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disable sync in dx8 windowed mode

This commit is contained in:
David Rose 2005-11-29 19:32:08 +00:00
parent 56a7c5b2fd
commit b3fe8def76
1 changed files with 16 additions and 6 deletions
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22
panda/src/dxgsg8/wdxGraphicsWindow8.cxx
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@ -592,6 +592,8 @@ create_screen_buffers_and_device(DXScreenData &display, bool force_16bpp_zbuffer
}
if (is_fullscreen()) {
// CREATE FULLSCREEN BUFFERS
presentation_params->SwapEffect = D3DSWAPEFFECT_DISCARD; // we dont care about preserving contents of old frame
presentation_params->FullScreen_PresentationInterval = (do_sync ? D3DPRESENT_INTERVAL_ONE : D3DPRESENT_INTERVAL_IMMEDIATE);
presentation_params->FullScreen_RefreshRateInHz = display._display_mode.RefreshRate;
@ -611,20 +613,22 @@ create_screen_buffers_and_device(DXScreenData &display, bool force_16bpp_zbuffer
}
SetRect(&view_rect, 0, 0, dwRenderWidth, dwRenderHeight);
} // end create full screen buffers
else { // CREATE WINDOWED BUFFERS
} else {
// CREATE WINDOWED BUFFERS
D3DDISPLAYMODE dispmode;
hr = display._d3d8->GetAdapterDisplayMode(display._card_id, &dispmode);
if (FAILED(hr)) {
wdxdisplay8_cat.fatal() << "GetAdapterDisplayMode failed" << D3DERRORSTRING(hr);
wdxdisplay8_cat.fatal()
<< "GetAdapterDisplayMode failed" << D3DERRORSTRING(hr);
return false;
}
if (dispmode.Format == D3DFMT_P8) {
wdxdisplay8_cat.fatal() << "Can't run windowed in an 8-bit or less display mode" << endl;
wdxdisplay8_cat.fatal()
<< "Can't run windowed in an 8-bit or less display mode" << endl;
return false;
}
@ -632,9 +636,15 @@ create_screen_buffers_and_device(DXScreenData &display, bool force_16bpp_zbuffer
if (dx_multisample_antialiasing_level<2) {
if (do_sync) {
presentation_params->SwapEffect = D3DSWAPEFFECT_COPY_VSYNC;
// It turns out that COPY_VSYNC has real performance problems
// on many nVidia cards--it syncs at some random interval,
// possibly skipping over several video syncs. Screw it,
// we'll effectively disable sync-video with windowed mode
// using DirectX8.
//presentation_params->SwapEffect = D3DSWAPEFFECT_COPY_VSYNC;
presentation_params->SwapEffect = D3DSWAPEFFECT_DISCARD;
} else {
presentation_params->SwapEffect = D3DSWAPEFFECT_DISCARD; //D3DSWAPEFFECT_COPY; does this make any difference?
presentation_params->SwapEffect = D3DSWAPEFFECT_DISCARD;
}
} else {
presentation_params->SwapEffect = D3DSWAPEFFECT_DISCARD;