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23 lines
770 B
Plaintext
23 lines
770 B
Plaintext
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;------------------------------------------------------------------------------
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; FocusBlur by choosing a range of z values and using that to select
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; a blurred version of the original image.
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;
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; Copyright (C) 2001 Microsoft Corporation
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; All rights reserved.
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;------------------------------------------------------------------------------
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xps.1.1
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def c0, 0.5f, 0.5f, 0.5f, 0.5f ; blur value
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; source textures
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tex t0 ; z-buffer texture
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texreg2ar t1, t0 ; lookup-table texture to choose what range of depth to use
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tex t2 ; pre-blurred texture, first offset
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tex t3 ; pre-blurred texture, second offset
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; blur pre-blurred texture even more
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lrp r0, c0, t2, t3
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; modulate by depth range
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xfc r0_sat, 1-t1.a, zero, zero, zero, zero, 1-t1.a
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