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