DirectX Transform C++ Samples

The Microsoft® DirectX® Media Software Development Kit (SDK) provides a number of basic C++ code samples to help you learn about the features of the transforms.

The source code and Microsoft® Visual Studio® projects for each sample are located in the \DXMedia\Samples\Multimedia\DTrans\C++\ folder. If you need assistance configuring Visual Studio to compile these samples, consult the Building DirectX Transform Samples and Applications article.

For more information, see the following topics.

Code Walk-Throughs—describes the code walk-through articles
Sample Applications—describes the C++ samples included with the DirectX Media SDK
Building DirectX Transform Samples and Applications—describes how to build the samples using Microsoft® Visual C++®

Code Walk-Throughs

These articles describe following examples in a thorough, step-by-step manner.

Article title	Description
The Wipe Transform	This sample shows how to write a 2-D image transform.
The Ripple Transform	This sample shows how to write a 3-D mesh transform.
The WipeDlg Application	This sample uses the transform contained in Wipe.dll for a Microsoft® Windows® application.

Sample Applications

These samples show how to use transforms in Windows applications. There are instructive comments in the source code, and prepared Visual Studio projects for you to use.

Sample folder name	Description
DXSurf1	This sample shows how to use a DXSurface to load an image file and display it as a second, full-screen exclusive mode DXSurface.
DXSurf2	This sample shows how DXSurfaces enable alpha blending for images. The application fades one image in and out over a background image. The images are loaded into DXSurfaces, which are attached to a DXSurfaceModifier (Surface Modifier) foreground and background surfaces. The opacity of the foreground image over the background is changed with the Surface Modifier in a timed loop.
DXSurf3	This sample shows how to use a transform to scale an image to fit a window. It also manipulates the color components of DXSurface samples, and composites the result over the scaled image.
SurfMod	This sample shows how Surface Modifiers can be used to combine images in creative ways. The sample consists of 12 frames that can be changed with the right and left arrow keys. Each frame displays the result of a different Surface Modifier set up. At the bottom of each frame in red type are the properties of the current Surface Modifier and in green type are notes or hints that can be helpful when using Surface Modifiers in this way. Because they work well with Surface Modifiers, lookup tables are also demonstrated briefly in the sample.
Grad	This sample shows how to create a procedural surface. The surface is a four-color gradient image, built by specifying a color for each corner of a DXSurface. The sample shows how to implement your own DXSurface and override the CDXARGBReadPtr::FillSamples function to produce the transform output.
GeoTrans	This sample shows how to use 3-D transforms and meshes and display the result in a window.