====== Graphics Folio Calls ======


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This chapter lists the Graphics folio call calls in alphabetical order. The list below is a quick summary of each, followed by the page number where you'll find the call described.

  * ''%%AddScreenGroup %%''Adds a screen group to the display.
  * ''%%CloneVRAMPages %%''Copies one page of VRAM to other contiguous pages of VRAM.
  * ''%%CloneVRAMPagesDefer %%''Copies one page of VRAM to a contiguous range of VRAM pages asynchronously.
  * ''%%CloseGraphicsFolio%%'' Closes the Graphics folio.
  * ''%%CopyVRAMPages %%''Copies a contiguous number of VRAM pages to a VRAM destination.
  * ''%%CopyVRAMPagesDefer %%''Copies a contiguous number of VRAM pages to a VRAM destination asynchronously.
  * ''%%CreateBitmap %%''Creates a bitmap.
  * ''%%CreateScreenGroup %%''Creates a screen group and all its screens, bitmaps, buffers, and VDLs.
  * ''%%CreateVBLIOReq %%''Returns an I/O request for use with WaitVBL() and WaitVBLDefer().''%%%%''
  * ''%%CreateVRAMIOReq %%''Returns an I/O request for use with SPORT transfer calls.
  * ''%%DeleteBitmap%%'' Deletes a bitmap item.
  * ''%%DeleteScreenGroup %%''Deletes a screen group and its associated data structures.
  * ''%%DeleteVBLIOReq %%''Delete an I/O request created by CreateVBLIOReq().''%%%%''
  * ''%%DeleteVDL %%''Deletes a VDL and all its associated data structures.
  * ''%%DeleteVRAMIOReq %%''Delete an I/O request created by CreateVRAMIOReq().''%%%%''
  * ''%%DisableHAVG %%''Disables horizontal averaging.
  * ''%%DisplayOverlay%%'' Displays a bitmap overlaying all screens.
  * ''%%DisplayScreen %%''Displays the bitmap(s) of the specified screen (or screens).
  * ''%%DisableVAVG %%''Disables vertical averaging.
  * ''%%DrawCels %%''Draws a list of cels (one or more) to the buffer of a bitmap.
  * ''%%DrawChar %%''Draws a text character to the display window.
  * ''%%DrawScreenCels %%''Draws a list of cels (one or more) to the bitmaps of a screen.
  * ''%%DrawText16%%'' Draws a text character to the display window.
  * ''%%DrawText8 %%''Draws a text character to the display window.
  * ''%%DrawTo %%''Draws a line from the GrafCon current position to a specified position.
  * ''%%EnableHAVG %%''Enables horizontal averaging.
  * ''%%EnableVAVG %%''Enables vertical averaging.
  * ''%%FastMapCel %%''Maps this cel onto any four corners.
  * ''%%FastMapCelf16 %%''Maps this cel onto any four corners.
  * ''%%FastMapCelInit %%''Initializes a CCB for FastMapCel use.
  * ''%%FillRect %%''Draws a filled rectangle.
  * ''%%GetCurrentFont %%''Returns the pointer to the 3DO system default font.
  * ''%%GetFirstDisplayInfo%%'' Retrieves information about display modes supported by the system.
  * ''%%GetPixelAddress %%''Returns a pointer to the pixel at the specified coordinates.
  * ''%%GetVBLIOReq %%''Returns an I/O request for use with timer calls.
  * ''%%GetVRAMIOReq %%''Returns an I/O request for use with SPORT transfer calls.
  * ''%%MakeCCBRelative %%''Creates a CCB relative address.
  * ''%%MakeCLUTBackgroundEntry %%''Constructs a color entry to set the background color of the display.
  * ''%%MakeCLUTBlueEntry %%''Packs a color index and blue values into a single word.
  * ''%%MakeCLUTColorEntry %%''Packs a color index and red, green, and blue values into a single word.
  * ''%%MakeCLUTGreenEntry %%''Packs a color index and green values into a single word.
  * ''%%MakeCLUTRedEntry %%''Packs a color index and red values into a single word.
  * ''%%MakeRGB15 %%''Creates a 3DO RGB value out of separate red, green, and blue values.
  * ''%%MakeRGB15Pair %%''Creates a double 3DO RGB value out of separate red, green, and blue values.
  * ''%%MapCel %%''Maps this cel onto any four corners.
  * ''%%ModifyVDL%%'' Changes one or more attributes of a VDL.
  * ''%%MoveTo %%''Moves the pen position of a GrafCon to a new location.
  * ''%%OpenGraphicsFolio %%''Opens the Graphics folio for use by the calling task.
  * ''%%QueryGraphics %%''Gets graphics environment information.
  * ''%%QueryGraphicsList %%''Returns graphics environment information.
  * ''%%ReadPixel %%''Reads a pixel from the display currently associated with a GrafCon.
  * ''%%RemoveScreenGroup %%''Removes a screen group from the display.
  * ''%%ResetCurrentFont %%''Resets the system's default font.
  * ''%%ResetReadAddress %%''Resets a bitmap's read address.
  * ''%%ResetScreenColors %%''Resets the colors of a screen to a linear palette.
  * ''%%SetBGPen %%''Sets the background pen of a GrafCon.
  * ''%%SetCEControl %%''Sets the cel engine control word.
  * ''%%SetCEWatchDog %%''Sets the length of time in which the cel engine can do one draw.
  * ''%%SetClipHeight %%''Sets the clip height of a bitmap.
  * ''%%SetClipOrigin %%''Sets the clip origin of a bitmap.
  * ''%%SetClipWidth %%''Sets the clip width of a bitmap.
  * ''%%SetCurrentFontCCB %%''Sets the font's CCB.
  * ''%%SetFGPen %%''Sets the foreground pen of a GrafCon.
  * ''%%SetReadAddress %%''Sets a bitmap's read address.
  * ''%%SetScreenColor %%''Sets a color in the 3DO system's palette.
  * ''%%SetScreenColors %%''Sets a number of colors in the 3DO system's palette.
  * ''%%SetVDL %%''Sets a screen to display a specific VDL.
  * ''%%SetVRAMPages %%''Sets contiguous pages of VRAM to a specified value.
  * ''%%SetVRAMPagesDefer%%'' Sets contiguous pages of VRAM to a specified value.
  * ''%%SubmitVDL %%''Submits a VDL for approval by the system.
  * ''%%WaitVBL %%''Waits the specified number of VBLs.
  * ''%%WaitVBLDefer %%''Waits the specified number of VBLs.
  * ''%%WritePixel %%''Writes a pixel to a bitmap in a GrafCon's foreground color.