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You can configure the OpenGL* Settings through the Intel® Graphics Media Accelerator Driver’s user interface (also referred to as Graphics Properties). To access these settings:
- Press Ctrl+Alt+F12 keys or right-click on the desktop and select Graphics Properties. For help, see How to open the Intel Graphics Properties window.
- Choose 3D Settings (Figure 1). This opens the control panel dialog box for OpenGL Settings (Figure 2).
The OpenGL Settings dialog box provides you with options to modify various OpenGL functions. Many applications make use of these settings. Such applications are usually games or other 3D applications that were developed using OpenGL libraries. In some cases, the applications require different settings to work.
You can change the value of each OpenGL setting or attribute (Table 1) or restore the default values to all attributes. Select the Apply button to save your changes.
Figure 1: 3D Settings button
Figure 2: OpenGL Settings
The following table provides information on the various OpenGL attributes that can be changed on the OpenGL Settings dialog box.
Table 1: OpenGL* Attributes:
The following sections describe each attribute and its values.
Asynchronous flip attribute
Off (default value) - Enables vertical synchronization (also known as vertical sync or VSYNC). Vertical synchronization allows a frame change to coincide with an analog monitor’s vertical blanking interval. This may help to reduce or eliminate tearing in the video, but may cause reduced frame rate since the frame change is delayed until the vertical blank interval.
On - Disables vertical synchronization.
Triple buffering attribute
A technique that may help to reduce or eliminate visual artifacts such as flickering, tearing, or shearing. This is done by using 3 buffers to minimize the delay in redrawing the image, for the cost of higher memory usage.
Default (default value) - Driver selects triple buffering based on available memory.
Off - Disables triple buffering.
On - Enables triple buffering.
Flipping policy attribute
Flip (default value) - In applications that run in full screen, enables flip multi-buffering. With flip operations, the render buffer is directly connected with screen and when it is rendered it is just swapped on to the screen with no copying occurring.
Blit - Enables blit multi-buffering which copies rendered buffer on to the screen. With blit operations, several bitmap patterns are combined into one using a raster operator. Applications running windowed (not full-screen) can only use blit operations.
Depth buffer bit depth attribute
Default (default value) - Depth value depends on the PixelFormat selected and the Windows* desktop bit depth.
16 Bit Depth Buffer - Forces a 16-bit depth buffer on PixelFormats that have a depth buffer.
24 Bit Depth Buffer - Forces a 24-bit depth buffer/8-bit stencil buffer on PixelFormats that have a depth buffer.
Force S3TC texture compression attribute
S3TC is a method of texture compression to reduce the texture size, for the cost of lower texture quality and higher processing power demand.
Off (default value) - Driver does not automatically compress all RGB and RGBA format texture images into S3 compressed format.
On - If S3TC extension is supported, the driver automatically compress all RGB and RGBA format texture images to kept them internally in S3TC format. It reduces the amount of required memory/allows to support more textures.
Force FXT1 texture compression attribute
FXT1 is another method of texture compression to reduce the texture size, for the cost of lower texture quality and higher processing power demand.
Off (default value) – Driver does not automatically compress all RGB and RGBA format texture images into FXT1 compressed format.
On - If FXT1 extension is supported, driver automatically compresses all RGB and RGBA format texture images into FXT1 compressed format.
Driver memory footprint attribute
Determines how much memory driver uses for resources like textures or buffers.
Normal (default value) - Driver automatically determines memory footprint based on available memory.
Low - Driver does not reduce memory footprint.
High - Driver unconditionally limits amount of used memory by changing maximum allowed texture size, reducing depth buffer precision and reducing amount of textures kept in memory.
Texture color depth attribute
Specifies a preferred bit depth for texture maps on devices that support multiple texture bit depths.
Desktop Color Depth (default value) - Texture depth matches the desktop bit depth.
16 Bits per Texel - Forces 16 bit textures for unsized formats only.
32 Bits per Texel - Forces 32 bit textures for unsized formats only.
Anisotropic filtering attribute
Anisotropic filtering enhances the final image quality when textures are used for surfaces that appear to be non-orthogonal to the screen, for the cost of performance.
Application Control (default value) - Filtering controlled by the application.
On - Enables anisotropic filtering.
Off - Disables anisotropic filtering.
Operating System:
| Windows XP Professional x64 Edition*, Windows Vista 64*, Windows Vista *, Windows Vista 32*, Windows 2000 *, Windows XP Professional*, Windows XP Home Edition*, Windows XP Tablet PC Edition*, Windows XP Media Center Edition* |
This applies to:
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