Refactor render-test to make cross platform (#1053)

* First pass of render-test refactor.

* Make window construction a function that can choose an implementation.

* Remove OpenGL as currently has windows dependency.

* Disable Vulkan as Renderer impl has dependency on windows.

* Pass Window in as parameter of 'update'.

* Add win-window.cpp as was missing.

* Fix warning on windows about signs during comparison.

1 files changed, 21 insertions, 0 deletions

diff --git a/tools/render-test/window.cpp b/tools/render-test/window.cpp
new file mode 100644
index 000000000..0ab4ff412
--- /dev/null
+++ b/tools/render-test/window.cpp
@@ -0,0 +1,21 @@
+// window.cpp
+
+#include "window.h"
+
+namespace renderer_test {
+using namespace Slang;
+
+#if SLANG_WINDOWS_FAMILY
+extern Window* createWinWindow();
+#endif
+
+/* static */Window* Window::create()
+{
+#if SLANG_WINDOWS_FAMILY
+    return createWinWindow();
+#else
+    return nullptr;
+#endif
+}
+
+} // renderer_test