/// <summary>
/// Called once per frame, the call is the entry point for 3d rendering. This
/// function sets up render states, clears the viewport, and renders the scene.
/// </summary>
protected override void Render()
{
// Clear the viewport
device.Clear(ClearFlags.Target | ClearFlags.ZBuffer, System.Drawing.Color.Black.ToArgb(), 1.0f, 0);
device.BeginScene();
// Render the waves
device.SetTexture(0, bumpTex);
device.SetTexture(1, background);
device.TextureState[0].TextureCoordinateIndex = 0;
device.TextureState[0].ColorOperation = TextureOperation.BumpEnvironmentMap;
device.TextureState[0].ColorArgument1 = TextureArgument.TextureColor;
device.TextureState[0].ColorArgument2 = TextureArgument.Current;
device.TextureState[1].TextureCoordinateIndex = 1;
device.TextureState[1].ColorOperation = TextureOperation.SelectArg1;
device.TextureState[1].ColorArgument1 = TextureArgument.TextureColor;
device.TextureState[1].ColorArgument2 = TextureArgument.Current;
device.TextureState[2].ColorOperation = TextureOperation.Disable;
device.VertexFormat = BumpVertex.Format;
device.SetStreamSource(0, waterBuffer, 0);
// Verify that the texture operations are possible on the device
ValidateDeviceParams validParams = device.ValidateDevice();
if (validParams.Result != 0)
{
// The right thing to do when device validation fails is to try
// a different rendering technique. This sample just warns the user.
deviceValidationFailed = true;
}
device.DrawPrimitives(PrimitiveType.TriangleStrip, 0, 2);
// Output statistics
font.DrawText(2, 1, System.Drawing.Color.Yellow, frameStats);
font.DrawText(2, 20, System.Drawing.Color.Yellow, deviceStats);
if (deviceValidationFailed)
{
font.DrawText(2, 40, System.Drawing.Color.Yellow, "Warning: Device validation failed. Rendering may not look right.");
}
device.EndScene();
}
/// <summary>
/// Called once per frame, the call is the entry point for 3d rendering. This
/// function sets up render states, clears the viewport, and renders the scene.
/// </summary>
protected override void Render()
{
// Clear the viewport
device.BeginScene();
// Render the background
device.SetTexture(0, backTex);
device.TextureState[0].ColorArgument1 = TextureArgument.TextureColor;
device.TextureState[0].ColorOperation = TextureOperation.SelectArg1;
device.TextureState[1].ColorOperation = TextureOperation.Disable;
device.VertexFormat = CustomVertex.TransformedColoredTextured.Format;
device.SetStreamSource(0, background, 0);
device.DrawPrimitives(PrimitiveType.TriangleStrip, 0, 2);
// Render the lens
device.SetTexture(0, bumpTex);
device.SetTexture(1, backTex);
device.TextureState[0].ColorOperation = TextureOperation.BumpEnvironmentMap;
device.TextureState[0].ColorArgument1 = TextureArgument.TextureColor;
device.TextureState[0].ColorArgument2 = TextureArgument.Current;
device.TextureState[0].BumpEnvironmentMaterial00 = 0.2f;
device.TextureState[0].BumpEnvironmentMaterial01 = 0.0f;
device.TextureState[0].BumpEnvironmentMaterial10 = 0.0f;
device.TextureState[0].BumpEnvironmentMaterial11 = 0.2f;
device.TextureState[0].BumpEnvironmentLuminanceScale = 1.0f;
device.TextureState[0].BumpEnvironmentLuminanceOffset = 0.0f;
device.TextureState[1].ColorOperation = TextureOperation.SelectArg1;
device.TextureState[1].ColorArgument1 = TextureArgument.TextureColor;
device.TextureState[1].ColorArgument2 = TextureArgument.Current;
// Generate texture coords depending on objects camera space position
Matrix mat = new Matrix();
mat.M11 = 0.5f; mat.M12 = 0.0f;
mat.M21 = 0.0f; mat.M22 = -0.5f;
mat.M31 = 0.0f; mat.M32 = 0.0f;
mat.M41 = 0.5f; mat.M42 = 0.5f;
// Scale-by-z here
Matrix matView, matProj;
matView = device.Transform.View;
matProj = device.Transform.Projection;
Vector3 vEyePt = new Vector3(matView.M41, matView.M42, matView.M43);
float z = vEyePt.Length();
mat.M11 *= (matProj.M11 / (matProj.M33 * z + matProj.M34));
mat.M22 *= (matProj.M22 / (matProj.M33 * z + matProj.M34));
device.Transform.Texture1 = mat;
device.TextureState[1].TextureTransform = TextureTransform.Count2;
device.TextureState[1].TextureCoordinateIndex = (int)TextureCoordinateIndex.CameraSpacePosition | 1;
// Position the lens
Matrix matWorld = Matrix.Translation(0.7f * (1000.0f - 256.0f) * lensX,
0.7f * (1000.0f - 256.0f) * lensY, 0.0f);
device.Transform.World = matWorld;
device.VertexFormat = BumpVertex.Format;
device.SetStreamSource(0, lens, 0);
// Verify that the texture operations are possible on the device
ValidateDeviceParams validParams = device.ValidateDevice();
if (validParams.Result != 0)
{
// The right thing to do when device validation fails is to try
// a different rendering technique. This sample just warns the user.
deviceValidationFailed = true;
}
// Render the lens
device.DrawPrimitives(PrimitiveType.TriangleStrip, 0, 2);
// Output statistics
font.DrawText(2, 1, System.Drawing.Color.Yellow, frameStats);
font.DrawText(2, 20, System.Drawing.Color.Yellow, deviceStats);
if (deviceValidationFailed)
{
font.DrawText(2, 40, System.Drawing.Color.Yellow, "Warning: Device validation failed. Rendering may not look right.");
}
device.EndScene();
}
/// <summary>
/// The device has been created. Resources that are not lost on
/// Reset() can be created here -- resources in Pool.Managed,
/// Pool.Scratch, or Pool.SystemMemory. Image surfaces created via
/// CreateImageSurface are never lost and can be created here. Vertex
/// shaders and pixel shaders can also be created here as they are not
/// lost on Reset().
/// </summary>
protected override void InitializeDeviceObjects()
{
drawingFont.InitializeDeviceObjects(device);
try
{
// Load the texture for the background image
background = GraphicsUtility.CreateTexture(device, "lake.bmp", Format.R5G6B5);
// Create the bumpmap.
bumpMap = CreateBumpMap(256, 256, Format.V8U8);
if (bumpMap == null)
{
throw new InvalidOperationException();
}
// Create a square for rendering the background
if ((backgroundVertex == null) || (backgroundVertex.Disposed))
{
// We only need to create this buffer once
backgroundVertex = new VertexBuffer(typeof(CustomVertex.PositionTextured), 4, device, Usage.WriteOnly, CustomVertex.PositionTextured.Format, Pool.Default);
backgroundVertex.Created += new System.EventHandler(this.BackgroundVertexCreated);
// Call it manually the first time
this.BackgroundVertexCreated(backgroundVertex, null);
}
// See if EMBM and projected vertices are supported at the same time
// in the fixed-function shader. If not, switch to using a vertex shader.
isUsingVertexShader = false;
SetEMBMStates();
device.VertexShader = null;
device.VertexFormat = CustomVertex.PositionTextured.Format;
ValidateDeviceParams validParams = device.ValidateDevice();
if (validParams.Result != 0)
{
isUsingVertexShader = true;
}
// If TextureCaps.Projected is set, projected textures are computed
// per pixel, so this sample will work fine with just a quad for the water
// model. If it's not set, textures are projected per vertex rather than
// per pixel, so distortion will be visible unless we use more vertices.
if (Caps.TextureCaps.SupportsProjected && !isUsingVertexShader)
{
numVertx = 2; // Number of vertices in the ground grid along X
numVertz = 2; // Number of vertices in the ground grid along Z
}
else
{
numVertx = 8; // Number of vertices in the ground grid along X
numVertz = 8; // Number of vertices in the ground grid along Z
}
numTriangles = (numVertx - 1) * (numVertz - 1) * 2; // Number of triangles in the ground
// Create a square for rendering the water
if ((waterBuffer == null) || (waterBuffer.Disposed))
{
// We only need to create this buffer once
waterBuffer = new VertexBuffer(typeof(CustomVertex.PositionTextured), 3 * numTriangles, device, Usage.WriteOnly, CustomVertex.PositionTextured.Format, Pool.Default);
waterBuffer.Created += new System.EventHandler(this.WaterBufferCreated);
// Call it manually the first time
this.WaterBufferCreated(waterBuffer, null);
}
}
catch
{
SampleException e = new MediaNotFoundException();
HandleSampleException(e, ApplicationMessage.ApplicationMustExit);
throw e;
}
}
