public void run()
{
/* The next few lines start up the engine. Just like in most other tutorials
* before. But in addition, we ask the user if he wants this example to use
* high level shaders if he selected a driver which is capable of doing so.
*/
// ask user for driver
DriverType driverType;
// Ask user to select driver:
StringBuilder sb = new StringBuilder();
sb.Append("Please select the driver you want for this example:\n");
sb.Append("\n(a) Direct3D 9.0c\n(b) Direct3D 8.1\n(c) OpenGL 1.5");
sb.Append("\n(d) Software Renderer\n(e) Apfelbaum Software Renderer");
sb.Append("\n(f) Null Device\n(otherKey) exit\n\n");
// Get the user's input:
TextReader tIn = Console.In;
TextWriter tOut = Console.Out;
tOut.Write(sb.ToString());
string input = tIn.ReadLine();
// Select device based on user's input:
switch (input)
{
case "a":
driverType = DriverType.DIRECT3D9;
break;
case "b":
driverType = DriverType.DIRECT3D8;
break;
case "c":
driverType = DriverType.OPENGL;
break;
case "d":
driverType = DriverType.SOFTWARE;
break;
case "e":
driverType = DriverType.SOFTWARE2;
break;
case "f":
driverType = DriverType.NULL_DRIVER;
break;
default:
return;
}
// ask the user if we should use high level shaders for this example
if (driverType == DriverType.DIRECT3D9 ||
driverType == DriverType.OPENGL)
{
tOut.Write("Please press 'y' if you want to use high level shaders.\n");
input = tIn.ReadLine();
if (input.ToLower() == "y")
{
UseHighLevelShaders = true;
}
}
// create device
device = new IrrlichtDevice(driverType, new Dimension2D(1024, 768), 32, false, true, true);
if (device == null)
{
tOut.Write("Device creation failed.");
return;
}
ISceneManager smgr = device.SceneManager;
IVideoDriver driver = device.VideoDriver;
IGUIEnvironment gui = device.GUIEnvironment;
/*Now for the more interesting parts. If we are using Direct3D, we want to
* load vertex and pixel shader programs, if we have OpenGL, we want to use ARB
* fragment and vertex programs. I wrote the corresponding programs down into the
* files d3d8.ps, d3d8.vs, d3d9.ps, d3d9.vs, opengl.ps and opengl.vs. We only
* need the right filenames now. This is done in the following switch. Note,
* that it is not necessary to write the shaders into text files, like in this
* example. You can even write the shaders directly as strings into the cpp source
* file, and use later addShaderMaterial() instead of addShaderMaterialFromFiles().*/
string vsFileName = "";
string psFileName = "";
switch (driverType)
{
case DriverType.DIRECT3D8:
psFileName = path + "d3d8.psh";
vsFileName = path + "d3d8.vsh";
break;
case DriverType.DIRECT3D9:
if (UseHighLevelShaders)
{
psFileName = path + "d3d9.hlsl";
vsFileName = psFileName; // both shaders are in the same file
}
else
{
psFileName = path + "d3d9.psh";
vsFileName = path + "d3d9.vsh";
}
break;
case DriverType.OPENGL:
if (UseHighLevelShaders)
{
psFileName = path + "opengl.frag";
vsFileName = path + "opengl.vert";
}
else
{
psFileName = path + "opengl.psh";
vsFileName = path + "opengl.vsh";
}
break;
}
/*In addition, we check if the hardware and the selected renderer is capable
* of executing the shaders we want. If not, we simply set the filename string
* to 0. This is not necessary, but useful in this example: For example, if the
* hardware is able to execute vertex shaders but not pixel shaders, we create a
* new material which only uses the vertex shader, and no pixel shader. Otherwise,
* if we would tell the engine to create this material and the engine sees that
* the hardware wouldn't be able to fullfill the request completely, it would not
* create any new material at all. So in this example you would see at least the
* vertex shader in action, without the pixel shader.*/
if (!driver.QueryFeature(VideoDriverFeature.PIXEL_SHADER_1_1) &&
!driver.QueryFeature(VideoDriverFeature.ARB_FRAGMENT_PROGRAM_1))
{
// still unimplemented
//device.Logger.log("WARNING: Pixel shaders disabled \n"+
// "because of missing driver/hardware support.");
psFileName = null;
}
if (!driver.QueryFeature(VideoDriverFeature.VERTEX_SHADER_1_1) &&
!driver.QueryFeature(VideoDriverFeature.ARB_FRAGMENT_PROGRAM_1))
{
// still unimplemented
//device.Logger.log("WARNING: Vertex shaders disabled \n"+
// "because of missing driver/hardware support.");
vsFileName = null;
}
/*Now lets create the new materials. As you maybe know from previous examples,
* a material type in the Irrlicht engine is set by simply changing the
* MaterialType value in the SMaterial struct. And this value is just a simple
* 32 bit value, like video::EMT_SOLID. So we only need the engine to create a
* new value for us which we can set there. To do this, we get a pointer to the
* IGPUProgrammingServices and call addShaderMaterialFromFiles(), which returns
* such a new 32 bit value. That's all. The parameters to this method are the
* following: First, the names of the files containing the code of the vertex
* and the pixel shader. If you would use addShaderMaterial() instead, you would
* not need file names, then you could write the code of the shader directly as
* string. The following parameter is a pointer to the IShaderConstantSetCallBack
* class we wrote at the beginning of this tutorial. If you don't want to set
* constants, set this to 0. The last paramter tells the engine which material
* it should use as base material. To demonstrate this, we create two materials
* with a different base material, one with EMT_SOLID and one with
* EMT_TRANSPARENT_ADD_COLOR.*/
// create materials
IGPUProgrammingServices gpu = driver.GPUProgrammingServices;
int newMaterialType1 = 0;
int newMaterialType2 = 0;
if (gpu != null)
{
IShaderConstantSetCallBack callBack = this;
// create the shaders depending on if the user wanted high level
// or low level shaders:
if (UseHighLevelShaders)
{
// create material from high level shaders (hlsl or glsl)
newMaterialType1 = gpu.AddHighLevelShaderMaterialFromFiles(
vsFileName, "vertexMain", VertexShaderType.VST_VS_1_1,
psFileName, "pixelMain", PixelShaderType.PST_PS_1_1,
callBack, MaterialType.SOLID);
newMaterialType2 = gpu.AddHighLevelShaderMaterialFromFiles(
vsFileName, "vertexMain", VertexShaderType.VST_VS_1_1,
psFileName, "pixelMain", PixelShaderType.PST_PS_1_1,
callBack, MaterialType.TRANSPARENT_ADD_COLOR);
}
else
{
newMaterialType1 = gpu.AddShaderMaterialFromFiles(vsFileName,
psFileName, callBack, MaterialType.SOLID);
newMaterialType2 = gpu.AddShaderMaterialFromFiles(vsFileName,
psFileName, callBack, MaterialType.TRANSPARENT_ADD_COLOR);
}
}
/*Now its time for testing out the materials. We create a test cube and set the
* material we created. In addition, we add a text scene node to the cube and a
* rotatation animator, to make it look more interesting and important.*/
// create test scene node 1, with the new created material type 1
ISceneNode node = smgr.AddTestSceneNode(50, null, 0, new Vector3D(0, 0, 0));
node.SetMaterialTexture(0, driver.GetTexture(path + "wall.bmp"));
node.SetMaterialType((MaterialType)newMaterialType1);
smgr.AddTextSceneNode(gui.BuiltInFont, "PS & VS & EMT_SOLID",
new Color(255, 255, 255, 255), node, new Vector3D(), 0);
ISceneNodeAnimator anim = smgr.CreateRotationAnimator(
new Vector3D(0, 0.3f, 0));
node.AddAnimator(anim);
//Same for the second cube, but with the second material we created.
node = smgr.AddTestSceneNode(50, null, 0, new Vector3D(0, -10, 50));
node.SetMaterialTexture(0, driver.GetTexture(path + "wall.bmp"));
node.SetMaterialType((MaterialType)newMaterialType2);
smgr.AddTextSceneNode(gui.BuiltInFont, "PS & VS & EMT_TRANSPARENT",
new Color(255, 255, 255, 255), node, new Vector3D(), 0);
anim = smgr.CreateRotationAnimator(
new Vector3D(0, 0.3f, 0));
node.AddAnimator(anim);
// Then we add a third cube without a shader on it, to be able to compare the cubes.
node = smgr.AddTestSceneNode(50, null, 0, new Vector3D(0, 50, 25));
node.SetMaterialTexture(0, driver.GetTexture(path + "wall.bmp"));
smgr.AddTextSceneNode(gui.BuiltInFont, "NO SHADER",
new Color(255, 255, 255, 255), node, new Vector3D(), 0);
//And last, we add a skybox and a user controlled camera to the scene. For the
//skybox textures, we disable mipmap generation, because we don't need mipmaps on it.
// add a nice skybox
driver.SetTextureCreationFlag(TextureCreationFlag.CREATE_MIP_MAPS, false);
smgr.AddSkyBoxSceneNode(
driver.GetTexture(path + "irrlicht2_up.jpg"),
driver.GetTexture(path + "irrlicht2_dn.jpg"),
driver.GetTexture(path + "irrlicht2_lf.jpg"),
driver.GetTexture(path + "irrlicht2_rt.jpg"),
driver.GetTexture(path + "irrlicht2_ft.jpg"),
driver.GetTexture(path + "irrlicht2_bk.jpg"),
null, 0);
driver.SetTextureCreationFlag(TextureCreationFlag.CREATE_MIP_MAPS, true);
// add a camera and disable the mouse cursor
ICameraSceneNode cam = smgr.AddCameraSceneNodeFPS(null, 100, 100, 0);
cam.Position = new Vector3D(-100, 50, 100);
cam.Target = new Vector3D();
device.CursorControl.Visible = false;
/*Finally we simply have to draw everything, that's all.*/
int lastFPS = -1;
while (device.Run())
{
if (device.WindowActive)
{
device.VideoDriver.BeginScene(true, true, new Color(0, 200, 200, 200));
device.SceneManager.DrawAll();
device.VideoDriver.EndScene();
int fps = device.VideoDriver.FPS;
if (lastFPS != fps)
{
device.WindowCaption = "Irrlicht Engine - Quake 3 Map example [" +
device.VideoDriver.Name + "] FPS:" + fps.ToString();
lastFPS = fps;
}
}
}
/*
* In the end, delete the Irrlicht device.
*/
// Instead of device->drop, we'll use:
GC.Collect();
}