Ultra Engine testing

SpiderPig · December 27, 2022

On a different note, I'm trying to setup a different world to render to a sprite but am getting nothing but a black sprite. I can get it to render when using just one world for everything, but not creating a new world. This is what I have so far. (I have a gui_camera setup and working on renderlayer_1)

world = CreateWorld();

light = CreateDirectionalLight(world);

render_target = CreateTextureBuffer(512, 512);

camera = CreateCamera(world);
camera->SetClearColor(1, 0, 0);
camera->SetRenderTarget(render_target);
camera->Move(0, 0, -5);

material = CreateMaterial();
material->SetTexture(render_target->GetColorAttachment());

sprite = CreateSprite(sprite_world, 512, 512);
sprite->SetRenderLayers(RENDERLAYER_1);
sprite->SetMaterial(material);

box = CreateBox(world);

reepblue · December 28, 2022

1 hour ago, SpiderPig said:

On a different note, I'm trying to setup a different world to render to a sprite but am getting nothing but a black sprite. I can get it to render when using just one world for everything, but not creating a new world. This is what I have so far. (I have a gui_camera setup and working on renderlayer_1)

I couldn't get a sprite with a material to show at all on a different layer. CreateSprite() works fine, but using LoadSprite or changing it's material to anything causes it to go invisible.

Example:

#include "UltraEngine.h"
#include "ComponentSystem.h"

using namespace UltraEngine;

int main(int argc, const char* argv[])
{
    //Get the displays
    auto displays = GetDisplays();

    //Create a window
    auto window = CreateWindow("Ultra Engine", 0, 0, 1280, 720, displays[0], WINDOW_CENTER | WINDOW_TITLEBAR);

    //Create framebuffer
    auto framebuffer = CreateFramebuffer(window);

    //Create world
    auto world = CreateWorld();

    //Create camera
    auto camera = CreateCamera(world, PROJECTION_ORTHOGRAPHIC);
    camera->SetClearColor(0.125);

    //Create a ortho camera
    auto camera2D = CreateCamera(world, UltraEngine::PROJECTION_ORTHOGRAPHIC);
    camera2D->SetDepthPrepass(false);
    camera2D->SetClearMode(UltraEngine::CLEAR_DEPTH);
    camera2D->SetRenderLayers(UltraEngine::RENDERLAYER_7);
    camera2D->SetPosition((float)framebuffer->size.x * 0.5f, (float)framebuffer->size.y * 0.5f, 0);

    //Create sprite
    auto sprite = LoadSprite(world, "https://raw.githubusercontent.com/UltraEngine/Documentation/master/Assets/Materials/Sprites/nightraider.dds");
    sprite->SetPosition(0, 0);
    sprite->mesh->material->SetAlphaMask(true);
    
    // I should appear in the bottom left corner but I don't.
    sprite->SetRenderLayers(UltraEngine::RENDERLAYER_7);

    //Main loop
    while (window->Closed() == false and window->KeyHit(KEY_ESCAPE) == false)
    {
        world->Update();
        world->Render(framebuffer);
    }
    return 0;
}

On 12/26/2022 at 7:05 AM, Josh said:

You must add the following search header path to your existing projects: "$(UltraEnginePath)\Include\Libraries\zlib"

I created a new project and I had to manually do this myself. Please update.

The good news is that this works as expected now.

#include "UltraEngine.h"
#include "ComponentSystem.h"

using namespace UltraEngine;

int main(int argc, const char* argv[])
{
    //Get the displays
    auto displays = GetDisplays();

    //Create a window
    auto window = CreateWindow("Ultra Engine", 0, 0, 1280, 720, displays[0], WINDOW_CENTER | WINDOW_TITLEBAR);

    //Create framebuffer
    auto framebuffer = CreateFramebuffer(window);

    //Create world
    auto world = CreateWorld();

    //Create camera
    auto camera = CreateCamera(world, PROJECTION_ORTHOGRAPHIC);
    camera->SetClearColor(0.5);

    //Create a ortho camera
    auto camera2D = CreateCamera(world, UltraEngine::PROJECTION_ORTHOGRAPHIC);
    camera2D->SetDepthPrepass(false);
    camera2D->SetClearMode(UltraEngine::CLEAR_DEPTH);
    camera2D->SetRenderLayers(UltraEngine::RENDERLAYER_7);
    camera2D->SetPosition((float)framebuffer->size.x * 0.5f, (float)framebuffer->size.y * 0.5f, 0);

    // Create Text DropShadow;
    auto font = LoadFont("Fonts/arial.ttf");
    auto text_dropshadow = CreateSprite(world, font, "Hello World!", 128);
    text_dropshadow->SetRenderLayers(UltraEngine::RENDERLAYER_7);

    // The Z position should push this back.
    text_dropshadow->SetPosition(4 + 2, 4 - 2, 1.0f);

    // Color me black
    text_dropshadow->SetColor(0.0f, 0.0f, 0.0f, 1.0f);

    // Create Text
    auto text = text_dropshadow->Instantiate(world)->As<UltraEngine::Sprite>();
    text->SetPosition(4, 4, 0.0f);
    text->SetColor(1.0f, 1.0f, 1.0f, 1.0f);

    //Main loop
    while (window->Closed() == false and window->KeyHit(KEY_ESCAPE) == false)
    {
        static bool bSwap = false;
        if (window->KeyHit(KEY_SPACE))
        {
            if (bSwap)
            {
                Print("Push drop shadow back!");
                text_dropshadow->SetPosition(4 + 2, 4 - 2, 1.0f);
                text->SetPosition(4, 4, 0.0f);
            }
            else
            {
                Print("Bring drop shadow forward!");
                text_dropshadow->SetPosition(4 + 2, 4 - 2, -1.0f);
                text->SetPosition(4, 4, 0.0f);
               
            }

            bSwap = !bSwap;
        }

        world->Update();
        world->Render(framebuffer);
    }
    return 0;
}

SpiderPig · December 28, 2022

7 hours ago, Josh said:

Update

Adjusted depth settings in transparency pass

UTF-8 string conversion back to wide string no longer supported because it's unreliable

I noticed since this update Josh did you don't have to call "SetDepthPrepass(false)". If you comment that out your example will work.

Perhaps this isn't working as it should though?

reepblue · December 28, 2022

This example shows UI not updating properly or I'm doing it wrong. Either way, the list box stops working properly.

Also, just want to bring up that the UI is still drawing ugly in 3D. This means I have to wait to work on game UI until this is fixed.

#include "UltraEngine.h"
#include "ComponentSystem.h"

using namespace UltraEngine;

int main(int argc, const char* argv[])
{
    //Get the displays
    auto displays = GetDisplays();

    //Create a window
    auto window = CreateWindow("Ultra Engine", 0, 0, 1280, 720, displays[0], WINDOW_CENTER | WINDOW_TITLEBAR);

    //Create a world
    auto world = CreateWorld();

    //Create a framebuffer
    auto framebuffer = CreateFramebuffer(window);

    //Create a camera
    auto camera = CreateCamera(world);
    camera->SetClearColor(0.125);
    camera->SetFov(70);
    camera->SetPosition(0, 0, -3);
    camera->SetViewport(200, 0, framebuffer->size.x - 200, framebuffer->size.y);

    auto uiCamera = CreateCamera(world, PROJECTION_ORTHOGRAPHIC);
    uiCamera->SetRenderLayers(RENDERLAYER_1);
    uiCamera->SetClearMode(CLEAR_DEPTH);
    uiCamera->SetPosition(framebuffer->size.x / 2, framebuffer->size.y / 2);
    auto ui = CreateInterface(world, LoadFont("Fonts/arial.ttf"), iVec2(200, framebuffer->size.y));
    ui->SetRenderLayers(RENDERLAYER_1);

    auto sz = ui->root->ClientSize();
    auto listbox = CreateListBox(5, 5, sz.x - 10, 200, ui->root, LISTBOX_DEFAULT)->As<ListBox>();
    auto tabber = CreateTabber(5, 205, sz.x - 10, sz.y - 205, ui->root)->As<Tabber>();
    tabber->AddItem("Settings", true);
    tabber->AddItem("Output");

    for (int i = 0; i < 100; i++)
    {
        listbox->AddItem("Item " + String(i));
    }

    //Create a light
    auto light = CreateBoxLight(world);
    light->SetRotation(35, 45, 0);
    light->SetRange(-10, 10);

    //Create a box
    auto box = CreateBox(world);
    box->SetColor(0, 0, 1);

    //Entity component system
    auto actor = CreateActor(box);
    auto component = actor->AddComponent<Mover>();
    component->rotation.y = 45;

    //Main loop
    while (window->Closed() == false and window->KeyDown(KEY_ESCAPE) == false)
    {
        if (PeekEvent())
        {
            auto ev = WaitEvent();
            ui->ProcessEvent(ev);

            switch (ev.id)
            {
            case UltraEngine::EVENT_WINDOWCLOSE:
                if (ev.source == window) exit(0);
                break;

            default: 
                break;
            }
        }

        // Rebuild the window.
        if (window->KeyDown(KEY_SPACE))
        {
            static bool bSwapped = false;
            framebuffer = NULL;
            window = NULL;

            if (!bSwapped)
            {
                // Make it a tad bigger
                window = CreateWindow("Ultra Engine", 0, 0, 1400, 800, displays[0], WINDOW_CENTER | WINDOW_TITLEBAR);
                framebuffer = CreateFramebuffer(window);
            }
            else
            {
                window = CreateWindow("Ultra Engine", 0, 0, 1280, 720, displays[0], WINDOW_CENTER | WINDOW_TITLEBAR);
                framebuffer = CreateFramebuffer(window);
            }

            // Reposition the camera.
            uiCamera->SetPosition(framebuffer->size.x / 2, framebuffer->size.y / 2);

            // Resize the ui (Am I doing this right??)
            ui->Redraw(0, 0, framebuffer->size.x, framebuffer->size.y);
            ui->UpdateLayout();

            bSwapped = !bSwapped;
        }

        world->Update();
        if (framebuffer) world->Render(framebuffer);
    }
    return 0;
}

SpiderPig · December 28, 2022

Here's an example for my post earlier. Rendering to a texture doesn't work from a second world. Not sure if I've set it up correctly though or if it's supposed to work yet. I've tried updating the second world in the main loop as well as rendering to a second framebuffer but creating a second framebuffer will crash the program.

If you uncomment the line below and use the first world the example works as expected.

#include "UltraEngine.h"
#include "ComponentSystem.h"


using namespace UltraEngine;


int main(int argc, const char* argv[])
{
    auto displays = GetDisplays();
    auto window = CreateWindow("Ultra Engine", 0, 0, 1280, 720, displays[0], WINDOW_CENTER | WINDOW_TITLEBAR);
    auto world = CreateWorld();

    auto framebuffer = CreateFramebuffer(window);

    auto camera = CreateCamera(world);
    camera->SetClearColor(0.125);
    camera->SetFov(70);
    camera->SetPosition(0, 2, -3);

    auto font = LoadFont("Fonts/arial.ttf");
    auto ui = CreateInterface(world, font, framebuffer->size);
    ui->SetRenderLayers(RENDERLAYER_1);
    ui->root->SetColor(0, 0, 0, 0);

    auto ui_cam = CreateCamera(world, PROJECTION_ORTHOGRAPHIC);
    ui_cam->SetPosition(framebuffer->size.x / 2, framebuffer->size.y / 2, 0);
    ui_cam->SetRenderLayers(RENDERLAYER_1);
    ui_cam->SetClearMode(CLEAR_DEPTH);


    auto world2 = CreateWorld();
    //world2 = world;
    auto tex_buffer = CreateTextureBuffer(256, 256);
    auto cam2 = CreateCamera(world2);
    cam2->SetClearColor(1, 0, 0);
    cam2->SetRenderTarget(tex_buffer);
    cam2->Move(0, 0, -5);
    auto light2 = CreateDirectionalLight(world2);
    auto box2 = CreateBox(world2);

    auto mat = CreateMaterial();
    mat->SetTexture(tex_buffer->GetColorAttachment());

    auto sprite = CreateSprite(world, 256, 256);
    sprite->SetRenderLayers(RENDERLAYER_1);
    sprite->SetMaterial(mat);


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

    auto floor = CreateBox(world, 1000.0f, 0.1f, 1000.0f);

    while (window->Closed() == false and window->KeyDown(KEY_ESCAPE) == false)
    {
        world->Update();
        world->Render(framebuffer);
    }
    return 0;
}

Josh · December 28, 2022

4 hours ago, SpiderPig said:

I wonder if you should change SetRenderLayers() to SetRenderLayer()? Seeing as we're assigning the object to a specific layer it might make more sense.

The render layers are a bitwise flag. You can assign multiple layers to the drawn object or the camera, and if they have a value in common then the camera draws that entity.

reepblue · December 28, 2022

2 hours ago, SpiderPig said:

I noticed since this update Josh did you don't have to call "SetDepthPrepass(false)". If you comment that out your example will work.

Just found out my shadow text example breaks if SetDepthPrepass isn't set to false. The render layer I'm using is only meant for text so it's not a huge deal but something to note.

reepblue · December 28, 2022

Also, speaking of layers, how would one blend 2 perspective cameras in one image. An example would be drawing a first-person view model on Layer 1 so it can have its own FOV settings and not be obstructed by anything.

Here's what I tried. I expected the blue spin box to have a red cube being rendered on top of it, but I only see the red cube.

#include "UltraEngine.h"
#include "ComponentSystem.h"

using namespace UltraEngine;

int main(int argc, const char* argv[])
{
    //Get the displays
    auto displays = GetDisplays();

    //Create a window
    auto window = CreateWindow("Ultra Engine", 0, 0, 1280, 720, displays[0], WINDOW_CENTER | WINDOW_TITLEBAR);

    //Create framebuffer
    auto framebuffer = CreateFramebuffer(window);

    //Create world
    auto world = CreateWorld();

    //Create camera
    auto camera = CreateCamera(world, PROJECTION_ORTHOGRAPHIC);
    camera->SetClearColor(0.125);
    camera->SetFov(70);
    camera->SetPosition(0, 0, -3);

    //Create a light
    auto light = CreateBoxLight(world);
    light->SetRotation(35, 45, 0);
    light->SetRange(-10, 10);

    //Create a box
    auto box = CreateBox(world);
    box->SetColor(0, 0, 1);

    //Entity component system
    auto actor = CreateActor(box);
    auto component = actor->AddComponent<Mover>();
    component->rotation.y = 45;

    //Create a view model camera
    auto cameraviewmodel = CreateCamera(world);
    cameraviewmodel->SetFov(70);
    cameraviewmodel->SetMatrix(camera->GetMatrix());
    cameraviewmodel->SetClearMode(UltraEngine::CLEAR_DEPTH);
    cameraviewmodel->SetRenderLayers(UltraEngine::RENDERLAYER_1);

    auto viewmodel = CreateBox(world, 0.5f);
    viewmodel->SetRenderLayers(UltraEngine::RENDERLAYER_1);
    viewmodel->SetColor(1, 0, 0);
    viewmodel->Turn(45, 45, 0);

    // Although I'm further away, I should render on top!
    viewmodel->SetPosition(0, 0, 1);

    //Main loop
    while (window->Closed() == false and window->KeyHit(KEY_ESCAPE) == false)
    {
        world->Update();
        world->Render(framebuffer);
    }
    return 0;
}

SpiderPig · December 28, 2022

It seems to work if you create two perspective cameras.

reepblue · December 28, 2022

Oh wow, that parameter isn't supposed to be there. There wasn't supposed to be any 2D drawing at all. That's what I get for saying "Just one more thing" til midnight.

I'll try removing it tomorrow.

SpiderPig · December 28, 2022

I was wondering if that was supposed to be there.

SpiderPig · December 28, 2022

@Josh I'm curious if the following is an acceptable way of setting a texture onto a panel. The texture is from a camera's render target and all seems to work well. I'd rather use the GUI instead of a sprite in this case as it's just easier.

widget->blocks[0].texture = texture;

SpiderPig · December 28, 2022

With the GUI a transparent panel is cutting holes though it's parent. Also the same for text and sliders.

This might be similar to what @reepblue was referring to earlier with SetDepthPrepass() not working as expected?

#include "UltraEngine.h"
#include "ComponentSystem.h"


using namespace UltraEngine;


int main(int argc, const char* argv[])
{
    auto displays = GetDisplays();
    auto window = CreateWindow("Ultra Engine", 0, 0, 1280, 720, displays[0], WINDOW_CENTER | WINDOW_TITLEBAR);
    auto world = CreateWorld();

    auto framebuffer = CreateFramebuffer(window);

    auto camera = CreateCamera(world);
    camera->SetClearColor(1,0,0);
    camera->SetFov(70);
    camera->SetPosition(0, 2, -3);

    auto font = LoadFont("Fonts/arial.ttf");
    auto ui = CreateInterface(world, font, framebuffer->size);
    ui->SetRenderLayers(RENDERLAYER_1);
    ui->root->SetColor(0, 0, 0, 0);

    auto ui_cam = CreateCamera(world, PROJECTION_ORTHOGRAPHIC);
    ui_cam->SetPosition(framebuffer->size.x / 2, framebuffer->size.y / 2, 0);
    ui_cam->SetRenderLayers(RENDERLAYER_1);
    ui_cam->SetClearMode(CLEAR_DEPTH);


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

    auto floor = CreateBox(world, 1000.0f, 0.1f, 1000.0f);

    auto back_panel = CreatePanel(10, 10, 250, 500, ui->root);
    auto top_panel = CreatePanel(10, 10, 100, 480, back_panel);
    top_panel->SetColor(1, 1, 1, 0);

    auto text = CreateLabel("Hello", 120, 10, 100, 20, back_panel);
    auto slider = CreateSlider(120, 40, 100, 20, back_panel);


    while (window->Closed() == false and window->KeyDown(KEY_ESCAPE) == false)
    {
        world->Update();
        world->Render(framebuffer);
    }
    return 0;
}

Josh · December 28, 2022

Here is a simpler example that demonstrates the problem:

#include "UltraEngine.h"
#include "ComponentSystem.h"

using namespace UltraEngine;

int main(int argc, const char* argv[])
{
    //Get the displays
    auto displays = GetDisplays();

    //Create a window
    auto window = CreateWindow("Ultra Engine", 0, 0, 1280, 720, displays[0], WINDOW_CENTER | WINDOW_TITLEBAR);

    //Create framebuffer
    auto framebuffer = CreateFramebuffer(window);

    //Create world
    auto world = CreateWorld();

    //Create a ortho camera
    auto camera2D = CreateCamera(world, PROJECTION_ORTHOGRAPHIC);
    camera2D->SetClearColor(0, 0, 1);
    
    camera2D->SetPosition((float)framebuffer->size.x * 0.5f, (float)framebuffer->size.y * 0.5f, 0);

    //Create sprite
     auto sprite = CreateSprite(world, 400, 400);
    auto mtl = CreateMaterial();
    sprite->SetMaterial(mtl);

    auto sprite2 = CreateSprite(world, 400, 400);
    sprite2->SetColor(1, 0, 0);
    sprite2->SetPosition(500, 0, 0);

    //Main loop
    while (window->Closed() == false and window->KeyHit(KEY_ESCAPE) == false)
    {
        camera2D->SetDepthPrepass(window->KeyDown(KEY_SPACE));

        world->Update();
        world->Render(framebuffer);
    }
    return 0;
}

Josh · December 28, 2022

Update

Adjusted depth settings when early z-pass is disabled.

Josh · December 28, 2022

10 hours ago, reepblue said:

This example shows UI not updating properly or I'm doing it wrong. Either way, the list box stops working properly.

You have too many events piling up in the queue faster than you are processing them. Change "if PeekEvent" to "while PeekEvent()".

Josh · December 28, 2022

@SpiderPig This example reproduces your problem using a single camera...

#include "UltraEngine.h"

using namespace UltraEngine;

int main(int argc, const char* argv[])
{
    auto displays = GetDisplays();
    auto window = CreateWindow("Ultra Engine", 0, 0, 1280, 720, displays[0], WINDOW_CENTER | WINDOW_TITLEBAR);
    auto world = CreateWorld();

    auto framebuffer = CreateFramebuffer(window);

    auto font = LoadFont("Fonts/arial.ttf");
    auto ui = CreateInterface(world, font, framebuffer->size);
    
    auto ui_cam = CreateCamera(world, PROJECTION_ORTHOGRAPHIC);
    ui_cam->SetClearColor(0, 1, 0);
    ui_cam->SetPosition(float(framebuffer->size.x) * 0.5f, float(framebuffer->size.y) * 0.5f, 0);
    ui_cam->SetDepthPrepass(true);

    auto text = CreateLabel("Hello", 120, 10, 100, 20, ui->root);
    auto slider = CreateSlider(120, 40, 100, 20, ui->root);

    while (window->Closed() == false and window->KeyDown(KEY_ESCAPE) == false)
    {
        while (PeekEvent())
        {
            auto e = WaitEvent();
            ui->ProcessEvent(e);
        }

        world->Update();
        world->Render(framebuffer);
    }
    return 0;
}

reepblue · December 28, 2022

51 minutes ago, Josh said:

You have too many events piling up in the queue faster than you are processing them. Change "if PeekEvent" to "while PeekEvent()".

That's because I pulled @klepto2's example from the last page and I was making stupid mistakes because it was getting late. 🙃

I think the issue would can still happen even if that typo was corrected. I don't think independently resizing the UI isn't an event.

I'll try it again tonight.

klepto2 · December 28, 2022

A small experiment to recreate an effect i used in my ocean for Leadwerks:

This is uses a second camera with an attached postprocess effect which renders a distance and direction map from a topdown view. It consists of many passes but is still amazingly fast:

Render everything but water in a texturebuffer where you store the texcoords for every pixel higher than the water level
depending on the texture resolution: perform a JFA (https://www.shadertoy.com/view/WlGyR3) in multiple step sizes
store the distance of each pixel to the shore

You can see that this is not very accurate as i am currently only render a full cascade for the entire world. But you can get the idea behind it.

Unfortunatly UltraEngine currently has no access to clipmaps which leads to the artifact you can see when the sphere is above water. But once clipmaps are reintroduced this should be a no-brainer to solve.

Josh · December 28, 2022

Update

Fixed bug where transparent objects were being drawn in the depth pre-pass, causing visual errors

11 hours ago, SpiderPig said:

I'm curious if the following is an acceptable way of setting a texture onto a panel. The texture is from a camera's render target and all seems to work well. I'd rather use the GUI instead of a sprite in this case as it's just easier.

Currently it's not really possible without using a pixmap, which would only work with image data in system memory, but it would probably not be too difficult to add an option for this, probably a Widget::SetTexture() method.

1 hour ago, klepto2 said:

Unfortunatly UltraEngine currently has no access to clipmaps which leads to the artifact you can see when the sphere is above water. But once clipmaps are reintroduced this should be a no-brainer to solve.

What do you propose? Something like Camera::SetClipPlane(const Plane& p, const int index)?

Josh · December 28, 2022

@SpiderPig In this example, you never rendered world2, so it never gets drawn.

This code will work, but I don't think the engine likes constantly switching back and forth between worlds. It would be much better to use render layers to control what gets drawn on which camera. There is also a Camera::SetRealtime method which can be used to draw a camera only once or intermittently.

#include "UltraEngine.h"
#include "ComponentSystem.h"


using namespace UltraEngine;


int main(int argc, const char* argv[])
{
    auto displays = GetDisplays();
    auto window = CreateWindow("Ultra Engine", 0, 0, 1280, 720, displays[0], WINDOW_CENTER | WINDOW_TITLEBAR);
    auto world = CreateWorld();

    auto framebuffer = CreateFramebuffer(window);

    auto camera = CreateCamera(world);
    camera->SetClearColor(0.125);
    camera->SetFov(70);
    camera->SetPosition(0, 2, -3);

    auto font = LoadFont("Fonts/arial.ttf");
    auto ui = CreateInterface(world, font, framebuffer->size);
    ui->SetRenderLayers(RENDERLAYER_1);
    ui->root->SetColor(0, 0, 0, 0);

    auto ui_cam = CreateCamera(world, PROJECTION_ORTHOGRAPHIC);
    ui_cam->SetPosition(framebuffer->size.x / 2, framebuffer->size.y / 2, 0);
    ui_cam->SetRenderLayers(RENDERLAYER_1);
    ui_cam->SetClearMode(CLEAR_DEPTH);


    auto world2 = CreateWorld();
    //world2 = world;
    auto tex_buffer = CreateTextureBuffer(256, 256);
    auto cam2 = CreateCamera(world2);
    cam2->SetClearColor(1, 0, 0);
    cam2->SetRenderTarget(tex_buffer);
    cam2->Move(0, 0, -5);
    auto light2 = CreateDirectionalLight(world2);
    auto box2 = CreateBox(world2);

    auto mat = CreateMaterial();
    mat->SetTexture(tex_buffer->GetColorAttachment());

    auto sprite = CreateSprite(world, 256, 256);
    sprite->SetRenderLayers(RENDERLAYER_1);
    sprite->SetMaterial(mat);


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

    auto floor = CreateBox(world, 1000.0f, 0.1f, 1000.0f);

    while (window->Closed() == false and window->KeyDown(KEY_ESCAPE) == false)
    {
        box2->Turn(0, 1, 0);

        world->Update();
        world2->Render(framebuffer);
        world->Render(framebuffer);
    }
    return 0;
}

Josh · December 28, 2022

Also, you guys should use floating points when setting the 2D camera's position:

camera2D->SetPosition(float(framebuffer->size.x) * 0.5f, float(framebuffer->size.y) * 0.5f, 0.0f);

If you do integer division your position can be slightly off if the framebuffer happens to have an odd number for width or height. This WILL cause your sprites to not be pixel-perfect, and will cause blurry font rendering.

Josh · December 28, 2022

12 hours ago, reepblue said:

Also, speaking of layers, how would one blend 2 perspective cameras in one image. An example would be drawing a first-person view model on Layer 1 so it can have its own FOV settings and not be obstructed by anything.

You would never be able to do something like this with Leadwerks.

reepblue · December 28, 2022

11 minutes ago, Josh said:

You would never be able to do something like this with Leadwerks.

I think the only other engines that allow this is id tech and Source.

I have yet to fix my example from last night but I'm looking forward getting an fps demo up and running soon. 🙂

Josh · December 28, 2022

This simple example shows fullscreen window resolution changes. It works but it will trigger a validation error in debug mode:

#include "UltraEngine.h"

using namespace UltraEngine;

int main(int argc, const char* argv[])
{
    //Get the displays
    auto displays = GetDisplays();

    //Create a window
    auto window = CreateWindow("Ultra Engine", 0, 0, 1280, 720, displays[0], WINDOW_FULLSCREEN);

    //Create a world
    auto world = CreateWorld();

    //Create a framebuffer
    auto framebuffer = CreateFramebuffer(window);

    //Create light
    auto light = CreateBoxLight(world);
    light->SetRange(-10, 10);
    light->SetRotation(15, 15, 0);
    light->SetColor(2);

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

    //Create scenery
    auto box = CreateBox(world);

    //Main loop
    while (window->Closed() == false and window->KeyDown(KEY_ESCAPE) == false)
    {
        if (window->KeyHit(KEY_SPACE))
        {
            window = CreateWindow("Ultra Engine", 0, 0, 1920, 1080, displays[0], WINDOW_FULLSCREEN);
            framebuffer = CreateFramebuffer(window);
        }

        world->Update();
        world->Render(framebuffer);
    }
    return 0;
}

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