Add Renderable::preFrame for doing non-const frame prep work

In theory, this phase should be parallelisable before being pushed out
by the render loop.

1 files changed, 6 insertions, 0 deletions

diff --git a/ui/gameMainWindow.cpp b/ui/gameMainWindow.cpp
index dbbf8a7..eec5512 100644
--- a/ui/gameMainWindow.cpp
+++ b/ui/gameMainWindow.cpp
@@ -85,6 +85,12 @@ GameMainWindow::handleInput(const SDL_Event & event)
 void
 GameMainWindow::render()
 {
+	for (const auto & [assetId, asset] : gameState->assets) {
+		if (const auto renderable = asset.getAs<Renderable>()) {
+			renderable->preFrame(camera);
+		}
+	}
+	gameState->world.apply<const Renderable>(&Renderable::preFrame, camera);
 	SceneRenderer::render(*this);
 	glEnable(GL_BLEND);
 	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);