From fd8bec44abcd2758cacd910e499357156e2248b8 Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Wed, 25 May 2022 22:52:53 +0300
Subject: [PATCH] Compute & log max primitive count in ui painter

---
 libs/ui/source/painter_impl.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/libs/ui/source/painter_impl.cpp b/libs/ui/source/painter_impl.cpp
index 39fe3063..39d8b932 100644
--- a/libs/ui/source/painter_impl.cpp
+++ b/libs/ui/source/painter_impl.cpp
@@ -185,6 +185,7 @@ void main()
 		std::vector<std::variant<colored_batch, textured_batch, stencil_batch>> batches;
 
 		std::size_t max_batch_count = 0;
+		std::size_t max_primitive_count = 0;
 
 		template <typename Batch>
 		Batch & batch(Batch && n)
@@ -224,6 +225,7 @@ void main()
 	painter_impl::~painter_impl()
 	{
 		log::debug() << "UI painter max batch count: " << impl().max_batch_count;
+		log::debug() << "UI painter max primitive count: " << impl().max_primitive_count;
 	}
 
 	void painter_impl::draw_rect(geom::box<float, 2> const & rect, gfx::color_rgba const & color)
@@ -388,14 +390,21 @@ void main()
 
 		gl::ActiveTexture(gl::TEXTURE0);
 
+		std::size_t primitive_count = 0;
+
 		auto batch_visitor = util::overload(
 		[&](colored_batch const & b){
+			primitive_count += b.indices.size() / 3;
+
 			impl().colored_program.bind();
 			impl().colored_mesh.load(b.vertices, b.indices, gl::TRIANGLES);
 			impl().colored_mesh.draw();
 		},
 		[&](textured_batch const & b){
 			if (!b.texture) return;
+
+			primitive_count += b.indices.size() / 3;
+
 			gfx::program & program = (b.mode == ui::painter::color_mode::mix) ? impl().textured_mix_program : impl().textured_multiply_program;
 			program.bind();
 			program["u_texture_size"] = geom::cast<float>(b.texture->size());
@@ -437,6 +446,8 @@ void main()
 
 		impl().max_batch_count = std::max(impl().max_batch_count, impl().batches.size());
 
+		impl().max_primitive_count = std::max(impl().max_primitive_count, primitive_count);
+
 		impl().depth = 0;
 		impl().batches.clear();
 		impl().stencil_level = 0;