1 /* Window-specific OpenGL functions implementation.
3 * Copyright (c) 1999 Lionel Ulmer
4 * Copyright (c) 2005 Raphael Junqueira
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 #include "wine/port.h"
36 #include "opengl_ext.h"
42 #include "wine/gdi_driver.h"
43 #include "wine/library.h"
44 #include "wine/debug.h"
46 WINE_DEFAULT_DEBUG_CHANNEL(wgl
);
47 WINE_DECLARE_DEBUG_CHANNEL(opengl
);
51 /* internal WGL functions */
52 void (WINAPI
*p_wglFinish
)(void);
53 void (WINAPI
*p_wglFlush
)(void);
54 void (WINAPI
*p_wglGetIntegerv
)(GLenum pname
, GLint
* params
);
58 #define MAKE_FUNCPTR(f) static typeof(f) * p##f;
59 MAKE_FUNCPTR(gluNewTess
)
60 MAKE_FUNCPTR(gluDeleteTess
)
61 MAKE_FUNCPTR(gluTessBeginContour
)
62 MAKE_FUNCPTR(gluTessBeginPolygon
)
63 MAKE_FUNCPTR(gluTessCallback
)
64 MAKE_FUNCPTR(gluTessEndContour
)
65 MAKE_FUNCPTR(gluTessEndPolygon
)
66 MAKE_FUNCPTR(gluTessVertex
)
68 #endif /* SONAME_LIBGLU */
70 static HMODULE opengl32_handle
;
71 static void* libglu_handle
= NULL
;
73 const GLubyte
* WINAPI
wine_glGetString( GLenum name
);
75 /* internal GDI functions */
76 extern INT WINAPI
GdiDescribePixelFormat( HDC hdc
, INT fmt
, UINT size
, PIXELFORMATDESCRIPTOR
*pfd
);
77 extern BOOL WINAPI
GdiSetPixelFormat( HDC hdc
, INT fmt
, const PIXELFORMATDESCRIPTOR
*pfd
);
78 extern BOOL WINAPI
GdiSwapBuffers( HDC hdc
);
80 /* handle management */
82 #define MAX_WGL_HANDLES 1024
88 struct wgl_context
* context
;
89 const struct wgl_funcs
*funcs
;
92 static struct wgl_handle wgl_handles
[MAX_WGL_HANDLES
];
93 static struct wgl_handle
*next_free
;
94 static unsigned int handle_count
;
96 static CRITICAL_SECTION wgl_section
;
97 static CRITICAL_SECTION_DEBUG critsect_debug
=
100 { &critsect_debug
.ProcessLocksList
, &critsect_debug
.ProcessLocksList
},
101 0, 0, { (DWORD_PTR
)(__FILE__
": wgl_section") }
103 static CRITICAL_SECTION wgl_section
= { &critsect_debug
, -1, 0, 0, 0, 0 };
105 static inline const struct wgl_funcs
*get_dc_funcs( HDC hdc
)
107 return __wine_get_wgl_driver( hdc
, WINE_GDI_DRIVER_VERSION
);
110 static inline HGLRC
next_handle( struct wgl_handle
*ptr
)
112 WORD generation
= HIWORD( ptr
->handle
) + 1;
113 if (!generation
) generation
++;
114 ptr
->handle
= MAKELONG( ptr
- wgl_handles
, generation
);
115 return ULongToHandle( ptr
->handle
);
118 /* the current handle is assumed valid and doesn't need locking */
119 static inline struct wgl_handle
*get_current_handle_ptr(void)
121 if (!NtCurrentTeb()->glCurrentRC
) return NULL
;
122 return &wgl_handles
[LOWORD(NtCurrentTeb()->glCurrentRC
)];
125 static struct wgl_handle
*get_handle_ptr( HGLRC handle
)
127 unsigned int index
= LOWORD( handle
);
129 EnterCriticalSection( &wgl_section
);
130 if (index
< handle_count
&& ULongToHandle(wgl_handles
[index
].handle
) == handle
)
131 return &wgl_handles
[index
];
133 LeaveCriticalSection( &wgl_section
);
134 SetLastError( ERROR_INVALID_HANDLE
);
138 static void release_handle_ptr( struct wgl_handle
*ptr
)
140 if (ptr
) LeaveCriticalSection( &wgl_section
);
143 static HGLRC
alloc_handle( struct wgl_context
*context
, const struct wgl_funcs
*funcs
)
146 struct wgl_handle
*ptr
= NULL
;
148 EnterCriticalSection( &wgl_section
);
149 if ((ptr
= next_free
))
150 next_free
= (struct wgl_handle
*)next_free
->context
;
151 else if (handle_count
< MAX_WGL_HANDLES
)
152 ptr
= &wgl_handles
[handle_count
++];
156 ptr
->context
= context
;
158 handle
= next_handle( ptr
);
160 else SetLastError( ERROR_NOT_ENOUGH_MEMORY
);
161 LeaveCriticalSection( &wgl_section
);
165 static void free_handle_ptr( struct wgl_handle
*ptr
)
167 ptr
->handle
&= ~0xffff;
168 ptr
->context
= (struct wgl_context
*)next_free
;
171 LeaveCriticalSection( &wgl_section
);
174 /***********************************************************************
175 * wglSetPixelFormat(OPENGL32.@)
177 BOOL WINAPI
wglSetPixelFormat( HDC hdc
, INT iPixelFormat
,
178 const PIXELFORMATDESCRIPTOR
*ppfd
)
180 return GdiSetPixelFormat(hdc
, iPixelFormat
, ppfd
);
183 /***********************************************************************
184 * wglCopyContext (OPENGL32.@)
186 BOOL WINAPI
wglCopyContext(HGLRC hglrcSrc
, HGLRC hglrcDst
, UINT mask
)
188 struct wgl_handle
*src
, *dst
;
191 if (!(src
= get_handle_ptr( hglrcSrc
))) return FALSE
;
192 if ((dst
= get_handle_ptr( hglrcDst
)))
194 if (src
->funcs
!= dst
->funcs
) SetLastError( ERROR_INVALID_HANDLE
);
195 else ret
= src
->funcs
->p_wglCopyContext( src
->context
, dst
->context
, mask
);
197 release_handle_ptr( dst
);
198 release_handle_ptr( src
);
202 /***********************************************************************
203 * wglDeleteContext (OPENGL32.@)
205 BOOL WINAPI
wglDeleteContext(HGLRC hglrc
)
207 struct wgl_handle
*ptr
= get_handle_ptr( hglrc
);
209 if (!ptr
) return FALSE
;
211 if (ptr
->tid
&& ptr
->tid
!= GetCurrentThreadId())
213 SetLastError( ERROR_BUSY
);
214 release_handle_ptr( ptr
);
217 if (hglrc
== NtCurrentTeb()->glCurrentRC
) wglMakeCurrent( 0, 0 );
218 ptr
->funcs
->p_wglDeleteContext( ptr
->context
);
219 free_handle_ptr( ptr
);
223 /***********************************************************************
224 * wglMakeCurrent (OPENGL32.@)
226 BOOL WINAPI
wglMakeCurrent(HDC hdc
, HGLRC hglrc
)
229 struct wgl_handle
*ptr
, *prev
= get_current_handle_ptr();
233 if (!(ptr
= get_handle_ptr( hglrc
))) return FALSE
;
234 if (!ptr
->tid
|| ptr
->tid
== GetCurrentThreadId())
236 ret
= ptr
->funcs
->p_wglMakeCurrent( hdc
, ptr
->context
);
239 if (prev
) prev
->tid
= 0;
240 ptr
->tid
= GetCurrentThreadId();
241 NtCurrentTeb()->glCurrentRC
= hglrc
;
246 SetLastError( ERROR_BUSY
);
249 release_handle_ptr( ptr
);
253 if (!prev
->funcs
->p_wglMakeCurrent( 0, NULL
)) return FALSE
;
255 NtCurrentTeb()->glCurrentRC
= 0;
259 SetLastError( ERROR_INVALID_HANDLE
);
265 /***********************************************************************
266 * wglCreateContextAttribsARB (wrapper for the extension function returned by the driver)
268 static HGLRC WINAPI
wglCreateContextAttribsARB( HDC hdc
, HGLRC share
, const int *attribs
)
271 struct wgl_context
*context
;
272 struct wgl_handle
*share_ptr
= NULL
;
273 const struct wgl_funcs
*funcs
= get_dc_funcs( hdc
);
275 if (!funcs
) return 0;
276 if (share
&& !(share_ptr
= get_handle_ptr( share
))) return 0;
277 if ((context
= funcs
->p_wglCreateContextAttribsARB( hdc
, share_ptr
? share_ptr
->context
: NULL
,
280 ret
= alloc_handle( context
, funcs
);
281 if (!ret
) funcs
->p_wglDeleteContext( context
);
283 release_handle_ptr( share_ptr
);
288 /***********************************************************************
289 * wglMakeContextCurrentARB (wrapper for the extension function returned by the driver)
291 static BOOL WINAPI
wglMakeContextCurrentARB( HDC draw_hdc
, HDC read_hdc
, HGLRC hglrc
)
294 struct wgl_handle
*ptr
, *prev
= get_current_handle_ptr();
298 if (!(ptr
= get_handle_ptr( hglrc
))) return FALSE
;
299 if (!ptr
->tid
|| ptr
->tid
== GetCurrentThreadId())
301 ret
= ptr
->funcs
->p_wglMakeContextCurrentARB( draw_hdc
, read_hdc
, ptr
->context
);
304 if (prev
) prev
->tid
= 0;
305 ptr
->tid
= GetCurrentThreadId();
306 NtCurrentTeb()->glCurrentRC
= hglrc
;
311 SetLastError( ERROR_BUSY
);
314 release_handle_ptr( ptr
);
318 if (!prev
->funcs
->p_wglMakeCurrent( 0, NULL
)) return FALSE
;
320 NtCurrentTeb()->glCurrentRC
= 0;
325 /***********************************************************************
326 * wglShareLists (OPENGL32.@)
328 BOOL WINAPI
wglShareLists(HGLRC hglrcSrc
, HGLRC hglrcDst
)
331 struct wgl_handle
*src
, *dst
;
333 if (!(src
= get_handle_ptr( hglrcSrc
))) return FALSE
;
334 if ((dst
= get_handle_ptr( hglrcDst
)))
336 if (src
->funcs
!= dst
->funcs
) SetLastError( ERROR_INVALID_HANDLE
);
337 else ret
= src
->funcs
->p_wglShareLists( src
->context
, dst
->context
);
339 release_handle_ptr( dst
);
340 release_handle_ptr( src
);
344 /***********************************************************************
345 * wglGetCurrentDC (OPENGL32.@)
347 HDC WINAPI
wglGetCurrentDC(void)
349 struct wgl_handle
*context
= get_current_handle_ptr();
350 if (!context
) return 0;
351 return context
->funcs
->p_wglGetCurrentDC( context
->context
);
354 /***********************************************************************
355 * wglCreateContext (OPENGL32.@)
357 HGLRC WINAPI
wglCreateContext(HDC hdc
)
360 struct wgl_context
*context
;
361 const struct wgl_funcs
*funcs
= get_dc_funcs( hdc
);
363 if (!funcs
) return 0;
364 if (!(context
= funcs
->p_wglCreateContext( hdc
))) return 0;
365 ret
= alloc_handle( context
, funcs
);
366 if (!ret
) funcs
->p_wglDeleteContext( context
);
370 /***********************************************************************
371 * wglGetCurrentContext (OPENGL32.@)
373 HGLRC WINAPI
wglGetCurrentContext(void)
375 return NtCurrentTeb()->glCurrentRC
;
378 /***********************************************************************
379 * wglChoosePixelFormat (OPENGL32.@)
381 INT WINAPI
wglChoosePixelFormat(HDC hdc
, const PIXELFORMATDESCRIPTOR
* ppfd
)
383 PIXELFORMATDESCRIPTOR format
, best
;
384 int i
, count
, best_format
;
385 int bestDBuffer
= -1, bestStereo
= -1;
387 TRACE_(wgl
)( "%p %p: size %u version %u flags %u type %u color %u %u,%u,%u,%u "
388 "accum %u depth %u stencil %u aux %u\n",
389 hdc
, ppfd
, ppfd
->nSize
, ppfd
->nVersion
, ppfd
->dwFlags
, ppfd
->iPixelType
,
390 ppfd
->cColorBits
, ppfd
->cRedBits
, ppfd
->cGreenBits
, ppfd
->cBlueBits
, ppfd
->cAlphaBits
,
391 ppfd
->cAccumBits
, ppfd
->cDepthBits
, ppfd
->cStencilBits
, ppfd
->cAuxBuffers
);
393 count
= GdiDescribePixelFormat( hdc
, 0, 0, NULL
);
394 if (!count
) return 0;
398 best
.cAlphaBits
= -1;
399 best
.cColorBits
= -1;
400 best
.cDepthBits
= -1;
401 best
.cStencilBits
= -1;
402 best
.cAuxBuffers
= -1;
404 for (i
= 1; i
<= count
; i
++)
406 if (!GdiDescribePixelFormat( hdc
, i
, sizeof(format
), &format
)) continue;
408 if (ppfd
->iPixelType
!= format
.iPixelType
)
410 TRACE( "pixel type mismatch for iPixelFormat=%d\n", i
);
414 /* only use bitmap capable for formats for bitmap rendering */
415 if( (ppfd
->dwFlags
& PFD_DRAW_TO_BITMAP
) != (format
.dwFlags
& PFD_DRAW_TO_BITMAP
))
417 TRACE( "PFD_DRAW_TO_BITMAP mismatch for iPixelFormat=%d\n", i
);
421 /* The behavior of PDF_STEREO/PFD_STEREO_DONTCARE and PFD_DOUBLEBUFFER / PFD_DOUBLEBUFFER_DONTCARE
422 * is not very clear on MSDN. They specify that ChoosePixelFormat tries to match pixel formats
423 * with the flag (PFD_STEREO / PFD_DOUBLEBUFFERING) set. Otherwise it says that it tries to match
424 * formats without the given flag set.
425 * A test on Windows using a Radeon 9500pro on WinXP (the driver doesn't support Stereo)
426 * has indicated that a format without stereo is returned when stereo is unavailable.
427 * So in case PFD_STEREO is set, formats that support it should have priority above formats
428 * without. In case PFD_STEREO_DONTCARE is set, stereo is ignored.
430 * To summarize the following is most likely the correct behavior:
431 * stereo not set -> prefer non-stereo formats, but also accept stereo formats
432 * stereo set -> prefer stereo formats, but also accept non-stereo formats
433 * stereo don't care -> it doesn't matter whether we get stereo or not
435 * In Wine we will treat non-stereo the same way as don't care because it makes
436 * format selection even more complicated and second drivers with Stereo advertise
437 * each format twice anyway.
440 /* Doublebuffer, see the comments above */
441 if (!(ppfd
->dwFlags
& PFD_DOUBLEBUFFER_DONTCARE
))
443 if (((ppfd
->dwFlags
& PFD_DOUBLEBUFFER
) != bestDBuffer
) &&
444 ((format
.dwFlags
& PFD_DOUBLEBUFFER
) == (ppfd
->dwFlags
& PFD_DOUBLEBUFFER
)))
447 if (bestDBuffer
!= -1 && (format
.dwFlags
& PFD_DOUBLEBUFFER
) != bestDBuffer
) continue;
450 /* Stereo, see the comments above. */
451 if (!(ppfd
->dwFlags
& PFD_STEREO_DONTCARE
))
453 if (((ppfd
->dwFlags
& PFD_STEREO
) != bestStereo
) &&
454 ((format
.dwFlags
& PFD_STEREO
) == (ppfd
->dwFlags
& PFD_STEREO
)))
457 if (bestStereo
!= -1 && (format
.dwFlags
& PFD_STEREO
) != bestStereo
) continue;
460 /* Below we will do a number of checks to select the 'best' pixelformat.
461 * We assume the precedence cColorBits > cAlphaBits > cDepthBits > cStencilBits -> cAuxBuffers.
462 * The code works by trying to match the most important options as close as possible.
463 * When a reasonable format is found, we will try to match more options.
464 * It appears (see the opengl32 test) that Windows opengl drivers ignore options
465 * like cColorBits, cAlphaBits and friends if they are set to 0, so they are considered
466 * as DONTCARE. At least Serious Sam TSE relies on this behavior. */
468 if (ppfd
->cColorBits
)
470 if (((ppfd
->cColorBits
> best
.cColorBits
) && (format
.cColorBits
> best
.cColorBits
)) ||
471 ((format
.cColorBits
>= ppfd
->cColorBits
) && (format
.cColorBits
< best
.cColorBits
)))
474 if (best
.cColorBits
!= format
.cColorBits
) /* Do further checks if the format is compatible */
476 TRACE( "color mismatch for iPixelFormat=%d\n", i
);
480 if (ppfd
->cAlphaBits
)
482 if (((ppfd
->cAlphaBits
> best
.cAlphaBits
) && (format
.cAlphaBits
> best
.cAlphaBits
)) ||
483 ((format
.cAlphaBits
>= ppfd
->cAlphaBits
) && (format
.cAlphaBits
< best
.cAlphaBits
)))
486 if (best
.cAlphaBits
!= format
.cAlphaBits
)
488 TRACE( "alpha mismatch for iPixelFormat=%d\n", i
);
492 if (ppfd
->cDepthBits
)
494 if (((ppfd
->cDepthBits
> best
.cDepthBits
) && (format
.cDepthBits
> best
.cDepthBits
)) ||
495 ((format
.cDepthBits
>= ppfd
->cDepthBits
) && (format
.cDepthBits
< best
.cDepthBits
)))
498 if (best
.cDepthBits
!= format
.cDepthBits
)
500 TRACE( "depth mismatch for iPixelFormat=%d\n", i
);
504 if (ppfd
->cStencilBits
)
506 if (((ppfd
->cStencilBits
> best
.cStencilBits
) && (format
.cStencilBits
> best
.cStencilBits
)) ||
507 ((format
.cStencilBits
>= ppfd
->cStencilBits
) && (format
.cStencilBits
< best
.cStencilBits
)))
510 if (best
.cStencilBits
!= format
.cStencilBits
)
512 TRACE( "stencil mismatch for iPixelFormat=%d\n", i
);
516 if (ppfd
->cAuxBuffers
)
518 if (((ppfd
->cAuxBuffers
> best
.cAuxBuffers
) && (format
.cAuxBuffers
> best
.cAuxBuffers
)) ||
519 ((format
.cAuxBuffers
>= ppfd
->cAuxBuffers
) && (format
.cAuxBuffers
< best
.cAuxBuffers
)))
522 if (best
.cAuxBuffers
!= format
.cAuxBuffers
)
524 TRACE( "aux mismatch for iPixelFormat=%d\n", i
);
533 bestDBuffer
= format
.dwFlags
& PFD_DOUBLEBUFFER
;
534 bestStereo
= format
.dwFlags
& PFD_STEREO
;
537 TRACE( "returning %u\n", best_format
);
541 /***********************************************************************
542 * wglDescribePixelFormat (OPENGL32.@)
544 INT WINAPI
wglDescribePixelFormat(HDC hdc
, INT iPixelFormat
, UINT nBytes
,
545 LPPIXELFORMATDESCRIPTOR ppfd
)
547 return GdiDescribePixelFormat(hdc
, iPixelFormat
, nBytes
, ppfd
);
550 /***********************************************************************
551 * wglGetPixelFormat (OPENGL32.@)
553 INT WINAPI
wglGetPixelFormat(HDC hdc
)
555 const struct wgl_funcs
*funcs
= get_dc_funcs( hdc
);
556 if (!funcs
) return 0;
557 return funcs
->p_GetPixelFormat( hdc
);
560 /***********************************************************************
561 * wglCreateLayerContext (OPENGL32.@)
563 HGLRC WINAPI
wglCreateLayerContext(HDC hdc
,
565 TRACE("(%p,%d)\n", hdc
, iLayerPlane
);
567 if (iLayerPlane
== 0) {
568 return wglCreateContext(hdc
);
570 FIXME("no handler for layer %d\n", iLayerPlane
);
575 /***********************************************************************
576 * wglDescribeLayerPlane (OPENGL32.@)
578 BOOL WINAPI
wglDescribeLayerPlane(HDC hdc
,
582 LPLAYERPLANEDESCRIPTOR plpd
) {
583 FIXME("(%p,%d,%d,%d,%p)\n", hdc
, iPixelFormat
, iLayerPlane
, nBytes
, plpd
);
588 /***********************************************************************
589 * wglGetLayerPaletteEntries (OPENGL32.@)
591 int WINAPI
wglGetLayerPaletteEntries(HDC hdc
,
595 const COLORREF
*pcr
) {
596 FIXME("(): stub!\n");
601 /* check if the extension is present in the list */
602 static BOOL
has_extension( const char *list
, const char *ext
)
604 size_t len
= strlen( ext
);
608 while (*list
== ' ') list
++;
609 if (!strncmp( list
, ext
, len
) && (!list
[len
] || list
[len
] == ' ')) return TRUE
;
610 list
= strchr( list
, ' ' );
615 static int compar(const void *elt_a
, const void *elt_b
) {
616 return strcmp(((const OpenGL_extension
*) elt_a
)->name
,
617 ((const OpenGL_extension
*) elt_b
)->name
);
620 /* Check if a GL extension is supported */
621 static BOOL
is_extension_supported(const char* extension
)
623 const char *gl_ext_string
= (const char*)wine_glGetString(GL_EXTENSIONS
);
625 TRACE("Checking for extension '%s'\n", extension
);
628 ERR("No OpenGL extensions found, check if your OpenGL setup is correct!\n");
632 /* We use the GetProcAddress function from the display driver to retrieve function pointers
633 * for OpenGL and WGL extensions. In case of winex11.drv the OpenGL extension lookup is done
634 * using glXGetProcAddress. This function is quite unreliable in the sense that its specs don't
635 * require the function to return NULL when an extension isn't found. For this reason we check
636 * if the OpenGL extension required for the function we are looking up is supported. */
638 /* Check if the extension is part of the GL extension string to see if it is supported. */
639 if (has_extension(gl_ext_string
, extension
))
642 /* In general an OpenGL function starts as an ARB/EXT extension and at some stage
643 * it becomes part of the core OpenGL library and can be reached without the ARB/EXT
644 * suffix as well. In the extension table, these functions contain GL_VERSION_major_minor.
645 * Check if we are searching for a core GL function */
646 if(strncmp(extension
, "GL_VERSION_", 11) == 0)
648 const GLubyte
*gl_version
= glGetString(GL_VERSION
);
649 const char *version
= extension
+ 11; /* Move past 'GL_VERSION_' */
652 ERR("No OpenGL version found!\n");
656 /* Compare the major/minor version numbers of the native OpenGL library and what is required by the function.
657 * The gl_version string is guaranteed to have at least a major/minor and sometimes it has a release number as well. */
658 if( (gl_version
[0] >= version
[0]) || ((gl_version
[0] == version
[0]) && (gl_version
[2] >= version
[2])) ) {
661 WARN("The function requires OpenGL version '%c.%c' while your drivers only provide '%c.%c'\n", version
[0], version
[2], gl_version
[0], gl_version
[2]);
667 static const OpenGL_extension wgl_extensions
[] =
669 { "wglCreateContextAttribsARB", "WGL_ARB_create_context", wglCreateContextAttribsARB
},
670 { "wglMakeContextCurrentARB", "WGL_ARB_make_current_read", wglMakeContextCurrentARB
},
673 /***********************************************************************
674 * wglGetProcAddress (OPENGL32.@)
676 PROC WINAPI
wglGetProcAddress(LPCSTR lpszProc
) {
678 OpenGL_extension ext
;
679 const OpenGL_extension
*ext_ret
;
680 struct wgl_handle
*context
= get_current_handle_ptr();
682 TRACE("(%s)\n", lpszProc
);
684 if (lpszProc
== NULL
)
687 /* Without an active context opengl32 doesn't know to what
688 * driver it has to dispatch wglGetProcAddress.
692 WARN("No active WGL context found\n");
696 /* Search in the thunks to find the real name of the extension */
698 ext_ret
= bsearch(&ext
, extension_registry
, extension_registry_size
,
699 sizeof(OpenGL_extension
), compar
);
701 /* If nothing was found, we are looking for a WGL extension or an unknown GL extension. */
702 if (ext_ret
== NULL
) {
703 /* If the function name starts with a 'w', it is a WGL extension */
704 if(lpszProc
[0] == 'w')
706 local_func
= context
->funcs
->p_wglGetProcAddress( lpszProc
);
707 if (local_func
== (void *)1) /* special function that needs a wrapper */
709 ext_ret
= bsearch( &ext
, wgl_extensions
, sizeof(wgl_extensions
)/sizeof(wgl_extensions
[0]),
710 sizeof(OpenGL_extension
), compar
);
711 if (ext_ret
) return ext_ret
->func
;
713 FIXME( "wrapper missing for %s\n", lpszProc
);
719 /* We are dealing with an unknown GL extension */
720 WARN("Extension '%s' not defined in opengl32.dll's function table!\n", lpszProc
);
722 } else { /* We are looking for an OpenGL extension */
724 /* Check if the GL extension required by the function is available */
725 if(!is_extension_supported(ext_ret
->extension
)) {
726 WARN("Extension '%s' required by function '%s' not supported!\n", ext_ret
->extension
, lpszProc
);
729 local_func
= context
->funcs
->p_wglGetProcAddress( ext_ret
->name
);
731 /* After that, look at the extensions defined in the Linux OpenGL library */
732 if (local_func
== NULL
) {
736 /* Remove the last 3 letters (EXT, ARB, ...).
738 I know that some extensions have more than 3 letters (MESA, NV,
739 INTEL, ...), but this is only a stop-gap measure to fix buggy
740 OpenGL drivers (moreover, it is only useful for old 1.0 apps
741 that query the glBindTextureEXT extension).
743 memcpy(buf
, ext_ret
->name
, strlen(ext_ret
->name
) - 3);
744 buf
[strlen(ext_ret
->name
) - 3] = '\0';
745 TRACE("Extension not found in the Linux OpenGL library, checking against libGL bug with %s..\n", buf
);
747 ret
= GetProcAddress(opengl32_handle
, buf
);
749 TRACE("Found function in main OpenGL library (%p)!\n", ret
);
751 WARN("Did not find function %s (%s) in your OpenGL library!\n", lpszProc
, ext_ret
->name
);
756 TRACE("returning function (%p)\n", ext_ret
->func
);
757 extension_funcs
[ext_ret
- extension_registry
] = local_func
;
759 return ext_ret
->func
;
764 /***********************************************************************
765 * wglRealizeLayerPalette (OPENGL32.@)
767 BOOL WINAPI
wglRealizeLayerPalette(HDC hdc
,
775 /***********************************************************************
776 * wglSetLayerPaletteEntries (OPENGL32.@)
778 int WINAPI
wglSetLayerPaletteEntries(HDC hdc
,
782 const COLORREF
*pcr
) {
783 FIXME("(): stub!\n");
788 /***********************************************************************
789 * wglSwapLayerBuffers (OPENGL32.@)
791 BOOL WINAPI
wglSwapLayerBuffers(HDC hdc
,
793 TRACE_(opengl
)("(%p, %08x)\n", hdc
, fuPlanes
);
795 if (fuPlanes
& WGL_SWAP_MAIN_PLANE
) {
796 if (!GdiSwapBuffers(hdc
)) return FALSE
;
797 fuPlanes
&= ~WGL_SWAP_MAIN_PLANE
;
801 WARN("Following layers unhandled: %08x\n", fuPlanes
);
807 /***********************************************************************
808 * wglUseFontBitmaps_common
810 static BOOL
wglUseFontBitmaps_common( HDC hdc
, DWORD first
, DWORD count
, DWORD listBase
, BOOL unicode
)
813 unsigned int glyph
, size
= 0;
814 void *bitmap
= NULL
, *gl_bitmap
= NULL
;
818 glGetIntegerv(GL_UNPACK_ALIGNMENT
, &org_alignment
);
819 glPixelStorei(GL_UNPACK_ALIGNMENT
, 4);
821 for (glyph
= first
; glyph
< first
+ count
; glyph
++) {
822 static const MAT2 identity
= { {0,1},{0,0},{0,0},{0,1} };
823 unsigned int needed_size
, height
, width
, width_int
;
826 needed_size
= GetGlyphOutlineW(hdc
, glyph
, GGO_BITMAP
, &gm
, 0, NULL
, &identity
);
828 needed_size
= GetGlyphOutlineA(hdc
, glyph
, GGO_BITMAP
, &gm
, 0, NULL
, &identity
);
830 TRACE("Glyph: %3d / List: %d size %d\n", glyph
, listBase
, needed_size
);
831 if (needed_size
== GDI_ERROR
) {
836 if (needed_size
> size
) {
838 HeapFree(GetProcessHeap(), 0, bitmap
);
839 HeapFree(GetProcessHeap(), 0, gl_bitmap
);
840 bitmap
= HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY
, size
);
841 gl_bitmap
= HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY
, size
);
844 ret
= (GetGlyphOutlineW(hdc
, glyph
, GGO_BITMAP
, &gm
, size
, bitmap
, &identity
) != GDI_ERROR
);
846 ret
= (GetGlyphOutlineA(hdc
, glyph
, GGO_BITMAP
, &gm
, size
, bitmap
, &identity
) != GDI_ERROR
);
850 unsigned int bitmask
;
851 unsigned char *bitmap_
= bitmap
;
853 TRACE(" - bbox: %d x %d\n", gm
.gmBlackBoxX
, gm
.gmBlackBoxY
);
854 TRACE(" - origin: (%d, %d)\n", gm
.gmptGlyphOrigin
.x
, gm
.gmptGlyphOrigin
.y
);
855 TRACE(" - increment: %d - %d\n", gm
.gmCellIncX
, gm
.gmCellIncY
);
856 if (needed_size
!= 0) {
857 TRACE(" - bitmap:\n");
858 for (height
= 0; height
< gm
.gmBlackBoxY
; height
++) {
860 for (width
= 0, bitmask
= 0x80; width
< gm
.gmBlackBoxX
; width
++, bitmask
>>= 1) {
865 if (*bitmap_
& bitmask
)
870 bitmap_
+= (4 - ((UINT_PTR
)bitmap_
& 0x03));
876 /* In OpenGL, the bitmap is drawn from the bottom to the top... So we need to invert the
877 * glyph for it to be drawn properly.
879 if (needed_size
!= 0) {
880 width_int
= (gm
.gmBlackBoxX
+ 31) / 32;
881 for (height
= 0; height
< gm
.gmBlackBoxY
; height
++) {
882 for (width
= 0; width
< width_int
; width
++) {
883 ((int *) gl_bitmap
)[(gm
.gmBlackBoxY
- height
- 1) * width_int
+ width
] =
884 ((int *) bitmap
)[height
* width_int
+ width
];
889 glNewList(listBase
++, GL_COMPILE
);
890 if (needed_size
!= 0) {
891 glBitmap(gm
.gmBlackBoxX
, gm
.gmBlackBoxY
,
892 0 - gm
.gmptGlyphOrigin
.x
, (int) gm
.gmBlackBoxY
- gm
.gmptGlyphOrigin
.y
,
893 gm
.gmCellIncX
, gm
.gmCellIncY
,
896 /* This is the case of 'empty' glyphs like the space character */
897 glBitmap(0, 0, 0, 0, gm
.gmCellIncX
, gm
.gmCellIncY
, NULL
);
902 glPixelStorei(GL_UNPACK_ALIGNMENT
, org_alignment
);
903 HeapFree(GetProcessHeap(), 0, bitmap
);
904 HeapFree(GetProcessHeap(), 0, gl_bitmap
);
908 /***********************************************************************
909 * wglUseFontBitmapsA (OPENGL32.@)
911 BOOL WINAPI
wglUseFontBitmapsA(HDC hdc
, DWORD first
, DWORD count
, DWORD listBase
)
913 return wglUseFontBitmaps_common( hdc
, first
, count
, listBase
, FALSE
);
916 /***********************************************************************
917 * wglUseFontBitmapsW (OPENGL32.@)
919 BOOL WINAPI
wglUseFontBitmapsW(HDC hdc
, DWORD first
, DWORD count
, DWORD listBase
)
921 return wglUseFontBitmaps_common( hdc
, first
, count
, listBase
, TRUE
);
926 static void *load_libglu(void)
928 static int already_loaded
;
931 if (already_loaded
) return libglu_handle
;
934 TRACE("Trying to load GLU library: %s\n", SONAME_LIBGLU
);
935 handle
= wine_dlopen(SONAME_LIBGLU
, RTLD_NOW
, NULL
, 0);
938 WARN("Failed to load %s\n", SONAME_LIBGLU
);
942 #define LOAD_FUNCPTR(f) if((p##f = wine_dlsym(handle, #f, NULL, 0)) == NULL) goto sym_not_found;
943 LOAD_FUNCPTR(gluNewTess
)
944 LOAD_FUNCPTR(gluDeleteTess
)
945 LOAD_FUNCPTR(gluTessBeginContour
)
946 LOAD_FUNCPTR(gluTessBeginPolygon
)
947 LOAD_FUNCPTR(gluTessCallback
)
948 LOAD_FUNCPTR(gluTessEndContour
)
949 LOAD_FUNCPTR(gluTessEndPolygon
)
950 LOAD_FUNCPTR(gluTessVertex
)
952 libglu_handle
= handle
;
956 WARN("Unable to load function ptrs from libGLU\n");
957 /* Close the library as we won't use it */
958 wine_dlclose(handle
, NULL
, 0);
962 static void fixed_to_double(POINTFX fixed
, UINT em_size
, GLdouble vertex
[3])
964 vertex
[0] = (fixed
.x
.value
+ (GLdouble
)fixed
.x
.fract
/ (1 << 16)) / em_size
;
965 vertex
[1] = (fixed
.y
.value
+ (GLdouble
)fixed
.y
.fract
/ (1 << 16)) / em_size
;
969 static void tess_callback_vertex(GLvoid
*vertex
)
971 GLdouble
*dbl
= vertex
;
972 TRACE("%f, %f, %f\n", dbl
[0], dbl
[1], dbl
[2]);
976 static void tess_callback_begin(GLenum which
)
978 TRACE("%d\n", which
);
982 static void tess_callback_end(void)
988 /***********************************************************************
989 * wglUseFontOutlines_common
991 static BOOL
wglUseFontOutlines_common(HDC hdc
,
998 LPGLYPHMETRICSFLOAT lpgmf
,
1002 const MAT2 identity
= {{0,1},{0,0},{0,0},{0,1}};
1003 GLUtesselator
*tess
;
1005 HFONT old_font
, unscaled_font
;
1006 UINT em_size
= 1024;
1009 TRACE("(%p, %d, %d, %d, %f, %f, %d, %p, %s)\n", hdc
, first
, count
,
1010 listBase
, deviation
, extrusion
, format
, lpgmf
, unicode
? "W" : "A");
1014 ERR("libGLU is required for this function but isn't loaded\n");
1018 tess
= pgluNewTess();
1019 if(!tess
) return FALSE
;
1020 pgluTessCallback(tess
, GLU_TESS_VERTEX
, (_GLUfuncptr
)tess_callback_vertex
);
1021 pgluTessCallback(tess
, GLU_TESS_BEGIN
, (_GLUfuncptr
)tess_callback_begin
);
1022 pgluTessCallback(tess
, GLU_TESS_END
, tess_callback_end
);
1024 GetObjectW(GetCurrentObject(hdc
, OBJ_FONT
), sizeof(lf
), &lf
);
1025 rc
.left
= rc
.right
= rc
.bottom
= 0;
1027 DPtoLP(hdc
, (POINT
*)&rc
, 2);
1028 lf
.lfHeight
= -abs(rc
.top
- rc
.bottom
);
1029 lf
.lfOrientation
= lf
.lfEscapement
= 0;
1030 unscaled_font
= CreateFontIndirectW(&lf
);
1031 old_font
= SelectObject(hdc
, unscaled_font
);
1033 for (glyph
= first
; glyph
< first
+ count
; glyph
++)
1038 TTPOLYGONHEADER
*pph
;
1043 needed
= GetGlyphOutlineW(hdc
, glyph
, GGO_NATIVE
, &gm
, 0, NULL
, &identity
);
1045 needed
= GetGlyphOutlineA(hdc
, glyph
, GGO_NATIVE
, &gm
, 0, NULL
, &identity
);
1047 if(needed
== GDI_ERROR
)
1050 buf
= HeapAlloc(GetProcessHeap(), 0, needed
);
1051 vertices
= HeapAlloc(GetProcessHeap(), 0, needed
/ sizeof(POINTFX
) * 3 * sizeof(GLdouble
));
1054 GetGlyphOutlineW(hdc
, glyph
, GGO_NATIVE
, &gm
, needed
, buf
, &identity
);
1056 GetGlyphOutlineA(hdc
, glyph
, GGO_NATIVE
, &gm
, needed
, buf
, &identity
);
1058 TRACE("glyph %d\n", glyph
);
1062 lpgmf
->gmfBlackBoxX
= (float)gm
.gmBlackBoxX
/ em_size
;
1063 lpgmf
->gmfBlackBoxY
= (float)gm
.gmBlackBoxY
/ em_size
;
1064 lpgmf
->gmfptGlyphOrigin
.x
= (float)gm
.gmptGlyphOrigin
.x
/ em_size
;
1065 lpgmf
->gmfptGlyphOrigin
.y
= (float)gm
.gmptGlyphOrigin
.y
/ em_size
;
1066 lpgmf
->gmfCellIncX
= (float)gm
.gmCellIncX
/ em_size
;
1067 lpgmf
->gmfCellIncY
= (float)gm
.gmCellIncY
/ em_size
;
1069 TRACE("%fx%f at %f,%f inc %f,%f\n", lpgmf
->gmfBlackBoxX
, lpgmf
->gmfBlackBoxY
,
1070 lpgmf
->gmfptGlyphOrigin
.x
, lpgmf
->gmfptGlyphOrigin
.y
, lpgmf
->gmfCellIncX
, lpgmf
->gmfCellIncY
);
1074 glNewList(listBase
++, GL_COMPILE
);
1075 pgluTessBeginPolygon(tess
, NULL
);
1077 pph
= (TTPOLYGONHEADER
*)buf
;
1078 while((BYTE
*)pph
< buf
+ needed
)
1080 TRACE("\tstart %d, %d\n", pph
->pfxStart
.x
.value
, pph
->pfxStart
.y
.value
);
1082 pgluTessBeginContour(tess
);
1084 fixed_to_double(pph
->pfxStart
, em_size
, vertices
);
1085 pgluTessVertex(tess
, vertices
, vertices
);
1088 ppc
= (TTPOLYCURVE
*)((char*)pph
+ sizeof(*pph
));
1089 while((char*)ppc
< (char*)pph
+ pph
->cb
)
1093 switch(ppc
->wType
) {
1095 for(i
= 0; i
< ppc
->cpfx
; i
++)
1097 TRACE("\t\tline to %d, %d\n", ppc
->apfx
[i
].x
.value
, ppc
->apfx
[i
].y
.value
);
1098 fixed_to_double(ppc
->apfx
[i
], em_size
, vertices
);
1099 pgluTessVertex(tess
, vertices
, vertices
);
1104 case TT_PRIM_QSPLINE
:
1105 for(i
= 0; i
< ppc
->cpfx
/2; i
++)
1107 /* FIXME: just connecting the control points for now */
1108 TRACE("\t\tcurve %d,%d %d,%d\n",
1109 ppc
->apfx
[i
* 2].x
.value
, ppc
->apfx
[i
* 3].y
.value
,
1110 ppc
->apfx
[i
* 2 + 1].x
.value
, ppc
->apfx
[i
* 3 + 1].y
.value
);
1111 fixed_to_double(ppc
->apfx
[i
* 2], em_size
, vertices
);
1112 pgluTessVertex(tess
, vertices
, vertices
);
1114 fixed_to_double(ppc
->apfx
[i
* 2 + 1], em_size
, vertices
);
1115 pgluTessVertex(tess
, vertices
, vertices
);
1120 ERR("\t\tcurve type = %d\n", ppc
->wType
);
1121 pgluTessEndContour(tess
);
1125 ppc
= (TTPOLYCURVE
*)((char*)ppc
+ sizeof(*ppc
) +
1126 (ppc
->cpfx
- 1) * sizeof(POINTFX
));
1128 pgluTessEndContour(tess
);
1129 pph
= (TTPOLYGONHEADER
*)((char*)pph
+ pph
->cb
);
1133 pgluTessEndPolygon(tess
);
1134 glTranslated((GLdouble
)gm
.gmCellIncX
/ em_size
, (GLdouble
)gm
.gmCellIncY
/ em_size
, 0.0);
1136 HeapFree(GetProcessHeap(), 0, buf
);
1137 HeapFree(GetProcessHeap(), 0, vertices
);
1141 DeleteObject(SelectObject(hdc
, old_font
));
1142 pgluDeleteTess(tess
);
1147 #else /* SONAME_LIBGLU */
1149 static BOOL
wglUseFontOutlines_common(HDC hdc
,
1156 LPGLYPHMETRICSFLOAT lpgmf
,
1159 FIXME("Unable to compile in wglUseFontOutlines support without GL/glu.h\n");
1163 #endif /* SONAME_LIBGLU */
1165 /***********************************************************************
1166 * wglUseFontOutlinesA (OPENGL32.@)
1168 BOOL WINAPI
wglUseFontOutlinesA(HDC hdc
,
1175 LPGLYPHMETRICSFLOAT lpgmf
)
1177 return wglUseFontOutlines_common(hdc
, first
, count
, listBase
, deviation
, extrusion
, format
, lpgmf
, FALSE
);
1180 /***********************************************************************
1181 * wglUseFontOutlinesW (OPENGL32.@)
1183 BOOL WINAPI
wglUseFontOutlinesW(HDC hdc
,
1190 LPGLYPHMETRICSFLOAT lpgmf
)
1192 return wglUseFontOutlines_common(hdc
, first
, count
, listBase
, deviation
, extrusion
, format
, lpgmf
, TRUE
);
1195 /***********************************************************************
1196 * glDebugEntry (OPENGL32.@)
1198 GLint WINAPI
wine_glDebugEntry( GLint unknown1
, GLint unknown2
)
1203 /***********************************************************************
1204 * glFinish (OPENGL32.@)
1206 void WINAPI
wine_glFinish( void )
1209 wine_wgl
.p_wglFinish();
1212 /***********************************************************************
1213 * glFlush (OPENGL32.@)
1215 void WINAPI
wine_glFlush( void )
1218 wine_wgl
.p_wglFlush();
1221 /* build the extension string by filtering out the disabled extensions */
1222 static char *build_gl_extensions( const char *extensions
)
1224 char *p
, *str
, *disabled
= NULL
;
1228 TRACE( "GL_EXTENSIONS:\n" );
1230 if (!extensions
) extensions
= "";
1232 /* @@ Wine registry key: HKCU\Software\Wine\OpenGL */
1233 if (!RegOpenKeyA( HKEY_CURRENT_USER
, "Software\\Wine\\OpenGL", &hkey
))
1235 DWORD size
, ret
= RegQueryValueExA( hkey
, "DisabledExtensions", 0, NULL
, NULL
, &size
);
1236 if (!ret
&& (disabled
= HeapAlloc( GetProcessHeap(), 0, size
)))
1237 ret
= RegQueryValueExA( hkey
, "DisabledExtensions", 0, NULL
, (BYTE
*)disabled
, &size
);
1238 RegCloseKey( hkey
);
1239 if (ret
) *disabled
= 0;
1242 if ((str
= HeapAlloc( GetProcessHeap(), 0, strlen(extensions
) + 2 )))
1247 while (*extensions
== ' ') extensions
++;
1248 if (!*extensions
) break;
1249 if (!(end
= strchr( extensions
, ' ' ))) end
= extensions
+ strlen( extensions
);
1250 memcpy( p
, extensions
, end
- extensions
);
1251 p
[end
- extensions
] = 0;
1252 if (!has_extension( disabled
, p
))
1254 TRACE("++ %s\n", p
);
1255 p
+= end
- extensions
;
1258 else TRACE("-- %s (disabled by config)\n", p
);
1263 HeapFree( GetProcessHeap(), 0, disabled
);
1267 /***********************************************************************
1268 * glGetString (OPENGL32.@)
1270 const GLubyte
* WINAPI
wine_glGetString( GLenum name
)
1272 static const GLubyte
*gl_extensions
;
1274 /* this is for buggy nvidia driver, crashing if called from a different
1275 thread with no context */
1276 if(wglGetCurrentContext() == NULL
)
1279 if (name
!= GL_EXTENSIONS
) return glGetString(name
);
1283 const char *orig_ext
= (const char *)glGetString(GL_EXTENSIONS
);
1284 char *new_ext
= build_gl_extensions( orig_ext
);
1285 if (InterlockedCompareExchangePointer( (void **)&gl_extensions
, new_ext
, NULL
))
1286 HeapFree( GetProcessHeap(), 0, new_ext
);
1288 return gl_extensions
;
1291 /***********************************************************************
1292 * glGetIntegerv (OPENGL32.@)
1294 void WINAPI
wine_glGetIntegerv( GLenum pname
, GLint
* params
)
1296 wine_wgl
.p_wglGetIntegerv(pname
, params
);
1299 /***********************************************************************
1300 * wglSwapBuffers (OPENGL32.@)
1302 BOOL WINAPI DECLSPEC_HOTPATCH
wglSwapBuffers( HDC hdc
)
1304 return GdiSwapBuffers(hdc
);
1307 /* This is for brain-dead applications that use OpenGL functions before even
1308 creating a rendering context.... */
1309 static BOOL
process_attach(void)
1311 HDC hdc
= GetDC( 0 );
1312 const struct wgl_funcs
*funcs
= get_dc_funcs( hdc
);
1314 ReleaseDC( 0, hdc
);
1316 /* internal WGL functions */
1317 wine_wgl
.p_wglFinish
= (void *)funcs
->p_wglGetProcAddress("wglFinish");
1318 wine_wgl
.p_wglFlush
= (void *)funcs
->p_wglGetProcAddress("wglFlush");
1319 wine_wgl
.p_wglGetIntegerv
= (void *)funcs
->p_wglGetProcAddress("wglGetIntegerv");
1324 /**********************************************************************/
1326 static void process_detach(void)
1328 if (libglu_handle
) wine_dlclose(libglu_handle
, NULL
, 0);
1331 /***********************************************************************
1332 * OpenGL initialisation routine
1334 BOOL WINAPI
DllMain( HINSTANCE hinst
, DWORD reason
, LPVOID reserved
)
1338 case DLL_PROCESS_ATTACH
:
1339 opengl32_handle
= hinst
;
1340 DisableThreadLibraryCalls(hinst
);
1341 return process_attach();
1342 case DLL_PROCESS_DETACH
: