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What's new in Direct2D

Here are some of the new additions to Direct2D for Windows 8.1.

What's new for Windows 8.1

The following features and APIs were added or updated for Windows 8.1.

Starting with Windows 8.1, Direct2D is built on top of Direct3D 11.2.

Geometry realizations

Starting in Windows Windows 8.1, Direct2D offers geometry realizations. Geometry realizations allow applications to improve geometry rendering performance in certain situations, without some of the drawbacks of rasterizing geometry to a bitmap. For more information, see the following topics:

Support for JPEG YCbCr images

Starting in Windows Windows 8.1, Direct2D provides support for rendering image data in the JPEG Y’CbCr format. Apps can render JPEG content in its native Y’CbCr representation instead of decompressing to BGRA. This can significantly reduce graphics memory consumption and resource creation time. For more information, see the following topics:

Support for block compressed formats (DDS files)

Starting in Windows Windows 8.1, Direct2D provides support for bitmaps that contain DXGI_FORMAT_BC1_UNORM, DXGI_FORMAT_BC2_UNORM, and DXGI_FORMAT_BC3_UNORM pixel data. Apps can replace their image assets with block compressed DDS images. This can significantly reduce graphics memory consumption and resource creation time. For more information, see the following topics:

Rendering priority

Starting in Windows Windows 8.1, Direct2D provides support for per-device rendering priority. This new feature allows apps to switch a device between normal rendering priority (the default) and low rendering priority (in which the device will not block other rendering tasks on the system). It is recommended that apps use low rendering priority for tasks that are not critical to user-responsiveness, such as pre-rendering content, rendering while minimized, and other operations that are typically performed in the background. For more information, see the following topics:

What's new for Windows 8

The following features and APIs were added or updated for Windows 8.

The new Direct2D interfaces are supported on Windows 7 with the Platform Update for Windows 7 installed.

Direct2D's semantics for devices and device contexts have been updated to more closely resemble the semantics used by Direct3D, and to provide concise operation on Windows Store apps. See Devices and device contexts for more info.

Selected related APIs:

The command list API allows you to share the rendering path for on screen rendering and printing. It also allows you to use primitives to create an image brush for filling primitives.

Selected related APIs:

Direct2D effects is a set of APIs, new in Windows 8, for applying high quality effects to images. It also includes APIs that allow you to make your own custom effects. See Introduction to Direct2D effects for more info.

Selected related APIs:

Starting with Windows 8, Direct2D includes additional APIs for building multithreaded apps. See Multithreaded Direct2D Apps for more info.

Selected related APIs:

 

 

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