243 lines
9.3 KiB
Text
243 lines
9.3 KiB
Text
{-# LANGUAGE ForeignFunctionInterface, DeriveDataTypeable, GeneralizedNewtypeDeriving #-}
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module Bindings.GLX ( createColormap
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, createWindow
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, chooseFBConfig
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, getVisualFromFBConfig
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, VisualInfo(..)
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, SetWindowAttributes(..)
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, nullSetWindowAttributes
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, renderType
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, rgbaBit
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, drawableType
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, windowBit
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, xRenderable
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, doublebuffer
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, depthSize
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, stencilSize
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, createContext
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, makeCurrent
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, Context(..)
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) where
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import Data.Generics
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import Data.Int
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import Data.Word
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import Foreign.C.Types
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import Foreign.ForeignPtr
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import Foreign.Ptr
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import Foreign.Marshal.Alloc (alloca)
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import Foreign.Marshal.Array (peekArray, withArray0)
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import Foreign.Storable
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import Graphics.X11.Types (AttributeMask, Colormap, ColormapAlloc, Cursor, EventMask, Pixmap, Window, WindowClass, VisualID, XID)
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import Graphics.X11.Xlib.Extras (none, xFree)
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import Graphics.X11.Xlib.Types (Dimension, Display, Pixel, Position)
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#include <GL/glx.h>
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newtype FBConfig = FBConfig (Ptr FBConfig)
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deriving (Eq, Ord, Show, Typeable, Data, Storable)
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newtype Context = Context (Ptr Context)
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deriving (Eq, Ord, Show, Typeable, Data, Storable)
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newtype Visual = Visual (Ptr Visual)
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deriving (Eq, Ord, Show, Typeable, Data, Storable)
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data VisualInfo = VisualInfo
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{ viVisual :: !Visual
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, viVisualid :: !VisualID
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, viScreen :: !CInt
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, viDepth :: !CInt
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, viClass :: !CInt
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, viRedMask :: !CULong
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, viGreenMask :: !CULong
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, viBlueMask :: !CULong
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, viColormapSize :: !CInt
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, viBitsPerRgb :: !CInt
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} deriving (Eq, Ord, Show, Typeable)
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instance Storable VisualInfo where
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sizeOf _ = (#size XVisualInfo)
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alignment _ = alignment (undefined :: CULong)
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peek vi = do
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visual <- (#peek XVisualInfo, visual) vi
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visualid <- (#peek XVisualInfo, visualid) vi
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screen <- (#peek XVisualInfo, screen) vi
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depth <- (#peek XVisualInfo, depth) vi
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viclass <- (#peek XVisualInfo, class) vi
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red_mask <- (#peek XVisualInfo, red_mask) vi
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green_mask <- (#peek XVisualInfo, green_mask) vi
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blue_mask <- (#peek XVisualInfo, blue_mask) vi
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colormap_size <- (#peek XVisualInfo, colormap_size) vi
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bits_per_rgb <- (#peek XVisualInfo, bits_per_rgb) vi
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return (VisualInfo visual visualid screen depth viclass red_mask green_mask blue_mask colormap_size bits_per_rgb)
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poke vi (VisualInfo visual visualid screen depth viclass red_mask green_mask blue_mask colormap_size bits_per_rgb) = do
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(#poke XVisualInfo, visual) vi visual
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(#poke XVisualInfo, visualid) vi visualid
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(#poke XVisualInfo, screen) vi screen
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(#poke XVisualInfo, depth) vi depth
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(#poke XVisualInfo, class) vi viclass
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(#poke XVisualInfo, red_mask) vi red_mask
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(#poke XVisualInfo, green_mask) vi green_mask
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(#poke XVisualInfo, blue_mask) vi blue_mask
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(#poke XVisualInfo, colormap_size) vi colormap_size
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(#poke XVisualInfo, bits_per_rgb) vi bits_per_rgb
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data SetWindowAttributes = SetWindowAttributes
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{ swaBackgroundPixmap :: !Pixmap
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, swaBackgroundPixel :: !Pixel
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, swaBorderPixmap :: !Pixmap
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, swaBitGravity :: !CInt
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, swaWinGravity :: !CInt
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, swaBackingStore :: !CInt
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, swaBackingPlanes :: !CULong
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, swaBackingPixel :: !CULong
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, swaSaveUnder :: !Bool
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, swaEventMask :: !EventMask
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, swaDoNotPropagateMask :: !CULong
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, swaOverrideRedirect :: !Bool
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, swaColormap :: !Colormap
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, swaCursor :: !Cursor
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} deriving (Eq, Ord, Show, Typeable)
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instance Storable SetWindowAttributes where
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sizeOf _ = (#size XSetWindowAttributes)
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alignment _ = alignment (undefined :: CULong)
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peek swa = do
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background_pixmap <- (#peek XSetWindowAttributes, background_pixmap) swa
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background_pixel <- (#peek XSetWindowAttributes, background_pixel) swa
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border_pixmap <- (#peek XSetWindowAttributes, border_pixmap) swa
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bit_gravity <- (#peek XSetWindowAttributes, bit_gravity) swa
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win_gravity <- (#peek XSetWindowAttributes, win_gravity) swa
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backing_store <- (#peek XSetWindowAttributes, backing_store) swa
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backing_planes <- (#peek XSetWindowAttributes, backing_planes) swa
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backing_pixel <- (#peek XSetWindowAttributes, backing_pixel) swa
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save_under <- (#peek XSetWindowAttributes, save_under) swa
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event_mask <- (#peek XSetWindowAttributes, event_mask) swa
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do_not_propagate_mask <- (#peek XSetWindowAttributes, do_not_propagate_mask) swa
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override_redirect <- (#peek XSetWindowAttributes, override_redirect) swa
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colormap <- (#peek XSetWindowAttributes, colormap) swa
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cursor <- (#peek XSetWindowAttributes, cursor) swa
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return (SetWindowAttributes
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background_pixmap
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background_pixel
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border_pixmap
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bit_gravity
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win_gravity
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backing_store
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backing_planes
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backing_pixel
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save_under
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event_mask
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do_not_propagate_mask
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override_redirect
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colormap
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cursor)
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poke swa (SetWindowAttributes
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background_pixmap
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background_pixel
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border_pixmap
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bit_gravity
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win_gravity
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backing_store
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backing_planes
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backing_pixel
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save_under
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event_mask
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do_not_propagate_mask
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override_redirect
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colormap
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cursor) = do
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(#poke XSetWindowAttributes, background_pixmap) swa background_pixmap
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(#poke XSetWindowAttributes, background_pixel) swa background_pixel
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(#poke XSetWindowAttributes, border_pixmap) swa border_pixmap
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(#poke XSetWindowAttributes, bit_gravity) swa bit_gravity
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(#poke XSetWindowAttributes, win_gravity) swa win_gravity
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(#poke XSetWindowAttributes, backing_store) swa backing_store
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(#poke XSetWindowAttributes, backing_planes) swa backing_planes
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(#poke XSetWindowAttributes, backing_pixel) swa backing_pixel
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(#poke XSetWindowAttributes, save_under) swa save_under
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(#poke XSetWindowAttributes, event_mask) swa event_mask
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(#poke XSetWindowAttributes, do_not_propagate_mask) swa do_not_propagate_mask
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(#poke XSetWindowAttributes, override_redirect) swa override_redirect
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(#poke XSetWindowAttributes, colormap) swa colormap
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(#poke XSetWindowAttributes, cursor) swa cursor
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nullSetWindowAttributes :: SetWindowAttributes
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nullSetWindowAttributes = (SetWindowAttributes 0 0 0 0 0 0 0 0 False 0 0 False 0 0)
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foreign import ccall unsafe "GL/glx.h XCreateColormap"
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createColormap :: Display -> Window -> Visual -> ColormapAlloc -> IO Colormap
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foreign import ccall unsafe "GL/glx.h XCreateWindow"
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createWindow :: Display -> Window -> Position -> Position ->
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Dimension -> Dimension -> CInt -> CInt -> WindowClass ->
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Visual -> AttributeMask -> Ptr SetWindowAttributes -> IO Window
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foreign import ccall unsafe "GL/glx.h glXChooseFBConfig"
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glXChooseFBConfig :: Display -> CInt -> Ptr CInt -> Ptr CInt -> IO (Ptr FBConfig)
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chooseFBConfig :: Display -> CInt -> [(CInt, CInt)] -> IO [FBConfig]
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chooseFBConfig disp sc attr = alloca $ \n -> withArray0 (fromIntegral none) (concatMap (\(a,b) -> [a,b]) attr) $ \attrp -> do
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configs <- glXChooseFBConfig disp sc attrp n
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nelements <- peek n
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configlist <- peekArray (fromIntegral nelements) configs
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xFree configs
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return configlist
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renderType :: CInt
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renderType = (#const GLX_RENDER_TYPE)
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rgbaBit :: CInt
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rgbaBit = (#const GLX_RGBA_BIT)
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drawableType :: CInt
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drawableType = (#const GLX_DRAWABLE_TYPE)
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windowBit :: CInt
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windowBit = (#const GLX_WINDOW_BIT)
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xRenderable :: CInt
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xRenderable = (#const GLX_X_RENDERABLE)
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doublebuffer :: CInt
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doublebuffer = (#const GLX_DOUBLEBUFFER)
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depthSize :: CInt
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depthSize = (#const GLX_DEPTH_SIZE)
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stencilSize :: CInt
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stencilSize = (#const GLX_STENCIL_SIZE)
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foreign import ccall unsafe "GL/glx.h glXGetVisualFromFBConfig"
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glXGetVisualFromFBConfig :: Display -> FBConfig -> IO (Ptr VisualInfo)
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getVisualFromFBConfig :: Display -> FBConfig -> IO (VisualInfo)
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getVisualFromFBConfig disp config = do
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viptr <- glXGetVisualFromFBConfig disp config
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vi <- peek viptr
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xFree viptr
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return vi
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foreign import ccall unsafe "GL/glx.h glXCreateContext"
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createContext :: Display -> Ptr VisualInfo -> Context -> Bool -> IO Context
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foreign import ccall unsafe "GL/glx.h glXMakeCurrent"
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makeCurrent :: Display -> XID -> Context -> IO Bool
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