VSYNC
               queries the status of the graphics video clock.  See the
               pfInitVClock reference page for more information.

VSYNC_SET
               queries the write-ability of the graphics video clock.  See the
               pfInitVClock reference page for more information.
GANGDRAW
               queries the availability of "gang" swapbuffers where multiple
               graphics pipelines may be forced to swap framebuffers
               simultaneously.  See the pfChannel::setShare reference page for
               more information.

HYPERPIPE
               queries the support for hyperpipe hardware. See the pfHyperpipe
               reference page for more information.

STEREO_IN_WINDOW
               queries the support for doing stereo with multiple buffers in a
               single window.  See the IRIS GL stereobuffer(3g) and OpenGL
               glDrawBufferMode(3g) reference pages for more information.

PBUFFER
               queries the support for OpenGL pbuffer drawables for off-screen
               rendering.  See the OpenGL/X glXCreateGLXPbufferSGIX(3g)
               reference page for more information on pbuffers.

MULTISAMPLE
               queries the support and relative performance of multisampled
               antialiasing.  See the pfAntialias reference page for more
               information.

MULTISAMPLE_TRANSP
               queries the support and relative performance of multisampled
               transparency.  See the pfTransparency reference page for more
               information.

MULTISAMPLE_ROUND_POINTS
               queries the support and relative performance of round
               multisampled light points.

MULTISAMPLE_STENCIL
               queries the support and relative performance of multisampled
               stencil.

COLOR_ABGR
               queries the support and relative performance of image data in
               the IRIS GL style ABGR format.  This format may be slow or
               unsupported in some OpenGL implementations.  This is relevant
               to the OpenGL glDrawPixels(3g) command.

DISPLACE_POLYGON
               queries the support for polygon displacement in screen Z used
               for doing decals.  See the pfDecal reference page for more
               information.

POLYMODE
               queries the support for polygon fill modes.  See the IRIS GL
               polymode(3g) and OpenGL glPolygonMode(3g) reference pages for
               more information.

TRANSPARENCY
               queries the support for and relative performance of
               transparency.

FOG_SPLINE
               queries the support for spline fog.  See the pfFog reference
               page for more information.

FOG_LAYERED
               queries the support for layered fog using special OpenGL
               extensions.

ALPHA_FUNC
               queries the support for alpha functions.  See the pfAlphaFunc
               reference page and the IRIS GL blendfunction(3g) and OpenGL
               glBlendFunc(3g) reference pages for more information.

ALPHA_FUNC_COMPARE_REF
               queries the support for comparative alpha functions.  Some
               graphics platforms under IRIS GL do not support the comparison
               alpha functions.  See the pfAlphaFunc reference page for more
               information.

BLENDCOLOR
               queries the support for specification of a blend color to use
               with alpha functions.  Refer to the IRIS GL blendcolor(3g) and
               the OpenGL extension glBlendColor(3g) for more information.

BLEND_FUNC_SUBTRACT
               queries the support for additional differencing alpha blending
               functions.

BLEND_FUNC_MINMAX
               queries the support for additional min/max alpha blending
               functions.

GLSPRITE
               queries the existence of GL support for sprites (billboards).
               This can mean faster billboard drawing and also allows for
               correct rendering of billboards in GL display lists.  See the
               pfSprite and pfBillboard reference pages for more information.

DVR
               queries the support for dynamic video resizing, useful for load
               management of fill limited applications.  See the
               pfPipeVideoChannel reference page for more information.

TEXTURE
               queries the support and relative performance of texture
               mapping.

TEXTURE_16BIT_IFMTS
               queries the support and relative performance of 16-bit texel
               formats.  These formats take up less texture memory and can
               provide a significant performance improvement at the cost of
               some loss of image quality.  See the pfTexFormat reference page
               for more information. (Note this refers to support for intensity
               only textures - NOT 16 bit RGBA).

TEXTURE_SUBTEXTURE
               queries the support for dynamic loading of parts or all of
               textures after the texture has been defined.

TEXTURE_TRILINEAR
               queries the support for trilinear MIPmapping for minification
               filtering of texture maps.

TEXTURE_DETAIL
               queries the support for detailing of magnified texture maps.
               See the pfTexFilter and pfTexDetail reference pages for more
               information.

TEXTURE_SHARPEN
               queries the support for sharpening of magnified texture maps.
               See the pfTexFilter reference page for more information.

TEXTURE_3D
               queries the support for three-dimensional textures.

TEXTURE_5551
               queries whether graphics hardware supports the 5551 texture
               format (PFTEX_UNSIGNED_SHORT_5_5_5_1). (Your graphics platform
               needs support for the OpenGL EXT_packed_pixels for this to work
               and RealityEngine doesnt have this support - damn!)

TEXTURE_PROJECTIVE
               queries the support for projected textures (lights). Projected
               shadows needs also the TEXTURE_SHADOW feature.

TEXTURE_MINFILTER_BILINEAR_CMP
               queries the support for special bilinear LEQUAL/GEQUAL
               minification filters for doing real-time shadows.

TEXTURE_SHADOW
                   queries the support for shadows texture extension.

TEXTURE_CLIPMAP
               queries the support of clipmapping, or virtual MIPmapping, for
               the minification filtering of very large textures.

TEXTURE_LOD_RANGE
               queries the support of texture LOD range control for selecting
               which texture levels are to be used. (This is the
               EXT_Texture_LOD OpenGL feature which is supported on Impact and
               later platforms but not on RealityEngine - which is a shame as
               it can greatly reduce the texture paging load!).

TEXTURE_LOD_BIAS
               queries the support of texture LOD bias control.

READ_MSDEPTH_BUFFER
               queries the support for reading the multisample depth buffer.

COPY_MSDEPTH_BUFFER
               queries the support for copying to/from the multisample depth
               buffer.

READ_TEXTURE_MEMORY
               queries the support for reading texture memory.

COPY_TEXTURE_MEMORY
               queries the support for copying to/from texture memory.

MTL_CMODE
               queries the support and speed of material color mode. On most
               graphics platforms, this mode yields significant performance
               improvements for management of multiple materials.  However, on
               some older low-end platforms, it can have additional cost and
               should not be used if multiple materials are not in used.

LMODEL_ATTENUATION
               queries the support for light attenuation on the light model.
               This is IRIS GL style light attenuation.  See the IRIS GL
               lmdef(3g) reference page for more information.

LIGHT_ATTENUATION
               queries the support for light attenuation on the light.  This
               is OpenGL style light attenuation.  See the OpenGL
               glLightModel(3g) reference page for more information.

LIGHT_CLR_SPECULAR
               queries the support for specular color components on lights.
               This is only supported in OpenGL.  See the OpenGL glLight(3g)
               reference page for more information.

CALLIGRAPHIC
               queries the support for calligraphic support.  This is to know
               if the Graphic Pipe Z buffer can be used for calligraphics
               light points, but it doesn't tell you if a board is connected
               to the system.

DECAL_PLANE
               queries the support for decal reference planes for use with
               pfLayers and pfDecal geometry.

PIPE_STATS
               queries the hardware support for graphics pipeline statistics.
               The InfiniteReality graphics subsystem supports time stamps in
               the graphics pipeline.