| … | |
… | |
| 89 | { |
89 | { |
| 90 | using namespace shader::compile; |
90 | using namespace shader::compile; |
| 91 | |
91 | |
| 92 | temp_1f lz; |
92 | temp_1f lz; |
| 93 | |
93 | |
| 94 | // TODO: negative z is not calculated in an acceptable way, clipping does horrible things(?) |
94 | // TODO: negative z is not calculated in an a very acceptable way |
| 95 | lz = z (vout.position); |
95 | lz = z (vout.position); |
| 96 | #if 0 |
96 | lz = sign (lz) * (log (abs (lz) + exp (1e0)) - 1e0) / log (1e30); |
| 97 | lz = (log (max (lz, 0) + 1) / log (1e30)) - 1; |
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| 98 | #else |
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| 99 | lz = ifelse (lz <= 0, |
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| 100 | 0, |
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| 101 | log (lz + 1) / log (1e30) |
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| 102 | ) - 1; |
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| 103 | #endif |
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| 104 | z (vout.position) = lz * w (vout.position); |
97 | z (vout.position) = lz * w (vout.position); |
| 105 | } |
98 | } |
| 106 | |
99 | |
| 107 | vsh_src = shader::shader_builder::stop (); |
100 | vsh_src = shader::shader_builder::stop (); |
| 108 | |
101 | |
