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This commit is contained in:
cxgeorge 2002-10-09 00:07:03 +00:00
parent 273697401b
commit 4efff2aded
1 changed files with 23 additions and 22 deletions
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45
panda/src/wdxdisplay/wdxGraphicsWindow.cxx
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@ -1601,28 +1601,29 @@ verify_window_sizes(unsigned int numsizes,unsigned int *dimen) {
bool bIsGoodMode=false;
if(special_check_fullscreen_resolution(xsize,ysize)) {
// bypass the test below for certain cards we know have valid modes
bIsGoodMode=true;
} else {
if(_dxgsg->scrn.bIsLowVidMemCard)
bIsGoodMode=(((float)xsize*(float)ysize)<=(float)(640*480));
else if(DMI.supportedBitDepths & (DDBD_16 | DDBD_24 | DDBD_32)) {
// assume user is testing fullscreen, not windowed, so use the dwTotal value
// see if 3 scrnbufs (front/back/z)at 16bpp at xsize*ysize will fit with a few
// extra megs for texmem
// 8MB Rage Pro says it has 6.8 megs Total free and will run at 1024x768, so
// formula makes it so that is OK
#define REQD_TEXMEM 1800000.0f
if(_dxgsg->scrn.MaxAvailVidMem==0) {
//assume buggy drivers return bad val of 0 and everything will be OK
bIsGoodMode=true;
} else {
bIsGoodMode = ((((float)xsize*(float)ysize)*6+REQD_TEXMEM) < (float)_dxgsg->scrn.MaxAvailVidMem);
}
if(DMI.supportedBitDepths & (DDBD_16 | DDBD_24 | DDBD_32)) {
if(special_check_fullscreen_resolution(xsize,ysize)) {
// bypass the test below for certain cards we know have valid modes
bIsGoodMode=true;
} else {
if(_dxgsg->scrn.bIsLowVidMemCard)
bIsGoodMode=(((float)xsize*(float)ysize)<=(float)(640*480));
else {
// assume user is testing fullscreen, not windowed, so use the dwTotal value
// see if 3 scrnbufs (front/back/z)at 16bpp at xsize*ysize will fit with a few
// extra megs for texmem
// 8MB Rage Pro says it has 6.8 megs Total free and will run at 1024x768, so
// formula makes it so that is OK
#define REQD_TEXMEM 1800000.0f
if(_dxgsg->scrn.MaxAvailVidMem==0) {
//assume buggy drivers return bad val of 0 and everything will be OK
bIsGoodMode=true;
} else {
bIsGoodMode = ((((float)xsize*(float)ysize)*6+REQD_TEXMEM) < (float)_dxgsg->scrn.MaxAvailVidMem);
}
}
}