nv50/ir: use levelZero for non-frag tex/txp ops
radeonsi also does the same thing. I suspect that this is likely to be a no-op in reality, but it brings nouveau code closer to what the blob produces. Plus it makes sense to not try to do auto-derivatives on this. Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu> Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
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@ -2227,6 +2227,11 @@ Converter::handleTEX(Value *dst[4], int R, int S, int L, int C, int Dx, int Dy)
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if (tgsi.getOpcode() == TGSI_OPCODE_SAMPLE_C_LZ)
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texi->tex.levelZero = true;
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if (prog->getType() != Program::TYPE_FRAGMENT &&
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(tgsi.getOpcode() == TGSI_OPCODE_TEX ||
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tgsi.getOpcode() == TGSI_OPCODE_TEX2 ||
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tgsi.getOpcode() == TGSI_OPCODE_TXP))
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texi->tex.levelZero = true;
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if (tgsi.getOpcode() == TGSI_OPCODE_TG4 && !tgt.isShadow())
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texi->tex.gatherComp = tgsi.getSrc(1).getValueU32(0, info);
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