Represents the capabilities of the hardware exposed through the Microsoft Direct3D object.

Definition

Visual Basic	Public Structure Caps
C#	public struct Caps
C++	public value class Caps sealed
JScript	In JScript, you can use structures, but you cannot define your own.

Members Table

The following table lists the members exposed by the object.

Methods

Method	Description
Caps	Creates a new instance of the Caps structure.
ToString	Obtains a string representation of the current instance.

Properties

Property	Description
AdapterOrdinal	Retrieves a number that represents the ordinal of the adapter on which the Device was created.
AdapterOrdinalInGroup	Retrieves a number that indicates the order in which heads are referenced by the application programming object.
AlphaCompareCaps	Retrieves an object that contains all alpha-test comparison capabilities.
CubeTextureFilterCaps	Retrieves texture-filtering capabilities for a CubeTexture object.
CursorCaps	Retrieves an object that indicates the available hardware support for cursors.
DeclTypes	Retrieves an object that describes the vertex data types a device supports.
DestinationBlendCaps	Retrieves an object that indicates a device's destination blending capabilities.
DeviceCaps	Retrieves an object that identifies a device's capabilities.
DeviceType	Retrieves an object that identifies the type of resources used for processing vertices.
DriverCaps	Retrieves an object that identifies driver-specific capabilities.
ExtentsAdjust	Retrieves a value that indicates the number of pixels to adjust the extents rectangle outward to accommodate antialiasing kernels.
GuardBandBottom	Retrieves a value that indicates the screen-space coordinate of the bottom guard band clipping region.
GuardBandLeft	Retrieves a value that indicates the screen-space coordinate of the left guard band clipping region.
GuardBandRight	Retrieves a value that indicates the screen-space coordinate of the right guard band clipping region.
GuardBandTop	Retrieves a value that indicates the screen-space coordinate of the top guard band clipping region.
LineCaps	Retrieves an object that defines the capabilities for line-drawing primitives.
MasterAdapterOrdinal	Retrieves a value that indicates which device is the master for the current subordinate.
MaxActiveLights	Retrieves the maximum number of lights that can be active simultaneously.
MaxAnisotropy	Retrieves a value that indicates the maximum valid value for anisotropic filtering.
MaxNPatchTessellationLevel	Retrieves a value that indicates the maximum number of N-patch subdivision levels.
MaxPixelShader30InstructionSlots	Retrieves a value that indicates the maximum number of vertex shader instruction slots supported.
MaxPointSize	Retrieves the maximum size of a point primitive.
MaxPrimitiveCount	Retrieves the maximum number of primitives for each Device.DrawPrimitives call.
MaxSimultaneousTextures	Retrieves the maximum number of textures that can simultaneously be bound to the texture-blending stages.
MaxStreams	Indicates the maximum number of concurrent data streams for Device.SetStreamSource.
MaxStreamStride	Retrieves the maximum stride for Device.SetStreamSource.
MaxTextureAspectRatio	Retrieves the maximum texture aspect ratio supported by the hardware.
MaxTextureBlendStages	Retrieves the maximum number of texture-blending stages supported.
MaxTextureHeight	Retrieves the maximum texture height for the current device.
MaxTextureRepeat	Retrieves the maximum range of the integer bits for post-normalized texture coordinates.
MaxTextureWidth	Retrieves the maximum texture width for the current device.
MaxUserClipPlanes	Retrieves the maximum number of user-defined clipping planes supported.
MaxVertexBlendMatrices	Retrieves the maximum number of matrices that the current device can apply when performing multimatrix vertex blending.
MaxVertexBlendMatrixIndex	Retrieves the maximum matrix index that can be indexed into using pre-vertex indices.
MaxVertexIndex	Retrieves the maximum size of indices supported for hardware vertex processing.
MaxVertexShader30InstructionSlots	Retrieves the maximum number of vertex shader instruction slots supported.
MaxVertexShaderConst	Retrieves the number of vertex shader registers that are reserved for constants.
MaxVertexW	Retrieves the maximum w-based depth value that a device supports.
MaxVolumeExtent	Retrieves the maximum value for any of the three dimensions (width, height, and depth) of a volume texture.
NumberOfAdaptersInGroup	Retrieves the number of adapters in the current adapter group.
NumberSimultaneousRts	Retrieves the number of simultaneous render targets.
PixelShader1xMaxValue	Retrieves the maximum value of a pixel shader arithmetic component.
PixelShaderCaps	Retrieves a structure that contains the supported pixel shader capabilities.
PixelShaderVersion	Retrieves an object that reports the main and subordinate pixel shader versions.
PresentationIntervals	Retrieves a set of values that represent the available presentation swap intervals.
PrimitiveMiscCaps	Retrieves miscellaneous driver primitive capabilities.
RasterCaps	Retrieves information about raster drawing capabilities.
ShadeCaps	Retrieves shading operation capabilities.
SourceBlendCaps	Retrieves the source-blending capabilities.
StencilCaps	Retrieves an object that indicates the supported stencil buffer operations.
StretchRectangleFilterCaps	Retrieves a structure that describes the operations supported by StretchRectangle.
TextureAddressCaps	Retrieves a structure that contains texture-addressing capabilities for Texture objects.
TextureCaps	Retrieves a structure that contains miscellaneous texture-mapping capabilities.
TextureFilterCaps	Retrieves a structure that contains texture-filtering capabilities for Texture objects.
TextureOperationCaps	Retrieves a structure that describes supported texture operations.
VertexFormatCaps	Retrieves a structure that describes supported vertex format capabilities.
VertexProcessingCaps	Retrieves a structure that contains supported vertex processing capabilities.
VertexShaderCaps	Retrieves a structure that contains supported vertex shader capabilities.
VertexShaderVersion	Retrieves a structure that indicates the main and subordinate vertex shader versions supported by a device.
VertexTextureFilterCaps	Retrieves a structure that indicates which types of vertex shader texture filters are supported.
VolumeTextureAddressCaps	Retrieves a structure that indicates the supported texture-addressing capabilities for VolumeTexture objects.
VolumeTextureFilterCaps	Retrieves a structure that indicates the texture-filtering capabilities of VolumeTexture objects.
ZCompareCaps	Retrieves a structure that contains the supported z-buffer comparison capabilities.

Remarks

The MaxTextureBlendStages and MaxSimultaneousTextures members might seem similar, but they contain different information. The MaxTextureBlendStages member contains the total number of texture-blending stages supported by the current device, while the MaxSimultaneousTextures member describes how many of those stages can have textures bound to them by using the Device.SetTexture method.

Performance problems can occur if a texture is used and then modified during a scene. Ensure that no texture used in the current Device.BeginScene ... Device.EndScene block is evicted unless absolutely necessary. In the case of extremely high texture usage within a scene, the results are undefined. This occurs when a texture used in the scene is modified and no spare texture memory is available. For such systems, the contents of the z-buffer become invalid at Device.EndScene. Applications should not call Device.UpdateSurface to or from the back buffer on this type of hardware inside a BeginScene ... EndScene pair. In addition, applications should not try to access the z-buffer if the Caps.RasterCaps.SupportsZBufferLessHsr capability flag is set to true. Finally, applications should not lock the back buffer or the z-buffer inside a BeginScene ... EndScene pair.

Structure Information

Namespace	Microsoft.DirectX.Direct3D
Assembly	Microsoft.DirectX.Direct3D (microsoft.directx.direct3d.dll)
Strong Name	Microsoft.DirectX.Direct3D,  Version=1.0.900.0,  Culture=neutral,  PublicKeyToken=d3231b57b74a1492

See Also

• DeviceCaps