DDRAW_CAPS - NtDoc
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The DDRAW_CAPS structure describes general Microsoft DirectDraw capabilities that the user-mode display driver supports.
Caps [out]A valid bitwise OR of the following general capability bits that the driver supports.
| Capability bit | Meaning |
|---|---|
| DDRAW_CAPS_ZBLTS | Z-buffers can be used in bit-block transfer (bitblt) operations. |
| DDRAW_CAPS_COLORKEY | Some form of color key can be used in either overlay or bitblt operations. For more specific color key capability information, see the CKeyCaps member. |
| DDRAW_CAPS_BLTDEPTHFILL | Z-buffers can be depth-filled in bitblt operations. |
Caps2 [out]A valid bitwise OR of more of the following general capability bits that the driver supports.
| Capability bit | Meaning |
|---|---|
| DDRAW_CAPS2_VIDEOPORT | A hardware video port can be used. |
| DDRAW_CAPS2_CANDROPZ16BIT | Sixteen-bit RGBZ values can be converted into 16-bit RGB values. (The system does not support 8-bit conversions.) |
| DDRAW_CAPS2_FLIPINTERVAL | The driver responds to the Flip bit-field flag. |
| DDRAW_CAPS2_FLIPNOVSYNC | The driver responds to the FlipWithNoWait bit-field flag. |
| DDRAW_CAPS2_DYNAMICTEXTURES | The driver supports dynamic textures. |
CKeyCaps [out]A valid bitwise OR of the following color key capability bits that the driver supports.
| Capability bit | Meaning |
|---|---|
| DDRAW_CKEYCAPS_SRCBLT | Transparent bit-block transfers can be performed with a color key that identifies bits of the source surface that are copied to the destination surface. |
| DDRAW_CKEYCAPS_DESTBLT | Transparent bit-block transfers (bitblts) can be performed with a color key that identifies the replaceable bits of the destination surface. |
FxCaps [out]A valid bitwise OR of the following stretching and effects capability bits that the driver supports.
| Capability bit | Meaning |
|---|---|
| DDRAW_FXCAPS_BLTMIRRORLEFTRIGHT | Bit-block transfers (bitblts) that flip the contents of the source surface to the destination surface horizontally along the center axis can be performed. |
| DDRAW_FXCAPS_BLTMIRRORUPDOWN | Bit-block transfers (bitblts) that flip the contents of the source surface to the destination surface vertically along the center axis can be performed. |
MaxVideoPorts [out]The maximum number of video ports that the device supports.