Added shaders library

2 files changed, 71 insertions, 17 deletions

diff --git a/qt_tstfrm/test_main_loop.cpp b/qt_tstfrm/test_main_loop.cpp
index cfd37fdb98..961a4fff7a 100644
--- a/qt_tstfrm/test_main_loop.cpp
+++ b/qt_tstfrm/test_main_loop.cpp
@@ -3,38 +3,38 @@
 #include <QtCore/QTimer>
 #include <QtWidgets/QApplication>
 #include <QtWidgets/QWidget>
+#include <QtGui/QOffscreenSurface>
+#include <QtGui/QOpenGLContext>
 
 #include "base/scope_guard.hpp"
 
-#include "std/cstring.hpp"
+#include <cstring>
+#include <memory>
 
 namespace
 {
-
 class MyWidget : public QWidget
 {
 public:
-  MyWidget(TRednerFn const & fn)
-    : m_fn(fn)
-  {
-  }
+  explicit MyWidget(RenderFunction && fn)
+    : m_fn(std::move(fn))
+  {}
 
 protected:
-  void paintEvent(QPaintEvent * e)
+  void paintEvent(QPaintEvent * e) override
   {
     m_fn(this);
   }
 
 private:
-  TRednerFn m_fn;
+  RenderFunction m_fn;
 };
+}  // namespace
 
-} // namespace
-
-void RunTestLoop(char const * testName, TRednerFn const & fn, bool autoExit)
+void RunTestLoop(char const * testName, RenderFunction && fn, bool autoExit)
 {
-  char * buf = (char *)malloc(strlen(testName) + 1);
-  MY_SCOPE_GUARD(argvFreeFun, [&buf](){ free(buf); });
+  auto buf = new char[strlen(testName) + 1];
+  MY_SCOPE_GUARD(argvFreeFun, [&buf](){ delete [] buf; });
   strcpy(buf, testName);
 
   int argc = 1;
@@ -42,10 +42,60 @@ void RunTestLoop(char const * testName, TRednerFn const & fn, bool autoExit)
   if (autoExit)
     QTimer::singleShot(3000, &app, SLOT(quit()));
 
-  MyWidget * widget = new MyWidget(fn);
+  auto widget = new MyWidget(std::move(fn));
   widget->setWindowTitle(testName);
   widget->show();
 
   app.exec();
   delete widget;
 }
+
+void RunTestInOpenGLOffscreenEnvironment(char const * testName, bool apiOpenGLES3,
+                                         TestFunction const & fn)
+{
+  auto buf = new char[strlen(testName) + 1];
+  MY_SCOPE_GUARD(argvFreeFun, [&buf](){ delete [] buf; });
+  strcpy(buf, testName);
+
+  int argc = 1;
+  QApplication app(argc, &buf);
+
+  QSurfaceFormat fmt;
+  fmt.setAlphaBufferSize(8);
+  fmt.setBlueBufferSize(8);
+  fmt.setGreenBufferSize(8);
+  fmt.setRedBufferSize(8);
+  fmt.setStencilBufferSize(0);
+  fmt.setSamples(0);
+  fmt.setSwapBehavior(QSurfaceFormat::DoubleBuffer);
+  fmt.setSwapInterval(1);
+  fmt.setDepthBufferSize(16);
+  if (apiOpenGLES3)
+  {
+    fmt.setProfile(QSurfaceFormat::CoreProfile);
+    fmt.setVersion(3, 2);
+  }
+  else
+  {
+    fmt.setProfile(QSurfaceFormat::CompatibilityProfile);
+    fmt.setVersion(2, 1);
+  }
+
+  auto surface = std::make_unique<QOffscreenSurface>();
+  surface->setFormat(fmt);
+  surface->create();
+
+  auto context = std::make_unique<QOpenGLContext>();
+  context->setFormat(fmt);
+  context->create();
+  context->makeCurrent(surface.get());
+
+  if (fn)
+    fn(apiOpenGLES3);
+
+  context->doneCurrent();
+  surface->destroy();
+
+  QTimer::singleShot(0, &app, SLOT(quit()));
+  app.exec();
+}
diff --git a/qt_tstfrm/test_main_loop.hpp b/qt_tstfrm/test_main_loop.hpp
index db102c218e..00c330e50e 100644
--- a/qt_tstfrm/test_main_loop.hpp
+++ b/qt_tstfrm/test_main_loop.hpp
@@ -1,7 +1,11 @@
 #pragma once
 
-#include "std/function.hpp"
+#include <functional>
 
 class QPaintDevice;
-typedef function<void (QPaintDevice *)> TRednerFn;
-void RunTestLoop(char const * testName, TRednerFn const & fn, bool autoExit = true);
+using RenderFunction = std::function<void (QPaintDevice *)>;
+using TestFunction = std::function<void (bool apiOpenGLES3)>;
+
+extern void RunTestLoop(char const * testName, RenderFunction && fn, bool autoExit = true);
+
+extern void RunTestInOpenGLOffscreenEnvironment(char const * testName, bool apiOpenGLES3, TestFunction const & fn);