Repo created

qt/qt_common/qtoglcontextfactory.cpp

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+#include "qt/qt_common/qtoglcontextfactory.hpp"
+
+#include "base/assert.hpp"
+
+#include <memory>
+
+namespace qt
+{
+namespace common
+{
+QtOGLContextFactory::QtOGLContextFactory(QOpenGLContext * rootContext) : m_rootContext(rootContext)
+{
+  m_uploadSurface = CreateSurface();
+  m_drawSurface = CreateSurface();
+}
+
+QtOGLContextFactory::~QtOGLContextFactory()
+{
+  m_drawContext.reset();
+  m_uploadContext.reset();
+
+  m_drawSurface->destroy();
+  m_uploadSurface->destroy();
+}
+
+void QtOGLContextFactory::PrepareToShutdown()
+{
+  m_preparedToShutdown = true;
+}
+
+bool QtOGLContextFactory::AcquireFrame()
+{
+  if (m_preparedToShutdown || !m_drawContext)
+    return false;
+
+  return m_drawContext->AcquireFrame();
+}
+
+QRectF const & QtOGLContextFactory::GetTexRect() const
+{
+  ASSERT(m_drawContext != nullptr, ());
+  return m_drawContext->GetTexRect();
+}
+
+GLuint QtOGLContextFactory::GetTextureHandle() const
+{
+  ASSERT(m_drawContext != nullptr, ());
+  return m_drawContext->GetTextureHandle();
+}
+
+dp::GraphicsContext * QtOGLContextFactory::GetDrawContext()
+{
+  if (!m_drawContext)
+    m_drawContext = std::make_unique<QtRenderOGLContext>(m_rootContext, m_drawSurface.get());
+
+  return m_drawContext.get();
+}
+
+dp::GraphicsContext * QtOGLContextFactory::GetResourcesUploadContext()
+{
+  if (!m_uploadContext)
+    m_uploadContext = std::make_unique<QtUploadOGLContext>(m_rootContext, m_uploadSurface.get());
+
+  return m_uploadContext.get();
+}
+
+std::unique_ptr<QOffscreenSurface> QtOGLContextFactory::CreateSurface()
+{
+  QSurfaceFormat format = m_rootContext->format();
+  auto result = std::make_unique<QOffscreenSurface>(m_rootContext->screen());
+  result->setFormat(format);
+  result->create();
+  ASSERT(result->isValid(), ());
+
+  return result;
+}
+}  // namespace common
+}  // namespace qt