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.