| … | |
… | |
| 92 | |
92 | |
| 93 | temp_1f lz; |
93 | temp_1f lz; |
| 94 | |
94 | |
| 95 | // TODO: negative z is not calculated in an acceptable way |
95 | // TODO: negative z is not calculated in an acceptable way |
| 96 | lz = z (vout.position); |
96 | lz = z (vout.position); |
| 97 | z (vout.position) = (log2 (lz) * (2 / log2 (1e10)) - 1) * w (vout.position); |
97 | z (vout.position) = (ifelse (lz < 0, lz, log (lz) * (2 / log (1e10))) - 1) * w (vout.position); |
| 98 | #if 0 |
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| 99 | z (vout.position) = |
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| 100 | ifelse ( |
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| 101 | z < 0, |
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| 102 | -1, |
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| 103 | log2 (lz) * (2 / log2 (1e10)) - 1 |
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| 104 | ) * w (vout.position); |
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| 105 | #endif |
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| 106 | } |
98 | } |
| 107 | |
99 | |
| 108 | vsh_src = shader::shader_builder::stop (); |
100 | vsh_src = shader::shader_builder::stop (); |
| 109 | |
101 | |
| 110 | shader::shader_builder::start (); |
102 | shader::shader_builder::start (); |
