D3DPRIMCAPS

The D3DPRIMCAPS structure defines the capabilities for each primitive type. This structure is used when creating a device and when querying the capabilities of a device. This structure defines several members in the D3DDEVICEDESC structure.

typedef struct _D3DPrimCaps { 
    DWORD dwSize;                // size of structure
    DWORD dwMiscCaps;            // miscellaneous caps
    DWORD dwRasterCaps;          // raster caps
    DWORD dwZCmpCaps;            // z-comparison caps
    DWORD dwSrcBlendCaps;        // source blending caps
    DWORD dwDestBlendCaps;       // destination blending caps
    DWORD dwAlphaCmpCaps;        // alpha-test comparison caps
    DWORD dwShadeCaps;           // shading caps
    DWORD dwTextureCaps;         // texture caps
    DWORD dwTextureFilterCaps;   // texture filtering caps
    DWORD dwTextureBlendCaps;    // texture blending caps
    DWORD dwTextureAddressCaps;  // texture addressing caps
    DWORD dwStippleWidth;        // stipple width
    DWORD dwStippleHeight;       // stipple height
} D3DPRIMCAPS, *LPD3DPRIMCAPS; 
 

Members

dwSize

Size, in bytes, of this structure. This member must be initialized before the structure is used.

dwMiscCaps

General capabilities for this primitive. This member can be one or more of the following:

D3DPMISCCAPS_CONFORMANT

The device conforms to the OpenGL standard.

D3DPMISCCAPS_CULLCCW

The driver supports counterclockwise culling through the D3DRENDERSTATE_CULLMODE state. (This applies only to triangle primitives.) This corresponds to the D3DCULL_CCW member of the D3DCULL enumerated type.

D3DPMISCCAPS_CULLCW

The driver supports clockwise triangle culling through the D3DRENDERSTATE_CULLMODE state. (This applies only to triangle primitives.) This corresponds to the D3DCULL_CW member of the D3DCULL enumerated type.

D3DPMISCCAPS_CULLNONE

The driver does not perform triangle culling. This corresponds to the D3DCULL_NONE member of the D3DCULL enumerated type.

D3DPMISCCAPS_LINEPATTERNREP

The driver can handle values other than 1 in the wRepeatFactor member of the D3DLINEPATTERN structure. (This applies only to line-drawing primitives.)

D3DPMISCCAPS_MASKPLANES

The device can perform a bitmask of color planes.

D3DPMISCCAPS_MASKZ

The device can enable and disable modification of the depth-buffer on pixel operations.

dwRasterCaps

Information on raster-drawing capabilities. This member can be one or more of the following:

D3DPRASTERCAPS_ANISOTROPY

The device supports anisotropic filtering. For more information, see D3DRENDERSTATE_ANISOTROPY in the D3DRENDERSTATETYPE structure.

This flag was introduced in DirectX 5.0.

D3DPRASTERCAPS_ANTIALIASEDGES

The device can antialias lines forming the convex outline of objects. For more information, see D3DRENDERSTATE_EDGEANTIALIAS in the D3DRENDERSTATETYPE structure.

This flag was introduced in DirectX 5.0.

D3DPRASTERCAPS_ANTIALIASSORTDEPENDENT

The device supports antialiasing that is dependent on the sort order of the polygons (back-to-front or front-to-back). The application must draw polygons in the right order for antialiasing to occur. For more information, see the D3DANTIALIASMODE enumerated type.

This flag was introduced in DirectX 5.0.

D3DPRASTERCAPS_ANTIALIASSORTINDEPENDENT

The device supports antialiasing that is not dependent on the sort order of the polygons. For more information, see the D3DANTIALIASMODE enumerated type.

This flag was introduced in DirectX 5.0.

D3DPRASTERCAPS_DITHER

The device can dither to improve color resolution.

D3DPRASTERCAPS_FOGRANGE

The device supports range-based fog. In range-based fog, the distance of an object from the viewer is used to compute fog effects, not the depth of the object (that is, the z-coordinate) in the scene. For more information, see Range-based Fog.

This flag was introduced in DirectX 5.0.

D3DPRASTERCAPS_FOGTABLE

The device calculates the fog value by referring to a lookup table containing fog values that are indexed to the depth of a given pixel.

D3DPRASTERCAPS_FOGVERTEX

The device calculates the fog value during the lighting operation, places the value into the alpha component of the D3DCOLOR value given for the specular member of the D3DTLVERTEX structure, and interpolates the fog value during rasterization.

D3DPRASTERCAPS_MIPMAPLODBIAS

The device supports level-of-detail (LOD) bias adjustments. These bias adjustments enable an application to make a mipmap appear crisper or less sharp than it normally would. For more information about LOD bias in mipmaps, see D3DRENDERSTATE_MIPMAPLODBIAS.

This flag was introduced in DirectX 5.0.

D3DPRASTERCAPS_PAT

The driver can perform patterned drawing (lines or fills with D3DRENDERSTATE_LINEPATTERN or one of the D3DRENDERSTATE_STIPPLEPATTERN render states) for the primitive being queried.

D3DPRASTERCAPS_ROP2

The device can support raster operations other than R2_COPYPEN.

D3DPRASTERCAPS_STIPPLE

The device can stipple polygons to simulate translucency.

D3DPRASTERCAPS_SUBPIXEL

The device performs subpixel placement of z, color, and texture data, rather than working with the nearest integer pixel coordinate. This helps avoid bleed-through due to z imprecision, and jitter of color and texture values for pixels. Note that there is no corresponding state that can be enabled and disabled; the device either performs subpixel placement or it does not, and this bit is present only so that the Direct3D client will be better able to determine what the rendering quality will be.

D3DPRASTERCAPS_SUBPIXELX

The device is subpixel accurate along the x-axis only and is clamped to an integer y-axis scan line. For information about subpixel accuracy, see D3DPRASTERCAPS_SUBPIXEL.

D3DPRASTERCAPS_TRANSLUCENTSORTINDEPENDENT

The device supports translucency that is not dependent on the sort order of the polygons. For more information, see the D3DRENDERSTATE_TRANSLUCENTSORTINDEPENDENT.

D3DPRASTERCAPS_WBUFFER

The device supports depth buffering using w. For more information, see Depth Buffers.

D3DPRASTERCAPS_WFOG

The device supports w-based fog. W-based fog is used when a perspective projection matrix is specified, but affine projections will still use z-based fog. The system considers a projection matrix that contains a non-zero value in the [3][4] element to be a perspective projection matrix.

D3DPRASTERCAPS_XOR

The device can support XOR operations. If this flag is not set but D3DPRIM_RASTER_ROP2 is set, then XOR operations must still be supported.

D3DPRASTERCAPS_ZBIAS

The device supports z-bias values. These are integer values assigned to polygons that allow physically coplanar polygons to appear separate. For more information, see D3DRENDERSTATE_ZBIAS in the D3DRENDERSTATETYPE enumerated type.

This flag was introduced in DirectX 5.0.

D3DPRASTERCAPS_ZBUFFERLESSHSR

The device can perform hidden-surface removal (HSR) without requiring the application to sort polygons, and without requiring the allocation of a depth-buffer. This leaves more video memory for textures. The method used to perform hidden-surface removal is hardware-dependent and is transparent to the application.

Z-bufferless HSR is performed if no depth-buffer surface is attached to the rendering-target surface and the depth-buffer comparison test is enabled (that is, when the state value associated with the D3DRENDERSTATE_ZENABLE enumeration constant is set to TRUE).

This flag was introduced in DirectX 5.0.

D3DPRASTERCAPS_ZTEST

The device can perform z-test operations. This effectively renders a primitive and indicates whether any z pixels would have been rendered.

dwZCmpCaps

Z-buffer comparison functions that the driver can perform. This member can be one or more of the following:

D3DPCMPCAPS_ALWAYS

Always pass the z test.

D3DPCMPCAPS_EQUAL

Pass the z test if the new z equals the current z.

D3DPCMPCAPS_GREATER

Pass the z test if the new z is greater than the current z.

D3DPCMPCAPS_GREATEREQUAL

Pass the z test if the new z is greater than or equal to the current z.

D3DPCMPCAPS_LESS

Pass the z test if the new z is less than the current z.

D3DPCMPCAPS_LESSEQUAL

Pass the z test if the new z is less than or equal to the current z.

D3DPCMPCAPS_NEVER

Always fail the z test.

D3DPCMPCAPS_NOTEQUAL

Pass the z test if the new z does not equal the current z.

dwSrcBlendCaps

Source blending capabilities. This member can be one or more of the following. (The RGBA values of the source and destination are indicated with the subscripts s and d.)

D3DPBLENDCAPS_BOTHINVSRCALPHA

Source blend factor is (1-A_s, 1-A_s, 1-A_s, 1-A_s) and destination blend factor is (A_s, A_s, A_s, A_s); the destination blend selection is overridden.

D3DPBLENDCAPS_BOTHSRCALPHA

The driver supports the D3DBLEND_BOTHSRCALPHA blend mode. (This blend mode is obsolete for DirectX 6.0 and later. For more information, see D3DBLEND.)

D3DPBLENDCAPS_DESTALPHA

Blend factor is (A_d, A_d, A_d, A_d).

D3DPBLENDCAPS_DESTCOLOR

Blend factor is (R_d, G_d, B_d, A_d).

D3DPBLENDCAPS_INVDESTALPHA

Blend factor is (1-A_d, 1-A_d, 1-A_d, 1-A_d).

D3DPBLENDCAPS_INVDESTCOLOR

Blend factor is (1-R_d, 1-G_d, 1-B_d, 1-A_d).

D3DPBLENDCAPS_INVSRCALPHA

Blend factor is (1-A_s, 1-A_s, 1-A_s, 1-A_s).

D3DPBLENDCAPS_INVSRCCOLOR

Blend factor is (1-R_d, 1-G_d, 1-B_d, 1-A_d).

D3DPBLENDCAPS_ONE

Blend factor is (1, 1, 1, 1).

D3DPBLENDCAPS_SRCALPHA

Blend factor is (A_s, A_s, A_s, A_s).

D3DPBLENDCAPS_SRCALPHASAT

Blend factor is (f, f, f, 1); f = min(A_s, 1-A_d).

D3DPBLENDCAPS_SRCCOLOR

Blend factor is (R_s, G_s, B_s, A_s).

D3DPBLENDCAPS_ZERO

Blend factor is (0, 0, 0, 0).

dwDestBlendCaps

Destination blending capabilities. This member can be the same capabilities that are defined for the dwSrcBlendCaps member.

dwAlphaCmpCaps

Alpha-test comparison functions that the driver can perform. This member can include the same capability flags defined for the dwZCmpCaps member. If this member contains only the D3DPCMPCAPS_ALWAYS capability or only the D3DPCMPCAPS_NEVER capability, the driver does not support alpha tests. Otherwise, the flags identify the individual comparisons that are supported for alpha testing.

dwShadeCaps

Shading operations that the device can perform. It is assumed, in general, that if a device supports a given command (such as D3DOP_TRIANGLE) at all, it supports the D3DSHADE_FLAT mode (as specified in the D3DSHADEMODE enumerated type). This flag specifies whether the driver can also support Gouraud and Phong shading and whether alpha color components are supported for each of the three color-generation modes. When alpha components are not supported in a given mode, the alpha value of colors generated in that mode is implicitly 255. This is the maximum possible alpha (that is, the alpha component is at full intensity).

With the monochromatic shade modes, the blue channel of the specular component is interpreted as a white intensity. (This is controlled by the D3DRENDERSTATE_MONOENABLE render state.)

The color, specular highlights, fog, and alpha interpolants of a triangle each have capability flags that an application can use to find out how they are implemented by the device driver. These are modified by the shade mode, color model, and by whether the alpha component of a color is blended or stippled. For more information, see 3-D Primitives.

This member can be one or more of the following:

D3DPSHADECAPS_ALPHAFLATBLEND
D3DPSHADECAPS_ALPHAFLATSTIPPLED

Device can support an alpha component for flat blended and stippled transparency, respectively (the D3DSHADE_FLAT state for the D3DSHADEMODE enumerated type). In these modes, the alpha color component for a primitive is provided as part of the color for the first vertex of the primitive.

D3DPSHADECAPS_ALPHAGOURAUDBLEND
D3DPSHADECAPS_ALPHAGOURAUDSTIPPLED

Device can support an alpha component for Gouraud blended and stippled transparency, respectively (the D3DSHADE_GOURAUD state for the D3DSHADEMODE enumerated type). In these modes, the alpha color component for a primitive is provided at vertices and interpolated across a face along with the other color components.

D3DPSHADECAPS_ALPHAPHONGBLEND
D3DPSHADECAPS_ALPHAPHONGSTIPPLED

Device can support an alpha component for Phong blended and stippled transparency, respectively (the D3DSHADE_PHONG state for the D3DSHADEMODE enumerated type). In these modes, vertex parameters are reevaluated on a per-pixel basis, applying lighting effects for the red, green, and blue color components. Phong shading is not currently supported.

D3DPSHADECAPS_COLORFLATMONO
D3DPSHADECAPS_COLORFLATRGB

Device can support colored flat shading in the D3DCOLOR_MONO and D3DCOLOR_RGB color models, respectively. In these modes, the color component for a primitive is provided as part of the color for the first vertex of the primitive. In monochromatic lighting modes, only the blue component of the color is interpolated; in RGB lighting modes, the red, green, and blue components are interpolated.

D3DPSHADECAPS_COLORGOURAUDMONO
D3DPSHADECAPS_COLORGOURAUDRGB

Device can support colored Gouraud shading in the D3DCOLOR_MONO and D3DCOLOR_RGB color models, respectively. In these modes, the color component for a primitive is provided at vertices and interpolated across a face along with the other color components. In monochromatic lighting modes, only the blue component of the color is interpolated; in RGB lighting modes, the red, green, and blue components are interpolated.

D3DPSHADECAPS_COLORPHONGMONO
D3DPSHADECAPS_COLORPHONGRGB

Device can support colored Phong shading in the D3DCOLOR_MONO and D3DCOLOR_RGB color models, respectively. In these modes, vertex parameters are reevaluated on a per-pixel basis. Lighting effects are applied for the red, green, and blue color components in RGB mode, and for the blue component only for monochromatic mode. Phong shading is not currently supported.

D3DPSHADECAPS_FOGFLAT
D3DPSHADECAPS_FOGGOURAUD
D3DPSHADECAPS_FOGPHONG

Device can support fog in the flat, Gouraud, and Phong shading models, respectively. Phong shading is not currently supported.

D3DPSHADECAPS_SPECULARFLATMONO
D3DPSHADECAPS_SPECULARFLATRGB

Device can support specular highlights in flat shading in the D3DCOLOR_MONO and D3DCOLOR_RGB color models, respectively.

D3DPSHADECAPS_SPECULARGOURAUDMONO
D3DPSHADECAPS_SPECULARGOURAUDRGB

Device can support specular highlights in Gouraud shading in the D3DCOLOR_MONO and D3DCOLOR_RGB color models, respectively.

D3DPSHADECAPS_SPECULARPHONGMONO
D3DPSHADECAPS_SPECULARPHONGRGB

Device can support specular highlights in Phong shading in the D3DCOLOR_MONO and D3DCOLOR_RGB color models, respectively. Phong shading is not currently supported.

dwTextureCaps

Miscellaneous texture-mapping capabilities. This member can be one or more of the following:

D3DPTEXTURECAPS_ALPHA

Supports RGBA textures in the D3DTBLEND_DECAL and D3DTBLEND_MODULATE texture filtering modes. If this capability is not set, then only RGB textures are supported in those modes. Regardless of the setting of this flag, alpha must always be supported in D3DTBLEND_DECALMASK, D3DTBLEND_DECALALPHA, and D3DTBLEND_MODULATEALPHA filtering modes whenever those filtering modes are available.

D3DPTEXTURECAPS_ALPHAPALETTE

Supports palettized texture surfaces whose palettes contain alpha information (see DDPCAPS_ALPHA in the DDCAPS structure).

D3DPTEXTURECAPS_BORDER

Superseded by D3DPTADDRESSCAPS_BORDER.

D3DPTEXTURECAPS_NONPOW2CONDITIONAL

Conditionally supports the use of textures with dimensions that are not powers of two. A device that exposes this capability can use such a texture if all of the following requirements are met.

• The texture addressing mode for the texture stage is set to D3DTADDRESS_CLAMP.
• Texture wrapping for the texture stage is disabled (D3DRENDERSTATE_WRAPn set to zero).
• Mipmapping is not in use. (Mipmapped textures must have dimensions that are powers of two.)
• Anisotropic texture filtering is disabled.

D3DPTEXTURECAPS_PERSPECTIVE

Perspective correction is supported.

D3DPTEXTURECAPS_POW2

All nonmipmapped textures must have widths and heights specified as powers of two if this flag is set. (Note that all mipmapped textures must always have dimensions that are powers of two.)

D3DPTEXTURECAPS_SQUAREONLY

All textures must be square.

D3DPTEXTURECAPS_TEXREPEATNOTSCALEDBYSIZE

Texture indices are not scaled by the texture size prior to interpolation.

D3DPTEXTURECAPS_TRANSPARENCY

Texture transparency is supported. (Only those texels that are not the current transparent color are drawn.)

dwTextureFilterCaps

Texture-map filtering capabilities. General texture filtering flags reflect which texture filtering modes you can set for the D3DRENDERSTATE_TEXTUREMAG, D3DRENDERSTATE_TEXTUREMIN render states. Per-stage filtering capabilities reflect which filtering modes are supported for texture stages when performing multiple texture blending with the IDirect3DDevice3 interface. This member be can any combination of the following general and per-stage texture filtering flags:

General texture filtering flags

D3DPTFILTERCAPS_LINEAR

Bilinear filtering. Chooses the texel that has nearest coordinates, then performs a weighted average with the four surrounding texels to determine the final color. This applies to both zooming in and zooming out. If either zooming in or zooming out is supported, then both must be supported.

D3DPTFILTERCAPS_LINEARMIPLINEAR

Trilinear interpolation between mipmaps. Performs bilinear filtering on the two nearest mipmaps, then interpolates linearly between the two colors to determine a final color.

D3DPTFILTERCAPS_LINEARMIPNEAREST

Linear interpolation between two point sampled mipmaps. Chooses the nearest texel from the two closest mipmap levels, then performs linear interpolation between them.

D3DPTFILTERCAPS_MIPLINEAR

Nearest mipmapping, with bilinear filtering applied to the result. Chooses the texel from the appropriate mipmap that has nearest coordinates, then performs a weighted average with the four surrounding texels to determine the final color.

D3DPTFILTERCAPS_MIPNEAREST

Nearest mipmapping. Chooses the texel from the appropriate mipmap with coordinates nearest to the desired pixel value.

D3DPTFILTERCAPS_NEAREST

Point sampling. The texel with coordinates nearest to the desired pixel value is used. This applies to both zooming in and zooming out. If either zooming in or zooming out is supported, then both must be supported.

Per-stage texture filtering flags

D3DPTFILTERCAPS_MAGFAFLATCUBIC

The device supports per-stage flat-cubic filtering for magnifying textures. The flat-cubic magnification filter is represented by the D3DTFG_FLATCUBIC member of the D3DTEXTUREMAGFILTER enumerated type.

D3DPTFILTERCAPS_MAGFANISOTROPIC

The device supports per-stage anisotropic filtering for magnifying textures. The anisotropic magnification filter is represented by the D3DTFG_ANISOTROPIC member of the D3DTEXTUREMAGFILTER enumerated type.

D3DPTFILTERCAPS_MAGFGAUSSIANCUBIC

The device supports the per-stage Gaussian-cubic filtering for magnifying textures. The Gaussian-cubic magnification filter is represented by the D3DTFG_GAUSSIANCUBIC member of the D3DTEXTUREMAGFILTER enumerated type.

D3DPTFILTERCAPS_MAGFLINEAR

The device supports per-stage bilinear-interpolation filtering for magnifying textures. The bilinear-interpolation magnification filter is represented by the D3DTFG_LINEAR member of the D3DTEXTUREMAGFILTER enumerated type.

D3DPTFILTERCAPS_MAGFPOINT

The device supports per-stage point-sampled filtering for magnifying textures. The point-sample magnification filter is represented by the D3DTFG_POINT member of the D3DTEXTUREMAGFILTER enumerated type.

D3DPTFILTERCAPS_MINFANISOTROPIC

The device supports per-stage anisotropic filtering for minifying textures. The anisotropic minification filter is represented by the D3DTFN_ANISOTROPIC member of the D3DTEXTUREMINFILTER enumerated type.

D3DPTFILTERCAPS_MINFLINEAR

The device supports per-stage bilinear-interpolation filtering for minifying textures. The bilinear minification filter is represented by the D3DTFN_LINEAR member of the D3DTEXTUREMINFILTER enumerated type.

D3DPTFILTERCAPS_MINFPOINT

The device supports per-stage point-sampled filtering for minifying textures. The point-sample minification filter is represented by the D3DTFN_POINT member of the D3DTEXTUREMINFILTER enumerated type.

D3DPTFILTERCAPS_MIPFLINEAR

The device supports per-stage trilinear-interpolation filtering for mipmaps. The trilinear-interpolation mipmapping filter is represented by the D3DTFP_LINEAR member of the D3DTEXTUREMIPFILTER enumerated type.

D3DPTFILTERCAPS_MIPFPOINT

The device supports per-stage point-sampled filtering for mipmaps. The point-sample mipmapping filter is represented by the D3DTFP_POINT member of the D3DTEXTUREMIPFILTER enumerated type.

dwTextureBlendCaps

Texture-blending capabilities. See the D3DTEXTUREBLEND enumerated type for discussions of the various texture-blending modes. This member can be one or more of the following:

D3DPTBLENDCAPS_ADD

Supports the additive texture-blending mode, in which the Gouraud interpolants are added to the texture lookup with saturation semantics. This capability corresponds to the D3DTBLEND_ADD member of the D3DTEXTUREBLEND enumerated type.

This flag was introduced in DirectX 5.0.

D3DPTBLENDCAPS_COPY

Copy mode texture-blending (D3DTBLEND_COPY from the D3DTEXTUREBLEND enumerated type) is supported.

D3DPTBLENDCAPS_DECAL

Decal texture-blending mode (D3DTBLEND_DECAL from the D3DTEXTUREBLEND enumerated type) is supported.

D3DPTBLENDCAPS_DECALALPHA

Decal-alpha texture-blending mode (D3DTBLEND_DECALALPHA from the D3DTEXTUREBLEND enumerated type) is supported.

D3DPTBLENDCAPS_DECALMASK

Decal-mask texture-blending mode (D3DTBLEND_DECALMASK from the D3DTEXTUREBLEND enumerated type) is supported.

D3DPTBLENDCAPS_MODULATE

Modulate texture-blending mode (D3DTBLEND_MODULATE from the D3DTEXTUREBLEND enumerated type) is supported.

D3DPTBLENDCAPS_MODULATEALPHA

Modulate-alpha texture-blending mode (D3DTBLEND_MODULATEALPHA from the D3DTEXTUREBLEND enumerated type) is supported.

D3DPTBLENDCAPS_MODULATEMASK

Modulate-mask texture-blending mode (D3DTBLEND_MODULATEMASK from the D3DTEXTUREBLEND enumerated type) is supported.

dwTextureAddressCaps

Texture-addressing capabilities. This member can be one or more of the following:

D3DPTADDRESSCAPS_BORDER

Device supports setting coordinates outside the range [0.0, 1.0] to the border color, as specified by the D3DRENDERSTATE_BORDERCOLOR render state. This ability corresponds to the D3DTADDRESS_BORDER texture-addressing mode.

This flag was introduced in DirectX 5.0.

D3DPTADDRESSCAPS_CLAMP

Device can clamp textures to addresses.

D3DPTADDRESSCAPS_INDEPENDENTUV

Device can separate the texture-addressing modes of the u and v coordinates of the texture. This ability corresponds to the D3DRENDERSTATE_TEXTUREADDRESSU and D3DRENDERSTATE_TEXTUREADDRESSV render-state values.

This flag was introduced in DirectX 5.0.

D3DPTADDRESSCAPS_MIRROR

Device can mirror textures to addresses.

D3DPTADDRESSCAPS_WRAP

Device can wrap textures to addresses.

dwStippleWidth and dwStippleHeight

Maximum width and height of the supported stipple (up to 32×32).

QuickInfo

  Windows NT/2000: Requires Windows NT 4.0 SP3 or later.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Header: Declared in d3dcaps.h.