ReceiveTempSMS
/
Sweden-Number
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

opengl: Fix wglMakeCurrent bug.

This commit is contained in:
Roderick Colenbrander 2006-10-07 20:08:26 +02:00 committed by Alexandre Julliard
parent 55e3ecf675
commit b77ac326a6
1 changed files with 29 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
dlls/gdi/opengl.c
View File

@ -37,6 +37,22 @@
WINE_DEFAULT_DEBUG_CHANNEL(wgl);
static HDC default_hdc = 0;
/* We route all wgl functions from opengl32.dll through gdi32.dll to
* the display driver. Various wgl calls have a hDC as one of their parameters.
* Using DC_GetDCPtr we get access to the functions exported by the driver.
* Some functions don't receive a hDC. This function creates a global hdc and
* if there's already a global hdc, it returns it.
*/
static DC* OPENGL_GetDefaultDC()
{
if(!default_hdc)
default_hdc = CreateDCA("DISPLAY", NULL, NULL, NULL);
return DC_GetDCPtr(default_hdc);
}
/***********************************************************************
* wglCreateContext (OPENGL32.@)
*/
@ -62,7 +78,14 @@ HGLRC WINAPI wglCreateContext(HDC hdc)
BOOL WINAPI wglMakeCurrent(HDC hdc, HGLRC hglrc)
{
BOOL ret = FALSE;
DC * dc = DC_GetDCPtr( hdc );
DC * dc = NULL;
/* When the context hglrc is NULL, the HDC is ignored and can be NULL.
* In that case use the global hDC to get access to the driver. */
if(hglrc == NULL)
dc = OPENGL_GetDefaultDC();
else
dc = DC_GetDCPtr( hdc );
TRACE("hdc: (%p), hglrc: (%p)\n", hdc, hglrc);
@ -71,7 +94,11 @@ BOOL WINAPI wglMakeCurrent(HDC hdc, HGLRC hglrc)
if (!dc->funcs->pwglMakeCurrent) FIXME(" :stub\n");
else ret = dc->funcs->pwglMakeCurrent(dc->physDev,hglrc);
GDI_ReleaseObj( hdc);
if(hglrc == NULL)
GDI_ReleaseObj(default_hdc);
else
GDI_ReleaseObj(hdc);
return ret;
}