Draw2DLine only with EDT_SOFTWARE?

[Criamon]

Hi,

I want to draw a simple 2D line.

Code: Select all

int main()
{
  IrrlichtDevice *device = createDevice(video::EDT_SOFTWARE,core::dimension2d<s32>(512, 384));
  device->setWindowCaption(L"Irrlicht Engine - 2D Graphics Demo");
  IVideoDriver* driver = device->getVideoDriver();

  while(device->run() && driver) {
    if (device->isWindowActive()) {
      driver->beginScene(true, true, video::SColor(0,122,65,171));
      SColor color = SColor(0,255,0,0);
      driver->draw2DLine(core::position2d<s32>(50,50), core::position2d<s32>(164, 125), video::SColor(0,255,0,0));
 			driver->endScene();
    }
  }
  device->drop();
  return 0;
}

This code works only with EDT_SOFTWARE. EDT_DIRECTX8 or EDT_OPENGL does not work (the 2d example, where this code basically comes from works with hardware accelleration. But the line isn't drawn there either).

Criamon
GForce MX200, current NVidia Drivers, Windows 2000

[PadrinatoR]

I've tested that code and I have the same problem.

AMD XP 2800+ 512Mb DDR400 ATI R9600XT Omega Drivers 2.5.30 WinXP SP1

[Criamon]

it get's even worse when you use Draw3dLine. Results are different for every engine. And none of them looks ok

Criamon

[AticAtac]

I implemented 2D Line for DirectX :

http://irrlicht.sourceforge.net/phpBB2/ ... php?t=1870

[Zaelsius]

Both OpenGL and DirectX9 API's support line drawing, but I think DirectX 8 does not support simple line drawing calls. In DX9 there are D3DX functions that can achieve that easily, but can't remember about DX8(may be just drawing geometry in screen space in wireframe mode could do the trick... :-/)

In any case I would drop the DX8 device and take full advantage of Dx9 and OGL line drawing, because with them you can even set the width of the lines.