsmattkc
2020-02-16 18:24:49 +11:00
parent 21755c7f20
commit ceb70a1870
14 changed files with 116 additions and 227 deletions
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app/render/backend/opengl/openglbackend.cpp
-70
View File
@@ -7,7 +7,6 @@
OpenGLBackend::OpenGLBackend(QObject *parent) :
VideoRenderBackend(parent),
master_texture_(nullptr),
proxy_(nullptr)
{
}
@@ -49,17 +48,6 @@ bool OpenGLBackend::InitInternal()
connect(processor, &OpenGLWorker::RequestRunNodeAccelerated, proxy_, &OpenGLProxy::RunNodeAccelerated, Qt::BlockingQueuedConnection);
}
// Create master texture (the one sent to the viewer)
master_texture_ = std::make_shared<OpenGLTexture>();
master_texture_->Create(QOpenGLContext::currentContext(),
params().effective_width(),
params().effective_height(),
params().format());
// Create copy buffer/pipeline
copy_buffer_.Create(QOpenGLContext::currentContext());
copy_pipeline_ = OpenGLShader::CreateDefault();
return true;
}
@@ -70,25 +58,9 @@ void OpenGLBackend::CloseInternal()
proxy_ = nullptr;
}
copy_buffer_.Destroy();
copy_pipeline_ = nullptr;
master_texture_ = nullptr;
VideoRenderBackend::CloseInternal();
}
OpenGLTexturePtr OpenGLBackend::GetCachedFrameAsTexture(const rational &time)
{
const char* cached_frame = GetCachedFrame(time);
if (cached_frame) {
master_texture_->Upload(cached_frame);
return master_texture_;
}
return nullptr;
}
bool OpenGLBackend::CompileInternal()
{
return true;
@@ -98,52 +70,10 @@ void OpenGLBackend::DecompileInternal()
{
}
void OpenGLBackend::EmitCachedFrameReady(const rational &time, const QVariant &value, qint64 job_time)
{
OpenGLTextureCache::ReferencePtr ref = value.value<OpenGLTextureCache::ReferencePtr>();
OpenGLTexturePtr tex;
if (ref && ref->texture()) {
tex = CopyTexture(ref->texture());
} else {
tex = nullptr;
}
emit CachedFrameReady(time, QVariant::fromValue(tex), job_time);
}
void OpenGLBackend::ParamsChangedEvent()
{
// If we're initiated, we need to recreate the texture. Otherwise this backend isn't active so it doesn't matter.
if (IsInitiated()) {
master_texture_->Destroy();
master_texture_->Create(QOpenGLContext::currentContext(),
params().effective_width(),
params().effective_height(),
params().format());
proxy_->SetParameters(params());
}
}
OpenGLTexturePtr OpenGLBackend::CopyTexture(OpenGLTexturePtr input)
{
QOpenGLContext* ctx = QOpenGLContext::currentContext();
OpenGLTexturePtr copy = std::make_shared<OpenGLTexture>();
copy->Create(ctx, input->width(), input->height(), input->format());
ctx->functions()->glViewport(0, 0, input->width(), input->height());
copy_buffer_.Attach(copy);
copy_buffer_.Bind();
input->Bind();
OpenGLRenderFunctions::Blit(copy_pipeline_);
input->Release();
copy_buffer_.Release();
copy_buffer_.Detach();
return copy;
}