30 lines
1.4 KiB
Text
30 lines
1.4 KiB
Text
/* GRF allocation:
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g1~g30: constant buffer
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g1~g2:intra IQ matrix
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g3~g4:non intra IQ matrix
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g5~g20:IDCT table
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g31: thread payload
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g32: message descriptor for reading reference data
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g58~g81:reference data
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g82: thread payload backup
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g83~g106:IDCT data */
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mov (8) g82.0<1>UD g31.0<8,8,1>UD {align1};
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mov (1) g126.8<1>UD ip {align1};
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add (1) ip g21.0<1,1,1>UD 0x50UD {align1}; //jump to the lib to do IDCT
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//Y, (x', y') = (x, y) + (motion_vector.x >> 1, motion_vector.y >> 1)
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asr (2) g31.14<1>W g82.14<2,2,1>W 1W {align1};
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add (2) g32.0<1>UD g31.0<2,2,1>UD g31.14<2,2,1>W {align1};
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mov (1) g32.16<1>UW 0UW {align1}; //0:forward 1:backward
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mov (1) a0.0<1>UD 0x0A4EUD {align1}; //g82.14,motion vector
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mov (1) g126.8<1>UD ip {align1};
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add (1) ip g21.0<1,1,1>UD 0x00UD {align1}; //jump to the lib to read reference data
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//UV, (x', y') = (x >> 1, y >> 1) + (motion_vector.x >> 2, motion_vector.y >> 2)
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shr (2) g31.0<1>UD g31.0<2,2,1>UD 1UD {align1};
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asr (2) g31.14<1>W g82.14<2,2,1>W 2W {align1};
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add (2) g32.0<1>UD g31.0<2,2,1>UD g31.14<2,2,1>W {align1};
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mov (1) g126.8<1>UD ip {align1};
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add (1) ip g21.0<1,1,1>UD 0x10UD {align1}; //jump to the lib to read reference data
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add (1) ip g21.0<1,1,1>UD 0x40UD {align1}; //jump to the lib to add the reference and idct data
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