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83be88953b
wine/dlls/opengl32/wgl.c
Alexandre Julliard 83be88953b opengl32: Make the WGL driver context-specific.
2012-06-29 20:41:36 +02:00

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/* Window-specific OpenGL functions implementation.
*
* Copyright (c) 1999 Lionel Ulmer
* Copyright (c) 2005 Raphael Junqueira
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "winreg.h"
#include "wingdi.h"
#include "winternl.h"
#include "winnt.h"
#include "opengl_ext.h"
#ifdef HAVE_GL_GLU_H
#undef far
#undef near
#include <GL/glu.h>
#endif
#include "wine/gdi_driver.h"
#include "wine/library.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(wgl);
WINE_DECLARE_DEBUG_CHANNEL(opengl);
static struct
{
/* internal WGL functions */
void (WINAPI *p_wglFinish)(void);
void (WINAPI *p_wglFlush)(void);
void (WINAPI *p_wglGetIntegerv)(GLenum pname, GLint* params);
} wine_wgl;
#ifdef SONAME_LIBGLU
#define MAKE_FUNCPTR(f) static typeof(f) * p##f;
MAKE_FUNCPTR(gluNewTess)
MAKE_FUNCPTR(gluDeleteTess)
MAKE_FUNCPTR(gluTessBeginContour)
MAKE_FUNCPTR(gluTessBeginPolygon)
MAKE_FUNCPTR(gluTessCallback)
MAKE_FUNCPTR(gluTessEndContour)
MAKE_FUNCPTR(gluTessEndPolygon)
MAKE_FUNCPTR(gluTessVertex)
#undef MAKE_FUNCPTR
#endif /* SONAME_LIBGLU */
static HMODULE opengl32_handle;
static void* libglu_handle = NULL;
const GLubyte * WINAPI wine_glGetString( GLenum name );
/* internal GDI functions */
extern INT WINAPI GdiDescribePixelFormat( HDC hdc, INT fmt, UINT size, PIXELFORMATDESCRIPTOR *pfd );
extern BOOL WINAPI GdiSetPixelFormat( HDC hdc, INT fmt, const PIXELFORMATDESCRIPTOR *pfd );
extern BOOL WINAPI GdiSwapBuffers( HDC hdc );
/* handle management */
#define MAX_WGL_HANDLES 1024
struct wgl_handle
{
UINT handle;
DWORD tid;
struct wgl_context * context;
const struct wgl_funcs *funcs;
};
static struct wgl_handle wgl_handles[MAX_WGL_HANDLES];
static struct wgl_handle *next_free;
static unsigned int handle_count;
static CRITICAL_SECTION wgl_section;
static CRITICAL_SECTION_DEBUG critsect_debug =
{
0, 0, &wgl_section,
{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": wgl_section") }
};
static CRITICAL_SECTION wgl_section = { &critsect_debug, -1, 0, 0, 0, 0 };
static inline const struct wgl_funcs *get_dc_funcs( HDC hdc )
{
return __wine_get_wgl_driver( hdc, WINE_GDI_DRIVER_VERSION );
}
static inline HGLRC next_handle( struct wgl_handle *ptr )
{
WORD generation = HIWORD( ptr->handle ) + 1;
if (!generation) generation++;
ptr->handle = MAKELONG( ptr - wgl_handles, generation );
return ULongToHandle( ptr->handle );
}
/* the current handle is assumed valid and doesn't need locking */
static inline struct wgl_handle *get_current_handle_ptr(void)
{
if (!NtCurrentTeb()->glCurrentRC) return NULL;
return &wgl_handles[LOWORD(NtCurrentTeb()->glCurrentRC)];
}
static struct wgl_handle *get_handle_ptr( HGLRC handle )
{
unsigned int index = LOWORD( handle );
EnterCriticalSection( &wgl_section );
if (index < handle_count && ULongToHandle(wgl_handles[index].handle) == handle)
return &wgl_handles[index];
LeaveCriticalSection( &wgl_section );
SetLastError( ERROR_INVALID_HANDLE );
return NULL;
}
static void release_handle_ptr( struct wgl_handle *ptr )
{
if (ptr) LeaveCriticalSection( &wgl_section );
}
static HGLRC alloc_handle( struct wgl_context *context, const struct wgl_funcs *funcs )
{
HGLRC handle = 0;
struct wgl_handle *ptr = NULL;
EnterCriticalSection( &wgl_section );
if ((ptr = next_free))
next_free = (struct wgl_handle *)next_free->context;
else if (handle_count < MAX_WGL_HANDLES)
ptr = &wgl_handles[handle_count++];
if (ptr)
{
ptr->context = context;
ptr->funcs = funcs;
handle = next_handle( ptr );
}
else SetLastError( ERROR_NOT_ENOUGH_MEMORY );
LeaveCriticalSection( &wgl_section );
return handle;
}
static void free_handle_ptr( struct wgl_handle *ptr )
{
ptr->handle &= ~0xffff;
ptr->context = (struct wgl_context *)next_free;
ptr->funcs = NULL;
next_free = ptr;
LeaveCriticalSection( &wgl_section );
}
/***********************************************************************
* wglSetPixelFormat(OPENGL32.@)
*/
BOOL WINAPI wglSetPixelFormat( HDC hdc, INT iPixelFormat,
const PIXELFORMATDESCRIPTOR *ppfd)
{
return GdiSetPixelFormat(hdc, iPixelFormat, ppfd);
}
/***********************************************************************
* wglCopyContext (OPENGL32.@)
*/
BOOL WINAPI wglCopyContext(HGLRC hglrcSrc, HGLRC hglrcDst, UINT mask)
{
struct wgl_handle *src, *dst;
BOOL ret = FALSE;
if (!(src = get_handle_ptr( hglrcSrc ))) return FALSE;
if ((dst = get_handle_ptr( hglrcDst )))
{
if (src->funcs != dst->funcs) SetLastError( ERROR_INVALID_HANDLE );
else ret = src->funcs->p_wglCopyContext( src->context, dst->context, mask );
}
release_handle_ptr( dst );
release_handle_ptr( src );
return ret;
}
/***********************************************************************
* wglDeleteContext (OPENGL32.@)
*/
BOOL WINAPI wglDeleteContext(HGLRC hglrc)
{
struct wgl_handle *ptr = get_handle_ptr( hglrc );
if (!ptr) return FALSE;
if (ptr->tid && ptr->tid != GetCurrentThreadId())
{
SetLastError( ERROR_BUSY );
release_handle_ptr( ptr );
return FALSE;
}
if (hglrc == NtCurrentTeb()->glCurrentRC) wglMakeCurrent( 0, 0 );
ptr->funcs->p_wglDeleteContext( ptr->context );
free_handle_ptr( ptr );
return TRUE;
}
/***********************************************************************
* wglMakeCurrent (OPENGL32.@)
*/
BOOL WINAPI wglMakeCurrent(HDC hdc, HGLRC hglrc)
{
BOOL ret = TRUE;
struct wgl_handle *ptr, *prev = get_current_handle_ptr();
if (hglrc)
{
if (!(ptr = get_handle_ptr( hglrc ))) return FALSE;
if (!ptr->tid || ptr->tid == GetCurrentThreadId())
{
ret = ptr->funcs->p_wglMakeCurrent( hdc, ptr->context );
if (ret)
{
if (prev) prev->tid = 0;
ptr->tid = GetCurrentThreadId();
NtCurrentTeb()->glCurrentRC = hglrc;
}
}
else
{
SetLastError( ERROR_BUSY );
ret = FALSE;
}
release_handle_ptr( ptr );
}
else if (prev)
{
if (!prev->funcs->p_wglMakeCurrent( 0, NULL )) return FALSE;
prev->tid = 0;
NtCurrentTeb()->glCurrentRC = 0;
}
else if (!hdc)
{
SetLastError( ERROR_INVALID_HANDLE );
ret = FALSE;
}
return ret;
}
/***********************************************************************
* wglCreateContextAttribsARB (wrapper for the extension function returned by the driver)
*/
static HGLRC WINAPI wglCreateContextAttribsARB( HDC hdc, HGLRC share, const int *attribs )
{
HGLRC ret = 0;
struct wgl_context *context;
struct wgl_handle *share_ptr = NULL;
const struct wgl_funcs *funcs = get_dc_funcs( hdc );
if (!funcs) return 0;
if (share && !(share_ptr = get_handle_ptr( share ))) return 0;
if ((context = funcs->p_wglCreateContextAttribsARB( hdc, share_ptr ? share_ptr->context : NULL,
attribs )))
{
ret = alloc_handle( context, funcs );
if (!ret) funcs->p_wglDeleteContext( context );
}
release_handle_ptr( share_ptr );
return ret;
}
/***********************************************************************
* wglMakeContextCurrentARB (wrapper for the extension function returned by the driver)
*/
static BOOL WINAPI wglMakeContextCurrentARB( HDC draw_hdc, HDC read_hdc, HGLRC hglrc )
{
BOOL ret = TRUE;
struct wgl_handle *ptr, *prev = get_current_handle_ptr();
if (hglrc)
{
if (!(ptr = get_handle_ptr( hglrc ))) return FALSE;
if (!ptr->tid || ptr->tid == GetCurrentThreadId())
{
ret = ptr->funcs->p_wglMakeContextCurrentARB( draw_hdc, read_hdc, ptr->context );
if (ret)
{
if (prev) prev->tid = 0;
ptr->tid = GetCurrentThreadId();
NtCurrentTeb()->glCurrentRC = hglrc;
}
}
else
{
SetLastError( ERROR_BUSY );
ret = FALSE;
}
release_handle_ptr( ptr );
}
else if (prev)
{
if (!prev->funcs->p_wglMakeCurrent( 0, NULL )) return FALSE;
prev->tid = 0;
NtCurrentTeb()->glCurrentRC = 0;
}
return ret;
}
/***********************************************************************
* wglShareLists (OPENGL32.@)
*/
BOOL WINAPI wglShareLists(HGLRC hglrcSrc, HGLRC hglrcDst)
{
BOOL ret = FALSE;
struct wgl_handle *src, *dst;
if (!(src = get_handle_ptr( hglrcSrc ))) return FALSE;
if ((dst = get_handle_ptr( hglrcDst )))
{
if (src->funcs != dst->funcs) SetLastError( ERROR_INVALID_HANDLE );
else ret = src->funcs->p_wglShareLists( src->context, dst->context );
}
release_handle_ptr( dst );
release_handle_ptr( src );
return ret;
}
/***********************************************************************
* wglGetCurrentDC (OPENGL32.@)
*/
HDC WINAPI wglGetCurrentDC(void)
{
struct wgl_handle *context = get_current_handle_ptr();
if (!context) return 0;
return context->funcs->p_wglGetCurrentDC( context->context );
}
/***********************************************************************
* wglCreateContext (OPENGL32.@)
*/
HGLRC WINAPI wglCreateContext(HDC hdc)
{
HGLRC ret = 0;
struct wgl_context *context;
const struct wgl_funcs *funcs = get_dc_funcs( hdc );
if (!funcs) return 0;
if (!(context = funcs->p_wglCreateContext( hdc ))) return 0;
ret = alloc_handle( context, funcs );
if (!ret) funcs->p_wglDeleteContext( context );
return ret;
}
/***********************************************************************
* wglGetCurrentContext (OPENGL32.@)
*/
HGLRC WINAPI wglGetCurrentContext(void)
{
return NtCurrentTeb()->glCurrentRC;
}
/***********************************************************************
* wglChoosePixelFormat (OPENGL32.@)
*/
INT WINAPI wglChoosePixelFormat(HDC hdc, const PIXELFORMATDESCRIPTOR* ppfd)
{
PIXELFORMATDESCRIPTOR format, best;
int i, count, best_format;
int bestDBuffer = -1, bestStereo = -1;
TRACE_(wgl)( "%p %p: size %u version %u flags %u type %u color %u %u,%u,%u,%u "
"accum %u depth %u stencil %u aux %u\n",
hdc, ppfd, ppfd->nSize, ppfd->nVersion, ppfd->dwFlags, ppfd->iPixelType,
ppfd->cColorBits, ppfd->cRedBits, ppfd->cGreenBits, ppfd->cBlueBits, ppfd->cAlphaBits,
ppfd->cAccumBits, ppfd->cDepthBits, ppfd->cStencilBits, ppfd->cAuxBuffers );
count = GdiDescribePixelFormat( hdc, 0, 0, NULL );
if (!count) return 0;
best_format = 0;
best.dwFlags = 0;
best.cAlphaBits = -1;
best.cColorBits = -1;
best.cDepthBits = -1;
best.cStencilBits = -1;
best.cAuxBuffers = -1;
for (i = 1; i <= count; i++)
{
if (!GdiDescribePixelFormat( hdc, i, sizeof(format), &format )) continue;
if (ppfd->iPixelType != format.iPixelType)
{
TRACE( "pixel type mismatch for iPixelFormat=%d\n", i );
continue;
}
/* only use bitmap capable for formats for bitmap rendering */
if( (ppfd->dwFlags & PFD_DRAW_TO_BITMAP) != (format.dwFlags & PFD_DRAW_TO_BITMAP))
{
TRACE( "PFD_DRAW_TO_BITMAP mismatch for iPixelFormat=%d\n", i );
continue;
}
/* The behavior of PDF_STEREO/PFD_STEREO_DONTCARE and PFD_DOUBLEBUFFER / PFD_DOUBLEBUFFER_DONTCARE
* is not very clear on MSDN. They specify that ChoosePixelFormat tries to match pixel formats
* with the flag (PFD_STEREO / PFD_DOUBLEBUFFERING) set. Otherwise it says that it tries to match
* formats without the given flag set.
* A test on Windows using a Radeon 9500pro on WinXP (the driver doesn't support Stereo)
* has indicated that a format without stereo is returned when stereo is unavailable.
* So in case PFD_STEREO is set, formats that support it should have priority above formats
* without. In case PFD_STEREO_DONTCARE is set, stereo is ignored.
*
* To summarize the following is most likely the correct behavior:
* stereo not set -> prefer non-stereo formats, but also accept stereo formats
* stereo set -> prefer stereo formats, but also accept non-stereo formats
* stereo don't care -> it doesn't matter whether we get stereo or not
*
* In Wine we will treat non-stereo the same way as don't care because it makes
* format selection even more complicated and second drivers with Stereo advertise
* each format twice anyway.
*/
/* Doublebuffer, see the comments above */
if (!(ppfd->dwFlags & PFD_DOUBLEBUFFER_DONTCARE))
{
if (((ppfd->dwFlags & PFD_DOUBLEBUFFER) != bestDBuffer) &&
((format.dwFlags & PFD_DOUBLEBUFFER) == (ppfd->dwFlags & PFD_DOUBLEBUFFER)))
goto found;
if (bestDBuffer != -1 && (format.dwFlags & PFD_DOUBLEBUFFER) != bestDBuffer) continue;
}
/* Stereo, see the comments above. */
if (!(ppfd->dwFlags & PFD_STEREO_DONTCARE))
{
if (((ppfd->dwFlags & PFD_STEREO) != bestStereo) &&
((format.dwFlags & PFD_STEREO) == (ppfd->dwFlags & PFD_STEREO)))
goto found;
if (bestStereo != -1 && (format.dwFlags & PFD_STEREO) != bestStereo) continue;
}
/* Below we will do a number of checks to select the 'best' pixelformat.
* We assume the precedence cColorBits > cAlphaBits > cDepthBits > cStencilBits -> cAuxBuffers.
* The code works by trying to match the most important options as close as possible.
* When a reasonable format is found, we will try to match more options.
* It appears (see the opengl32 test) that Windows opengl drivers ignore options
* like cColorBits, cAlphaBits and friends if they are set to 0, so they are considered
* as DONTCARE. At least Serious Sam TSE relies on this behavior. */
if (ppfd->cColorBits)
{
if (((ppfd->cColorBits > best.cColorBits) && (format.cColorBits > best.cColorBits)) ||
((format.cColorBits >= ppfd->cColorBits) && (format.cColorBits < best.cColorBits)))
goto found;
if (best.cColorBits != format.cColorBits) /* Do further checks if the format is compatible */
{
TRACE( "color mismatch for iPixelFormat=%d\n", i );
continue;
}
}
if (ppfd->cAlphaBits)
{
if (((ppfd->cAlphaBits > best.cAlphaBits) && (format.cAlphaBits > best.cAlphaBits)) ||
((format.cAlphaBits >= ppfd->cAlphaBits) && (format.cAlphaBits < best.cAlphaBits)))
goto found;
if (best.cAlphaBits != format.cAlphaBits)
{
TRACE( "alpha mismatch for iPixelFormat=%d\n", i );
continue;
}
}
if (ppfd->cDepthBits)
{
if (((ppfd->cDepthBits > best.cDepthBits) && (format.cDepthBits > best.cDepthBits)) ||
((format.cDepthBits >= ppfd->cDepthBits) && (format.cDepthBits < best.cDepthBits)))
goto found;
if (best.cDepthBits != format.cDepthBits)
{
TRACE( "depth mismatch for iPixelFormat=%d\n", i );
continue;
}
}
if (ppfd->cStencilBits)
{
if (((ppfd->cStencilBits > best.cStencilBits) && (format.cStencilBits > best.cStencilBits)) ||
((format.cStencilBits >= ppfd->cStencilBits) && (format.cStencilBits < best.cStencilBits)))
goto found;
if (best.cStencilBits != format.cStencilBits)
{
TRACE( "stencil mismatch for iPixelFormat=%d\n", i );
continue;
}
}
if (ppfd->cAuxBuffers)
{
if (((ppfd->cAuxBuffers > best.cAuxBuffers) && (format.cAuxBuffers > best.cAuxBuffers)) ||
((format.cAuxBuffers >= ppfd->cAuxBuffers) && (format.cAuxBuffers < best.cAuxBuffers)))
goto found;
if (best.cAuxBuffers != format.cAuxBuffers)
{
TRACE( "aux mismatch for iPixelFormat=%d\n", i );
continue;
}
}
continue;
found:
best_format = i;
best = format;
bestDBuffer = format.dwFlags & PFD_DOUBLEBUFFER;
bestStereo = format.dwFlags & PFD_STEREO;
}
TRACE( "returning %u\n", best_format );
return best_format;
}
/***********************************************************************
* wglDescribePixelFormat (OPENGL32.@)
*/
INT WINAPI wglDescribePixelFormat(HDC hdc, INT iPixelFormat, UINT nBytes,
LPPIXELFORMATDESCRIPTOR ppfd)
{
return GdiDescribePixelFormat(hdc, iPixelFormat, nBytes, ppfd);
}
/***********************************************************************
* wglGetPixelFormat (OPENGL32.@)
*/
INT WINAPI wglGetPixelFormat(HDC hdc)
{
const struct wgl_funcs *funcs = get_dc_funcs( hdc );
if (!funcs) return 0;
return funcs->p_GetPixelFormat( hdc );
}
/***********************************************************************
* wglCreateLayerContext (OPENGL32.@)
*/
HGLRC WINAPI wglCreateLayerContext(HDC hdc,
int iLayerPlane) {
TRACE("(%p,%d)\n", hdc, iLayerPlane);
if (iLayerPlane == 0) {
return wglCreateContext(hdc);
}
FIXME("no handler for layer %d\n", iLayerPlane);
return NULL;
}
/***********************************************************************
* wglDescribeLayerPlane (OPENGL32.@)
*/
BOOL WINAPI wglDescribeLayerPlane(HDC hdc,
int iPixelFormat,
int iLayerPlane,
UINT nBytes,
LPLAYERPLANEDESCRIPTOR plpd) {
FIXME("(%p,%d,%d,%d,%p)\n", hdc, iPixelFormat, iLayerPlane, nBytes, plpd);
return FALSE;
}
/***********************************************************************
* wglGetLayerPaletteEntries (OPENGL32.@)
*/
int WINAPI wglGetLayerPaletteEntries(HDC hdc,
int iLayerPlane,
int iStart,
int cEntries,
const COLORREF *pcr) {
FIXME("(): stub!\n");
return 0;
}
/* check if the extension is present in the list */
static BOOL has_extension( const char *list, const char *ext )
{
size_t len = strlen( ext );
while (list)
{
while (*list == ' ') list++;
if (!strncmp( list, ext, len ) && (!list[len] || list[len] == ' ')) return TRUE;
list = strchr( list, ' ' );
}
return FALSE;
}
static int compar(const void *elt_a, const void *elt_b) {
return strcmp(((const OpenGL_extension *) elt_a)->name,
((const OpenGL_extension *) elt_b)->name);
}
/* Check if a GL extension is supported */
static BOOL is_extension_supported(const char* extension)
{
const char *gl_ext_string = (const char*)wine_glGetString(GL_EXTENSIONS);
TRACE("Checking for extension '%s'\n", extension);
if(!gl_ext_string) {
ERR("No OpenGL extensions found, check if your OpenGL setup is correct!\n");
return FALSE;
}
/* We use the GetProcAddress function from the display driver to retrieve function pointers
* for OpenGL and WGL extensions. In case of winex11.drv the OpenGL extension lookup is done
* using glXGetProcAddress. This function is quite unreliable in the sense that its specs don't
* require the function to return NULL when an extension isn't found. For this reason we check
* if the OpenGL extension required for the function we are looking up is supported. */
/* Check if the extension is part of the GL extension string to see if it is supported. */
if (has_extension(gl_ext_string, extension))
return TRUE;
/* In general an OpenGL function starts as an ARB/EXT extension and at some stage
* it becomes part of the core OpenGL library and can be reached without the ARB/EXT
* suffix as well. In the extension table, these functions contain GL_VERSION_major_minor.
* Check if we are searching for a core GL function */
if(strncmp(extension, "GL_VERSION_", 11) == 0)
{
const GLubyte *gl_version = glGetString(GL_VERSION);
const char *version = extension + 11; /* Move past 'GL_VERSION_' */
if(!gl_version) {
ERR("No OpenGL version found!\n");
return FALSE;
}
/* Compare the major/minor version numbers of the native OpenGL library and what is required by the function.
* The gl_version string is guaranteed to have at least a major/minor and sometimes it has a release number as well. */
if( (gl_version[0] >= version[0]) || ((gl_version[0] == version[0]) && (gl_version[2] >= version[2])) ) {
return TRUE;
}
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]);
}
return FALSE;
}
static const OpenGL_extension wgl_extensions[] =
{
{ "wglCreateContextAttribsARB", "WGL_ARB_create_context", wglCreateContextAttribsARB },
{ "wglMakeContextCurrentARB", "WGL_ARB_make_current_read", wglMakeContextCurrentARB },
};
/***********************************************************************
* wglGetProcAddress (OPENGL32.@)
*/
PROC WINAPI wglGetProcAddress(LPCSTR lpszProc) {
void *local_func;
OpenGL_extension ext;
const OpenGL_extension *ext_ret;
struct wgl_handle *context = get_current_handle_ptr();
TRACE("(%s)\n", lpszProc);
if (lpszProc == NULL)
return NULL;
/* Without an active context opengl32 doesn't know to what
* driver it has to dispatch wglGetProcAddress.
*/
if (!context)
{
WARN("No active WGL context found\n");
return NULL;
}
/* Search in the thunks to find the real name of the extension */
ext.name = lpszProc;
ext_ret = bsearch(&ext, extension_registry, extension_registry_size,
sizeof(OpenGL_extension), compar);
/* If nothing was found, we are looking for a WGL extension or an unknown GL extension. */
if (ext_ret == NULL) {
/* If the function name starts with a 'w', it is a WGL extension */
if(lpszProc[0] == 'w')
{
local_func = context->funcs->p_wglGetProcAddress( lpszProc );
if (local_func == (void *)1) /* special function that needs a wrapper */
{
ext_ret = bsearch( &ext, wgl_extensions, sizeof(wgl_extensions)/sizeof(wgl_extensions[0]),
sizeof(OpenGL_extension), compar );
if (ext_ret) return ext_ret->func;
FIXME( "wrapper missing for %s\n", lpszProc );
return NULL;
}
return local_func;
}
/* We are dealing with an unknown GL extension */
WARN("Extension '%s' not defined in opengl32.dll's function table!\n", lpszProc);
return NULL;
} else { /* We are looking for an OpenGL extension */
/* Check if the GL extension required by the function is available */
if(!is_extension_supported(ext_ret->extension)) {
WARN("Extension '%s' required by function '%s' not supported!\n", ext_ret->extension, lpszProc);
}
local_func = context->funcs->p_wglGetProcAddress( ext_ret->name );
/* After that, look at the extensions defined in the Linux OpenGL library */
if (local_func == NULL) {
char buf[256];
void *ret = NULL;
/* Remove the last 3 letters (EXT, ARB, ...).
I know that some extensions have more than 3 letters (MESA, NV,
INTEL, ...), but this is only a stop-gap measure to fix buggy
OpenGL drivers (moreover, it is only useful for old 1.0 apps
that query the glBindTextureEXT extension).
*/
memcpy(buf, ext_ret->name, strlen(ext_ret->name) - 3);
buf[strlen(ext_ret->name) - 3] = '\0';
TRACE("Extension not found in the Linux OpenGL library, checking against libGL bug with %s..\n", buf);
ret = GetProcAddress(opengl32_handle, buf);
if (ret != NULL) {
TRACE("Found function in main OpenGL library (%p)!\n", ret);
} else {
WARN("Did not find function %s (%s) in your OpenGL library!\n", lpszProc, ext_ret->name);
}
return ret;
} else {
TRACE("returning function (%p)\n", ext_ret->func);
extension_funcs[ext_ret - extension_registry] = local_func;
return ext_ret->func;
}
}
}
/***********************************************************************
* wglRealizeLayerPalette (OPENGL32.@)
*/
BOOL WINAPI wglRealizeLayerPalette(HDC hdc,
int iLayerPlane,
BOOL bRealize) {
FIXME("()\n");
return FALSE;
}
/***********************************************************************
* wglSetLayerPaletteEntries (OPENGL32.@)
*/
int WINAPI wglSetLayerPaletteEntries(HDC hdc,
int iLayerPlane,
int iStart,
int cEntries,
const COLORREF *pcr) {
FIXME("(): stub!\n");
return 0;
}
/***********************************************************************
* wglSwapLayerBuffers (OPENGL32.@)
*/
BOOL WINAPI wglSwapLayerBuffers(HDC hdc,
UINT fuPlanes) {
TRACE_(opengl)("(%p, %08x)\n", hdc, fuPlanes);
if (fuPlanes & WGL_SWAP_MAIN_PLANE) {
if (!GdiSwapBuffers(hdc)) return FALSE;
fuPlanes &= ~WGL_SWAP_MAIN_PLANE;
}
if (fuPlanes) {
WARN("Following layers unhandled: %08x\n", fuPlanes);
}
return TRUE;
}
/***********************************************************************
* wglUseFontBitmaps_common
*/
static BOOL wglUseFontBitmaps_common( HDC hdc, DWORD first, DWORD count, DWORD listBase, BOOL unicode )
{
GLYPHMETRICS gm;
unsigned int glyph, size = 0;
void *bitmap = NULL, *gl_bitmap = NULL;
int org_alignment;
BOOL ret = TRUE;
glGetIntegerv(GL_UNPACK_ALIGNMENT, &org_alignment);
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
for (glyph = first; glyph < first + count; glyph++) {
static const MAT2 identity = { {0,1},{0,0},{0,0},{0,1} };
unsigned int needed_size, height, width, width_int;
if (unicode)
needed_size = GetGlyphOutlineW(hdc, glyph, GGO_BITMAP, &gm, 0, NULL, &identity);
else
needed_size = GetGlyphOutlineA(hdc, glyph, GGO_BITMAP, &gm, 0, NULL, &identity);
TRACE("Glyph: %3d / List: %d size %d\n", glyph, listBase, needed_size);
if (needed_size == GDI_ERROR) {
ret = FALSE;
break;
}
if (needed_size > size) {
size = needed_size;
HeapFree(GetProcessHeap(), 0, bitmap);
HeapFree(GetProcessHeap(), 0, gl_bitmap);
bitmap = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
gl_bitmap = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
}
if (unicode)
ret = (GetGlyphOutlineW(hdc, glyph, GGO_BITMAP, &gm, size, bitmap, &identity) != GDI_ERROR);
else
ret = (GetGlyphOutlineA(hdc, glyph, GGO_BITMAP, &gm, size, bitmap, &identity) != GDI_ERROR);
if (!ret) break;
if (TRACE_ON(wgl)) {
unsigned int bitmask;
unsigned char *bitmap_ = bitmap;
TRACE(" - bbox: %d x %d\n", gm.gmBlackBoxX, gm.gmBlackBoxY);
TRACE(" - origin: (%d, %d)\n", gm.gmptGlyphOrigin.x, gm.gmptGlyphOrigin.y);
TRACE(" - increment: %d - %d\n", gm.gmCellIncX, gm.gmCellIncY);
if (needed_size != 0) {
TRACE(" - bitmap:\n");
for (height = 0; height < gm.gmBlackBoxY; height++) {
TRACE(" ");
for (width = 0, bitmask = 0x80; width < gm.gmBlackBoxX; width++, bitmask >>= 1) {
if (bitmask == 0) {
bitmap_ += 1;
bitmask = 0x80;
}
if (*bitmap_ & bitmask)
TRACE("*");
else
TRACE(" ");
}
bitmap_ += (4 - ((UINT_PTR)bitmap_ & 0x03));
TRACE("\n");
}
}
}
/* In OpenGL, the bitmap is drawn from the bottom to the top... So we need to invert the
* glyph for it to be drawn properly.
*/
if (needed_size != 0) {
width_int = (gm.gmBlackBoxX + 31) / 32;
for (height = 0; height < gm.gmBlackBoxY; height++) {
for (width = 0; width < width_int; width++) {
((int *) gl_bitmap)[(gm.gmBlackBoxY - height - 1) * width_int + width] =
((int *) bitmap)[height * width_int + width];
}
}
}
glNewList(listBase++, GL_COMPILE);
if (needed_size != 0) {
glBitmap(gm.gmBlackBoxX, gm.gmBlackBoxY,
0 - gm.gmptGlyphOrigin.x, (int) gm.gmBlackBoxY - gm.gmptGlyphOrigin.y,
gm.gmCellIncX, gm.gmCellIncY,
gl_bitmap);
} else {
/* This is the case of 'empty' glyphs like the space character */
glBitmap(0, 0, 0, 0, gm.gmCellIncX, gm.gmCellIncY, NULL);
}
glEndList();
}
glPixelStorei(GL_UNPACK_ALIGNMENT, org_alignment);
HeapFree(GetProcessHeap(), 0, bitmap);
HeapFree(GetProcessHeap(), 0, gl_bitmap);
return ret;
}
/***********************************************************************
* wglUseFontBitmapsA (OPENGL32.@)
*/
BOOL WINAPI wglUseFontBitmapsA(HDC hdc, DWORD first, DWORD count, DWORD listBase)
{
return wglUseFontBitmaps_common( hdc, first, count, listBase, FALSE );
}
/***********************************************************************
* wglUseFontBitmapsW (OPENGL32.@)
*/
BOOL WINAPI wglUseFontBitmapsW(HDC hdc, DWORD first, DWORD count, DWORD listBase)
{
return wglUseFontBitmaps_common( hdc, first, count, listBase, TRUE );
}
#ifdef SONAME_LIBGLU
static void *load_libglu(void)
{
static int already_loaded;
void *handle;
if (already_loaded) return libglu_handle;
already_loaded = 1;
TRACE("Trying to load GLU library: %s\n", SONAME_LIBGLU);
handle = wine_dlopen(SONAME_LIBGLU, RTLD_NOW, NULL, 0);
if (!handle)
{
WARN("Failed to load %s\n", SONAME_LIBGLU);
return NULL;
}
#define LOAD_FUNCPTR(f) if((p##f = wine_dlsym(handle, #f, NULL, 0)) == NULL) goto sym_not_found;
LOAD_FUNCPTR(gluNewTess)
LOAD_FUNCPTR(gluDeleteTess)
LOAD_FUNCPTR(gluTessBeginContour)
LOAD_FUNCPTR(gluTessBeginPolygon)
LOAD_FUNCPTR(gluTessCallback)
LOAD_FUNCPTR(gluTessEndContour)
LOAD_FUNCPTR(gluTessEndPolygon)
LOAD_FUNCPTR(gluTessVertex)
#undef LOAD_FUNCPTR
libglu_handle = handle;
return handle;
sym_not_found:
WARN("Unable to load function ptrs from libGLU\n");
/* Close the library as we won't use it */
wine_dlclose(handle, NULL, 0);
return NULL;
}
static void fixed_to_double(POINTFX fixed, UINT em_size, GLdouble vertex[3])
{
vertex[0] = (fixed.x.value + (GLdouble)fixed.x.fract / (1 << 16)) / em_size;
vertex[1] = (fixed.y.value + (GLdouble)fixed.y.fract / (1 << 16)) / em_size;
vertex[2] = 0.0;
}
static void tess_callback_vertex(GLvoid *vertex)
{
GLdouble *dbl = vertex;
TRACE("%f, %f, %f\n", dbl[0], dbl[1], dbl[2]);
glVertex3dv(vertex);
}
static void tess_callback_begin(GLenum which)
{
TRACE("%d\n", which);
glBegin(which);
}
static void tess_callback_end(void)
{
TRACE("\n");
glEnd();
}
/***********************************************************************
* wglUseFontOutlines_common
*/
static BOOL wglUseFontOutlines_common(HDC hdc,
DWORD first,
DWORD count,
DWORD listBase,
FLOAT deviation,
FLOAT extrusion,
int format,
LPGLYPHMETRICSFLOAT lpgmf,
BOOL unicode)
{
UINT glyph;
const MAT2 identity = {{0,1},{0,0},{0,0},{0,1}};
GLUtesselator *tess;
LOGFONTW lf;
HFONT old_font, unscaled_font;
UINT em_size = 1024;
RECT rc;
TRACE("(%p, %d, %d, %d, %f, %f, %d, %p, %s)\n", hdc, first, count,
listBase, deviation, extrusion, format, lpgmf, unicode ? "W" : "A");
if (!load_libglu())
{
ERR("libGLU is required for this function but isn't loaded\n");
return FALSE;
}
tess = pgluNewTess();
if(!tess) return FALSE;
pgluTessCallback(tess, GLU_TESS_VERTEX, (_GLUfuncptr)tess_callback_vertex);
pgluTessCallback(tess, GLU_TESS_BEGIN, (_GLUfuncptr)tess_callback_begin);
pgluTessCallback(tess, GLU_TESS_END, tess_callback_end);
GetObjectW(GetCurrentObject(hdc, OBJ_FONT), sizeof(lf), &lf);
rc.left = rc.right = rc.bottom = 0;
rc.top = em_size;
DPtoLP(hdc, (POINT*)&rc, 2);
lf.lfHeight = -abs(rc.top - rc.bottom);
lf.lfOrientation = lf.lfEscapement = 0;
unscaled_font = CreateFontIndirectW(&lf);
old_font = SelectObject(hdc, unscaled_font);
for (glyph = first; glyph < first + count; glyph++)
{
DWORD needed;
GLYPHMETRICS gm;
BYTE *buf;
TTPOLYGONHEADER *pph;
TTPOLYCURVE *ppc;
GLdouble *vertices;
if(unicode)
needed = GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
else
needed = GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
if(needed == GDI_ERROR)
goto error;
buf = HeapAlloc(GetProcessHeap(), 0, needed);
vertices = HeapAlloc(GetProcessHeap(), 0, needed / sizeof(POINTFX) * 3 * sizeof(GLdouble));
if(unicode)
GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
else
GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
TRACE("glyph %d\n", glyph);
if(lpgmf)
{
lpgmf->gmfBlackBoxX = (float)gm.gmBlackBoxX / em_size;
lpgmf->gmfBlackBoxY = (float)gm.gmBlackBoxY / em_size;
lpgmf->gmfptGlyphOrigin.x = (float)gm.gmptGlyphOrigin.x / em_size;
lpgmf->gmfptGlyphOrigin.y = (float)gm.gmptGlyphOrigin.y / em_size;
lpgmf->gmfCellIncX = (float)gm.gmCellIncX / em_size;
lpgmf->gmfCellIncY = (float)gm.gmCellIncY / em_size;
TRACE("%fx%f at %f,%f inc %f,%f\n", lpgmf->gmfBlackBoxX, lpgmf->gmfBlackBoxY,
lpgmf->gmfptGlyphOrigin.x, lpgmf->gmfptGlyphOrigin.y, lpgmf->gmfCellIncX, lpgmf->gmfCellIncY);
lpgmf++;
}
glNewList(listBase++, GL_COMPILE);
pgluTessBeginPolygon(tess, NULL);
pph = (TTPOLYGONHEADER*)buf;
while((BYTE*)pph < buf + needed)
{
TRACE("\tstart %d, %d\n", pph->pfxStart.x.value, pph->pfxStart.y.value);
pgluTessBeginContour(tess);
fixed_to_double(pph->pfxStart, em_size, vertices);
pgluTessVertex(tess, vertices, vertices);
vertices += 3;
ppc = (TTPOLYCURVE*)((char*)pph + sizeof(*pph));
while((char*)ppc < (char*)pph + pph->cb)
{
int i;
switch(ppc->wType) {
case TT_PRIM_LINE:
for(i = 0; i < ppc->cpfx; i++)
{
TRACE("\t\tline to %d, %d\n", ppc->apfx[i].x.value, ppc->apfx[i].y.value);
fixed_to_double(ppc->apfx[i], em_size, vertices);
pgluTessVertex(tess, vertices, vertices);
vertices += 3;
}
break;
case TT_PRIM_QSPLINE:
for(i = 0; i < ppc->cpfx/2; i++)
{
/* FIXME: just connecting the control points for now */
TRACE("\t\tcurve %d,%d %d,%d\n",
ppc->apfx[i * 2].x.value, ppc->apfx[i * 3].y.value,
ppc->apfx[i * 2 + 1].x.value, ppc->apfx[i * 3 + 1].y.value);
fixed_to_double(ppc->apfx[i * 2], em_size, vertices);
pgluTessVertex(tess, vertices, vertices);
vertices += 3;
fixed_to_double(ppc->apfx[i * 2 + 1], em_size, vertices);
pgluTessVertex(tess, vertices, vertices);
vertices += 3;
}
break;
default:
ERR("\t\tcurve type = %d\n", ppc->wType);
pgluTessEndContour(tess);
goto error_in_list;
}
ppc = (TTPOLYCURVE*)((char*)ppc + sizeof(*ppc) +
(ppc->cpfx - 1) * sizeof(POINTFX));
}
pgluTessEndContour(tess);
pph = (TTPOLYGONHEADER*)((char*)pph + pph->cb);
}
error_in_list:
pgluTessEndPolygon(tess);
glTranslated((GLdouble)gm.gmCellIncX / em_size, (GLdouble)gm.gmCellIncY / em_size, 0.0);
glEndList();
HeapFree(GetProcessHeap(), 0, buf);
HeapFree(GetProcessHeap(), 0, vertices);
}
error:
DeleteObject(SelectObject(hdc, old_font));
pgluDeleteTess(tess);
return TRUE;
}
#else /* SONAME_LIBGLU */
static BOOL wglUseFontOutlines_common(HDC hdc,
DWORD first,
DWORD count,
DWORD listBase,
FLOAT deviation,
FLOAT extrusion,
int format,
LPGLYPHMETRICSFLOAT lpgmf,
BOOL unicode)
{
FIXME("Unable to compile in wglUseFontOutlines support without GL/glu.h\n");
return FALSE;
}
#endif /* SONAME_LIBGLU */
/***********************************************************************
* wglUseFontOutlinesA (OPENGL32.@)
*/
BOOL WINAPI wglUseFontOutlinesA(HDC hdc,
DWORD first,
DWORD count,
DWORD listBase,
FLOAT deviation,
FLOAT extrusion,
int format,
LPGLYPHMETRICSFLOAT lpgmf)
{
return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, FALSE);
}
/***********************************************************************
* wglUseFontOutlinesW (OPENGL32.@)
*/
BOOL WINAPI wglUseFontOutlinesW(HDC hdc,
DWORD first,
DWORD count,
DWORD listBase,
FLOAT deviation,
FLOAT extrusion,
int format,
LPGLYPHMETRICSFLOAT lpgmf)
{
return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, TRUE);
}
/***********************************************************************
* glDebugEntry (OPENGL32.@)
*/
GLint WINAPI wine_glDebugEntry( GLint unknown1, GLint unknown2 )
{
return 0;
}
/***********************************************************************
* glFinish (OPENGL32.@)
*/
void WINAPI wine_glFinish( void )
{
TRACE("()\n");
wine_wgl.p_wglFinish();
}
/***********************************************************************
* glFlush (OPENGL32.@)
*/
void WINAPI wine_glFlush( void )
{
TRACE("()\n");
wine_wgl.p_wglFlush();
}
/* build the extension string by filtering out the disabled extensions */
static char *build_gl_extensions( const char *extensions )
{
char *p, *str, *disabled = NULL;
const char *end;
HKEY hkey;
TRACE( "GL_EXTENSIONS:\n" );
if (!extensions) extensions = "";
/* @@ Wine registry key: HKCU\Software\Wine\OpenGL */
if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\OpenGL", &hkey ))
{
DWORD size, ret = RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, NULL, &size );
if (!ret && (disabled = HeapAlloc( GetProcessHeap(), 0, size )))
ret = RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, (BYTE *)disabled, &size );
RegCloseKey( hkey );
if (ret) *disabled = 0;
}
if ((str = HeapAlloc( GetProcessHeap(), 0, strlen(extensions) + 2 )))
{
p = str;
for (;;)
{
while (*extensions == ' ') extensions++;
if (!*extensions) break;
if (!(end = strchr( extensions, ' ' ))) end = extensions + strlen( extensions );
memcpy( p, extensions, end - extensions );
p[end - extensions] = 0;
if (!has_extension( disabled, p ))
{
TRACE("++ %s\n", p );
p += end - extensions;
*p++ = ' ';
}
else TRACE("-- %s (disabled by config)\n", p );
extensions = end;
}
*p = 0;
}
HeapFree( GetProcessHeap(), 0, disabled );
return str;
}
/***********************************************************************
* glGetString (OPENGL32.@)
*/
const GLubyte * WINAPI wine_glGetString( GLenum name )
{
static const GLubyte *gl_extensions;
/* this is for buggy nvidia driver, crashing if called from a different
thread with no context */
if(wglGetCurrentContext() == NULL)
return NULL;
if (name != GL_EXTENSIONS) return glGetString(name);
if (!gl_extensions)
{
const char *orig_ext = (const char *)glGetString(GL_EXTENSIONS);
char *new_ext = build_gl_extensions( orig_ext );
if (InterlockedCompareExchangePointer( (void **)&gl_extensions, new_ext, NULL ))
HeapFree( GetProcessHeap(), 0, new_ext );
}
return gl_extensions;
}
/***********************************************************************
* glGetIntegerv (OPENGL32.@)
*/
void WINAPI wine_glGetIntegerv( GLenum pname, GLint* params )
{
wine_wgl.p_wglGetIntegerv(pname, params);
}
/***********************************************************************
* wglSwapBuffers (OPENGL32.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH wglSwapBuffers( HDC hdc )
{
return GdiSwapBuffers(hdc);
}
/* This is for brain-dead applications that use OpenGL functions before even
creating a rendering context.... */
static BOOL process_attach(void)
{
HDC hdc = GetDC( 0 );
const struct wgl_funcs *funcs = get_dc_funcs( hdc );
ReleaseDC( 0, hdc );
/* internal WGL functions */
wine_wgl.p_wglFinish = (void *)funcs->p_wglGetProcAddress("wglFinish");
wine_wgl.p_wglFlush = (void *)funcs->p_wglGetProcAddress("wglFlush");
wine_wgl.p_wglGetIntegerv = (void *)funcs->p_wglGetProcAddress("wglGetIntegerv");
return TRUE;
}
/**********************************************************************/
static void process_detach(void)
{
if (libglu_handle) wine_dlclose(libglu_handle, NULL, 0);
}
/***********************************************************************
* OpenGL initialisation routine
*/
BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
{
switch(reason)
{
case DLL_PROCESS_ATTACH:
opengl32_handle = hinst;
DisableThreadLibraryCalls(hinst);
return process_attach();
case DLL_PROCESS_DETACH:
process_detach();
break;
}
return TRUE;
}
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