Method draw

samples/performance/constant_data/constant_data.cpp:400–440

}

void ConstantData::BufferArraySubpass::draw(vkb::core::CommandBufferC &command_buffer)
{
	auto &render_frame = get_render_context().get_active_frame();

	std::vector<MVPUniform> uniforms;

	// Update with all mvp scene data
	for (auto &mesh : get_meshes())
	{
		for (auto &node : mesh->get_nodes())
		{
			for (auto &submesh : mesh->get_submeshes())
			{
				uniforms.push_back(fill_mvp(*node, get_camera()));
			}
		}
	}

	auto allocation = render_frame.allocate_buffer(VK_BUFFER_USAGE_STORAGE_BUFFER_BIT, sizeof(MVPUniform) * uniforms.size());

	uint32_t offset = 0;
	for (size_t i = 0; i < uniforms.size(); ++i)
	{
		// Push 128 bytes of data
		allocation.update(uniforms[i].model, offset + 0);                    // Update bytes 0 - 63
		allocation.update(uniforms[i].camera_view_proj, offset + 64);        // Update bytes 64 - 127
		allocation.update(uniforms[i].scale, offset + 128);                  // Update bytes 128 - 191
		allocation.update(uniforms[i].padding, offset + 192);                // Update bytes 192 - 255
		offset += 256;
	}

	command_buffer.bind_buffer(allocation.get_buffer(), allocation.get_offset(), allocation.get_size(), 0, 1, 0);

	// Reset the instance index back to 0 for each draw call
	instance_index = 0;

	allocate_lights<vkb::ForwardLights>(get_scene().get_components<vkb::sg::Light>(), MAX_FORWARD_LIGHT_COUNT);
	command_buffer.bind_lighting(get_lighting_state(), 0, 4);

	GeometrySubpass::draw(command_buffer);
}

void ConstantData::BufferArraySubpass::update_uniform(vkb::core::CommandBufferC &command_buffer,
                                                      vkb::scene_graph::NodeC   &node,