1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
|
{-# 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.ForeignPtr
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 ()
|
