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winex11: Get the current pixel format from the drawable structure in wglGetPixelFormat.

This commit is contained in:
Alexandre Julliard 2012-09-07 15:31:05 +02:00
parent 4df8f15ff9
commit bf5e1b6a05
1 changed files with 13 additions and 17 deletions
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30
dlls/winex11.drv/opengl.c
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@ -1509,26 +1509,22 @@ static int glxdrv_wglDescribePixelFormat( HDC hdc, int iPixelFormat,
*/
static int glxdrv_wglGetPixelFormat( HDC hdc )
{
struct x11drv_escape_get_drawable escape;
HWND hwnd = WindowFromDC( hdc );
struct gl_drawable *gl;
int ret = 0;
TRACE( "(%p)\n", hdc );
EnterCriticalSection( &context_section );
if (!XFindContext( gdi_display, (XID)hwnd, gl_hwnd_context, (char **)&gl ) ||
!XFindContext( gdi_display, (XID)hdc, gl_pbuffer_context, (char **)&gl ))
ret = gl->pixel_format;
LeaveCriticalSection( &context_section );
escape.code = X11DRV_GET_DRAWABLE;
if (!ExtEscape( hdc, X11DRV_ESCAPE, sizeof(escape.code), (LPCSTR)&escape.code,
sizeof(escape), (LPSTR)&escape ))
return 0;
/* Offscreen formats can't be used with traditional WGL calls.
* As has been verified on Windows GetPixelFormat doesn't fail but returns iPixelFormat=1. */
if (ret && !is_onscreen_pixel_format( ret )) ret = 1;
if (!is_valid_pixel_format( escape.pixel_format )) return 0; /* not set yet */
if (!is_onscreen_pixel_format( escape.pixel_format ))
{
/* Offscreen formats can't be used with traditional WGL calls.
* As has been verified on Windows GetPixelFormat doesn't fail but returns iPixelFormat=1. */
TRACE("Returning iPixelFormat=1 for offscreen format: %d\n", escape.pixel_format);
return 1;
}
TRACE("(%p): returns %d\n", hdc, escape.pixel_format);
return escape.pixel_format;
TRACE( "%p -> %d\n", hdc, ret );
return ret;
}
/***********************************************************************