- state[I830_TEXREG_TM0S3] |= ((intelObj->lastLevel -
- intelObj->firstLevel) *
- 4) << TM0S3_MIN_MIP_SHIFT;
-
+ /* We get one field with fraction bits for the maximum
+ * addressable (smallest resolution) LOD. Use it to cover both
+ * MAX_LEVEL and MAX_LOD.
+ */
+ minlod_fixed = U_FIXED(CLAMP(sampler->MinLod, 0.0, 11), 4);
+ maxlod = MIN2(sampler->MaxLod, tObj->_MaxLevel - tObj->BaseLevel);
+ if (intel->intelScreen->deviceID == PCI_CHIP_I855_GM ||
+ intel->intelScreen->deviceID == PCI_CHIP_I865_G) {
+ maxlod_fixed = U_FIXED(CLAMP(maxlod, 0.0, 11.75), 2);
+ maxlod_fixed = MAX2(maxlod_fixed, (minlod_fixed + 3) >> 2);
+ state[I830_TEXREG_TM0S3] |= maxlod_fixed << TM0S3_MIN_MIP_SHIFT;
+ state[I830_TEXREG_TM0S2] |= TM0S2_LOD_PRECLAMP;
+ } else {
+ maxlod_fixed = U_FIXED(CLAMP(maxlod, 0.0, 11), 0);
+ maxlod_fixed = MAX2(maxlod_fixed, (minlod_fixed + 15) >> 4);
+ state[I830_TEXREG_TM0S3] |= maxlod_fixed << TM0S3_MIN_MIP_SHIFT_830;
+ }
+ state[I830_TEXREG_TM0S3] |= minlod_fixed << TM0S3_MAX_MIP_SHIFT;