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winemac: Force swap interval to 0 for single-buffered contexts to avoid vsync'ed flushes.

This commit is contained in:
Ken Thomases 2013-07-02 01:25:00 -05:00 committed by Alexandre Julliard
parent d30705bdfe
commit 967a49fcb2
1 changed files with 11 additions and 3 deletions
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14
dlls/winemac.drv/opengl.c
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@ -2901,7 +2901,9 @@ static BOOL macdrv_wglSwapIntervalEXT(int interval)
return FALSE;
}
if (interval > 1)
if (!pixel_formats[context->format - 1].double_buffer)
interval = 0;
else if (interval > 1)
interval = 1;
value = interval;
@ -3238,8 +3240,14 @@ static BOOL create_context(struct wgl_context *context, CGLContextObj share)
}
/* According to the WGL_EXT_swap_control docs, the default swap interval for
a context is 1. CGL contexts default to 0, so we need to set it. */
swap_interval = 1;
a context is 1. CGL contexts default to 0, so we need to set it. This
only make sense for double-buffered contexts, though. In theory, for
single-buffered contexts, there's no such thing as a swap. But OS X
will synchronize flushes of single-buffered contexts if this is set. */
if (pf->double_buffer)
swap_interval = 1;
else
swap_interval = 0;
err = CGLSetParameter(context->cglcontext, kCGLCPSwapInterval, (GLint*)&swap_interval);
if (err != kCGLNoError)
WARN("CGLSetParameter(kCGLCPSwapInterval) failed with error %d %s; leaving un-vsynced\n", err, CGLErrorString(err));