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Cycles: Added Cryptomatte output.

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This allows for extra output passes that encode automatic object and material masks
for the entire scene. It is an implementation of the Cryptomatte standard as
introduced by Psyop. A good future extension would be to add a manifest to the
export and to do plenty of testing to ensure that it is fully compatible with other
renderers and compositing programs that use Cryptomatte.

Internally, it adds the ability for Cycles to have several passes of the same type
that are distinguished by their name.

Differential Revision: https://developer.blender.org/D3538
This commit is contained in:
Stefan Werner
2018-10-28 05:37:41 -04:00
parent c0b3e3daeb
commit e58c6cf0c6
32 changed files with 810 additions and 46 deletions
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4
intern/cycles/render/shader.cpp
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@@ -30,6 +30,7 @@
#include "render/tables.h"
#include "util/util_foreach.h"
#include "util/util_murmurhash.h"
#ifdef WITH_OCIO
# include <OpenColorIO/OpenColorIO.h>
@@ -523,12 +524,15 @@ void ShaderManager::device_update_common(Device *device,
if(shader->is_constant_emission(&constant_emission))
flag |= SD_HAS_CONSTANT_EMISSION;
uint32_t cryptomatte_id = util_murmur_hash3(shader->name.c_str(), shader->name.length(), 0);
/* regular shader */
kshader->flags = flag;
kshader->pass_id = shader->pass_id;
kshader->constant_emission[0] = constant_emission.x;
kshader->constant_emission[1] = constant_emission.y;
kshader->constant_emission[2] = constant_emission.z;
kshader->cryptomatte_id = util_hash_to_float(cryptomatte_id);
kshader++;
has_transparent_shadow |= (flag & SD_HAS_TRANSPARENT_SHADOW) != 0;