ULTRAPP Kit

[Robert_d1968]

I do not know enough about C++ to help you with that problem, as of yet.

Robert

[SlipperyBrick]

The OpenGL example code doesn't work out of the box in the documentation. You'll probably get this kind of result ...

I'd recommend adjusting to this ...

#include "UltraEngine.h"

#include <GL/GL.h>
#pragma comment (lib, "opengl32.lib")

using namespace UltraEngine;

bool ResizeViewport(const Event& ev, shared_ptr<Object> extra)
{
    if (ev.id == EVENT_WINDOWSIZE)
    {
        auto window = ev.source->As<Window>();
        iVec2 sz = window->ClientSize();
        auto subwindow = extra->As<Window>();
        subwindow->SetShape(200, 8, sz.x - 200 - 8, sz.y - 16);
    }
    return true;
}

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

    //Create a window
    auto window = CreateWindow("OpenGL Example", 0, 0, 800, 600, displays[0], WINDOW_TITLEBAR | WINDOW_RESIZABLE);

    //Create user interface
    auto ui = CreateInterface(window);
    iVec2 sz = ui->root->ClientSize();
    auto treeview = CreateTreeView(8, 8, 200 - 16, sz.y - 16, ui->root);
    treeview->SetLayout(1, 0, 1, 1);
    treeview->root->AddNode("Object 1");
    treeview->root->AddNode("Object 2");
    treeview->root->AddNode("Object 3");

    //Create viewport window
    auto subwindow = CreateWindow("", 200, 8, sz.x - 200 - 8, sz.y - 16, window, WINDOW_EMBEDDED);

    //Adjust the viewport size when main window resized
    ListenEvent(EVENT_WINDOWSIZE, window, ResizeViewport, subwindow);

    //Initialize OpenGL context    
    HWND hwnd = (HWND)(subwindow->GetHandle());
    HDC hdc = GetDC(hwnd);

    PIXELFORMATDESCRIPTOR pfd =
    {
        sizeof(PIXELFORMATDESCRIPTOR),
        1,
        PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER,    // Flags
        PFD_TYPE_RGBA,        // The kind of framebuffer. RGBA or palette.
        32,                   // Colordepth of the framebuffer.
        0, 0, 0, 0, 0, 0,
        0,
        0,
        0,
        0, 0, 0, 0,
        24,                   // Number of bits for the depthbuffer
        8,                    // Number of bits for the stencilbuffer
        0,                    // Number of Aux buffers in the framebuffer.
        PFD_MAIN_PLANE,
        0,
        0, 0, 0
    };
   
    int format = ChoosePixelFormat(hdc, &pfd);

    if (SetPixelFormat(hdc, format, &pfd) == 0) RuntimeError("SetPixelFormat() failed.");

    HGLRC glcontext = wglCreateContext(hdc);

    if (glcontext == NULL) RuntimeError("wglCreateContext() failed.");

    wglMakeCurrent(hdc, glcontext);

    while (true)
    {
        //Check for events
        const Event ev = WaitEvent();
        switch (ev.id)
        {
        case EVENT_WINDOWPAINT:
            if (ev.source == subwindow)
            {
                iVec2 sz = subwindow->ClientSize();
                glViewport(0, 0, sz.x, sz.y);
                glClearColor(0.0f, 0.0f, 1.0f, 1.0f);
                glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
                SwapBuffers(hdc);
            }
            break;
        case EVENT_WINDOWCLOSE:
            if (ev.source == window) return 0;
            break;
        }
    }

    return 0;
}

The issues I found in the code example were GetHandle returns a void * so a cast to HWND was required to get the window handle. Also the format parameter for SetPixelFormat was hard-coded to a value of 1. According to MS documentation it is best practice to get the available match of pixel format for the device context by calling ChoosePixelFormat.

And the enum in the code example for the creation of subwindow was WINDOW_CHILD, this isn't included in the current build of UAK (maybe in beta, I have no idea ?) so I used WINDOW_EMBEDDED instead.

I also changed what window calls ClientSize in the render loop, subwindow now calls ClientSize instead of window which results in the correct size being handed to the viewport.

[SlipperyBrick]

Can't wait to dive into this more when I have more time, its very promising (way cooler than IMGUI or any other GUI library I've come across). Although for the sake of cleanliness it would be great to have redundant includes and dependencies removed from the source.

I've been trying to link and include UAK in my own project (as opposed to using the launcher to generate a project for me) and it is a nightmare having to go through and remove the excess stuff that isn't used, I've spent a good few hours perusing around various header files removing includes myself. This may be just me and everyone else is ok with this but I like to setup my projects myself as I have complete control over my build configurations, what includes and dependencies I use, as well as general control over my project structure.

[Josh]

I will have an update out later today.

[SlipperyBrick]

I gotta say though man, fantastic work! Such a clean API.

Your definitely right about the resizing too, this ****s rapid! My window is resizing before I even click it, that's how quick it is, lightening speed! ?

And the DPI scaling mwah! I'll for sure be using this as a frontend solution for my University major project and any other desktop applications I create. I've already been recommending it to my fellow programmer pals.

[Josh]

I am adding some additional information here . See "Adding to an Existing Project":
https://www.ultraengine.com/learn/CPP/Introduction

I guess this won't work with LE4 unless a 32-bit build is created, which I was not planning but maybe we can add that.

[SlipperyBrick]

Where can I buy UAK? I want to get my mate a copy but can't find it on Steam (I purchased when backing it on kickstarter)

EDIT: Just noticed the store button, I'm an idiot ?

Edited March 17, 2021 by SlipperyBrick
I'm an idiot

[Josh]

1 hour ago, SlipperyBrick said:

Where can I buy UAK? I want to get my mate a copy but can't find it on Steam (I purchased when backing it on kickstarter)

EDIT: Just noticed the store button, I'm an idiot ?

Steam keys were sent out to backers.

[Robert_d1968]

Is it possible to load my 4.6 map into the Ultra Engine Application?

Thanks for any help that you can provide,

Robert

[Josh]

The Ultra Engine beta does load Leadwerks map files, but Ultra App Kit does not have any 3D capabilities.

[Robert_d1968]

I also tried out the OpenGL on two computers both computers were Alienware's None would display a thing in the box for the 

Display to be drawn in..  On my alienware it has the gforce 880M video card, it works great with lead werks.

But I see, that Windows 10 seems to have problems with AMD graphics drivers and I did notice alot of AMD stuff in that program.

 

Robert

Edited March 20, 2021 by Robert_d1968
a misspelled word to correct

[Robert_d1968]

I also tried the second one, same thing for both versions.

No graphics at all being drawn anywhere on the screen.

Robert