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forgot to set lowmem flag for windowed case

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cxgeorge 2002-01-01 00:04:56 +00:00
parent 9fac91aa0e
commit 9ccd823fd7
1 changed files with 35 additions and 34 deletions
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61
panda/src/wdxdisplay/wdxGraphicsWindow.cxx
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@ -1422,6 +1422,15 @@ dx_setup() {
// so this is the true value // so this is the true value
_MaxAvailVidMem = dwVidMemTotal; _MaxAvailVidMem = dwVidMemTotal;
#define LOWVIDMEMTHRESHOLD 3500000
// assume buggy drivers (this means you, FireGL2) may return zero for dwTotal, so ignore value if its 0
if((dwVidMemFree>0)&&(dwVidMemFree< LOWVIDMEMTHRESHOLD)) {
// hack: figuring out exactly what res to use is tricky, instead I will
// just use 640x480 if we have < 3 meg avail
_bIsLowVidMemCard = true;
wdxdisplay_cat.debug() << " " << dwVidMemFree << " Available VidMem is under " << LOWVIDMEMTHRESHOLD <<", using 640x480 16bpp rendertargets to save tex vidmem.\n";
}
if(dx_full_screen) { if(dx_full_screen) {
dwRenderWidth = _props._xsize; dwRenderWidth = _props._xsize;
dwRenderHeight = _props._ysize; dwRenderHeight = _props._ysize;
@ -1470,45 +1479,37 @@ dx_setup() {
exit(1); exit(1);
} }
if(dwVidMemFree>0) { // assume buggy drivers (this means you, FireGL2) may return zero for dwTotal, so ignore value if its 0 if(_bIsLowVidMemCard) {
// hack: figuring out exactly what res to use is tricky, instead I will
// just use 640x480 if we have < 3 meg avail
#define LOWVIDMEMTHRESHOLD 3500000
if(dwVidMemFree< LOWVIDMEMTHRESHOLD) {
// we're going to need 800x600 or 640x480 at 16 bit to save enough tex vidmem // we're going to need 800x600 or 640x480 at 16 bit to save enough tex vidmem
dwFullScreenBitDepth=16; // do 16bpp dwFullScreenBitDepth=16; // do 16bpp
dwRenderWidth=640; dwRenderWidth=640;
dwRenderHeight=480; dwRenderHeight=480;
_bIsLowVidMemCard = true; // force 16bpp textures too?
wdxdisplay_cat.debug() << " " << dwVidMemFree << " Available VidMem is under " << LOWVIDMEMTHRESHOLD <<", using 640x480 16bpp rendertargets to save tex vidmem.\n";
}
#if 0 #if 0
// cant do this without more accurate way to estimate mem used before actually switching // cant do this without more accurate way to estimate mem used before actually switching
// to that fullscrn mode. simply computing memsize based on GetDisplayMode doesnt seem // to that fullscrn mode. simply computing memsize based on GetDisplayMode doesnt seem
// to be accurate within more than 1 meg // to be accurate within more than 1 meg
// we think we need to reserve at least 2 megs of vidmem for textures. // we think we need to reserve at least 2 megs of vidmem for textures.
// to do this, reduce buffer bitdepth if possible // to do this, reduce buffer bitdepth if possible
#define RESERVEDTEXVIDMEM 2000000 #define RESERVEDTEXVIDMEM 2000000
int rendertargetmem=dwRenderWidth*dwRenderHeight*(dwFullScreenBitDepth>>3); int rendertargetmem=dwRenderWidth*dwRenderHeight*(dwFullScreenBitDepth>>3);
int memleft = dwFree-rendertargetmem*2; //*2 to handle backbuf/zbuf int memleft = dwFree-rendertargetmem*2; //*2 to handle backbuf/zbuf
if(memleft < RESERVEDTEXVIDMEM) { if(memleft < RESERVEDTEXVIDMEM) {
dwFullScreenBitDepth=16; dwFullScreenBitDepth=16;
wdxdisplay_cat.debug() << "using 16bpp rendertargets to save tex vidmem\n"; wdxdisplay_cat.debug() << "using 16bpp rendertargets to save tex vidmem\n";
assert((DMI.supportedBitDepths & DDBD_16) && (pD3DDevDesc->dwDeviceRenderBitDepth & DDBD_16)); // probably a safe assumption assert((DMI.supportedBitDepths & DDBD_16) && (pD3DDevDesc->dwDeviceRenderBitDepth & DDBD_16)); // probably a safe assumption
rendertargetmem=dwRenderWidth*dwRenderHeight*(dwFullScreenBitDepth>>3); rendertargetmem=dwRenderWidth*dwRenderHeight*(dwFullScreenBitDepth>>3);
memleft = dwFree-rendertargetmem*2; memleft = dwFree-rendertargetmem*2;
// BUGBUG: if we still cant reserve 2 megs of vidmem, need to auto-reduce the scrn res // BUGBUG: if we still cant reserve 2 megs of vidmem, need to auto-reduce the scrn res
if(memleft < RESERVEDTEXVIDMEM) if(memleft < RESERVEDTEXVIDMEM)
wdxdisplay_cat.debug() << " XXXXXX WARNING: cant reserve 2MB of tex vidmem. only " << memleft << " bytes available. Need to rewrite wdxdisplay to try lower resolutions XXXXXXXXXXXXXXXXXXXX\n"; wdxdisplay_cat.debug() << " XXXXXX WARNING: cant reserve 2MB of tex vidmem. only " << memleft << " bytes available. Need to rewrite wdxdisplay to try lower resolutions XXXXXXXXXXXXXXXXXXXX\n";
} }
#endif #endif
} }
DWORD SCL_FPUFlag; DWORD SCL_FPUFlag;