diff options
author | Brecht Van Lommel <brechtvanlommel@pandora.be> | 2013-06-07 16:45:26 +0400 |
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committer | Brecht Van Lommel <brechtvanlommel@pandora.be> | 2013-06-07 16:45:26 +0400 |
commit | a604fb730dd62a2730a3a753adc057abb93296cb (patch) | |
tree | ba8733ea17c330407455404abbbc64717cc78f63 /intern/cycles/kernel/kernel_passes.h | |
parent | ddee696bc76481846673f613344d85310ecf0524 (diff) |
Cycles: mist pass added, with start/depth/falloff control. If the pass is
enabled in a render layer a Mist Pass panel will be shown in the world
properties.
Diffstat (limited to 'intern/cycles/kernel/kernel_passes.h')
-rw-r--r-- | intern/cycles/kernel/kernel_passes.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/intern/cycles/kernel/kernel_passes.h b/intern/cycles/kernel/kernel_passes.h index 57dbdc2ffc1..c7d216e4638 100644 --- a/intern/cycles/kernel/kernel_passes.h +++ b/intern/cycles/kernel/kernel_passes.h @@ -86,6 +86,31 @@ __device_inline void kernel_write_data_passes(KernelGlobals *kg, __global float L->color_glossy += shader_bsdf_glossy(kg, sd)*throughput; if(flag & (PASS_TRANSMISSION_INDIRECT|PASS_TRANSMISSION_COLOR|PASS_TRANSMISSION_DIRECT)) L->color_transmission += shader_bsdf_transmission(kg, sd)*throughput; + + if(flag & PASS_MIST) { + /* bring depth into 0..1 range */ + float mist_start = kernel_data.film.mist_start; + float mist_inv_depth = kernel_data.film.mist_inv_depth; + + float depth = camera_distance(kg, sd->P); + float mist = clamp((depth - mist_start)*mist_inv_depth, 0.0f, 1.0f); + + /* falloff */ + float mist_falloff = kernel_data.film.mist_falloff; + + if(mist_falloff == 1.0f) + ; + else if(mist_falloff == 2.0f) + mist = mist*mist; + else if(mist_falloff == 0.5f) + mist = sqrtf(mist); + else + mist = powf(mist, mist_falloff); + + /* modulate by transparency */ + float3 alpha = throughput*(make_float3(1.0f, 1.0f, 1.0f) - shader_bsdf_transparency(kg, sd)); + L->mist += (1.0f - mist)*average(alpha); + } #endif } @@ -128,6 +153,8 @@ __device_inline void kernel_write_light_passes(KernelGlobals *kg, __global float shadow.w = kernel_data.film.pass_shadow_scale; kernel_write_pass_float4(buffer + kernel_data.film.pass_shadow, sample, shadow); } + if(flag & PASS_MIST) + kernel_write_pass_float(buffer + kernel_data.film.pass_mist, sample, L->mist); #endif } |