Improve Terrain::generateMeshes performanceHEADmain

Creates mesh per surface based on a single buffer of all vertices and a collection of per surfuce indices.
Makes ColourBias a uniform instead of a vertex attribute.

1 files changed, 20 insertions, 0 deletions

diff --git a/test/perf-terrain.cpp b/test/perf-terrain.cpp
new file mode 100644
index 0000000..dbd44fa
--- /dev/null
+++ b/test/perf-terrain.cpp
@@ -0,0 +1,20 @@
+#include "game/terrain.h"
+#include "testMainWindow.h"
+#include <benchmark/benchmark.h>
+
+namespace {
+	void
+	terrainMeshgen(benchmark::State & state)
+	{
+		TestMainWindowAppBase window;
+		Terrain terrain {GeoData::loadFromAsciiGrid(FIXTURESDIR "height/SD19.asc")};
+
+		for (auto _ : state) {
+			terrain.generateMeshes();
+		}
+	}
+}
+
+BENCHMARK(terrainMeshgen);
+
+BENCHMARK_MAIN();