Instance count is wrong?

[SpiderPig]

In this example without any instances I have an instance count of 5, If I create an instance of the box that count goes up to 7, not 6.  Is this a bug or has it made more instances for the render thread and the world is tracking those too?

I need to know because another project of mine my tree model increases the instance count by 4 for each instance even though it's one model.     Just want to be sure if it's my model, or a bug, or a natural part of the engines workings.

#include "UltraEngine.h"
using namespace UltraEngine;


int main(int argc, const char* argv[])
{
    auto displays = GetDisplays();
    auto window = CreateWindow("Ultra Engine", 0, 0, 1440, 900, displays[0], WINDOW_CENTER | WINDOW_TITLEBAR);
    auto world = CreateWorld();
    world->RecordStats();
    auto framebuffer = CreateFramebuffer(window);

    //Create a camera
    auto camera = CreateCamera(world);
    camera->SetSweptCulling(true);
    camera->SetClearColor(0.125);
    camera->SetFov(70);
    camera->SetPosition(0, 0, -3);
    camera->SetRotation(0, 25, 0);

    auto font = LoadFont("Fonts/arial.ttf");
    auto ui = CreateInterface(world, font, framebuffer->size);
    ui->SetRenderLayers(2);
    ui->root->SetColor(0, 0, 0, 0);

    auto w_fps = CreateLabel("FPS : 0", 10, 10, 150, 30, ui->root);
    auto w_vertices = CreateLabel("Vertices : 0", 10, 30, 150, 30, ui->root);
    auto w_primitives = CreateLabel("Primitives : 0", 10, 50, 150, 30, ui->root);
    auto w_instances = CreateLabel("Instances : 0", 10, 70, 150, 30, ui->root);

    auto ui_cam = CreateCamera(world, PROJECTION_ORTHOGRAPHIC);
    ui_cam->SetPosition(framebuffer->size.x / 2, framebuffer->size.y / 2, 0);
    ui_cam->SetRenderLayers(2);
    ui_cam->SetClearMode(CLEAR_DEPTH);

    auto light = CreateDirectionalLight(world);
    light->SetRotation(35, 45, 0);
    light->SetRange(-10, 10);
    light->SetColor(5.0f);

    auto box = CreateBox(nullptr);

    //Comment out this line and instacne count is 5
    //Leave this line uncommented and the instacne count is 7
    auto inst = box->Instantiate(world);

    while (window->Closed() == false and window->KeyDown(KEY_ESCAPE) == false)
    {
        w_fps->SetText("FPS : " + WString(world->renderstats.framerate));
        w_vertices->SetText("Vertices : " + WString(world->renderstats.vertices));
        w_primitives->SetText("Primitives : " + WString(world->renderstats.polygons));
        w_instances->SetText("Instances : " + String(world->renderstats.instances));


        world->Update();
        world->Render(framebuffer, false);
    }

    return 0;
}

 

[klepto2]

If I remember correctly, the instance count measures the instances which get drawn in the current frame. In your case the instance increase might be 2 because 1 instance is rendered for the rendering and the other one is rendered for the shadowmap of the directional light. So in the stats you need to consider all render targets.

[Josh]

Try calling camera->SetDepthPrepass(false) and don't use any lights.