static void Main(string[] args)
{
//We choosed OpenGL because it is cross-platform and we only have the openGL shader
//So please do not change this unless you change the shader !
IrrlichtDevice device = new IrrlichtDevice(DriverType.Direct3D9,
new Dimension2D(640, 480),
32, false, true, true, false);
//We set a new working directory
device.FileSystem.WorkingDirectory = "../../medias";
device.OnEvent += new OnEventDelegate(device_OnEvent);
//We set a basic caption
string caption = "Irrlicht .NET CP Shaders and Particles Example";
//We set our handlers
Driver = device.VideoDriver;
Scene = device.SceneManager;
//We have already seen that... The only special thing is the pointless emitter (what a funny name isn't it ?)
//Which is detailed just down.
Texture fire = Driver.GetTexture("fire.bmp");
ParticleSystemSceneNode particles = Scene.AddParticleSystemSceneNode(false, null, -1);
particles.SetEmitter(new PointlessEmitter());
//particles.AddAffector(new PointlessAffector());
particles.SetMaterialTexture(0, fire);
particles.SetMaterialType(MaterialType.TransparentAddColor);
particles.SetMaterialFlag(MaterialFlag.Lighting, false);
particles.ParticleSize = new Dimension2Df(50, 50);
particles.ParticlesAreGlobal = false;
particles = Scene.AddParticleSystemSceneNode(false, null, -1);
particles.SetEmitter(new PointlessEmitter());
//particles.AddAffector(new PointlessAffector());
particles.SetMaterialTexture(0, fire);
particles.SetMaterialType(MaterialType.TransparentAddColor);
particles.SetMaterialFlag(MaterialFlag.Lighting, false);
particles.ParticleSize = new Dimension2Df(50, 50);
particles.Position = new Vector3D(0, 400, 0);
particles.ParticlesAreGlobal = false;
particles = Scene.AddParticleSystemSceneNode(false, null, -1);
particles.SetEmitter(new PointlessEmitter());
//particles.AddAffector(new PointlessAffector());
particles.SetMaterialTexture(0, fire);
particles.SetMaterialType(MaterialType.TransparentAddColor);
particles.SetMaterialFlag(MaterialFlag.Lighting, false);
particles.ParticleSize = new Dimension2Df(50, 50);
particles.Position = new Vector3D(0, -400, 0);
particles.ParticlesAreGlobal = false;
//Here we only create 3 cubes and add a texture... Nothing exciting
SceneNode cube1, cube2, cube3;
cube1 = Scene.AddCubeSceneNode(40f, null, -1);
cube2 = Scene.AddCubeSceneNode(40f, null, -1);
cube3 = Scene.AddCubeSceneNode(40f, null, -1);
cube1.SetMaterialTexture(0, Driver.GetTexture("rockwall.bmp"));
cube2.SetMaterialTexture(0, Driver.GetTexture("rockwall.bmp"));
cube3.SetMaterialTexture(0, Driver.GetTexture("rockwall.bmp"));
//Here comes the fun... We create two low level shaders (taken from Irrlich's shader Example) and we set the base material as
//Solid for the first one and transparent for the second
int mat = Driver.GPUProgrammingServices.AddShaderMaterialFromFiles("opengl.vsh", "opengl.psh", OnShaderSet, MaterialType.Solid, 0);
int mat2 = Driver.GPUProgrammingServices.AddShaderMaterialFromFiles("opengl.vsh", "opengl.psh", OnShaderSet, MaterialType.TransparentAddColor, 0);
//And now we add both materials... Notice that no cast is needed because SetMaterialType
//Has an overload especially made for shaders !
cube2.SetMaterialType(mat);
cube3.SetMaterialType(mat2);
cube2.Position = new Vector3D(0, -40, 0);
cube3.Position = new Vector3D(0, 40, 0);
//We create a fixed cam for our render target scene
CameraSceneNode fixedcam = Scene.AddCameraSceneNode(null);
fixedcam.Position = new Vector3D(50, 0, -1000);
fixedcam.FarValue = 10000f;
fixedcam.AddAnimator(Scene.CreateFlyCircleAnimator(fixedcam.Target, 5000f, 0.001f));
//And a fps cam for our main scene
CameraSceneNode fpscam = Scene.AddCameraSceneNodeFPS(null, 100f, 400f, false);
Scene.ActiveCamera.Position = new Vector3D(50, 0, -1000);
Scene.ActiveCamera.FarValue = 10000f;
Texture mask = Driver.AddTexture(new Dimension2D(128, 128), "", ColorFormat.A8R8G8B8);
//Here is another cool feature from .NET CP
//Direct access to textures via Texture.Lock/Unlock and Texture.SetPixel/GetPixel
//Uncomment these lines to see the effect :)
/*int w = mask.OriginalSize.Width;
int h = mask.OriginalSize.Height;
double maxdistance = Math.Sqrt(Math.Pow(w, 2) + Math.Pow(h, 2));
mask.Lock();
for (int x = 0; x < w; x++)
for (int y = 0; y < h; y++)
{
double distance = Math.Sqrt(Math.Pow((w - x), 2) + Math.Pow((h - y), 2));
double coeff = distance / maxdistance;
int color = (int)(255 - (255 * coeff));
Color pixel = new Color((int)(color / 1.5), (int)(color / 1.5), (int)(color / 2), (int)(color / 2));
mask.SetPixel(x, y, pixel);
}
mask.Unlock();
//Again a useful feature... Direct texture saving to common formats such as png,jpg,bmp or gif...
//Without coding anything, your texture is directly saved in Irrlicht's working directory !
mask.Save("image.png");*/
//You may have noticed that GetPixel/SetPixel is very slow even if you lock the texture.
//Another insecure but quite faster way to proceed is to convert our lock to a pointer.
//It needs unsafe code but works very fast...
//However it is very unsecure and you must know perfectly what you are doing...
//That's why Modify/Retrieve exists (look down)
/*int w = mask.OriginalSize.Width;
int h = mask.OriginalSize.Height;
double maxdistance = Math.Sqrt(Math.Pow(w, 2) + Math.Pow(h, 2));
IntPtr lockresult = mask.Lock();
unsafe
{
int* directacces = (int*)(void*)lockresult;
int pitch = mask.Pitch / 4;
for (int x = 0; x < w; ++x)
for (int y = 0; y < h; ++y)
{
double distance = Math.Sqrt(Math.Pow((w - x), 2) + Math.Pow((h - y), 2));
double coeff = distance / maxdistance;
int color = (int)(255 - (255 * coeff));
Color pixel = new Color((int)(color / 1.5), (int)(color / 1.5), (int)(color / 2), (int)(color / 2));
directacces[x + y * pitch] = pixel.NativeColor;
}
}
mask.Unlock();*/
//Here is the SAFEST AND FASTEST way to modify our texture.
//A simple delegate which takes the coords of the pixel and returns the color
//It is called on each pixel and you can even return false if you don't want to change the pixel.
//We can now create our mask without speed or compatibility issue !
int w = mask.OriginalSize.Width / 2;
int h = mask.OriginalSize.Height / 2;
double maxdistance = Math.Sqrt(Math.Pow(w, 2) + Math.Pow(h, 2));
//We create a delegate to modify each pixel
ModifyPixel del = delegate(int x, int y, out Color col)
{
//Here is our formula... You can modify it as you wish, this is just an example !
double distance = Math.Sqrt(Math.Pow((w - x), 2) + Math.Pow((h - y), 2));
double coeff = distance / maxdistance;
int color = (int)(255 - (255 * coeff));
//We now set the out color
col = new Color((int)(color / 1.5), (int)(color / 1.5), (int)(color / 2), (int)(color / 2));
//And we return true since we created a color.
//If you return false, the current pixel won't be modified !
return true;
};
//And we modify our texture with our delegate
mask.Modify(del);
//Uncomment this line to save our mask on a portable network graphic file !
//You do not need to know jpg, bmp, gif, png... formats since they are converted automatically
//mask.Save("mask.png");
Console.WriteLine();
Console.WriteLine("============================================");
Console.WriteLine("Features List :");
Console.WriteLine();
for (VideoDriverFeature feat = 0; feat < VideoDriverFeature.Count; feat++)
Console.WriteLine(feat + " = " + Driver.QueryFeature(feat));
Console.WriteLine("============================================");
//Here is our logo
Texture logo = Driver.GetTexture("NETCPlogo.png");
//Here is another feature, RenderTarget
Texture renderTarget = Driver.CreateRenderTargetTexture(new Dimension2D(320, 240));
int lastfps = -1, fps = 0;
while (device.Run() && !Exit)
{
Driver.BeginScene(true, true, Color.Gray);
//Driver.SetRenderTarget(renderTarget, true, true, Color.TransparentBlue);
//Scene.ActiveCamera = fixedcam;
//Scene.DrawAll();
//Driver.SetRenderTarget(null, true, true, Color.Gray);
Scene.ActiveCamera = fpscam;
Scene.DrawAll();
//Ok, seems like Irrlicht 1.3.1 doesn't like drawing render target on OpenGL
//I guess we will disable this for now...
//Driver.Draw2DImage(renderTarget, new Position2D(0, 0), false);
Driver.Draw2DImage(mask, new Rect(new Position2D(), Driver.ScreenSize), new Rect(new Position2D(), mask.OriginalSize), Color.White, true);
//And finally our logo is painted
Driver.Draw2DImage(logo, new Position2D(0, Driver.ScreenSize.Height - logo.OriginalSize.Height),
new Rect(new Position2D(0, 0),
logo.OriginalSize), Color.White, true);
Driver.EndScene();
fps = Driver.FPS;
if(fps != lastfps)
{
device.WindowCaption = caption + " - FPS : " + fps;
lastfps = fps;
}
}
device.Close();
}
