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voodoo.cpp: Only flag texture controls as changed if they are actually changed.

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This commit is contained in:
Ted Green 2020-07-02 12:24:19 -06:00
parent 729b27d7c1
commit fd268c1202
1 changed files with 11 additions and 6 deletions
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17
src/devices/video/voodoo.cpp
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@ -1086,7 +1086,7 @@ void voodoo_device::tmu_state::init(uint8_t vdt, tmu_shared_state &share, voodoo
ram = reinterpret_cast<uint8_t *>(memory);
mask = tmem - 1;
reg = r;
regdirty = true;
regdirty = false;
bilinear_mask = (vdt >= TYPE_VOODOO_2) ? 0xff : 0xf0;
/* mark the NCC tables dirty and configure their registers */
@ -3395,16 +3395,21 @@ int32_t voodoo_device::register_w(voodoo_device *vd, offs_t offset, uint32_t dat
case texBaseAddr_1:
case texBaseAddr_2:
case texBaseAddr_3_8:
poly_wait(vd->poly, vd->regnames[regnum]);
if (chips & 2)
{
vd->tmu[0].reg[regnum].u = data;
vd->tmu[0].regdirty = true;
if (vd->tmu[0].reg[regnum].u != data) {
poly_wait(vd->poly, vd->regnames[regnum]);
vd->tmu[0].regdirty = true;
vd->tmu[0].reg[regnum].u = data;
}
}
if (chips & 4)
{
vd->tmu[1].reg[regnum].u = data;
vd->tmu[1].regdirty = true;
if (vd->tmu[1].reg[regnum].u != data) {
poly_wait(vd->poly, vd->regnames[regnum]);
vd->tmu[1].regdirty = true;
vd->tmu[1].reg[regnum].u = data;
}
}
break;