1 files changed, 19 insertions, 0 deletions
diff --git a/renderer.cpp b/renderer.cpp
index c7040ec..64c3795 100644
--- a/renderer.cpp
+++ b/renderer.cpp
@@ -5,6 +5,8 @@ extern "C" {
 #include "memory.h"
 }
 
+#include <algorithm>
+
 struct VP_Cbuffer {
 	m4f view_projection;
 };
@@ -91,6 +93,21 @@ void Drawlist::render(
 	}
 }
 
+void Drawlist::sort(const Renderer& r) {
+	const Camera& cam = r.get_camera(camera);
+	v3f far = cam.position + cam.far * cam.forward;
+	/* ideally want to sort the meshes within each model as
+	 * well but as long as the models are small it wont matter
+	 * too much... */
+	std::sort(
+		models,
+		models + count,
+		[&far](const Model_Instance* a, const Model_Instance* b) {
+			return v3f::dot(a->centre, far) < v3f::dot(b->centre, far);
+		}
+	);
+}
+
 void Renderer::update_globals(
 	const Lighting* l,
 	Device* d,
@@ -136,6 +153,8 @@ void Renderer::render(
 			.build_rp();
 	}
 
+	drawlists[FORWARD].sort(*this);
+
 	ctx.debug_push("depth prepass");
 	drawlists[FORWARD].render(*this, dev, a, l, depth_prepass, 0);
 	ctx.debug_pop();