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dxgsg9: fix startup freeze when VRAM is 4GiB or higher

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This commit is contained in:
rdb 2018-11-01 22:03:10 +01:00
parent be464b61b3
commit f4a8e923f7
1 changed files with 6 additions and 4 deletions
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10
panda/src/dxgsg9/wdxGraphicsPipe9.cxx
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@ -341,11 +341,13 @@ find_all_card_memavails() {
if (!ISPOW2(dwVidMemTotal)) {
// assume they wont return a proper max value, so round up to next pow
// of 2
UINT count = 0;
while ((dwVidMemTotal >> count) != 0x0) {
count++;
int count = get_next_higher_bit((uint32_t)(dwVidMemTotal - 1u));
if (count >= 32u) {
// Maximum value that fits in a UINT.
dwVidMemTotal = 0xffffffffu;
} else {
dwVidMemTotal = (1u << count);
}
dwVidMemTotal = (1 << count);
}
}