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Allows no-vsync when a multisample buffer is requested

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This commit is contained in:
Zhao Huang 2011-12-16 16:31:43 +00:00
parent 5933da3f05
commit 73e89c8254
1 changed files with 30 additions and 20 deletions
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48
panda/src/dxgsg9/wdxGraphicsWindow9.cxx
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@ -743,29 +743,39 @@ create_screen_buffers_and_device(DXScreenData &display, bool force_16bpp_zbuffer
return false;
}
//From d3d8caps.h
//D3DPRESENT_INTERVAL_DEFAULT = 0x00000000L
//#define D3DPRESENT_INTERVAL_ONE 0x00000001L
//Next line is really sloppy, should either be D3DPRESENT_INTERVAL_DEFAULT or D3DPRESENT_INTERVAL_ONE
//not a direct number! but I'm not going to touch it because it's working as is. Zhao 12/15/2011
presentation_params->PresentationInterval = 0;
if (supported_multisamples<2) {
if (do_sync) {
// 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;
}
// override presentation parameters for windowed mode, render and display at maximum speed
if (do_sync == false) {
presentation_params->SwapEffect = D3DSWAPEFFECT_FLIP;
//ATI 5450 doesn't like D3DSWAPEFFECT_FLIP
presentation_params->SwapEffect = D3DSWAPEFFECT_DISCARD;
if (do_sync == false) {
presentation_params->PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
}
} else {
presentation_params->SwapEffect = D3DSWAPEFFECT_DISCARD;
}
// if (supported_multisamples<2) {
// if (do_sync) {
// // 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;
// }
// // override presentation parameters for windowed mode, render and display at maximum speed
// if (do_sync == false) {
// presentation_params->SwapEffect = D3DSWAPEFFECT_FLIP;
// presentation_params->PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
// }
// } else {
// presentation_params->SwapEffect = D3DSWAPEFFECT_DISCARD;
// }
//assert((dwRenderWidth == presentation_params->BackBufferWidth)&&(dwRenderHeight == presentation_params->BackBufferHeight));