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23 lines
682 B
Plaintext
23 lines
682 B
Plaintext
ps.1.4
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; premultiplied by .25 so that they fit in [-1,1] and use _x4 to scale back up.
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def c0, 0.29103088375, 0.3989486695, 0.0f, -0.217663765
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def c1, 0.29103088375, -0.20336914075, -0.09786224375, 0.132426262
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def c2, 0.29103088375, 0.0f, 0.5044555665, -0.2704172135
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def c3, 1.0f, 0.0f, 0.0f, 1.0f
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texld r0, t0 ; Y
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texld r1, t1 ; cR
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texld r2, t2 ; cB
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mov r3.x, r0 ; get Y into x
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mov r3.y, r1 ; get cR into y
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+mov r3.w, c3.x ; set w to 1 for the 4th component of the dp4
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mov r3.z, r2 ; get cB into z
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+mov r0.a, c3.a ; set output alpha to one. . .don't really care since we aren't alpha blending.
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dp4_x4_sat r0.r, r3, c0
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dp4_x4_sat r0.g, r3, c1
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dp4_x4_sat r0.b, r3, c2
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