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Its video memory manager can manipulate video memory with ease, taking full advantage of the blitting and color decompression capabilities of different types of display adapters. Because DirectDraw is a 2D API, it contains commands for 2D rendering and does not support 3D hardware acceleration.
The System tab displays the current DirectX version, the computer's hostname, the operating system's version, information on the system BIOS, and other data.The DirectX Files tab displays information about the versions of specific DirectX system files, which are portable executables or dynamic-link libraries (DLLs).
Prior to DirectX 10, DirectX runtime was designed to be backward compatible with older drivers, meaning that newer versions of the APIs were designed to interoperate with older drivers written against a previous version's DDI. The application programmer had to query the available hardware capabilities using a complex system of "cap bits" each ...
The first version of Direct3D shipped in DirectX 2.0 (June 2, 1996) and DirectX 3.0 (September 26, 1996). Direct3D initially implemented an "immediate mode" 3D API and layered upon it a "retained mode" 3D API. [18] Both types of API were already offered with the second release of Reality Lab before Direct3D was released. [16]
GDI was present in the initial release of Windows. MS-DOS programs had manipulated the graphics hardware using software interrupts (sometimes via the Video BIOS) and by manipulating video memory directly. Code written in this way expects that it is the only user of the video memory, which was not tenable on multi-tasked environment, such as ...
Another buffer is allocated in the video memory to represent the DirectX surface, which is used as the texture for the window meshes. The system memory buffer is converted to the DirectX surface separately and kept in sync. This round-about route is required because GDI cannot output directly in DirectX pixel format.
WDDM drivers allow video memory to be virtualized, [6] and video data to be paged out of video memory into system RAM. In case the video memory available turns out to be insufficient to store all the video data and textures, currently unused data is moved out to system RAM or to the disk. When the swapped out data is needed, it is fetched back.
An updated version of Direct2D was launched with Windows 8 in October 2012. [8] It was also backported to Windows 7 SP1 (but not to Windows Vista) via the Windows 7 platform update . [ 9 ] [ 10 ] [ 11 ] The original version of Direct2D was tied to DirectX 11 (in hardware, up to Direct3D 10.1 is used), whereas this version of Direct2D integrates ...