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wined3d: Let GetRasterStatus return D3D_OK, again.

This commit is contained in:
Akihiro Sagawa 2012-01-18 23:33:53 +09:00 committed by Alexandre Julliard
parent b18ff8b3b0
commit bd97589dba
1 changed files with 32 additions and 5 deletions
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37
dlls/wined3d/swapchain.c
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@ -206,19 +206,46 @@ HRESULT CDECL wined3d_swapchain_get_raster_status(const struct wined3d_swapchain
struct wined3d_raster_status *raster_status)
{
static BOOL warned;
LARGE_INTEGER counter, freq_per_sec;
LONGLONG freq_per_frame, freq_per_line;
struct wined3d_display_mode mode;
/* No OpenGL equivalent */
if (!warned)
{
FIXME("swapchain %p, raster_status %p stub!\n", swapchain, raster_status);
FIXME("swapchain %p, raster_status %p semi-stub!\n", swapchain, raster_status);
warned = TRUE;
}
/* Obtaining the raster status is a widely implemented but optional
* feature. When this method returns OK StarCraft 2 expects the
* raster_status->InVBlank value to actually change over time. To prevent
* StarCraft 2 from running in an infinite loop at startup this method
* returns INVALIDCALL. */
return WINED3DERR_INVALIDCALL;
* raster_status->InVBlank value to actually change over time.
* And Endless Alice Crysis doesn't care even if this method fails.
* Thus this method returns OK and fakes raster_status by
* QueryPerformanceCounter. */
if (!QueryPerformanceCounter(&counter) || !QueryPerformanceFrequency(&freq_per_sec))
return WINED3DERR_INVALIDCALL;
if (FAILED(wined3d_swapchain_get_display_mode(swapchain, &mode)))
return WINED3DERR_INVALIDCALL;
if (mode.refresh_rate == DEFAULT_REFRESH_RATE)
mode.refresh_rate = 60;
freq_per_frame = freq_per_sec.QuadPart / mode.refresh_rate;
/* Assume 20 scan lines in the vertical blank */
freq_per_line = freq_per_frame / (mode.height + 20);
raster_status->scan_line = (counter.QuadPart % freq_per_frame) / freq_per_line;
if (raster_status->scan_line < mode.height)
raster_status->in_vblank = FALSE;
else
{
raster_status->scan_line = 0;
raster_status->in_vblank = TRUE;
}
TRACE("Returning fake value, in_vblank %u, scan_line %u.\n",
raster_status->in_vblank, raster_status->scan_line);
return WINED3D_OK;
}
HRESULT CDECL wined3d_swapchain_get_display_mode(const struct wined3d_swapchain *swapchain,