Added gui_util

src/frontend/hud.cpp

@@ -239,7 +239,7 @@ void HudRenderer::drawContentAccess(const GfxContext& ctx, Player* player) {
 	batch->render();
 
 	// blocks & items
-	blocksPreview->begin();
+	blocksPreview->begin(&ctx.getViewport());
 	{
 		Window::clearDepth();
 		GfxContext subctx = ctx.sub();
@@ -328,7 +328,7 @@ void HudRenderer::draw(const GfxContext& ctx){
 	batch->color = vec4(1.0f);
 	batch->render();
 
-	blocksPreview->begin();
+	blocksPreview->begin(&ctx.getViewport());
 	{
 		Window::clearDepth();
 		GfxContext subctx = ctx.sub();